CN207883326U - A kind of reactor pit and reactor pit system - Google Patents
A kind of reactor pit and reactor pit system Download PDFInfo
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- CN207883326U CN207883326U CN201721769755.3U CN201721769755U CN207883326U CN 207883326 U CN207883326 U CN 207883326U CN 201721769755 U CN201721769755 U CN 201721769755U CN 207883326 U CN207883326 U CN 207883326U
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- reactor
- reactor pit
- mirror board
- pit
- pressure vessel
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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
A kind of reactor pit of the utility model offer and reactor pit system, there is disclosed the heat preservation technologies that reactor pressure vessel and steam generator pit-hole utilize metallic reflection radiation energy reduction heat loss, wherein, the reactor pit includes reactor pit bottom and heap crater wall, the first mirror board is installed at the reactor pit bottom and the surface of the heap crater wall orientating reaction core pressure vessel or steam generator, the reflecting surface of first mirror board is towards the inside of the reactor pit.The utility model advantage is：Safety, reliability and the economy of reactor can be improved.
Description
Technical field
The utility model is related to nuclear reactor art fields, more particularly to a kind of and reactor pit and reactor pit system
System.
Background technology
Current most reactors, because spatial position is big, reactor pressure vessel and steam generator are often placed on independence
In a dedicated reactor pit being arranged, in order to reduce the heat loss of the reactor pressure vessel or steam generator,
It is 80-130mm that a layer thickness is equipped on reactor pressure vessel or steam generator（Millimeter）Metallic insulation.But
For the small-sized reactor project of compact（For example, the ACPR50S as ocean experimental reactor platform）Due to limited space problem, 80-
For the metallic insulation of 130mm since thickness is larger, occupied space is more, while being also unfavorable for neutron irradiation shielding, and then can increase
The use of a large amount of shielding materials, economy be not strong.In addition, when inservice inspection is to equipment weld seam detection, need to protect the metal
Warm layer is dismounted, and needs to expend larger manpower and time in dismounting, and irradiation risk can be caused to dismounting worker.
Therefore, when using such compact small-sized heap, the cancellation of metallic insulation is last resort, but insulating layer
Cancellation excessive heat exchange can be caused to bear to reactor system, and then influence reactor normal work and cause the accident frequency
Rate increases.
Utility model content
Technical problem to be solved by the utility model is to provide a kind of reactor pit and reactor pit system,
There is disclosed reactor pressure vessel and steam generator pit-holes to reduce the heat preservation technology of heat loss using metallic reflection radiation energy,
Safety, reliability and the economy of reactor can be improved.
In order to solve the above-mentioned technical problem, the utility model embodiment also provides a kind of reactor pit, including reactor pit bottom
With heap crater wall, the first mirror board, the reflection of first mirror board are installed on the surface at the reactor pit bottom and the heap crater wall
Facing towards the inside of the reactor pit.
Wherein, between the thickness of first mirror board is 1 millimeter to 10 millimeters.
Wherein, first mirror board is stainless steel mirror board.
Wherein, the reactor pit is internally provided with reactor pressure vessel, in the reactor pit and the reaction stacking pressure
The second mirror board is also set up between force container, second mirror board is set on two surfaces of deflector, or is directly used
Certain thickness mirror board.
Wherein, the thickness of second mirror board is 10 millimeters.
Correspondingly, the utility model embodiment also provides a kind of reactor pit system, including reactor pit and is located at
Reactor pressure vessel in the reactor pit or steam generator, the reactor pit include reactor pit bottom and reactor pit
Wall is equipped with the first mirror board, the reflecting surface direction of first mirror board on the surface at the reactor pit bottom and the heap crater wall
The inside of the reactor pit.
Wherein, between the thickness of first mirror board is 1 millimeter to 10 millimeters.
Wherein, first mirror board is stainless steel mirror board.
Wherein, inside the reactor pit when setting reactor pressure vessel, in the reactor pit and the reaction stacking pressure
The second mirror board is also set up between force container, second mirror board is set on two surfaces of deflector or directly using one
Determine the mirror board of thickness.
Wherein, the thickness of second mirror board is 10 millimeters.
The advantageous effect of the utility model embodiment is：
The embodiments of the present invention pass through at the reactor pit bottom of reactor pit and the heap crater wall orientating reaction heap pressure
The surface of container or steam generator is equipped with mirror board, on the one hand, can reflex response core pressure vessel or steam generator
Heat radiation reduces equipment heat loss；On the other hand, since the thickness of mirror board is small, reactor pressure vessel or steam can be reduced
Generator and reactor pit distance, reduce neutron escape space, convenient for neutron radiation shield, reducing first and second shielding pressure, saving
A large amount of shielding materials；In another aspect, when inservice inspection, the time of dismounting insulating layer is saved, the irradiation of staff is effectively reduced
Risk；In another aspect, alleviating the small-sized defect to bringing excessive heat exchange burden to system due to cancelling insulating layer of compact；
In addition, from economic level, mirror board unit area building cost is far below metallic insulation unit area building cost, has both saved material
Material also saves construction cost.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, other drawings may also be obtained based on these drawings.
The structural schematic diagram of the first embodiment of Fig. 1 reactor pit systems.
Fig. 2 is the structural schematic diagram of the second embodiment of reactor pit system.
Specific implementation mode
About mirror reflective plate selection and thickness referring to front explanation, herein without repeating.
The structural schematic diagram of the first embodiment of Fig. 1 reactor pit systems.As shown in Figure 1, reactor pit system packet
Reactor pit 10 and the reactor pressure vessel 20 in the reactor pit 10 are included, in the embodiments of the present invention
In, the insulation construction of reactor pressure vessel 20 may include, the reactor pressure vessel is surrounded on reactor pit 10
The Knockdown metal insulating layer 30 of 20 shells, and positioned at the reactor pit bottom of the reactor pit 10 and heap crater wall described in
The first mirror board 400 on the surface of reactor pressure vessel 20.On this basis, the embodiments of the present invention cancel reaction
Metallic insulation of the core pressure vessel in reactor pit part.In some embodiments, the thickness of the first mirror board 400 can be
1-10mm.In some embodiments, first mirror board 400 can be stainless steel mirror board, for example, 304 stainless steel mirror boards
Or the stainless steel of other same levels trades mark.When the effect that can reach insulating layer using the first mirror board 400, meanwhile, this practicality
New embodiment can have the following advantages that：On the one hand, pass through the hot spoke of the reflection characteristic reflex response core pressure vessel of mirror board
It penetrates, reduces equipment heat loss；On the other hand, since the thickness of mirror board is smaller, can reduce reactor pressure vessel and reactor pit away from
From reduction neutron escape space, convenient for neutron radiation shield, reducing first and second shielding pressure, saving a large amount of shielding materials；
In another aspect, when inservice inspection, the time of dismounting insulating layer is saved, the irradiation risk of staff is effectively reduced；In another aspect,
Alleviate the small-sized defect to bringing excessive heat exchange burden to system due to cancelling insulating layer of compact；In addition, from economic ladder
It is said on face, mirror board unit area building cost is far below metallic insulation unit area building cost, had both saved material and also saves and has built
Cause this.
Further, as shown in Figure 1, in some embodiments, holding in the reactor pit 10 and the reactor pressure
The second mirror board 50 is also set up between device 20, specifically, which can be set on two surfaces of deflector
Or directly use certain thickness mirror board.In nominal situation the second mirror board 50 can reflected radiation heat, in addition, the second minute surface
Plate 50 is that realization provides reactor core melt retention (In-VesselRetention, IVR) to interior outflow by cooling outside container
Road ensures after major accident occurs, and reactor pit water filling, cooled reactor are realized before reactor core fusant falls low head on a large scale
Take away the heat that reactor core fusant is transmitted to reactor pressure vessel 20 in 20 outer surface of pressure vessel, it is ensured that reactor pressure holds
The integrality of device 20, it is final to realize that reactor core fusant is detained steadily in the long term in reactor pressure vessel 20.In some embodiments
In, the thickness of the second mirror board 50 can be 10mm.In some embodiments, as shown in Figure 1, the second mirror board 50 is in reactor
The part of the bottom in hole 10 and the bottom of reactor pressure vessel 20 includes opening 60.In addition, in the reactor pit of reactor pit 10
Further include at least one water filling port on wall, for when breaking down, cooled reactor pressure vessel 20 to be used for reactor pit water filling
Outer surface.
In the specific implementation, the reactor pit system of the utility model embodiment can be on the small-sized heap of compact, such as
ACPR50S.Certainly, the small-sized heap of compact is only citing, is not used to limit the mirror of the reactor pressure vessel of the utility model
The application range of panel insulation construction.
Fig. 2 is the structural schematic diagram of the second embodiment of reactor pit system.As shown in Fig. 2, reactor pit system
Steam generator 200 including reactor pit 100 and in the reactor pit 100, in the implementation of the utility model
In example, the insulation construction of steam generator 200 may include, be surrounded on reactor pit 100 outside the steam generator 200
The Knockdown metal insulating layer 300 of shell, and heap crater wall positioned at the reactor pit 10 and reactor pit bottom are towards the steaming
The first mirror board 400 on the surface of vapour generator 200.On this basis, the embodiments of the present invention cancel steam generation
Metallic insulation of the device in reactor pit part.In some embodiments, the thickness of the first mirror board 400 can be 1-10mm.
In some embodiments, first mirror board 400 can be stainless steel mirror board, for example, 304 stainless steel mirror boards or mutually same
The stainless steel of the grade trade mark.When using the first mirror board 400 as insulating layer, the utility model embodiment can have following excellent
Point：On the one hand, by the heat radiation of the reflection characteristic steam generator of mirror board, reduce equipment heat loss；On the other hand, in-service
When inspection, the time of dismounting insulating layer is saved, the irradiation risk of staff is effectively reduced；In another aspect, alleviating compact
The small-sized defect to bringing excessive heat exchange burden to system due to cancelling insulating layer；In addition, from economic level, mirror board
Unit area building cost is far below metallic insulation unit area building cost, had both saved material and has also saved construction cost.
In the specific implementation, the reactor pit system of the utility model embodiment can be on the small-sized heap of compact, such as
ACPR50S.Certainly, the small-sized heap of compact is only citing, is not used to limit the mirror board of the steam generator of the utility model
The application range of insulation construction.
Above disclosures are merely preferred embodiments of the utility model, with this utility model cannot be limited certainly
Interest field, therefore equivalent variations made according to the claim of the utility model still fall within the scope of the utility model.
Claims (10)
1. a kind of reactor pit, including reactor pit bottom and heap crater wall, which is characterized in that in the reactor pit bottom and the heap crater wall
Surface is equipped with the first mirror board, and the reflecting surface of first mirror board is towards the inside of the reactor pit.
2. reactor pit according to claim 1, which is characterized in that the thickness of first mirror board be 1 millimeter extremely
Between 10 millimeters.
3. reactor pit according to claim 1, which is characterized in that first mirror board is stainless steel mirror board.
4. reactor pit according to claim 3, which is characterized in that be further provided with inside the reactor pit
Reactor pressure vessel also sets up the second mirror board, second mirror between the reactor pit and the reactor pressure vessel
Panel is set on two surfaces of deflector or directly uses certain thickness mirror board.
5. reactor pit according to claim 4, which is characterized in that the thickness of second mirror board is 10 millimeters.
6. a kind of reactor pit system, including reactor pit and the reactor pressure vessel in the reactor pit
Or steam generator, which is characterized in that the reactor pit includes reactor pit bottom and heap crater wall, in the reactor pit bottom and the heap
The surface of crater wall is equipped with the first mirror board, and the reflecting surface of first mirror board is towards the inside of the reactor pit.
7. reactor pit system according to claim 6, which is characterized in that the thickness of first mirror board is 1 milli
Rice is between 10 millimeters.
8. reactor pit system according to claim 6, which is characterized in that first mirror board is stainless steel mirror
Plate.
9. reactor pit system according to claim 8, which is characterized in that be internally provided in the reactor pit
When reactor pressure vessel, the second mirror board is also set up between the reactor pit and the reactor pressure vessel, described second
Mirror board is set on two surfaces of deflector or directly uses certain thickness mirror board.
10. reactor pit system according to claim 9, which is characterized in that the thickness of second mirror board is 10
Millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721769755.3U CN207883326U (en) | 2017-12-18 | 2017-12-18 | A kind of reactor pit and reactor pit system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721769755.3U CN207883326U (en) | 2017-12-18 | 2017-12-18 | A kind of reactor pit and reactor pit system |
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| Publication Number | Publication Date |
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| CN207883326U true CN207883326U (en) | 2018-09-18 |
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| CN201721769755.3U Active CN207883326U (en) | 2017-12-18 | 2017-12-18 | A kind of reactor pit and reactor pit system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107958711A (en) * | 2017-12-18 | 2018-04-24 | 中广核研究院有限公司 | A kind of reactor pit and reactor pit system |
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2017
- 2017-12-18 CN CN201721769755.3U patent/CN207883326U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107958711A (en) * | 2017-12-18 | 2018-04-24 | 中广核研究院有限公司 | A kind of reactor pit and reactor pit system |
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