CN110111915B - Pressure-restraining cooling system suitable for small-sized stacks - Google Patents
Pressure-restraining cooling system suitable for small-sized stacks Download PDFInfo
- Publication number
- CN110111915B CN110111915B CN201910476239.9A CN201910476239A CN110111915B CN 110111915 B CN110111915 B CN 110111915B CN 201910476239 A CN201910476239 A CN 201910476239A CN 110111915 B CN110111915 B CN 110111915B
- Authority
- CN
- China
- Prior art keywords
- cooling
- water tank
- box
- annular water
- dry well
- 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.)
- Active
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 239000000498 cooling water Substances 0.000 claims abstract description 10
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 6
- 230000001629 suppression Effects 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000004964 aerogel Substances 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 7
- 230000017525 heat dissipation Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000012774 insulation material Substances 0.000 description 4
- 238000009835 boiling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention belongs to the technical field of pressure-restraining cooling systems, and particularly relates to a pressure-restraining cooling system suitable for a small-sized pile, wherein the upper part of a containment vessel is a steel hemispherical dome, the lower part of the containment vessel is a cylinder, and the upper part and the lower part of the containment vessel are isolated by a steel plate; an annular water tank is arranged in the cylinder, the outer round edge of the annular water tank is in sealing connection with the inner wall of the cylinder, the inner circle of the annular water tank is concave to form a barrel-shaped space, and a dry well is formed by the space between the outer surface of the annular water tank and the lower surface of the steel plate; the space between the inner surface of the annular water tank and the bottom surface of the cylinder forms a wet well together; the pressure vessel is arranged in the barrel-shaped space, a plurality of cooling boxes are arranged on the outer surface of the annular water tank, ice is filled in the cooling boxes, the upper cover plate is opened by the cooling boxes to cool the dry well after the pressure of the dry well is increased, after the ice is melted, the valve at the bottom of the cooling boxes is opened, cooling water is injected into the dry well to submerge the bottom of the pressure vessel for cooling in the wet well, and melting of the reactor core is avoided.
Description
Technical Field
The invention belongs to the technical field of suppression cooling systems, and particularly relates to a suppression cooling system suitable for a small stack.
Background
In recent years, the rapid development of nuclear power industry is greatly focused on the advantages of small-sized reactors, such as good safety design concept, simplified structure and capability of meeting the application requirements of special fields such as power supply, urban heat supply, industrial process heat supply, sea water desalination and the like of small-sized and medium-sized power grids. Meanwhile, the safety is also valued by people. The repression cooling technology is the reactor safety technology of the earliest commercial large-scale boiling water reactor, but because the small-scale reactor has the characteristics of small containment volume compared with the large-scale boiling water reactor, the pressure temperature can change more rapidly after the water loss accident occurs, the repression technology on the large-scale boiling water reactor is not suitable for the small-scale reactor; the research of the small heap suppression technology at home and abroad is a hot spot problem, but commercialization is not completed at present. How to provide a suppression cooling system suitable for a small-sized pile, which can provide early-stage rapid cooling and decompression and middle-stage long-term cooling for the small-sized pile under the condition that the small-sized pile has a water loss accident, and is an important problem to be solved by the development of the existing small-sized pile suppression technology.
Disclosure of Invention
Aiming at the technical problems, the invention provides a pressure-restraining cooling system suitable for a small-sized pile, wherein the upper part of a containment vessel is a steel hemispherical dome, the lower part of the containment vessel is a cylinder, and the upper part and the lower part of the containment vessel are isolated by a steel plate; an annular water tank is arranged in the cylinder, the outer round edge of the annular water tank is in sealing connection with the inner wall of the cylinder, the inner circle of the annular water tank is concave to form a barrel-shaped space, and a dry well is formed by the space between the outer surface of the annular water tank and the lower surface of the steel plate; the space between the inner surface of the annular water tank and the bottom surface of the cylinder forms a wet well together; the pressure vessel is arranged in the barrel-shaped space, a plurality of cooling boxes are arranged on the outer surface of the annular water tank, ice is arranged in the cooling boxes, the upper cover plate is opened by the cooling boxes to cool the dry well after the pressure of the dry well is increased, after the ice is melted, the valve at the bottom of the cooling boxes is opened, cooling water is injected into the dry well to submerge the bottom of the pressure vessel in the wet well to cool, and melting of the reactor core is avoided.
The upper cover plate of the cooling box is provided with a T-shaped groove, a round turntable is arranged at the intersection of the T-shaped groove, three holes on the round turntable are respectively connected with three bolts at the three tail ends of the T-shaped groove through three connecting rods, and the three bolts prop against the upper cover plate and are not separated from the box body of the cooling box; the circular turntable is connected with the fan-shaped box through a spanner-type switch, one end of the spanner-type switch is fixed with the circular turntable, the other end of the spanner-type switch is bifurcated, one side of the bifurcation forms a straight edge of one side of the fan-shaped box, the other side of the bifurcation forms an inner circular arc edge of the fan-shaped box, and the spanner-type switch rotates around the circular turntable under the pushing of the air pressure difference between the inside and the outside of the fan-shaped box, so that the three bolts are driven to move to enable the upper cover plate to be opened through the release spring.
The bottom of the cooling box is provided with a valve, the valve is a split type baffle, the baffle bears the gravity above the baffle and keeps the baffle closed in a normal state, and when the pressure on one side is overlarge, the baffle is opened to the other side.
The inner wall of the cooling box is provided with a heat insulation material to reduce heat dissipation of ice; the top and four walls of the thermal insulation material adopt aerogel felts, and the bottom of the inner layer adopts spherical aerogel particles.
The outer surface of the steel dome is provided with grooves along the radial direction, so that the heat dissipation area is increased, and meanwhile, water accumulation during raining and cleaning is avoided.
The space in the dome is water doped with partial alcohol, and the water is used as a phase change working medium to conduct out heat in the lower cylinder.
And nitrogen is filled in the dry well.
The invention has the beneficial effects that:
1, ice is used as a refrigerant in the early stage of a water loss accident, the effects of reducing temperature and pressure can be quickly achieved, and the cooling box is opened by a non-active means when the ice is stored and the accident occurs, so that the risk of system failure caused by key valve faults possibly existing in the active means is eliminated.
And 2, a valve for isolating the dry well from the wet well is positioned at the bottom of the cooling box, when the ice is consumed, the valve is automatically opened without other energy means or signals, and the valve is communicated with the wet well of the dry well, so that water is injected into the dry well to submerge the pressure container.
3, after the pressure vessel is submerged by water, the heat is absorbed and evaporated, and after the heat is transferred to working medium in the dome space on the steel plate, the working medium is condensed and reflowed, and the pressure vessel can be kept in a submerged state through natural circulation, so that the melting of the reactor core is prevented.
4 dome material is steel, and the surface has along radial recess, has increased the surface area, has improved the thermal efficiency of transfer to the atmosphere, and the recess is radial, can not leave ponding when raining, and water can be left along the recess when wasing, has reduced the maintenance degree of difficulty.
And 5, a half of the dome space is filled with a mixed solution of water and ethanol as a phase change working medium, the other half of the dome space is a gas space, the dome space is isolated from a dry well by a steel plate, the heat transfer effect is improved, the heat transferred into the dome space is absorbed by the working medium, the working medium transfers the heat into the steel dome through natural processes such as evaporation and condensation, and finally the heat is transferred to the atmosphere. By utilizing the principle of natural circulation, the long-term cooling of the containment can be realized without operator intervention, other starting signals or active means and the like when an accident occurs.
Drawings
Fig. 1 is a front cross-sectional view of the suppression cooling system of the present invention.
Fig. 2 is a perspective cross-sectional view of the suppression cooling system of the present invention.
Fig. 3 is a perspective view of the cooling tank of the present invention.
Fig. 4 is a perspective view of the upper cover plate of the cooling box of the present invention.
Fig. 5 is a perspective view of a cooling box spanner type switch of the present invention.
Fig. 6 is a diagram showing the closed state of the wrench type switch of the cooling box according to the present invention.
Fig. 7 is a diagram showing the open state of the wrench type switch of the cooling box according to the present invention.
Fig. 8 is a perspective view of a cooler bin latch of the present invention.
Fig. 9 is a perspective view of a cooling box connecting rod of the present invention.
Fig. 10 is a schematic view of the internal structure of the cooling tank of the present invention.
Fig. 11 is a front cross-sectional view of the cooling tank bottom valve of the present invention in a closed state.
Fig. 12 is a side view of the cooling tank bottom valve of the present invention in an open state.
Fig. 13 is a bottom view of the cooler bin of the present invention.
Wherein, 1-cooling tank, 2-wet well, 3-pressure vessel, 4-steel plate, 5-dome space, 6-dry well, 7-dome, 8-containment, 9-annular water tank, 10-connecting rod, 11-spanner type switch, 12-fan-shaped box, 13-T type groove, 14-fan-shaped box, 15-circular turntable, 16-connecting rod, 17-plug, 18-ice, 19-aerogel blanket, 20-spherical aerogel particles, 21-valve
Detailed Description
The embodiments are described in detail below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the invention provides a suppression cooling system suitable for a small-sized pile, wherein the upper part of a containment is a hemispherical dome, the lower part of the containment is a cylinder, and the upper part and the lower part are isolated by a steel plate; an annular water tank is arranged in the cylinder, the outer round edge of the annular water tank is in sealing connection with the inner wall of the cylinder, the inner circle of the annular water tank is concave to form a barrel-shaped space, and a dry well is formed between the upper surface of the annular water tank and the lower surface of the steel plate; the lower surface of the annular water tank and the bottom surface of the cylinder form a wet well together; the pressure vessel is arranged in the barrel-shaped space, the upper surface of the annular water tank is provided with a plurality of cooling boxes, ice is arranged in the cooling boxes, the upper cover plate is opened by the cooling boxes to cool the dry well after the pressure of the dry well is increased, after the ice is melted, the valve at the bottom of the cooling boxes is opened, cooling water is injected into the dry well to submerge the bottom of the pressure vessel in the wet well to cool, and melting of the reactor core is avoided.
As shown in fig. 3-9, the upper cover plate is provided with a T-shaped groove, a round turntable is arranged at the intersection of the T-shaped groove, three holes on the round turntable are respectively connected with three bolts at the three tail ends of the T-shaped groove through three connecting rods, and the three bolts prop against the upper cover plate and are not separated from the cooling box body; the circular turntable is connected with the fan-shaped box through a spanner-type switch, one end of the spanner-type switch is fixed with the circular turntable, the other end of the spanner-type switch is bifurcated, one side of the bifurcation forms a straight edge of one side of the fan-shaped box, the other side of the bifurcation forms an inner circular arc edge of the fan-shaped box, and the spanner-type switch rotates around the circular turntable under the pushing of the air pressure difference between the inside and the outside of the fan-shaped box, so that the three bolts are driven to move to enable the upper cover plate to be opened through the release spring.
As shown in fig. 10 to 11, the inner wall of the cooling box is provided with a heat insulation material to reduce the heat dissipation of ice; the top and four walls of the thermal insulation material adopt aerogel felts, and the bottom of the inner layer adopts spherical aerogel particles.
As shown in fig. 12-13, a valve is arranged at the bottom of the cooling box, the valve is a split type baffle, the baffle bears the gravity above the valve in a normal state and keeps the baffle closed, and when the pressure on one side is excessive, the baffle is opened to the other side.
The outer surface of the steel dome is provided with grooves along the radial direction, so that the heat dissipation area is increased, and meanwhile, water accumulation during raining and cleaning is avoided. The space in the dome is a phase change working medium made of water and ethanol. And nitrogen is filled in the dry well.
When the water loss accident occurs, the pressure and temperature in the dry well are increased, and under the action of the pressure difference, the spanner type switch is pressed into the fan-shaped box to drive the switch of the cooling box to open the upper cover plate, so that the ice is contacted with the high-temperature gas.
The lower half part of the pressure vessel is surrounded by the wet well, the cooling boxes are arranged on the horizontal plane of the upper part and the horizontal plane of the lower part of the annular water tank, 4 upper and lower horizontal planes are respectively arranged, and the pressure vessels are distributed in a central symmetry way by taking the pressure vessel as a symmetry axis. When water loss accident happens, a large amount of high temperature steam or steam-water mixture can be generated in the dry well, so that the temperature and pressure in the dry well are quickly increased, a spanner type switch is pressed into the fan-shaped box under the driving of pressure difference, a bolt of the cooling box is driven to shrink, a spring is arranged on a shaft connected with the box body of the cooling box upper cover plate, the upper cover plate is opened by the shrinkage of the spring, ice contacts with the high temperature steam or steam-water mixture, the ice is quickly melted, meanwhile, the temperature and pressure in the dry well are reduced, when the ice is melted, a valve at the bottom of the cooling box is opened under the effect of pressure difference, the dry well and a wet well are communicated, cooling water in the wet well is injected into the dry well, the bottom of the wet submerged pressure container is cooled, and the melting of a reactor core is avoided. The water absorbs heat and evaporates, contacts the steel plate with high-temperature and high-pressure steam and steam-water mixture in the dry well, transfers heat to working medium consisting of water and ethanol in the dome space, and finally the working medium in the dome space transfers heat to the dome through natural processes such as evaporation, condensation and the like, and finally the heat is transferred to the atmosphere, so that long-term cooling is realized.
For the cooling box positioned on the wet well wall, when an accident does not occur, the upper surface of the bottom valve is subjected to the gravity of spherical aerogel particles in the channel and the partial gravity of ice, the lower surface of the bottom valve is separated from the water surface in the wet well by a certain distance, and the bottom valve cannot be opened due to the pressure difference; after the accident happens, the cooling box is opened, the ice is melted into an ice-water mixture, the upper part of the valve bears the gravity of the ice-water mixture and the pressure exerted by the high-temperature high-pressure gas mixture filled in the dry well, the lower part of the valve is still at atmospheric pressure, and the pressure difference enables the bottom valve to be opened downwards.
For the cooling box at the lower part of the wet well wall, the upper part of the bottom valve is stressed when no accident happens, and the sources of the stress are the gravity of spherical aerogel particles, part of the gravity of ice and the stress of the upper surface and the lower surface. When an accident occurs, the bottom valve of the cooling box on the wet well wall is firstly opened, the mixed gas with high temperature and high pressure is introduced into cooling water in the wet well from the upper part of the wet well wall, and a large impact force is applied to the lower side of the bottom valve of the cooling box in the mixing process of the mixed gas and the cooling water, so that the stress balance of the bottom valve of the cooling box at the lower part is destroyed, the bottom valve of the cooling box is opened from bottom to top, thereby communicating a dry well and a wet well space, and the cooling water flows out from the bottom valve of the cooling box at the lower part of the wet well wall to submerge the bottom of the reactor.
The present invention is not limited to the preferred embodiments, and any changes or substitutions that would be apparent to one skilled in the art within the scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (6)
1. A suppression cooling system suitable for a small-sized pile is characterized in that the upper part of a containment vessel is a steel hemispherical dome, the lower part of the containment vessel is a cylinder, and the upper part and the lower part of the containment vessel are isolated by a steel plate; an annular water tank is arranged in the cylinder, the outer round edge of the annular water tank is in sealing connection with the inner wall of the cylinder, the inner circle of the annular water tank is concave to form a barrel-shaped space, and a dry well is formed by the space between the outer surface of the annular water tank and the lower surface of the steel plate; the space between the inner surface of the annular water tank and the bottom surface of the cylinder forms a wet well together; the pressure container is arranged in the barrel-shaped space, a plurality of cooling boxes are arranged on the outer surface of the annular water tank, ice is arranged in the cooling boxes, an upper cover plate of each cooling box is opened to cool the dry well after the pressure of the dry well is increased, a valve at the bottom of each cooling box is opened after the ice is melted, and cooling water in the wet well is injected into the bottom of each dry well to submerge the pressure container for cooling, so that melting of a reactor core is avoided;
the upper cover plate of the cooling box is provided with a T-shaped groove, a round turntable is arranged at the intersection of the T-shaped groove, three holes on the round turntable are respectively connected with three bolts at the three tail ends of the T-shaped groove through three connecting rods, and the three bolts prop against the upper cover plate and are not separated from the box body of the cooling box; the circular turntable is connected with the fan-shaped box through a spanner-type switch, one end of the spanner-type switch is fixed with the circular turntable, the other end of the spanner-type switch is bifurcated, one bifurcated side forms a straight edge of one side of the fan-shaped box, the other bifurcated side forms an inner circular arc edge of the fan-shaped box, and the spanner-type switch rotates around the circular turntable under the pushing of the air pressure difference between the inside and the outside of the fan-shaped box, so that the three bolts are driven to move to enable the upper cover plate to be opened through the release spring;
the dome is made of steel to enhance heat transfer efficiency, and the outer surface of the dome is provided with grooves along the radial direction, so that the heat dissipation area is increased, and meanwhile, water accumulation during raining and cleaning is avoided;
the space in the dome is a phase change working medium made of a mixed solution of water and ethanol.
2. A suppression cooling system suitable for a small-sized pile is characterized in that the upper part of a containment vessel is a steel hemispherical dome, the lower part of the containment vessel is a cylinder, and the upper part and the lower part of the containment vessel are isolated by a steel plate; an annular water tank is arranged in the cylinder, the outer round edge of the annular water tank is in sealing connection with the inner wall of the cylinder, the inner circle of the annular water tank is concave to form a barrel-shaped space, and a dry well is formed by the space between the outer surface of the annular water tank and the lower surface of the steel plate; the space between the inner surface of the annular water tank and the bottom surface of the cylinder forms a wet well together; the pressure container is arranged in the barrel-shaped space, a plurality of cooling boxes are arranged on the outer surface of the annular water tank, ice is arranged in the cooling boxes, an upper cover plate of each cooling box is opened to cool the dry well after the pressure of the dry well is increased, a valve at the bottom of each cooling box is opened after the ice is melted, and cooling water in the wet well is injected into the bottom of each dry well to submerge the pressure container for cooling, so that melting of a reactor core is avoided;
the upper cover plate of the cooling box is provided with a T-shaped groove, a round turntable is arranged at the intersection of the T-shaped groove, three holes on the round turntable are respectively connected with three bolts at the three tail ends of the T-shaped groove through three connecting rods, and the three bolts prop against the upper cover plate and are not separated from the box body of the cooling box; the circular turntable is connected with the fan-shaped box through a spanner-type switch, one end of the spanner-type switch is fixed with the circular turntable, the other end of the spanner-type switch is bifurcated, one bifurcated side forms a straight edge of one side of the fan-shaped box, the other bifurcated side forms an inner circular arc edge of the fan-shaped box, and the spanner-type switch rotates around the circular turntable under the pushing of the air pressure difference between the inside and the outside of the fan-shaped box, so that the three bolts are driven to move to enable the upper cover plate to be opened through the release spring;
the dome is made of steel to enhance heat transfer efficiency, and the outer surface of the dome is provided with grooves along the radial direction, so that the heat dissipation area is increased, and meanwhile, water accumulation during raining and cleaning is avoided;
and nitrogen is filled in the dry well.
3. A suppression cooling system suitable for a small-sized pile is characterized in that the upper part of a containment vessel is a steel hemispherical dome, the lower part of the containment vessel is a cylinder, and the upper part and the lower part of the containment vessel are isolated by a steel plate; an annular water tank is arranged in the cylinder, the outer round edge of the annular water tank is in sealing connection with the inner wall of the cylinder, the inner circle of the annular water tank is concave to form a barrel-shaped space, and a dry well is formed by the space between the outer surface of the annular water tank and the lower surface of the steel plate; the space between the inner surface of the annular water tank and the bottom surface of the cylinder forms a wet well together; the pressure container is arranged in the barrel-shaped space, a plurality of cooling boxes are arranged on the outer surface of the annular water tank, ice is arranged in the cooling boxes, an upper cover plate of each cooling box is opened to cool the dry well after the pressure of the dry well is increased, a valve at the bottom of each cooling box is opened after the ice is melted, and cooling water in the wet well is injected into the bottom of each dry well to submerge the pressure container for cooling, so that melting of a reactor core is avoided;
the upper cover plate of the cooling box is provided with a T-shaped groove, a round turntable is arranged at the intersection of the T-shaped groove, three holes on the round turntable are respectively connected with three bolts at the three tail ends of the T-shaped groove through three connecting rods, and the three bolts prop against the upper cover plate and are not separated from the box body of the cooling box; the circular turntable is connected with the fan-shaped box through a spanner-type switch, one end of the spanner-type switch is fixed with the circular turntable, the other end of the spanner-type switch is bifurcated, one bifurcated side forms a straight edge of one side of the fan-shaped box, the other bifurcated side forms an inner circular arc edge of the fan-shaped box, and the spanner-type switch rotates around the circular turntable under the pushing of the air pressure difference between the inside and the outside of the fan-shaped box, so that the three bolts are driven to move to enable the upper cover plate to be opened through the release spring;
the space in the dome is a phase change working medium made of a mixed solution of water and ethanol;
and nitrogen is filled in the dry well.
4. A repression cooling system according to claim 1, 2 or 3, wherein the bottom of the cooling box is provided with a valve, the valve is a split type baffle, the baffle is kept closed by bearing the gravity above the valve in a normal state, and when the pressure on one side is excessive, the baffle is opened to the other side;
the cooling box wraps ice by using an inner layer, aerogel felts are adopted at the top and four walls of the inner layer, and spherical aerogel particles are adopted at the bottom of the inner layer.
5. The suppression cooling system of claim 1 wherein the bottom of the cooling tank is provided with a valve which is a split type baffle, the baffle being held closed by gravity above in a normal state, the baffle being opened to the other side when the pressure on one side is excessive;
and nitrogen is filled in the dry well.
6. The suppression cooling system of claim 1 wherein the cooling box is wrapped with ice by an inner layer, the top and four walls of the inner layer being aerogel blanket, the bottom of the inner layer being spherical aerogel particles;
and nitrogen is filled in the dry well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910476239.9A CN110111915B (en) | 2019-06-03 | 2019-06-03 | Pressure-restraining cooling system suitable for small-sized stacks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910476239.9A CN110111915B (en) | 2019-06-03 | 2019-06-03 | Pressure-restraining cooling system suitable for small-sized stacks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110111915A CN110111915A (en) | 2019-08-09 |
| CN110111915B true CN110111915B (en) | 2024-03-08 |
Family
ID=67493645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910476239.9A Active CN110111915B (en) | 2019-06-03 | 2019-06-03 | Pressure-restraining cooling system suitable for small-sized stacks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110111915B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH281818A (en) * | 1949-11-21 | 1952-03-31 | Korber Hans | Clamping device with chuck, on machine tool. |
| FR1511920A (en) * | 1966-02-18 | 1968-02-02 | Westinghouse Electric Corp | Pressure-relieving mounting |
| US3459635A (en) * | 1966-12-29 | 1969-08-05 | Combustion Eng | Containment pressure reduction system and radioactivity removal system for nuclear reactor installations |
| GB1237390A (en) * | 1967-10-14 | 1971-06-30 | Siemens Ag | Nuclear reactor installations |
| US3715274A (en) * | 1969-08-15 | 1973-02-06 | Gen Electric | Nuclear fuel assembly with reinforced flow channel |
| US3726759A (en) * | 1969-04-29 | 1973-04-10 | Westinghouse Electric Corp | Nuclear reactor condenser support structure |
| JP2000075080A (en) * | 1998-08-31 | 2000-03-14 | Toshiba Corp | Jet pump inspection device and treatment device |
| JP2003182340A (en) * | 2001-12-20 | 2003-07-03 | Denso Corp | Vehicular air conditioning device |
| JP2004003447A (en) * | 2002-04-19 | 2004-01-08 | Matsushita Electric Ind Co Ltd | Impeller of fan for air-conditioner |
| CN104295852A (en) * | 2014-10-13 | 2015-01-21 | 北京市燃气集团有限责任公司 | Pipe fitting plugging mechanism and plugging method thereof |
| FR3011667A1 (en) * | 2013-10-09 | 2015-04-10 | Commissariat Energie Atomique | FAST NEUTRON REACTOR COMPRISING A RESIDUAL POWER DRAINAGE CIRCUIT WITH THERMOPOMPES |
| WO2015149718A1 (en) * | 2014-04-03 | 2015-10-08 | 国核（北京）科学技术研究院有限公司 | Passive containment heat removal system, control method thereof and pressurized water reactor |
| CN106898389A (en) * | 2015-12-21 | 2017-06-27 | 中国核动力研究设计院 | A kind of constrain cooling system of inherently safe containment |
| WO2018208495A1 (en) * | 2017-05-10 | 2018-11-15 | Westinghouse Electric Company Llc | A vortex driven passive hydrogen recombiner and igniter |
| CN109523872A (en) * | 2018-05-31 | 2019-03-26 | 华北电力大学 | Multi-functional fluid delamination Teaching demonstrating jack horse |
| CN211879022U (en) * | 2019-06-03 | 2020-11-06 | 华北电力大学 | Small passive suppression type containment cooling system |
-
2019
- 2019-06-03 CN CN201910476239.9A patent/CN110111915B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH281818A (en) * | 1949-11-21 | 1952-03-31 | Korber Hans | Clamping device with chuck, on machine tool. |
| FR1511920A (en) * | 1966-02-18 | 1968-02-02 | Westinghouse Electric Corp | Pressure-relieving mounting |
| US3459635A (en) * | 1966-12-29 | 1969-08-05 | Combustion Eng | Containment pressure reduction system and radioactivity removal system for nuclear reactor installations |
| GB1237390A (en) * | 1967-10-14 | 1971-06-30 | Siemens Ag | Nuclear reactor installations |
| US3726759A (en) * | 1969-04-29 | 1973-04-10 | Westinghouse Electric Corp | Nuclear reactor condenser support structure |
| US3715274A (en) * | 1969-08-15 | 1973-02-06 | Gen Electric | Nuclear fuel assembly with reinforced flow channel |
| JP2000075080A (en) * | 1998-08-31 | 2000-03-14 | Toshiba Corp | Jet pump inspection device and treatment device |
| JP2003182340A (en) * | 2001-12-20 | 2003-07-03 | Denso Corp | Vehicular air conditioning device |
| JP2004003447A (en) * | 2002-04-19 | 2004-01-08 | Matsushita Electric Ind Co Ltd | Impeller of fan for air-conditioner |
| FR3011667A1 (en) * | 2013-10-09 | 2015-04-10 | Commissariat Energie Atomique | FAST NEUTRON REACTOR COMPRISING A RESIDUAL POWER DRAINAGE CIRCUIT WITH THERMOPOMPES |
| WO2015149718A1 (en) * | 2014-04-03 | 2015-10-08 | 国核（北京）科学技术研究院有限公司 | Passive containment heat removal system, control method thereof and pressurized water reactor |
| CN104295852A (en) * | 2014-10-13 | 2015-01-21 | 北京市燃气集团有限责任公司 | Pipe fitting plugging mechanism and plugging method thereof |
| CN106898389A (en) * | 2015-12-21 | 2017-06-27 | 中国核动力研究设计院 | A kind of constrain cooling system of inherently safe containment |
| WO2018208495A1 (en) * | 2017-05-10 | 2018-11-15 | Westinghouse Electric Company Llc | A vortex driven passive hydrogen recombiner and igniter |
| CN109523872A (en) * | 2018-05-31 | 2019-03-26 | 华北电力大学 | Multi-functional fluid delamination Teaching demonstrating jack horse |
| CN211879022U (en) * | 2019-06-03 | 2020-11-06 | 华北电力大学 | Small passive suppression type containment cooling system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110111915A (en) | 2019-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4479352A (en) | Hot-water storage type power generating unit | |
| CN105715943B (en) | A kind of solid high-voltage mixing hydrogen container | |
| US10529459B2 (en) | Passive containment heat removal system and control method thereof | |
| CN108520785B (en) | Passive waste heat discharging system and waste heat discharging method for molten salt reactor | |
| KR102422211B1 (en) | nuclear reactor core | |
| CN112071451B (en) | Multifunctional double-layer concrete containment system of pressurized water reactor | |
| CN203931515U (en) | Based on actively adding of 177 reactor cores non-active nuclear steam supply system and nuclear power station thereof | |
| CN112117016B (en) | Heat transfer system for reactor core of heat pipe reactor | |
| CN103985422A (en) | Active and passive nuclear steam supplying system based on 177 reactor core and nuclear power station thereof | |
| CN211879022U (en) | Small passive suppression type containment cooling system | |
| CN111105883A (en) | Heat pipe reactor system with supercritical carbon dioxide as thermoelectric conversion working medium | |
| CN112102972B (en) | Reactor core heat transfer scheme for high-power heat pipe reactor | |
| EP3874220A1 (en) | Thermal energy storage assembly | |
| CN110111915B (en) | Pressure-restraining cooling system suitable for small-sized stacks | |
| CN207796542U (en) | A kind of steam energy storage device | |
| CN103388999A (en) | Spray packed bed heat storage device | |
| CN104464841A (en) | Thermal insulation plate for built-in steam pressurizer of pressurized water reactor and integrated pressurized water reactor formed by thermal insulation plate | |
| CN104142079B (en) | A kind of heat accumulation-heat transmission equipment | |
| US4313795A (en) | Nuclear power plant with on-site storage capabilities | |
| CN114927255A (en) | Nuclear power supply integrating alkali metal thermoelectric converter and thermoelectric generator | |
| CN103531256A (en) | Pressurized water reactor prestressed concrete containment passive cooling system | |
| CN102032798B (en) | High-temperature material cooling and afterheat recycling system in calcinater | |
| CN210108107U (en) | Normal-pressure phase-change heat storage device | |
| CN112133455A (en) | Dual-mode reactor core | |
| CN115862903A (en) | Nano porous material filled solid reactor core structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |