CN102881342A - Active and passive combined heat removal device for containment - Google Patents

Active and passive combined heat removal device for containment Download PDF

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Publication number
CN102881342A
CN102881342A CN2012103702967A CN201210370296A CN102881342A CN 102881342 A CN102881342 A CN 102881342A CN 2012103702967 A CN2012103702967 A CN 2012103702967A CN 201210370296 A CN201210370296 A CN 201210370296A CN 102881342 A CN102881342 A CN 102881342A
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CN
China
Prior art keywords
containment
heat
actively
heat exchanger
pipeline
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Pending
Application number
CN2012103702967A
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Chinese (zh)
Inventor
赵侠
于勇
宋代勇
袁霞
赵光辉
李军
李伟
王志刚
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China Nuclear Power Engineering Co Ltd
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China Nuclear Power Engineering Co Ltd
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Application filed by China Nuclear Power Engineering Co Ltd filed Critical China Nuclear Power Engineering Co Ltd
Priority to CN2012103702967A priority Critical patent/CN102881342A/en
Publication of CN102881342A publication Critical patent/CN102881342A/en
Priority to PCT/CN2013/084049 priority patent/WO2014048293A1/en
Priority to MYPI2015700868A priority patent/MY175898A/en
Priority to GB1504154.4A priority patent/GB2520456B/en
Priority to ZA2015/02773A priority patent/ZA201502773B/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/18—Emergency cooling arrangements; Removing shut-down heat
    • 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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  • Physics & Mathematics (AREA)
  • 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 belongs to the reactor design technology, and particularly relates to an active and passive combined heat removal device for containment. The active and passive combined heat removal device structurally comprises a containment spraying system and a passive containment heat leading-out system; one end of a pipeline of the containment spraying system is connected with a refueling water tank, and the other end of the pipeline of the containment spraying system is connected to a spraying header on the top of the containment by a spraying pump and a heat exchanger; and the passive containment heat leading-out system comprises a heat exchanger or heat exchanger set, the heat exchanger or heat exchanger set is arranged in the containment and is connected with a heat exchange water tank by a riser pipeline or a downcomer pipeline, and the heat exchange water tank is arranged on the outer portion of the containment, and is higher than the heat exchanger or heat exchanger set. The active and passive combined heat removal device has the advantages that dependence of the traditional nuclear power plant with an active safety system on a safety power source is changed, and intrinsic safety of a heat removal system of the containment of a nuclear power plant is improved.

Description

A kind of actively with the non-containment heat release that actively combines
Technical field
The invention 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.
Summary of the invention
The object of the invention 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.
Technical scheme of the present invention 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.
Beneficial effect of the present invention is as follows: containment heat release provided by the present invention 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 present invention 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 present invention 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, full factory occurs criticize when cutting off the power supply, and 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 present invention 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 present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technology thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (7)

  1. 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).
  2. 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).
  3. As claimed in claim 1 or 2 actively with the non-containment heat release that actively combines, it is characterized in that: spray collection (9) pipe of described containment spray system is arranged on different level place, containment (1) top.
  4. 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.
  5. 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).
  6. 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. 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.
CN2012103702967A 2012-09-27 2012-09-27 Active and passive combined heat removal device for containment Pending CN102881342A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN2012103702967A CN102881342A (en) 2012-09-27 2012-09-27 Active and passive combined heat removal device for containment
PCT/CN2013/084049 WO2014048293A1 (en) 2012-09-27 2013-09-24 Combined active and passive containment vessel heat removal apparatus
MYPI2015700868A MY175898A (en) 2012-09-27 2013-09-24 Combined active and passive containment vessel heat removal apparatus
GB1504154.4A GB2520456B (en) 2012-09-27 2013-09-24 Combined active and passive containment vessel heat removal apparatus
ZA2015/02773A ZA201502773B (en) 2012-09-27 2015-04-23 Combined active and passive containment vessel heat removal apparatus

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Application Number Priority Date Filing Date Title
CN2012103702967A CN102881342A (en) 2012-09-27 2012-09-27 Active and passive combined heat removal device for containment

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CN102881342A true CN102881342A (en) 2013-01-16

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GB (1) GB2520456B (en)
MY (1) MY175898A (en)
WO (1) WO2014048293A1 (en)
ZA (1) ZA201502773B (en)

Cited By (14)

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Publication number Priority date Publication date Assignee Title
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
CN103903657A (en) * 2013-12-17 2014-07-02 中广核核电运营有限公司 Nuclear power plant passive final hot trap cooling system and method
CN104078086A (en) * 2014-06-04 2014-10-01 中国核电工程有限公司 Active and passive combined containment sump water cooling system
CN104134473A (en) * 2014-06-30 2014-11-05 中国核电工程有限公司 Active-combined passive containment vessel cooling system
CN104134472A (en) * 2014-06-30 2014-11-05 中国核电工程有限公司 Manual dosing and cleidoic dosing control system and method for containment vessel spray system
CN104751910A (en) * 2013-12-31 2015-07-01 中国广核集团有限公司 Emergency spray cooling system for containment in accident condition of nuclear power plant
CN105405479A (en) * 2015-11-06 2016-03-16 中广核工程有限公司 Comprehensive passive safety system for pressurized water reactor nuclear plant
CN106251916A (en) * 2016-08-31 2016-12-21 长江勘测规划设计研究有限责任公司 A kind of underground nuclear power station cavern type double containment
CN107393612A (en) * 2017-07-31 2017-11-24 江苏华洋新思路能源装备股份有限公司 The passive opposite opened exhaust cap of material-changing water tank built in nuclear power generating sets containment
CN107731321A (en) * 2017-09-30 2018-02-23 中国核电工程有限公司 A kind of passive containment thermal conduction system protector
CN107808701A (en) * 2017-10-30 2018-03-16 上海核工程研究设计院有限公司 Spray and shell wall heat-extraction system in a kind of passive containment
CN107978380A (en) * 2016-10-25 2018-05-01 广东核电合营有限公司 A kind of sodium ion control device of nuclear power plant containment shell spray system
CN110752046A (en) * 2019-10-12 2020-02-04 中国核电工程有限公司 Safety device, nuclear power plant system and safe operation method of nuclear power plant
CN113140335A (en) * 2021-04-02 2021-07-20 中国核电工程有限公司 Passive containment heat exporting system with internal heat exchanger protection device

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JP2021050919A (en) * 2019-09-20 2021-04-01 日立Ｇｅニュークリア・エナジー株式会社 Ph adjustment system for reactor container vessel

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GB2520456B (en) * 2012-09-27 2018-08-08 China Nuclear Power Eng Co Ltd Combined active and passive containment vessel heat removal apparatus
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
CN103903657A (en) * 2013-12-17 2014-07-02 中广核核电运营有限公司 Nuclear power plant passive final hot trap cooling system and method
CN103903657B (en) * 2013-12-17 2016-04-20 中广核核电运营有限公司 The non-active ultimate heat sink cooling system of nuclear power plant and method
CN104751910A (en) * 2013-12-31 2015-07-01 中国广核集团有限公司 Emergency spray cooling system for containment in accident condition of nuclear power plant
CN104078086A (en) * 2014-06-04 2014-10-01 中国核电工程有限公司 Active and passive combined containment sump water cooling system
CN104134473A (en) * 2014-06-30 2014-11-05 中国核电工程有限公司 Active-combined passive containment vessel cooling system
CN104134472A (en) * 2014-06-30 2014-11-05 中国核电工程有限公司 Manual dosing and cleidoic dosing control system and method for containment vessel spray system
CN104134473B (en) * 2014-06-30 2016-12-07 中国核电工程有限公司 The containment cooling system that a kind of active combination is passive
CN105405479A (en) * 2015-11-06 2016-03-16 中广核工程有限公司 Comprehensive passive safety system for pressurized water reactor nuclear plant
CN106251916A (en) * 2016-08-31 2016-12-21 长江勘测规划设计研究有限责任公司 A kind of underground nuclear power station cavern type double containment
CN106251916B (en) * 2016-08-31 2018-01-23 长江勘测规划设计研究有限责任公司 A kind of underground nuclear power station cavern type double containment
CN107978380A (en) * 2016-10-25 2018-05-01 广东核电合营有限公司 A kind of sodium ion control device of nuclear power plant containment shell spray system
CN107393612A (en) * 2017-07-31 2017-11-24 江苏华洋新思路能源装备股份有限公司 The passive opposite opened exhaust cap of material-changing water tank built in nuclear power generating sets containment
CN107731321A (en) * 2017-09-30 2018-02-23 中国核电工程有限公司 A kind of passive containment thermal conduction system protector
CN107808701A (en) * 2017-10-30 2018-03-16 上海核工程研究设计院有限公司 Spray and shell wall heat-extraction system in a kind of passive containment
CN110752046A (en) * 2019-10-12 2020-02-04 中国核电工程有限公司 Safety device, nuclear power plant system and safe operation method of nuclear power plant
CN110752046B (en) * 2019-10-12 2022-01-11 中国核电工程有限公司 Safety device, nuclear power plant system and safe operation method of nuclear power plant
CN113140335A (en) * 2021-04-02 2021-07-20 中国核电工程有限公司 Passive containment heat exporting system with internal heat exchanger protection device
CN113140335B (en) * 2021-04-02 2022-03-22 中国核电工程有限公司 Passive containment heat exporting system with internal heat exchanger protection device

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MY175898A (en) 2020-07-14
GB2520456B (en) 2018-08-08
ZA201502773B (en) 2016-04-28
WO2014048293A1 (en) 2014-04-03
GB2520456A (en) 2015-05-20
GB201504154D0 (en) 2015-04-29

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Application publication date: 20130116