CN113035395A - Containment built-in efficient heat exchanger adopting self-flowing air blowing system - Google Patents
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- CN113035395A CN113035395A CN202110246363.3A CN202110246363A CN113035395A CN 113035395 A CN113035395 A CN 113035395A CN 202110246363 A CN202110246363 A CN 202110246363A CN 113035395 A CN113035395 A CN 113035395A
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- 238000007664 blowing Methods 0.000 title claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 127
- 238000005381 potential energy Methods 0.000 claims abstract description 11
- 230000005484 gravity Effects 0.000 claims description 9
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 230000005494 condensation Effects 0.000 description 10
- 238000009833 condensation Methods 0.000 description 10
- 238000000596 photon cross correlation spectroscopy Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/02—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices
- G21C15/14—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from headers; from joints in ducts
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/24—Promoting flow of the coolant
- G21C15/253—Promoting flow of the coolant for gases, e.g. blowers
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/24—Promoting flow of the coolant
- G21C15/26—Promoting flow of the coolant by convection, e.g. using chimneys, using divergent channels
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
本发明提供一种采用自流式吹气系统的安全壳内置高效换热器，其主要由换热器入口联箱、换热管、换热器出口联箱以及自流式吹气系统组成。所述的自流式吹气系统包括输水结构、水斗式水轮、吹气结构、排水管以及齿轮转向箱。自流式吹气系统可将蒸汽冷凝的水流势能转化为射流动能，带动吹气叶轮转动，从而吹走换热管附近的不凝性气体膜，使得蒸汽更好的在换热管外表面冷凝换热。本发明在安全壳内发生破口事故时可高效的带走安全壳内部热量，其利用自流式吹气系统可有效减薄不凝性气体膜，增强蒸汽与管束的接触，实现高效传热，确保事故条件下安全壳内部可高效的降温降压，增强安全壳的安全性并为降低安全壳的建造成本提供可行方案。
The invention provides a high-efficiency heat exchanger built into a containment using an artesian air blowing system, which is mainly composed of a heat exchanger inlet header, a heat exchange tube, a heat exchanger outlet header and an artesian air blowing system. The self-flow air blowing system includes a water conveying structure, a water bucket water wheel, an air blowing structure, a drain pipe and a gear steering box. The self-flow air blowing system can convert the water flow potential energy condensed by the steam into jet kinetic energy, and drive the air blowing impeller to rotate, thereby blowing away the non-condensable gas film near the heat exchange tube, so that the steam condenses on the outer surface of the heat exchange tube better. heat exchange. The invention can efficiently take away the heat inside the containment when a breach accident occurs in the containment, and the self-flow air blowing system can effectively thin the non-condensable gas film, enhance the contact between the steam and the tube bundle, and realize high-efficiency heat transfer. It can ensure efficient cooling and pressure reduction inside the containment under accident conditions, enhance the safety of the containment and provide a feasible solution for reducing the construction cost of the containment.
Description
Technical Field
The invention relates to a passive containment cooling system efficient heat exchange device, in particular to a containment built-in efficient heat exchanger adopting a self-flow blowing system.
Background
The 21 st century is an important stage of human development and is also a stage of conventional energy shortage, and nuclear energy is always concerned by people since the discovery of the characteristics of cleanness and high efficiency. With the continuous development and maturity of nuclear energy technology, nuclear energy gradually becomes a new main energy source, and the characteristics of large energy density, cleanness and high efficiency make the application more and more extensive.
The nuclear energy brings clean and efficient energy to human beings and brings a plurality of risks. With the development of nuclear power technology, the safety problem of nuclear power plants is more and more emphasized. Therefore, in order to relieve serious consequences of accidents and effectively guarantee the safety of a nuclear power plant, a passive containment cooling system is introduced into the third generation nuclear power technology.
The passive containment cooling system generally comprises a containment built-in heat exchanger, a containment external heat exchange water tank, and pipelines and valves for connecting the heat exchange water tank and the heat exchanger. When an accident occurs to the reactor, a large amount of high-temperature steam can be sprayed in the containment vessel and can contact with a heat exchange pipe of the built-in heat exchanger for condensation and heat exchange, so that cooling water of the upper pipe section can continuously absorb heat, the temperature is increased, natural circulation is formed between the heat exchanger and the heat exchange water tank due to the density difference of the upper pipe section and the lower pipe section, heat in the containment vessel is continuously led out, the containment vessel is prevented from being over-heated and over-pressurized, and the integrity of the containment vessel is ensured.
In case of an accident, in order to prevent the problem that a large amount of heat in the containment cannot be led out in time, a heat exchange enhancement measure of the passive containment heat exchanger needs to be considered. In the existing patents, the patents with publication numbers CN108122622A and CN106782698A provide a novel passive external heat exchange water tank structure of a containment, so that the heat exchange water tank has long-term and efficient operation capability. Patents with publication numbers CN202614053U, CN108206064A, and CN206907494U provide novel passive heat exchange system structures, respectively, which is beneficial to system integration and space saving. The patents are characterized in that other equipment except the built-in heat exchanger in the PCCS is mainly concerned, the natural circulation capacity and the long-term operation capacity of the PCCS are improved through modification, but the key point for improving the heat exchange capacity of the PCCS is the improvement of the heat exchange capacity of the built-in heat exchanger in the containment.
In the development process of accidents, the PCCS operates for a long time to gradually lead out heat in the containment, during the operation of the PCCS, steam can be greatly condensed on the surface of the heat exchanger arranged in the containment, and simultaneously, a large amount of non-condensable gas is collected on the outer surface of the heat exchanger arranged in the containment, so that a gas film can be formed on the outer surface of each heat exchange tube to inhibit the condensation and heat transfer of the steam.
Therefore, it is necessary to invent a containment built-in efficient heat exchanger adopting a self-flowing blowing system to enhance the condensation capacity of the containment built-in heat exchanger, efficiently take away heat in a containment, ensure that the interior of the containment can be efficiently cooled and depressurized under an accident condition, and enhance the safety of the containment.
Disclosure of Invention
The invention aims to provide a built-in high-efficiency heat exchanger of a containment vessel, which adopts a self-flowing blowing system, so as to realize the efficient conduction of heat in the containment vessel, ensure the structural integrity of the containment vessel and provide a feasible scheme for reducing the construction cost of the containment vessel.
The purpose of the invention is realized as follows: the heat exchanger with the built-in containment comprises a heat exchanger inlet header, a heat exchanger outlet header, a heat exchange tube bundle, an upper tube section and a lower tube section, wherein the upper tube section and the lower tube section are used for connecting the heat exchanger and a heat exchange water tank with the built-out containment, the heat exchange tube bundle is respectively communicated with the heat exchanger inlet header and the heat exchanger outlet header, the heat exchange tube bundle further comprises a self-flowing air blowing system, the self-flowing air blowing system is connected with the inner wall surface of the containment through a support column, the self-flowing air blowing system comprises a water delivery structure, a water bucket type water wheel, an air blowing structure and a drain pipe, the water delivery structure comprises a hopper and a hopper water delivery pipe which are mutually connected, the water bucket type water wheel comprises a rotary table arranged in the hopper water delivery pipe through a main shaft and water buckets uniformly arranged on the rotary table, the air blowing, one end of the drain pipe is communicated with the end part of the funnel water pipe, and the other end of the drain pipe extends to the side wall surface of the pile pit.
The invention also includes such structural features:
1. an inlet header and an outlet header of the heat exchanger arranged in the containment adopt annular headers.
2. The heat exchange tubes are preferably straight tube light tubes or spiral light tubes, are uniformly arranged in an annular mode, and are respectively communicated with the inlet header of the containment built-in heat exchanger and the outlet header of the containment built-in heat exchanger.
3. The gear steering box is of a meshing gear structure for realizing motion steering.
4. When a large amount of steam is condensed on the heat exchanger arranged in the containment, a large amount of condensed water is generated and flows downwards along the gravity direction on the heat exchanger arranged in the containment, condensed water is collected by a funnel in the water delivery structure and continuously flows downwards through the funnel water delivery pipe, and when the condensed water reaches the water bucket type water wheel, the water bucket type water wheel starts to rotate anticlockwise and quickly due to the water flow potential energy of the water bucket type water wheel, the rotating force of the water bucket type water wheel is transmitted to the blowing impeller through the main shaft and the gear steering box, so that the blowing impeller rotates quickly, a non-condensable gas film near the heat exchange pipe is blown away, the contact between the steam and the pipe bundle.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention introduces a self-flowing blowing system into the heat exchanger arranged in the containment. The non-condensable gas film around the heat exchange tube is blown away by utilizing the kinetic energy converted from the water flow potential energy generated after the steam is condensed, so that the gas film thickness of the tube bundle in the axial direction can be effectively reduced, the contact between the steam and the heat exchange tube is enhanced, and the condensation heat exchange capability of the heat exchanger arranged in the containment vessel is enhanced.
2) The self-flowing air blowing system adopted by the invention is passive equipment, and energy conversion is carried out by depending on the gravitational potential energy of a large amount of steam condensed near the built-in heat exchanger of the containment vessel, so that kinetic energy is finally provided for the air blowing equipment.
3) According to the invention, the spiral light tube is introduced into the heat exchanger arranged in the containment, and the special spiral structure of the spiral light tube enables water in the heat exchange tube to generate secondary flow, so that the convection heat exchange in the tube is enhanced, the deposition of external non-condensable gas on the outer surface of the tube is inhibited, and the condensation heat exchange capability of the containment passive heat exchanger is enhanced.
4) When a serious accident occurs to the reactor, the invention can efficiently take away the heat in the containment vessel, ensure the rapid temperature reduction and depressurization in the containment vessel, maintain the pressure and the temperature in the containment vessel within the safety limit value, and ensure the integrity of the containment vessel structure without reducing the construction cost of the containment vessel.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a free-flowing insufflation system;
FIG. 3 is a schematic view of a blow configuration;
FIG. 4a is a front view and FIG. 4b is a top view of a straight tube bundle heat exchanger;
fig. 5a is a front view and fig. 5b is a top view of a tube-bundle heat exchanger.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
With reference to fig. 1-5, the present invention provides a containment built-in high efficiency heat exchanger using a gravity flow blowing system. The heat exchanger mainly comprises a built-in containment heat exchanger 1, a heat exchanger outlet header 2, a heat exchanger inlet header 3, an upper pipe section 4, a lower pipe section 5, a water conveying structure 6, a gear steering box 7, a blowing structure 8, a support column 9, a containment inner wall surface 10, a drain pipe 11 and a containment air space 12.
The invention relates to a containment built-in efficient heat exchanger adopting a self-flowing blowing system. The tube bundle of the heat exchanger arranged in the containment is preferably a straight tube light pipe or a spiral light pipe. The lower part of the tube bundle of the heat exchanger arranged in the containment is provided with a self-flowing blowing system. One end of the upper pipe section is communicated with an inlet at the bottom of the external heat exchange water tank of the containment, and the other end of the upper pipe section extends into the containment and is communicated with an outlet header of the heat exchanger; one end of the lower pipe section is communicated with an outlet at the bottom of the external heat exchange water tank of the containment, and the other end of the lower pipe section extends into the containment and is communicated with an inlet header of the heat exchanger;
the inlet header and the outlet header of the heat exchanger arranged in the containment adopt annular headers, the inlet header of the heat exchanger is arranged as an inlet of the heat exchanger arranged in the containment, and the outlet header of the heat exchanger is arranged as an outlet of the heat exchanger arranged in the containment;
the heat exchange tubes are preferably straight tube light tubes or spiral light tubes, a plurality of heat exchange tubes are preferably uniformly arranged in an annular manner, and the heat exchange tubes are respectively communicated with the inlet header of the containment built-in heat exchanger and the outlet header of the containment built-in heat exchanger;
the self-flowing air blowing system comprises a water delivery structure, a water bucket type water wheel, an air blowing structure, a drain pipe and a gear steering box, wherein the water bucket type water wheel is arranged in the water delivery pipe and is connected with the air blowing structure, and the self-flowing air blowing system is connected with the inner wall surface of the containment through a support column;
the water delivery structure comprises a funnel and a funnel water delivery pipe; the air blowing structure comprises a main shaft, a gear steering box and an air blowing impeller; the water bucket type water wheel comprises a wheel disc and a water bucket and is used for converting water flow potential energy into kinetic energy; the main shafts of the water bucket type water wheel and the blowing impeller are transmitted through a gear steering box, and the blowing impeller is preferably arranged near the middle lower part of the built-in heat exchanger of the containment;
the outlet of the drain pipe is arranged near the side wall surface of the pile pit;
one end of the upper pipe section extends into the containment through a penetrating piece and is communicated with an outlet header of the built-in heat exchanger of the containment, and the other end of the upper pipe section is communicated with an inlet at the bottom of the heat exchange water tank;
one end of the lower pipe section extends into the interior of the containment through a penetrating piece and is communicated with an inlet header of the built-in heat exchanger of the containment, and the other end of the lower pipe section is communicated with an outlet at the bottom of the heat exchange water tank.
The invention is mainly applied to the rupture accident of the primary loop or the main steam pipeline when the reactor runs. During a reactor accident, a large amount of high-temperature and high-pressure steam is blown out from the containment gas space 12, and the pressure and the temperature in the containment vessel continuously rise. In the initial stage of blowing, the temperature and pressure rise generated by steam are mainly absorbed by the inner wall surface 10 of the containment vessel, a reactor pit and other internal components of the containment vessel; in the later stage of blowing, the heat in the containment is mainly led out by the heat exchanger 1 arranged in the containment.
During a reactor accident, the large volume of high temperature, high pressure gas released at the breach has a low density and some initial kinetic energy, causing the gas to flow up the gas stream in the containment. When steam contacts the heat exchanger 1 arranged in the containment, a large amount of steam can be condensed, meanwhile, a large amount of non-condensable gas is collected on the outer surface of each heat exchange tube, and therefore a gas film is formed on the outer surface of each heat exchange tube to inhibit the condensation and heat transfer of the steam. In order to reduce the inhibition effect of the air film and promote the condensation heat exchange of steam, a self-flowing air blowing system is designed, and comprises three parts: a water delivery structure (as shown in figure 2), a water bucket type water wheel (as shown in figure 2) and a blowing structure (as shown in figure 3). The gravity flow type air blowing system can convert the water flow potential energy of steam condensation into air blowing kinetic energy, so that non-condensable gas films near the heat exchange tubes are blown away, and steam is better condensed and exchanges heat on the outer surfaces of the heat exchange tubes. Through the designed self-flowing blowing system, steam is efficiently condensed and exchanges heat among the heat exchangers 1 arranged in the containment vessel, and the outer wall surfaces of the heat exchangers 1 arranged in the containment vessel are washed. After the heat exchanger 1 arranged in the containment and the upper pipe section 4 are heated, the temperature of cooling water in the heat exchange pipe rises, the density drops, and a driving force is formed between the upper pipe section 4 and the lower pipe section 5 due to density difference, so that natural circulation is formed between the heat exchanger 1 arranged in the containment and the heat exchange water tank arranged outside the containment, and heat in the containment is continuously taken away.
The self-flowing air blowing system comprises a water conveying structure 6, a water bucket type water wheel 15, an air blowing structure 8 and a drain pipe 11. The pelton type water wheel 15 is arranged in the water delivery structure 6 and connected with the blowing structure 8, and the self-flowing blowing system is connected with the inner wall surface 10 of the containment through a support column 9.
The water delivery structure 6 comprises a funnel 13 and a funnel water delivery pipe 14, and is used for collecting water flowing down from the built-in containment heat exchanger 1 after steam is condensed; the water bucket type water wheel 15 comprises a wheel disc and a water bucket 16 and has the function of converting water flow potential energy into jet flow kinetic energy; the air blowing structure 8 comprises a main shaft 17, a gear steering box 7 and an air blowing impeller 18; the pelton wheel 15 is connected with the blowing impeller 18 through the main shaft 17 and the gear steering box 7, the pelton wheel 15 is set as a driving wheel, and the blowing impeller 18 is set as a driven wheel.
After a large amount of steam is condensed on the built-in heat exchanger 1 of the containment, a large amount of condensed water is generated, and therefore the condensed water flows downwards on the built-in heat exchanger 1 of the containment along the gravity direction, at the moment, the condensed water is collected by a funnel 13 in the water conveying structure 6 and continues to flow downwards through a funnel water conveying pipe 14, and when the condensed water reaches the bucket type water wheel 15, the bucket type water wheel 15 starts to rotate anticlockwise and quickly due to the water flow potential energy of the condensed water, the rotating force of the condensed water is transmitted to the blowing impeller 18 through the main shaft 17 and the gear steering box 7, so that the blowing impeller 18 rotates quickly, non-condensable gas films near the heat exchange tubes are blown away, the contact between the steam and the tube bundles is enhanced. The water after hitting the water bucket 16 is discharged into a pile pit through the drain pipe 11 for storage.
Regarding the inlet header 3 and the outlet header 2 of the heat exchanger, considering that most high-temperature and high-pressure steam in the containment gas space 12 can scour the containment built-in heat exchanger 1 from top to bottom, in order to avoid the header structure from hindering the flow of the steam, the header structure is designed into an annular header (as shown in fig. 4-5b), so that the steam can scour the containment built-in heat exchanger 1 better.
The heat exchange tube of the in-containment heat exchanger 1 preferably adopts a straight tube light pipe 23 (shown in figure 4) or a spiral light pipe 24 (shown in figures 5 a-b). The heat exchange tubes are provided with a plurality of heat exchange tubes, preferably in an annular uniform arrangement (as shown in figures 4-5b), and the heat exchange tubes are respectively communicated with the heat exchanger inlet header 3 and the heat exchanger outlet header 2. The special spiral structure of the spiral light pipe 24 enables water in the heat exchange pipe to generate secondary flow, so that convective heat exchange in the pipe is enhanced, deposition of external non-condensable gas on the outer surface of the pipe is inhibited, and the condensation heat exchange capability of the heat exchanger 1 arranged in the containment is enhanced.
In summary, the present invention provides a containment built-in high efficiency heat exchanger using a gravity flow type blowing system, which mainly comprises a heat exchanger inlet header, a heat exchange tube, a heat exchanger outlet header and a gravity flow type blowing system. The heat exchange tube in the heat exchanger in the containment adopts a straight tube light pipe or a spiral light pipe. The heat exchanger outlet header is connected with the external heat exchange water tank of the containment through the upper pipe section, and the heat exchanger inlet header is connected with the external heat exchange water tank of the containment through the lower pipe section, so that a passive containment cooling system is formed. The self-flowing air blowing system comprises a water delivery structure, a water bucket type water wheel, an air blowing structure, a drain pipe and a gear steering box. The self-flowing blowing system can convert water flow potential energy of steam condensation into jet flow kinetic energy to drive the blowing impeller to rotate, so that a non-condensable gas film near the heat exchange tube is blown away, and steam is better condensed and exchanges heat on the outer surface of the heat exchange tube. According to the invention, when a breach accident occurs in the containment, the heat in the containment can be efficiently taken away, the self-flowing blowing system can be used for effectively thinning the non-condensable gas film, enhancing the contact of steam and the tube bundle, realizing efficient heat transfer, ensuring that the temperature and pressure in the containment can be efficiently reduced under the accident condition, enhancing the safety of the containment and providing a feasible scheme for reducing the construction cost of the containment.
Claims (6)
1. The utility model provides an adopt built-in high-efficient heat exchanger of containment of gravity flow gas blowing system, built-in heat exchanger of containment include heat exchanger entry header, heat exchanger export header, heat exchange tube bank, be used for connecting heat exchanger and the external heat exchange water tank's of containment upper segment and low tube section, heat exchange tube bank UNICOM heat exchanger entry header and heat exchanger export header, its characterized in that respectively: the self-flowing type air blowing system is connected with the inner wall surface of the containment through a support column and comprises a water delivery structure, a bucket type water wheel, an air blowing structure and a drain pipe, wherein the water delivery structure comprises a funnel and a funnel water delivery pipe which are connected with each other, the bucket type water wheel comprises a rotary table and buckets, the rotary table is arranged in the funnel water delivery pipe through a main shaft, the buckets are evenly arranged on the rotary table, the air blowing structure comprises a gear steering box and air blowing impellers, the main shaft at the position of the rotary table transmits motion to the air blowing impellers through the gear steering box, the air blowing impellers are positioned at the middle lower part of the built-in heat exchanger of the containment, and one end of the drain pipe is communicated with the end part of the.
2. The in-containment efficient heat exchanger adopting the knock-on blowing system according to claim 1, wherein: an inlet header and an outlet header of the heat exchanger arranged in the containment adopt annular headers.
3. The in-containment efficient heat exchanger adopting the knock-on blowing system according to claim 2, wherein: the heat exchange tubes are preferably straight tube light tubes or spiral light tubes, are uniformly arranged in an annular mode, and are respectively communicated with the inlet header of the containment built-in heat exchanger and the outlet header of the containment built-in heat exchanger.
4. The in-containment efficient heat exchanger adopting the slash type blowing system as recited in claim 1, 2 or 3, wherein: the gear steering box is of a meshing gear structure for realizing motion steering.
5. The in-containment efficient heat exchanger adopting the slash type blowing system as recited in claim 1, 2 or 3, wherein: when a large amount of steam is condensed on the heat exchanger arranged in the containment, a large amount of condensed water is generated and flows downwards along the gravity direction on the heat exchanger arranged in the containment, condensed water is collected by a funnel in the water delivery structure and continuously flows downwards through the funnel water delivery pipe, and when the condensed water reaches the water bucket type water wheel, the water bucket type water wheel starts to rotate anticlockwise and quickly due to the water flow potential energy of the water bucket type water wheel, the rotating force of the water bucket type water wheel is transmitted to the blowing impeller through the main shaft and the gear steering box, so that the blowing impeller rotates quickly, a non-condensable gas film near the heat exchange pipe is blown away, the contact between the steam and the pipe bundle.
6. The in-containment efficient heat exchanger adopting the knock-on blowing system according to claim 4, wherein: when a large amount of steam is condensed on the heat exchanger arranged in the containment, a large amount of condensed water is generated and flows downwards along the gravity direction on the heat exchanger arranged in the containment, condensed water is collected by a funnel in the water delivery structure and continuously flows downwards through the funnel water delivery pipe, and when the condensed water reaches the water bucket type water wheel, the water bucket type water wheel starts to rotate anticlockwise and quickly due to the water flow potential energy of the water bucket type water wheel, the rotating force of the water bucket type water wheel is transmitted to the blowing impeller through the main shaft and the gear steering box, so that the blowing impeller rotates quickly, a non-condensable gas film near the heat exchange pipe is blown away, the contact between the steam and the pipe bundle.
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| CN202110246363.3A CN113035395A (en) | 2021-03-05 | 2021-03-05 | Containment built-in efficient heat exchanger adopting self-flowing air blowing system |
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| CN202110246363.3A CN113035395A (en) | 2021-03-05 | 2021-03-05 | Containment built-in efficient heat exchanger adopting self-flowing air blowing system |
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| CN1674161A (en) * | 2004-03-26 | 2005-09-28 | 株式会社东芝 | Pressure suppression and decontamination apparatus and method for reactor container |
| CN105810257A (en) * | 2014-12-29 | 2016-07-27 | 国核华清（北京）核电技术研发中心有限公司 | Pressure release condensation heat transfer system for passive nuclear power station |
| CN106782698A (en) * | 2016-11-28 | 2017-05-31 | 哈尔滨工程大学 | A kind of long-term efficient Passive containment cooling system of use spraying technique |
| US20180233240A1 (en) * | 2014-09-22 | 2018-08-16 | Korea Atomic Energy Research Institute | Nuclear power plant |
-
2021
- 2021-03-05 CN CN202110246363.3A patent/CN113035395A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1674161A (en) * | 2004-03-26 | 2005-09-28 | 株式会社东芝 | Pressure suppression and decontamination apparatus and method for reactor container |
| US20180233240A1 (en) * | 2014-09-22 | 2018-08-16 | Korea Atomic Energy Research Institute | Nuclear power plant |
| CN105810257A (en) * | 2014-12-29 | 2016-07-27 | 国核华清（北京）核电技术研发中心有限公司 | Pressure release condensation heat transfer system for passive nuclear power station |
| CN106782698A (en) * | 2016-11-28 | 2017-05-31 | 哈尔滨工程大学 | A kind of long-term efficient Passive containment cooling system of use spraying technique |
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Application publication date: 20210625 |
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