CN104183282B - Spent fuel pool based on design of external interference - Google Patents
Spent fuel pool based on design of external interference Download PDFInfo
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- CN104183282B CN104183282B CN201310191382.6A CN201310191382A CN104183282B CN 104183282 B CN104183282 B CN 104183282B CN 201310191382 A CN201310191382 A CN 201310191382A CN 104183282 B CN104183282 B CN 104183282B
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- heat transfer
- pond
- tank
- spent fuel
- transfer plate
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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 invention relates to a spent fuel pool which has capability of dealing with serious accidents and is based on the design idea of external interference. The structure of the spent fuel pool comprises a hot tank for storing newly-removed spend fuel, a cold tank for storing spend fuel which has been stored for a period of time and a collecting tank for collecting condensed water. Cooling water of the cold tank and cooling water of the collecting tank are communicated with each other through an opening at the bottom of a separator plate between the two tanks. Cooling water of the cold tank and cooling water of the hot tank are communicated with each other through a separator plate between the two tanks. A first heat transfer plate is slantly arranged above the hot tank, the cold tank and the collecting tank. A second heat transfer plate is slantly disposed on the outside of the collecting tank. The two heat transfer plates separate the spent fuel pool from an external interference tank. Under conditions of serious accidents, water is injected to the external interference tank from the outside world to form natural circulation in the spent fuel pool, and decay heat in the spent fuel pool is transferred to cooling water of the external interference tank through evaporation and condensation and is dissipated through heat transfer between the surface of the external interference tank and the environment. Thus, overheating, overpressure and hydrogen gathering at a fuel plant are prevented.
Description
Technical field
The present invention relates to reactor designing technique is and in particular to a kind of design of Spent Fuel Pool.
Background technology
The design of typical passive nuclear plant Spent Fuel Pool still continues to use traditional design, for similar to good fortune
The such long-term power cut-off incident of island nuclear power station, its coping strategy is：
Losing alternating current power supply（Factory's dispatch from foreign news agency and two diesel-driven generators）When, the thermal capacity of Chi Zhongshui can maintain
The cooling of fuel.The steam of pool surface evaporation is discharged in air outside factory by ad hoc release screen.Factory site side
The release concentration on boundary is the very little part of prescribed limits.During power plant's long-term power-off, the moisturizing of Spent Fuel Pool is from non-
The safety-related moisturizing joint of the Seismic of active containment cooling system obtains, and this joint is located at auxiliary factory
In room, operations staff come-at-able region when seething with excitement in pond.
Continue lose this unlikely event of normal Spent Fuel Pool cooling when, safety-related water level
Instrument makes master control room report to the police, and notifies operations staff to start moisturizing, and moisturizing makes water level in water pool be maintained at fuel stack
More than part at least 7 days.In beginning 72 hours, by safety-related water source moisturizing, at 72 hours to 7
During it, by Passive containment cooling system auxiliary water tank moisturizing.
In the case of similar to Fukushima nuclear power plant accident, the long-term cooling of Spent Fuel Pool is placed hope on passive
The auxiliary water tank of containment cooling system.
Spent Fuel Pool moisturizing in Spent Fuel Pool cooling system, and Passive containment cooling system
Moisturizing is required for personnel's manual operation related valve.When an accident occurs, valve operation area is also possible to radiate
Property too high and make personnel unsuitable close, cause moisturizing difficult.
If the moisturizing water yield requires to have exceeded safety-related water source, Spent Fuel Pool between 72 hours to 7 days
Moisturizing is provided by the additional storage water tank of Passive containment cooling system.But passive containment cooling system
System auxiliary storage tank is to need active pump to provide power.Although pump has Emergency diesel to power, in Quan Chang
It is likely that cannot run under dead electricity accident.
After accident 72 hours, in the event of beyond design basis accident, auxiliary diesel engine and auxiliary diesel are all
Cannot start, Passive containment cooling system circulating pump cannot will work because of dead electricity, passive peace
Full shell cooling system will lose cooling containment and the function to Spent Fuel Pool moisturizing, with accident process
Propulsion, once occurring fuel assembly to melt down and hydrogen release, relative closure is but not provided with the combustion of hydrogen facility that disappears
Hydrogen very likely in material Factory Building to be assembled, and hydrogen explosion occurs then.
Before the presence of the problems referred to above and Fukushima, Japan accident, industry has for the level of understanding of nuclear power plant's accident
Close, in view of the seriousness of No. four unit failures of Fukushima, Japan nuclear power plant is it is necessary to again be commented to these problems
Estimate, specific aim is analyzed, and proposed effective solution.
" foreign intervention " is that the various resources outside referring to using nuclear power plant's manpower and materials are carried out to nuclear power plant
Intervene thus alleviating the ability of damage sequence.Design of nuclear power plant Ji Yu " foreign intervention " thought seeks to
The contact channel of more fully nuclear power plant and external resource has just been pre-build, by this at the beginning of nuclear power station design
A little channels realize significantly more efficient " foreign intervention " when accident occurs.
The present invention is based on " foreign intervention " thought, is that Spent Fuel Pool reply major accident proposes and conscientiously may be used
The scheme of row.
Content of the invention
The purpose of the present invention is on the basis of the design of existing Spent Fuel Pool, in conjunction with " passive " with " outward
The design philosophy of portion's intervention ", provides a kind of new Spent Fuel Pool structure, to ensure under major accident
The safety of spent fuel storage system.
Technical scheme is as follows：The Spent Fuel Pool that one kind is designed based on " foreign intervention ", bag
Include for store the spentnuclear fuel newly drawing off hot pond, stored spentnuclear fuel after a while for storage
Cold drop, for collecting the collecting tank of condensed water, described hot pond, cold drop and collecting tank pass sequentially through dividing plate
Separate, the cooling water of cold drop and collecting tank passes through the lower partition open communication, cold drop and heat between two ponds
The cooling water in pond covers the dividing plate connection between two ponds；In the setting of Re Chi, cold drop and collecting tank inclined upward
First heat transfer plate, one end that the first heat transfer plate is located above hot pond is higher than the one end above collecting tank,
It is obliquely installed the second heat transfer plate in the outside of collecting tank, the first heat transfer plate and the second heat transfer plate are by spentnuclear fuel water
Pond is separated with foreign intervention pond.
Further, the Spent Fuel Pool being designed based on " foreign intervention " as above, wherein, described
Cold drop in storage spentnuclear fuel be the spentnuclear fuel having stored a refulling cycle.
Further, the Spent Fuel Pool being designed based on " foreign intervention " as above, wherein, described
Foreign intervention pond in cooling water water level be higher than the first heat transfer plate upper level.First heat transfer plate
Height and hot pond and cold drop liquid level between determine by the total amount of fuel type and storage and with reference to thermodynamic metering
Fixed.
Further, the Spent Fuel Pool being designed based on " foreign intervention " as above, wherein, described
The first heat transfer plate and the second heat transfer plate be steel plate.
Further, the Spent Fuel Pool being designed based on " foreign intervention " as above, wherein, in institute
It is respectively equipped with spent fuel storage rack, spent fuel storage rack bottom is provided with cooling in the hot pond stated and cold drop
Water inlet, top is provided with coolant outlet.
In addition, required being cooled down by the Spent Fuel Pool that pump and heat exchanger form under reactor nominal situation
Water system retains, and point pond storage and heat transfer plate setting were only lost efficacy and personnel in Spent Fuel Pool cooling system
When cannot be close, the measure making Spent Fuel Pool spontaneously form Natural Circulation and taking.
Beneficial effects of the present invention are as follows：The present invention by the spentnuclear fuel newly drawing off and has stored a period of time
Spentnuclear fuel carry out the storage of point pond, mark off the runner of Natural Circulation using thermal insulation board, tilted using two pieces
Steel plate Spent Fuel Pool is separated with foreign intervention pond, side plate forms collecting pit, top board with neighbouring dividing plate
Passage as spentnuclear fuel pond and the heat transfer of foreign intervention pond.Foreign intervention pond becomes ultimate heat sink, and can
Carrying out uninterrupted moisturizing by helicopter or remote control fire fighting truck for foreign intervention pond makes it be in full water shape all the time
State, spentnuclear fuel pond is internally formed Natural Circulation, by evaporation and coagulation by the waste heat in spentnuclear fuel pond
Derive it is ensured that in pond spentnuclear fuel safety.
Brief description
Fig. 1 is the structure principle chart of the Spent Fuel Pool of the present invention.
In figure, 1. hot pond 2. cold drop, 3. collecting tank 4. foreign intervention pond 5. dividing plate 6. dividing plate 7.
First heat transfer plate 8. second heat transfer plate 9. spent fuel storage rack
Specific embodiment
With reference to the accompanying drawings and examples the present invention is described in detail.
As shown in figure 1, provided by the present invention include using based on the Spent Fuel Pool that " foreign intervention " designs
In storage newly draw off spentnuclear fuel hot pond 1, for storage stored after a while（Such as one reloads week
Phase, usual 18 months）The cold drop 2 of spentnuclear fuel, for collecting the collecting tank 3 of condensed water.Described heat
Pass through dividing plate 6 between pond 1 and cold drop 2 to separate, cold drop 2 and collecting tank 3 pass through dividing plate 5 and separate.Cold drop 2
With the cooling water of collecting tank 3 passes through the dividing plate 5 lower openings connection between two ponds, cold drop 2 and hot pond 1
The dividing plate 6 that cooling water covers between two ponds connects.Set in the inclined upward of hot pond 1, cold drop 2 and collecting tank 3
Put the first heat transfer plate 7, one end that the first heat transfer plate 7 is located at hot pond 1 top is higher than positioned at collecting tank 3 top
One end, be easy to from hot pond 1 evaporation steam in the condensed condensing droplet of the first heat transfer plate 7 to collecting tank 3
Backflow.It is obliquely installed the second heat transfer plate 8, the first heat transfer plate 7 and the second heat transfer plate 8 in the outside of collecting tank 3
Spent Fuel Pool is separated with foreign intervention pond 4.Form collecting tank 3 between second heat transfer plate 8 and dividing plate 5
Scope.
Cooling water is filled, the water level of the cooling water in foreign intervention pond 4 is higher than the first biography in foreign intervention pond 4
The upper level of hot plate 7.In the side of the second heat transfer plate 8, the cooling water in foreign intervention pond 4 can be with
Cooling water in collecting tank is conducted heat.First heat transfer plate 7 and the second heat transfer plate 8 are steel plate it is ensured that just
While spending, beneficial to the transmission of heat.
The design of the features described above to spentnuclear fuel pond for the present invention, its objective is to keep traditional spentnuclear fuel pond to set
While meter, according to the Experience Feedback of Fukushima event, carry out tackling the improvement of major accident." keep original setting
Meter " refer to the scheme of the intensive storage of spentnuclear fuel, the manufacture of bunkering screen work, under normal operating condition
Cooling system and cleaning system do not change.
When occurring similar to Fukushima nuclear power station same case, i.e. long-term dead electricity and operations staff cannot be closely right
When spentnuclear fuel pond is intervened, the temperature in spentnuclear fuel pond can drastically raise（For ridge Australia spent nuclear fuel in nuclear power plant
Pond, in total loss component cooling water system（RRI）Or reactor and Spent Fuel Pool cooling system (PTR)
During pump, in the case of the storing fuel of 13 1/3 reactor cores, 65 DEG C of spentnuclear fuel pond initial temperature reaches full heap boiling
Need only to 7.5 hours）.Because the spentnuclear fuel in hot pond 1 has relatively higher releasing with respect to cold drop 2
Heat density, then seething with excitement first is occurred in hot pond 1, when boiling produces vapor and top board（First heat transfer plate 7）
Contact simultaneously carries out being condensed into droplet after heat exchange with the cold water in foreign intervention pond 4, and then droplet is tilting
Top board on collect and flow to be equally tilt side plate（Second heat transfer plate 8）, pushed up always in flow process
Plate cools down and finally flows into collecting tank 3, and the cooling water in collecting tank 3 is entered by the opening of dividing plate 5 bottom of conducting heat
Enter cold drop 2 bottom in irradiated fuel store pond and pass through the bottom inlet from spent fuel storage rack 9 for the Natural Circulation
Enter spent fuel storage rack to be heated by spentnuclear fuel, then flow out from the upper outlet of spent fuel storage rack 9,
Hence into cold drop 2 top, enter hot pond 1 through the top of dividing plate 6, due in its temperature relative thermal pond
Water temperature or low, therefore, the water body entering hot pond 1 from cold drop 2 can flow to hot pond 1 due to density contrast
Bottom, thus completing a complete cyclic process.Foreign intervention pond 4 becomes ultimate heat sink, and can
Carrying out uninterrupted moisturizing by helicopter or remote control fire fighting truck for foreign intervention pond 4 makes it be in full water shape all the time
State.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this to the present invention
The spirit and scope of invention.So, if these modifications and modification to the present invention belong to right of the present invention
Within the scope of requirement and its equivalent technology, then the present invention is also intended to comprise these changes and modification.
Claims (5)
1. a kind of Spent Fuel Pool being designed based on " foreign intervention " it is characterised in that：Including for
Store the hot pond (1) of spentnuclear fuel newly drawing off, store the cold of spentnuclear fuel after a while for storage
Pond (2), for collecting the collecting tank (3) of condensed water, described hot pond (1), cold drop (2) and
Collecting tank (3) passes sequentially through dividing plate and separates, and the cooling water of cold drop (2) and collecting tank (3) passes through two ponds
Between the connection of dividing plate (5) lower openings, the cooling water of cold drop (2) He Rechi (1) cover two ponds it
Between dividing plate (6) connection；In the setting of Re Chi (1), cold drop (2) and collecting tank (3) inclined upward
First heat transfer plate (7), one end that the first heat transfer plate (7) is located above hot pond (1) is higher than positioned at liquid collecting
One end above pond (3), is obliquely installed the second heat transfer plate (8), cold drop in the outside of collecting tank (3)
(2) form collecting tank between the dividing plate (5) and collecting tank (3) between and the second heat transfer plate (8)
(3) scope, the first heat transfer plate (7) and the second heat transfer plate (8) are by Spent Fuel Pool and foreign intervention
Pond (4) is separately.
2. the Spent Fuel Pool being designed based on " foreign intervention " as claimed in claim 1, its feature
It is：In described cold drop (2), the spentnuclear fuel of storage is the spentnuclear fuel having stored a refulling cycle.
3. the Spent Fuel Pool being designed based on " foreign intervention " as claimed in claim 1, its feature
It is：The water level of the cooling water in described foreign intervention pond (4) is higher than the upper of the first heat transfer plate (7)
Apparent height.
4. the spentnuclear fuel being designed based on " foreign intervention " as described in any one in claim 1-3
Pond it is characterised in that：Described the first heat transfer plate (7) and the second heat transfer plate (8) are steel plate.
5. the spentnuclear fuel being designed based on " foreign intervention " as described in any one in claim 1-3
Pond it is characterised in that：It is respectively equipped with irradiated fuel store in described hot pond (1) and cold drop (2)
Screen work (9), spent fuel storage rack (9) bottom is provided with cooling water inlet, and top is provided with cooling water and goes out
Mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191382.6A CN104183282B (en) | 2013-05-22 | 2013-05-22 | Spent fuel pool based on design of external interference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310191382.6A CN104183282B (en) | 2013-05-22 | 2013-05-22 | Spent fuel pool based on design of external interference |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104183282A CN104183282A (en) | 2014-12-03 |
| CN104183282B true CN104183282B (en) | 2017-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310191382.6A Active CN104183282B (en) | 2013-05-22 | 2013-05-22 | Spent fuel pool based on design of external interference |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6513426B2 (en) * | 2015-02-25 | 2019-05-15 | 三菱重工業株式会社 | Fuel storage facility |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08304586A (en) * | 1995-05-12 | 1996-11-22 | Toshiba Corp | Spent fuel storage pool and reactor well pool |
| JP2000056073A (en) * | 1998-08-05 | 2000-02-25 | Toshiba Corp | Spent fuel handling facility |
| CN102568622A (en) * | 2012-01-18 | 2012-07-11 | 中科华核电技术研究院有限公司 | Passive cooling system for cooling spent nuclear fuel in nuclear power plant |
| CN102831942A (en) * | 2012-08-28 | 2012-12-19 | 中广核工程有限公司 | Emergency cooling system of spent fuel pool of nuclear power station |
| CN103021487A (en) * | 2012-11-27 | 2013-04-03 | 中国核电工程有限公司 | Cooling and purifying system of spent fuel pool |
-
2013
- 2013-05-22 CN CN201310191382.6A patent/CN104183282B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08304586A (en) * | 1995-05-12 | 1996-11-22 | Toshiba Corp | Spent fuel storage pool and reactor well pool |
| JP2000056073A (en) * | 1998-08-05 | 2000-02-25 | Toshiba Corp | Spent fuel handling facility |
| CN102568622A (en) * | 2012-01-18 | 2012-07-11 | 中科华核电技术研究院有限公司 | Passive cooling system for cooling spent nuclear fuel in nuclear power plant |
| CN102831942A (en) * | 2012-08-28 | 2012-12-19 | 中广核工程有限公司 | Emergency cooling system of spent fuel pool of nuclear power station |
| CN103021487A (en) * | 2012-11-27 | 2013-04-03 | 中国核电工程有限公司 | Cooling and purifying system of spent fuel pool |
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| Publication number | Publication date |
|---|---|
| CN104183282A (en) | 2014-12-03 |
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