CN104934076A - Two-stage suppression containment vessel and suppression pool system thereof - Google Patents
Two-stage suppression containment vessel and suppression pool system thereof Download PDFInfo
- Publication number
- CN104934076A CN104934076A CN201510335985.8A CN201510335985A CN104934076A CN 104934076 A CN104934076 A CN 104934076A CN 201510335985 A CN201510335985 A CN 201510335985A CN 104934076 A CN104934076 A CN 104934076A
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- constrain
- containment
- well
- hydrospace
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/004—Pressure suppression
- G21C9/012—Pressure suppression by thermal accumulation or by steam condensation, e.g. ice condensers
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
-
- 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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- 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 discloses a suppression pool system of a two-stage suppression containment vessel. The suppression pool system comprises a first wet well and a second wet well. The first wet well comprises a first gas space, a first water space connected with the first gas space, a third water space connected with the first gas space, and a suppression pipe. The second wet well comprises a second gas space and a second water space connected with the second gas space, wherein the second water space is kept in liquid communication with the third water space of the first wet well. When pressure in a containment vessel dry well rapidly rises, mixed gas in the containment vessel dry well enters the first water space through a suppression pipe to be condensed, and the mixed gas which is not condensed can enter the third water space and the second water space to be unceasingly condensed. The invention further discloses the two-stage suppression containment vessel. When the two-stage suppression containment vessel and the suppression pool system of the two-stage suppression containment vessel are implemented, operation is achieved in a complete non-kinetic-energy mode, the condensation efficiency of steam can be effectively improved, the suppression effect can be improved, and safety can be enhanced.
Description
Technical field
The present invention relates to nuclear power field, particularly relate to the constrain containment of the two-stage applied in a kind of presurized water reactor 3 ~ 2,000,000 kilowatts of electric power ranks or boiling-water reactor nuclear power plant and constrain pond system thereof.
Background technology
In presurized water reactor or boiling-water reactor, when occurring high energy pipeline breaking, the fluid mass discharged by cut and energy will cause containment pressure to raise fast.Raise fast for suppressing pressure, constrain pond is provided with in containment, when high-energy fluid enter containment dry-well cause dry-well pressure to raise time, because pressure reduction mixed gas enters constrain pond, enter the steam generation condensation in constrain pond, non-condensable gas enters headroom, constrain pond, and constrain pond raises pressure in containment obvious inhibition.
Mainly there is following technical matters in the existing containment with constrain function:
1, traditional treatment facility, after mixed gas enters constrain pond, although a large amount of steam generations condensation, still has some vapor to enter into the headroom of wet-well, reduces constrain effect.
2, for the containment that free space is less, existing constrain pond system is unreasonable, and under accident, containment Stress control effect is not fully up to expectations.
Summary of the invention
Technical matters to be solved by this invention is, provide containment and constrain pond system thereof that a kind of two-stage is constrain, the mode realizing complete non-kinetic operates, and effectively can improve the condensation efficiency of steam, improve constrain effect, strengthens the security of nuclear power plant; Effectively can realize the containment Stress control under accident, and the designing requirement of containment can be reduced further.
In order to solve the problems of the technologies described above, The embodiment provides the constrain containment of a kind of two-stage constrain pond system, containment pressure is suppressed to raise fast in order to adopt non-enabling fashion, comprise: the first wet-well, first wet-well has the first headroom, the first hydrospace connected with the first headroom respectively and the 3rd hydrospace, constrain pipe, the constrain pipe import that constrain pipe has in order to be connected with containment dry-well exports with the constrain pipe in order to be connected with the first hydrospace of the first wet-well; Second wet-well, the second hydrospace that second wet-well has the second headroom, connects with the second headroom, 3rd hydrospace of the second hydrospace and the first wet-well keeps liquid communication, wherein: when in containment dry-well, pressure raises rapidly, mixed gas in containment dry-well enters the first hydrospace by constrain pipe and carries out condensation, and uncooled mixed gas can enter the 3rd hydrospace respectively and lasting condensation is carried out in the second hydrospace.
Wherein, constrain pipe outlet is arranged on the bottom of the first hydrospace.
Wherein, the second wet-well is provided with floss hole, and floss hole is arranged on the bottom of the second hydrospace.
Wherein, the dividing plate of isolating the first hydrospace and the 3rd hydrospace is provided with in the first wet-well.
Wherein, in the first hydrospace, the second hydrospace and the 3rd hydrospace, the liquid level of Chi Shui is equal.
For solving the problems of the technologies described above, present invention also offers the containment that a kind of two-stage is constrain, containment pressure can be suppressed to raise fast with non-enabling fashion, it is characterized in that, comprise: containment dry-well, be arranged on reactor pressure vessel bottom containment dry-well and the constrain containment constrain pond system of two-stage described above, wherein, the constrain containment constrain pond system of two-stage around the surrounding of the reactor pressure vessel be arranged on bottom containment dry-well.
Wherein, the first wet-well and the second wet-well lay respectively at the bottom of containment dry-well.
Wherein, atmospheric air is full of in containment dry-well.
Wherein, other is furnished with in containment dry-well in order to the nuclear island system in the presurized water reactor or boiling-water reactor nuclear power plant of 3 ~ 2,000,000 kilowatts of electric power ranks and device.
The containment that two-stage provided by the present invention is constrain and constrain pond system thereof, have following beneficial effect:
The first, when in containment dry-well, pressure raises rapidly, the mixed gas in containment dry-well enters the first hydrospace by constrain pipe and carries out condensation, and uncooled mixed gas enters the 3rd hydrospace respectively and lasting condensation is carried out in the second hydrospace.Its mode achieving complete non-kinetic operates.
The second, be provided with the first wet-well and the second wet-well, adopt condensed in two stages, effectively can improve the condensation efficiency of steam, improve constrain effect, strengthen the security of nuclear power plant.
Three, two-stage is constrain can optimize use safety shell-space, for the containment that free space is less, effectively can realize containment Stress control under accident.The designing requirement of containment can be reduced, there is larger economic worth.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the constrain containment of embodiment of the present invention two-stage.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, it is the embodiment one of the constrain containment of two-stage of the present invention.
The containment that two-stage in the present embodiment is constrain, containment pressure can be suppressed to raise fast with non-enabling fashion, comprise: containment dry-well 1, be arranged on reactor pressure vessel 2 bottom containment dry-well 1 and the constrain containment constrain pond system 3 of two-stage, wherein, the containment constrain pond system 3 that two-stage is constrain around the reactor pressure vessel 2 be arranged on bottom containment dry-well 1 around.
During concrete enforcement, containment dry-well 1 is a relatively airtight space, and it is the free volume being full of atmosphere gas.In the present embodiment, filling be atmospheric air.In addition, containment dry-well also can fill other gases of normal pressure, as nitrogen or vacuum.Other is furnished with in order to the nuclear island system in the presurized water reactor or boiling-water reactor nuclear power plant of 3 ~ 2,000,000 kilowatts of electric power ranks and device in containment dry-well 1.
Reactor pressure vessel 2 is arranged on the center bottom containment dry-well 1.In the present embodiment; the containment that two-stage is constrain constrain pond system 3 is arranged on the bottom of containment dry-well 1; and around being arranged on the surrounding of reactor pressure vessel 2; it can suppress containment pressure to raise fast under accident conditions; thus reduce the design pressure of containment shell; meanwhile, it can play the protective effect of highly significant to system in containment after accident and shell.Structure and the principle of work of constrain containment constrain pond system are below described.
The containment that two-stage in the present embodiment is constrain constrain pond system 3, in order to adopt non-enabling fashion to suppress containment pressure to raise fast, comprising:
First wet-well 31, first wet-well 31 has the first headroom 311, the first hydrospace 312 connected with the first headroom 311 respectively and the 3rd hydrospace 313.During concrete enforcement, first wet-well 31 is positioned at the bottom of containment dry-well 1, first headroom 311 is positioned at the top area of its inside, and the first hydrospace 312 and the 3rd hydrospace 313 lay respectively at the bottom section of its inside, the dividing plate 314 of isolating the first hydrospace 312 and the 3rd hydrospace 313 is provided with in first wet-well 31, its effect prevents the hydrospace between the first wet-well 31 and the second wet-well 33 to be directly communicated with, thus affect constrain effect.
Constrain pipe 32 is that its constrain pipe import 321 had in order to be connected with containment dry-well 1 exports 322 with the constrain pipe in order to be connected with the first hydrospace 312 of the first wet-well 31 when the steam of the High Temperature High Pressure making wherein to produce of having an accident in containment dry-well 1 enters the passage of the constrain containment of two-stage constrain pond system 3.Be understandable that, the fluid connection in the liquid in constrain pipe 32 and the first hydrospace 312, two regions belong to same hydrospace.Wherein, the top area that constrain pipe import 321 is positioned at containment constrain pond system 3 can be communicated with the inner space of containment dry-well 1, constrain pipe outlet 322 is positioned at the opposing floor portion position of containment constrain pond system 3, the namely bottom position of the first hydrospace 312, in order to be connected with the first hydrospace 312 of the first wet-well 31, to form the constrain gas-liquid channel of two-stage.
The second hydrospace 332 that second wet-well 33, second wet-well 33 has the second headroom 331, connects with the second headroom 331.During concrete enforcement, second wet-well 33 is positioned at the bottom of containment dry-well 1, second headroom 331 is positioned at the top area of its inside, and the second hydrospace 332 is positioned at the bottom section of its inside, further, the second wet-well 33 is provided with floss hole 333, and it is arranged on the bottom of the second hydrospace 33, liquid communication is kept, to form the constrain gas-liquid channel of two-stage in order to make the 3rd hydrospace 313 of the second hydrospace 332 and the first wet-well 31.That is, the fluid connection in the liquid in constrain pipe 32 and the first hydrospace 312, two regions belong to same hydrospace.
Preferably, in the first hydrospace 332, hydrospace 312, second and the 3rd hydrospace 313, the liquid level of Chi Shui is equal, and preferably space ratio during in order to form gas-liquid condensation, promotes condensation efficiency.
The containment that two-stage in the present embodiment is constrain constrain pond system in the specific implementation, when in containment dry-well 1, pressure raises rapidly, mixed gas in containment dry-well 1 enters the first hydrospace 312 by constrain pipe 32 and carries out condensation, and uncooled mixed gas enters the second headroom 331 respectively by the first headroom 311, the 3rd hydrospace 313 and the second hydrospace 332 and carries out lasting condensation.
Particularly, when the primary side pipeline of containment dry-well 1 nuclear island system or secondary side pipeline break, the steam of High Temperature High Pressure is discharged into the space of containment dry-well 1 from cut fast, and in the space of containment dry-well 1, pressure raises fast thus produce certain pressure reduction between containment dry-well 1 and the first wet-well 31.Due to pressure reduction effect, mixed gas in containment dry-well 1, such as steam and non-condensable gas just enter the first hydrospace 312 of the first wet-well 31 fast by the constrain pipe import 321 of constrain pipe 32 and constrain pipe outlet 322, and then steam is contacted with water, steam rapid condensation is water thus reduces the pressure in containment dry-well 1.Meanwhile, because the pressure in the first wet-well 31 raises, the steam of non-total condensation and non-condensable gas enter the 3rd hydrospace 313 and continuation condensation is carried out in the second hydrospace 332.The containment that this two-stage is constrain constrain pond system can suppress containment pressure to raise fast under accident conditions, thus reduces the design pressure of containment shell and play the protective effect of highly significant to system in containment after accident and shell.
Implement the constrain containment of two-stage of the present invention and constrain pond system thereof, there is following beneficial effect:
The first, when in containment dry-well, pressure raises rapidly, mixed gas in containment dry-well enters the first hydrospace by constrain pipe and carries out condensation, uncooled mixed gas enters the 3rd hydrospace respectively and lasting condensation is carried out in the second hydrospace, and its mode achieving complete non-kinetic operates.
The second, be provided with the first wet-well and the second wet-well, adopt condensed in two stages, effectively can improve the condensation efficiency of steam, improve constrain effect, strengthen the security of nuclear power plant.
Three, two-stage is constrain can optimize use safety shell-space, for the containment that free space is less, effectively can realize containment Stress control under accident.The designing requirement of containment can be reduced, there is larger economic worth.
Claims (9)
1. the containment constrain pond system that two-stage is constrain, in order to adopt non-enabling fashion to suppress containment pressure to raise fast, is characterized in that, comprising:
First wet-well, described first wet-well has the first headroom, the first hydrospace connected with described first headroom respectively and the 3rd hydrospace;
Constrain pipe, the constrain pipe import that described constrain pipe has in order to be connected with containment dry-well exports with the constrain pipe in order to be connected with described first hydrospace of described first wet-well;
Second wet-well, described second wet-well has the second headroom, the second hydrospace connected with described second headroom, and described 3rd hydrospace of described second hydrospace and described first wet-well keeps liquid communication, wherein:
When in containment dry-well, pressure raises rapidly, mixed gas in containment dry-well enters described first hydrospace by described constrain pipe and carries out condensation, and uncooled mixed gas can enter described 3rd hydrospace respectively and lasting condensation is carried out in described second hydrospace.
2. the containment constrain pond system that two-stage as claimed in claim 1 is constrain, is characterized in that, described constrain pipe outlet is arranged on the bottom of described first hydrospace.
3. the containment constrain pond system that two-stage as claimed in claim 1 is constrain, it is characterized in that, described second wet-well is provided with floss hole, and described floss hole is arranged on the bottom of described second hydrospace.
4. the containment constrain pond system that two-stage as claimed in claim 1 is constrain, is characterized in that, be provided with the dividing plate of isolating described first hydrospace and described 3rd hydrospace in described first wet-well.
5. the containment constrain pond system that two-stage as claimed in claim 1 is constrain, it is characterized in that, in described first hydrospace, described second hydrospace and described 3rd hydrospace, the liquid level of Chi Shui is equal.
6. the containment that a two-stage is constrain, containment pressure can be suppressed to raise fast with non-enabling fashion, it is characterized in that, comprise: containment dry-well, be arranged on the reactor pressure vessel bottom described containment dry-well and the constrain containment constrain pond system of the two-stage as described in any one of the claims 1-5, wherein, the containment that described two-stage is constrain constrain pond system is around the surrounding of the described reactor pressure vessel be arranged on bottom described containment dry-well.
7. the containment that two-stage as claimed in claim 6 is constrain, it is characterized in that, described first wet-well and described second wet-well lay respectively at the bottom of described containment dry-well.
8. the containment that two-stage as claimed in claim 6 is constrain, is characterized in that, be full of atmosphere gas in described containment dry-well.
9. the containment that two-stage as claimed in claim 6 is constrain, is characterized in that, be furnished with other in order to the nuclear island system in the presurized water reactor or boiling-water reactor nuclear power plant of 3 ~ 2,000,000 kilowatts of electric power ranks and device in described containment dry-well.
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| CN201510335985.8A CN104934076B (en) | 2015-06-17 | 2015-06-17 | A kind of constrain containment of two-stage and its constrain pond system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105957564A (en) * | 2016-05-06 | 2016-09-21 | 中国核动力研究设计院 | Pressure suppression and safe injection system |
| CN106098111A (en) * | 2016-06-23 | 2016-11-09 | 中广核研究院有限公司 | Containment with constrain pool construction |
| CN106158058A (en) * | 2016-06-30 | 2016-11-23 | 四川行之知识产权运营服务有限公司 | The system of safety is improved when using nuclear energy power generation |
| CN107093470A (en) * | 2017-03-10 | 2017-08-25 | 中国核电工程有限公司 | A kind of constrain system of containment for strengthening cooling |
| CN107293335A (en) * | 2016-04-12 | 2017-10-24 | 中广核研究院有限公司 | The passive constrain system of containment |
| CN107293336A (en) * | 2016-04-12 | 2017-10-24 | 中广核研究院有限公司 | The constrain system of marine nuclear power station containment |
| CN111599494A (en) * | 2020-05-09 | 2020-08-28 | 哈尔滨工程大学 | Press down pond |
| CN111599493A (en) * | 2020-05-09 | 2020-08-28 | 哈尔滨工程大学 | Press down pond |
| CN112071451A (en) * | 2020-09-15 | 2020-12-11 | 哈尔滨工程大学 | Pressurized water reactor multifunctional double-layer concrete containment system |
| WO2023070943A1 (en) * | 2021-10-29 | 2023-05-04 | 中广核研究院有限公司 | Pressure suppression pool apparatus and nuclear reactor |
| CN116246804A (en) * | 2023-05-11 | 2023-06-09 | 中国电力工程顾问集团有限公司 | Safety system of pressure restraining water tank and water floating nuclear power station |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107293336B (en) * | 2016-04-12 | 2019-10-22 | 中广核研究院有限公司 | The constrain system of marine nuclear power station containment |
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| CN111599494A (en) * | 2020-05-09 | 2020-08-28 | 哈尔滨工程大学 | Press down pond |
| CN111599493A (en) * | 2020-05-09 | 2020-08-28 | 哈尔滨工程大学 | Press down pond |
| CN112071451A (en) * | 2020-09-15 | 2020-12-11 | 哈尔滨工程大学 | Pressurized water reactor multifunctional double-layer concrete containment system |
| WO2023070943A1 (en) * | 2021-10-29 | 2023-05-04 | 中广核研究院有限公司 | Pressure suppression pool apparatus and nuclear reactor |
| CN116246804A (en) * | 2023-05-11 | 2023-06-09 | 中国电力工程顾问集团有限公司 | Safety system of pressure restraining water tank and water floating nuclear power station |
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Address after: 518053 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building 15 layer (1502-1504, 1506) Applicant after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Applicant after: China General Nuclear Power Corporation Applicant after: China wide nuclear electricity incorporated company Address before: 518031 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building 15 layer (1502-1504, 1506) Applicant before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Applicant before: China General Nuclear Power Corporation Applicant before: China wide nuclear electricity incorporated company |
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