CN113035391A - Containment built-in efficient heat exchanger adopting self-flow type air suction system - Google Patents
Containment built-in efficient heat exchanger adopting self-flow type air suction system Download PDFInfo
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- CN113035391A CN113035391A CN202110244944.3A CN202110244944A CN113035391A CN 113035391 A CN113035391 A CN 113035391A CN 202110244944 A CN202110244944 A CN 202110244944A CN 113035391 A CN113035391 A CN 113035391A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 84
- 230000005484 gravity Effects 0.000 claims description 6
- 230000005494 condensation Effects 0.000 abstract description 13
- 238000009833 condensation Methods 0.000 abstract description 13
- 238000005381 potential energy Methods 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 4
- 230000002708 enhancing effect Effects 0.000 abstract description 4
- 230000001965 increasing effect Effects 0.000 description 5
- 238000000596 photon cross correlation spectroscopy Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000008021 deposition 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
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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
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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
- 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
- G21C15/243—Promoting flow of the coolant for liquids
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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
Abstract
The invention provides a containment built-in efficient heat exchanger adopting a self-flowing air suction system, which mainly comprises a heat exchanger inlet header, a heat exchange pipe, a heat exchanger outlet header and the self-flowing air suction system, wherein the self-flowing air suction system comprises a water delivery structure, a water bucket type water wheel, an air suction structure, a drain pipe, an exhaust pipe and a gear steering box. The self-flowing air suction system can convert water flow potential energy of steam condensation into jet flow kinetic energy to drive the air suction impeller to rotate to generate suction force, so that a non-condensable gas film near the heat exchange tube is sucked 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 air suction 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.
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 air suction 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 an in-containment efficient heat exchanger adopting a self-flow type air suction system to enhance the condensation capacity of the in-containment heat exchanger, efficiently take away heat in a containment, ensure that the inside 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-flow type air suction 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 water bucket type water wheel comprises a rotary table arranged in the funnel water delivery pipe through a main shaft and water buckets uniformly arranged on the rotary table, the air suction structure comprises a gear steering box, an air suction impeller and an air suction pipe, the main shaft where the rotary table is located transmits motion to a shaft where the air suction impeller is located through the gear steering box, the air suction impeller is located in a driven shell, one end of the air suction pipe is connected to the driven shell, and the other end of the air suction pipe extends to the position of the heat exchange pipe bundle; the driven shell is connected with the inner wall of the containment through a support column, one end of the drain pipe is arranged on the driving shell at the lower part of the rotating wheel, and the other end of the drain pipe extends to the side wall surface of the pit; one end of the exhaust pipe is arranged at the driven shell at the lower part of the air suction impeller, and the other end of the exhaust pipe extends to the bottom of the containment.
The invention also includes such structural features:
1. the safety shell is characterized by further comprising a gas storage compartment, the gas storage compartment is a cylindrical tank body, the lower portion of the gas storage compartment is fixed with the bottom of the safety shell, the end portion of the exhaust pipe extends into the gas storage compartment, the lower portion of the gas storage compartment is provided with a gas equalizing hole plate, and the upper portion of the gas storage compartment is provided with two parallel circular exhaust holes.
2. 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.
3. The gear steering box is of a meshing gear structure for realizing motion steering.
Compared with the prior art, the invention has the beneficial effects that:
1) the invention introduces a self-flow air suction system into the heat exchanger arranged in the containment. The non-condensable gas film around the heat exchange tube is sucked 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-flow air suction system adopted by the invention is a passive device, 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 suction device.
3) The invention adopts the air suction pipeline, and can store the non-condensable gas sucked by the air suction equipment to the bottom of the air space in the containment through the pipeline, so that the non-condensable gas does not participate in the circulation of the main air space in the containment, the mass share of the steam participating in condensation heat exchange is increased, and the heat exchange capacity of the heat exchanger is enhanced.
4) 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.
5) 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 self-aspirating system;
FIG. 3 is a schematic view of a suction configuration;
FIG. 4a is a bottom view of the suction structure, and FIG. 4b is a top view of the suction structure;
FIG. 5a is a front view and FIG. 5b is a top view of a straight tube bundle heat exchanger;
fig. 6a is a front view and fig. 6b is a top view of a spiral 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 an in-containment efficient heat exchanger using a gravity flow air induction 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 delivery structure 6, a gear steering box 7, an air suction structure 8, a support column 9, a containment inner wall surface 10, a drain pipe 11, a containment air space 12, an exhaust pipe 13 and an air suction pipe 14.
The invention relates to a containment built-in efficient heat exchanger adopting a self-flowing air suction 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 air suction 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 type air suction system comprises a water delivery structure, a water bucket type water wheel, an air suction 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 suction structure, and the self-flowing type air suction 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 suction structure comprises a main shaft, an air suction impeller, an air suction pipe and a shell, wherein the air suction impeller is arranged at the lower part of the shell; 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 air suction impeller are driven by a gear steering box, the air inlets of the air suction pipes are arranged near the heat exchange pipes and are sequentially arranged in an increasing manner from bottom to top at intervals, and the air outlets are connected with the upper part of the shell;
the outlet of the drain pipe is arranged near the side wall surface of the pile pit; one end of the exhaust pipe is arranged at the lower part of the air suction impeller, and the other end of the exhaust pipe is arranged at the corner of the bottom of the containment;
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 a gas film and promote the condensation heat exchange of steam, a self-flowing air suction system is designed, and comprises three parts: water delivery structures (as shown in figure 2), water bucket wheels (as shown in figure 2) and air suction structures (as shown in figures 3 and 4). The gravity flow type air suction system can convert water flow potential energy of steam condensation into air suction kinetic energy, so that non-condensable gas films near the heat exchange tubes are sucked away, and steam is better condensed and exchanges heat on the outer surfaces of the heat exchange tubes. Through the designed self-flowing air suction 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 suction system comprises a water conveying structure 6, a water bucket type water wheel 17, an air suction structure 8, a drain pipe 11 and an exhaust pipe 13. The pelton type water wheel 17 is installed in the water delivery structure 6 and connected with the air suction structure 8, and the self-flowing air suction system is connected with the inner wall surface 10 of the containment through the supporting column 9.
The water delivery structure 6 comprises a funnel 15 and a funnel water delivery pipe 16, 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 17 comprises a wheel disc and a water bucket 18 and has the function of converting water flow potential energy into jet flow kinetic energy; the air suction structure 8 comprises a main shaft 19, a gear steering box 7 and an air suction impeller 20; the water bucket type water wheel 17 is connected with the air suction impeller 20 through the main shaft 19 and the gear steering box 7, the water bucket type water wheel 17 is set as a driving wheel, and the air suction impeller 20 is set as a driven wheel; the intake impeller 20, the intake pipe 14, and the exhaust pipe 13 are fixed to a driven casing 21. The suction ducts 13 have their air inlets disposed in the vicinity of the heat exchange tubes and arranged at successively increasing intervals from bottom to top, and their air outlets connected to the upper portion of the driven housing 21, preferably arranged as shown in fig. 4.
When 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 then 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 the funnel 15 in the water conveying structure 6 and continues to flow downwards through the funnel water conveying pipe 16, and when the condensed water reaches the bucket water wheel 17, the bucket water wheel 18 is hit by the water flow potential energy, so that the bucket water wheel 17 starts to rotate anticlockwise and quickly, the rotating force of the bucket water wheel is transmitted to the air suction impeller 20 through the main shaft 19 and the gear steering box 7, so that the air suction impeller 20 rotates quickly in the driven shell 21 to generate negative pressure, a suction force is formed, through the air suction pipe 13, a non-condensable gas film near the heat exchange pipe is sucked away, the contact between.
The water after hitting the water bucket 18 is discharged into the pit through the drain pipe 11 for storage, and the non-condensable gas sucked by the suction impeller 20 can be discharged to the corner of the bottom of the containment vessel through the exhaust pipe 13, so that the non-condensable gas does not participate in the gas circulation of the main gas space 12, the non-condensable gas share of the main gas space 12 is reduced, and the condensation efficiency of steam is increased.
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. 5 and 6), 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 22 (as shown in figure 5) or a spiral light pipe 23 (as shown in figure 6). The heat exchange tubes are arranged in a plurality of rings, preferably uniformly (as shown in figures 5 and 6), and 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 23 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 air suction system, which mainly comprises a heat exchanger inlet header, a heat exchange tube, a heat exchanger outlet header and a gravity flow type air suction 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 suction system comprises a water delivery structure, a water bucket type water wheel, an air suction structure, a drain pipe, an exhaust pipe and a gear steering box. The self-flowing air suction system can convert water flow potential energy of steam condensation into jet flow kinetic energy to drive the air suction impeller to rotate to generate suction force, so that a non-condensable gas film near the heat exchange tube is sucked 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 air suction 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 (5)
1. The utility model provides an adopt built-in high-efficient heat exchanger of containment of gravity flow air suction 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 suction system is connected with the inner wall surface of the containment through a support column and comprises a water delivery structure, a water bucket type water wheel, an air suction 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, and the funnel is positioned below the heat exchange pipe bundle; the water bucket type water wheel comprises a rotary table arranged in the funnel water delivery pipe through a main shaft and water buckets uniformly arranged on the rotary table, the air suction structure comprises a gear steering box, an air suction impeller and an air suction pipe, the main shaft where the rotary table is located transmits motion to a shaft where the air suction impeller is located through the gear steering box, the air suction impeller is located in a driven shell, one end of the air suction pipe is connected to the driven shell, and the other end of the air suction pipe extends to the position of the heat exchange pipe bundle; the driven shell is connected with the inner wall of the containment through a support column, one end of the drain pipe is arranged on the driving shell at the lower part of the rotating wheel, and the other end of the drain pipe extends to the side wall surface of the pit; one end of the exhaust pipe is arranged at the driven shell at the lower part of the air suction impeller, and the other end of the exhaust pipe extends to the bottom of the containment.
2. The in-containment efficient heat exchanger adopting the self-flowing air suction system according to claim 1, wherein: the safety shell is characterized by further comprising a gas storage compartment, the gas storage compartment is a cylindrical tank body, the lower portion of the gas storage compartment is fixed with the bottom of the safety shell, the end portion of the exhaust pipe extends into the gas storage compartment, the lower portion of the gas storage compartment is provided with a gas equalizing hole plate, and the upper portion of the gas storage compartment is provided with two parallel circular exhaust holes.
3. The in-containment efficient heat exchanger adopting the self-flowing air suction system according to claim 1 or 2, wherein: 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.
4. The in-containment efficient heat exchanger adopting the self-flowing air suction system according to claim 1 or 2, wherein: the gear steering box is of a meshing gear structure for realizing motion steering.
5. The in-containment efficient heat exchanger adopting the self-flowing air suction system according to claim 3, wherein: the gear steering box is of a meshing gear structure for realizing motion steering.
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| CN202110244944.3A CN113035391A (en) | 2021-03-05 | 2021-03-05 | Containment built-in efficient heat exchanger adopting self-flow type air suction system |
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| CN202110244944.3A CN113035391A (en) | 2021-03-05 | 2021-03-05 | Containment built-in efficient heat exchanger adopting self-flow type air suction system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115019984A (en) * | 2022-06-14 | 2022-09-06 | 哈尔滨工程大学 | PCS built-in high-efficiency heat exchanger adopting serpentine heat transfer pipe |
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