CN112599257B - Marine capillary force driven containment heat export system - Google Patents
Marine capillary force driven containment heat export system Download PDFInfo
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- CN112599257B CN112599257B CN202011385448.1A CN202011385448A CN112599257B CN 112599257 B CN112599257 B CN 112599257B CN 202011385448 A CN202011385448 A CN 202011385448A CN 112599257 B CN112599257 B CN 112599257B
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- Prior art keywords
- containment
- porous structure
- marine
- water
- capillary force
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000005260 corrosion Methods 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 6
- 239000012530 fluid Substances 0.000 abstract 1
- 238000005507 spraying Methods 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 5
- 230000008020 evaporation Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000941 radioactive substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000003904 radioactive pollution Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001960 triggered effect Effects 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/18—Use of propulsion power plant or units on vessels the vessels being powered by nuclear energy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H21/00—Use of propulsion power plant or units on vessels
- B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
- B63H21/383—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like for handling cooling-water
-
- 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
- G21C15/12—Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices from pressure vessel; from containment vessel
-
- 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
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/50—Measures to reduce greenhouse gas emissions related to the propulsion system
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention relates to a marine capillary force driven containment heat conduction system which comprises a water tank, wherein a containment is arranged in the water tank, and the outer surface of the containment is provided with a porous structure with capillary driving force on water. The heat conduction system drives fluid to flow on the surface of the containment through the capillary force of the porous structure to the liquid, so that heat in the containment is taken away.
Description
Technical Field
The invention relates to a heat device of a containment in a nuclear power station, in particular to a marine capillary force driven containment heat conduction system.
Background
When a water loss accident occurs in a primary loop of the nuclear power plant or a main steam pipeline in the containment is broken, high-temperature and high-pressure coolant or steam enters the containment, so that the temperature and the pressure in the containment are rapidly increased, if no cooling and depressurization measures are taken, the equipment in the containment can be damaged, the tightness of the containment is threatened, and even the containment is broken, so that large-scale radioactive substances are released into the environment, and serious radioactive pollution is caused.
At present, the main stream of the nuclear power in operation in China mainly adopts a containment spraying system to reduce the internal pressure and temperature of the containment under the accident working condition, the containment spraying system mainly comprises a spraying pump, a spraying pipe pipeline, an external water tank and the like, and water in the external water tank is sprayed into the containment through the spraying pump by the spraying pipe pipeline to condense steam in the containment, so that the aim of reducing the internal temperature and pressure of the containment is fulfilled. The main problem faced by the method is that alternating current needs to be provided in the operation process of the spray pump, the risk of failure of the spray system caused by power loss is certainly increased, and the problem of a large number of difficulties in space arrangement and maintenance of ships is caused by directly applying the spray system to a marine nuclear power plant.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and combines the characteristics of small containment vessel of a marine nuclear power device, and the like, and provides a marine capillary force driven containment vessel heat conduction system.
The technical scheme adopted for achieving the purpose of the invention is that the marine capillary force driven containment heat conduction system comprises a water tank, wherein the containment is arranged in the water tank, the outer surface of the containment is provided with a porous structure with capillary driving force on water, and holes in the porous structure are communicated with each other.
In the technical scheme, the porous structure is formed by sintering microspherical copper particles.
Further, the pore diameter of the porous structure is 10 μm to 500 μm.
Further, an air guide cylinder is arranged on the periphery of the porous structure, an air flow channel is formed between the air guide cylinder and the porous structure, and an air outlet is formed in the top end of the guide cylinder.
Further, the top of the air guide cylinder is converged and connected to the air outlet in an inclined and upward mode.
In the above technical solution, the air outlet is in a porous plate structure.
In the technical scheme, the safety shell is made of steel, and the outer surface of the safety shell is coated with the anti-corrosion coating.
In the technical scheme, deionized water is filled in the water tank, a water supplementing pipeline is arranged at the upper part of the water tank, and a drainage pipeline is arranged at the lower part of the water tank.
In the technical scheme, the water tank is provided with the liquid level sensor and the temperature sensor.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts capillary force as driving force of liquid, can effectively reduce the influence of ship body inclination, swing and the like on the driving force, and has stable liquid transportation.
2. The invention reduces the arrangement of large-scale equipment such as a heat exchanger, a pump and the like, solves the problem by arranging a thin porous layer on the basis of the existing containment structure, is beneficial to the space configuration of equipment on a ship, reduces the control of active equipment such as the pump, a valve and the like, effectively reduces the possibility of human error and simplifies the design of a measurement and control system.
3. The invention does not need to continuously supply power to the active equipment, and can still play a role in safety protection even if the power supply is lost.
4. The invention takes away heat through the evaporation of water, has higher heat carrying capacity and can save water.
Drawings
FIG. 1 is a schematic diagram of a marine capillary force driven containment heat removal system of the present invention.
In the figure, a 1-water tank, a 1.1-water supplementing pipeline, a 1.2-water draining pipeline, a 2-containment, a 3-porous structure, 3.1-ribs with porous structures, a 4-air guide cylinder, a 4.1-air inlet and a 4.2-gas outlet are shown.
Detailed Description
The invention will now be described in further detail with reference to the drawings and to specific examples.
As shown in fig. 1, the marine capillary force driven containment heat conduction system of the invention comprises a water tank 1, wherein a containment 2 is arranged in the water tank 1, the water tank 1 is arranged around the bottom of the containment, water in the tank 1 provides sufficient water source for cooling the containment, and the water source can be deionized water.
The invention has the following creation points: the outer surface of the containment vessel 2 is provided with a porous structure 3 having capillary driving force to water, and the pores in the porous structure 3 are communicated with each other. The porous structure 3 in the invention is formed by sintering microspherical copper particles and covers the surface of the containment. The porous structure 3 at the lower end of the containment vessel 2 is immersed in the water tank 1, and the tiny porous structure forms a capillary driving force for the water, which is transported from the bottom end of the containment vessel to the top end of the containment vessel. Preferably, the pore size of the porous structure used in the present invention is 10 μm to 500. Mu.m, and the pore size of this size can achieve a better capillary driving force for water. When a water loss accident occurs, the water vapor in the containment vessel 2 transfers heat to the water in the porous structure, and the water in the porous structure is heated and evaporated, so that the heat in the containment vessel 2 is taken away. After the water in the porous structure is evaporated, the porous structure utilizes capillary force to timely convey and supplement the water in the water tank 1 into the porous structure. In order to increase the evaporation area of the porous structure, the heat exchange capacity is increased. The surface of the porous structure is provided with the ribs 3.1 with the porous structure, so that the heat exchange is enhanced.
In order to improve the water evaporation rate in the porous structure 3 and further enhance the heat exchange capacity, an air guide cylinder 4 can be arranged outside the porous structure 3, an air flow channel is formed between the porous structure 3 and the air guide cylinder 4, the bottom end of the air flow channel is provided with an air inlet 4.1, the top end of the air guide cylinder 4 is provided with an air outlet 4.2, when a water loss accident occurs, air in the air flow channel is heated to cause density to rise, flows upwards in the flow channel and is discharged from the air outlet 4.2, and outside air flows into the flow channel through the air inlet 4.1 to promote water evaporation in the porous structure, so that the heat conduction capacity of the system is improved. In addition, in order to maintain the flow velocity of air in the flow passage, the structure of the top of the air guide cylinder can be obliquely upwards converged and connected to the air outlet 4.2, and the structure of the air guide cylinder at the top can be specifically designed to be in a tapered cone shape, as shown in fig. 1, so that the air flow velocity can be favorably improved. As a preferred embodiment, the air outlet 4.2 at the top end of the air guide sleeve may be provided as a perforated plate-like structure which prevents larger substances from entering the air flow passage. The air guide cylinder is made of reinforced concrete, so that radioactive substances in the containment can be shielded, and the threat of external flying objects on the structural integrity of the containment can be effectively resisted.
The containment vessel 2 is a steel containment vessel, and the metal containment vessel has a high heat conductivity coefficient, so that the heat resistance of the inner side and the outer side of the containment vessel is reduced. When a water loss accident occurs, the steam can be quickly condensed. The anti-corrosion coating is coated on two sides of the containment, so that corrosion of the containment can be prevented, long-term stability of structural performance of the containment can be ensured, contact thermal resistance increase caused by corrosion can be avoided, and stability of heat carrying capacity of a containment heat lead-out system is facilitated.
The water tank 1 is also provided with a liquid level sensor and a temperature sensor, when the water level is reduced due to leakage of the water tank or natural evaporation of water, a water level alarm is triggered, water is replenished into the water tank 1 through the water replenishing pipeline 1.1, and when the water level reaches a set value, water replenishing is stopped. When the progress time of the water loss accident is longer, after the water in the water tank is evaporated and consumed, the water supplementing pipeline 1.1 can be used for supplementing a water source, so that the long-term heat conduction of the containment can be ensured. For the water tank maintenance or the requirement of changing water regularly, be provided with drain line 1.2 in the water tank bottom, through the water drainage in the water tank 1, can make things convenient for the maintenance of water tank.
Claims (7)
1. The utility model provides a marine capillary force driven containment heat export system, includes the water tank, and the containment is located in the water tank, its characterized in that: the outer surface of the containment vessel is provided with a porous structure with capillary driving force for water, and holes in the porous structure are communicated with each other; the porous structure is formed by sintering microspherical copper particles, and the pore diameter of the porous structure is 10-500 mu m; an air guide cylinder is arranged on the periphery of the porous structure, an air flow channel is formed between the air guide cylinder and the porous structure, and an air outlet is formed in the top end of the guide cylinder.
2. The marine capillary force driven containment heat extraction system of claim 1, wherein: the surface of the porous structure is provided with ribs with a porous structure.
3. The marine capillary force driven containment heat extraction system of claim 1, wherein: the top of the air guide cylinder is obliquely upwards converged and connected to the air outlet.
4. A marine capillary force driven containment heat extraction system according to claim 1 or 3, wherein: the air outlet is of a porous plate-shaped structure.
5. The marine capillary force driven containment heat extraction system of claim 4, wherein: the containment vessel is made of steel, and the outer surface of the containment vessel is coated with an anti-corrosion coating.
6. The marine capillary force driven containment heat extraction system of claim 5, wherein: deionized water is filled in the water tank, a water supplementing pipeline is arranged at the upper part of the water tank, and a water draining pipeline is arranged at the lower part of the water tank.
7. The marine capillary force driven containment heat extraction system of claim 6, wherein: the water tank is provided with a liquid level sensor and a temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011385448.1A CN112599257B (en) | 2020-12-01 | 2020-12-01 | Marine capillary force driven containment heat export system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011385448.1A CN112599257B (en) | 2020-12-01 | 2020-12-01 | Marine capillary force driven containment heat export system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112599257A CN112599257A (en) | 2021-04-02 |
| CN112599257B true CN112599257B (en) | 2024-03-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011385448.1A Active CN112599257B (en) | 2020-12-01 | 2020-12-01 | Marine capillary force driven containment heat export system |
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| Country | Link |
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| CN (1) | CN112599257B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116899639A (en) * | 2023-06-30 | 2023-10-20 | 上海金鑫生物科技有限公司 | Microfluidic device and application thereof |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4035545A (en) * | 1976-06-21 | 1977-07-12 | Albert Bonevich Ivanov | Heat-resistant porous structural material |
| JP2002214381A (en) * | 2000-12-07 | 2002-07-31 | Korea Atom Energ Res Inst | Method and device for removing residual heat in liquid metal reactor using thermosyphon |
| CN202816402U (en) * | 2012-06-13 | 2013-03-20 | 中国核动力研究设计院 | Passive containment spraying-submerged cooling system |
| CN103050155A (en) * | 2012-11-06 | 2013-04-17 | 国家核电技术有限公司 | Accident relieving device as well as manufacturing method, nuclear power station pressure container and accident relieving method of accident relieving device |
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| CN111863293A (en) * | 2020-08-24 | 2020-10-30 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Injection system suitable for ocean nuclear power platform |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100624877B1 (en) * | 2002-07-08 | 2006-09-18 | 한국과학기술연구원 | Surface treatment method for wet surface Heat exchangers to improve surface wettability |
-
2020
- 2020-12-01 CN CN202011385448.1A patent/CN112599257B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4035545A (en) * | 1976-06-21 | 1977-07-12 | Albert Bonevich Ivanov | Heat-resistant porous structural material |
| JP2002214381A (en) * | 2000-12-07 | 2002-07-31 | Korea Atom Energ Res Inst | Method and device for removing residual heat in liquid metal reactor using thermosyphon |
| CN103295655A (en) * | 2012-02-29 | 2013-09-11 | 上海核工程研究设计院 | Water logging and air cooling combined passive containment cooling system and method |
| CN202816402U (en) * | 2012-06-13 | 2013-03-20 | 中国核动力研究设计院 | Passive containment spraying-submerged cooling system |
| JP2014029300A (en) * | 2012-07-31 | 2014-02-13 | Kandenko Co Ltd | Method and apparatus for maintaining nuclear reactor safety when power is lost and sea water cooling is not possible |
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| CN104361914A (en) * | 2014-11-19 | 2015-02-18 | 中科华核电技术研究院有限公司 | Passive safe cooling system |
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| CN111504106A (en) * | 2020-05-15 | 2020-08-07 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Plane liquid cooling heat pipe |
| CN111863293A (en) * | 2020-08-24 | 2020-10-30 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Injection system suitable for ocean nuclear power platform |
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| CN112599257A (en) | 2021-04-02 |
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