Reactor plant layout method and reactor plant

Abstract

The present invention discloses a method for arranging a reactor building, comprising the following steps: arranging a pit in the reactor building, a primary shielding wall, and a pressure vessel in a reactor coolant system in a space below an elevation of 0 m in a containment vessel; arranging an internal heat exchanger tank, a safety injection tank, a core water supply tank, and a containment continuous ventilation system unit in the reactor building in a space above an elevation of 0 m in the containment vessel. The present invention also discloses a reactor building. The present invention can optimize the internal structure of the containment vessel, realize the layout design of a high-level water tank in the containment vessel, enable the passive safety system to independently realize the safety function, and greatly improve the safety and economy of the reactor building.

Description

Technical Field

[0001] The invention belongs to the field of nuclear engineering, and in particular relates to a reactor plant layout method and a reactor plant. Background Art

[0002] The characteristic of a passive safety system is that it relies on inherent characteristics such as pressure, temperature, and flow to achieve safety functions. Theoretically, the use of an "active + passive" safety system design can reduce the use of active safety-level equipment.

[0003] The Hualong One reactor adopts the "active + passive" safety system design concept. Its reactor coolant system (RCS) adopts a three-loop design. The main equipment includes 1 pressure vessel (RPV), 3 evaporators (SG), 3 main coolant pumps (RCP), 1 pressurizer (PRZ), 1 pressure relief box, and 3 hot sections / cold sections / transition sections.

[0004] like Figure 7 As shown in the figure, taking the vertical support rooting elevation of the bottom of SG / RCP as the 00 elevation (i.e., ±0.0m layer), the internal structure of the containment of Hualong One is mainly divided into seven layout layers. Below the ±0.0m layer, there are -6.7m layer and -3.3m layer, and above the ±0.0m layer, there are +3.6m layer, +7.5m layer, +13.5m layer, and +16.5m layer. Among them, the ±0.0m layer is mainly arranged with RCS area, auxiliary equipment area, inner annular area of ​​shell, and reactor cavity water injection tank and other items; the -6.7m layer is mainly arranged with steam generator and main coolant pump in the three-loop, as well as the internal refueling water tank (IRWST) below the inner annular area of ​​shell, safety water tank, core water tank, safety injection water tank, auxiliary area, penetration area, and reactor component storage pool The -3.3m layer is mainly arranged with the safety injection box (ACC)*3 and CCV unit*3, RPV, and primary biological shielding wall items extending upward from the -6.7m layer; the main structures of the layers above the ±0.0m layer are basically the same, the +3.5m, +7.5m, and +13.5m layers are mainly arranged with the RCS area, auxiliary equipment area, inner shell annular area, reactor cavity water injection tank, and reactor internal component storage pool items extending upward from the ±0.0m layer; the +16.5m layer is the operating platform, which is mainly arranged with the steam generator in the three loops extending upward from the RCS area of ​​the ±0.0m layer, as well as the safety water tank and other items.

[0005] The passive safety system of Hualong One mainly includes three items, namely, the cavity water injection tank of the cavity water injection system (CIS), the secondary side passive residual heat removal system (PRS) and the passive containment heat extraction system (PCS). Among them, the PRS / PCS can be used as an independent and complete passive safety system to deal with the design basis accident (DBA) condition; PCS can be used as an independent and complete passive safety system to extract the heat of the atmosphere in the containment under the beyond design basis accident (DEC) condition; and only the cavity water injection tank in the CIS is a passive setting, which cannot be used as an independent and complete passive safety system to achieve the retention of the core melt in the RPV. Under the DEC condition, if the active safety systems such as the containment spray system (CSP) and the safety injection system (RSI) are not started and only the PCS / CIS is relied on to realize the safety function, it must rely on the support of the electric pump in the CIS to realize the safety function of transferring heat from the core to the atmosphere outside the containment. In other words, the "active + passive" safety system design of Hualong One has at least the following deficiencies:

[0006] (1) Due to layout restrictions, the general area and space in the containment is required for the layout of the RCS and the storage pool for the reactor internal components. The remaining area and space are also required to accommodate the layout of other equipment, pipelines, cables, and passages and civil structures, resulting in an extreme lack of space for the layout of water tanks in the containment. Under DEC conditions, if the RCS breaches, the entire area from the -6.7 layer to the 0.0m layer and part of the area above the +3.6m layer need to be flooded, and the amount of water required is very large (about 13,000 m 3 ), and the capacity of the reactor cavity injection tank in the CIS is limited, and the amount of water available for DEC flooding is only 1500m 3 It is far from enough to realize the requirement of passively submerging the RCS breach completely in water and then relying on natural circulation methods such as evaporation and cooling to remove the core heat. The passive safety system CIS / PCS / PRS cannot rely solely on passive methods to transfer heat from the core to the atmosphere outside the containment. That is, the passive system of Hualong One cannot realize the safety function under DEC conditions alone. Without the active safety system, the passive system is basically a decoration, and it is impossible to truly achieve the purpose of reducing the use of active safety-level equipment by relying on the passive safety system.

[0007] (2) The active safety system itself was designed with the ability to independently implement safety functions under DEC conditions. In other words, although Hualong One has added a "passive" safety system, the safety has not actually increased much. On the contrary, the cost has increased due to the addition of equipment for the "passive" safety system, resulting in poor economic efficiency. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a reactor building layout method and a reactor building in view of the above-mentioned deficiencies in the prior art. The method can optimize the internal structure of the containment, realize the layout design of the high-level water tank in the containment, enable the passive safety system to independently realize the safety function, and greatly improve the safety and economy of the reactor building.

[0009] According to one aspect of the present invention, the present invention provides a method for arranging a reactor building, and the technical solution thereof is as follows:

[0010] A method for arranging a reactor building comprises the following steps:

[0011] The pit in the reactor building, the primary shielding wall, and the pressure vessels in the reactor coolant system are arranged in the space below the 0m elevation in the containment;

[0012] The built-in hot water replacement tank, safety injection tank, core water supply tank, and containment continuous ventilation system unit (CCV unit) in the reactor building are arranged in the space above the 0m elevation inside the containment.

[0013] Preferably, the arrangement of the internal hot water replacement tank, the safety injection tank, the core water supply tank, and the CCV unit in the reactor building in a space above an elevation of 0 m in the containment specifically includes:

[0014] The space above the 0m elevation in the containment is divided into four layers, namely the first layer, the second layer, the third layer, and the fourth layer from bottom to top. The built-in heat exchange water tank is arranged in the first layer, the safety injection tank and the core water supply tank are arranged in the third layer and extended upward to the fourth layer, and the CCV unit is arranged in the fourth layer.

[0015] Preferably, the method further comprises:

[0016] The safety water tank in the reactor building and the evaporator room, the main coolant pump room, and the first pipeline valve room are arranged in the first floor, and the safety water tank, the evaporator room, and the main coolant pump room are respectively extended upward to the fourth floor, the evaporator in the reactor coolant system is arranged in the evaporator room, the main coolant pump in the reactor coolant system is arranged in the main coolant pump room, and the pressurizer in the reactor coolant system is arranged in the first pipeline valve room;

[0017] The reactor internals storage pool, the surge tube room, the second pipeline valve room and the first personnel gate in the reactor building are arranged in the second layer, and the passive core cooling system (PXS) pipelines and valves and the main feed water outlet in the reactor building are arranged in the second pipeline valve room;

[0018] The third pipeline valve room and the second personnel gate are arranged in the third floor, and the main steam pipeline and water supply pipeline in the reactor building are arranged in the third pipeline isolation room;

[0019] The equipment gates in the reactor building are arranged on the fourth floor.

[0020] Preferably, the method further comprises:

[0021] The fourth pipeline valve room is arranged in the second layer, and the pipelines and valves of the chemical and volume control systems in the reactor building are arranged in the fourth pipeline valve room;

[0022] The fifth pipeline valve room is arranged in the third layer, and the heat exchanger of the chemical and volume control system in the reactor building is arranged in the fifth pipeline valve room.

[0023] Preferably, the heat exchanger in the CCV unit uses a heat transfer tube, which is arranged on the inner wall of the containment in the fourth layer, and an operating platform is provided below the heat transfer tube, and the fan in the CCV unit is arranged on the operating platform.

[0024] Preferably, the method further comprises:

[0025] A stack top cover storage room is arranged in the built-in hot water replacement tank and / or the safety water tank in the fourth layer.

[0026] Preferably, the elevation of the space below the 0m elevation is set to -5.46m; the elevation of the first floor is set to ±0.00m; the elevation of the second floor is set to +5.00m; the elevation of the third floor is set to +10.00m; and the elevation of the fourth floor is set to +16.5.00m.

[0027] According to another aspect of the present invention, the present invention provides an air conditioning refrigeration method, and its technical solution is:

[0028] A reactor building, comprising a containment shell, wherein the internal space of the containment shell is divided into a space below an elevation of 0 m and a space above an elevation of 0 m, wherein a pit in the reactor building, a primary shielding wall, and a pressure vessel in a reactor coolant system are arranged in the space below the elevation of 0 m;

[0029] The space above the 0m elevation is arranged with the internal replacement hot water tank, the safety injection tank, the core water supply tank, and the CCV unit in the reactor building.

[0030] Preferably, the space above the 0m elevation includes four floors, which are the first floor, the second floor, the third floor, and the fourth floor from bottom to top, wherein:

[0031] The built-in hot water tank is arranged in the first layer;

[0032] The safety injection tank and the core water supply tank are arranged in the third layer and extend upward to the fourth layer;

[0033] The CCV unit is arranged in the fourth layer.

[0034] Preferably, the first layer is further provided with an evaporator room, a main coolant pump room, a first pipeline valve room, and a safety water tank in the reactor building, and the safety water tank, the evaporator room, and the main coolant pump room extend upward to the fourth layer respectively, the safety water tank and the first pipeline valve room are respectively arranged on opposite sides of the containment, the evaporator room and the main coolant pump room are both arranged between the safety water tank and the first pipeline valve room, the internal heat exchange water tank is arranged near the inner wall of the containment, and surrounds the safety water tank, the evaporator room, and the main coolant pump room, the evaporator room is used to arrange the evaporator in the reactor coolant system, the main coolant pump room is used to arrange the main coolant pump in the reactor coolant system, and the first pipeline valve room is used to arrange the pressurizer in the reactor coolant system;

[0035] The second layer is provided with a second pipeline valve room, a surge pipe room, a first personnel gate, and a storage pool for in-core components in the reactor building, and the second pipeline valve room is located above the internal hot water exchange tank and is used for arranging PXS pipelines and valves, and a main feedwater outlet, the surge pipe room and the storage pool for in-core components are both located above the first pipeline valve room, the surge pipe room is used for arranging the surge pipe in the reactor building, and the first personnel gate is provided on the containment shell and is used for personnel to enter and exit the containment shell;

[0036] The third layer is also provided with a third pipeline valve room and a second personnel gate. The third pipeline valve room is arranged above the first pipeline valve room and is used for arranging the main steam pipeline and water supply pipeline in the reactor building. The second personnel gate is passed through the containment and is used for personnel to enter and exit the containment.

[0037] An equipment gate is also arranged in the fourth layer. The equipment gate penetrates the containment shell and is used for equipment in the reactor building to enter and exit the containment shell.

[0038] Preferably, a fourth pipeline and valve room is arranged in the second layer for arranging pipelines and valves in chemical and volume control systems;

[0039] The third layer is also provided with a fifth pipeline valve room for arranging heat exchangers in chemical and volume control systems.

[0040] Preferably, the CCV unit includes a heat exchanger and a fan, the heat exchanger in the CCV unit is a heat transfer tube, which is arranged on the inner wall of the containment in the fourth layer, and an operating platform is provided on the inner wall of the containment in the fourth layer, and the operating platform is located below the heat transfer tube and is used to arrange the fan.

[0041] Preferably, a stack top cover storage room is provided in the built-in hot water tank and / or the safety water tank, and the stack top cover storage room is located in the fourth layer.

[0042] Beneficial effects:

[0043] Compared with the prior art, the present invention can optimize the internal structure of the containment, reduce the space required for flooding during DEC operation, and reduce the demand for flooding water (can be reduced by 9000m 3 By optimizing the layout of the internal heat exchange water tank, the safety injection tank, and the core make-up water tank, the layout design of the high-level water tank in the containment can be realized and the water volume in the containment can be increased, so that the passive safety system can completely realize the safety function independently and realize the complete passive safety system design, thereby simplifying the design of the active safety system of the nuclear power plant, and truly realizing the purpose of reducing the use of active safety-level equipment by relying on the passive safety system, thereby improving the safety and economy of the reactor building and greatly reducing the construction cost and operation and maintenance cost of the nuclear power plant. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a cross-sectional view of the space below the 0m elevation of the reactor building in an embodiment of the present invention;

[0045] Figure 2 is a cross-sectional view of the first layer in an embodiment of the present invention;

[0046] Figure 3 is a cross-sectional view of the second layer in an embodiment of the present invention;

[0047] Figure 4 is a cross-sectional view of the third layer in an embodiment of the present invention;

[0048] Figure 5 is a cross-sectional view of the fourth layer in an embodiment of the present invention;

[0049] Figure 6 is a cross-sectional view of the fourth floor of a reactor building in an embodiment of the present invention;

[0050] Figure 7 This is a schematic diagram of the structure of the reactor building of Hualong One.

[0051] In the figure: 1-core, 2-steam generator, 3-main coolant pump, 4-safety injection box, 5-internal replacement water tank, 6-safety water tank, 7-core water supply tank, 8-first personnel gate, 9-penetration area, 10-core component storage pool, 11-shell annular area, 12-staircase elevator room, 13-containment, 14-equipment gate, 15-fuel plant, 16-auxiliary plant, 17-electrical plant; 18-passive filter room, 19-air shaft, 20-PXS pipeline valve room, 21-surge pipe room, 22-RCV pipeline valve room, 23-RCV equipment room, 24-coolant drain tank and shell drain pit. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present invention.

[0053] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “upper” and the like are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0054] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Example 1

[0057] like Figure 1-Figure 5 As shown, this embodiment discloses a method for arranging a reactor building, which includes the following steps:

[0058] Arrange the core 1 at the center of the containment vessel 13;

[0059] The pit in the reactor building, the primary shielding wall, and the pressure vessel in the reactor coolant system are arranged in the space below the elevation of 0 m in the containment vessel 13;

[0060] The internal hot water replacement tank 5 , the safety injection tank 4 , the core water supply tank 7 , and the containment continuous ventilation system unit (CCV unit) in the reactor building are arranged in the space above the 0 m elevation in the containment 13 .

[0061] In some embodiments, the internal hot water replacement tank, the safety injection tank, the core water supply tank, and the CCV unit in the reactor building are arranged in a space above the 0 m elevation in the containment, specifically including:

[0062] The space above the 0m elevation in the containment vessel 13 is divided into four layers, namely the first layer, the second layer, the third layer, and the fourth layer from bottom to top. The built-in hot water tank 5 is arranged in the first layer, the built-in hot water tank 5 is arranged in the first layer, the safety injection tank 4 and the core make-up water tank 7 are arranged in the third layer and extended upward to the fourth layer, and the CCV unit is arranged in the fourth layer.

[0063] In some embodiments, the method further comprises:

[0064] The safety water tank 6 in the reactor building and the evaporator room 2, the main coolant pump room 3, and the first pipeline valve room are arranged in the first floor, and the safety water tank 6, the evaporator room 2, and the main coolant pump room 3 are respectively extended upward to the fourth floor, so that the safety water tank is used as a high-level water tank to obtain a high-level water tank water source, the evaporator (steam generator) in the reactor coolant system is arranged in the evaporator room 2, the main coolant pump in the reactor coolant system is arranged in the main coolant pump room 3, and the pressure regulator in the reactor coolant system is arranged in the first pipeline valve room;

[0065] The second layer is provided with a reactor internal component storage pool 10, a surge tube room 21, a second pipeline valve room and a first personnel gate 8 in the reactor building, and passive core cooling system (PXS) pipelines and valves, as well as a main feed water outlet are arranged in the second pipeline valve room;

[0066] The third pipeline valve room and the second personnel gate (not shown) are arranged in the third layer, and the main steam pipeline and water supply pipeline in the reactor building are arranged in the third pipeline valve room;

[0067] The equipment gates in the reactor building are arranged on the fourth floor.

[0068] Specifically, if Figure 2As shown, in the first layer, the safety water tank 6 and the first pipeline valve room are arranged on opposite sides 14 in the containment shell 13, the evaporator room 2 and the main coolant pump room 3 are arranged between the safety water tank 6 and the first pipeline valve room, the evaporator room 2 and the main coolant pump room 3 can be arranged into multiple sets (such as three sets), the built-in hot water tank 5 is arranged at a position close to the inner wall of the containment shell, the built-in hot water tank 5 is approximately annular, and surrounds the safety water tank 6, the evaporator room 2, and the main coolant pump room, an inner shell annular area 11 is set between the first pipeline valve room and the containment shell 13, which can be used as a passage, the safety water tank 6 is preferably set to a fan shape, and the built-in hot water tank 5 and the safety water tank 6 Occupy or occupy as much as possible all the space except the first pipeline valve room to increase the water capacity of the built-in hot water tank and the safety water tank, and reduce the demand for flooding water during EDC operation; the first pipeline valve room is arranged with multiple compartments such as the passive filter room 18 in the reactor building, the coolant drain tank and the shell drain pit 24, the air shaft 19, the penetration area 9, etc., wherein the passive filter room 18 is connected to the space below the 0m elevation, and the pressure vessel in the reactor coolant system extends upward from the 0m elevation to the passive filter room 18, and the passive filter in the reactor building and the pressurizer in the reactor coolant system can be arranged in the passive filter room 18.

[0069] like Figure 3 As shown, in the second floor, the second pipeline valve room is mainly arranged above the internal heat exchange water tank 5; the internal component storage pool 10 is arranged at a position where it and the surge pipe room 21 are both arranged above the first pipeline valve room, and the surge pipe room 21 is preferably located above the passive filter room, the surge pipe room 21 is used to arrange the surge pipes in the reactor building, the internal component storage pool 10 is used to store the internal components in the reactor building, and can be extended upward to the fourth floor; the first personnel gate 8 is passed through the containment, and a staircase elevator room 12 is arranged near the first personnel gate 8, and the elevator staircase connects the second floor, the third floor, and the fourth floor.

[0070] like Figure 4 As shown, in the third floor, the safety injection tank 4 and the core water supply tank 7 are arranged above the second pipeline valve room; the third pipeline valve room is arranged above the first pipeline valve room; the second personnel gate 8 is passed through the containment 13 and is close to the staircase elevator room 12. Compared with the prior art, by arranging the personnel gates (the first personnel gate 8 and the second personnel gate 82) in the reactor building on the second and third floors, the risk of accident leakage caused by flooding can be avoided.

[0071] like Figure 5 As shown, in the fourth layer, an equipment gate 14 is disposed through the containment shell 13 for allowing equipment to enter and exit the containment shell.

[0072] In this embodiment, the method further includes: Figure 3 As shown, a fourth pipeline valve room (i.e., a chemical and volume control system (RCV) pipeline valve room 22) is also arranged in the second layer. The RCV pipeline valve room 22 is preferably arranged above the penetration area 9. Pipes and valves in the chemical and volume control system in the reactor building are arranged in the fourth pipeline valve room. A fifth pipeline valve room (i.e., an RCV equipment room 23) is arranged in the third pipeline valve room. The RCV equipment room 23 is preferably arranged above the RCV pipeline valve room 22. A heat exchanger in the chemical and volume control system in the reactor building is arranged in the fifth pipeline valve room.

[0073] In this embodiment, the elevation of the space below the 0m elevation is preferably set to -5.46m; the elevation of the second floor is preferably set to +5.00m; the elevation of the third floor is preferably set to +10.00m; and the elevation of the fourth floor is preferably set to +16.5m. Compared with the prior art, the -6.7 and -3.3m floors are eliminated, reducing the space required for flooding in DEC working conditions, which can greatly reduce the demand for flooding water in DEC working conditions.

[0074] In this embodiment, the heat exchanger in the CCV unit preferably uses a heat transfer tube to adapt to the changes in the internal structure of the containment. The heat transfer tube is arranged on the inner wall of the containment in the fourth layer. Compared with the traditional technology, the shell of the heat exchanger in the CCV unit is eliminated, reducing the space requirement. In addition, an operating platform is set below the heat transfer tube, the fan in the CCV unit is arranged on the operating platform, and the safety water tank extends upward to the bottom of the operating platform in the fourth layer.

[0075] In some embodiments, the method further includes: arranging a stack top cover storage room in the built-in hot water tank 5 and / or the safety water tank 6 in the fourth layer. Compared with the prior art, the top cover storage room is prevented from occupying the remaining space for arranging other items in the containment, and at the same time, the shielding problem during the storage of the top cover is solved, avoiding obstacles to the transportation of RCS equipment.

[0076] The reactor building layout method of this embodiment can optimize the internal structure of the containment. Compared with the prior art, it reduces the space required for flooding in DEC conditions and reduces the demand for flooding water (can reduce 9000m 3By optimizing the layout of the internal heat exchange water tank, the safety injection tank, and the core make-up water tank, the layout design of the high-level water tank in the containment can be realized and the water volume in the containment can be increased, so that the passive safety system can completely realize the safety function independently and realize the complete passive safety system design, thereby simplifying the design of the active safety system of the nuclear power plant, and truly realizing the purpose of reducing the use of active safety-level equipment by relying on the passive safety system, thereby improving the safety and economy of the reactor building and greatly reducing the construction cost and operation and maintenance cost of the nuclear power plant.

[0077] Example 2

[0078] like Figure 1-Figure 6 As shown, this embodiment discloses a reactor building, which includes a fuel building 15, an auxiliary building 16, an electrical building 17, and a containment shell 13. The internal space of the containment shell 13 is divided into a space below an elevation of 0 m and a space above an elevation of 0 m, wherein:

[0079] The space below the 0m elevation is where the pit in the reactor building, the primary shielding wall, and the pressure vessel in the reactor coolant system are arranged;

[0080] The space above the 0m elevation is arranged with the internal replacement hot water tank 5, the safety injection tank 4, the core water tank 7, and the containment continuous ventilation system unit (CCV unit) in the reactor building.

[0081] In some embodiments, the space above the 0m elevation includes four layers, namely, the first layer, the second layer, the third layer, and the fourth layer from bottom to top, wherein: the built-in hot water tank 5 is arranged in the first layer; the safety injection tank 4 and the core water supply tank 7 are arranged in the third layer and extend upward to the fourth layer; the CCV unit is arranged in the fourth layer.

[0082] In some embodiments, Figure 2As shown, the first floor is also arranged with an evaporator room 2, a main coolant pump room 3, a first pipeline valve room, and a safety water tank in the reactor building, and the safety water tank 6, the evaporator room 2, and the main coolant pump room 3 extend upward to the fourth floor respectively, the safety water tank 6 and the first pipeline valve room are arranged on opposite sides of the containment 13 respectively, the safety water tank 6 is preferably arranged in a fan shape, the evaporator room 2 and the main coolant pump room 3 are arranged between the safety water tank 6 and the first pipeline valve room, the built-in hot water tank 5 is arranged at a position close to the inner wall of the containment, and the built-in hot water tank 5 is approximately in a circular ring shape, 3 is in an enclosed shape, the evaporator room 2 is used to arrange the evaporator in the reactor coolant system, the main coolant pump room 3 is used to arrange the main coolant pump in the reactor coolant system, and the first pipeline valve room is arranged with a passive filter room 18, a coolant drain tank and a shell drain pit 24, a wind shaft 19, a penetration area 9 and other multiple compartments, wherein the passive filter room 18 is connected to the space below the 0m elevation, and the pressure vessel in the reactor coolant system extends upward from the 0m elevation to the passive filter room 18, and the passive filter room 18 is used to arrange the passive filter in the reactor building and the pressurizer in the reactor coolant system and other equipment;

[0083] like Figure 3 As shown, the second floor is provided with a second pipeline valve room, a surge pipe room 21, a first personnel gate 8, and a reactor internal component storage pool 10 in a nuclear power plant. The second pipeline valve room (i.e., the PXS pipeline valve room 20) is located above the internal heat exchange water tank 5 and is used to arrange the PXS pipeline and valves in the reactor plant, as well as the main feed water outlet. The surge pipe room 21 and the reactor internal component storage pool 10 are both located above the first pipeline valve room, wherein the surge pipe room 21 is preferably located above the passive filter room 18. The surge pipe room 21 is used to arrange the surge pipe in the reactor plant. The reactor internal component storage pool 10 is used to store the reactor internal components in the reactor plant. The first personnel gate 8 is provided on the containment 13, and a staircase elevator room 12 is arranged near the first personnel gate. The elevator staircase connects the second floor and the third floor and is used for personnel to enter and exit the containment.

[0084] like Figure 4 As shown, a third pipeline valve room and a second personnel gate are also arranged in the third floor, and the third pipeline valve room is arranged above the first pipeline valve room, for arranging the main steam pipeline and water supply pipeline in the reactor building, and the second personnel gate 18 is passed through the containment 13 and is close to the staircase elevator room 12, for personnel to enter and exit the containment. Compared with the prior art, by arranging the personnel gates (the first personnel gate and the second personnel gate) on the second and third floors, the risk of accident leakage caused by flooding can be avoided;

[0085] like Figure 5As shown, an equipment gate is also arranged in the fourth layer. The equipment gate 14 is penetrated on the containment shell 13 and is used for the equipment in the reactor building to enter and exit the containment shell.

[0086] In some embodiments, the elevation of the space below the 0m elevation is preferably -5.46m; the elevation of the second floor is preferably +5.00m; the elevation of the third floor is preferably +10.00m; and the elevation of the fourth floor is preferably +16.5.00m. Compared with the prior art, the -6.7 and -3.3m floors are eliminated, reducing the space required for flooding in DEC conditions, which can greatly reduce the demand for flooding water in DEC conditions.

[0087] In some embodiments, Figure 3 As shown, a fourth pipeline valve (with a chemical and volume control system (RCV) pipeline valve room 22) is also arranged in the second layer. The RCV pipeline valve room 22 is preferably arranged above the penetration area 9 and is used to arrange pipelines and valves in the chemical and volume control system. A fifth pipeline valve room (RCV equipment room 23) is also arranged in the third layer. The RCV equipment room is preferably arranged above the RCV pipeline valve room 22 and is used to arrange the heat exchanger in the chemical and volume control system.

[0088] In some embodiments, the CCV unit includes a heat exchanger and a fan, wherein the heat exchanger in the CCV unit preferably uses a heat transfer tube to adapt to changes in the internal structure of the containment, and the heat transfer tube is arranged on the inner wall of the containment in the fourth layer. Compared with traditional technologies, the outer shell of the heat exchanger in the CCV unit is eliminated, reducing space requirements; an operating platform is provided on the inner wall of the containment in the fourth layer, and the operating platform is located below the heat transfer tube for arranging the fan in the CCV unit.

[0089] In some embodiments, a stack cover storage room is provided in the internal heat exchange water tank 5 and / or the safety water tank 6, and the stack cover storage room is located in the fourth layer. Compared with the prior art, the stack cover storage room can avoid occupying the remaining space for other items in the containment, and at the same time, the shielding problem during the storage of the stack cover is solved, avoiding obstacles to the transportation of RCS equipment.

[0090] The reactor building of this embodiment can reduce the space required for flooding in DEC condition and the demand for flooding water (can be reduced by 9000m3) by optimizing the internal structure of the containment compared with the prior art. 3By optimizing the layout of the internal heat exchange water tank, the safety injection tank, and the core make-up water tank, the layout design of the high-level water tank in the containment can be realized and the water volume in the containment can be increased, so that the passive safety system can completely realize the safety function independently and realize the complete passive safety system design, thereby simplifying the design of the active safety system of the nuclear power plant, and truly realizing the purpose of reducing the use of active safety-level equipment by relying on the passive safety system, thereby improving the safety and economy of the reactor building and greatly reducing the construction cost and operation and maintenance cost of the nuclear power plant.

[0091] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A method for arranging a reactor building, characterized in that: The steps include: The pit in the reactor building, the primary shielding wall, and the pressure vessels in the reactor coolant system are arranged in the space below the 0m elevation in the containment; The built-in hot water tank, safety injection tank, core water tank and containment continuous ventilation system unit in the reactor building are arranged in the space above the 0m elevation in the containment, including: The space above the 0m elevation in the containment is divided into four layers, namely the first layer, the second layer, the third layer, and the fourth layer from bottom to top. The internal heat exchanger tank is arranged in the first layer, the safety injection tank and the core water supply tank are arranged in the third layer and extended upward to the fourth layer, and the containment continuous ventilation system unit is arranged in the fourth layer; The invention also includes: arranging a safety water tank in a reactor building, an evaporator room, a main coolant pump room, and a first pipeline valve room in the first floor, and the safety water tank, the evaporator room, and the main coolant pump room respectively extend upward to the fourth floor, arranging an evaporator in the reactor coolant system in the evaporator room, arranging a main coolant pump in the reactor coolant system in the main coolant pump room, and arranging a pressurizer in the reactor coolant system in the first pipeline valve room; The reactor internals storage pool, the surge tube room, the second pipeline valve room and the first personnel gate in the reactor building are arranged in the second layer, and the passive core cooling system pipelines and valves and the main feed water outlet in the reactor building are arranged in the second pipeline valve room; The third pipeline valve room and the second personnel gate are arranged in the third floor, and the main steam pipeline and water supply pipeline in the reactor building are arranged in the third pipeline isolation room; The equipment gates in the reactor building are arranged on the fourth floor.

2. The method for arranging a reactor building according to claim 1, characterized in that: Also includes: The fourth pipeline valve room is arranged in the second layer, and the pipelines and valves of the chemical and volume control systems in the reactor building are arranged in the fourth pipeline valve room; The fifth pipeline valve room is arranged in the third layer, and the heat exchanger of the chemical and volume control system in the reactor building is arranged in the fifth pipeline valve room.

3. The method for arranging a reactor building according to claim 1, characterized in that: The heat exchanger in the containment continuous ventilation system unit adopts a heat transfer tube, which is arranged on the inner wall of the containment in the fourth layer, and an operating platform is set below the heat transfer tube, and the fan in the containment continuous ventilation system unit is arranged on the operating platform.

4. The method for arranging a reactor building according to claim 1, characterized in that: Also includes: A stack top cover storage room is arranged in the built-in hot water replacement tank and / or the safety water tank in the fourth layer.

5. The method for arranging a reactor building according to any one of claims 1 to 4, characterized in that: The elevation of the space below the 0m elevation is set to -5.46m; The elevation of the first layer is set to ±0.00m; The elevation of the second floor is set to +5.00m; The elevation of the third floor is set to +10.00m; The elevation of the fourth floor is set to +16.50m.

6. A reactor building, comprising a containment, wherein the internal space of the containment is divided into a space below an elevation of 0 m and a space above an elevation of 0 m, wherein: The space below the 0m elevation is arranged with the pit in the reactor building, the primary shielding wall, and the pressure vessel in the reactor coolant system; The space above the 0m elevation is equipped with the internal hot water replacement tank, the safety injection tank, the core water supply tank, and the containment continuous ventilation system unit in the reactor building. Specifically, the space above the 0m elevation includes four floors, which are the first floor, the second floor, the third floor, and the fourth floor from bottom to top, wherein: The built-in hot water tank is arranged in the first layer; The safety injection tank and the core water supply tank are arranged in the third layer and extend upward to the fourth layer; The containment continuous ventilation system unit is arranged in the fourth layer; In addition, the first layer is also provided with an evaporator room, a main coolant pump room, a first pipeline valve room, and a safety water tank in the reactor building, and the safety water tank, the evaporator room, and the main coolant pump room extend upward to the fourth layer respectively, the safety water tank and the first pipeline valve room are respectively arranged on opposite sides of the containment, the evaporator room and the main coolant pump room are both arranged between the safety water tank and the first pipeline valve room, the internal heat exchange water tank is arranged near the inner wall of the containment, and surrounds the safety water tank, the evaporator room, and the main coolant pump room, the evaporator room is used to arrange the evaporator in the reactor coolant system, the main coolant pump room is used to arrange the main coolant pump in the reactor coolant system, and the first pipeline valve room is used to arrange the pressurizer in the reactor coolant system; The second layer is provided with a second pipeline valve room, a surge tube room, a first personnel gate, and a storage pool for internal components in the reactor building, and the second pipeline valve room is located above the internal heat exchange water tank and is used to arrange pipelines and valves of a passive core cooling system and a main feed water outlet, the surge tube room and the storage pool for internal components are both located above the first pipeline valve room, the surge tube room is used to arrange the surge tube in the reactor building, and the first personnel gate is provided on the containment shell and is used for personnel to enter and exit the containment shell; The third layer is also provided with a third pipeline valve room and a second personnel gate. The third pipeline valve room is arranged above the first pipeline valve room and is used for arranging the main steam pipeline and water supply pipeline in the reactor building. The second personnel gate is passed through the containment and is used for personnel to enter and exit the containment. An equipment gate is also arranged in the fourth layer. The equipment gate penetrates the containment shell and is used for equipment in the reactor building to enter and exit the containment shell.

7. The reactor building according to claim 6, characterized in that: The second layer is also provided with a fourth pipeline and valve room for arranging pipelines and valves in chemical and volume control systems; The third layer is also provided with a fifth pipeline valve room for arranging heat exchangers in chemical and volume control systems.

8. The reactor building according to claim 6, characterized in that: The containment continuous ventilation system unit includes a heat exchanger and a fan. The heat exchanger in the containment continuous ventilation system unit is a heat transfer tube, which is arranged on the inner wall surface of the containment in the fourth layer. An operating platform is provided on the inner wall surface of the containment in the fourth layer. The operating platform is located below the heat transfer tube and is used to arrange the fan.

9. The method for arranging a reactor building according to claim 6, characterized in that: A stack top cover storage room is provided in the built-in hot water tank and / or the safety water tank, and the stack top cover storage room is located in the fourth layer.

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