CN216928047U - Safety shell - Google Patents
Safety shell Download PDFInfo
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- CN216928047U CN216928047U CN202220489519.0U CN202220489519U CN216928047U CN 216928047 U CN216928047 U CN 216928047U CN 202220489519 U CN202220489519 U CN 202220489519U CN 216928047 U CN216928047 U CN 216928047U
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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
An embodiment of the present application provides a containment vessel, including: the containment comprises a containment body, a first pipeline and a refueling pool factory building arranged around the containment body; an inlet is formed in the containment body; a partition plate is arranged in the material changing pool plant, the material changing pool plant is divided into a material changing pool and an equipment room by the partition plate, and the material changing pool is positioned above the equipment room; the partition plate is provided with a water outlet which is communicated with the inlet through the first pipeline; the refueling water tank is used for placing boric acid solution. Therefore, the arrangement of the containment is optimized by arranging the refueling pool factory building on the outer wall of the containment body.
Description
Technical Field
The application relates to the technical field of safety of nuclear power plants, in particular to a containment vessel.
Background
The refueling water tank is a water tank which is used for providing a large amount of water source during refueling and is filled with boric acid solution when the pressurized water reactor is recharged.
Generally, a containment is built in a refueling water pool, and the containment also occupies most space due to the fact that main equipment such as a steam generator, a reactor coolant pump and a voltage stabilizer are arranged in the containment, so that the refueling water pool is difficult to arrange in the upper space in the containment and can only be arranged at the bottom in the containment.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application provides a containment, which can solve the problem that a refueling pool is difficult to arrange in the containment.
In order to solve the technical problem, the present application is implemented as follows:
an embodiment of the present application provides a containment vessel, including: the containment comprises a containment body, a first pipeline and a refueling pool factory building arranged around the containment body;
the containment body is provided with an inlet;
a partition plate is arranged in the material changing pool plant, the material changing pool plant is divided into a material changing pool and an equipment room by the partition plate, and the material changing pool is positioned above the equipment room;
the partition plate is provided with a water outlet which is communicated with the inlet through the first pipeline;
the refueling water tank is used for placing boric acid solution.
Optionally, the containment further includes a first isolation member, where the first isolation member includes a second pipeline and a first isolation valve and a second isolation valve that are oppositely disposed on the second pipeline;
the second pipeline is arranged on the containment body in a penetrating mode through a penetrating piece, the first isolation valve is located inside the containment body, and the second isolation valve is located in the atmospheric space on the upper portion inside the refueling water pool.
Optionally, the containment vessel further comprises a filter element, and the filter element is arranged at the water outlet;
the first pipeline comprises a first sub-pipeline and a second sub-pipeline which are communicated, the filter element is communicated with the first end of the first sub-pipeline, the second end of the first sub-pipeline is communicated with the first end of the second sub-pipeline, and the second end of the second sub-pipeline is communicated with the inlet;
the filter piece is used for filtering impurities and foreign matters in the boric acid solution.
Optionally, the containment further includes a third isolation valve and a fourth isolation valve oppositely disposed on the second sub-pipeline;
the second sub-pipeline penetrates through the containment body through a penetrating piece, the third isolation valve is located in the equipment room, and the fourth isolation valve is located inside the containment body.
Optionally, the containment further includes a third isolation valve and a fourth isolation valve oppositely disposed on the second sub-pipeline;
the second sub-pipeline is arranged on the material changing pool plant in a penetrating mode, the third isolation valve is located in the equipment room, and the fourth isolation valve is located outside the material changing pool plant.
Optionally, the containment vessel further comprises a lift pump disposed on the second subduct, the lift pump being located between the fourth isolation valve and the inlet.
Optionally, the first sub-pipe is a double-layer sleeve.
Optionally, the material changing pond factory building is made of steel materials or reinforced concrete materials.
Optionally, the partition plate is made of reinforced concrete material.
Optionally, the containment further includes a temperature sensor, a concentration sensor and a water level sensor disposed in the refueling water tank.
According to the technical scheme, the containment includes containment body, first pipeline and encircles the refueling pond factory building that the containment body set up, is provided with the entry on the containment body, is provided with the division board in the refueling pond factory building, and the division board separates the refueling pond factory building into refueling pond and equipment room, and the refueling pond is located top between the equipment room is provided with the delivery port on the division board, and the delivery port is linked together through first pipeline and entry, and wherein, the refueling pond is used for placing boric acid solution. Therefore, the arrangement of the containment is optimized by arranging the refueling pool factory building on the outer wall of the containment body.
Drawings
Fig. 1 is a schematic structural diagram of a containment vessel according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. As used in this application, the terms "first," "second," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a containment vessel according to an embodiment of the present disclosure, where the containment vessel includes: the containment comprises a containment body 10, a first pipeline and a refueling water pool workshop 20 arranged around the containment body 10;
an inlet is arranged on the containment body 10;
a partition plate 21 is arranged in the material changing pond plant 20, the material changing pond plant 20 is divided into a material changing pond and an equipment room by the partition plate 21, and the material changing pond is positioned above the equipment room;
a water outlet is formed in the partition plate 21 and communicated with the inlet through the first pipeline;
the refueling water tank is used for placing boric acid solution.
Wherein, the refueling water pool factory building 20 is arranged next to the containment body 10, the containment body 10 and the refueling water pool factory building 20 are positioned on the same raft foundation platform, and the bottom of the containment body 10 and the bottom of the refueling water pool factory building 20 are positioned at the same elevation.
In addition, in the concrete implementation, the boric acid solution is not completely filled in the reloading pool, namely, a proper air space is left above the liquid level of the reloading pool.
In an optional embodiment, a separation plate can be additionally arranged in the refueling water tank, a hollow structure is arranged on the separation plate, the separation plate divides the refueling water tank into an upper space and a lower space which are communicated with each other, and the highest water level of the boric acid solution is lower than the bottom plane of the separation plate. Through setting up this division board, can provide for relevant equipment and arrange the position to and provide operation platform and access way for the personnel that get into the inside of reloading pond factory building.
After the boric acid solution in the refueling water tank passes through the first pipeline and enters the containment body from the inlet, water in the boric acid solution is used as a cooling medium, so that the heat of the reactor core can be led out, and under the condition that the reactor core is burnt out, the heat on the surface of a pressure vessel for placing the reactor core can be led out, or the heat of the reactor core and the pressure vessel can be led out simultaneously. In addition, the boron concentration in the boric acid solution meets the requirement of reactor core reactivity control, maintains the subcritical depth of the reactor core and avoids the re-criticality of the reactor core.
In the technical scheme that this application embodiment provided, the containment includes containment body 10, first pipeline and encircles the refueling pond factory building 20 that containment body 10 set up, is provided with the entry on the containment body 10, is provided with division board 21 in the refueling pond factory building 20, and division board 21 separates the refueling pond factory building 20 into refueling pond and equipment room, and the refueling pond is located top between the equipment room is provided with the delivery port on the division board 21, and the delivery port is linked together through first pipeline and entry, and wherein, the refueling pond is used for placing boric acid solution. In this way, the arrangement of the containment is optimized by arranging the refueling water pool factory building 20 on the outer wall of the containment body 10.
During specific implementation, the refueling pool is arranged at a high position relative to the containment body, namely the elevation of the bottom of the refueling pool is higher than the elevation of the top of the reactor core inside the containment body and the elevation of the main pipeline of the primary circuit.
Optionally, the containment vessel further comprises a partition 30, wherein the partition 30 comprises a second pipeline 31 and a first isolation valve 32 and a second isolation valve 33 which are oppositely arranged on the second pipeline 31;
the second pipeline 31 is arranged on the containment vessel body 10 through a penetrating piece in a penetrating mode, the first isolation valve 32 is located inside the containment vessel body 10, and the second isolation valve 33 is located in the air space at the upper portion in the refueling water pool.
In specific implementation, the isolating piece 30 is arranged at the upper part of the refueling water pool, when the first isolating valve 32 and the second isolating valve 33 are both in an open state, the atmospheric space in the refueling water pool is communicated with the atmospheric space in the containment body 10, so that the atmospheric pressure value in the refueling water pool and the atmospheric pressure value in the containment body 10 are the same, and therefore, the boric acid solution in the refueling water pool flows out from the water outlet and flows into the containment body 10 through the first pipeline.
In addition, the first isolation valve 32 and the second isolation valve 33 are respectively arranged on both sides of the containment body 10, so that the two isolation valves realize the isolation of the air space on both sides of the containment body 10.
Of course, the isolation member may also include only one isolation valve disposed on any side of the containment body, which is not limited in this embodiment.
Optionally, the containment vessel further comprises a filter 40, the filter 40 being disposed at the water outlet;
the first duct includes a first sub-duct 50 and a second sub-duct 60 which are communicated with each other, the filter member 40 is communicated with a first end of the first sub-duct 50, a second end of the first sub-duct 50 is communicated with a first end of the second sub-duct 60, and a second end of the second sub-duct 60 is communicated with the inlet;
the filter member 40 is used to filter impurities or foreign substances in the boric acid solution.
Wherein, filter 40 can be the filter screen to the boric acid solution to flowing out from the delivery port filters the back, reentrant first subduct 50, reduces because impurity or foreign matter block first subduct 50, leads to the problem that the water injection efficiency is low.
Optionally, the containment vessel further comprises a third isolation valve 70 and a fourth isolation valve 80 oppositely disposed on the second sub-conduit 60;
the second subduct 60 penetrates through the containment body 10 through a penetration, the third isolation valve 70 is located in the equipment room, and the fourth isolation valve 80 is located inside the containment body 10.
In practical application, the second subduct 60 is penetratingly provided on the containment body 10 through a penetration piece, when the third isolation valve 70 and the fourth isolation valve 80 are both in an open state, and at the same time, the first isolation valve 32 and the second isolation valve are also in an open state, the atmospheric space in the refueling water tank is communicated with the atmospheric space in the containment body 10, so that the atmospheric pressure value in the refueling water tank and the atmospheric pressure value in the containment body 10 are the same, because of the pressure head provided by the self gravity of the water body, at the moment, after the boric acid solution in the material changing pool is filtered by the filter element 40 from the water outlet, enters the interior of the containment body 10 from the inlet through the first subduct 50 and the second subduct 60 in sequence, to achieve flooding of the reactor core within the containment body, and/or flooding of the pressure vessel, and/or the main conduit is flooded to avoid core damage or pressure vessel meltthrough by core melt.
In this embodiment, the third isolation valve 70 and the fourth isolation valve 80 are respectively arranged on two sides of the refueling water pool plant 20, and the two isolation valves realize isolation of two sides of the containment body.
Of course, an isolation valve may be disposed on any side of the second sub-pipeline 60, and the isolation valve may be located in the equipment room or inside the containment body, which is not limited in this embodiment. In implementation, when only one isolation valve is disposed on the second subduct 60 and the isolation valve is located inside the containment body 10, the first subduct 50 is disposed on the containment body 10 through the penetration.
Optionally, the containment vessel further comprises a third isolation valve 70 and a fourth isolation valve 80 oppositely disposed on the second sub-conduit 60;
the second sub-pipe 60 runs through the penetration piece the pond factory building of reloading 20, just third isolation valve 70 is located in the equipment room, fourth isolation valve 80 is located outside the pond factory building of reloading 20.
Of course, an isolation valve may be disposed on any side of the second sub-pipe, and the isolation valve may be located in the equipment room or outside the material changing pond building, which is not limited in this embodiment.
In the implementation, when only one isolation valve is disposed on the second sub-pipe 60 and the isolation valve is located outside the refueling water pool plant 20, the first sub-pipe 50 is disposed on the refueling water pool plant through the penetrating member.
Optionally, the containment vessel further comprises a lift pump 90 disposed on the second sub-conduit 60, the lift pump 90 being located between the fourth isolation valve 80 and the inlet.
In this embodiment, by providing the lift pump 90, the boric acid solution in the refueling water tank can be quickly injected into the reactor coolant system or the reactor pit or containment spraying can be performed by using the pressure head of the pump.
In specific implementation, the second sub-pipeline 60 is arranged on the side wall of the refueling water pool plant 20 in a penetrating manner, when the third isolation valve 70 and the fourth isolation valve 80 are both in an open state, and at the time, the first isolation valve 32 and the second isolation valve 33 are also in an open state, the atmospheric space in the refueling water pool is communicated with the atmospheric space in the containment body 10, so that the atmospheric pressure value in the refueling water pool and the atmospheric pressure value in the containment body 10 are the same, at the time, the boric acid solution in the refueling water pool enters the interior of the containment body 10 from the inlet through the first sub-pipeline 50 and the second sub-pipeline 60 in sequence after being filtered by the filter 40 from the water outlet, and enters the interior of the containment body 10 through the pressure head of the lift pump 90, so as to submerge a primary circuit water replenishing water and (or) reactor core, a reactor cavity water injection pressure vessel and a main pipeline, and (or) a spray containment vessel.
Optionally, the first subduct 50 is a double-walled sleeve.
In this embodiment, the first subduct 50 is provided as a double-walled sleeve to prevent uncontrolled leakage. In addition, monitoring points can be arranged on the pipeline to monitor the integrity of the pipeline.
Optionally, the refueling water pool plant 20 is made of steel materials or reinforced concrete materials, so that the refueling water pool plant 20 can bear the highest design pressure and the highest design temperature of the containment body under the accident condition, and the safety of the nuclear power plant is improved.
In specific implementation, the material changing pond 20 made of steel material has the advantage of light weight because the material changing pond 20 is large in size. And, the steel construction reloading pond factory building 20 should adopt integrative manufacture craft to make, improves the wholeness of reloading pond factory building 20 to avoid the risk that the factory building leaked.
In addition, still can set up steel structural support to improve the intensity of steel construction reloading pond factory building 20, the support can be prefabricated at the mill segmentation, and at the installation of on-the-spot concatenation, can shorten construction period.
In addition, the problem of influence of deformation of a containment vessel generated by prestress and a pressing test on the refueling water pool plant 20 can be solved by adopting the steel-structure external refueling water pool plant 20.
Similarly, the refueling water pool 20 can also be made of reinforced concrete material, and the inner wall of the refueling water pool is provided with a steel lining.
Optionally, the partition plate 21 is made of a reinforced concrete material.
In specific implementation, the boric acid solution in the material changing water tank is high in content, and the reinforced concrete material is arranged for manufacturing, so that high supporting force can be provided.
Optionally, the containment further includes a temperature sensor, a concentration sensor, and a water level sensor disposed in the refueling water tank.
In this embodiment, through set up temperature sensor, concentration sensor and level sensor in the pond of reloading, carry out real time monitoring to the temperature of boric acid solution, the boron concentration of boric acid solution and the water charge volume of boric acid solution respectively to adjust the boric acid solution in the factory building 20 of reloading pond in real time, thereby improve its reliability and usability.
While the present embodiments have been described with reference to the accompanying drawings, the present embodiments are not limited to the above-described embodiments, which are merely illustrative and not restrictive, and it will be apparent to those of ordinary skill in the art that many more modifications and variations can be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A containment vessel, comprising: the containment comprises a containment body, a first pipeline and a refueling pool factory building arranged around the containment body;
an inlet is formed in the containment body;
a partition plate is arranged in the material changing pool plant, the material changing pool plant is divided into a material changing pool and an equipment room by the partition plate, and the material changing pool is positioned above the equipment room;
the partition plate is provided with a water outlet which is communicated with the inlet through the first pipeline;
the refueling water tank is used for placing boric acid solution.
2. The containment vessel of claim 1 further comprising a first isolator comprising a second conduit and first and second isolation valves disposed opposite the second conduit;
the second pipeline is arranged on the containment body in a penetrating mode through a penetrating piece, the first isolation valve is located inside the containment body, and the second isolation valve is located in the atmospheric space on the upper portion inside the refueling water pool.
3. The containment vessel of claim 1 further comprising a filter disposed at the water outlet;
the first pipeline comprises a first sub-pipeline and a second sub-pipeline which are communicated, the filter element is communicated with the first end of the first sub-pipeline, the second end of the first sub-pipeline is communicated with the first end of the second sub-pipeline, and the second end of the second sub-pipeline is communicated with the inlet;
the filter piece is used for filtering impurities and foreign matters in the boric acid solution.
4. The containment vessel of claim 3 further comprising a third isolation valve and a fourth isolation valve oppositely disposed on the second subduct;
the second sub-pipeline penetrates through the containment body through a penetrating piece, the third isolation valve is located in the equipment room, and the fourth isolation valve is located inside the containment body.
5. The containment vessel of claim 3 further comprising a third isolation valve and a fourth isolation valve oppositely disposed on the second subduct;
the second sub-pipeline is arranged on the material changing pool plant in a penetrating mode, the third isolation valve is located in the equipment room, and the fourth isolation valve is located outside the material changing pool plant.
6. The containment vessel of claim 5 further comprising a lift pump disposed on the second subduct, the lift pump being located between the fourth isolation valve and the inlet.
7. The containment vessel of claim 3 wherein the first subduct is a double-walled sleeve.
8. The containment vessel of claim 1 wherein the refueling pool factory building is made of steel or reinforced concrete material.
9. The containment vessel of claim 1 wherein the divider plate is fabricated from a reinforced concrete material.
10. The containment vessel of claim 1 further comprising a temperature sensor, a concentration sensor, and a water level sensor disposed within the refueling water pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220489519.0U CN216928047U (en) | 2022-03-08 | 2022-03-08 | Safety shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220489519.0U CN216928047U (en) | 2022-03-08 | 2022-03-08 | Safety shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216928047U true CN216928047U (en) | 2022-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220489519.0U Active CN216928047U (en) | 2022-03-08 | 2022-03-08 | Safety shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216928047U (en) |
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2022
- 2022-03-08 CN CN202220489519.0U patent/CN216928047U/en active Active
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