Arrangement for lead-bismuth subcritical fast reactor reactor building
By adopting a layered layout structure for the lead-bismuth subcritical fast reactor building, the problem of unreasonable building layout was solved, achieving compactness and improved economy, while ensuring safety and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA INSTITUTE OF ATOMIC ENERGY
- Filing Date
- 2024-12-25
- Publication Date
- 2026-06-05
Smart Images
Figure CN119811720B_ABST
Abstract
Description
Technical Field
[0001] The embodiments of this application relate to the technical field of nuclear power plant building layout, specifically to a layout structure for a lead-bismuth subcritical fast reactor building. Background Technology
[0002] The statements herein are provided merely as background information in connection with this 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 primary and secondary loops. The reactor and the primary loop system are placed in the reactor vessel. The secondary loop removes heat from the reactor, and the tertiary loop removes heat from the secondary loop to the atmosphere through a lead-bismuth-air heat exchanger. Summary of the Invention
[0004] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.
[0005] The embodiments of this application provide an arrangement structure for a lead-bismuth subcritical fast reactor building, which includes: a reactor body module, a primary loop auxiliary system module, a secondary loop system module, a tertiary loop system module, an accident residual heat removal module, an electrical and instrumentation equipment module, a fuel processing module, and auxiliary supporting facilities.
[0006] The reactor body module is located in the middle of the primary loop auxiliary system module, secondary loop system module, tertiary loop system module, accident residual heat removal module, electrical and instrumentation equipment module, fuel processing module, and auxiliary facilities. The primary loop auxiliary system module, secondary loop system module, tertiary loop system module, accident residual heat removal module, electrical and instrumentation equipment module, fuel processing module, and auxiliary facilities are arranged around the reactor body module.
[0007] Based on the reactor body module, there are four directions: east, west, south, and north. The primary loop auxiliary system module is located on the west side of the reactor body module, the secondary loop system modules are located on the south and north sides of the reactor body module, the tertiary loop system modules are located on the south and north sides of the reactor body module, and the tertiary loop system module is located on the west side of the secondary loop system module.
[0008] The residual heat removal modules are located on the west side of the primary loop auxiliary system module and the tertiary loop system module, respectively; the electrical and instrumentation modules are located on the south and north sides of the reactor body module, the secondary loop system module, and the tertiary loop system module; the fuel processing module is located on the east side of the reactor body module, and the auxiliary facilities are located 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 this application, a compact layout of the lead-bismuth subcritical fast reactor building can be achieved, improving the rationality and economy of the layout of the lead-bismuth subcritical fast reactor building and reducing production and construction costs. Attached Figure Description
[0010] Other objects and advantages of this application will become apparent from the following description of embodiments of this application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of this application.
[0011] Figure 1 This is a plan view of the layout structure of a lead-bismuth subcritical fast reactor building according to an embodiment of this application.
[0012] Explanation of reference numerals in the attached figures:
[0013] 10. Reactor body module; 20. Primary loop auxiliary system module; 30. Secondary loop system module; 40. Tertiary loop system module; 50. Emergency residual heat removal module; 60. Electrical and instrumentation equipment module; 70. Fuel processing module; 80. Ancillary facilities.
[0014] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding. Detailed Implementation
[0015] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.
[0016] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the equipment structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.
[0017] The inventors of this application have discovered that due to the characteristics of lead-bismuth subcritical fast neutron reactors and the differences in coolant and process system settings, the layout of different lead-bismuth fast reactor buildings varies greatly. However, domestic research focuses on the division of nuclear island buildings and the layout of building clusters, lacking a layout and compact design scheme for lead-bismuth fast reactor buildings.
[0018] To address the aforementioned problems, embodiments of this application propose an arrangement structure for a lead-bismuth subcritical fast reactor building, such as... Figure 1 As shown, Figure 1 This invention provides a schematic plan view of the layout structure of a lead-bismuth subcritical fast reactor building according to an embodiment of this application. The layout structure includes:
[0019] The reactor body module 10 comprises a primary loop auxiliary system module 20, a secondary loop system module 30, a tertiary loop system module 40, an accident residual heat removal module 50, an electrical and instrumentation equipment module 60, a fuel processing module 70, and auxiliary facilities 80. The reactor body module 10 is located in the middle of the primary loop auxiliary system module 20, secondary loop system module 30, tertiary loop system module 40, accident residual heat removal module 50, electrical and instrumentation equipment module 60, fuel processing module 70, and auxiliary facilities 80, which are arranged around the reactor body module 10. Based on the reactor body module 10, it has east and west... In the four directions of west, south, and north, the primary loop auxiliary system module 20 is located on the west side of the reactor body module 10; the secondary loop system module 30 is located on the south and north sides of the reactor body module 10; the tertiary loop system module 40 is located on the south and north sides of the reactor body module 10; and the tertiary loop system module 40 is located on the west side of the secondary loop system module 30. The emergency residual heat removal module 50 is located on the west side of the primary loop auxiliary system module 20 and the tertiary loop system module 40. The electrical and instrumentation module 60 is located 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 located on the east side of the reactor body module 10, and the auxiliary facilities 80 are located 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 this application, a compact layout of the lead-bismuth subcritical fast reactor building can be achieved, improving the rationality and economy of the layout of the lead-bismuth subcritical fast reactor building and reducing production and construction costs.
[0021] In some embodiments, the layout structure is divided into above-ground and underground areas. The underground area includes a first to a third floor, and the above-ground area includes a fourth to a sixth floor. The reactor body module 10 and the primary loop auxiliary system module 20 are integrally located on the first and second floors of the underground area; the accident residual heat removal module 50 is located on the fourth and fifth floors of the above-ground area; the secondary loop system module 30, the tertiary loop system module 40, the electrical and instrumentation equipment module 60, the fuel processing module 70, and the auxiliary facilities 80 are arranged to span the above-ground and underground areas, wherein the secondary loop system module 30 is located on the second to fifth floors, the tertiary loop system module 40 is located on the third to fifth floors, the electrical and instrumentation equipment module 60 is located on the third to the sixth floors, the fuel processing module 70 is located on the second to the fourth floors, and the auxiliary facilities 80 are located on the first to the sixth floors.
[0022] This embodiment achieves a compact layout of the lead-bismuth subcritical fast reactor building by setting the layout structure into a layered structure, thereby extending the reactor building longitudinally and reducing the lateral space requirements. At the same time, by placing the reactor body module 10 and the primary loop auxiliary system module 20 entirely in the underground area, as well as some of the secondary loop system module 30, tertiary loop system module 40, electrical and instrumentation equipment module 60, fuel processing module 70 and ancillary 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 in 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 in 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 located at the center of the first layer and the second layer, and includes a crater, a main reactor vessel, and a reactor core system; the crater is located in the first layer, the main reactor vessel is supported in the crater and extends into the second layer, and the reactor core system is located inside the main reactor vessel.
[0025] For example, the main reactor vessel can be supported in the crater by a suspension support, with its upper surface extending to -17.00m.
[0026] In some embodiments, the primary loop auxiliary system module 20 includes a primary loop overpressure protection system, an emergency gas processing system, a cover gas analysis and detection system, a primary loop Po removal system, a fuel damage detection system, an argon purging 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 / discharging system.
[0027] The primary loop overpressure protection system, emergency gas handling system, cover gas analysis and detection system, primary loop Po removal system, fuel damage detection system, and argon purging and decay system are located on the first layer and surround the reactor pit. The primary loop lead-bismuth oxygen control system, primary loop lead-bismuth analysis and detection system, and primary loop lead-bismuth purification system are located on the second layer and above the reactor pit. The primary loop lead-bismuth pump cooling system is located on the second layer and is respectively located on the south and north sides of the upper layer of the reactor pit. The primary loop lead-bismuth storage and charging / discharging system is located on the second layer, located to the east of the primary loop lead-bismuth pump cooling system, and is adjacent to the reactor main vessel and secondary loop system module 30.
[0028] In this embodiment, the above-mentioned arrangement facilitates the improvement of the coordination between the functions of each system in the primary loop auxiliary system module 20 and the requirements of the reactor body module 10. At the same time, it further compacts the layout, shortens the pipeline arrangement, and improves the rationality and economy of the layout of the lead-bismuth subcritical fast reactor building.
[0029] In some embodiments, the primary loop lead-bismuth storage and charging / discharging system includes a lead-bismuth storage tank process room, a lead-bismuth preparation process room, and a lead-bismuth analysis process room. The lead-bismuth analysis process room is located east of the lead-bismuth storage tank process room, and the lead-bismuth storage tank process room and the lead-bismuth preparation process room are located east of the primary loop lead-bismuth pump cooling system. Furthermore, the lead-bismuth storage tank process room is located adjacent to the reactor main vessel and the portion of the secondary loop system module 30 located on the second layer. For example, the lead-bismuth storage tank process room is located at a height of -17.00m.
[0030] This embodiment requires that the lead-bismuth storage and charging / discharging system in the primary loop be located close to the lead-bismuth storage tank process room of the reactor main vessel and the secondary loop system module 30, so as to facilitate a more compact and rational layout and improve the coordination of the operation.
[0031] In some embodiments, the secondary loop system module 30 includes a secondary loop main cooling system, a secondary loop lead-bismuth analysis and detection system, a secondary loop lead-bismuth purification system, a secondary loop lead-bismuth oxygen control system, a secondary loop lead-bismuth storage and charging / discharging system, and a secondary loop lead-bismuth pump cooling system.
[0032] The secondary loop main cooling system is located on the third layer, and is located on the south and north sides of the main reactor vessel. The secondary loop main cooling system is fluidly connected to the secondary loop lead-bismuth purification system, the secondary loop lead-bismuth oxygen control system, and the secondary loop lead-bismuth analysis and detection system. The secondary loop lead-bismuth purification system, the secondary loop lead-bismuth oxygen control system, the secondary loop lead-bismuth analysis and detection system, the secondary loop lead-bismuth storage and charging / discharging system, and the secondary loop lead-bismuth pump cooling system are located on the second, fourth, and fifth layers, respectively.
[0033] This embodiment, through the above-described configuration, facilitates the coordination and cooperation between the secondary loop system module 30, the reactor main vessel, and the primary loop auxiliary system module 20, so as to remove heat from the reactor vessel through the primary loop.
[0034] In some embodiments, the secondary main cooling system includes an air cooler, a buffer tank, and an intermediate heat exchanger.
[0035] In some embodiments, the three-loop system module 40 is provided with an air heat exchange system, which is located on the third layer and to the west of the two-loop main cooling system.
[0036] For example, the air heat exchange system is set at a height of -8.50m.
[0037] In some embodiments, the air heat exchange system is positioned close to the buffer tank of the secondary main cooling system.
[0038] In some embodiments, the emergency waste heat removal module 50 includes an emergency waste heat removal system process room and emergency waste heat removal system piping. The emergency waste heat removal system process room is located on the fourth floor, extends through the fifth floor to the outside of the plant, and is located to the west of the air heat exchange system. The emergency waste heat removal system piping is located on the fourth and fifth floors, and is configured to connect from above to the secondary main cooling system and the air heat exchange system located on the third floor, respectively. This is to ensure that, in the event of an accident and failure of the reactor's normal heat dissipation function, the reactor waste heat can be promptly discharged to the outside of the plant.
[0039] In some embodiments, the electrical equipment module 60 includes a diesel generator set, a power supply system distribution room, and an instrumentation room; the diesel generator set and the power supply system distribution room are located on the third and fourth floors, and 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 instrumentation room is located on the fifth floor, and on the south and north sides of the reactor body module, the secondary loop system module 30, and the tertiary loop system module 40.
[0040] In some embodiments, the fuel handling module 70 includes a new fuel storage room and a spent fuel storage room. The new fuel storage room is located on the second to fourth floors and on the east side of the main reactor vessel. The spent fuel storage room is located on the third floor and on the north side of the new fuel storage room. This arrangement is to shorten the distance between the main reactor vessel and the new fuel storage room and the spent fuel storage room, thereby facilitating the timely fulfillment of the main reactor vessel's demand for new fuel and the decommissioning and transfer of spent fuel.
[0041] For example, the new fuel storage facility is located at a height range of -17.00m to 0.00m, while the spent fuel storage facility is located at a height of -8.50m.
[0042] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.
[0043] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.
Claims
1. An arrangement structure for a lead-bismuth subcritical fast reactor building, characterized in that, It includes: The reactor body module, primary loop auxiliary system module, secondary loop system module, tertiary loop system module, accident residual heat removal module, electrical and instrumentation equipment module, fuel processing module, and ancillary facilities. The reactor body module is located 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 and instrumentation equipment module, the fuel processing module, and the auxiliary 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 and instrumentation equipment module, the fuel processing module, and the auxiliary facilities are arranged around the reactor body module. Based on the reactor body module, it has four directions: east, west, south, and north. The primary loop auxiliary system module is located on the west side of the reactor body module, the secondary loop system modules are located on the south and north sides of the reactor body module, the tertiary loop system modules are located on the south and north sides of the reactor body module, and the tertiary loop system module is located on the west side of the secondary loop system module. The emergency waste heat removal modules are respectively located on the west side of the primary loop auxiliary system module and the tertiary loop system module; The electrical and instrumentation modules are located on the south and north sides of the reactor body module, the secondary loop system module, and the tertiary loop system module. The fuel processing module is located on the east side of the reactor body module. The ancillary facilities are located on the east side of the reactor body module and the fuel processing module; It is divided into above-ground and underground areas. 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 loop auxiliary system module are collectively located on the first and second floors of the underground area; The waste heat removal module is installed on the fourth and fifth floors of the above-ground area; The secondary circuit system module, the tertiary circuit system module, the electrical equipment module, the fuel processing module, and the ancillary facilities are arranged to span both the above-ground and underground areas. The dual-loop system module is located on the second to fifth floors, the triple-loop system module is located on the third to fifth floors, the electrical and instrumentation equipment module is located on the third to sixth floors, the fuel processing module is located on the second to fourth floors, and the auxiliary facilities are located on the first to sixth floors. The reactor body module is located at the center of the first layer and the second layer, and includes a reactor pit, a main reactor vessel, and a reactor core system. The crater is located in the first layer, the main reactor vessel is supported in the crater and extends to the second layer, and the reactor core system is located inside the main reactor vessel; The primary loop auxiliary system module includes a primary loop overpressure protection system, an emergency gas processing system, a covering gas analysis and detection system, a primary loop Po removal system, a fuel damage detection system, an argon purging 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 / discharging system. The primary loop overpressure protection system, emergency gas handling system, cover gas analysis and detection system, primary loop Po removal system, fuel damage detection system, and argon purging and decay system are installed in the first layer and surround the crater. The primary lead-bismuth oxygen control system, the primary lead-bismuth analysis and detection system, and the primary lead-bismuth purification system are located in the second layer and above the pile pit; The primary lead-bismuth pump cooling system is located on the second layer, and is respectively located on the south and north sides above the crater. The primary loop lead-bismuth storage and charging / discharging system is located on the second layer, east of the primary loop lead-bismuth pump cooling system, and adjacent to the reactor main vessel and the secondary loop system module.
2. The arrangement structure according to claim 1, characterized in that, The primary lead-bismuth storage and filling / discharging system includes a lead-bismuth storage tank process room, a lead-bismuth preparation process room, and a lead-bismuth analysis process room. The lead-bismuth analysis process room is located to the east of the lead-bismuth storage tank process room. The lead-bismuth storage tank process room and the lead-bismuth preparation process room are located on the east side of the primary loop lead-bismuth pump cooling system, and the lead-bismuth storage tank process room is located adjacent to the reactor main vessel and the secondary loop system module located on the second layer.
3. The arrangement structure according to claim 1, characterized in that, The dual-loop system module includes a dual-loop main cooling system, a dual-loop lead-bismuth analysis and detection system, a dual-loop lead-bismuth purification system, a dual-loop lead-bismuth oxygen control system, a dual-loop lead-bismuth storage and charging / discharging system, and a dual-loop lead-bismuth pump cooling system. The secondary loop main cooling system is located on the third layer, and is respectively located on the south and north sides of the main reactor vessel. The secondary main cooling system is configured to be in fluid communication with the secondary lead-bismuth purification system, the secondary lead-bismuth oxygen control system, and the secondary lead-bismuth analysis and detection system; The dual-loop lead-bismuth purification system, the dual-loop lead-bismuth oxygen control system, the dual-loop lead-bismuth analysis and detection system, the dual-loop lead-bismuth storage and charging / discharging system, and the dual-loop lead-bismuth pump cooling system are respectively located on the second layer, the fourth layer, and the fifth layer.
4. The arrangement structure according to claim 3, characterized in that, The three-loop system module is equipped with an air heat exchange system. The air heat exchange system is located on the third floor and to the west of the secondary main cooling system.
5. The arrangement structure according to claim 4, characterized in that, The emergency waste heat removal module includes an emergency waste heat removal system process room and emergency waste heat removal system pipelines. The emergency waste heat removal system is located on the fourth floor, extends through the fifth floor to the outside of the plant, and is situated to the west of the air heat exchange system. The emergency waste heat discharge system piping is located on the fourth and fifth floors, and is configured to connect from above to the secondary main cooling system and the air heat exchange system located on the third floor.
6. The arrangement structure according to claim 1, characterized in that, The electrical equipment module includes a diesel generator set, a power supply system distribution room, and an instrumentation room. The diesel generator set and the power supply system distribution room are located on the third and fourth floors, and on the south and north sides of the reactor body module, the secondary loop system module and the tertiary loop system module. The instrumentation room is located on the fifth floor, and is situated to the south and north of the reactor body module, the secondary loop system module, and the tertiary loop system module.
7. The arrangement structure according to claim 1, characterized in that, The fuel processing module includes a new fuel storage facility and a spent fuel storage facility. The new fuel storage facility is located on the second to fourth floors, and is situated on the east side of the main reactor vessel. The spent fuel storage facility is located on the third floor and to the north of the new fuel storage facility.