CN105741889A - Spray cooling system for spent fuel pool of nuclear power station - Google Patents
Spray cooling system for spent fuel pool of nuclear power station Download PDFInfo
- Publication number
- CN105741889A CN105741889A CN201610216249.5A CN201610216249A CN105741889A CN 105741889 A CN105741889 A CN 105741889A CN 201610216249 A CN201610216249 A CN 201610216249A CN 105741889 A CN105741889 A CN 105741889A
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- China
- Prior art keywords
- spray
- nuclear power
- cooling system
- power station
- pond
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Classifications
-
- 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
- G21C15/182—Emergency cooling arrangements; Removing shut-down heat comprising powered means, e.g. pumps
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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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- 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 provides a spray cooling system for a spent fuel pool of a nuclear power station.The spray cooling system comprises spraying pipelines, spray nozzles, pumps, corresponding valves and corresponding instruments, wherein the spraying pipelines are arranged on the periphery or the two opposite sides of the spent fuel pool.The spray cooling system for the spent fuel pool of the nuclear power station can be independent of a traditional spent fuel pool cooling system, and fuel cooling is kept and fuel safety is ensured under the working condition of an extreme accident that a large amount of pool water is instantly lost.
Description
Technical field
The present invention relates to cooling field, Nuclear Power Station's Exhausted Fuels pond, be specifically related to a kind of spray cooling system for Nuclear Power Station's Exhausted Fuels pond.
Background technology
In traditional pressurized-water reactor nuclear power plant, in each fuel recycle latter stage, the irradiated fuel assembly reaching certain burn-up level will be drawn off from reactor core, and transported and be stored in spentnuclear fuel pond.Spentnuclear fuel pond is typically designed to cuboid, is arranged in outside containment, and inside is provided with spent fuel storage rack, for depositing the irradiated fuel assembly drawn off from reactor core.Before irradiated fuel assembly outward transport, decay heat will be produced in pond always；Particularly with the irradiated fuel assembly just drawn off, the decay heat of its generation is bigger.Therefore, it is generally spentnuclear fuel pond configuration cooling system, rely on pump and heat exchanger that Chi Shui is circulated cooling, it is prevented that accumulation of heat threatens fuel containment, also avoid water layer thickness that the excessive evaporation of Chi Shui causes fuel to cover can not provide enough radiation protection for operator.Meanwhile, spentnuclear fuel pond generally adopts antidetonation I class formation to design, and will not be damaged and cause that Chi Shui loses in a large number under safe shutdown earthquake (SSE) operating mode.
The design of existing pressurized-water reactor nuclear power plant spentnuclear fuel pond cooling system, rely on pump and the heat exchanger of safe level or non-security level under normal circumstances, the thermal capacitance of pond water itself is relied on when losing normal cooling, and emergence compensating water interface after the accident of system setting, all can guarantee that the long-term cooling in spentnuclear fuel pond under design basis accident operating mode.But for extreme accident conditions, for instance the attack of terrorism or aircraft impact, Chi Shui will run off at short notice in a large number, cause that irradiated fuel assembly is rapidly heated even exposed.If a kind of spentnuclear fuel pond spray system being totally independent of former cooling system can be designed, fuel safety and power plant safety will be effectively improved.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, it is proposed to a kind of spray cooling system for Nuclear Power Station's Exhausted Fuels pond.
Spray cooling system for Nuclear Power Station's Exhausted Fuels pond includes spray pipe, nozzle, pump and corresponding valve and instrument；Wherein, described spray pipe is arranged in the surrounding of Spent Fuel Pool or relative both sides.
Preferably, described spray pipe includes spray house steward and spray arm；Described spray arm picks out from described spray house steward, and described spray house steward comes from same water source or from different water sources.
Preferably, spray water source is the water tender outside the pond in nuclear power plant, water tank or factory.
Preferably, described instrument includes flow instrument, for monitoring the flow of spray system in real time.
Preferably, corresponding valve includes pump inlet isolating valve and pump discharge isolating valve.
Preferably, corresponding valve includes pump outlet check valve.
Preferably, described nozzle presses close to pool wall layout in higher position, top, spentnuclear fuel pond, it is to avoid affect fuel handling.
Compared with prior art, the method have the advantages that
1, the spray cooling system for Nuclear Power Station's Exhausted Fuels pond provided by the invention, it is possible to be totally independent of traditional spentnuclear fuel pond cooling system, under the extreme accident conditions that pool water within moment loses in a large number, maintains fuel cooling, it is ensured that the safety of fuel.
2, the spray cooling system for Nuclear Power Station's Exhausted Fuels pond provided by the invention, under extreme accident conditions, relies on pump to provide water source driving force, provides cooling by spray system for spentnuclear fuel pond, it is ensured that fuel containment.
3, the spray cooling system for Nuclear Power Station's Exhausted Fuels pond provided by the invention, different from the feature of tradition Nuclear Power Station's Exhausted Fuels pond cooling system, traditional irradiated fuel assembly type of cooling is the flow circuit cooling under water submerged state, the present invention then directly provides spraying cooling water for irradiated fuel assembly, evaporation of water is relied on to take away the decay heat that fuel produces, it is prevented that fuel is exposed or damages.
Accompanying drawing explanation
Fig. 1 is Nuclear Power Station's Exhausted Fuels pond spray cooling system (spray pipe the is arranged in spentnuclear fuel pond surrounding) general flow chart meeting the preferred embodiment of the present invention.
Fig. 2 is Nuclear Power Station's Exhausted Fuels pond spray cooling system (spray pipe is arranged in both sides, the spentnuclear fuel pond) general flow chart meeting the preferred embodiment of the present invention.
Wherein, 1 spray water source；2 pump inlet isolating valves；3 spray pumps；4 pump discharge isolating valves；5 flow instruments；6 pump outlet check valve；7 spray house stewards；8--nozzle
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below for AP series nuclear power station, in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
As illustrated in fig. 1 and 2, spray pipe, nozzle 8, pump 3 and corresponding valve and instrument are included for the spray cooling system in Nuclear Power Station's Exhausted Fuels pond；Wherein, described spray pipe is arranged in the surrounding (as shown in Figure 1) of Spent Fuel Pool or relative both sides (as shown in Figure 2).
Preferably, described spray pipe includes spray house steward 7 and spray arm；Described spray arm picks out from described spray house steward 7, and described spray house steward 7 comes from same water source or from different water sources.
Preferably, spray water source 1 is the water tender outside the pond in nuclear power plant, water tank or factory.
Preferably, described instrument includes flow instrument 5, for monitoring the flow of spray system in real time.
Preferably, corresponding valve includes pump inlet isolating valve 2 and pump discharge isolating valve 4.
Preferably, corresponding valve includes pump outlet check valve 6.
Preferably, described nozzle presses close to pool wall layout in higher position, top, spentnuclear fuel pond, it is to avoid affect fuel handling.
As in figure 2 it is shown, the nozzle 8 of AP series Nuclear Power Station's Exhausted Fuels pond spray cooling system is arranged on the thing both sides in spentnuclear fuel pond, two spray house stewards are coupled with on-site fire water box and passive containment cooling water tank.Under extreme accident conditions, when unexpected emptying occurs in spentnuclear fuel pond, open pump inlet isolating valve 2 and pump discharge isolating valve 4, start pump 3, start spentnuclear fuel pond is carried out spraying cooling；When needing not continue to spray, termination of pumping 3, close pump inlet isolating valve 2 and pump discharge isolating valve 4.
Compared with prior art, the present embodiment has the advantages that
1, the spray cooling system for Nuclear Power Station's Exhausted Fuels pond that the present embodiment provides, it is possible to be totally independent of traditional spentnuclear fuel pond cooling system, under the extreme accident conditions that pool water within moment loses in a large number, maintains fuel cooling, it is ensured that the safety of fuel.
2, the spray cooling system for Nuclear Power Station's Exhausted Fuels pond that the present embodiment provides, under extreme accident conditions, relies on pump to provide water source driving force, provides cooling by spray system for spentnuclear fuel pond, it is ensured that fuel containment.
3, the spray cooling system for Nuclear Power Station's Exhausted Fuels pond that the present embodiment provides, different from the feature of tradition Nuclear Power Station's Exhausted Fuels pond cooling system, traditional irradiated fuel assembly type of cooling is the flow circuit cooling under water submerged state, the present invention then directly provides spraying cooling water for irradiated fuel assembly, evaporation of water is relied on to take away the decay heat that fuel produces, it is prevented that fuel is exposed or damages.
In this specification, each embodiment adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually referring to.For system disclosed in embodiment, owing to corresponding to the method disclosed in Example, so what describe is fairly simple, relevant part illustrates referring to method part.
Those skilled in the art specifically can should be used for using different methods to realize described function to each, but this realization is it is not considered that beyond the scope of this invention.
Obviously, invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to include these change and modification.
Claims (6)
1. the spray cooling system for Nuclear Power Station's Exhausted Fuels pond, it is characterised in that include spray pipe, nozzle, pump and corresponding valve and instrument；Wherein, described spray pipe is arranged in the surrounding of Spent Fuel Pool or relative both sides.
2. the spray cooling system for Nuclear Power Station's Exhausted Fuels pond as claimed in claim 1, it is characterised in that described spray pipe includes spray house steward and spray arm；Described spray arm picks out from described spray house steward, and described spray house steward comes from same water source or from different water sources.
3. the spray cooling system for Nuclear Power Station's Exhausted Fuels pond as claimed in claim 1, it is characterised in that spray water source is the water tender outside the pond in nuclear power plant, water tank or factory.
4. the spray cooling system for Nuclear Power Station's Exhausted Fuels pond as claimed in claim 1, it is characterised in that described instrument includes flow instrument, for monitoring the flow of spray system in real time.
5. the spray cooling system for Nuclear Power Station's Exhausted Fuels pond as claimed in claim 1, it is characterised in that corresponding valve includes pump inlet isolating valve and pump discharge isolating valve.
6. the spray cooling system for Nuclear Power Station's Exhausted Fuels pond as claimed in claim 1, it is characterised in that corresponding valve includes pump outlet check valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216249.5A CN105741889A (en) | 2016-04-07 | 2016-04-07 | Spray cooling system for spent fuel pool of nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610216249.5A CN105741889A (en) | 2016-04-07 | 2016-04-07 | Spray cooling system for spent fuel pool of nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105741889A true CN105741889A (en) | 2016-07-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610216249.5A Pending CN105741889A (en) | 2016-04-07 | 2016-04-07 | Spray cooling system for spent fuel pool of nuclear power station |
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| CN (1) | CN105741889A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060319A (en) * | 2018-05-29 | 2018-12-21 | 华北电力大学 | A kind of experimental rig and method for nuclear power station spent fuel reservoir nozzle sensibility |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5488642A (en) * | 1994-08-22 | 1996-01-30 | Consolidated Edison Company Of New York, Inc. | Cooling system for spent fuel pool |
| CN103440891A (en) * | 2013-09-10 | 2013-12-11 | 华北电力大学 | Passive water supplementation spraying system of spent fuel pool |
| JP2015075349A (en) * | 2013-10-07 | 2015-04-20 | 中国電力株式会社 | Cooling device, and spent fuel storage pool including the same |
| JP2016006381A (en) * | 2014-06-20 | 2016-01-14 | 東京電力株式会社 | Spray facility for spent fuel pool |
| CN205016252U (en) * | 2015-08-27 | 2016-02-03 | 中国核电工程有限公司 | Real -time moisturizing device of spent fuel pool |
| CN205722809U (en) * | 2016-04-07 | 2016-11-23 | 上海核工程研究设计院 | A kind of spray cooling system for Nuclear Power Station's Exhausted Fuels pond |
-
2016
- 2016-04-07 CN CN201610216249.5A patent/CN105741889A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5488642A (en) * | 1994-08-22 | 1996-01-30 | Consolidated Edison Company Of New York, Inc. | Cooling system for spent fuel pool |
| CN103440891A (en) * | 2013-09-10 | 2013-12-11 | 华北电力大学 | Passive water supplementation spraying system of spent fuel pool |
| JP2015075349A (en) * | 2013-10-07 | 2015-04-20 | 中国電力株式会社 | Cooling device, and spent fuel storage pool including the same |
| JP2016006381A (en) * | 2014-06-20 | 2016-01-14 | 東京電力株式会社 | Spray facility for spent fuel pool |
| CN205016252U (en) * | 2015-08-27 | 2016-02-03 | 中国核电工程有限公司 | Real -time moisturizing device of spent fuel pool |
| CN205722809U (en) * | 2016-04-07 | 2016-11-23 | 上海核工程研究设计院 | A kind of spray cooling system for Nuclear Power Station's Exhausted Fuels pond |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060319A (en) * | 2018-05-29 | 2018-12-21 | 华北电力大学 | A kind of experimental rig and method for nuclear power station spent fuel reservoir nozzle sensibility |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE |
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