CN205722809U - A kind of spray cooling system for Nuclear Power Station's Exhausted Fuels pond - Google Patents
A kind of spray cooling system for Nuclear Power Station's Exhausted Fuels pond Download PDFInfo
- Publication number
- CN205722809U CN205722809U CN201620285427.5U CN201620285427U CN205722809U CN 205722809 U CN205722809 U CN 205722809U CN 201620285427 U CN201620285427 U CN 201620285427U CN 205722809 U CN205722809 U CN 205722809U
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- Prior art keywords
- spray
- nuclear power
- cooling system
- pond
- power station
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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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- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
This utility model provides a kind of spray cooling system for Nuclear Power Station's Exhausted Fuels pond, including 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.The spray cooling system for Nuclear Power Station's Exhausted Fuels pond that this utility model 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.
Description
Technical field
This utility model relates to cooling field, Nuclear Power Station's Exhausted Fuels pond, is specifically related to a kind of for the weary combustion of nuclear power station
The spray cooling system in material pond.
Background technology
In traditional pressurized-water reactor nuclear power plant, in each fuel recycle latter stage, will draw off from reactor core and reach certain
The irradiated fuel assembly of burn-up level, 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, is used for depositing and draws off from reactor core
Irradiated fuel assembly.Before irradiated fuel assembly outward transport, decay heat will be produced in pond always；Particularly with
The irradiated fuel assembly just drawn off, its decay heat produced is bigger.Therefore, usually spentnuclear fuel pond configuration cooling
System, relies on pump and heat exchanger that water is circulated cooling, prevents accumulation of heat from threatening fuel safety,
Also the water layer thickness avoiding the evaporation of water excess to cause fuel to cover can not provide enough radiation for operator
Protection.Meanwhile, spentnuclear fuel pond generally uses antidetonation I class formation to design, safe shutdown earthquake (SSE) operating mode
Under will not be damaged and cause water to be lost in a large number.
The design of existing pressurized-water reactor nuclear power plant spentnuclear fuel pond cooling system, under normal circumstances rely on safe level or
The pump of non-security level and heat exchanger, rely on the thermal capacitance of water itself when losing normal cooling, and system sets
Emergence compensating water interface after the accident put, all can guarantee that the coldest of spentnuclear fuel pond under design basis accident operating mode
But.But for extreme accident conditions, the such as attack of terrorism or aircraft impact, water will be the most a large amount of
Run off, cause irradiated fuel assembly to be rapidly heated the most exposed.If one can be designed be totally independent of former cooling system
The spentnuclear fuel pond spray system of system, will be effectively improved fuel safety and power plant safety.
Utility model content
This utility model, for the deficiencies in the prior art, proposes a kind of spray for Nuclear Power Station's Exhausted Fuels pond cold
But system.
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 spraying house steward and spray arm；Described spray arm is from described spray
Drenching and pick out on house steward, described spray house steward comes from same water source or from different water sources.
Preferably, the water tender outside pond, water tank or factory in spray water source is nuclear power plant.
Preferably, described instrument includes flow instrument, for the flow of monitoring 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
Operation.
Compared with prior art, this utility model has the advantages that
1, the spray cooling system for Nuclear Power Station's Exhausted Fuels pond that this utility model provides, it is possible to be completely independent
In traditional spentnuclear fuel pond cooling system, under the extreme accident conditions that pool water within moment loses in a large number, maintain combustion
Material cooling, it is ensured that the safety of fuel.
2, the spray cooling system for Nuclear Power Station's Exhausted Fuels pond that this utility model provides, in extreme accident work
Under condition, rely on pump to provide water source driving force, provide cooling by spray system for spentnuclear fuel pond, it is ensured that fuel
Safety.
3, the spray cooling system for Nuclear Power Station's Exhausted Fuels pond that this utility model provides, with traditional core power station
The feature of spentnuclear fuel pond cooling system is different, and traditional irradiated fuel assembly type of cooling is under water submerged state
Flow circuit cooling, this utility model then directly provides spraying cooling water for irradiated fuel assembly, relies on water
The decay heat that fuel produces is taken away in evaporation, prevents fuel exposed or damages.
Accompanying drawing explanation
Fig. 1 is the Nuclear Power Station's Exhausted Fuels pond spray cooling system (spray meeting this utility model preferred embodiment
Pipeline is arranged in spentnuclear fuel pond surrounding) general flow chart.
Fig. 2 is the Nuclear Power Station's Exhausted Fuels pond spray cooling system (spray meeting this utility model preferred embodiment
Pipeline is arranged in both sides, spentnuclear fuel pond) general flow chart.
Wherein, 1 spray water source；2 pump inlet isolating valves；3 spray pumps；4 pump discharge isolating valves；5
Flow instrument；6 pump outlet check valve；7 spray house stewards；8--nozzle
Detailed description of the invention
Understandable for enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent from, below with AP system
As a example by row nuclear power station, in conjunction with the drawings and specific embodiments, this utility model is described in further detail.
As illustrated in fig. 1 and 2, the spray cooling system for Nuclear Power Station's Exhausted Fuels pond includes spray pipe, spray
Mouth 8, pump 3 and corresponding valve and instrument；Wherein, described spray pipe is arranged in the four of Spent Fuel Pool
All (as shown in Figure 1) or relative both sides (as shown in Figure 2).
Preferably, described spray pipe includes spraying house steward 7 and spray arm；Described spray arm is from described
Picking out on spray house steward 7, described spray house steward 7 comes from same water source or from different water sources.
Preferably, the water tender outside pond, water tank or factory in spray water source 1 is nuclear power plant.
Preferably, described instrument includes flow instrument 5, for the flow of monitoring 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
Operation.
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 spentnuclear fuel
The thing both sides in pond, two spray house stewards are coupled with on-site fire water box and passive containment cooling water
Case.Under extreme accident conditions, when unexpected emptying occurs in spentnuclear fuel pond, open pump inlet isolating valve 2 He
Pump discharge isolating valve 4, starts pump 3, starts spentnuclear fuel pond is carried out spraying cooling；When needing not continue to spray,
Termination of pumping 3, closes 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, at extreme accident conditions
Under, rely on pump to provide water source driving force, provide cooling by spray system for spentnuclear fuel pond, it is ensured that fuel is pacified
Entirely.
3, the spray cooling system for Nuclear Power Station's Exhausted Fuels pond that the present embodiment provides, weary with traditional core power station
The feature of fuel tank cooling system is different, and traditional irradiated fuel assembly type of cooling is under water submerged state
Flow circuit cools down, and this utility model then directly provides spraying cooling water for irradiated fuel assembly, relies on the steaming of water
Hair band walks the decay heat that fuel produces, and prevents fuel exposed or damages.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is
With the difference of other embodiments, between each embodiment, identical similar portion sees mutually.For
For system disclosed in embodiment, owing to corresponding to the method disclosed in Example, so the comparison described is simple
Single, relevant part sees method part and illustrates.
Each specifically should being used for can be used different methods to realize described merit by those skilled in the art
Can, but this realization is it is not considered that exceed scope of the present utility model.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to utility model
The spirit and scope of utility model.So, if these amendments of the present utility model and modification belong to this practicality
Within the scope of novel claim and equivalent technologies thereof, then this utility model be also intended to include these change and
Including 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 four of Spent Fuel Pool
All 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 spraying house steward and spray arm；Described spray arm picks out from described spray house steward,
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 pond, water tank or factory in nuclear power plant.
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 the flow of monitoring 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 |
|---|---|---|---|
| CN201620285427.5U CN205722809U (en) | 2016-04-07 | 2016-04-07 | A kind of spray cooling system for Nuclear Power Station's Exhausted Fuels pond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620285427.5U CN205722809U (en) | 2016-04-07 | 2016-04-07 | A kind of spray cooling system for Nuclear Power Station's Exhausted Fuels pond |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205722809U true CN205722809U (en) | 2016-11-23 |
Family
ID=57309074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620285427.5U Active CN205722809U (en) | 2016-04-07 | 2016-04-07 | A kind of spray cooling system for Nuclear Power Station's Exhausted Fuels pond |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205722809U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105741889A (en) * | 2016-04-07 | 2016-07-06 | 上海核工程研究设计院 | Spray cooling system for spent fuel pool of nuclear power station |
| CN107146645A (en) * | 2017-06-23 | 2017-09-08 | 西安交通大学 | A kind of npp safety shell spray system sprays performance test apparatus |
| CN109248798A (en) * | 2018-09-21 | 2019-01-22 | 上海核工程研究设计院有限公司 | The experimental rig and method of influence of the tube socket to spray flow Density Distribution on a kind of research irradiated fuel assembly |
-
2016
- 2016-04-07 CN CN201620285427.5U patent/CN205722809U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105741889A (en) * | 2016-04-07 | 2016-07-06 | 上海核工程研究设计院 | Spray cooling system for spent fuel pool of nuclear power station |
| CN107146645A (en) * | 2017-06-23 | 2017-09-08 | 西安交通大学 | A kind of npp safety shell spray system sprays performance test apparatus |
| CN107146645B (en) * | 2017-06-23 | 2023-04-11 | 西安交通大学 | Nuclear power plant's containment spraying system sprays performance test device |
| CN109248798A (en) * | 2018-09-21 | 2019-01-22 | 上海核工程研究设计院有限公司 | The experimental rig and method of influence of the tube socket to spray flow Density Distribution on a kind of research irradiated fuel assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Patentee before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE |