CN202102730U - Out-of-pile cooling and curing device of reactor core fusant in reactor severe accident and system - Google Patents
Out-of-pile cooling and curing device of reactor core fusant in reactor severe accident and system Download PDFInfo
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- CN202102730U CN202102730U CN2011201441111U CN201120144111U CN202102730U CN 202102730 U CN202102730 U CN 202102730U CN 2011201441111 U CN2011201441111 U CN 2011201441111U CN 201120144111 U CN201120144111 U CN 201120144111U CN 202102730 U CN202102730 U CN 202102730U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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Abstract
The utility model relates to an out-of-pile cooling and curing device of reactor core fusant in a reactor severe accident and a system, which comprise a hollow cooling and curing device casing with the opening top and a cooling channel arranged in the cooling and curing device casing. The cooling channel comprises a plurality of vertical sections which are arranged in the cooling and curing device casing and communicated with each other, and spaces for filling the fusant are formed among the outer walls of the vertical sections. The cooling and curing device casing comprises a coolant inlet arranged at the upper portion and a coolant outlet arranged at the upper portion, and the coolant inlet and the coolant outlet are communicated with the cooling channel. Under the condition of a severe accident, the reactor core fusant can flow in the spaces for filling the fusant, cooling water flows in the cooling channel, and the cooling water achieves conducting heat out in a saturation boiling mode through gasification of the water. The plurality of vertical sections are arranged in the cooling channel, thereby being capable of greatly increasing heat exchange area, guaranteeing that the fusant achieves cooling and curing within a certain time, and having the advantages of being simple in structure and fast in cooling speed.
Description
Technical field
The utility model relates to the safety equipment of nuclear power station, more particularly, relates to a kind of Apparatus and system that under reactor disaster, can carry out the out-pile cooling curing to the reactor core fused mass.
Background technology
Along with the maturation of technology, the improving constantly of the security of nuclear power station, the construction of nuclear power station little by little becomes China's important energy guarantee.In the present nuclear power station, the structure of nuclear reactor is: in containment, form reactor cavity, in the heap chamber, pressure vessel is set.When reactor generation major accident, the fused mass of reactor core can melt pressure vessel enclosure, and very serious nuclear leakage accident takes place.
At present, in order to prevent the leakage of reactor core fused mass, in typical abroad three generations's heap, used two kinds of reactor core fused mass out-pile cooling curing devices, also be the reactor core drip catcher, a kind of is French EPR1700, and a kind of is the VVER of Russia.
As shown in Figure 1, EPR1700 reactor core fused mass out-pile cooling curing device is to issue at pressure vessel 11 drainage channel 12 is set, and in the wide propagation chamber 13 of the arranged outside of pressure vessel 11.In use, behind the fused mass burn through low head, flow into lower chamber, treat that all fused mass flow into lower chamber after, the melted plug that fused mass can the burn through bottom, through drainage channel 12, fused mass flows into propagation chamber 13, is cooling off.What utilize is that propagation chamber 13 has large-area plane, and fused mass shakeouts on this plane under the effect of gravity.In this bottom, plane cooling-water duct is arranged, can realize the cooling of fused mass and prevent that planar materials is by burn through.In order to satisfy the fused mass restriction of cool time, the reactor core drip catcher of EPR has increased the top and has flooded the mode of cooling, thereby has accelerated the cooling velocity of fused mass greatly.
Generally speaking, EPR1700 reactor core fused mass out-pile cooling curing device adopts the very big plane of area to carry out fused mass and shakeouts, and purpose is the film-cooled heat that increases fused mass, accelerates the cooling velocity of fused mass.To occupy very big area in containment vessel bottom and space yet such design means, increase the funds of difficulty of design and construction.And the fusion on this plane is shakeout, and is under action of gravity, to carry out; Can effectively shakeout, be the key that can design make it, yet high-temperature molten shakeouts in the space that reaches hundreds of square metres of areas like this; Improve design difficulty, also reduced the reliability of equipment.
As shown in Figure 2, the structure of VVER reactor core fused mass out-pile cooling curing device is comparatively simple.Below foundation ditch 21 internal reaction core pressure vessels 22, be placed with barrel containers 23, the expendable material 24 that can melt is housed in the container.Behind reactor core fused mass burn through low head, under the effect of gravity, flow into the reactor core fused mass out-pile cooling curing device that place the bottom, and interact with the interior expendable material 24 of device.Fused mass is in the process of melting expendable material 24, and its temperature reduces gradually.There is chilled water 25 outside of device, can reduce barrel containers 23 wall surface temperatures, takes away the fused mass decay heat.Thereby realize the cooling curing of fused mass.
VVER's is simple in structure, is located immediately at reactor pressure vessel 22 bottoms, but because fused mass in barrel containers 23 inside, only relies on the wall of external container to take away the decay heat of fused mass, heat transfer area causes heat transfer capacity little for a short time.Therefore, cooling curing is needed chronic, thereby unfavorable to the fast processing of post incident.
The utility model content
The technical matters that the utility model will solve is, a kind of out-pile cooling curing device simple in structure, cooled reactor major accident reactor core fused mass fast is provided.
Another technical matters that the utility model will solve is, a kind of out-pile cooling curing simple in structure, cooled reactor major accident reactor core fused mass fast system is provided.
The utility model solves the technical scheme that its technical matters adopted: construct a kind of reactor disaster reactor core fused mass out-pile cooling curing device, comprise the hollow cooling curing device shell of open-top and be arranged on the cooling duct in the said cooling curing device shell;
Said cooling duct comprises the plurality of vertical section that is arranged in the said cooling curing device shell, is interconnected; Form the fused mass packing space between the said vertical section outer wall;
Said cooling curing device shell comprises coolant inlet that is arranged on the bottom and the coolant outlet that is arranged on top; Said coolant inlet and coolant outlet are connected with said cooling duct.
In the reactor disaster reactor core fused mass out-pile cooling curing device of the utility model, said cooling duct is surrounded by the dividing plate and the inwall of said cooling curing device shell that are arranged in the said cooling curing device shell jointly.
In the reactor disaster reactor core fused mass out-pile cooling curing device of the utility model, said dividing plate comprise the base plate parallel with said cooling curing device outer casing bottom and with the parallel side plate of said cooling curing device side wall of outer shell;
Form horizontal cooling duct between said base plate and the said cooling curing device outer casing bottom, vertical section of the said cooling duct that said side plate surrounds is passed through said horizontal cooling duct connection, and said vertical section top seal.
In the reactor disaster reactor core fused mass out-pile cooling curing device of the utility model, said vertical section the open-top that forms between the sidewall of said side plate and said cooling curing device shell, and be communicated with said coolant outlet.Vertical section sidewall of said cooling duct is provided with the duct, and is communicated with said coolant outlet.
In the reactor disaster reactor core fused mass out-pile cooling curing device of the utility model, said horizontal cooling duct is communicated with said coolant inlet; Said cooling medium gets into the vertical section of said cooling duct through said horizontal cooling duct.
In the reactor disaster reactor core fused mass out-pile cooling curing device of the utility model, the sidewall of said cooling duct inwardly comprises exotic material layer and steel plate layer successively from said fused mass packing space.
In the reactor disaster reactor core fused mass out-pile cooling curing device of the utility model, said fused mass packing space is to wait fat pipe.
The utility model solves the technical scheme that its technical matters adopted: a kind of reactor disaster reactor core fused mass out-pile cooling curing system also is provided, comprises pressure vessel, be arranged on the flow-guiding structure and the material-changing water tank of said pressure vessel below; It is characterized in that, also comprise be arranged on said flow-guiding structure below, like the above-mentioned reactor core of reactor disaster arbitrarily fused mass out-pile cooling curing device; The open top and the said deflector of said cooling curing device shell join; Said coolant inlet and said material-changing water tank bottom through by-pass valve control join, the top of said coolant outlet and said material-changing water tank joins.
Enforcement the utlity model has following beneficial effect: under the major accident situation; The reactor core fused mass can flow in the fused mass packing space of out-pile cooling curing device and cool off; Simultaneously, cooling medium (like chilled water) flows in the cooling duct, and chilled water is with the mode of saturation boiling; Through the vaporization of water, realize the derivation of heat; Because the cooling duct is provided with the plurality of vertical section, thereby can increase heat interchanging area greatly, thereby the assurance fused mass is realized cooling curing within a certain period of time, has advantage simple in structure, that cooling velocity is fast.
In addition, out-pile cooling curing device can be prefabricated in the factory, the on-the-spot installation, thus avoided the big problem of on-site installation work amount; And the vertical hop count amount of heat radiation runner can adjust as required, thus heat transfer area can be as required by how much quantity increases and decreases, needs that can flexible adaptation different capacity reactor.In addition, because heat transfer area is to be that the basis changes with the unit, therefore, when experimental verification is studied, need carry out the modelling experiment of whole device, thereby simplify the complexity of confirmatory experiment research as EPR and VVER.
Description of drawings
To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:
Fig. 1 is the structural representation of the EPR1700 of the utility model prior art;
Fig. 2 is the structural representation of the VVER of the utility model prior art;
Fig. 3 is the structural representation of the utility model reactor disaster reactor core fused mass out-pile cooling curing embodiment of system;
Fig. 4 is that synoptic diagram is arranged in the cooling duct of the utility model reactor disaster reactor core fused mass out-pile cooling curing device;
Fig. 5 is the synoptic diagram of sidewall of the cooling duct of the utility model reactor disaster reactor core fused mass out-pile cooling curing device;
Fig. 6 is the cooling procedure synoptic diagram of the cooling duct of the utility model reactor disaster reactor core fused mass out-pile cooling curing device.
Embodiment
As shown in Figure 3; An embodiment of the reactor disaster reactor core fused mass out-pile cooling curing system of the utility model comprises pressure vessel 110, is arranged on flow-guiding structure 120, material-changing water tank 130, reactor disaster reactor core fused mass out-pile cooling curing device 140 of pressure vessel 110 belows etc.Certainly, this system also comprises conventional design such as some connecting tubes, foundation ditch, does not give unnecessary details at this.Under major accident, reactor core fused mass 160 flow in the out-pile cooling curing device 140 through flow-guiding structure 120 and carries out cooling curing.
As shown in the figure, this reactor disaster reactor core fused mass out-pile cooling curing device 140 comprises the hollow cooling curing device shell 141 of open-top and is arranged on the cooling duct 142 in the cooling curing device shell 141.This cooling curing device shell 141 comprises coolant inlet 143 that is arranged on the bottom and the coolant outlet 144 that is arranged on top.As shown in the figure, this coolant inlet 143 is connected with the bottom of material-changing water tank 130 through pipeline, valve 150, cools off as cooling medium thereby can insert chilled water.Certainly, this coolant inlet 143 can also be connected with other low-temperature receivers, inserts other cooling mediums.This coolant outlet 144 joins with the top of material-changing water tank 130, carries out condensation in the material-changing water tank 130 thereby can be back to through the water vapor of heat exchange vaporization.Certainly, coolant outlet 144 also can be connected to other place and carries out condensation.This material-changing water tank 130 can be connected with the external refrigeration device, and then the chilled water in the material-changing water tank 130 is cooled off, and takes away heat.
As shown in the figure, this cooling duct 142 comprises the plurality of vertical section that is arranged in the cooling curing device shell 141, is interconnected.These vertically form fused mass packing space 145 between outer walls of section, thereby make fused mass 160 cooling of can flowing within it.As shown in Figure 4, the fused mass packing space 145 of present embodiment is to wait fat pipe, thereby can guarantee evenly flowing of fused mass 160, guarantees cooling velocity, thereby assurance fused mass 160 is realized cooling curing within a certain period of time.Because the cooling duct area reaches, therefore, cooling velocity is higher, and it is controlled to cut cooling velocity.
In the present embodiment, this cooling duct 142 is surrounded by the dividing plate and the inwall of cooling curing device shell 141 that are arranged in the cooling curing device shell 141 jointly.This dividing plate comprise the base plate parallel with cooling curing device shell 141 bottoms and with the side plate of cooling curing device shell 141 parallel sidewalls.Form horizontal cooling duct 142 between this base plate and cooling curing device shell 141 bottoms; Vertical section of the cooling duct 142 that this side plate surrounds through 142 connections of horizontal cooling duct; And vertical section middle top seal, thereby avoid fused mass 160 to fall in the cooling duct 142.This horizontal cooling duct 142 is communicated with coolant inlet 143, inserts cooling medium.
Further; Sidewall in vertical section also is provided with the duct; And be communicated with coolant outlet 143, thereby the steam that when the cooling fused mass, produces can discharge through the duct on the sidewall, and at last the coolant outlet through top in pipeline is got back to cooling water tank 130.Understandable, this duct gets opening setting can be downward, thereby avoid the fused mass passing hole channel to enter in vertical section, certainly, can also avoid fused mass to enter in vertical section through other structures that can block the duct.
Vertical section the open-top that forms between the sidewall of this side plate and cooling curing device shell 141; And be communicated with coolant outlet 144; Thereby can be discharged to material-changing water tank 130 through pipeline through coolant outlet 144 after the cooling medium heat exchange; Rely on active or non-active means with heat discharge in environment, thereby heat is taken out of safely.
As shown in Figure 5, in the present embodiment, the sidewall of this cooling duct 142 inwardly comprises 147 layers of exotic material layer 146 and steel plates successively from fused mass packing space 145.The bang path of heat is to pass through 147 layers of exotic material layer 146, steel plates from high-temperature molten 160, is delivered to the cooling medium (like chilled water) in the cooling duct 142.Chilled water through the vaporization of water, is realized the derivation of heat with the mode of saturation boiling.
When normal operation, out-pile cooling curing device 140 is shown in Fig. 6 a; When reacting the heap major accident, fused mass 160 is filled full fused mass packing space 145, shown in Fig. 6 b through fused mass packing space 145 interior the flowing that flow-guiding structure 120 gets into out-pile cooling curing device 140; Introduce cooling medium through coolant inlet 143 then, cool off, shown in Fig. 6 c; After heat exchange, accomplish cooling, realize the curing of fused mass 160, shown in Fig. 6 d.
Claims (9)
1. a reactor disaster reactor core fused mass out-pile cooling curing device is characterized in that, comprises the hollow cooling curing device shell of open-top and is arranged on the cooling duct in the said cooling curing device shell;
Said cooling duct comprises the plurality of vertical section that is arranged in the said cooling curing device shell, is interconnected; Form the fused mass packing space between the said vertical section outer wall;
Said cooling curing device shell comprises coolant inlet that is arranged on the bottom and the coolant outlet that is arranged on top; Said coolant inlet and coolant outlet are connected with said cooling duct.
2. reactor disaster reactor core fused mass out-pile cooling curing device according to claim 1 is characterized in that, said cooling duct is surrounded by the dividing plate and the inwall of said cooling curing device shell that are arranged in the said cooling curing device shell jointly.
3. reactor disaster reactor core fused mass out-pile cooling curing device according to claim 2; It is characterized in that, said dividing plate comprise the base plate parallel with said cooling curing device outer casing bottom and with the parallel side plate of said cooling curing device side wall of outer shell;
Form horizontal cooling duct between said base plate and the said cooling curing device outer casing bottom, vertical section of the said cooling duct that said side plate surrounds is passed through said horizontal cooling duct connection, and said vertical section top seal.
4. reactor disaster reactor core fused mass out-pile cooling curing device according to claim 3; It is characterized in that; Said vertical section the open-top that forms between the sidewall of said side plate and said cooling curing device shell, and be communicated with said coolant outlet.
5. reactor disaster reactor core fused mass out-pile cooling curing device according to claim 3 is characterized in that vertical section sidewall of said cooling duct is provided with the duct, and is communicated with said coolant outlet.
6. reactor disaster reactor core fused mass out-pile cooling curing device according to claim 3 is characterized in that said horizontal cooling duct is communicated with said coolant inlet; Said cooling medium gets into the vertical section of said cooling duct through said horizontal cooling duct.
7. according to each described reactor disaster reactor core fused mass out-pile cooling curing device of claim 1-6, it is characterized in that the sidewall of said cooling duct inwardly comprises exotic material layer and steel plate layer successively from said fused mass packing space.
8. according to each described reactor disaster reactor core fused mass out-pile cooling curing device of claim 1-6, it is characterized in that said fused mass packing space is to wait fat pipe.
9. reactor disaster reactor core fused mass out-pile cooling curing system comprises pressure vessel, is arranged on the flow-guiding structure and the material-changing water tank of said pressure vessel below; It is characterized in that, also comprise be arranged on said flow-guiding structure below, like each described reactor disaster reactor core fused mass out-pile cooling curing device of claim 1-8; The open top and the said deflector of said cooling curing device shell join; Said coolant inlet and said material-changing water tank bottom through by-pass valve control join, the top of said coolant outlet and said material-changing water tank joins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201441111U CN202102730U (en) | 2011-05-09 | 2011-05-09 | Out-of-pile cooling and curing device of reactor core fusant in reactor severe accident and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201441111U CN202102730U (en) | 2011-05-09 | 2011-05-09 | Out-of-pile cooling and curing device of reactor core fusant in reactor severe accident and system |
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| CN202102730U true CN202102730U (en) | 2012-01-04 |
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| CN2011201441111U Expired - Lifetime CN202102730U (en) | 2011-05-09 | 2011-05-09 | Out-of-pile cooling and curing device of reactor core fusant in reactor severe accident and system |
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| CN (1) | CN202102730U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103377723A (en) * | 2012-04-27 | 2013-10-30 | 上海核工程研究设计院 | Type-III out-of-core melt retention device after nuclear power station accidents |
| CN103377722A (en) * | 2012-04-27 | 2013-10-30 | 上海核工程研究设计院 | V-shaped reactor external melt retention device used after nuclear power plant accident |
| CN103377721A (en) * | 2012-04-27 | 2013-10-30 | 上海核工程研究设计院 | Type-II out-of-core melt retention device after nuclear power station accidents |
| CN103440886A (en) * | 2013-08-20 | 2013-12-11 | 上海核工程研究设计院 | Device for increasing critical heat flux density of outer wall surface of pressure vessel |
| CN103578583A (en) * | 2013-10-24 | 2014-02-12 | 清华大学 | Boiling heat transfer enhancement runner outer shell with flow guide component |
| CN108597625A (en) * | 2018-05-08 | 2018-09-28 | 西安交通大学 | A kind of experimental provision for studying fusant migratory behaviour in lead base reactor cluster channel |
| CN111386577A (en) * | 2018-11-01 | 2020-07-07 | 原子能设计股份公司 | Method and control system for cooling nuclear reactor core melt |
| CN114005555A (en) * | 2021-10-22 | 2022-02-01 | 中国原子能科学研究院 | Reactor and reactor core melt collecting device thereof |
| CN115579158A (en) * | 2022-09-09 | 2023-01-06 | 中国核动力研究设计院 | Reactor core melt fragment cooling device |
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2011
- 2011-05-09 CN CN2011201441111U patent/CN202102730U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103377723A (en) * | 2012-04-27 | 2013-10-30 | 上海核工程研究设计院 | Type-III out-of-core melt retention device after nuclear power station accidents |
| CN103377722A (en) * | 2012-04-27 | 2013-10-30 | 上海核工程研究设计院 | V-shaped reactor external melt retention device used after nuclear power plant accident |
| CN103377721A (en) * | 2012-04-27 | 2013-10-30 | 上海核工程研究设计院 | Type-II out-of-core melt retention device after nuclear power station accidents |
| CN103440886B (en) * | 2013-08-20 | 2016-06-22 | 上海核工程研究设计院 | Improve the device of pressure vessel outside wall surface critical heat flux density |
| CN103440886A (en) * | 2013-08-20 | 2013-12-11 | 上海核工程研究设计院 | Device for increasing critical heat flux density of outer wall surface of pressure vessel |
| CN103578583A (en) * | 2013-10-24 | 2014-02-12 | 清华大学 | Boiling heat transfer enhancement runner outer shell with flow guide component |
| CN103578583B (en) * | 2013-10-24 | 2016-02-10 | 清华大学 | A kind of enhanced boiling heat transfer runner shell body with air guide |
| CN108597625A (en) * | 2018-05-08 | 2018-09-28 | 西安交通大学 | A kind of experimental provision for studying fusant migratory behaviour in lead base reactor cluster channel |
| CN111386577A (en) * | 2018-11-01 | 2020-07-07 | 原子能设计股份公司 | Method and control system for cooling nuclear reactor core melt |
| CN111386577B (en) * | 2018-11-01 | 2023-07-07 | 原子能设计股份公司 | Nuclear reactor core melt cooling method and nuclear reactor core melt cooling control system |
| CN114005555A (en) * | 2021-10-22 | 2022-02-01 | 中国原子能科学研究院 | Reactor and reactor core melt collecting device thereof |
| CN114005555B (en) * | 2021-10-22 | 2024-02-20 | 中国原子能科学研究院 | Reactor and reactor core melt collecting device thereof |
| CN115579158A (en) * | 2022-09-09 | 2023-01-06 | 中国核动力研究设计院 | Reactor core melt fragment cooling device |
| CN115579158B (en) * | 2022-09-09 | 2023-08-22 | 中国核动力研究设计院 | Reactor core melt piece cooling device |
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Address after: 518000 Guangdong province Futian District Shangbu Road West of the city of Shenzhen Shenzhen science and technology building 15 layer (1502-1504, 1506) Patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Patentee after: China General Nuclear Power Corporation Address before: 518000 Guangdong, Futian District, Yitian Road, building A, block, building on the whole floor of A1301-1320 13 Patentee before: Zhongkehua Nuclear Power Technology Institute Co., Ltd. Patentee before: China Guangdong Nuclear Power Group Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20120104 |
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| CX01 | Expiry of patent term |