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WO2020087918A1 - Système et procédé de régulation et de commande d'alimentation en dioxyde de carbone supercritique - Google Patents

Système et procédé de régulation et de commande d'alimentation en dioxyde de carbone supercritique Download PDF

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Publication number
WO2020087918A1
WO2020087918A1 PCT/CN2019/088288 CN2019088288W WO2020087918A1 WO 2020087918 A1 WO2020087918 A1 WO 2020087918A1 CN 2019088288 W CN2019088288 W CN 2019088288W WO 2020087918 A1 WO2020087918 A1 WO 2020087918A1
Authority
WO
WIPO (PCT)
Prior art keywords
carbon dioxide
supercritical carbon
discharge
feed
pipe
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.)
Ceased
Application number
PCT/CN2019/088288
Other languages
English (en)
Chinese (zh)
Inventor
颜炳姜
李伟秋
莫大卓
王勇
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.)
Conprofe Technology Group Co Ltd
Original Assignee
Conprofe Technology Group 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
Priority claimed from CN201821764934.2U external-priority patent/CN209157862U/zh
Priority claimed from CN201811269672.7A external-priority patent/CN109318044A/zh
Priority claimed from CN201811269667.6A external-priority patent/CN109333144B/zh
Priority claimed from CN201821764849.6U external-priority patent/CN209180558U/zh
Priority claimed from CN201821764846.2U external-priority patent/CN209180579U/zh
Priority claimed from CN201821768461.3U external-priority patent/CN208999835U/zh
Application filed by Conprofe Technology Group Co Ltd filed Critical Conprofe Technology Group Co Ltd
Priority to KR1020217016106A priority Critical patent/KR20210105341A/ko
Publication of WO2020087918A1 publication Critical patent/WO2020087918A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/10—Arrangements for cooling or lubricating tools or work
    • B23Q11/1038—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality
    • B23Q11/1061—Arrangements for cooling or lubricating tools or work using cutting liquids with special characteristics, e.g. flow rate, quality using cutting liquids with specially selected composition or state of aggregation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D3/00—Devices using other cold materials; Devices using cold-storage bodies
    • F25D3/10—Devices using other cold materials; Devices using cold-storage bodies using liquefied gases, e.g. liquid air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0352—Pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/037—Quick connecting means, e.g. couplings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2270/00—Applications
    • F17C2270/05—Applications for industrial use

Definitions

  • the invention relates to the field of metal processing, in particular to a supercritical carbon dioxide supply control system and process.
  • the current commonly used low-temperature cutting technology is mainly: low-temperature cold air (-30 °C) cooling technology, liquid nitrogen (-179 °C) cooling technology, liquid carbon dioxide (-78.5 °C) cooling technology, etc.
  • the liquid carbon dioxide cooling technology uses liquid carbon dioxide with a pressure of 5.0-6.5MPa to be delivered through the pipeline and released at the front end of the nozzle. It can rapidly expand at the nozzle and absorb heat to generate a low temperature of -78.5 °C (theoretical value), which has been successfully applied to the cutting of difficult-to-machine materials cool down.
  • the pressure drop rate of the liquid carbon dioxide inside the pipeline needs to be strictly controlled, and the pipeline needs to be effectively insulated to prevent the liquid carbon dioxide from freezing and blocking the pipe due to the rapid pressure drop inside the pipeline road. Due to the above-mentioned shortcomings of the liquid carbon dioxide cooling technology, the technology has not yet been widely applied.
  • Patent ZL200680022912.2 discloses a metal working lubrication method based on supercritical carbon dioxide, which involves a system composition that incorporates a lubricant in the supercritical carbon dioxide fluid and applies supercritical carbon dioxide during the metal working process.
  • Patent 201710867324.9 discloses a supercritical carbon dioxide centralized liquid supply system, and describes the composition of the centralized liquid supply system and the centralized liquid supply method.
  • supercritical carbon dioxide must always maintain a pressure greater than or equal to 7.4 MPa and a temperature greater than or equal to 31.1 ° C in the delivery pipeline to ensure that the supercritical carbon dioxide fluid rapidly drops to form a low-temperature medium.
  • the purpose of the present invention is to provide a supercritical carbon dioxide supply control system and process with precise flow control and strong delivery stability.
  • a supercritical carbon dioxide supply control system includes a supercritical carbon dioxide generating device and a supercritical carbon dioxide output device.
  • a supercritical carbon dioxide flow regulating device and a supercritical carbon dioxide output device are also provided between the supercritical carbon dioxide generating device and the supercritical carbon dioxide output device Including a discharge pipe for conveying supercritical carbon dioxide fluid.
  • the supercritical carbon dioxide flow adjustment device includes a transfer pipe. The supercritical carbon dioxide flow adjustment device adjusts the flow by switching the transfer pipe. The inner diameter of the transfer pipe is smaller than the inner diameter of the discharge pipe .
  • the supercritical carbon dioxide flow adjustment device includes a feed adapter module and a discharge adapter module, the feed adapter module is connected to a supercritical carbon dioxide generation device, and the output adapter module is connected to a supercritical carbon dioxide output
  • the device, the feed conversion module and the discharge conversion module are all provided with flow channels, and the two ends of the transfer pipeline are respectively connected to the flow channels in the feed conversion module and the discharge conversion module through a detachable connection structure.
  • the feed adapter module and the discharge adapter module are each provided with a card hole, and both ends of the transfer pipe are provided with chucks detachably connected to the card hole.
  • the transfer pipe is For quantitative capillaries, the diameter D of the inner hole of the transfer pipeline ranges from 0.05 to 2 mm.
  • the chuck includes a feed chuck and a discharge chuck.
  • the feed chuck and the discharge chuck are provided with a capillary channel for setting a quantitative capillary, the feed chuck and the discharge chuck
  • the heads are respectively embedded in a card hole.
  • the feed adaptor slot on the feed adaptor module, the feed adaptor slot connects to the flow channel, and also includes a feed seal joint, which has a supercritical connection in the feed seal joint In the supercritical carbon dioxide channel of the carbon dioxide source, one end of the feed sealing joint is embedded in the feed adaptor.
  • the present invention also includes an adapter boss protruding outward from the discharge adapter module, and also includes a discharge sealing joint.
  • the discharge sealing joint has a through hole for connecting to the supercritical carbon dioxide output device.
  • One end of the material sealing joint is provided with a material discharging adapter groove, and the material sealing joint is sleeved on the adapter boss.
  • the discharge pipe is connected to the discharge adapter module, a nozzle is provided at the end of the discharge pipe, and an air pipe sleeved outside the discharge pipe is also included.
  • One end of the air pipe is connected to the nozzle, and the air pipe is connected to A cavity is left between the discharge pipes, and the other end of the air pipe is provided with a gas flow inlet.
  • auxiliary airflow device includes an auxiliary air source.
  • the auxiliary air source is connected to the airflow inlet through a pipeline.
  • a valve and a heating device are also provided between the auxiliary air source and the airflow inlet.
  • one end of the gas pipe is connected to the discharge adapter module, and the discharge adapter module is provided with an airflow adapter connected to the airflow inlet.
  • the invention also provides a supercritical carbon dioxide supply control process, which includes the following steps:
  • a supercritical carbon dioxide flow regulating device is provided between the supercritical carbon dioxide generating device and the supercritical carbon dioxide output device, and the transit line in the supercritical carbon dioxide flow regulating device is replaced to meet the output demand by replacing it;
  • Supercritical carbon dioxide is generated by the supercritical carbon dioxide generating device, and the supercritical carbon dioxide passes through the supercritical carbon dioxide flow regulating device and flows into the output pipeline of the supercritical carbon dioxide output device;
  • a gas pipe is installed on the output pipe of the supercritical carbon dioxide output device, and the heated auxiliary gas is continuously injected into the gas pipe.
  • the auxiliary gas before the auxiliary gas enters the trachea, the auxiliary gas is heated by the heating device.
  • the temperature of the auxiliary gas is greater than or equal to 31 ° C.
  • the auxiliary gas includes compressed air, nitrogen, carbon dioxide, and argon.
  • step 3 the supercritical carbon dioxide and the auxiliary gas stream are simultaneously sprayed through the nozzle.
  • the supercritical carbon dioxide flow adjustment device switches the transfer pipeline to meet the flow processing requirements of supercritical carbon dioxide, and by changing the transfer pipeline
  • the inner diameter value or length value can realize the supercritical carbon dioxide flow adjustment of the system, which not only has stable output, but also has low cost and easy maintenance.
  • FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a supercritical carbon dioxide output device and a supercritical carbon dioxide flow adjustment device according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a supercritical carbon dioxide flow adjustment device according to an embodiment of the present invention.
  • FIG. 4 is an explosion schematic diagram of a supercritical carbon dioxide output device and a supercritical carbon dioxide flow adjustment device according to an embodiment of the present invention.
  • the present invention is a supercritical carbon dioxide supply control system, including a supercritical carbon dioxide generating device 1 and a supercritical carbon dioxide output device 2, the supercritical carbon dioxide generating device 1 and the supercritical carbon dioxide output device 2
  • a supercritical carbon dioxide flow adjustment device 3 is provided.
  • the supercritical carbon dioxide output device 2 includes a discharge pipe 21 for conveying supercritical carbon dioxide fluid.
  • the supercritical carbon dioxide flow adjustment device 3 includes a relay line 31 and a supercritical carbon dioxide flow adjustment device 3 By switching the transfer pipe 31 to adjust the flow rate, the inner diameter of the transfer pipe 31 is smaller than the inner diameter of the discharge pipe 21.
  • the supercritical carbon dioxide generating device 1 is used to convert low-pressure carbon dioxide into a supercritical carbon dioxide fluid, which mainly includes a carbon dioxide source 11, a pressurizing device 12, a storage container 13, a heater 14, a delivery pipeline, and is provided on the delivery pipeline On-off valves, etc.
  • the supercharging device 12 is used for supercharging low-pressure carbon dioxide.
  • the upper limit of carbon dioxide pressure increase is set at 7.4 ⁇ 30MPa, and the upper limit of pressure increase can be adjusted according to the actual cutting application requirements.
  • the heater 14 is used for heating the pressurized carbon dioxide.
  • the upper limit of the heating temperature of the heater is set at 31-100 °C, and the upper limit of the heating temperature is adjustable according to the actual cutting application requirements.
  • the supercritical carbon dioxide flow adjustment device 3 further includes a feed adapter module 32 and a discharge adapter module 33, the feed adapter module 32 is connected to the supercritical carbon dioxide generating device 1, and the feed adapter module 32 is specifically connected to the conveying pipeline of the supercritical carbon dioxide generating device 1, and the feed transition module 32 and the exit transition module 33 are provided with flow channels for conducting supercritical carbon dioxide, and the two ends of the flow channel are respectively
  • a detachable connection structure for connecting other components is provided, and the connection structure may be a screw thread.
  • the transfer tube 31 is a quantitative capillary, and the quantitative capillary has the function of holding pressure.
  • the value of the inner diameter D of the transfer tube 31 ranges from 0.05 to 2mm.
  • the quantitative capillary is realized, and the adjustable range of supercritical carbon dioxide flow is: 0.1 ⁇ 20kg / h.
  • the inner diameter of the transfer pipe 31 is agreed to be 0.05 to 2 mm, and the viscosity of carbon dioxide in the liquid state is approximately equal to 0.0127.
  • the Reynolds number is small at this time, and the effect of viscous force on the flow field is greater than inertia.
  • the disturbance of the flow velocity in the flow field will be attenuated by the viscous force, and the fluid flow is stable, which is laminar.
  • the laminar flow will produce greater internal friction in the flow, resulting in energy loss, thereby reducing the fluid flow rate.
  • supercritical carbon dioxide flow rate control can be achieved, and then supercritical carbon dioxide output flow control can be achieved by controlling the flow rate.
  • the feed adapter module 32 and the feed adapter module 33 are each provided with a card hole, the card holes are connected to their respective flow channels, and the two ends of the transfer pipeline 31 are provided with card holes Removably connected chuck.
  • the chuck includes a feed chuck 311 and a discharge chuck 312. Both the feed chuck 311 and the discharge chuck 312 are provided with capillary channels for setting capillaries, and the feed chuck 311 The discharge chuck 312 and the discharge chuck 312 are respectively embedded in a card hole.
  • the cross-sectional shape of the feed chuck 311 and the discharge chuck 312 is a superposition of a rectangle and a round table. The small end of the round table is facing the inside of the card hole, which is convenient Alignment of capillaries.
  • the feed chuck 311 and the discharge chuck 312 mainly play a role of sealing the transfer part, and the feed chuck 311 and the discharge chuck 312 can be directly embedded in the card hole, and the interference or transition with the card hole Cooperate, so as to realize the insertion and extraction of the feed chuck 311 and the discharge chuck 312, or the feed chuck 311 and the discharge chuck 312 and the card hole are provided with mutually matching threads, so as to realize a detachable connection to achieve
  • the switching of quantitative capillaries of different specifications and increasing the length of the quantitative capillaries can increase the contact area of the wall of the fluid and the quantitative capillaries, thereby reducing the kinetic energy of the fluid and reducing the flow rate.
  • the feed adapter module 32 is provided with a feed adapter groove 321, which is connected to the flow channel, and further includes a feed seal joint 322.
  • a feed adapter groove 321 which is connected to the flow channel, and further includes a feed seal joint 322.
  • one end of the feed sealing joint 322 is embedded in the feed adaptor 321.
  • the feed seal joint 322 can be deeply embedded in the feed adapter module 32, thereby enhancing the mutual tightness of the cooperation, improving the sealing performance, and avoiding Supercritical carbon dioxide fluid leaks.
  • the discharge adapter module 33 is provided with an outwardly protruding adapter boss 332, and further includes a discharge seal joint 331.
  • a discharge adapting groove 333 Through the hole, one end of the discharge sealing joint 331 is provided with a discharge adapting groove 333, and the discharge sealing joint 331 is sleeved on the adapting boss 332.
  • the adapter boss 332 can be deeply embedded in the outlet adapter module 33, thereby enhancing the mutual cooperation tightness, improving the sealing, and avoiding Leakage of supercritical carbon dioxide fluid and auxiliary gas.
  • the supercritical carbon dioxide output device 2 includes a discharge tube 21 connected to the discharge adapter module 33, the discharge tube 21 is a capillary tube, and the inner diameter of the discharge tube 21 ranges from 0.05 to 2mm, compared with the conventional pressure-resistant refrigerant tube or steel pipe, the capillary tube can effectively control the pressure drop rate when supercritical carbon dioxide is output.
  • the end of the discharge pipe 21 is provided with a nozzle 22.
  • the nozzle 22 adopts a multi-channel structure, which can not only allow the passage of supercritical carbon dioxide fluid, but also connect a small amount of lubricating oil and auxiliary gas.
  • It also includes an air pipe 41 sleeved outside the discharge pipe 21, one end of the gas pipe 41 is connected to the nozzle 22, a cavity is left between the air pipe 41 and the discharge pipe 21, and the other end of the air pipe 41 is provided with a gas flow inlet.
  • the auxiliary gas can be introduced into the gas flow inlet.
  • the auxiliary gas is pre-heated and has a certain temperature.
  • the auxiliary gas enters the gas pipe 41 and wraps the discharge pipe 21.
  • the purpose is to prevent the supercritical carbon dioxide in the discharge pipe 21 from being transferred. There is a loss of intermediate heat to avoid the change of supercritical carbon dioxide from supercritical state to other phase states.
  • the auxiliary gas ensures that the high-pressure carbon dioxide in the supercritical carbon dioxide output line is always at or near the temperature range required by the supercritical state before the high-pressure carbon dioxide is ejected through the special nozzle 22, ensuring the supercritical carbon dioxide fluid properties and supercritical carbon dioxide performance Play.
  • the auxiliary airflow device 4 includes an auxiliary air source 42, the auxiliary air source 42 is connected to the airflow inlet through a pipeline, and a valve 43 is further provided between the auxiliary airsource 42 and the airflow inlet And the heating device 44, the heating device 44 is used to heat the auxiliary gas.
  • a filtering device is also provided between the auxiliary air source 42 and the airflow inlet.
  • one end of the air pipe 41 is connected to the discharge adapter module 33, and the discharge adapter module 33 is provided with an airflow conversion interface that communicates with the airflow inlet, and one end of the airflow conversion interface is connected to the airflow inlet.
  • One end is connected to the air outlet pipe 41 of the auxiliary airflow device 4 to realize the transfer of the auxiliary airflow.
  • the present invention is also provided with a control device 5, the control device 5 and the supercritical carbon dioxide generating device 1, the supercritical carbon dioxide output device 2, the auxiliary gas flow device 4 are electrically connected, the control device 5 is used to control the heater, heating device And the solenoid valve in the pipeline, etc., the control device 5 can also monitor the status of supercritical carbon dioxide at various locations in real time, such as pressure and temperature.
  • the invention also provides a supercritical carbon dioxide supply control process, which includes the following steps:
  • a supercritical carbon dioxide flow regulating device 3 is provided between the supercritical carbon dioxide generating device 1 and the supercritical carbon dioxide output device 2.
  • Supercritical carbon dioxide is generated by the supercritical carbon dioxide generating device 1, and the supercritical carbon dioxide passes through the supercritical carbon dioxide flow regulating device 3 and flows into the discharge pipe 21 of the supercritical carbon dioxide output device 2;
  • the discharge pipe 21 of the supercritical carbon dioxide output device 2 is provided with a gas pipe 41, and the heated auxiliary gas is continuously injected into the gas pipe 41.
  • the transfer pipe 31 is switched by the supercritical carbon dioxide flow adjustment device 3 to meet the flow processing requirements of the supercritical carbon dioxide, mainly by switching the length of the transfer pipe 31 to change its flow rate, and at the same time through the auxiliary
  • the gas is wrapped outside the discharge pipe 21 of supercritical carbon dioxide, which plays the role of temperature compensation, and maintains the temperature value of supercritical carbon dioxide always at or near the temperature range required by the supercritical state, ensuring the stability of the temperature of the supercritical carbon dioxide fluid properties Supercritical carbon dioxide performance.
  • the auxiliary gas before the auxiliary gas enters the gas pipe 41, the auxiliary gas is heated by a heating device.
  • the temperature of the auxiliary gas is greater than or equal to 31 ° C.
  • the auxiliary gas includes but is not limited to compressed air, nitrogen, carbon dioxide, and argon. In general, inert gas can be used.
  • step 3 the supercritical carbon dioxide and the auxiliary gas flow are simultaneously ejected through the nozzle 22, and the auxiliary gas is finally ejected outward at the nozzle 22, which can prevent the supercritical carbon dioxide from being injected during The nozzle 22 freezes, which in turn blocks the nozzle 22.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

La présente invention concerne un système de régulation et de commande d'alimentation en dioxyde de carbone supercritique et un procédé de régulation et de commande d'alimentation en dioxyde de carbone supercritique. Le système comprend un appareil de génération de dioxyde de carbone supercritique (1) et un appareil de sortie de dioxyde de carbone supercritique (2), un appareil de régulation de flux de dioxyde de carbone supercritique (3) étant également disposé entre l'appareil de génération de dioxyde de carbone supercritique (1) et l'appareil de sortie de dioxyde de carbone supercritique (2) ; l'appareil de sortie de dioxyde de carbone supercritique (2) comprenant un tuyau de d'évacuation (21) ; et l'appareil de régulation de flux de dioxyde de carbone supercritique (3) comprenant une conduite de transport (31), l'appareil de régulation de flux de dioxyde de carbone supercritique (3) régulant le flux au moyen de la commutation de la conduite de transport (31), et un diamètre interne de la conduite de transport (31) étant inférieur à celui du tuyau d'évacuation (21). Avant que le dioxyde de carbone supercritique ne soit transporté, une régulation de flux de dioxyde de carbone supercritique du système peut être réalisée au moyen de la commutation de la conduite de transport (31), de telle sorte que cette dernière satisfait aux exigences de traitement de flux pour le dioxyde de carbone supercritique, et par le changement des valeurs du diamètre interne et de la longueur de la conduite de transport (31). La présente invention présente non seulement une capacité de sortie stable, mais présente également de faibles coûts et une maintenance aisée, et peut être appliquée au domaine du traitement des métaux.
PCT/CN2019/088288 2018-10-29 2019-05-24 Système et procédé de régulation et de commande d'alimentation en dioxyde de carbone supercritique Ceased WO2020087918A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020217016106A KR20210105341A (ko) 2018-10-29 2019-05-24 초임계 이산화탄소의 공급 조절 시스템 및 공정

Applications Claiming Priority (12)

Application Number Priority Date Filing Date Title
CN201821764934.2U CN209157862U (zh) 2018-10-29 2018-10-29 一种超临界二氧化碳供给调控系统
CN201811269672.7A CN109318044A (zh) 2018-10-29 2018-10-29 一种超临界二氧化碳供给调控系统
CN201811269667.6 2018-10-29
CN201811269667.6A CN109333144B (zh) 2018-10-29 2018-10-29 一种超临界二氧化碳的传输工艺
CN201821764846.2 2018-10-29
CN201821764849.6U CN209180558U (zh) 2018-10-29 2018-10-29 一种用于辅助超临界二氧化碳传输的气流系统
CN201821764846.2U CN209180579U (zh) 2018-10-29 2018-10-29 一种毛细管转接块
CN201821764849.6 2018-10-29
CN201821768461.3 2018-10-29
CN201811269672.7 2018-10-29
CN201821768461.3U CN208999835U (zh) 2018-10-29 2018-10-29 一种超临界二氧化碳流量调节系统
CN201821764934.2 2018-10-29

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WO2020087918A1 true WO2020087918A1 (fr) 2020-05-07

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PCT/CN2019/088288 Ceased WO2020087918A1 (fr) 2018-10-29 2019-05-24 Système et procédé de régulation et de commande d'alimentation en dioxyde de carbone supercritique

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WO (1) WO2020087918A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115990783A (zh) * 2022-12-07 2023-04-21 沈阳理工大学 一种薄壁件低温加工系统
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CN119617309A (zh) * 2023-09-12 2025-03-14 中国石油管道局工程有限公司 超临界co2输送管道投产过程升压路径调控的装置及方法

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