Arrangement structure for lead-bismuth subcritical fast reactor building

Abstract

The embodiment of the invention relates to the technical field of plant arrangement of nuclear power plants, in particular to an arrangement structure for a lead-bismuth subcritical fast reactor plant. The system comprises a reactor body module, a primary loop auxiliary system module, a secondary loop system module, a third loop system module, an accident residual heat removal module, an electric instrument equipment module, a fuel processing module and auxiliary supporting facilities, and a specific arrangement mode of the modules is provided. According to the arrangement structure provided by the embodiment of the invention, the compact arrangement of the lead-bismuth subcritical fast reactor building is realized, the rationality and economy of the arrangement of the lead-bismuth subcritical fast reactor building are improved, and the production and construction cost is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of plant layout of nuclear power plants, and specifically to a layout structure for a lead-bismuth subcritical fast reactor reactor plant. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] The lead-bismuth subcritical fast neutron reactor is a pool-type fast reactor that uses liquid lead-bismuth as the coolant for the first and second circuits. The reactor and the first circuit system are placed in the reactor container. The reactor heat is exported through the second circuit, and the third circuit exports the heat of the second circuit to the atmosphere through a lead-bismuth-air heat exchanger. Summary of the invention

[0004] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0005] An embodiment of the present application provides a layout structure for a lead-bismuth subcritical fast reactor reactor building, which includes: a reactor body module, a primary auxiliary system module, a secondary system module, a tertiary system module, an accident waste heat removal module, an electrical instrumentation module, a fuel processing module, and ancillary supporting facilities.

[0006] The reactor body module is arranged in the middle of the primary-loop auxiliary system module, the secondary-loop system module, the tertiary-loop system module, the accident waste heat removal module, the electrical and instrumentation equipment module, the fuel processing module, and the ancillary supporting facilities. The primary-loop auxiliary system module, the secondary-loop system module, the tertiary-loop system module, the accident waste heat removal module, the electrical and instrumentation equipment module, the fuel processing module, and the ancillary supporting facilities are arranged around the reactor body module.

[0007] Taking the reactor main module as the benchmark, it has four directions of east, west, south and north. The primary-loop auxiliary system module is arranged on the west side of the reactor main module, the secondary-loop system module is arranged on the south and north sides of the reactor main module respectively, the tertiary-loop system module is arranged on the south and north sides of the reactor main module respectively, and the tertiary-loop system module is arranged on the west side of the secondary-loop system module.

[0008] The accident waste heat removal modules are respectively arranged on the west side of the primary auxiliary system module and the tertiary system module; the electrical and instrumentation equipment modules are arranged on the south and north sides of the reactor body module, the secondary system module and the tertiary system module; the fuel processing module is arranged on the east side of the reactor body module, and the ancillary supporting facilities are arranged on the east side of the reactor body module and the fuel processing module.

[0009] According to the arrangement structure provided in the embodiments of the present application, a compact arrangement of a lead-bismuth subcritical fast reactor reactor building can be achieved, thereby improving the rationality and economy of the arrangement of a lead-bismuth subcritical fast reactor reactor building and reducing production and construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Other objects and advantages of the present application will become apparent from the following description of the embodiments of the present application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the present application.

[0011] Figure 1 It is a plan view of the layout structure of a lead-bismuth subcritical fast reactor reactor building according to an embodiment of the present application.

[0012] Description of reference numerals:

[0013] 10. Reactor body module; 20. Primary loop auxiliary system module; 30. Secondary loop system module; 40. Tertiary loop system module; 50. Accident residual heat removal module; 60. Electrical equipment module; 70. Fuel processing module; 80. Ancillary supporting facilities.

[0014] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0015] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0016] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0017] The inventors of the present application have discovered that due to the characteristics of the lead-bismuth subcritical fast neutron reactor itself and the differences in the coolant and process system settings, the plant layouts of different lead-bismuth fast reactor reactors are very different. However, the domestic focus is on the division of nuclear island plants and the layout of plant groups, and there is a lack of layout and compact design solutions for lead-bismuth fast reactor plants.

[0018] To solve the above problems, the embodiments of the present application propose a layout structure for a lead-bismuth subcritical fast reactor reactor building, such as Figure 1 As shown, Figure 1 A schematic plan view showing the layout structure of a lead-bismuth subcritical fast reactor reactor building according to an embodiment of the present application, wherein the layout structure includes:

[0019] Reactor body module 10, primary loop auxiliary system module 20, secondary loop system module 30, tertiary loop system module 40, accident residual heat removal module 50, electrical instrumentation module 60, fuel processing module 70, and auxiliary supporting facilities 80; the reactor body module 10 is arranged in the middle of the primary loop auxiliary system module 20, the secondary loop system module 30, the tertiary loop system module 40, the accident residual heat removal module 50, the electrical instrumentation module 60, the fuel processing module 70, and the auxiliary supporting facilities 80, and the primary loop auxiliary system module 20, the secondary loop system module 30, the tertiary loop system module 40, the accident residual heat removal module 50, the electrical instrumentation module 60, the fuel processing module 70, and the auxiliary supporting facilities 80 are arranged around the reactor body module 10; taking the reactor body module 10 as a reference, it has the following features: In the four directions of west, south and north, the primary-loop auxiliary system module 20 is arranged on the west side of the reactor body module 10, the secondary-loop system module 30 is respectively arranged on the south and north sides of the reactor body module 10, the tertiary-loop system module 40 is respectively arranged on the south and north sides of the reactor body module 10, and the tertiary-loop system module 40 is arranged on the west side of the secondary-loop system module 30; the accident residual heat removal module 50 is respectively arranged on the west side of the primary-loop auxiliary system module 20 and the tertiary-loop system module 40; the electrical instrumentation module 60 is arranged on the south and north sides of the reactor body module 10, the secondary-loop system module 30 and the tertiary-loop system module 40; the fuel processing module 70 is arranged on the east side of the reactor body module 10, and the ancillary supporting facilities 80 are arranged on the east side of the reactor body module 10 and the fuel processing module.

[0020] According to the arrangement structure provided in the embodiments of the present application, a compact arrangement of a lead-bismuth subcritical fast reactor reactor building can be achieved, thereby improving the rationality and economy of the arrangement of a lead-bismuth subcritical fast reactor reactor building and reducing production and construction costs.

[0021] In some embodiments, the arrangement structure is divided into an above-ground area and an underground area, the underground area includes the first to third floors, and the above-ground area includes the fourth to sixth floors. The reactor body module 10 and the primary auxiliary system module 20 are arranged as a whole on the first and second floors of the underground area; the accident residual heat removal module 50 is arranged on the fourth and fifth floors of the above-ground area; the secondary system module 30, the tertiary system module 40, the electrical instrumentation module 60, the fuel processing module 70 and the auxiliary supporting facilities 80 are arranged to span the above-ground area and the underground area, wherein the secondary system module 30 is arranged on the second to fifth floors, the tertiary system module 40 is arranged on the third to fifth floors, the electrical instrumentation module 60 is arranged on the third to sixth floors, the fuel processing module 70 is arranged on the second to fourth floors, and the auxiliary supporting facilities 80 are arranged on the first to sixth floors.

[0022] This embodiment arranges the arrangement structure into a layered structure so that the lead-bismuth subcritical fast reactor reactor building is extended longitudinally, thereby further realizing a compact arrangement of the lead-bismuth subcritical fast reactor reactor building and reducing the lateral space requirement. At the same time, by arranging the reactor body module 10 and the primary auxiliary system module 20 as a whole in the underground area, and partially arranging the secondary system module 30, the tertiary system module 40, the electrical instrumentation module 60, the fuel processing module 70 and the ancillary supporting facilities 80 in the underground area, the safety and stability of the reactor building are ensured.

[0023] For example, the elevation of the first floor of the underground area is set to -23.50m, the elevation of the second floor is set to -17.00m, the elevation of the third floor is set to -8.50m, the elevation of the fourth floor of the above-ground area is set to ±0.00m, the elevation of the fifth floor is set to 6.00m, and the elevation of the sixth floor is set to 12.00m.

[0024] In some embodiments, the reactor body module 10 is arranged at the center position of the first layer and the second layer, and includes a reactor pit, a reactor main vessel and a reactor core system; the reactor pit is arranged on the first layer, the reactor main vessel is supported in the reactor pit and extends to the second layer, and the reactor core system is arranged inside the reactor main vessel.

[0025] For example, the reactor main vessel may be supported in the reactor pit by means of a suspension support, with its upper surface extending to -17.00 m.

[0026] In some embodiments, the primary-loop auxiliary system module 20 includes a primary-loop overpressure protection system, an emergency gas handling system, a covering gas analysis and detection system, a primary-loop Po removal system, a fuel damage detection system, an argon purge and decay system, a primary-loop lead-bismuth oxygen control system, a primary-loop lead-bismuth analysis and detection system, a primary-loop lead-bismuth purification system, a primary-loop lead-bismuth pump cooling system, and a primary-loop lead-bismuth storage and charging and discharge system.

[0027] The primary overpressure protection system, emergency gas treatment system, cover gas analysis and detection system, primary Po removal system, fuel damage detection system, argon purge and decay system are arranged on the first floor and are arranged around the reactor pit; the primary lead-bismuth oxygen control system, the primary lead-bismuth analysis and detection system, and the primary lead-bismuth purification system are arranged on the second floor and are arranged on the upper floor of the reactor pit; the primary lead-bismuth pump cooling system is arranged on the second floor and is respectively arranged on the south and north sides of the upper floor of the reactor pit; the primary lead-bismuth storage and charging and discharge system is arranged on the second floor, which is arranged on the east side of the primary lead-bismuth pump cooling system and is adjacent to the reactor main container and the secondary system module 30.

[0028] Through the above-mentioned arrangement in this embodiment, it is convenient to improve the coordination between the functions of each system of the primary auxiliary system module 20 and the requirements of the reactor main module 10, while further compacting the layout, shortening the pipeline layout, and improving the rationality and economy of the layout of the lead-bismuth subcritical fast reactor reactor building.

[0029] In some embodiments, the primary lead-bismuth storage and charging and discharging system includes a lead-bismuth storage tank process room, a lead-bismuth configuration process room, and a lead-bismuth analysis process room; the lead-bismuth analysis process room is arranged on the east side of the lead-bismuth storage tank process room, the lead-bismuth storage tank process room and the lead-bismuth configuration process room are arranged on the east side of the primary lead-bismuth pump cooling system, and the lead-bismuth storage tank process room is arranged adjacent to the reactor main container and the part of the secondary system module 30 located on the second floor. For example, the lead-bismuth storage tank process room is arranged at an altitude of -17.00m.

[0030] In this embodiment, the lead-bismuth storage tank process room that needs to be connected to the reactor main container and the secondary system module 30 in the primary lead-bismuth storage and filling and exhaust system is set close to its needs, so as to further compact and rationalize the layout and improve the coordination of the cooperation.

[0031] In some embodiments, the secondary circuit system module 30 includes a secondary circuit main cooling system, a secondary circuit lead-bismuth analysis and detection system, a secondary circuit lead-bismuth purification system, a secondary circuit lead-bismuth oxygen control system, a secondary circuit lead-bismuth storage and charging and discharging system, and a secondary circuit lead-bismuth pump cooling system.

[0032] The secondary circuit main cooling system is arranged on the third floor and is respectively arranged on the south and north sides of the reactor main container. The secondary circuit main cooling system is arranged to be fluidically connected with the secondary circuit lead-bismuth purification system, the secondary circuit lead-bismuth oxygen control system and the secondary circuit lead-bismuth analysis and detection system; the secondary circuit lead-bismuth purification system, the secondary circuit lead-bismuth oxygen control system, the secondary circuit lead-bismuth analysis and detection system, the secondary circuit lead-bismuth storage and charging and discharge system and the secondary circuit lead-bismuth pump cooling system are respectively arranged on the second floor, the fourth floor and the fifth floor.

[0033] Through the above arrangement, this embodiment facilitates the coordination between the secondary loop system module 30 and the reactor main vessel and the primary loop auxiliary system module 20, so as to remove the heat of the reactor vessel through the primary loop.

[0034] In some embodiments, the secondary circuit main cooling system includes an air cooler, a buffer tank, and an intermediate heat exchanger.

[0035] In some embodiments, the three-circuit system module 40 is provided with an air heat exchange system, which is arranged on the third floor and on the west side of the two-circuit main cooling system.

[0036] Exemplarily, the air heat exchange system is arranged at a height of -8.50 m.

[0037] In some embodiments, the air heat exchange system is disposed close to the buffer tank of the secondary circuit main cooling system.

[0038] In some embodiments, the accident residual heat removal module 50 includes an emergency residual heat removal system process room and an emergency residual heat removal system pipeline. The emergency residual heat removal system process room is set on the fourth floor, extends to the outside of the plant through the fifth floor, and is set on the west side of the air heat exchange system. The emergency residual heat removal system pipeline is set on the fourth and fifth floors, and is configured to be connected to the secondary circuit main cooling system and the air heat exchange system set on the third floor from above. So that in the event of an accident, when the normal heat removal function of the reactor fails, the reactor residual heat can be discharged to the outside of the plant in time.

[0039] In some embodiments, the electrical and instrumentation equipment module 60 includes a diesel generator set, a power supply system distribution room, and an instrumentation equipment room; the diesel generator set and the power supply system distribution room are arranged on the third and fourth floors, and are arranged on the south and north sides of the reactor body module 10, the secondary circuit system module 30, and the tertiary circuit system module 40; the instrumentation equipment room is arranged on the fifth floor, and is arranged on the south and north sides of the reactor body module, the secondary circuit system module 30, and the tertiary circuit system module 40.

[0040] In some embodiments, the fuel processing module 70 includes a new fuel storage room and a spent fuel storage room. The new fuel storage room is arranged on the second to fourth floors and on the east side of the reactor main container. The spent fuel storage room is arranged on the third floor and on the north side of the new fuel storage room, so as to shorten the distance between the reactor main container and the new fuel storage room and the spent fuel storage room, so as to facilitate timely meeting the demand of the reactor main container for new fuel and the decommissioning and transportation of spent fuel.

[0041] For example, the new fuel storehouse is arranged in the range of -17.00m to 0.00m in height, and the spent fuel storehouse is arranged at a height of -8.50m.

[0042] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0043] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A layout structure for a lead-bismuth subcritical fast reactor reactor building, characterized in that: It includes: Reactor body module, primary circuit auxiliary system module, secondary circuit system module, tertiary circuit system module, accident residual heat removal module, electrical instrumentation module, fuel processing module, and auxiliary supporting facilities. The reactor body module is arranged in the middle of the primary loop auxiliary system module, the secondary loop system module, the tertiary loop system module, the accident residual heat removal module, the electrical instrumentation module, the fuel processing module, and the ancillary supporting facilities. The primary loop auxiliary system module, the secondary loop system module, the tertiary loop system module, the accident residual heat removal module, the electrical instrumentation module, the fuel processing module, and the ancillary supporting facilities are arranged around the reactor body module; Taking the reactor body module as a reference, there are four directions: east, west, south and north. The primary loop auxiliary system module is arranged on the west side of the reactor body module, the secondary loop system modules are arranged on the south and north sides of the reactor body module respectively, the tertiary loop system modules are arranged on the south and north sides of the reactor body module respectively, and the tertiary loop system module is arranged on the west side of the secondary loop system module; The accident waste heat removal modules are respectively arranged on the west side of the primary circuit auxiliary system module and the tertiary circuit system module; The electrical instrumentation module is arranged on the south and north sides of the reactor body module, the secondary circuit system module and the tertiary circuit system module; The fuel processing module is arranged on the east side of the reactor body module. The auxiliary supporting facilities are arranged on the east side of the reactor body module and the fuel processing module.

2. The arrangement according to claim 1, characterized in that It is divided into an above-ground area and an underground area. The underground area includes the first to third floors, and the above-ground area includes the fourth to sixth floors. The reactor body module and the primary auxiliary system module are integrally arranged on the first and second floors of the underground area; The accident residual heat removal module is arranged on the fourth and fifth floors of the above-ground area; The secondary circuit system module, the tertiary circuit system module, the electrical instrumentation module, the fuel processing module and the auxiliary supporting facilities are arranged to span the above-ground area and the underground area. Among them, the two-circuit system module is arranged on the second to fifth floors, the three-circuit system module is arranged on the third to fifth floors, the electrical equipment module is arranged on the third to sixth floors, the fuel processing module is arranged on the second to fourth floors, and the ancillary facilities are arranged on the first to sixth floors.

3. The arrangement according to claim 2, characterized in that The reactor body module is arranged at the center of the first layer and the second layer, and includes a reactor pit, a reactor main container and a reactor core system; The reactor pit is arranged in the first layer, the reactor main vessel is supported in the reactor pit and extends to the second layer, and the reactor core system is arranged inside the reactor main vessel.

4. The arrangement according to claim 3, characterized in that The primary circuit auxiliary system module includes a primary circuit overpressure protection system, an emergency gas treatment system, a covering gas analysis and detection system, a primary circuit Po removal system, a fuel damage detection system, an argon purge and decay system, a primary circuit lead-bismuth oxygen control system, a primary circuit lead-bismuth analysis and detection system, a primary circuit lead-bismuth purification system, a primary circuit lead-bismuth pump cooling system, and a primary circuit lead-bismuth storage and charging and discharging system; The primary circuit overpressure protection system, emergency gas treatment system, cover gas analysis and detection system, primary circuit Po removal system, fuel damage detection system, argon purge and decay system are arranged on the first layer and around the reactor pit; The primary lead-bismuth oxygen control system, the primary lead-bismuth analysis and detection system, and the primary lead-bismuth purification system are arranged on the second layer and above the heap pit; The primary-loop lead-bismuth pump cooling system is arranged on the second layer and is respectively arranged on the south and north sides above the pile pit; The primary lead-bismuth storage and filling and exhaust system is arranged on the second layer, which is arranged on the east side of the primary lead-bismuth pump cooling system and is adjacent to the reactor main container and the secondary system module.

5. The arrangement according to claim 4, characterized in that The primary lead-bismuth storage and charging and discharging system includes a lead-bismuth storage tank process room, a lead-bismuth configuration process room, and a lead-bismuth analysis process room; The lead-bismuth analysis process room is located on the east side of the lead-bismuth storage tank process room. The lead-bismuth storage tank process room and the lead-bismuth configuration process room are arranged on the east side of the primary-loop lead-bismuth pump cooling system, and the lead-bismuth storage tank process room is arranged adjacent to the reactor main container and the secondary-loop system module located on the second layer.

6. The arrangement according to claim 3, characterized in that The secondary circuit system module includes a secondary circuit main cooling system, a secondary circuit lead-bismuth analysis and detection system, a secondary circuit lead-bismuth purification system, a secondary circuit lead-bismuth oxygen control system, a secondary circuit lead-bismuth storage and charging and exhaust system, and a secondary circuit lead-bismuth pump cooling system; The secondary circuit main cooling system is arranged on the third layer and is respectively arranged on the south and north sides of the reactor main container. The secondary circuit main cooling system is configured to be in fluid communication with the secondary circuit lead-bismuth purification system, the secondary circuit lead-bismuth oxygen control system, and the secondary circuit lead-bismuth analysis and detection system; The secondary lead-bismuth purification system, the secondary lead-bismuth oxygen control system, the secondary lead-bismuth analysis and detection system, the secondary lead-bismuth storage and charging and discharge system, and the secondary lead-bismuth pump cooling system are respectively arranged on the second floor, the fourth floor, and the fifth floor.

7. The arrangement according to claim 6, characterized in that The three-circuit system module is provided with an air heat exchange system. The air heat exchange system is arranged on the third floor and on the west side of the secondary circuit main cooling system.

8. The arrangement according to claim 7, characterized in that The accident waste heat removal module includes an emergency waste heat removal system process room and an emergency waste heat removal system pipeline. The emergency waste heat removal system process room is arranged on the fourth floor, extends through the fifth floor to the outside of the plant, and is arranged on the west side of the air heat exchange system. The emergency waste heat removal system pipeline is arranged on the fourth and fifth floors, and is arranged to be connected to the secondary circuit main cooling system and the air heat exchange system arranged on the third floor from above respectively.

9. The arrangement according to claim 3, characterized in that The electrical equipment module includes a diesel generator set, a power distribution room of the power supply system and an instrument equipment room; The diesel generator set and the power distribution room of the power supply system are arranged on the third and fourth floors, and are arranged on the south and north sides of the reactor body module, the secondary circuit system module and the tertiary circuit system module; The instrument equipment room is arranged on the fifth floor and is arranged on the south and north sides of the reactor body module, the secondary loop system module and the tertiary loop system module.

10. The arrangement according to claim 3, characterized in that The fuel processing module includes a new fuel storehouse and a spent fuel storehouse. The new fuel storage room is arranged on the second to fourth floors and on the east side of the reactor main container. The spent fuel storehouse is arranged on the third floor and on the north side of the new fuel storehouse.

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