CN107564592A - A kind of passive air cooling containment - Google Patents
A kind of passive air cooling containment Download PDFInfo
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- CN107564592A CN107564592A CN201710613106.2A CN201710613106A CN107564592A CN 107564592 A CN107564592 A CN 107564592A CN 201710613106 A CN201710613106 A CN 201710613106A CN 107564592 A CN107564592 A CN 107564592A
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- containment
- air
- passive
- cooled
- metal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The invention belongs to the containment vessel designing technique of nuclear power plant, and in particular to a kind of passive air cooling containment.Its structure includes internal layer metal containment and outer concrete containment, annular space is formed between metal containment and concrete containment, annular space connects air-cooled air intake by ventilation shaft, air-cooled air outlet slit is arranged on the top of the concrete containment, it is provided with the interior air circulation runner of metal containment wall in the inside of the metal containment, so as to form double circulation air flow channel inside and outside metal containment.The present invention improves metal containment internal-external heat exchanger efficiency by constructing containment inside and outside dual circulatory flow, meanwhile, the outlet of air cooling runner can shield the sky scattering effect of pile neutron towards the direction straight up for avoiding face reactor core.
Description
Technical field
The invention belongs to the containment vessel designing technique of nuclear power plant, and in particular to a kind of passive air cooling containment
Structure.
Background technology
Containment is that nuclear power plant prevents last one barrier of the radioactive substance to Environment release, and accident occurs for nuclear power plant
When, the gas of a large amount of HTHPs can be produced, containment temperature, pressure is increased, the complete of last one of the barrier of nuclear power plant will be threatened
Whole property.Npp safety shell employs various active or passive containment cooling system design at present, to discharge containment
Interior heat, including two generation nuclear power plant active spray, the Passive containment cooling system of three generations nuclear power plant etc., make containment
Pressure is less than design load, maintains the integrality of containment barrier.
The designing technique of existing air-cooled containment, typically all it is confined to put air baffle in metal containment peripheral hardware, carrys out structure
Into air circulation runner, such as：" the environment air cooling system and non-with the system of Chinese patent application 201310576926.0
Active containment ", 201210050477.1 " water logging and the air-cooled Passive containment cooling system being combined and methods " institute are public
The technical scheme opened, at these in the prior art, the air inlet of air circulation runner are typically all disposed within containment external shield structure
The top of thing is built, while air outlet slit is straight up, because metal containment does not have neutron shield ability, neutron can be worn in heap
Cross outlet and sky scattering occurs, cause environmental dose to raise.
The content of the invention
The defects of it is an object of the invention to for prior art, there is provided a kind of passive air cooling containment, preventing can
The sky scattering for the pile neutron that can occur, and improve the heat exchange efficiency of passive air natural circulation cooling.
Technical scheme is as follows：A kind of passive air cooling containment, including internal layer metal containment and outer layer mix
Native containment is coagulated, annular space is formed between metal containment and concrete containment, annular space is connected by ventilation shaft
Air-cooled air intake, air-cooled air outlet slit are arranged on the top of the concrete containment, are set in the inside of the metal containment
There is the interior air circulation runner of metal containment wall, so as to be configured to improve the double of heat exchange efficiency inside and outside metal containment
Recirculate air flow channel.
Further, passive air cooling containment as described above, wherein, the direction of the air-cooled air outlet slit is avoided just
To the direction straight up of reactor core, to prevent that neutron passes air-cooled air outlet slit in heap.
Further, the direction of air-cooled air outlet slit is in horizontal direction.
Further, passive air cooling containment as described above, wherein, the air-cooled air outlet slit connection deflector.
Further, passive air cooling containment as described above, wherein, the interior air circulation runner includes being arranged on
Cyclic hardening wall in metal containment above operating platform and the safe girdle corridor below operating platform, in cyclic hardening wall
Air flow channel is formed between safe girdle corridor and the inwall of metal containment.
Further, passive air cooling containment as described above, wherein, the air-cooled air intake is arranged on concrete
The outer ground of containment, the ventilation shaft being connected with air-cooled air intake are embedded in below ground.
Further, passive air cooling containment as described above, wherein, the ventilation shaft and concrete containment
Bottom communicates.
Further, passive air cooling containment as described above, wherein, being provided with the air-cooled air intake prevents
The double-edged fine-toothed comb of foreign matters from being blocked pipeline.
Beneficial effects of the present invention are as follows：Passive air cooling containment provided by the present invention, by constructing containment
Inside and outside dual circulatory flow, air flow in containment can be promoted, accelerate high-temperature gas and steel is flowed through by inner loop runner
Containment inner surface, while the ventilation shaft for being embedded in below ground has certain cooling effect to the air for entering pipeline, drops
The outer gas temperature of low metal containment, so as to improve metal containment internal-external heat exchanger efficiency.Meanwhile the outlet direction of air cooling runner is kept away
The direction straight up of face reactor core is opened, the sky scattering effect of pile neutron can be shielded.
Brief description of the drawings
Fig. 1 is the structural representation of the passive air cooling containment of the present invention.
In figure, 1- annular spaces, 2- internal layer metal containments, 3- outer concrete containments, the air-cooled air intakes of 4-, 5- wind
Cold-air vent, 6- ventilation shafts, 7- deflectors, 8- cyclic hardening walls, operating platform in 9- containments, the safe girdle corridors of 10-,
11- ground
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
The invention provides a kind of passive air cooling containment design, as shown in figure 1, being related to as air air cooling stream
The annular space 1 in road, the internal layer metal containment 2 and outer concrete containment 3 of annular space are formed, connect the He of annular space 1
The ventilation shaft 6 of air-cooled air intake 4, air-cooled air outlet slit 5 are arranged at the top of outer concrete containment.The design further relates to
Interior air circulation runner in metal containment, include the cyclic hardening wall 8 of the top of operating platform 9, and the safe girdle of lower section
Corridor 10, air flow channel is formed between cyclic hardening wall 8 and safe girdle corridor 10 and the inwall of metal containment 2.The present invention is for wind
The design of cold-air vent 5, the direction straight up of face reactor core is avoided, can prevent in heap that neutron passes air-cooled air and go out
Mouthful.
Embodiment
As shown in figure 1, passive air cooling containment includes internal layer metal containment 2 and outer concrete containment 3, in steel
Annular space 1 is formed between containment 2 and concrete containment 3, annular space 1 connects air-cooled air by ventilation shaft 6 and entered
Mouth 4, air-cooled air outlet slit 5 is arranged on the top of the concrete containment, is provided with steel in the inside of the metal containment 2
The interior air circulation runner of containment wall, it is empty so as to be configured to improve the double circulation of heat exchange efficiency inside and outside metal containment
Flow channel.
In the design of the present invention, the direction of the air-cooled air outlet slit 5 avoids the direction straight up of face reactor core, with
Prevent that neutron passes air-cooled air outlet slit 5 in heap.As a kind of specific structure design, the air-cooled air outlet slit 5 of the present embodiment
Direction in horizontal direction.Those skilled in the art is it should be understood that the direction of air-cooled air outlet slit might not
Can also there is certain angle with horizontal direction, or air outlet slit is designed to bending strictly in horizontal direction
Etc. different structure type, as long as can prevent that neutron passes in heap.In order that circulation air can be smoothly from air-cooled
Air outlet slit flows out, and the air-cooled air outlet slit 5 connects deflector 7, and circulation air is imported into air-cooled air by deflector 7 and gone out
Mouthful.
In the present embodiment, the interior air circulation runner in metal containment includes being arranged on operating platform 9 in metal containment
The cyclic hardening wall 8 of top and the safe girdle corridor 10 below operating platform 9, in cyclic hardening wall 8 and safe girdle corridor
Air flow channel is formed between 10 and the inwall of metal containment 2.The upper end level of cyclic hardening wall 8 can be with metal containment side wall
It is highly basically identical.
In the present embodiment, the air-cooled air intake 4 is arranged on the ground 11 outside concrete containment 3, air-cooled
Air intake 4 connects ventilation shaft 6, and whole ventilation shaft 6 is embedded in ground below 11, because below ground temperature is relatively low
(particularly summer), so there is certain cooling effect to the air for entering ventilation shaft.The ventilation shaft 6 and concrete
The bottom of containment 3 communicates.Double-edged fine-toothed comb is covered on the air-cooled air intake 4, to prevent foreign matters from being blocked ventilation shaft.
The present invention is after nuclear power plant's generation accident, as high temperature and high pressure gas caused by accident discharge, air in containment
Pressure and temp rises, and dual air circulation can be formed inside and outside containment.As atmospheric temperature rises in containment, pass through steel
Containment heat conduction rises gas temperature in annular space, and density declines, and density contrast is formed with the atmospheric density in environment,
Upward driving force is produced under gravity, gas in annular space is increased.Air enters from environment from air-cooled air intake
Enter ventilation shaft, flow into annular space bottom, rise with gas in annular space, environment, shape are flowed out to from air-cooled air outlet slit
Circulated into extraneous air.In the near wall runner and lower section ring corridor formed in containment above operating platform by cyclic hardening wall
Gas is cooled down by metal containment, and temperature declines, while density rises, and density contrast is formed with the high-temperature gas inside containment,
Downward driving force is produced under Action of Gravity Field, makes the gas above operating platform near wall runner and lower section ring corridor in containment
Flow downward, into containment bottom, and the high-temperature gas in containment is near above operating platform out of top inflow containment
Wall runner, form the circulation of containment inner air.Heat occurs for the normal temperature air of high-temperature gas and outside on the inside of metal containment
Exchange, heat in containment is discharged, and the dual air circulation inside and outside metal containment can then improve the heat exchange of metal containment
Efficiency.
It should be noted that what above-mentioned specific embodiment was merely exemplary, under the above-mentioned teaching of the present invention, this area
Technical staff can carry out various improvement and deformation on the basis of above-described embodiment, and these are improved or deformation falls at this specially
In the protection domain of profit.It will be understood by those skilled in the art that specific descriptions above are intended merely to explain the purpose of the present invention,
It is not intended to limit the present invention.Protection scope of the present invention is limited by claim and its equivalent.
Claims (8)
1. a kind of passive air cooling containment, including internal layer metal containment (2) and outer concrete containment (3), pacify in steel
Annular space (1) is formed between shell (2) and concrete containment (3) entirely, it is characterised in that：Annular space (1) passes through ventilation duct
Road (6) connects air-cooled air intake (4), and air-cooled air outlet slit (5) is arranged on the top of the concrete containment (3), in institute
The inside for stating metal containment (2) is provided with the interior air circulation runner of metal containment wall, so as to inside and outside in metal containment (2)
It is configured to improve the double circulation air flow channel of heat exchange efficiency.
2. passive air cooling containment as claimed in claim 1, it is characterised in that：The court of the air-cooled air outlet slit (5)
To the direction straight up for avoiding face reactor core, to prevent that neutron passes air-cooled air outlet slit in heap.
3. passive air cooling containment as claimed in claim 2, it is characterised in that：The direction of air-cooled air outlet slit (5) is in
Horizontal direction.
4. the passive air cooling containment as described in any one in claim 1-3, it is characterised in that：The air-cooled air
Export (5) connection deflector (7).
5. passive air cooling containment as claimed in claim 1, it is characterised in that：The interior air circulation runner includes setting
Put the cyclic hardening wall (8) in metal containment above operating platform (9) and the safe girdle corridor below operating platform
(10) air flow channel, is formed between the inwall of metal containment in cyclic hardening wall (8) and safe girdle corridor (10).
6. passive air cooling containment as claimed in claim 1, it is characterised in that：The air-cooled air intake (4) is set
The ground outside concrete containment, the ventilation shaft (6) being connected with air-cooled air intake (4) are embedded in below ground.
7. passive air cooling containment as claimed in claim 6, it is characterised in that：The ventilation shaft (6) and concrete
The bottom of containment (3) communicates.
8. passive air cooling containment as claimed in claim 6, it is characterised in that：On the air-cooled air intake (4)
Provided with the double-edged fine-toothed comb for preventing foreign matters from being blocked pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710613106.2A CN107564592B (en) | 2017-07-25 | 2017-07-25 | Passive air-cooling containment vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710613106.2A CN107564592B (en) | 2017-07-25 | 2017-07-25 | Passive air-cooling containment vessel |
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| Publication Number | Publication Date |
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| CN107564592A true CN107564592A (en) | 2018-01-09 |
| CN107564592B CN107564592B (en) | 2021-08-24 |
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| CN201710613106.2A Active CN107564592B (en) | 2017-07-25 | 2017-07-25 | Passive air-cooling containment vessel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108520785A (en) * | 2018-06-19 | 2018-09-11 | 中国科学院上海应用物理研究所 | Passive residual heat removal system and residual heat removal method for molten salt reactor |
| CN108682461A (en) * | 2018-05-15 | 2018-10-19 | 中国核电工程有限公司 | A kind of passive air cooling system of containment for small-sized heap |
| CN112951457A (en) * | 2021-03-05 | 2021-06-11 | 哈尔滨工程大学 | PCS long-term heat exchange water tank with parallel channels |
| CN113035388A (en) * | 2021-03-05 | 2021-06-25 | 哈尔滨工程大学 | Simple and efficient PCS long-term cooling water tank |
| CN113035387A (en) * | 2021-03-05 | 2021-06-25 | 哈尔滨工程大学 | PCS (Power distribution System) long-term cooling water tank capable of operating efficiently |
| CN114334192A (en) * | 2021-11-17 | 2022-04-12 | 中国核电工程有限公司 | Passive residual heat removal device of microminiature horizontal reactor |
| WO2024164504A1 (en) * | 2023-02-07 | 2024-08-15 | 上海交通大学 | Nuclear power station double-layer containment structure for passive air cooling, and nuclear power station using same |
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| CN106128526A (en) * | 2016-08-10 | 2016-11-16 | 长江勘测规划设计研究有限责任公司 | A kind of ellipsoid formula underground nuclear power station containment system |
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| EP0393805B1 (en) * | 1989-04-21 | 1994-09-21 | Westinghouse Electric Corporation | Passive containment cooling apparatus and method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108682461A (en) * | 2018-05-15 | 2018-10-19 | 中国核电工程有限公司 | A kind of passive air cooling system of containment for small-sized heap |
| CN108682461B (en) * | 2018-05-15 | 2023-08-15 | 中国核电工程有限公司 | Containment passive air cooling system for small stacks |
| CN108520785A (en) * | 2018-06-19 | 2018-09-11 | 中国科学院上海应用物理研究所 | Passive residual heat removal system and residual heat removal method for molten salt reactor |
| CN108520785B (en) * | 2018-06-19 | 2023-07-28 | 中国科学院上海应用物理研究所 | Passive waste heat discharging system and waste heat discharging method for molten salt reactor |
| CN112951457A (en) * | 2021-03-05 | 2021-06-11 | 哈尔滨工程大学 | PCS long-term heat exchange water tank with parallel channels |
| CN113035388A (en) * | 2021-03-05 | 2021-06-25 | 哈尔滨工程大学 | Simple and efficient PCS long-term cooling water tank |
| CN113035387A (en) * | 2021-03-05 | 2021-06-25 | 哈尔滨工程大学 | PCS (Power distribution System) long-term cooling water tank capable of operating efficiently |
| CN113035388B (en) * | 2021-03-05 | 2023-11-17 | 哈尔滨工程大学 | Succinct efficient PCS long-term cooling water tank |
| CN114334192A (en) * | 2021-11-17 | 2022-04-12 | 中国核电工程有限公司 | Passive residual heat removal device of microminiature horizontal reactor |
| WO2024164504A1 (en) * | 2023-02-07 | 2024-08-15 | 上海交通大学 | Nuclear power station double-layer containment structure for passive air cooling, and nuclear power station using same |
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| CN107564592B (en) | 2021-08-24 |
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