CN202650559U - Metal insulation device capable of achieving external cooling of reactor pressure vessel - Google Patents
Metal insulation device capable of achieving external cooling of reactor pressure vessel Download PDFInfo
- Publication number
- CN202650559U CN202650559U CN2012202675135U CN201220267513U CN202650559U CN 202650559 U CN202650559 U CN 202650559U CN 2012202675135 U CN2012202675135 U CN 2012202675135U CN 201220267513 U CN201220267513 U CN 201220267513U CN 202650559 U CN202650559 U CN 202650559U
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- pressure vessel
- metal insulation
- metallic insulation
- coolant
- reactor pressure
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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 utility model relates to the technical field of alleviation of serious accidents of a reactor, and particularly discloses a metal insulation device capable of achieving external cooling of a reactor pressure vessel. The metal insulation device capable of achieving external cooling of the reactor pressure vessel comprises a metal insulation layer arranged on the outer portion of a pressure vessel at intervals, a coolant inlet is arranged in the bottom of the metal insulation layer, a side wall of the upper end of the metal insulation layer is provided with a coolant outlet, and the coolant inlet and the coolant outlet are respectively provided with an inlet assembly and a cover board through hinges. By utilization of gaps between the pressure vessel and the metal insulation device and at the same time by the installation of the coolant inlet and the coolant outlet in the upper part and the lower part of the metal insulation layer, a flow channel of the coolant is formed to achieve the external cooling of the reactor pressure vessel and heat generated by an infusion reactor core in the reactor pressure vessel can be timely discharged, thereby integrity of the reactor pressure vessel can be guaranteed; a lining plate can prevent the coolant from leaking from the gaps among blocks of the metal insulation layer and simultaneously can increase the load bearing strength of the integral structure of the metal insulation layer.
Description
Technical field
The utility model belongs to reactor disaster mitigation technique field, is specifically related to a kind of reactor pressure vessel metal heat preservation structure.
Background technology
The effect of reactor pressure vessel metallic insulation mainly is the thermal loss that reduces reactor pressure vessel in the pressurized water reactor, guarantees the environment temperature of containment.When core melt down accident occured, reactor fuel can be fallen into the pressure vessel bottom, therefore need to make cooling medium continue fast the cooling low head, guaranteed the integrality of low head, thereby avoided radiomaterial to leak.
Existing metallic insulation is not reserved coolant flow passages, so cooling medium can't enter, and can't realize core melt down accident is alleviated, the external refrigeration of reactor pressure vessel in the time of can not realizing reactor core melting under the major accident operating mode.When adopting the coolant flow passages design, existing heat-insulation layer suspension type is installed and can't be satisfied the installation strength requirement.In addition, metallic insulation structure of the prior art generally all is block overlap joint, has the slit between piece and the piece, and out-of-date can the generation of coolant flow revealed.
Summary of the invention
The purpose of this utility model is to provide a kind of can making in the ring cavity of cooling medium between heat-insulation layer and reactor pressure vessel to flow through, but takes away the metal heat preservation device of the realization response core pressure vessel external refrigeration of the heat that the melting reactor core produces in the reactor pressure vessel.
The realization the technical solution of the utility model is as follows:
But a kind of metal heat preservation device of realization response core pressure vessel external refrigeration, it comprises the metallic insulation that is spaced apart and arranged in the pressure vessel outside, described metallic insulation bottom is provided with coolant entrance, and metallic insulation upper end sidewall is provided with coolant outlet; Described coolant entrance and exit are respectively by hinged import assembly and the cover plate of being provided with.
But in the metal heat preservation device of above-mentioned realization response core pressure vessel external refrigeration, be provided with liner plate in the described metallic insulation, this liner plate closely is fixedly installed on the metallic insulation inwall, and the position of this corresponding coolant entrance in liner plate bottom is provided with opening simultaneously.
But in the metal heat preservation device of above-mentioned realization response core pressure vessel external refrigeration, described import assembly comprises the fishplate bar that is fixedly installed on metallic insulation bottom coohng agent porch, form cavity, this cavity bottom is provided with opening, the hinged installation kickboard of opening part.
But in the metal heat preservation device of above-mentioned realization response core pressure vessel external refrigeration, be fixed with brace summer on the lateral wall of described metallic insulation, exterior bottom is fixed with the metallic support post.
The obtained beneficial effect of the present invention is as follows: utilize the gap between pressure vessel and the metallic insulation, simultaneously locate up and down to arrange the cooling medium gateway at metallic insulation, form coolant flow passages, realized the external refrigeration of reactor pressure vessel, the heat that melting reactor core in the reactor pressure vessel produces is derived in time, thereby guaranteed the integrality of reactor pressure vessel; Liner plate further is set in metallic insulation, prevents cooling medium from the piece of metallic insulation and the gap leakage between the piece, simultaneously so that the integrally-built loading strength increase of metallic insulation; Adopt simultaneously metallic support pipe and metallic support post to whole metallic insulation metal outer integrated support, when having guaranteed coolant flow, the installation of whole metal heat preservation device is firm.
Description of drawings
But Fig. 1 is the metal heat preservation apparatus structure synoptic diagram of realization response core pressure vessel external refrigeration;
Among the figure: 1. metallic insulation; 2. pressure vessel; 3. liner plate; 4. brace summer; 5. concrete walls; 6. import assembly; 7. reactor supporting; 8. kickboard; 9. fishplate bar; 10. cover plate; 11. metallic support post.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
As shown in Figure 1, pressure vessel 2 is by reactor supporting 7 fixed installations, and metallic insulation 1 is positioned at pressure vessel 2 outsides, has certain interval between the two, forms ring cavity.As the prior art, the form that metallic insulation 1 adopts piece to connect, so can have the slit between piece and the piece.In order to prevent the gap leakage chilled water, and improve the loading strength of whole metallic insulation 1, at metallic insulation 1 installed inside liner plate 3, so that chilled water can not expose from the slit.
In order to allow the gap of chilled water between bottom feed pressure container 1 and metallic insulation 1, at metallic insulation 1 and liner plate 3 bottom openings, as the cooling water inlet.The porch is equipped with import assembly 6, as shown in Figure 1, this import assembly 6 comprises four fishplate bars 9 that are fixedly connected with metallic insulation 1 opening part, and these four fishplate bars 9 form the rectangular parallelepiped cavity, this cavity bottom has two kickboard openings, adopts articulated manner that kickboard 8 is installed at each opening part.Like this, normally under operation and the earthquake operating mode, kickboard 8 relies on gravity can not produce mistake and opens, and under accident conditions, kickboard 8 agent that is cooled is washed open, and chilled water enters into gap between pressure vessel 2 and the metallic insulation 1 from inflow point.
In order to allow chilled water flow out from the top, upper end at metallic insulation 1 is processed with upper end open, the hinged installation cover plate 10 of each opening part, chilled water flows to upper end open from the gap, cover plate 10 is washed open, flow out from upper end open, taken away that fuel drops at the heat of pressure vessel 2 low heads under the core melt down accident, thereby guaranteed the safe and complete of low head.
The present invention has designed new chilled water runner, and the heat-insulation layer carrying increases, and therefore existing heat-insulation layer suspension type is installed and can't be satisfied the installation strength requirement.For this reason, the present invention has designed brace summer 4 and support column 11, during installation, first brace summer 4 is fixedly mounted on the concrete walls 5, metallic support post 11 is fixed on the coagulation heatable adobe sleeping platform bottom at pressure vessel 2 places, brace summer 4 sees through slit and 3 welding of the liner plate in the metallic insulation 1 of metallic insulation 1, with metallic insulation 1 bottom and 11 fixed installations of metallic support post.
Above-mentioned import kickboard 8 also can be ball float.
The course of work: when core melt down accident occurs, reactor fuel can drop in the pressure vessel bottom, this moment, lower kickboard 8 water that is cooled was washed open, chilled water enters into gap between pressure vessel 2 and the metallic insulation 1 from inflow point, the whole pressure vessel outside of flowing through, then cooling medium is washed cover plate 10 open from the upper end open of metallic insulation 1, flow out from upper end open, fuel is fallen into the heat of pressure vessel low head when having taken away core melt down accident, thereby has guaranteed the safe and complete of low head.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from spirit and scope of the present utility model.If these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (4)
1. but the metal heat preservation device of a realization response core pressure vessel external refrigeration, it comprises the metallic insulation (1) that is spaced apart and arranged in pressure vessel (2) outside, it is characterized in that: described metallic insulation (1) bottom is provided with coolant entrance, and metallic insulation (1) upper end sidewall is provided with coolant outlet; Described coolant entrance and exit are respectively by hinged import assembly (6) and the cover plate (10) of being provided with.
2. but the metal heat preservation device of realization response core pressure vessel external refrigeration as claimed in claim 1, it is characterized in that: be provided with liner plate (3) in the described metallic insulation (1), this liner plate (3) closely is fixedly installed on metallic insulation (1) inwall, and the position of the corresponding coolant entrance in this liner plate (3) bottom is provided with opening simultaneously.
3. but the metal heat preservation device of realization response core pressure vessel external refrigeration as claimed in claim 1, it is characterized in that: described import assembly (6) comprises the fishplate bar (9) that is fixedly installed on metallic insulation (1) bottom coohng agent porch, form cavity, this cavity bottom is provided with opening, the hinged installation kickboard of opening part (8).
4. but such as the metal heat preservation device of claim 1 or 2 or 3 described realization response core pressure vessel external refrigeration, it is characterized in that: be fixed with brace summer (4) on the lateral wall of described metallic insulation (1), exterior bottom is fixed with metallic support post (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202675135U CN202650559U (en) | 2012-06-08 | 2012-06-08 | Metal insulation device capable of achieving external cooling of reactor pressure vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202675135U CN202650559U (en) | 2012-06-08 | 2012-06-08 | Metal insulation device capable of achieving external cooling of reactor pressure vessel |
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| Publication Number | Publication Date |
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| CN202650559U true CN202650559U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012202675135U Expired - Lifetime CN202650559U (en) | 2012-06-08 | 2012-06-08 | Metal insulation device capable of achieving external cooling of reactor pressure vessel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103474103A (en) * | 2012-06-08 | 2013-12-25 | 中国核动力研究设计院 | Metal insulation device capable of achieving external cooling of reactor pressure vessel |
| CN109243626A (en) * | 2018-08-17 | 2019-01-18 | 中国核工业二三建设有限公司 | ACP1000 nuclear pressure container cylinder insulating layer installation method |
| CN111128412A (en) * | 2019-12-31 | 2020-05-08 | 中国核动力研究设计院 | Heat pipe reactor core structure for multiple power generation modes |
| CN114496317A (en) * | 2022-02-18 | 2022-05-13 | 中国核动力研究设计院 | Multifunctional integrated reactor pressure vessel heat preservation device |
-
2012
- 2012-06-08 CN CN2012202675135U patent/CN202650559U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103474103A (en) * | 2012-06-08 | 2013-12-25 | 中国核动力研究设计院 | Metal insulation device capable of achieving external cooling of reactor pressure vessel |
| 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 |
| 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 |
| CN109243626A (en) * | 2018-08-17 | 2019-01-18 | 中国核工业二三建设有限公司 | ACP1000 nuclear pressure container cylinder insulating layer installation method |
| CN109243626B (en) * | 2018-08-17 | 2020-10-23 | 中国核工业二三建设有限公司 | ACP1000 nuclear power pressure vessel cylinder heat-insulating layer installation method |
| CN111128412A (en) * | 2019-12-31 | 2020-05-08 | 中国核动力研究设计院 | Heat pipe reactor core structure for multiple power generation modes |
| CN111128412B (en) * | 2019-12-31 | 2023-01-03 | 中国核动力研究设计院 | Heat pipe reactor core structure for multiple power generation modes |
| CN114496317A (en) * | 2022-02-18 | 2022-05-13 | 中国核动力研究设计院 | Multifunctional integrated reactor pressure vessel heat preservation device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |