[go: up one dir, main page]

WO2025230394A1 - System and method for suppressing generation of and removing impurities in helium refrigerator - Google Patents

System and method for suppressing generation of and removing impurities in helium refrigerator

Info

Publication number
WO2025230394A1
WO2025230394A1 PCT/KR2025/099731 KR2025099731W WO2025230394A1 WO 2025230394 A1 WO2025230394 A1 WO 2025230394A1 KR 2025099731 W KR2025099731 W KR 2025099731W WO 2025230394 A1 WO2025230394 A1 WO 2025230394A1
Authority
WO
WIPO (PCT)
Prior art keywords
helium
temperature
heat exchanger
compressor
compressed oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/KR2025/099731
Other languages
French (fr)
Korean (ko)
Inventor
이인훈
송규민
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea Hydro and Nuclear Power Co Ltd
Original Assignee
Korea Hydro and Nuclear Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Korea Hydro and Nuclear Power Co Ltd filed Critical Korea Hydro and Nuclear Power Co Ltd
Publication of WO2025230394A1 publication Critical patent/WO2025230394A1/en
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F25B9/002—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B11/00—Compression machines, plants or systems, using turbines, e.g. gas turbines
    • F25B11/02—Compression machines, plants or systems, using turbines, e.g. gas turbines as expanders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/003—Filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/05—Compression system with heat exchange between particular parts of the system
    • F25B2400/054—Compression system with heat exchange between particular parts of the system between the suction tube of the compressor and another part of the cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F9/00—Treating radioactively contaminated material; Decontamination arrangements therefor
    • G21F9/04—Treating liquids
    • G21F9/06—Processing

Definitions

  • the present invention relates to a system and method for suppressing and removing impurities generated in a helium refrigerator, and more particularly, to a system and method for suppressing and removing impurities generated in a helium refrigerator used in an ultra-low temperature distillation process of a tritium (T2) enrichment step of a tritium removal facility, which does not require stopping operation for performing helium purification operation.
  • T2 tritium
  • Tritium an synonymous element of hydrogen, is a radioactive nuclide with a half-life of approximately 12.3 years. It is artificially generated mostly during the operation of nuclear power plants. In particular, in some pressurized heavy water reactors (PWRs) where the generation rate is high, tritium is extracted from heavy water used as a moderator and coolant for the purpose of reducing radiation exposure by a Tritium Removal Facility (TRF).
  • TRF Tritium Removal Facility
  • tritium exists in the form of tritiated water (DTO), which is a form in which one deuterium atom (D) of heavy water (D2O) is substituted, and its concentration is at the level of 10 Ci/kg in the moderator system.
  • DTO tritiated water
  • tritium existing in the form of tritium water is introduced from the power plant system to the catalyst exchange process (1) through the liquid side input pipe (4) of the catalyst exchange process (1), and is then replaced with DT gas by the catalyst exchange reaction below and removed from the introduced heavy water.
  • Heavy water (D2O) from which tritium has been removed is returned to the power plant system through the liquid side discharge pipe (5) of the catalyst exchange process (1).
  • Tritium replaced with DT (gas) is transferred to the ultra-low temperature distillation process (2) through the gas-side exhaust pipe (6) of the catalytic exchange process (1), and is finally separated and extracted into deuterium gas (D2) and tritium (T2) due to the difference in boiling points.
  • the deuterium gas discharged as a gas in the ultra-low temperature distillation process (2) is supplied as an input gas to the catalyst exchange process (1) through the gas upper side input pipe (7) of the catalyst exchange process (1).
  • Tritium (T2) is supplied through a concentration supply pipe (8) to the ultra-low temperature distillation process (3), and a helium refrigerator is used in the ultra-low temperature distillation process (3).
  • the helium compressor which is the main device of the helium refrigerator, has a problem in that the temperature at the rear of the helium compressor changes significantly depending on the change in the cooling water temperature because the temperature is controlled only by the temperature of the compressed oil storage tank after the initial setting.
  • the heat generated in the helium compressor carbonizes the compressed oil, creating impurities such as hydrocarbons. Some of the impurities pass through the Oil Removal System (ORS) and are condensed in the heat exchanger.
  • ORS Oil Removal System
  • compressed oil lubricating oil
  • compressed oil has the property of decomposing into carbon dioxide and other oxygen when the temperature rises or when it comes into contact with oxygen, so contact with oxygen must be blocked, but there is no measure to prevent oxygen from flowing into the compressed oil storage tank.
  • the present invention has been devised to solve such problems, and the purpose of the present invention is to provide a helium refrigerator impurity generation suppression and removal system and method, which can maintain the performance of a heat exchanger by suppressing the generation of impurities other than hydrogen adsorbed in the heat exchanger and removing the generated impurities, and can reduce the contact of oxygen introduced during compression oil replenishment or exchange with the compression oil.
  • the system for suppressing and removing impurities in a helium refrigerator of the present invention comprises a helium gas supply line for supplying helium to a helium compressor, a compression oil circulation line for circulating and supplying compression oil required for compressing helium in the helium compressor, a helium circulation line for circulating the helium supplied through the helium gas supply line together with the compression oil supplied through the compression oil circulation line for compressing and recovering the helium in the helium compressor and using it, and a cooling water circulation line of a compression oil storage device for preventing the compression oil from becoming high in temperature due to heat generated when helium and compression oil are compressed together in the helium compressor, and a first controller for controlling the opening and closing amount of a first control valve installed in front of the compression oil storage device of the compression oil circulation line by controlling the flow rate of compression oil supplied to the helium compressor at the rear end of the helium compressor, signal-connected to a first temperature detection sensor for measuring the temperature at the rear end of the heli
  • the first control valve which is a compression oil flow control valve, is controlled by the first controller to increase the compression oil flow rate, thereby suppressing the rise in the temperature at the rear end of the helium compressor.
  • the second controller sends a signal to the second control valve, which is a cooling water flow control valve, to increase the cooling water flow rate according to the rate of increase of the temperature at the rear end of the helium compressor and the temperature inside the compressed oil storage device, thereby controlling the temperature of the compressed oil storage tank of the compressed oil storage device.
  • the second control valve which is a cooling water flow control valve
  • first adsorber and the second adsorber are connected in series to remove gases such as hydrocarbons, nitrogen, oxygen, and hydrogen that are generated or introduced from the outside and cannot be controlled by temperature.
  • the first adsorber removes gases such as hydrogen that are adsorbed at ultra-low temperatures
  • the second adsorber can remove gases with relatively high adsorption temperatures such as hydrocarbons and nitrogen.
  • Impurities can be monitored by the efficiency of the first heat exchanger, and since gas analysis is not required, the efficiency can be monitored quickly and the adsorption flow rate of the first adsorber can be formed to maintain the heat exchange efficiency.
  • the compressed oil storage device may further include a nitrogen injection device that injects nitrogen into the compressed oil storage tank to prevent oxidation of the compressed oil in order to reduce contact between oxygen introduced into the compressed oil storage tank when replenishing or replacing the compressed oil and the compressed oil.
  • Figure 1 is a process concept diagram for a conventional tritium removal facility.
  • Figure 2 is a flow diagram of a helium refrigerator impurity generation suppression and removal system for tritium removal equipment according to one embodiment of the present invention.
  • Figure 3 is a configuration diagram of a helium refrigerator impurity generation suppression and removal system for tritium removal equipment according to one embodiment of the present invention.
  • Figure 4 is a flowchart showing a method for suppressing and removing impurities generated in a helium refrigerator of a tritium removal facility according to one embodiment of the present invention.
  • FIG. 2 is a flow diagram of a tritium removal facility helium refrigerator impurity generation suppression and removal system according to an embodiment of the present invention
  • FIG. 3 is a diagram of a tritium removal facility helium refrigerator impurity generation suppression and removal system according to an embodiment of the present invention
  • FIG. 4 is a flow diagram showing a tritium removal facility helium refrigerator impurity generation suppression and removal method according to an embodiment of the present invention.
  • a helium refrigerator impurity generation suppression and removal system (100) for removing tritium largely includes a helium compressor (110), a compressed oil storage device (120), a nitrogen supply device (125), a cooling device (130), an oil removal device (140), a heat exchanger (150), an expansion device (155), an adsorption device (160), a helium storage device (170), a flow control valve device (180), a temperature detection device (190), and a control device (200).
  • a helium refrigerator impurity generation suppression and removal system (100) largely includes a helium gas supply line (I), a helium circulation line (2) for compressing and circulating helium supplied through the helium gas supply line (I) together with compression oil supplied through a compression oil circulation line (III) to be described later in a helium compressor (110), a compression oil circulation line (III) for circulating compression oil required for helium compression in the helium compressor (110), and a cooling water circulation line (IV) for preventing the compression oil from becoming high in temperature due to heat generated when helium and compression oil are compressed together in the helium compressor (110).
  • the above helium gas supply line (I) is configured to supply helium in one direction from a helium storage device (170) that can be a high-pressure helium bomb storing ultra-low temperature helium gas to the helium compressor (110), and to sequentially pass through a low-temperature first adsorber (161) and a high-temperature second adsorber (163).
  • a helium storage device (170) can be a high-pressure helium bomb storing ultra-low temperature helium gas to the helium compressor (110), and to sequentially pass through a low-temperature first adsorber (161) and a high-temperature second adsorber (163).
  • the first adsorber (161) can adsorb gases such as hydrogen having a low liquefaction point when helium gas is supplied from the outside, such as the helium storage device (170), and the second adsorber (163) can adsorb other gases such as nitrogen and hydrocarbons having a somewhat high liquefaction point, so that clean helium gas can be supplied before helium compression occurs in the helium compressor (110).
  • gases such as hydrogen having a low liquefaction point when helium gas is supplied from the outside, such as the helium storage device (170)
  • the second adsorber (163) can adsorb other gases such as nitrogen and hydrocarbons having a somewhat high liquefaction point, so that clean helium gas can be supplied before helium compression occurs in the helium compressor (110).
  • the helium compressor (110) supplied with clean helium gas through the helium gas supply line (I) can also recover and use helium gas through the helium gas circulation line (II).
  • the above helium gas circulation line (II) includes the helium compressor (110), an oil removal device (140) installed at the rear end of the helium compressor (110) to remove oil in order to recover and use the helium gas, a heat exchange device (150) for cooling the helium compressor (110) by exchanging heat with the high-temperature helium gas that has passed through the oil removal device (140), an adsorption device (160) for removing impurities in order to prevent the compression oil from being carbonized by the heat generated in the helium compressor (110) and generating impurities such as hydrocarbons, thereby reducing the efficiency of the heat exchange device (150), and an expansion device (165) for recovering the helium gas that has passed through the adsorption device (160) so that it can be reused in the helium compressor (110), and the helium gas coming out of the expansion device (165) is again It is configured to be circulated and supplied to the helium compressor (110) through a heat exchanger (150).
  • the heat exchanger (150) may include a first heat exchanger (151) and a second heat exchanger (153) arranged in series at the rear end of the oil removal device (140), and the first adsorber (161) of the adsorption device (160) is installed at the rear end of the second heat exchanger (153), and the second adsorber (163) is installed at the rear end of the first heat exchanger (151), so that impurities such as hydrocarbons generated by carbonization of compressed oil by heat generated from the helium compressor (110) are primarily removed in the second adsorber (163), and gases such as hydrogen at a lower temperature are secondarily removed in the first adsorber (161), so that the oil mist is removed by the oil removal device (140) and the clean helium gas from which the oil vapor is removed in the adsorption device (160) is sent to the expansion device (165). You can send it.
  • the above expansion device (165) may be an expansion turbine, and the efficiency of the heat exchanger can be maintained because impurities are removed by the adsorption device (150).
  • a cooler (167) is connected to the above expansion device (165) to cool and separate deuterium and tritium.
  • the helium gas expanded and heat-exchanged through the expansion device (165) and cooler (167) can be supplied to the helium compressor (110) sequentially through the second heat exchanger (163) and the first heat exchanger (161).
  • the temperature of the helium compressor (110) rises, and the high-temperature helium gas coming out of the helium compressor (110) can be cooled by going back and forth between the first heat exchanger (151) and the second heat exchanger (153), and the impurities such as hydrocarbons generated by the carbonization of the compressed oil by the heat generated in the helium compressor (110) are primarily removed through the second adsorber (163) arranged at the rear end of the first heat exchanger (151), and the gases such as hydrogen at a lower temperature than the first adsorber (161) arranged at the rear end of the first heat exchanger (153) are secondarily removed, and then the gas passes through the commercial expansion device (165) and then passes through the second heat exchanger (153) and the first Since helium gas is supplied to the helium compressor (110) through the heat exchanger (151), the efficiency of the heat exchanger (150) can be prevented from decreasing.
  • the above helium compressor (110) can compress helium gas using compression oil together with helium gas supplied through the helium gas supply line (I) and the helium gas circulation line (II), and the compression oil is configured to be circulated and supplied through the compression oil circulation line (III) between the compression oil storage device (120) and the helium compressor (110).
  • the compressed oil storage device (120) is configured to be cooled by a cooling water circulation line (IV) connected to a cooling device (130) so that the compressed oil storage device (120) can supply compressed oil at an initially set temperature to the helium compressor (110).
  • a helium refrigerator impurity generation suppression and removal system (100) includes a first control valve (181) for controlling the compressed oil flow rate of a helium compressor as a flow control valve device (180), a second control valve (183) for controlling the coolant flow rate supplied to the front end of the compressed oil storage device (120) of the compressed oil circulation line (III) to control the compressed oil temperature, and a third control valve (185) for controlling the ultra-low temperature helium flow rate coming from an expansion turbine.
  • the tritium removal facility helium refrigerator impurity generation suppression and removal system (100) comprises a first temperature detection sensor (191) for measuring the rear temperature (T1) of the helium compressor (110) at the rear end of the helium compressor (110) as the temperature detection device (190), a second temperature detection sensor (192) for measuring the compression oil temperature (T2) in the compression oil storage tank (121) of the compression oil storage device (120), a third temperature detection sensor (193) for measuring the helium gas temperature (T3) of the front end of the helium compressor (110) entering the helium compressor (110) from the first heat exchanger (151), and a first temperature detection sensor (194) for measuring the helium gas temperature (T3) of the front end of the first heat exchanger entering the first heat exchanger (151) via the oil removal device (140).
  • a first temperature detection sensor (191) for measuring the rear temperature (T1) of the helium compressor (110) at the rear end of the helium compressor (110) as the temperature detection device (190)
  • a second temperature detection sensor (192) for measuring the compression
  • It includes a fourth temperature detection sensor (194) for measuring the helium gas temperature (T4), a fifth temperature detection sensor (195) for measuring the temperature (T5) at the rear end of the first heat exchanger (151) where the gas heat-exchanged in the first heat exchanger (151) enters the first adsorber (161), and a sixth temperature detection sensor (196) for measuring the temperature (T6) at the front end of the first heat exchanger (151) where the gas enters the first heat exchanger (151) through the expansion device (165) and the second heat exchanger (153).
  • T4 for measuring the helium gas temperature (T4)
  • a fifth temperature detection sensor (195) for measuring the temperature (T5) at the rear end of the first heat exchanger (151) where the gas heat-exchanged in the first heat exchanger (151) enters the first adsorber (161)
  • a sixth temperature detection sensor (196) for measuring the temperature (T6) at the front end of the first heat exchanger (151) where the gas enters the first heat exchanger (151) through the expansion device (165) and the second heat exchanger (153
  • a helium refrigerator impurity generation suppression and removal system (100) may include a control device (200) that is signal-connected to a first temperature detection sensor (191) for measuring the rear end temperature (T1) of the helium compressor (110) at the rear end of the helium compressor (110) and controls the opening and closing amount of a first control valve (181) installed at the front end of the compressed oil storage device (120) of the compressed oil circulation line (III) to control the compressed oil flow rate supplied to the helium compressor (110).
  • a control device (200) that is signal-connected to a first temperature detection sensor (191) for measuring the rear end temperature (T1) of the helium compressor (110) at the rear end of the helium compressor (110) and controls the opening and closing amount of a first control valve (181) installed at the front end of the compressed oil storage device (120) of the compressed oil circulation line (III) to control the compressed oil flow rate supplied to the helium compressor (110).
  • control device (200) may include a second controller (203) that is signal-connected to a first temperature detection sensor (191) for measuring the rear temperature (T1) of the helium compressor (110) at the rear end of the helium compressor (110) and a second temperature detection sensor (192) for measuring the compressed oil temperature (T2) in the compressed oil storage tank (121) of the compressed oil storage device (120) and controls the opening and closing amount of a second control valve (183) installed at the rear end of the cooling water supply system (130) of the cooling device (130) of the cooling water circulation line (IV) to control the flow rate of the coolant supplied to the compressed oil storage device (120).
  • a second controller (203) that is signal-connected to a first temperature detection sensor (191) for measuring the rear temperature (T1) of the helium compressor (110) at the rear end of the helium compressor (110) and a second temperature detection sensor (192) for measuring the compressed oil temperature (T2) in the compressed oil storage tank (121) of the compressed oil storage device (120) and controls the opening and closing amount of a second control valve (183)
  • control device (200) includes a third controller (205) for monitoring the efficiency of the heat exchanger (150), the third controller (205) includes a third temperature detection sensor (193) for measuring the temperature (T3) of helium gas at the front end of the helium compressor (110) entering the helium compressor (110) from the first heat exchanger (151), a fourth temperature detection sensor (194) for measuring the temperature (T4) of helium gas at the front end of the first heat exchanger entering the first heat exchanger (151) through the oil removal device (140), and a fifth temperature detection sensor (194) for measuring the temperature (T5) of the rear end of the first heat exchanger (151) where the gas heat-exchanged in the first heat exchanger (151) enters the first adsorber (161).
  • the third controller (205) includes a third temperature detection sensor (193) for measuring the temperature (T3) of helium gas at the front end of the helium compressor (110) entering the helium compressor (110) from the first heat exchanger (151), a fourth temperature detection sensor (194) for measuring the temperature (T4) of helium
  • the temperature detection sensor (195) and the sixth temperature detection sensor (196) for measuring the temperature (T6) of the front end of the first heat exchanger (151) that enters the first heat exchanger (151) through the expansion device (165) and the second heat exchanger (153) are signal-connected to control the opening and closing amount of the third control valve (185) that can supply ultra-low temperature helium to the first adsorber (161), thereby controlling the amount of helium gas supplied from the rear end of the expansion turbine (165).
  • the method for suppressing the generation of impurities in a helium refrigerator for removing tritium is such that the first controller (201) causes the first temperature detection sensor (191) installed at the rear end of the helium compressor (110) to measure the rear end temperature (T1) of the helium compressor (110) (S11) and determine whether it is above a predetermined temperature (TT) (S12).
  • the first controller (201) determines that the temperature (T1) at the rear end of the helium compressor (110) is higher than a predetermined temperature (TT), it controls the opening and closing amount of the first control valve (181) installed at the rear end of the compressed oil storage device (120) of the compressed oil circulation line (III) to control the compressed oil flow rate supplied to the helium compressor (110) (S13), thereby immediately suppressing the rise in the temperature of the helium gas at the rear end of the helium compressor (110).
  • TT predetermined temperature
  • the first controller (201) detects the temperature (T1) at the rear end of the helium compressor (110) with the first temperature detection sensor (191) and controls the temperature at the rear end of the helium compressor (110) by controlling the compression oil flow rate with the first control valve (181).
  • the second controller (203) independently of the first controller (201) receives the rear temperature (T1) of the helium compressor (110) from the first temperature detection sensor (191) installed at the rear of the helium compressor (110) and determines whether it is in an upward trend of a certain slope or more (21).
  • the second controller (203) receives the temperature (T2) inside the compressed oil storage tank (121) of the compressed oil storage device (120) from the second temperature detection sensor (192) (S22), and if the temperature (T2) inside the compressed oil storage tank is determined to have an upward trend exceeding a certain slope (S23), it controls the opening/closing amount of the second control valve (183) installed at the rear end of the cooling water supply system (130) of the cooling water circulation line (IV) to control the cooling water flow rate supplied to the compressed oil storage device (120) (S24).
  • the second controller (203) controls the opening and closing amount of the second control valve (183) installed in front of the cooling water storage tank (131) by using the rear temperature (T1) of the helium compressor (110) and the internal temperature (T2) of the compressed oil storage tank, thereby preventing heat accumulation in the compressed oil storage tank (121) of the compressed oil storage device (120).
  • the third controller (205) receives the temperature (T3) of the recovered helium gas at the rear end of the first heat exchanger (151) that enters the helium compressor (110) from the first heat exchanger (151) from the third temperature detection sensor (193) (S31), receives the temperature (T4) of the helium gas at the front end of the forward first heat exchanger that enters the first heat exchanger (151) through the oil removal device (140) from the fourth temperature detection sensor (194) (S32), and receives the temperature (T4) of the helium gas at the rear end of the forward first heat exchanger (151) that enters the first adsorber (161) through the fifth temperature detection sensor (195).
  • the helium gas temperature (T5) is received (S33), the recovery helium gas temperature (T6) at the front end of the first heat exchanger (151) that enters the first heat exchanger (151) through the expansion device (165) and the second heat exchanger (153) from the sixth temperature detection sensor (197) is received (S34), the temperature increase rate is monitored to determine whether it is below a predetermined efficiency by an efficiency formula combining each temperature (S35), and the opening/closing amount of the third control valve (185) at the rear end of the expansion turbine (165) is controlled (S36) to control the amount of helium gas supplied to the first adsorber (161) from the rear end of the expansion turbine (165).
  • the third controller (205) measures the efficiency of the first heat exchanger (151) by measuring the temperature (T3) of the helium gas recovered at the rear of the first heat exchanger measured by the third temperature detection sensor (193), the temperature (T4) of the helium gas forward of the first heat exchanger measured by the fourth temperature detection sensor (194), the temperature (T5) of the helium gas forward of the first heat exchanger measured by the fifth temperature detection sensor (195), and the temperature (T6) of the helium gas forward of the first heat exchanger measured by the sixth temperature detection sensor (196), thereby monitoring the first heat exchanger (151), and controlling the amount of helium gas supplied to the first adsorber (161) from the rear of the expansion turbine (165), thereby controlling the first
  • the performance of the first heat exchanger (151) can be maintained by removing impurities other than hydrogen adsorbed in the heat exchanger (151).
  • the third controller (205) may be a heat exchanger efficiency monitoring controller capable of measuring the efficiency of the first heat exchanger (161) with the forward and reverse front and rear temperatures (T3, T4, T5, T6) of the first heat exchanger (161), and the third control valve (185) may be an adsorber flow rate forming valve (V3).
  • the first adsorber (161) and the second adsorber (163) are connected in series, so that gases such as hydrogen having a low liquefaction point can be adsorbed in the first adsorber (161), and gases such as nitrogen and hydrocarbons having a somewhat high liquefaction point can be adsorbed in the second adsorber (163), thereby protecting the expansion turbine (165) and maintaining the efficiency of the first and second heat exchangers (151, 153).
  • the first control valve (181) which is a compressed oil flow rate control valve (V1), is controlled by the first controller (201) to increase the compressed oil flow rate, thereby suppressing the rise in the temperature at the rear end of the helium compressor (110).
  • the second controller (203) sends a signal to the second control valve (183), which is a cooling water flow rate control valve (V2), according to the rate of increase of the temperature (T1) at the rear end of the helium compressor (110) and the temperature (T2) inside the compressed oil storage device (120), thereby increasing the cooling water flow rate and controlling the temperature of the compressed oil storage tank (121) of the compressed oil storage device (120).
  • V2 cooling water flow rate control valve
  • the first adsorber (161) and the second adsorber (163) are connected in series to remove gases such as hydrocarbons, nitrogen, oxygen, and hydrogen that are generated or introduced from the outside and cannot be controlled by temperature.
  • the first adsorber (161) above removes gases such as hydrogen that are adsorbed at ultra-low temperatures
  • the second adsorber (163) above can remove gases with relatively high adsorption temperatures such as hydrocarbons and nitrogen.
  • Impurities can be monitored by the efficiency of the first heat exchanger (151), and since gas analysis is not required, the efficiency can be quickly monitored and the heat exchange efficiency can be maintained by forming the adsorption flow rate of the first adsorber (161).
  • the compressed oil storage device (120) may further include a nitrogen supply device (125) that injects nitrogen into the compressed oil storage tank (121) to prevent oxidation of the compressed oil in order to reduce contact between oxygen flowing into the compressed oil storage tank (121) when replenishing or exchanging the compressed oil and the compressed oil.
  • a nitrogen supply device (125) that injects nitrogen into the compressed oil storage tank (121) to prevent oxidation of the compressed oil in order to reduce contact between oxygen flowing into the compressed oil storage tank (121) when replenishing or exchanging the compressed oil and the compressed oil.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

A system for suppressing the generation of and removing impurities in a helium refrigerator according to the present invention comprises: a helium gas supply line for supplying helium to a helium compressor; a compressed oil circulation line for circulating and supplying compressed oil required to compress helium in the helium compressor; a helium circulation line that circulates the helium, supplied via the helium gas supply line, to compress the helium in the helium compressor together with the compressed oil supplied via the compressed oil circulation line, and then collect and use same; and a cooling water circulation line of a compressed oil storage device, wherein the cooling water circulation line is for preventing the compressed oil from becoming high in temperature due to heat generated when the helium and the compressed oil are compressed together in the helium compressor. The system includes a first controller signally connected to a first temperature detection sensor for measuring the temperature of the rear end of the helium compressor from the rear end of the helium circulation line, and controls the opening amount of a first control valve, installed at the front end of the compressed oil storage device of the compressed oil circulation line, to control the flow rate of compressed oil supplied to the helium compressor, and thereby control the temperature at the rear end of the helium compressor.

Description

헬륨냉동기 불순물 생성 억제와 제거 시스템 및 방법Helium refrigerator impurity generation suppression and removal system and method

본 발명은 헬륨냉동기 불순물 생성 억제와 제거 시스템 및 방법에 관한 것으로, 보다 상세하게는, 삼중수소제거설비의 삼중수소(T2) 농축단계의 초저온 증류공정에 사용되는 헬륨냉동기에서 헬륨정화운전수행을 위해 운전을 정지할 필요가 없는 헬륨냉동기 불순물 생성 억제와 제거 시스템 및 방법에 관한 것이다.The present invention relates to a system and method for suppressing and removing impurities generated in a helium refrigerator, and more particularly, to a system and method for suppressing and removing impurities generated in a helium refrigerator used in an ultra-low temperature distillation process of a tritium (T2) enrichment step of a tritium removal facility, which does not require stopping operation for performing helium purification operation.

수소의 동의원소인 삼중수소(T)는 약 12.3 년의 반감기를 갖는 방사성핵종으로, 인공적으로는 대부분 원자력발전소 운전과정에서 발생하며, 특히 그 발생률이 높은 일부 가압중수로 (Pressurized Heavy Water Reactor)에서는 방사선피폭 저감목적으로 감속재 (Moderator) 및 냉각재 (Coolant)로 사용되는 중수에서 삼중수소가 삼중수소제거설비(TRF : Tritium Removal Facility)에 의해 추출되는데, 도 1은 그 설비의 공정을 나타낸 것이다.Tritium (T), an synonymous element of hydrogen, is a radioactive nuclide with a half-life of approximately 12.3 years. It is artificially generated mostly during the operation of nuclear power plants. In particular, in some pressurized heavy water reactors (PWRs) where the generation rate is high, tritium is extracted from heavy water used as a moderator and coolant for the purpose of reducing radiation exposure by a Tritium Removal Facility (TRF). Figure 1 illustrates the process of the facility.

가압중수로의 냉각재 및 감속재내에서, 삼중수소는 중수(D2O)의 중수소원자(D) 하나를 치환한 형태인 삼중수소수(DTO) 형태로 존재하며 그 농도는 감속재계통에서 10 Ci/kg 수준이다. In the coolant and moderator of a pressurized heavy water reactor, tritium exists in the form of tritiated water (DTO), which is a form in which one deuterium atom (D) of heavy water (D2O) is substituted, and its concentration is at the level of 10 Ci/kg in the moderator system.

도 1에 도시된 바와 같이, 삼중수소제거설비(10)에 있어서, 삼중수소수 형태로 존재하는 삼중수소는 촉매교환공정(1)의 액체상측 입력배관(4)을 통해 발전소 계통으로부터 촉매교환공정(1)에 유입된 후 아래의 촉매교환반응에 의해 DT 기체로 치환되어 유입된 중수로부터 제거된다. As illustrated in Fig. 1, in the tritium removal facility (10), tritium existing in the form of tritium water is introduced from the power plant system to the catalyst exchange process (1) through the liquid side input pipe (4) of the catalyst exchange process (1), and is then replaced with DT gas by the catalyst exchange reaction below and removed from the introduced heavy water.

삼중수소가 제거된 중수(D2O)는 촉매교환공정(1)의 액체상측 배출배관(5)을 통해 발전소 계통으로 회수된다.Heavy water (D2O) from which tritium has been removed is returned to the power plant system through the liquid side discharge pipe (5) of the catalyst exchange process (1).

DTO(액체) + D2(기체) ↔ D2O(액체) + DT(기체)DTO (liquid) + D2 (gas) ↔ D2O (liquid) + DT (gas)

DT(기체)로 치환된 삼중수소는 촉매교환공정(1) 기체상측 배출배관(6)을 통해 초저온 증류공정(2)으로 이동된 후, 끓는점 차이로 인해 중수소 기체(D2)와 삼중수소(T2)로 최종적으로 분리추출된다. Tritium replaced with DT (gas) is transferred to the ultra-low temperature distillation process (2) through the gas-side exhaust pipe (6) of the catalytic exchange process (1), and is finally separated and extracted into deuterium gas (D2) and tritium (T2) due to the difference in boiling points.

또한 초저온 증류공정(2)에서 기상으로 배출된 중수소 기체는 촉매교환공정(1)의 기체상측 입력배관(7)을 통해 촉매교환공정(1)의 입력 기체로 공급된다.In addition, the deuterium gas discharged as a gas in the ultra-low temperature distillation process (2) is supplied as an input gas to the catalyst exchange process (1) through the gas upper side input pipe (7) of the catalyst exchange process (1).

삼중수소(T2)는 초저온 증류공정(3)으로 농축공급배관(8)을 통해 공급되는 데 초저온 증류공정(3)에서 헬륨냉동기가 사용되고 있다.Tritium (T2) is supplied through a concentration supply pipe (8) to the ultra-low temperature distillation process (3), and a helium refrigerator is used in the ultra-low temperature distillation process (3).

헬륨냉동기의 주요기기인 헬륨압축기는 온도가 초기설정 이후 압축유저장조 온도에 의해서만 제어되어 냉각수 온도변화에 따라 헬륨압축기 후단 온도의 변화가 큰 문제점이 있다.The helium compressor, which is the main device of the helium refrigerator, has a problem in that the temperature at the rear of the helium compressor changes significantly depending on the change in the cooling water temperature because the temperature is controlled only by the temperature of the compressed oil storage tank after the initial setting.

헬륨압축기에서 발생하는 열에 의해 압축유가 탄화되어 탄화수소와 같은 불순물이 생성되며 불순물 일부가 오일제거설비(ORS; Oil Removal System)를 통과하여 열교환기에 응축된다.The heat generated in the helium compressor carbonizes the compressed oil, creating impurities such as hydrocarbons. Some of the impurities pass through the Oil Removal System (ORS) and are condensed in the heat exchanger.

응축된 불순물은 열교환을 방해하여 열교환기 효율을 낮추기 때문에, 특정 효율에 도달하는 경우에는 헬륨냉동기 운전을 정지시키고, 불순물을 억제와 제거하기 위해 헬륨정화운전을 수행하여야 하는 문제점이 있다.There is a problem that when a certain efficiency is reached, the helium refrigerator operation must be stopped and helium purification operation must be performed to suppress and remove the impurities, because the condensed impurities hinder heat exchange and lower the efficiency of the heat exchanger.

헬륨냉동기 정지 후 재기동은 표준공정 기준 8일이 소요되는 문제점이 있다.There is a problem that restarting a helium refrigerator after stopping it takes 8 days according to the standard process.

그런데, 기존 기술에 있어서는 흡착기가 열교환기 후단에 설치되어 있기 때문에 열교환기에 흡착되는 불순물을 제거할 수 없어 열교환기 효율감소에 대응할 수 없어서 헬륨압축기 운전 기간에 제한이 생긴다.However, in the existing technology, since the adsorber is installed at the rear end of the heat exchanger, impurities adsorbed in the heat exchanger cannot be removed, and thus the efficiency of the heat exchanger cannot be reduced, which limits the operating period of the helium compressor.

또한 압축유(윤활유)는 온도가 올라가거나 산소와 만나면 탄화산소 등으로 분해되는 성질이 있어 산소와의 접촉을 차단해야 하나, 압축유저장조로 유입되는 산소에 대한 방지대책이 없다.In addition, compressed oil (lubricating oil) has the property of decomposing into carbon dioxide and other oxygen when the temperature rises or when it comes into contact with oxygen, so contact with oxygen must be blocked, but there is no measure to prevent oxygen from flowing into the compressed oil storage tank.

헬륨냉동기 불순물 생성 억제와 제거 시스템 및 방법은 촉매공정을 예를들어 설명하였지만 수소 액화기 등 다른 초저온 시스템에 적용이 가능하다.The system and method for suppressing and removing impurities in a helium refrigerator have been described using a catalytic process as an example, but can be applied to other ultra-low temperature systems such as hydrogen liquefiers.

본 발명은 이러한 문제점을 해결하기 위하여 안출된 것으로, 본 발명의 목적은 열교환기에 흡착되는 수소 이외의 불순물 생성을 억제하고 생성된 불순물을 제거함으로써 열교환기의 성능을 유지할 수 있으며, 압축유 보충 또는 교환시 유입되는 산소가 압축유와 접촉되는 것을 줄일 수 있는 헬륨냉동기 불순물 생성 억제와 제거 시스템 및 방법를 제공하는 것이다.The present invention has been devised to solve such problems, and the purpose of the present invention is to provide a helium refrigerator impurity generation suppression and removal system and method, which can maintain the performance of a heat exchanger by suppressing the generation of impurities other than hydrogen adsorbed in the heat exchanger and removing the generated impurities, and can reduce the contact of oxygen introduced during compression oil replenishment or exchange with the compression oil.

본 발명의 헬륨냉동기 불순물 생성 억제와 제거 시스템은 헬륨압축기에 헬륨을 공급하는 헬륨기체공급라인, 상기 헬륨압축기에서 헬륨압축시 필요한 압축유를 순환공급하는 압축유순환라인, 상기 헬륨기체공급라인을 통해 공급된 헬륨을 상기 압축유순환라인을 통해 공급된 압축유와 함께 상기 헬륨압축기에서 압축 후 회수하여 사용하도록 순환시키는 헬륨순환라인 및 상기 헬륨압축기에서 헬륨과 압축유를 같이 압축하는 경우 발생하는 열에 의해 압축유가 고온이 되는 것을 방지하기 위한 압축유저장장치의 냉각수순환라인을 포함하며, 상기 헬륨순환라인의 상기 헬륨압축기 후단에서 상기 헬륨압축기의 후단 온도를 측정하기 위한 제 1 온도검출센서와 신호적으로 접속되어 상기 압축유순환라인의 압축유저장장치 전단에 설치되는 제 1 제어밸브의 개폐량을 제어하여 상기 헬륨압축기에 공급되는 압축유 유량을 제어하여 상기 헬륨압축기 후단 온도를 제어하는 제 1 제어기를 포함하는 것을 특징으로 한다.The system for suppressing and removing impurities in a helium refrigerator of the present invention comprises a helium gas supply line for supplying helium to a helium compressor, a compression oil circulation line for circulating and supplying compression oil required for compressing helium in the helium compressor, a helium circulation line for circulating the helium supplied through the helium gas supply line together with the compression oil supplied through the compression oil circulation line for compressing and recovering the helium in the helium compressor and using it, and a cooling water circulation line of a compression oil storage device for preventing the compression oil from becoming high in temperature due to heat generated when helium and compression oil are compressed together in the helium compressor, and a first controller for controlling the opening and closing amount of a first control valve installed in front of the compression oil storage device of the compression oil circulation line by controlling the flow rate of compression oil supplied to the helium compressor at the rear end of the helium compressor, signal-connected to a first temperature detection sensor for measuring the temperature at the rear end of the helium compressor in the helium circulation line, thereby controlling the temperature at the rear end of the helium compressor. It is characterized by.

본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 시스템 및 방법에 의하면, 상기 헬륨압축기 후단 온도가 높아지면 상기 제 1 제어기에 의해 압축유 유량제어 밸브인 제 1 제어밸브를 제어하여 압축유 유량을 늘려 상기 헬륨압축기 후단 온도 상승을 억제할 수 있다. According to a system and method for suppressing and removing impurities generated in a helium refrigerator for removing tritium according to one embodiment of the present invention, when the temperature at the rear end of the helium compressor increases, the first control valve, which is a compression oil flow control valve, is controlled by the first controller to increase the compression oil flow rate, thereby suppressing the rise in the temperature at the rear end of the helium compressor.

또한, 상기 헬륨압축기의 온도가 고온으로 계속 유지되면 상기 헬륨압축기 후단 온도와 상기 압축유저장장치 내부의 온도의 상승률에 따라 상기 제 2 제어기가 냉각수 유량제어 밸브인 제 2 제어밸브로 신호를 보내 냉각수 유량을 증가시켜 상기 압축유저장장치의 압축유저장조의 온도를 조절할 수 있다. In addition, when the temperature of the helium compressor is maintained at a high temperature, the second controller sends a signal to the second control valve, which is a cooling water flow control valve, to increase the cooling water flow rate according to the rate of increase of the temperature at the rear end of the helium compressor and the temperature inside the compressed oil storage device, thereby controlling the temperature of the compressed oil storage tank of the compressed oil storage device.

또한, 온도조절에도 불가하고 생성되거나 외부에서 유입된 탄화수소, 질소, 산소, 수소 등의 기체를 제거하기 위해 상기 제 1 흡착기와 상기 제 2 흡착기가 직렬로 연결되어 있다. In addition, the first adsorber and the second adsorber are connected in series to remove gases such as hydrocarbons, nitrogen, oxygen, and hydrogen that are generated or introduced from the outside and cannot be controlled by temperature.

상기 제 1 흡착기는 초저온에 흡착되는 수소와 같은 기체를 제거하며, 상기 제 2 흡착기는 탄화수소, 질소 등 상대적으로 흡착온도가 높은 기체를 제거할 수 있다. The first adsorber removes gases such as hydrogen that are adsorbed at ultra-low temperatures, and the second adsorber can remove gases with relatively high adsorption temperatures such as hydrocarbons and nitrogen.

불순물은 상기 제 1 열교환기의 효율에 의해 감시될 수 있으며, 기체분석이 필요하지 않으므로 신속하게 효율을 감시하며 상기 제 1 흡착기의 흡착 유량을 형성하여 열교환 효율을 유지할 수 있다. Impurities can be monitored by the efficiency of the first heat exchanger, and since gas analysis is not required, the efficiency can be monitored quickly and the adsorption flow rate of the first adsorber can be formed to maintain the heat exchange efficiency.

추가적으로 상기 압축유저장장치는 압축유저장조에 압축유 보충 또는 교환 시 유입되는 산소가 압축유와 접촉되는 것을 줄이기 위해 상기 압축유저장조에 질소를 주입시켜 압축유 산화를 방지하는 질소주입장치를 더 포함할 수 있다.Additionally, the compressed oil storage device may further include a nitrogen injection device that injects nitrogen into the compressed oil storage tank to prevent oxidation of the compressed oil in order to reduce contact between oxygen introduced into the compressed oil storage tank when replenishing or replacing the compressed oil and the compressed oil.

도 1은 종래의 삼중수소제거설비에 관한 공정 개념도,Figure 1 is a process concept diagram for a conventional tritium removal facility.

도 2는 본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 시스템의 유동 흐름도,Figure 2 is a flow diagram of a helium refrigerator impurity generation suppression and removal system for tritium removal equipment according to one embodiment of the present invention.

도 3은 본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 시스템의 구성도, 및Figure 3 is a configuration diagram of a helium refrigerator impurity generation suppression and removal system for tritium removal equipment according to one embodiment of the present invention, and

도 4는 본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 방법을 나타내는 순서도.Figure 4 is a flowchart showing a method for suppressing and removing impurities generated in a helium refrigerator of a tritium removal facility according to one embodiment of the present invention.

본 발명의 이점 및/또는 특징, 그리고 그것들을 달성하는 방법은 첨부되는 도면과 함께 상세하게 후술되어 있는 실시예들을 참조하면 명확해질 것이다. 그러나, 본 발명은 이하에서 개시되는 실시예들에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 것이며, 단지 본 실시예들은 본 발명의 개시가 완전하도록 하며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 발명은 청구항의 범주에 의해 정의될 뿐이다. 명세서 전체에 걸쳐 동일 참조 부호는 동일 구성요소를 지칭한다.The advantages and/or features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

이하에서는 첨부된 도면을 참조하여 본 발명의 실시예들을 상세히 설명하기로 한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

도 2는 본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 시스템의 유로구성도이고, 도 3은 본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 시스템의 구성도이고, 도 4는 본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 방법을 나타내는 흐름도이다.FIG. 2 is a flow diagram of a tritium removal facility helium refrigerator impurity generation suppression and removal system according to an embodiment of the present invention, FIG. 3 is a diagram of a tritium removal facility helium refrigerator impurity generation suppression and removal system according to an embodiment of the present invention, and FIG. 4 is a flow diagram showing a tritium removal facility helium refrigerator impurity generation suppression and removal method according to an embodiment of the present invention.

도 2 및 도 3에 도시된 바와 같이, 본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 시스템(100)은 크게 헬륨압축기(110), 압축유저장장치(120), 질소공급장치(125), 냉각장치(130), 오일제거장치(140), 열교환장치(150), 팽창장치(155), 흡착장치(160), 헬륨저장장치(170), 유량제어 밸브장치(180), 온도검출장치(190), 및 제어장치(200)를 포함한다.As shown in FIGS. 2 and 3, a helium refrigerator impurity generation suppression and removal system (100) according to an embodiment of the present invention for removing tritium largely includes a helium compressor (110), a compressed oil storage device (120), a nitrogen supply device (125), a cooling device (130), an oil removal device (140), a heat exchanger (150), an expansion device (155), an adsorption device (160), a helium storage device (170), a flow control valve device (180), a temperature detection device (190), and a control device (200).

도 2에 도시된 바와 같이, 본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 시스템(100)은 크게 헬륨기체공급라인(I)과, 상기 헬륨기체공급라인(I)을 통해 공급된 헬륨을 이후 설명하는 압축유순환라인(III)을 통해 공급된 압축유와 함께 헬륨압축기(110)에서 압축 후 순환시키는 헬륨순환라인(2)과, 상기 헬륨압축기(110)에서 헬륨압축시 필요한 압축유를 순환시키는 압축유순환라인(III)과, 상기 헬륨압축기(110)에서 헬륨과 압축유를 같이 압축하는 경우 발생하는 열에 의해 압축유가 고온이 되는 것을 방지하기 위한 냉각수순환라인(IV)을 포함한다. As illustrated in FIG. 2, a helium refrigerator impurity generation suppression and removal system (100) according to an embodiment of the present invention largely includes a helium gas supply line (I), a helium circulation line (2) for compressing and circulating helium supplied through the helium gas supply line (I) together with compression oil supplied through a compression oil circulation line (III) to be described later in a helium compressor (110), a compression oil circulation line (III) for circulating compression oil required for helium compression in the helium compressor (110), and a cooling water circulation line (IV) for preventing the compression oil from becoming high in temperature due to heat generated when helium and compression oil are compressed together in the helium compressor (110).

상기 헬륨기체공급라인(I)은 초저온 헬륨기체를 저장하는 고압의 헬륨봄베일 수 있는 헬륨저장장치(170)와, 상기 헬륨저장장치(170)로부터 상기 헬륨압축기(110)에 헬륨을 일방향으로 공급하되, 저온의 제 1 흡착기(161)와 고온의 제 2 흡착기(163)를 순차적으로 거치도록 구성된다.The above helium gas supply line (I) is configured to supply helium in one direction from a helium storage device (170) that can be a high-pressure helium bomb storing ultra-low temperature helium gas to the helium compressor (110), and to sequentially pass through a low-temperature first adsorber (161) and a high-temperature second adsorber (163).

상기 제 1 흡착기(161)는 상기 헬륨저장장치(170) 등 외부로부터 헬륨기체가 공급될 때 액화점이 낮은 수소와 같은 기체를 흡착할 수 있고, 상기 제 2 흡착기(163)는 액화점이 다소 높은 질소, 탄화수소 등 기타 기체를 흡착하여 상기 헬륨압축기(110)에서 헬륨 압축이 일어나기 전에 청정 헬륨기체가 공급되게 할 수 있다,The first adsorber (161) can adsorb gases such as hydrogen having a low liquefaction point when helium gas is supplied from the outside, such as the helium storage device (170), and the second adsorber (163) can adsorb other gases such as nitrogen and hydrocarbons having a somewhat high liquefaction point, so that clean helium gas can be supplied before helium compression occurs in the helium compressor (110).

상기 헬륨기체공급라인(I)을 통해 청정 헬륨기체가 공급되는 상기 헬륨압축기(110)는 상기 헬륨기체순환라인(II)을 통해 헬륨기체를 회수하여 사용할 수도 있다.The helium compressor (110) supplied with clean helium gas through the helium gas supply line (I) can also recover and use helium gas through the helium gas circulation line (II).

상기 헬륨기체순환라인(II)은 상기 헬륨압축기(110)와, 상기 헬륨압축기(110) 후단에 설치되어 상기 헬륨기체를 회수하여 사용하기 위해서 오일을 제거하기 위한 오일제거장치(140)와, 상기 오일제거장치(140)를 통과한 고온의 헬륨기체와 열교환하여 상기 헬륨압축기(110)를 냉각시키기 위한 열교환장치(150)와, 상기 헬륨압축기(110)에서 발생하는 열에 의해 압축유가 탄화되어 탄화수소와 같은 불순물이 발생되어 상기 열교환장치(150)의 효율을 떨어뜨리는 것을 방지하기 위해서 불순물을 제거하기 위한 흡착장치(160)와, 상기 흡착장치(160)를 통과한 헬륨기체를 회수하여 상기 헬륨압축기(110)에서 재사용할 수 있도록 하기 위한 팽창장치(165)를 포함하며, 상기 팽창장치(165)에서 나온 헬륨기체는 다시 상기 열교환장치(150)를 거쳐 상기 헬륨압축기(110)에 순환공급되도록 구성된다.The above helium gas circulation line (II) includes the helium compressor (110), an oil removal device (140) installed at the rear end of the helium compressor (110) to remove oil in order to recover and use the helium gas, a heat exchange device (150) for cooling the helium compressor (110) by exchanging heat with the high-temperature helium gas that has passed through the oil removal device (140), an adsorption device (160) for removing impurities in order to prevent the compression oil from being carbonized by the heat generated in the helium compressor (110) and generating impurities such as hydrocarbons, thereby reducing the efficiency of the heat exchange device (150), and an expansion device (165) for recovering the helium gas that has passed through the adsorption device (160) so that it can be reused in the helium compressor (110), and the helium gas coming out of the expansion device (165) is again It is configured to be circulated and supplied to the helium compressor (110) through a heat exchanger (150).

상기 열교환장치(150)는 상기 오일제거장치(140) 후단에 직렬로 배치되는 제 1 열교환기(151)와 제 2 열교환기(153)를 포함할 수 있으며, 상기 흡착장치(160)의 제 1 흡착기(161)가 상기 제 2 열교환기(153) 후단에 설치되며, 상기 제 2 흡착기(163)가 상기 제 1 열교환기(151) 후단에 설치되어, 상기 헬륨압축기(110)에서 발생하는 열에 의해 압축유가 탄화되어 발생한 탄화수소와 같은 불순물을 상기 제 2 흡착기(163)에서 1차적으로 제거하고, 보다 저온의 수소와 같은 기체를 상기 제 1 흡착기(161)에서 2차적으로 제거하여, 오일제거장치(140)에 의해 오일미스트가 제거되고 또한 흡착장치(160)에서 오일 증기가 제거된 청정 헬륨기체를 팽창장치(165)로 보낼 수 있다.The heat exchanger (150) may include a first heat exchanger (151) and a second heat exchanger (153) arranged in series at the rear end of the oil removal device (140), and the first adsorber (161) of the adsorption device (160) is installed at the rear end of the second heat exchanger (153), and the second adsorber (163) is installed at the rear end of the first heat exchanger (151), so that impurities such as hydrocarbons generated by carbonization of compressed oil by heat generated from the helium compressor (110) are primarily removed in the second adsorber (163), and gases such as hydrogen at a lower temperature are secondarily removed in the first adsorber (161), so that the oil mist is removed by the oil removal device (140) and the clean helium gas from which the oil vapor is removed in the adsorption device (160) is sent to the expansion device (165). You can send it.

상기 팽창장치(165)는 팽창터빈일 수 있는데, 상기 흡착장치(150)에 의해서 불순물을 제거하기 때문에 열교환기 효율을 유지할 수 있다.The above expansion device (165) may be an expansion turbine, and the efficiency of the heat exchanger can be maintained because impurities are removed by the adsorption device (150).

상기 팽창장치(165)에는 냉각기(167)가 연결되어 중수소와 삼중수소를 냉각하여 분리할 수 있다.A cooler (167) is connected to the above expansion device (165) to cool and separate deuterium and tritium.

상기 팽창장치(165)와 냉각기(167)를 통해 팽창되고 열교환을 한 헬륨기체는 상기 제 2 열교환기(163)와 상기 제 1 열교환기(161)를 순차로 거쳐 헬륨압축기(110)에 공급될 수 있다.The helium gas expanded and heat-exchanged through the expansion device (165) and cooler (167) can be supplied to the helium compressor (110) sequentially through the second heat exchanger (163) and the first heat exchanger (161).

상기 헬륨압축기(110)에서 헬륨기체가 압축유저장장치(120)에서 공급되는 압축유와 함께 압축되면, 상기 헬륨압축기(110)의 온도가 상승하는데, 상기 헬륨압축기(110)에서 나온 고온 헬륨기체는 상기 제 1 열교환기(151)와 상기 제 2 열교환기(153)를 왕복함으로써 냉각될 수 있으며, 상기 제 1 열교환기(151) 후단에 배치된 상기 제 2 흡착기(163)를 통해 상기 헬륨압축기(110)에서 발생하는 열에 의해 압축유가 탄화되어 발생한 탄화수소와 같은 불순물을 1차적으로 제거하고, 상기 제 1 열교환기(153) 후단에 배치된 상기 제 1 흡착기(161)에서 보다 저온의 수소와 같은 기체를 2차적으로 제거한 후 상가 팽창장치(165)를 거친 후 제 2 열교환기(153)와 제 1 열교환기(151) 순으로 거쳐 상기 헬륨압축기(110)에 헬륨기체를 공급하기 때문에 상기 열교환장치(150)의 효율이 떨어지는 것을 방지할 수 있다. When the helium gas is compressed together with the compressed oil supplied from the compressed oil storage device (120) in the helium compressor (110), the temperature of the helium compressor (110) rises, and the high-temperature helium gas coming out of the helium compressor (110) can be cooled by going back and forth between the first heat exchanger (151) and the second heat exchanger (153), and the impurities such as hydrocarbons generated by the carbonization of the compressed oil by the heat generated in the helium compressor (110) are primarily removed through the second adsorber (163) arranged at the rear end of the first heat exchanger (151), and the gases such as hydrogen at a lower temperature than the first adsorber (161) arranged at the rear end of the first heat exchanger (153) are secondarily removed, and then the gas passes through the commercial expansion device (165) and then passes through the second heat exchanger (153) and the first Since helium gas is supplied to the helium compressor (110) through the heat exchanger (151), the efficiency of the heat exchanger (150) can be prevented from decreasing.

상기 헬륨압축기(110)는 상기 헬륨기체공급라인(I)과 상기 헬륨기체순환라인(II)을 통해 공급되는 헬륨기체와 함께 압축유를 이용하여 헬륨기체를 압축할 수 있는데, 상기 압축유는 상기 압축유저장장치(120)와 상기 헬륨압축기(110) 사이의 압축유순환라인(III)을 통해 순환공급되도록 구성된다.The above helium compressor (110) can compress helium gas using compression oil together with helium gas supplied through the helium gas supply line (I) and the helium gas circulation line (II), and the compression oil is configured to be circulated and supplied through the compression oil circulation line (III) between the compression oil storage device (120) and the helium compressor (110).

상기 헬륨압축기(110)에서 상기 헬륨기체와 함께 압축유가 압축될 때 상기 헬륨압축기(110)의 온도가 상승하게 되는데, 상기 압축유저장장치(120)가 초기 설정된 온도의 압축유를 상기 헬륨압축기(110)에 공급할 수 있도록 상기 압축유저장장치(120)는 냉각장치(130)와 연결된 냉각수순환라인(IV)에 의해서 냉각되도록 구성된다.When the compressed oil is compressed together with the helium gas in the helium compressor (110), the temperature of the helium compressor (110) rises. The compressed oil storage device (120) is configured to be cooled by a cooling water circulation line (IV) connected to a cooling device (130) so that the compressed oil storage device (120) can supply compressed oil at an initially set temperature to the helium compressor (110).

도 3에 도시된 바와 같이, 본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 시스템(100)은 유량제어 밸브장치(180)로서 헬륨압축기의 압축유 유량을 조절하는 제 1 제어밸브(181)와, 상기 압축유순환라인(III)의 압축유저장장치(120) 전단에 공급되는 냉각수유량을 제어하여 압축유 온도를 조절하는 제 2 제어밸브(183)와, 팽창터빈에서 나오는 초저온헬륨 유량을 제어하기 위한 제 3 제어밸브(185)를 포함한다.As illustrated in FIG. 3, a helium refrigerator impurity generation suppression and removal system (100) according to one embodiment of the present invention includes a first control valve (181) for controlling the compressed oil flow rate of a helium compressor as a flow control valve device (180), a second control valve (183) for controlling the coolant flow rate supplied to the front end of the compressed oil storage device (120) of the compressed oil circulation line (III) to control the compressed oil temperature, and a third control valve (185) for controlling the ultra-low temperature helium flow rate coming from an expansion turbine.

또한, 본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 시스템(100)은 상기 온도검출장치(190)로서 상기 헬륨압축기(110) 후단에서 상기 헬륨압축기(110)의 후단 온도(T1)를 측정하기 위한 제 1 온도검출센서(191)와, 상기 압축유저장장치(120)의 압축유저장조(121)내 압축유온도(T2)를 측정하기 위한 제 2 온도검출센서(192)와, 상기 제 1 열교환기(151)로부터 상기 헬륨압축기(110)로 진입되는 상기 헬륨압축기(110) 전단의 헬륨기체 온도(T3)를 측정하기 위한 제 3 온도검출센서(193)와, 상기 오일제거장치(140)를 거쳐 상기 제 1 열교환기(151)로 진입되는 제 1 열교환기 전단의 헬륨기체 온도(T4)를 측정하기 위한 제 4 온도검출센서(194)와, 상기 제 1 열교환기(151)에서 열교환된 기체가 상기 제 1 흡착기(161) 진입되는 제 1 열교환기(151) 후단의 온도(T5)를 측정하는 제 5 온도검출센서(195)와, 상기 팽창장치(165)와 상기 제 2 열교환기(153)를 거쳐서 상기 제 1 열교환기(151)로 진입하는 제 1 열교환기(151) 전단의 온도(T6)를 측정하기 위한 제 6 온도검출센서(196)를 포함한다,In addition, the tritium removal facility helium refrigerator impurity generation suppression and removal system (100) according to one embodiment of the present invention comprises a first temperature detection sensor (191) for measuring the rear temperature (T1) of the helium compressor (110) at the rear end of the helium compressor (110) as the temperature detection device (190), a second temperature detection sensor (192) for measuring the compression oil temperature (T2) in the compression oil storage tank (121) of the compression oil storage device (120), a third temperature detection sensor (193) for measuring the helium gas temperature (T3) of the front end of the helium compressor (110) entering the helium compressor (110) from the first heat exchanger (151), and a first temperature detection sensor (194) for measuring the helium gas temperature (T3) of the front end of the first heat exchanger entering the first heat exchanger (151) via the oil removal device (140). It includes a fourth temperature detection sensor (194) for measuring the helium gas temperature (T4), a fifth temperature detection sensor (195) for measuring the temperature (T5) at the rear end of the first heat exchanger (151) where the gas heat-exchanged in the first heat exchanger (151) enters the first adsorber (161), and a sixth temperature detection sensor (196) for measuring the temperature (T6) at the front end of the first heat exchanger (151) where the gas enters the first heat exchanger (151) through the expansion device (165) and the second heat exchanger (153).

본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제와 제거 시스템(100)은 제어장치(200)로서, 상기 헬륨압축기(110) 후단에서 상기 헬륨압축기(110)의 후단 온도(T1)를 측정하기 위한 제 1 온도검출센서(191)와 신호적으로 접속되어 상기 압축유순환라인(III)의 압축유저장장치(120) 전단에 설치되는 제 1 제어밸브(181)의 개폐량을 제어하여 상기 헬륨압축기(110)에 공급되는 압축유 유량을 제어하는 제 1 제어기(201)를 포함할 수 있다.A helium refrigerator impurity generation suppression and removal system (100) according to one embodiment of the present invention may include a control device (200) that is signal-connected to a first temperature detection sensor (191) for measuring the rear end temperature (T1) of the helium compressor (110) at the rear end of the helium compressor (110) and controls the opening and closing amount of a first control valve (181) installed at the front end of the compressed oil storage device (120) of the compressed oil circulation line (III) to control the compressed oil flow rate supplied to the helium compressor (110).

또한, 상기 제어장치(200)는 상기 헬륨압축기(110) 후단에서 상기 헬륨압축기(110)의 후단 온도(T1)를 측정하기 위한 제 1 온도검출센서(191)와 상기 압축유저장장치(120)의 압축유저장조(121)내 압축유온도(T2)를 측정하기 위한 제 2 온도검출센서(192)와 신호적으로 접속되어 상기 냉각수순환라인(IV)의 냉각장치(130)의 냉각수 공급 계통(130) 후단에서 설치된 제 2 제어밸브(183)의 개폐량을 제어하여 상기 압축유저장장치(120)에 공급되는 냉각수 유량을 제어하는 제 2 제어기(203)를 포함할 수 있다. In addition, the control device (200) may include a second controller (203) that is signal-connected to a first temperature detection sensor (191) for measuring the rear temperature (T1) of the helium compressor (110) at the rear end of the helium compressor (110) and a second temperature detection sensor (192) for measuring the compressed oil temperature (T2) in the compressed oil storage tank (121) of the compressed oil storage device (120) and controls the opening and closing amount of a second control valve (183) installed at the rear end of the cooling water supply system (130) of the cooling device (130) of the cooling water circulation line (IV) to control the flow rate of the coolant supplied to the compressed oil storage device (120).

또한, 상기 제어장치(200)는 열교환장치(150)의 효율을 감시하기 위한 제 3 제어기(205)를 포함하는데, 상기 제 3 제어기(205)는 상기 제 1 열교환기(151)로부터 상기 헬륨압축기(110)로 진입되는 상기 헬륨압축기(110) 전단의 헬륨기체 온도(T3)를 측정하기 위한 제 3 온도검출센서(193)와, 상기 오일제거장치(140)를 거쳐 상기 제 1 열교환기(151)로 진입되는 제 1 열교환기 전단의 헬륨기체 온도(T4)를 측정하기 위한 제 4 온도검출센서(194)와, 상기 제 1 열교환기(151)에서 열교환된 기체가 상기 제 1 흡착기(161) 진입되는 제 1 열교환기(151) 후단의 온도(T5)를 측정하는 제 5 온도검출센서(195)와, 상기 팽창장치(165)와 상기 제 2 열교환기(153)를 거쳐서 상기 제 1 열교환기(151)로 진입하는 제 1 열교환기(151) 전단의 온도(T6)를 측정하기 위한 제 6 온도검출센서(196)와 신호적으로 접속되어 초저온헬륨을 제 1 흡착기(161)로 공급할 수 있는 제 3 제어밸브(185)의 개폐량을 제어하여 팽창터빈(165) 후단으로부터 공급되는 헬륨기체의 양을 제어할 수 있다.In addition, the control device (200) includes a third controller (205) for monitoring the efficiency of the heat exchanger (150), the third controller (205) includes a third temperature detection sensor (193) for measuring the temperature (T3) of helium gas at the front end of the helium compressor (110) entering the helium compressor (110) from the first heat exchanger (151), a fourth temperature detection sensor (194) for measuring the temperature (T4) of helium gas at the front end of the first heat exchanger entering the first heat exchanger (151) through the oil removal device (140), and a fifth temperature detection sensor (194) for measuring the temperature (T5) of the rear end of the first heat exchanger (151) where the gas heat-exchanged in the first heat exchanger (151) enters the first adsorber (161). The temperature detection sensor (195) and the sixth temperature detection sensor (196) for measuring the temperature (T6) of the front end of the first heat exchanger (151) that enters the first heat exchanger (151) through the expansion device (165) and the second heat exchanger (153) are signal-connected to control the opening and closing amount of the third control valve (185) that can supply ultra-low temperature helium to the first adsorber (161), thereby controlling the amount of helium gas supplied from the rear end of the expansion turbine (165).

도 4에 도시된 바와 같이, 본 발명의 일 실시예에 따른 삼중수소제거설비 헬륨냉동기 불순물 생성 억제방법은, 상기 제 1 제어기(201)가 상기 헬륨압축기(110) 후단에 설치된 상기 제 1 온도검출센서(191)로 하여금 상기 헬륨압축기(110)의 후단 온도(T1)를 측정하여(S11) 소정온도 이상(TT)인지를 판단한다(S12).As illustrated in FIG. 4, the method for suppressing the generation of impurities in a helium refrigerator for removing tritium according to one embodiment of the present invention is such that the first controller (201) causes the first temperature detection sensor (191) installed at the rear end of the helium compressor (110) to measure the rear end temperature (T1) of the helium compressor (110) (S11) and determine whether it is above a predetermined temperature (TT) (S12).

상기 제 1 제어기(201)가 상기 헬륨압축기(110)의 후단 온도(T1)가 소정온도 이상(TT)으로 판단하면, 상기 압축유순환라인(III)의 압축유저장장치(120) 후단에 설치되는 제 1 제어밸브(181)의 개폐량을 제어하여 상기 헬륨압축기(110)에 공급되는 압축유 유량을 제어함으로써(S13) 상기 헬륨압축기(110) 후단의 헬륨기체 온도상승을 즉시 억제한다.When the first controller (201) determines that the temperature (T1) at the rear end of the helium compressor (110) is higher than a predetermined temperature (TT), it controls the opening and closing amount of the first control valve (181) installed at the rear end of the compressed oil storage device (120) of the compressed oil circulation line (III) to control the compressed oil flow rate supplied to the helium compressor (110) (S13), thereby immediately suppressing the rise in the temperature of the helium gas at the rear end of the helium compressor (110).

즉, 상기 제 1 제어기(201)가 상기 헬륨압축기(110) 후단 온도(T1)를 상기 제 1 온도검출센서(191)로 검출하고, 상기 제 1 제어밸브(181)로 압축유 유량을 조절하여 상기 헬륨압축기(110) 후단 온도를 제어할 수 있다.That is, the first controller (201) detects the temperature (T1) at the rear end of the helium compressor (110) with the first temperature detection sensor (191) and controls the temperature at the rear end of the helium compressor (110) by controlling the compression oil flow rate with the first control valve (181).

또한, 상기 제 2 제어기(203)는 상기 제 1 제어기(201)와 독립적으로, 상기 헬륨압축기(110) 후단에 설치된 상기 제 1 온도검출센서(191)로부터 상기 헬륨압축기(110)의 후단 온도(T1)를 수신하여 일정기울기 이상의 상승추세에 있는지 판단한다(21)In addition, the second controller (203) independently of the first controller (201) receives the rear temperature (T1) of the helium compressor (110) from the first temperature detection sensor (191) installed at the rear of the helium compressor (110) and determines whether it is in an upward trend of a certain slope or more (21).

이어서, 상기 제 2 제어기(203)는 상기 압축유저장장치(120)의 압축유저장조(121) 내부의 온도(T2)를 상기 제 2 온도검출센서(192)로부터 수신하여(S22) 상기 압축유저장조 내부 온도(T2)가 일정 기울기 이상의 상승추세로 판단되면(S23), 상기 냉각수순환라인(IV)의 냉각수 공급계통(130) 후단에서 설치된 제 2 제어밸브(183)의 개폐량을 제어하여 상기 압축유저장장치(120)에 공급되는 냉각수 유량을 제어한다(S24).Next, the second controller (203) receives the temperature (T2) inside the compressed oil storage tank (121) of the compressed oil storage device (120) from the second temperature detection sensor (192) (S22), and if the temperature (T2) inside the compressed oil storage tank is determined to have an upward trend exceeding a certain slope (S23), it controls the opening/closing amount of the second control valve (183) installed at the rear end of the cooling water supply system (130) of the cooling water circulation line (IV) to control the cooling water flow rate supplied to the compressed oil storage device (120) (S24).

즉, 상기 제 2 제어기(203)는 상기 헬륨압축기(110)의 후단 온도(T1)와 상기 압축유저장조 내부 온도(T2)를 이용하여 냉각수 저장조(131) 전단에서 설치된 제 2 제어밸브(183)의 개폐량을 제어하여 결과적으로 상기 압축유저장장치(120)의 압축유저장조(121)의 열 축적을 방지한다. That is, the second controller (203) controls the opening and closing amount of the second control valve (183) installed in front of the cooling water storage tank (131) by using the rear temperature (T1) of the helium compressor (110) and the internal temperature (T2) of the compressed oil storage tank, thereby preventing heat accumulation in the compressed oil storage tank (121) of the compressed oil storage device (120).

또한, 상기 제 1 제어기(201) 및 상기 제 2 제어기(203)와 독립적으로 상기 제 3 제어기(205)는 상기 제 3 온도검출센서(193)로부터 상기 제 1 열교환기(151)로부터 상기 헬륨압축기(110)로 진입되는 제 1 열교환기(151) 후단의 회수 헬륨기체 온도(T3)를 수신하고(S31), 상기 제 4 온도검출센서(194)로부터 상기 오일제거장치(140)를 거쳐 상기 제 1 열교환기(151)로 진입되는 순행 제 1 열교환기 전단의 헬륨기체 온도(T4)를 수신하고(S32), 상기 제 5 온도검출센서(195)로부터 상기 제 1 열교환기(151)에서 열교환된 헬륨기체가 상기 제 1 흡착기(161)로 진입되는 제 1 열교환기(151) 후단의 순행 헬륨기체 온도(T5)를 수신하고(S33), 상기 제 6 온도검출센서(197)로부터 상기 팽창장치(165)와 상기 제 2 열교환기(153)를 거쳐서 상기 제 1 열교환기(151)로 진입하는 제 1 열교환기(151) 전단의 회수 헬륨기체 온도(T6)를 수신하고(S34), 온도상승율을 감시하여 각각 온도를 조합한 효율식에 의해 소정효율 이하인지 판단하고(S35), 상기 팽창터빈(165) 후단의 제 3 제어밸브(185)의 개폐량을 제어하여(S36) 상기 팽창터빈(165) 후단으로부터 제 1 흡착기(161)로 공급되는 헬륨기체의 양을 제어한다.In addition, independently of the first controller (201) and the second controller (203), the third controller (205) receives the temperature (T3) of the recovered helium gas at the rear end of the first heat exchanger (151) that enters the helium compressor (110) from the first heat exchanger (151) from the third temperature detection sensor (193) (S31), receives the temperature (T4) of the helium gas at the front end of the forward first heat exchanger that enters the first heat exchanger (151) through the oil removal device (140) from the fourth temperature detection sensor (194) (S32), and receives the temperature (T4) of the helium gas at the rear end of the forward first heat exchanger (151) that enters the first adsorber (161) through the fifth temperature detection sensor (195). The helium gas temperature (T5) is received (S33), the recovery helium gas temperature (T6) at the front end of the first heat exchanger (151) that enters the first heat exchanger (151) through the expansion device (165) and the second heat exchanger (153) from the sixth temperature detection sensor (197) is received (S34), the temperature increase rate is monitored to determine whether it is below a predetermined efficiency by an efficiency formula combining each temperature (S35), and the opening/closing amount of the third control valve (185) at the rear end of the expansion turbine (165) is controlled (S36) to control the amount of helium gas supplied to the first adsorber (161) from the rear end of the expansion turbine (165).

상기 제 3 제어기(205)는 제 1 열교환기(151)에 대해 제 3 온도검출센서(193)에 의해 측정된 제 1 열교환기 후단 회수 헬륨기체 온도(T3)와, 제 4 온도검출센서(194)에 의해 측정된 제 1 열교환기 전단 순행 헬륨기체 온도(T4)와, 제 5 온도검출센서(195)에 의해 측정된 제 1 열교환기 후단 순행 헬륨기체 온도(T5)와, 제 6 온도검출센서(196)에 의해 측정된 제 1 열교환기 전단 회수 헬륨기체 온도(T6)로 상기 제 1 열교환기(151)의 효율을 측정하여 상기 제 1 열교환기(151)를 감시하고, 팽창터빈(165) 후단으로부터 제 1 흡착기(161)로 공급되는 헬륨기체의 양을 제어하여, 상기 제 1 열교환기(151)에 흡착되는 수소 이외의 불순물을 제거하여 상기 제 1 열교환기(151)의 성능을 유지할 수 있다. The third controller (205) measures the efficiency of the first heat exchanger (151) by measuring the temperature (T3) of the helium gas recovered at the rear of the first heat exchanger measured by the third temperature detection sensor (193), the temperature (T4) of the helium gas forward of the first heat exchanger measured by the fourth temperature detection sensor (194), the temperature (T5) of the helium gas forward of the first heat exchanger measured by the fifth temperature detection sensor (195), and the temperature (T6) of the helium gas forward of the first heat exchanger measured by the sixth temperature detection sensor (196), thereby monitoring the first heat exchanger (151), and controlling the amount of helium gas supplied to the first adsorber (161) from the rear of the expansion turbine (165), thereby controlling the first The performance of the first heat exchanger (151) can be maintained by removing impurities other than hydrogen adsorbed in the heat exchanger (151).

따라서, 상기 제 3 제어기(205)는 상기 제 1 열교환기(161)의 순행 전후단 온도 및 역행 전후단 온도(T3, T4, T5, T6)로 상기 제 1 열교환기(161)의 효율을 측정할 수 있는 열교환기 효율 감시 제어기가 될 수 있으며, 상기 제 3 제어밸브(185)는 흡착기 유량 형성 밸브(V3)일 수 있다.Accordingly, the third controller (205) may be a heat exchanger efficiency monitoring controller capable of measuring the efficiency of the first heat exchanger (161) with the forward and reverse front and rear temperatures (T3, T4, T5, T6) of the first heat exchanger (161), and the third control valve (185) may be an adsorber flow rate forming valve (V3).

상기 제 1 흡착기(161)와 상기 제 2 흡착기(163)가 직렬로 연결되어 있어 상기 제 1 흡착기(161)에서 액화점이 낮은 수소와 같은 기체를 흡착할 수 있으며 상기 제 2 흡착기(163)에서 액화점이 다소 높은 질소, 탄화수소 등 기타 기체를 흡착하여 상기 팽창터빈(165)을 보호할 수 있으며, 상기 제 1 및 제 2 열교환기(151, 153)의 효율을 유지할 수 있다.The first adsorber (161) and the second adsorber (163) are connected in series, so that gases such as hydrogen having a low liquefaction point can be adsorbed in the first adsorber (161), and gases such as nitrogen and hydrocarbons having a somewhat high liquefaction point can be adsorbed in the second adsorber (163), thereby protecting the expansion turbine (165) and maintaining the efficiency of the first and second heat exchangers (151, 153).

상기 헬륨압축기(110)에서 헬륨기체와 압축유가 함께 압축되면 기체온도가 상승하여, 상기 헬륨압축기(110) 후단 온도가 높아지면 상기 제 1 제어기(201)에 의해 압축유 유량제어 밸브(V1)인 제 1 제어밸브(181)를 제어하여 압축유 유량을 늘려 상기 헬륨압축기(110) 후단 온도 상승을 억제할 수 있다. When helium gas and compressed oil are compressed together in the helium compressor (110), the gas temperature rises, and when the temperature at the rear end of the helium compressor (110) increases, the first control valve (181), which is a compressed oil flow rate control valve (V1), is controlled by the first controller (201) to increase the compressed oil flow rate, thereby suppressing the rise in the temperature at the rear end of the helium compressor (110).

상기 헬륨압축기(110)의 온도가 고온으로 계속 유지되면 상기 헬륨압축기(110) 후단 온도(T1)와 상기 압축유저장장치(120) 내부의 온도(T2)의 상승률에 따라 상기 제 2 제어기(203)가 냉각수 유량제어 밸브(V2)인 제 2 제어밸브(183)로 신호를 보내 냉각수 유량을 증가시켜 상기 압축유저장장치(120)의 압축유저장조(121)의 온도를 조절할 수 있다. When the temperature of the helium compressor (110) is maintained at a high temperature, the second controller (203) sends a signal to the second control valve (183), which is a cooling water flow rate control valve (V2), according to the rate of increase of the temperature (T1) at the rear end of the helium compressor (110) and the temperature (T2) inside the compressed oil storage device (120), thereby increasing the cooling water flow rate and controlling the temperature of the compressed oil storage tank (121) of the compressed oil storage device (120).

온도조절에도 불가하고 생성되거나 외부에서 유입된 탄화수소, 질소, 산소, 수소 등의 기체를 제거하기 위해 상기 제 1 흡착기(161)와 상기 제 2 흡착기(163)가 직렬로 연결되어 있다. The first adsorber (161) and the second adsorber (163) are connected in series to remove gases such as hydrocarbons, nitrogen, oxygen, and hydrogen that are generated or introduced from the outside and cannot be controlled by temperature.

상기 제 1 흡착기(161)는 초저온에 흡착되는 수소와 같은 기체를 제거하며, 상기 제 2 흡착기(163)는 탄화수소, 질소 등 상대적으로 흡착온도가 높은 기체를 제거할 수 있다. The first adsorber (161) above removes gases such as hydrogen that are adsorbed at ultra-low temperatures, and the second adsorber (163) above can remove gases with relatively high adsorption temperatures such as hydrocarbons and nitrogen.

불순물은 상기 제 1 열교환기(151)의 효율에 의해 감시될 수 있으며, 기체분석이 필요하지 않으므로 신속하게 효율을 감시하며 상기 제 1 흡착기(161)의 흡착 유량을 형성하여 열교환 효율을 유지할 수 있다. Impurities can be monitored by the efficiency of the first heat exchanger (151), and since gas analysis is not required, the efficiency can be quickly monitored and the heat exchange efficiency can be maintained by forming the adsorption flow rate of the first adsorber (161).

추가적으로 상기 압축유저장장치(120)는 압축유저장조(121)에 압축유 보충 또는 교환 시 유입되는 산소가 압축유와 접촉되는 것을 줄이기 위해 상기 압축유저장조에 질소를 주입시켜 압축유 산화를 방지하는 질소공급장치(125)를 더 포함할 수 있다.Additionally, the compressed oil storage device (120) may further include a nitrogen supply device (125) that injects nitrogen into the compressed oil storage tank (121) to prevent oxidation of the compressed oil in order to reduce contact between oxygen flowing into the compressed oil storage tank (121) when replenishing or exchanging the compressed oil and the compressed oil.

Claims (7)

헬륨압축기에 헬륨을 공급하는 헬륨기체공급라인;A helium gas supply line that supplies helium to a helium compressor; 상기 헬륨압축기에서 헬륨압축시 필요한 압축유를 순환공급하는 압축유순환라인;A compression oil circulation line that circulates and supplies the compression oil required for helium compression in the above helium compressor; 상기 헬륨기체공급라인을 통해 공급된 헬륨을 상기 압축유순환라인을 통해 공급된 압축유와 함께 상기 헬륨압축기에서 압축 후 회수하여 사용하도록 순환시키는 헬륨순환라인; 및A helium circulation line that circulates the helium supplied through the helium gas supply line together with the compression oil supplied through the compression oil circulation line to be compressed in the helium compressor and then recovered for use; and 상기 헬륨압축기에서 헬륨과 압축유를 같이 압축하는 경우 발생하는 열에 의해 압축유가 고온이 되는 것을 방지하기 위한 압축유저장장치의 냉각수순환라인을 포함하며,It includes a cooling water circulation line of a compressed oil storage device to prevent the compressed oil from becoming high in temperature due to the heat generated when helium and compressed oil are compressed together in the above helium compressor. 상기 헬륨순환라인의 상기 헬륨압축기 후단에서 상기 헬륨압축기의 후단 온도를 측정하기 위한 제 1 온도검출센서와 신호적으로 접속되어 상기 압축유순환라인의 압축유저장장치 전단에 설치되는 제 1 제어밸브의 개폐량을 제어하여 상기 헬륨압축기에 공급되는 압축유 유량을 제어하여 상기 헬륨압축기 후단 온도를 제어하는 제 1 제어기를 포함하는 헬륨냉동기 불순물 생성 억제와 제거 시스템.A helium refrigerator impurity generation suppression and removal system including a first controller that controls the opening and closing amount of a first control valve installed in front of a compressed oil storage device of the compressed oil circulation line by controlling the flow rate of compressed oil supplied to the helium compressor, thereby controlling the temperature at the rear end of the helium compressor, and signal-connected to a first temperature detection sensor for measuring the temperature at the rear end of the helium compressor in the helium circulation line. 제 1 항에 있어서,In the first paragraph, 상기 제 1 제어기와 독립적으로, 상기 제 1 온도검출센서와 상기 압축유저장장치의 압축유 온도를 측정하기 위한 제 2 온도검출센서와 신호적으로 접속되어 상기 냉각수순환라인의 냉각수저장조 전단에 설치된 제 2 제어밸브의 개폐량을 제어하여 상기 압축유저장장치에 공급되는 냉각수 유량을 제어하는 제 2 제어기를 포함하는 헬륨냉동기 불순물 생성 억제와 제거 시스템.A helium refrigerator impurity generation suppression and removal system including a second controller that is independently connected to the first temperature detection sensor and the second temperature detection sensor for measuring the temperature of the compressed oil of the compressed oil storage device and controls the opening and closing amount of a second control valve installed at the front end of the cooling water storage tank of the cooling water circulation line to control the flow rate of the cooling water supplied to the compressed oil storage device. 제 1 항에 있어서,In the first paragraph, 상기 헬륨순환라인에는 상기 헬륨압축기와, 상기 헬륨압축기 후단에 설치되는 오일제거장치와, 상기 오일제거장치를 통과한 고온의 헬륨기체와 열교환하여 상기 헬륨압축기를 냉각시키기 위한 열교환장치와, 상기 열교환장치에 불순물이 부착되는 것을 방지하도록 불순물을 제거하는 흡착장치와, 상기 흡착장치를 통과한 헬륨기체를 팽창 건조시키는 팽창장치를 포함하며, 상기 팽창장치에서 나온 헬륨기체는 다시 상기 열교환장치를 거쳐 상기 헬륨압축기로 순환공급되도록 구성되며,The helium circulation line includes the helium compressor, an oil removal device installed at the rear end of the helium compressor, a heat exchanger for cooling the helium compressor by exchanging heat with high-temperature helium gas passing through the oil removal device, an adsorption device for removing impurities to prevent impurities from adhering to the heat exchanger, and an expansion device for expanding and drying the helium gas passing through the adsorption device, and the helium gas coming out of the expansion device is configured to be circulated and supplied to the helium compressor again through the heat exchanger. 상기 열교환장치는 상기 오일제거장치 후단에 직렬로 배치되는 고온의 제 1 열교환기와 저온의 제 2 열교환기를 포함하며, 상기 흡착장치는 순방향으로 상기 제 1 열교환기 후단에 설치되어 상기 헬륨압축기에서 발생한 탄화수소와 같은 불순물을 1차적으로 제거하는 제 2 흡착기와 상기 제 2 열교환기 후단에 설치되어 보다 저온의 수소와 같은 기체를 2차적으로 제거하는 제 1 흡착기를 직렬로 포함하는 헬륨냉동기 불순물 생성 억제와 제거 시스템.A helium refrigerator impurity generation suppression and removal system, wherein the heat exchanger comprises a high-temperature first heat exchanger and a low-temperature second heat exchanger arranged in series at the rear end of the oil removal device, and the adsorption device comprises a second adsorber installed in the forward direction at the rear end of the first heat exchanger to primarily remove impurities such as hydrocarbons generated in the helium compressor, and a first adsorber installed at the rear end of the second heat exchanger to secondarily remove lower-temperature gases such as hydrogen. 제 3 항에 있어서,In the third paragraph, 상기 제 1 열교환기에 대해 제 3 온도검출센서에 의해 측정된 제 1 열교환기 후단 회수 헬륨기체 온도와, 제 4 온도검출센서에 의해 측정된 제 1 열교환기 전단 순행 헬륨기체 온도와, 제 5 온도검출센서에 의해 측정된 제 1 열교환기 후단 순행 헬륨기체 온도와, 제 6 온도검출센서에 의해 측정된 제 1 열교환기 전단 회수 헬륨기체 온도로 상기 제 1 열교환기의 효율을 측정하여 상기 제 1 열교환기를 감시하고, 상기 헬륨공급라인의 헬륨공급장치 전단의 제 1 제어밸브의 개폐하여 상기 제 1 흡착기로 공급되는 헬륨기체의 양을 제어하여 상기 제 1 열교환기에 흡착되는 수소 이외의 불순물을 제거하는 제 3 제어기를 포함하는 헬륨냉동기 불순물 생성 억제와 제거 시스템.A helium refrigerator impurity generation suppression and removal system, comprising a third controller for monitoring the efficiency of the first heat exchanger by measuring the temperature of the helium gas recovered at the rear end of the first heat exchanger measured by the third temperature detection sensor, the temperature of the helium gas forward of the first heat exchanger measured by the fourth temperature detection sensor, the temperature of the helium gas forward of the first heat exchanger measured by the fifth temperature detection sensor, and the temperature of the helium gas recovered at the front end of the first heat exchanger measured by the sixth temperature detection sensor, and controlling the amount of helium gas supplied to the first adsorber by opening and closing the first control valve at the front end of the helium supply device of the helium supply line to remove impurities other than hydrogen adsorbed in the first heat exchanger. 제 4 항에 있어서,In paragraph 4, 상기 압축유저장장치에 결합된 질소공급장치를 더 포함하는 헬륨냉동기 불순물 생성 억제와 제거 시스템.A helium refrigerator impurity generation suppression and removal system further comprising a nitrogen supply device coupled to the above compressed oil storage device. 제 5 항에 따른 헬륨냉동기 불순물 생성 억제와 제거 시스템의 헬륨냉동기 불순물 억제와 제거방법에 있어서, In the helium refrigerator impurity suppression and removal method of the helium refrigerator impurity suppression and removal system according to Article 5, 제 1 제어기가 헬륨압축기 후단 온도를 제 1 온도검출센서로 검출하고, The first controller detects the temperature at the rear end of the helium compressor using the first temperature detection sensor, 압축유 유량을 조절하여 상기 헬륨압축기 후단 온도를 제어하며,The temperature at the rear end of the helium compressor is controlled by adjusting the compression oil flow rate, 상기 제 1 제어기와 독립적으로 제 2 제어기가 상기 헬륨압축기의 후단 온도와 압축유저장장치 내부 온도를 이용하여 상기 압축유저장장치에 연결된 냉각수 저장조 전단에 설치된 제 2 제어밸브의 개폐량을 제어하여 상기 압축유저장장치의 열축적을 방지하는 헬륨냉동기 불순물 억제와 제거방법.A helium refrigerator impurity suppression and removal method, in which a second controller independently of the first controller controls the opening and closing amount of a second control valve installed in front of a cooling water storage tank connected to the compressed oil storage device using the rear end temperature of the helium compressor and the internal temperature of the compressed oil storage device to prevent heat accumulation in the compressed oil storage device. 제 6 항에 있어서,In paragraph 6, 상기 제 1 제어기 및 상기 제 2 제어기와 독립적으로 제 3 제어기는 제 3 온도검출센서로부터 상기 제 1 열교환기로부터 상기 헬륨압축기로 진입되는 상기 제 1 열교환기 후단의 회수 헬륨기체 온도를 수신하고, Independently of the first controller and the second controller, the third controller receives the temperature of the recovered helium gas at the rear end of the first heat exchanger entering the helium compressor from the first heat exchanger from the third temperature detection sensor, 제 4 온도검출센서로부터 오일제거장치를 거쳐 상기 제 1 열교환기로 진입되는 순행 제 1 열교환기 전단의 헬륨기체 온도를 수신하고, Receive the temperature of helium gas in front of the first heat exchanger that passes through the oil removal device from the fourth temperature detection sensor and enters the first heat exchanger, 제 5 온도검출센서로부터 상기 제 1 열교환기에서 열교환된 헬륨기체가 제 1 흡착기로 진입되는 제 1 열교환기 후단의 순행 헬륨기체 온도를 수신하고, The fifth temperature detection sensor receives the temperature of the helium gas passing through the first heat exchanger and entering the first adsorber, 제 6 온도검출센서로부터 팽창장치와 제 2 열교환기를 거쳐서 상기 제 1 열교환기로 진입하는 상기 제 1 열교환기 전단의 회수 헬륨기체 온도를 수신하고, Receive the temperature of the recovered helium gas in front of the first heat exchanger, which enters the first heat exchanger through the expansion device and the second heat exchanger, from the sixth temperature detection sensor, and 각각 온도를 조합한 효율식에 의해 소정효율 이하이면, 팽창터빈 후단 제 3 제어밸브의 개폐량을 제어하여 상기 제 1 흡착기로 공급되는 헬륨기체의 양을 제어하는 헬륨냉동기 불순물 억제와 제거방법. A helium refrigerator impurity suppression and removal method that controls the amount of helium gas supplied to the first adsorber by controlling the opening and closing amount of the third control valve at the rear end of the expansion turbine when the efficiency is below a predetermined level according to an efficiency formula combining each temperature.
PCT/KR2025/099731 2024-05-02 2025-03-12 System and method for suppressing generation of and removing impurities in helium refrigerator Pending WO2025230394A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020240058716A KR20250159507A (en) 2024-05-02 2024-05-02 method and system for removing impurities of helium gas refrigerator
KR10-2024-0058716 2024-05-02

Publications (1)

Publication Number Publication Date
WO2025230394A1 true WO2025230394A1 (en) 2025-11-06

Family

ID=97561682

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2025/099731 Pending WO2025230394A1 (en) 2024-05-02 2025-03-12 System and method for suppressing generation of and removing impurities in helium refrigerator

Country Status (2)

Country Link
KR (1) KR20250159507A (en)
WO (1) WO2025230394A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05306840A (en) * 1992-04-30 1993-11-19 Sumitomo Heavy Ind Ltd Helium compressor
JP2011137432A (en) * 2009-12-25 2011-07-14 Teratekku:Kk External combustion engine having lubricating oil circuit
US20130125568A1 (en) * 2011-11-17 2013-05-23 Air Products And Chemicals, Inc. Compressor Assemblies and Methods to Minimize Venting of a Process Gas During Startup Operations
KR102108239B1 (en) * 2015-12-18 2020-05-08 스미토모 크라이어제닉스 오브 아메리카 인코포레이티드 Helium compressor with double aftercooler
JP2023167267A (en) * 2022-05-11 2023-11-24 住友重機械工業株式会社 Oil lubrication type compressor for cryogenic refrigerator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05306840A (en) * 1992-04-30 1993-11-19 Sumitomo Heavy Ind Ltd Helium compressor
JP2011137432A (en) * 2009-12-25 2011-07-14 Teratekku:Kk External combustion engine having lubricating oil circuit
US20130125568A1 (en) * 2011-11-17 2013-05-23 Air Products And Chemicals, Inc. Compressor Assemblies and Methods to Minimize Venting of a Process Gas During Startup Operations
KR102108239B1 (en) * 2015-12-18 2020-05-08 스미토모 크라이어제닉스 오브 아메리카 인코포레이티드 Helium compressor with double aftercooler
JP2023167267A (en) * 2022-05-11 2023-11-24 住友重機械工業株式会社 Oil lubrication type compressor for cryogenic refrigerator

Also Published As

Publication number Publication date
KR20250159507A (en) 2025-11-11

Similar Documents

Publication Publication Date Title
CN116364318B (en) Sodium-cooled reactor system
WO2021045455A1 (en) Exhaust pipe apparatus and ship comprising same
WO2019093693A1 (en) Radioactive material reduction facility and nuclear power plant having the same
WO2025230394A1 (en) System and method for suppressing generation of and removing impurities in helium refrigerator
Zhipeng et al. Discussion on the accident behavior and accident management of the HTGR
CN113936830B (en) A method and electronic equipment for controlling the state of a nuclear power plant generator set
WO2014058089A1 (en) Apparatus for replenishing coolant for passive auxiliary feedwater syatem of nuclear power plant
WO2014035009A1 (en) Intrinsically safe water-cooled reactor system for generating electricity
JPH04109197A (en) Reactor core decay heat removing device for pressurized water reactor
WO2013095026A1 (en) Heat recovery unit based on fuel cell and operating method thereof
Birely Operating experience of the peach bottom atomic power station
JPS6275392A (en) Secondary cooling system of fast breeder reactor
WO2025173910A1 (en) Gas separation module for utility scale solid oxide water electrolysis system
CN215988119U (en) Steam generator cooling system used after emergency shutdown of high-temperature gas cooled reactor
WO2025198093A1 (en) System and method for removing residual heat of integrated nuclear reactor
WO2025206466A1 (en) Method for controlling reactivity of boric acid-free reactor
WO2017086563A1 (en) Spent nuclear fuel passive-cooling system using heat pipe
Groudev et al. Application of ASTEC computer code for validation of SAMG based on LB LOCA scenario for VVER 1000
CN120015388B (en) A large sodium-cooled fast reactor power plant
Saraswat et al. Thermal Hydraulics of Loss of Heat Sink Accident of Indian Test Blanket System in ITER
WO2025048448A1 (en) Molten salt reactor and molten salt reactor system
JPS58159Y2 (en) Radioactive gas waste treatment equipment
WO2024195926A1 (en) Small modular reactor including heat pipe-type dual containment vessel
Dalle Donne et al. The Karlsruhe solid breeder blanket and the test module to be irradiated in ITER/NET
CN114909645A (en) Primary side cleaning system and method for high temperature gas cooled reactor steam generator

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 25798282

Country of ref document: EP

Kind code of ref document: A1