CN202887745U - Active and passive combined safety shell heat extraction device - Google Patents
Active and passive combined safety shell heat extraction device Download PDFInfo
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- CN202887745U CN202887745U CN2012205032908U CN201220503290U CN202887745U CN 202887745 U CN202887745 U CN 202887745U CN 2012205032908 U CN2012205032908 U CN 2012205032908U CN 201220503290 U CN201220503290 U CN 201220503290U CN 202887745 U CN202887745 U CN 202887745U
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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 belongs to the technique of reactor design, and in particular relates to an active and passive combined safety shell heat extraction device which structurally comprises a safety shell spraying system and a passive safety shell heat deriving system; one end of a pipeline of the safety shell spraying system is connected with a material exchange water tank, and the other end of the pipeline of the safety shell spraying system is connected to a spraying connecting pipe on the top of a safety shell through a spraying pump and a heat exchanger; the passive safety shell heat deriving system comprises a heat exchanger or a heat exchanger group which is arranged in the safety shell; the heat exchanger or the heat exchanger group is connected with a heat exchange water tank arranged out of the safety shell through a rising pipeline and a falling pipeline; and the height of the heat exchange water tank is higher than the height of the heat exchanger or the heat exchanger group. The active and passive combined safety shell heat extraction device provided by the utility model can be used for improving the dependence on a safety-level power supply by a traditional active safety system nuclear power station, and improving the intrinsic safety of the nuclear power station safety shell heat extraction system.
Description
Technical field
The utility model belongs to the reactor designing technique, be specifically related to a kind of actively with the non-containment heat release that actively combines.
Background technology
The containment heat-extraction system in traditional core power station is to utilize containment spray system to get rid of to enter heat and the radiomaterial of containment, with the environmental baseline of control containment.The purpose that containment spray system is set is at the appropriate time from containment top spraying cold water, cooling containment atmosphere, the containment surge pressure behind restriction LOCA or the MSLB.In addition, in spray liquid, add in case of necessity chemical agent, to remove suspension iodine and the iodine steam in the containment atmosphere.It is strong that active containment spray system possesses cooling power, and the characteristics that post accident heat removal is effective are used widely.But this technology too relies on AC power, after station blackout stack LOCA or MSLB accident occur, can't realize the permanently effective heat extraction of containment.
The Passive containment cooling system that is represented as U.S. AP1000 of non-passive safety shell heat release.Passive containment cooling system adopt non-enabling fashion the dissipation of heat in the containment to ultimate heat sink-atmosphere, as shown in Figure 1.Under the accidental conditions, air enters from shielding structures top entrance 1, flows through behind the decline passway again oppositely by the rising runner, takes away the heat of metal containment chamber wall transmission, drains into environment from chimney at last, and gravity water injecting tank 2 is set above containment.After receiving containment high pressure signal, operation starts automatically after the accident of system, only needs to open three normal any one of closing in the isolation valve, does not need other actions to get final product start-up system.The startup of system also can be manually booted at master-control room or long-range shutdown workstation by operator.
Because single containment spray system is too high to the dependency degree of safe level power supply, therefore, utilize the environmental baseline of actively controlling containment with the non-mode that actively combines, be the trend of the times that improves the npp safety level.Non-passive safety shell heat release does not rely on conventional power source, relies on Natural Circulation to finish security function after the accident.When the relevant accident of station blackout or containment spray system fault, system still can move and realize the integrality of containment, is effectively replenishing of active containment heat release.
The utility model content
The utility model purpose is the defective for the containment heat-extraction system in traditional core power station, provide a kind of actively with the non-containment heat release that actively combines, improve the active security system nuclear power station of tradition to the dependence of safe level power supply, improve the inherent safety of nuclear power plant containment shell heat-extraction system.
The technical solution of the utility model is as follows: a kind of actively with the non-containment heat release that actively combines, comprise containment spray system and passive containment thermal conduction system, pipeline one end of described containment spray system connects material-changing water tank, and the other end is connected to the spray thrower at containment top behind spray pump and heat exchanger; Described passive containment thermal conduction system comprises heat interchanger or the heat exchanger package that is arranged on containment inside, described heat interchanger or heat exchanger package are connected with the heat-exchanging water tank that is arranged on the containment outside with the decline pipeline by the rising pipeline, and the height of heat-exchanging water tank is higher than the height of heat interchanger or heat exchanger package.
Further, aforesaid actively with the non-containment heat release that actively combines, wherein, be connected with the chemical addition agent case at the upstream line of described containment spray system spray pump.
Further, aforesaid actively with the non-containment heat release that actively combines, wherein, the spray thrower of described containment spray system is arranged on different level place, containment top.
Further, aforesaid actively with the non-containment heat release that actively combines, wherein, the described material-changing water tank that is connected with the pipeline of containment spray system is arranged on melt pit position, containment inner reactor core below, and described spray pump, heat exchanger and chemical addition agent case are arranged on outside the containment.
Further, aforesaid actively with the non-containment heat release that actively combines, wherein, be provided with steam-water separator in the heat-exchanging water tank of described containment outside, the rising pipeline of the heat interchanger of described passive containment thermal conduction system or heat exchanger package is connected with steam-water separator.
Further, aforesaid actively with the non-containment heat release that actively combines, wherein, be respectively equipped with isolation valve at rising pipeline and the decline pipeline of described passive containment thermal conduction system.
Further, aforesaid active and the non-containment heat release that actively combines, wherein, the reinforced concrete structure of described heat-exchanging water tank for sealing, and be provided with stainless steel lining.
The beneficial effects of the utility model are as follows: containment heat release provided by the utility model can be tackled design basis accident by active mode with non-active combination, can under the operating mode of the beyond design basis accidents such as station blackout, major accident or active containment heat release trouble or failure, continue to discharge again simultaneously the heat in the containment, improved the inherent safety of system, improved traditional active security system nuclear power station to the dependence of safe level power supply, improved the security of nuclear power station, the integrality that can effectively keep simultaneously, containment.
Description of drawings
Fig. 1 is the Passive containment cooling system structural representation of AP1000;
Fig. 2 for actively with the non-containment heat release structural representation that actively combines.
Embodiment
Containment heat release provided by the utility model combines active containment spray system with passive containment thermal conduction system.Pipeline one end of containment spray system connects material-changing water tank, and the other end is connected to the spray thrower at containment top behind spray pump and heat exchanger; Passive containment thermal conduction system comprises heat interchanger or the heat exchanger package that is arranged on containment inside, and described heat interchanger or heat exchanger package are connected with the heat-exchanging water tank that is arranged on the containment outside with the decline pipeline by the rising pipeline.
Active containment spray system (being called for short the CSP system) is used for the heat extraction of containment under the design basis accident operating mode, under accident conditions (LOCA or containment internal steam pipe road break), when the pressure and temperature in the containment is elevated to certain value, the pressure and temperature of containment is reduced to acceptable level, to keep the integrality of containment.Passive containment thermal conduction system (abbreviation pcs system) is used for the long-term heat extraction of containment under the beyond design basis accident operating mode, comprises the accident relevant with the spray system fault with station blackout.Pcs system also is used for the accident mitigation of major accident operating mode (if beyond design basis accident develops into the major accident that reactor core obviously worsens).When nuclear power station generation beyond design basis accident (comprising major accident) operating mode, the containment pressure and temperature is reduced to acceptable level, to keep the integrality of containment.Containment spray system and containment heat guiding system are all for containment heat extraction after the accident, therefore two system in combination are got up to use the temperature, pressure level in the control containment, to keep containment integrity, can tackle design basis accident to beyond design basis accident until major accident.This assembled scheme is all wider than the accident conditions of single active system or passive system covering, and two systems put into operation respectively better to the restriction effect of Environment condition inside containment after the accident.
Below in conjunction with drawings and Examples the utility model is described in detail.
As shown in Figure 2, actively comprise containment spray system (CSP system) and passive containment thermal conduction system (pcs system) with the non-containment heat release that actively combines, pipeline one end of described containment spray system connects material-changing water tank 2, the other end is connected to the spray thrower 9 at containment top behind spray pump 3 and heat exchanger 4, design feature according to the containment dome, spray thrower 9 is positioned at different level place, containment top, upstream line at spray pump 3 is connected with chemical addition agent case 5, the chemical addition agent case is used for adding NaOH, and effect is the volatility iodine for absorbed air; And the pH value that improves shower water, avoid the structured material corrosion.Material-changing water tank 2 can be arranged on outside the containment or in the containment, in the preferred scheme, material-changing water tank 2 is arranged on melt pit position, reactor core below in the containment, and material-changing water tank is positioned at lowest part, conveniently compiles the water source that brings from container spray, pipeline cut.Spray pump 3, heat exchanger 4 and chemical addition agent case 5 all are arranged on outside the containment.
Active containment heat release is the CSP system, the CSP system is evacuated to spray pipe with shower water from internal or external material-changing water tank by spray pump (electrodynamic pump), in containment, spray chilled water, the intensification that causes continue to reduce the containment internal cause to have an accident and boosting.
Described passive containment thermal conduction system (pcs system) comprises heat interchanger or the heat exchanger package 6 that is arranged on containment 1 inside, described heat interchanger or heat exchanger package 6 are connected with the heat-exchanging water tank 7 that is arranged on the containment outside with the decline pipeline by the rising pipeline, and the height of heat-exchanging water tank 7 is higher than the height of heat interchanger or heat exchanger package 6.Be provided with steam-water separator 8 in the heat-exchanging water tank 7, the rising pipeline of described heat interchanger or heat exchanger package 6 is connected with steam-water separator 8, is respectively equipped with isolation valve 10,11 at rising pipeline and the decline pipeline of passive containment thermal conduction system.
Pcs system adopts non-active design concept, utilize the heat interchanger of layout in the containment or the high temperature air in heat exchanger package and the containment to carry out condensation, convection current and radiant heat transfer, the heat of high temperature air heats up in the chilled water absorption safety shell of hot arc heat interchanger, density reduces, form density difference with the water of cold leg, enter steam-water separator in the heat-exchanging water tank by the rising pipeline, after the heat-exchanging water tank cooling, return heat interchanger by the downtake linear flow, finish Natural Circulation.The ultimate heat sink of the heat-exchanging water tank that arranges outside containment is atmosphere, by flowing of water in the Tube Sheet of Heat Exchanger, continuously the heat in the containment is taken to outside the containment, to realize constantly non-passive safety shell heat discharge under beyond design basis accident and the major accident operating mode.
Pcs system arranges three row in the present embodiment, and each series comprises the pneumatic valve (being positioned at the decline pipeline) of one group of heat interchanger, a steam-water separator, a heat-exchanging water tank, an electronic isolation valve, two parallel connections.Heat interchanger is arranged on the interior circumference of containment; Heat-exchanging water tank is the stainless steel-lined equipment of reinforced concrete structure, is arranged in the annular building thing of double containment shell.
After generation design basis accident containment pressure reached threshold value, the CSP system triggered startup automatically, or manually opened by operator, to discharge heat in the containment.Pcs system adopts passive technology, when station blackout occurs, is not having in the situation of Operator actions, and system puts into operation automatically, utilizes Natural Circulation to realize the long-term heat extraction of containment.In the situation that need not operator's operation, the non-active heat extraction time of containment kept 72 hours at least, can consider other moisturizing means after 72 hours.
The utility model adopts actively and derives the interior heat of containment with the non-mode that actively combines, the integrality that can keep containment satisfies China nuclear safety codes HAF102(2004) in " nuclear power plant design safety regulation " to keeping the requirement of containment integrity and containment heat extraction.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technology thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (7)
- One kind actively with the non-containment heat release that actively combines, it is characterized in that: comprise containment spray system and passive containment thermal conduction system, pipeline one end of described containment spray system connects material-changing water tank (2), and the other end is connected to the spray thrower (9) at containment top behind spray pump (3) and heat exchanger (4); Described passive containment thermal conduction system comprises heat interchanger or the heat exchanger package (6) that is arranged on containment (1) inside, described heat interchanger or heat exchanger package (6) are connected with the heat-exchanging water tank that is arranged on the containment outside (7) with the decline pipeline by the rising pipeline, and the height of heat-exchanging water tank (7) is higher than the height of heat interchanger or heat exchanger package (6).
- As claimed in claim 1 actively with the non-containment heat release that actively combines, it is characterized in that: the upstream line at described containment spray system spray pump (3) is connected with chemical addition agent case (5).
- As claimed in claim 1 or 2 actively with the non-containment heat release that actively combines, it is characterized in that: the spray thrower of described containment spray system (9) is arranged on different level place, containment (1) top.
- As claimed in claim 3 actively with the non-containment heat release that actively combines, it is characterized in that: the described material-changing water tank that is connected with the pipeline of containment spray system (2) is arranged on melt pit position, containment inner reactor core below, and described spray pump (3), heat exchanger (4) and chemical addition agent case (5) are arranged on outside the containment.
- As claimed in claim 1 actively with the non-containment heat release that actively combines, it is characterized in that: be provided with steam-water separator (8) in the heat-exchanging water tank (7) of described containment outside, the rising pipeline of the heat interchanger of described passive containment thermal conduction system or heat exchanger package (6) is connected with steam-water separator (8).
- As claim 1 or 5 described actively with the non-containment heat release that actively combines, it is characterized in that: rising pipeline and decline pipeline at described passive containment thermal conduction system are respectively equipped with isolation valve (10,11).
- 7. active and the non-containment heat release that actively combines as claimed in claim 6 is characterized in that: the reinforced concrete structure of described heat-exchanging water tank (7) for sealing, and be provided with stainless steel lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205032908U CN202887745U (en) | 2012-09-27 | 2012-09-27 | Active and passive combined safety shell heat extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205032908U CN202887745U (en) | 2012-09-27 | 2012-09-27 | Active and passive combined safety shell heat extraction device |
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| CN202887745U true CN202887745U (en) | 2013-04-17 |
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| CN2012205032908U Expired - Lifetime CN202887745U (en) | 2012-09-27 | 2012-09-27 | Active and passive combined safety shell heat extraction device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881342A (en) * | 2012-09-27 | 2013-01-16 | 中国核电工程有限公司 | Active and passive combined heat removal device for containment |
| CN103413580A (en) * | 2013-07-31 | 2013-11-27 | 中科华核电技术研究院有限公司 | Passive containment spray system |
| CN103956193A (en) * | 2014-03-31 | 2014-07-30 | 中国核电工程有限公司 | Passive containment heat removal system |
| CN103956195A (en) * | 2014-03-31 | 2014-07-30 | 中国核电工程有限公司 | Active and passive combination containment heat removal system |
| CN104103325A (en) * | 2014-07-24 | 2014-10-15 | 哈尔滨工程大学 | Heat derivation system for long-term passive containment |
| WO2015149718A1 (en) * | 2014-04-03 | 2015-10-08 | 国核（北京）科学技术研究院有限公司 | Passive containment heat removal system, control method thereof and pressurized water reactor |
| CN105047237A (en) * | 2015-07-21 | 2015-11-11 | 中国核电工程有限公司 | Spent fuel pool spray cooling system capable of combining active mode with passive mode and control method thereof |
| CN107424654A (en) * | 2017-08-01 | 2017-12-01 | 中广核研究院有限公司 | The system and method for exporting heat in containment |
| CN108766596A (en) * | 2018-04-25 | 2018-11-06 | 中国核电工程有限公司 | Spent Fuel Pool cooling system built in a kind of containment |
-
2012
- 2012-09-27 CN CN2012205032908U patent/CN202887745U/en not_active Expired - Lifetime
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2520456A (en) * | 2012-09-27 | 2015-05-20 | China Nuclear Power Eng Co Ltd | Combined active and passive containment vessel heat removal apparatus |
| WO2014048293A1 (en) * | 2012-09-27 | 2014-04-03 | 中国核电工程有限公司 | Combined active and passive containment vessel heat removal apparatus |
| GB2520456B (en) * | 2012-09-27 | 2018-08-08 | China Nuclear Power Eng Co Ltd | Combined active and passive containment vessel heat removal apparatus |
| CN102881342A (en) * | 2012-09-27 | 2013-01-16 | 中国核电工程有限公司 | Active and passive combined heat removal device for containment |
| CN103413580A (en) * | 2013-07-31 | 2013-11-27 | 中科华核电技术研究院有限公司 | Passive containment spray system |
| CN103413580B (en) * | 2013-07-31 | 2016-05-11 | 中广核研究院有限公司 | Non-passive safety shell spray system |
| CN103956195B (en) * | 2014-03-31 | 2017-02-15 | 中国核电工程有限公司 | Active and passive combination containment heat removal system |
| CN103956195A (en) * | 2014-03-31 | 2014-07-30 | 中国核电工程有限公司 | Active and passive combination containment heat removal system |
| CN103956193A (en) * | 2014-03-31 | 2014-07-30 | 中国核电工程有限公司 | Passive containment heat removal system |
| WO2015149718A1 (en) * | 2014-04-03 | 2015-10-08 | 国核（北京）科学技术研究院有限公司 | Passive containment heat removal system, control method thereof and pressurized water reactor |
| CN104979022A (en) * | 2014-04-03 | 2015-10-14 | 国核（北京）科学技术研究院有限公司 | Non-active containment heat export system and pressurized water reactor |
| US10529459B2 (en) | 2014-04-03 | 2020-01-07 | State Nuclear Power Research Institute | Passive containment heat removal system and control method thereof |
| CN104103325A (en) * | 2014-07-24 | 2014-10-15 | 哈尔滨工程大学 | Heat derivation system for long-term passive containment |
| CN104103325B (en) * | 2014-07-24 | 2017-01-25 | 哈尔滨工程大学 | Heat derivation system for long-term passive containment |
| CN105047237A (en) * | 2015-07-21 | 2015-11-11 | 中国核电工程有限公司 | Spent fuel pool spray cooling system capable of combining active mode with passive mode and control method thereof |
| CN107424654A (en) * | 2017-08-01 | 2017-12-01 | 中广核研究院有限公司 | The system and method for exporting heat in containment |
| CN108766596A (en) * | 2018-04-25 | 2018-11-06 | 中国核电工程有限公司 | Spent Fuel Pool cooling system built in a kind of containment |
| CN108766596B (en) * | 2018-04-25 | 2021-06-25 | 中国核电工程有限公司 | Cooling system for containment built-in spent fuel pool |
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Granted publication date: 20130417 |
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| CX01 | Expiry of patent term |