CN206116027U - Active containment cooling system of high heat transfer non - - Google Patents
Active containment cooling system of high heat transfer non - Download PDFInfo
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- CN206116027U CN206116027U CN201621002143.7U CN201621002143U CN206116027U CN 206116027 U CN206116027 U CN 206116027U CN 201621002143 U CN201621002143 U CN 201621002143U CN 206116027 U CN206116027 U CN 206116027U
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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 utility model discloses an active containment cooling system of high heat transfer non -, include: the containment is equipped with the fin on the inboard lateral wall of containment and/or the outside lateral wall, outer wall and fin formation liquid film that liquid among the containment cooling system sprayed the containment cool off the containment, and the air passes through to pass through in proper order behind the air inlet corridor in wind -guiding verandah and the wind -guiding to to discharge from the air outlet by the heat that the liquid film transmitted wherein. Implement the utility model discloses an active containment cooling system of high heat transfer non - can improve liquid film heat convection and air heat convection's efficiency by a wide margin, help premature containment pressure peak after the suppression accident, improved the ability that extreme incident was resisted to the containment, show improvement heat transfer power, promoting fail safe nature.
Description
Technical field
This utility model is related to nuclear power field, more particularly to a kind of high heat exchange Passive containment cooling system.
Background technology
Containment cooling water tank is relied on after existing nuclear power plant's accident（PCCWST）Interior water at low temperature is to steel containment vessel outside wall surface
Implement, in the passive mode of spraying cooling, to be primarily present following technical problem：
1st, the structure of huge water storage tank is carried at the top of containment, which is in extreme events such as strong earthquakes, Hai Xiao, tornados
In easily cause structural deterioration and lose security function.
2nd, by water membrane being set up in steel containment vessel outside wall surface, carry out heat using the evaporation and convection current of moisture film and remove
Passive mode, liquid film is less efficient with the heat convection of steel containment vessel；If liquid film can not in steel containment vessel outer surface
Evaporating completely, vertically downstream to steel containment vessel bottom directly will be excluded, and these do not have the liquid of evaporating completely
Heat is not fully absorbed, so as to result in the waste of cooling water；Liquid film can not cover 100% steel containment vessel outer surface, if
Increase spray flow, liquid film coverage rate can be increased, but increase spray flow can but cause more cooling water wastes.
3rd, the water capacity in PCCWST water tanks only meets the short time（For example：72 hours, containment structure was not enough to undertake more
Big load）Functional requirement.And in the case of extreme natural calamity, under such as Fukushima nuclear accident situation, interior for a long time complete
Complete to lose factory's internal and external exchange power supply, after the water tank emptying of PCCWST, no power source drive recirculation pump is to its moisturizing.Such as
Fruit relies only on cross-ventilated mode and cools down in containment outside wall surface, is not enough to discharge waste heat in heap, and containment inner high voltage can be made
Into containment rupture, the consequence that can cause the accident drastically deteriorates.
4th, after the top Water in Water Tanks for spray is finished, air intake and the sky before air outlet slit can only be relied on
Flow of air is taking away the heat of containment outside wall surface, but the poor ability of air band heat, and needs improve which using certain technology
Exchange capability of heat.
5th, it is to need most to obtain effectively cold due to often reaching pressure peak, i.e. accident initial stage at the accident initial stage in containment
But period, and the PCCS obtained based on experiment set up the time delay of moisture film up to 337 seconds, the promptness of heat exchange is not high；Together
When, according to the experiment of Westinghouse Electric, the coverage rate of moisture film foundation, heat removal capacity are sufficiently verified so far.
As can be seen here, it is that the further hoisting power of passive PWR nuclear power plant is faced that containment thermal capacity and heat are removed
Bottleneck problem, if using method to original design simple dilatation, for example：Increase containment volume and surface area, increase cold
But the mode such as water storage bin volume, can not meet it is high-power under the conditions of functional requirement, be unfavorable for power plant's macroeconomic type and
Safety.
Utility model content
Technical problem to be solved in the utility model is, there is provided a kind of high heat exchange Passive containment cooling system,
The efficiency of liquid film heat convection and cross-ventilation heat exchange can be greatly improved；Contribute to the containment pressure of early stage after suppression accident
Peak value, improves the ability that containment resists extreme event;Heat exchange power is significantly improved, security reliability is lifted.
In order to solve above-mentioned technical problem, it is cold that embodiment of the present utility model provides a kind of high heat exchange passive containment
But system, including：Containment, the inside side walls and/or outside side wall of containment are provided with fin；It is arranged on outside containment
Air deflection plate, concrete shielding and air are provided between the outer wall of concrete shielding, concrete shielding and containment
Formed between deflection plate to the wind-guiding verandah to water conservancy diversion is carried out into the air between concrete shielding and containment outer wall,
The wind-guiding middle corridor being connected with wind-guiding verandah is formed between air deflection plate and containment outer wall；Opened on concrete shielding respectively
If air intake and air outlet slit；And the containment cooling system of containment over top is arranged on, wherein：Containment is cooled down
Liquid spray in system forms liquid film to the outside wall surface and fin of containment and containment is cooled down, and air is entered by air
Wind-guiding verandah and wind-guiding middle corridor are sequentially passed through after mouthful, and heat therein will be delivered to by liquid film and discharged from air outlet slit.
Wherein, fin is set to multi-disc, and multi-disc fin equidistantly equably surround and is arranged on the outside side wall of containment.
Wherein, multi-disc fin is arranged as vertical direction or inclines certain angle.
Wherein, through hole is offered on fin, so that the fluid or air between the formed runner of different fins can be with horizontal stroke
To flowing.
Wherein, containment cooling system includes：Be arranged on containment over top containment cooling water tank and with safety
The spray piping that shell cooling water tank is connected, the water in containment cooling water tank can be by the tops of spray piping spray to containment
Portion.
Wherein, containment is the sealed shell of tank by made by stainless steel material.
High heat exchange Passive containment cooling system provided by the utility model, has the advantages that：
Firstth, the liquid spray in containment chiller carries out cold to the outside wall surface formation liquid film of containment to containment
But, air sequentially passes through wind-guiding verandah and wind-guiding middle corridor after air intake, and will by liquid film be delivered to heat therein from
Air outlet slit is discharged.According to Conventional wisdom, wing shell-type heat-transfer surface can improve 3 ~ 5 times with respect to the coefficient of heat transfer of shell-type heat-transfer surface,
Therefore, the either heat convection of the heat convection or air of liquid, exchange capability of heat will be greatly promoted.After 72 hours, only
By air and the heat convection of steel containment vessel outside wall surface, it is possible to take away heat in containment.
Second, the inside side walls and/or outside side wall of containment are provided with fin, it is possible to achieve the guiding of liquid film is made
With, so as to increase steel containment vessel outside wall surface liquid film coverage rate, can greatly improve liquid film heat convection and cross-ventilation heat exchange
Efficiency；The lifting of liquid film coverage rate and the raising of liquid film heat exchange efficiency, contribute to the containment pressure of early stage after suppression accident
Peak value, improves the ability that containment resists extreme event, so as to improve the safety and reliability of nuclear power plant.
3rd, fin can carry out water conservancy diversion and strengthen heat exchange, after accurate flow design is carried out, fluid can be avoided to flow to
Also it is not vaporized completely during containment bottom, i.e., does not have the waste of fluid.The volume of water tank at the top of containment is greatly reduced, greatly
Width improves the strength and stability of npp safety shell structure.
4th, heat transfer area is increased due to fin, heat transfer effect is enhanced, so even is the water row of top water tank
Situation that is empty, can only relying on air band heat, system of the present utility model can still provide stronger exchange capability of heat.
5th, whole passive technology is realized, without the need for manually operation, DC source or pump, for a long time need not after accident
Power supply.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, in the premise for not paying creative work
Under, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the structural representation of the high heat exchange Passive containment cooling system of this utility model embodiment.
Fig. 2 is the vertical view that the containment of the high heat exchange Passive containment cooling system of this utility model embodiment arranges fin
Structural representation.
Specific embodiment
Technical scheme in this utility model embodiment carries out clear, complete description, it is clear that described embodiment is only
Only it is a part of embodiment of this utility model, rather than the embodiment of whole.Based on the embodiment in this utility model, this area
The every other embodiment obtained under the premise of creative work is not made by those of ordinary skill, belongs to this utility model
The scope of protection.
With reference to shown in referring to Fig. 1-Fig. 2, it is the embodiment one of the high heat exchange Passive containment cooling system of this utility model.
High heat exchange Passive containment cooling system in the present embodiment includes：Steel containment vessel 1, steel containment vessel 1
Inside side walls and/or outside side wall are provided with fin 11；The concrete shielding 2 being arranged on outside steel containment vessel 1, concrete
Air deflection plate 3 is provided between the outer wall of screen layer 2 and steel containment vessel 1；Between concrete shielding 2 and air deflection plate 3
Formed to wind-guiding verandah 3a to water conservancy diversion is carried out into the air between 1 outer wall of concrete shielding 2 and steel containment vessel, it is empty
The wind-guiding middle corridor 3b being connected with wind-guiding verandah 3a is formed between 1 outer wall of gas deflection plate 2 and steel containment vessel；Concrete shielding
Open up air intake 21 and air outlet slit 22 on 2 respectively；And it is arranged on the containment cooling dress of 1 over top of steel containment vessel
4 are put, wherein：Liquid in containment chiller 4 sprays and liquid film pair is formed in the outside wall surface and fin 11 of steel containment vessel 1
Steel containment vessel 1 is cooled down, and air, and will be by by sequentially passing through wind-guiding verandah 3a and wind-guiding middle corridor 3b after air intake 21
Liquid film is delivered to heat therein and discharges from air outlet slit 22.
When being embodied as, steel containment vessel 1 is the sealed shell of tank by made by stainless steel material.Housing is arranged to into steel plate,
Disclosure satisfy that passive nuclear plant containment suppresses pressure, contains the functional requirements such as radioactive substance.Steel containment vessel 1 it is main
Function is to contain quality and the energy that reactor is discharged after accident（Vapor）, and contain radioactive substance, avoid
Which carries out uncontrollable discharge to atmospheric environment.
Further, the inside side walls and/or outside side wall of steel containment vessel 1 are provided with fin 11, in the present embodiment are
The outside side wall of steel containment vessel 1, fin 11 are set to multi-disc, and equidistant equably the surrounding of multi-disc fin 11 is arranged in steel safety
On the outside side wall of shell 1.Wherein：Fin 11 can adopt multiple structural forms and arrangement, for example：Multi-disc fin 11 is arranged as
Vertical direction inclines certain angle, for another example：Through hole is offered on fin 11, so that between the formed runner of different fins
Fluid or air can be with horizontal mobility.
The inside side walls and/or outside side wall of steel containment vessel 1 are provided with the effect of fin 11：Fin 11 can be to peace
The liquid sprayed in 1 outside wall surface of steel containment vessel in full shell chiller 4 carries out water conservancy diversion and strengthens heat exchange, is carrying out accurately
After flow design, liquid can also be avoided also not to be vaporized completely when flowing to 1 bottom of steel containment vessel, i.e., do not have the wave of liquid
Take.Also therefore, it can greatly reduce the volume of 1 top water tank of steel containment vessel, greatly improve the strong of npp safety shell structure
Degree and stability.
Concrete shielding 2 is arranged on the outside of steel containment vessel 1, i.e., outer one week around steel containment vessel 1.Concrete shield
Layer 2 Main Function be：Opposing external impact, support safety top shell chiller 4 and shielding radioactivity.
Specifically, the upper end position in 2 vertical component of concrete shielding arranges air intake 21, the master of air intake 21
The entrance that air is entered between steel containment vessel 1 and concrete shielding 2 is functioned as.At the top of concrete shielding 2
Draft outlet 22 is set, the filtering emission of air is carried out.
Further, air deflection plate 3 is arranged between the outer wall of concrete shielding 2 and steel containment vessel 1, and which is round
Cylindrical, i.e., outer one week around steel containment vessel 1, air deflection plate 3 has the effect for realizing air conducting.Concrete shielding 2
Formed and air deflection plate 3 between to leading into the air between 1 outer wall of concrete shielding 2 and steel containment vessel
Wind-guiding verandah 3a of stream, is formed in the wind-guiding being connected with wind-guiding verandah 3a between 1 outer wall of air deflection plate 2 and steel containment vessel
Corridor 3b.By arranging wind-guiding verandah 3a and wind-guiding middle corridor 3b, Natural Circulation can be strengthened.
Containment cooling system 4 is arranged on the top of steel containment vessel 1, carries out structural support by concrete shielding 2.Peace
Full shell chiller 4 includes：Be arranged on 1 over top of steel containment vessel containment cooling water tank 41 and with containment cooling water
The spray piping 42 that case 41 is connected, the water in containment cooling water tank 41 can pass through the spray of spray piping 42 to the top of containment
Portion, is oriented to by fin 11 when these water flow downward, and forms liquid film in the outside wall surface of steel containment vessel 1.
Height provided by the utility model exchanges heat Passive containment cooling system in the specific implementation, passive containment
Cooling system is not used under nuclear power plant's accidental conditions, only automatically engages use after accident if necessary.
Once generation accident, in reactor energy and heat as water vapor, by the broken of primary Ioops or secondary circuit
Mouth is discharged in steel containment vessel 1, causes temperature and pressure rise in steel containment vessel 1.Vapor is in 1 inwall of steel containment vessel
Face condenses, and transfers heat to steel containment vessel.1 inner high voltage force signal of steel containment vessel triggering containment cooling water tank, 41 bottom
Valve on connected spray piping 42, valve are opened, and the water in containment cooling water tank 41 is arrived by the spray of spray piping 42
The top of containment, is oriented to by fin 11 when these water flow downward, and forms liquid film, and liquid film is to 1 outer wall of steel containment vessel
Face is cooled down.Air enters wind-guiding verandah 3a by air intake 21, flows downward here, reaches air deflection plate 3
During bottom, baffling upwards, is flowed up in wind-guiding middle corridor 3b, is absorbed liquid film here and is passed to its heat, that is, is heated, plus
Air after heat is automatically continued and is flowed up, and is discharged by draft outlet 22.So, realize from vapor, steel containment vessel
The heat transfer of internal face, steel containment vessel, steel containment vessel outside wall surface, liquid film and air, that is, realize for containment
Passive cooling.
High heat exchange Passive containment cooling system provided by the utility model, has the advantages that：
Firstth, in existing Passive containment cooling system, huge water storage tank is carried at the top of containment, and this practicality
In new, heat exchange efficiency is greatly improved, and the water in water tank can be fully utilized, such that it is able to reduce the need of cooling water
Ask, and then reduce the volume that top carries water storage tank.
Secondth, the liquid spray in containment chiller carries out cold to the outside wall surface formation liquid film of containment to containment
But, air sequentially passes through wind-guiding verandah and wind-guiding middle corridor after air intake, and will by liquid film be delivered to heat therein from
Air outlet slit is discharged.Fin is obviously improved cross-ventilated heat exchange efficiency, after 72 hours, only relies on air and steel safety
The heat convection of shell outside wall surface, it is possible to take away heat in containment.
3rd, the inside side walls and/or outside side wall of containment are provided with fin, it is possible to achieve the guiding of liquid film is made
With, so as to increase steel containment vessel outside wall surface liquid film coverage rate, can greatly improve liquid film heat convection and cross-ventilation heat exchange
Efficiency；The lifting of liquid film coverage rate and the raising of liquid film heat exchange efficiency, contribute to the containment pressure of early stage after suppression accident
Peak value, improves the ability that containment resists extreme event, so as to improve the safety and reliability of nuclear power plant.
4th, fin can carry out water conservancy diversion and strengthen heat exchange, after accurate flow design is carried out, fluid can be avoided to flow to
Also it is not vaporized completely during containment bottom, i.e., does not have the waste of fluid.The volume of water tank at the top of containment is greatly reduced, greatly
Width improves the strength and stability of npp safety shell structure.
5th, whole passive technology is realized, without the need for manually operation, DC source or pump, for a long time need not after accident
Power supply.
Claims (6)
1. a kind of high heat exchange Passive containment cooling system, it is characterised in that include：
Containment, the inside side walls and/or outside side wall of the containment are provided with fin；
Between the outer wall of the concrete shielding being arranged on outside the containment, the concrete shielding and the containment
Air deflection plate is provided with, is formed between the concrete shielding and the air deflection plate to into the concrete screen
Covering the air between layer and the containment outer wall carries out the wind-guiding verandah of water conservancy diversion, outside the air deflection plate and the containment
The wind-guiding middle corridor being connected with the wind-guiding verandah is formed between wall；
Open up air intake and air outlet slit on the concrete shielding respectively；And
The containment cooling system of the containment over top is arranged on, wherein：
Liquid in the containment cooling system sprays and liquid film pair is formed in the outside wall surface and the fin of the containment
The containment is cooled down, and air sequentially passes through the wind-guiding verandah and the wind-guiding middle corridor after the air intake,
And heat therein will be delivered to by the liquid film and discharge from the air outlet slit.
2. heat exchange Passive containment cooling system as claimed in claim 1 high, it is characterised in that the fin is set to many
Piece, the multi-disc fin equidistantly equably surround and are arranged on the outside side wall of the containment.
3. heat exchange Passive containment cooling system as claimed in claim 2 high, it is characterised in that the multi-disc fin arrangement
For the certain angle of vertical direction or inclination.
4. the high heat exchange Passive containment cooling system as described in any one of claim 1-3, it is characterised in that the fin
On offer through hole.
5. the high heat exchange Passive containment cooling system as described in any one of claim 1-3, it is characterised in that the safety
Shell cooling system includes：It is arranged on the containment cooling water tank of containment over top and is connected with the containment cooling water tank
Spray piping, the water in the containment cooling water tank can pass through the spray piping spray to the containment top.
6. heat exchange Passive containment cooling system as claimed in claim 1 high, it is characterised in that the containment is by not
Sealed shell of tank made by rust Steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621002143.7U CN206116027U (en) | 2016-08-31 | 2016-08-31 | Active containment cooling system of high heat transfer non - |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621002143.7U CN206116027U (en) | 2016-08-31 | 2016-08-31 | Active containment cooling system of high heat transfer non - |
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ID=58515733
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| CN201621002143.7U Active CN206116027U (en) | 2016-08-31 | 2016-08-31 | Active containment cooling system of high heat transfer non - |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123448A (en) * | 2017-06-09 | 2017-09-01 | 四川行之智汇知识产权运营有限公司 | A kind of containment cooling system for improving cooling agent utilization rate |
| CN107256727A (en) * | 2017-06-09 | 2017-10-17 | 四川行之智汇知识产权运营有限公司 | A kind of nuclear reactor cooling system |
| CN107274938A (en) * | 2017-06-09 | 2017-10-20 | 四川行之智汇知识产权运营有限公司 | A kind of containment cooling device |
| 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 |
| CN112599257A (en) * | 2020-12-01 | 2021-04-02 | 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) | Marine capillary force driven containment heat exporting system |
| CN113283189A (en) * | 2021-04-30 | 2021-08-20 | 西安交通大学 | Cross-dimension coupling analysis method for containment and passive containment air cooling system |
| RU2763943C1 (en) * | 2021-05-28 | 2022-01-11 | Общество с ограниченной ответственностью "Корпорация Акционерной Компании "Электросевкавмонтаж" | Regulating device |
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- 2016-08-31 CN CN201621002143.7U patent/CN206116027U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107123448A (en) * | 2017-06-09 | 2017-09-01 | 四川行之智汇知识产权运营有限公司 | A kind of containment cooling system for improving cooling agent utilization rate |
| CN107256727A (en) * | 2017-06-09 | 2017-10-17 | 四川行之智汇知识产权运营有限公司 | A kind of nuclear reactor cooling system |
| CN107274938A (en) * | 2017-06-09 | 2017-10-20 | 四川行之智汇知识产权运营有限公司 | A kind of containment cooling device |
| CN107256727B (en) * | 2017-06-09 | 2019-04-09 | 安徽科创智慧知识产权服务有限公司 | A kind of nuclear reactor cooling system |
| CN107274938B (en) * | 2017-06-09 | 2019-05-21 | 安徽科创智慧知识产权服务有限公司 | A kind of containment cooling device |
| 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 |
| CN112599257A (en) * | 2020-12-01 | 2021-04-02 | 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) | Marine capillary force driven containment heat exporting system |
| CN112599257B (en) * | 2020-12-01 | 2024-03-15 | 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) | Marine capillary force driven containment heat export system |
| CN113283189A (en) * | 2021-04-30 | 2021-08-20 | 西安交通大学 | Cross-dimension coupling analysis method for containment and passive containment air cooling system |
| CN113283189B (en) * | 2021-04-30 | 2022-07-26 | 西安交通大学 | Cross-dimension coupling analysis method for containment and passive containment air cooling system |
| RU2763943C1 (en) * | 2021-05-28 | 2022-01-11 | Общество с ограниченной ответственностью "Корпорация Акционерной Компании "Электросевкавмонтаж" | Regulating device |
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