Nucleation plant equipment room integral equipment module and installation method

Abstract

The invention discloses a nuclear plant equipment room integral equipment module which comprises a framework, various equipment required by an equipment room and various pipelines required by the equipment room, and the various equipment and the various pipelines are prefabricated and installed on the framework to form an integral equipment module serving as a movable installation whole. And the integral equipment module is connected with the inner surface of the equipment room through a framework on the construction site of the equipment room. According to the overall equipment module, an original on-site installation structure is replaced with a modular installation structure, the indoor space and equipment layout are reasonably planned, meanwhile, the number of embedded parts and holes of an equipment room is greatly reduced, the influence of construction of the embedded parts and the holes on the wall faces of the equipment room is effectively reduced, and high-quality, high-efficiency and low-cost design and construction of the equipment room are guaranteed. The invention further provides a modularized installation method for the whole equipment of the equipment room of the nuclear plant.

Description

Technical Field

[0001] The present invention specifically relates to an overall equipment module for an equipment room in a nuclear chemical plant and an installation method thereof. Background Art

[0002] A nuclear fuel reprocessing facility is a facility that includes complex mechanical processing procedures and operates on substances containing high levels of radioactive materials. The equipment room is the most important room in the main process plant, and the layout of each process plant is mainly centered around the equipment room. Therefore, it can be said that the equipment room undertakes the most core functions of the entire sub-item. A large number of room structural forms in the plant adopt the form of equipment rooms. Considering the process flow and the influence of factors such as criticality, there are various types of equipment in the equipment room and relatively diverse layout forms. There are equipment rooms that encompass various equipment pipelines, as well as equipment rooms with a single form of equipment and pipelines. It also has the function of radiation shielding for radioactive substances. Under the requirements of radiation protection, the cross-sectional dimensions of the walls and floors of the equipment room are very large, and the surface also requires stainless steel cladding.

[0003] Currently, most of the equipment in the equipment room is installed through steel platforms or through-beams, and the pipelines and supports are rooted on the side walls of the equipment room, requiring a large number of embedded parts to be reserved on the side walls and with irregular distribution; at the same time, there are a large number of wall-piercing sleeves (straight sleeves and arc-shaped sleeves) on the walls, and there are dense equipment installation and maintenance holes on the top plate. Moreover, in some equipment rooms, there are many through-beams with complex forms, and the steel platforms around the equipment room and the coverage area of the platform supports are relatively large. Combined with a large number of embedded parts and holes, the overall layout space of the existing equipment room is scattered, and the items are complex. In addition, there will be a large number of welding operations and high-altitude operations during the construction of the equipment room, resulting in high construction difficulty and long operation cycles.

[0004] At the same time, due to the characteristics of high safety level, large plant scale, large investment scale, and long construction period in the reprocessing project, the design and construction progress of the reprocessing plant is often more urgent and the implementation complexity is greater. The same problems also exist in nuclear chemical plants with equipment rooms in other radioactive-related projects. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an overall equipment module for an equipment room in a nuclear chemical plant to address the above deficiencies in the prior art. This equipment module replaces the original on-site installation structure with a modular installation structure, reasonably plans the indoor space and equipment layout, and at the same time not only greatly reduces the embedded parts and holes in the equipment room, but also effectively reduces the impact of the construction of the two on the walls of the equipment room, ensuring the high-quality, high-efficiency, and low-cost design and construction of the equipment room. The present invention also provides an overall equipment modular installation method for an equipment room in a nuclear chemical plant.

[0006] The present invention provides an overall equipment module for a nuclearization plant equipment room, which includes a framework, various types of equipment required for the equipment room, and various types of pipelines required for the equipment room. All the various types of equipment and various types of pipelines are prefabricated and installed on the framework to form an overall equipment module as a mobile installation unit. The overall equipment module is connected to the inner surface of the equipment room through the framework at the construction site of the equipment room.

[0007] Further, the framework includes an outer frame body, and the outer frame body has a frame structure consistent with the spatial structure of the equipment room. The interior of the frame structure is divided into multiple layered areas in the vertical direction, and all the various types of equipment are arranged in each layered area according to their categories. The interior of the frame structure also includes multiple sheet-like areas, and each sheet-like area is distributed circumferentially around the outer frame body and is respectively arranged along each outer contour surface of the outer frame body so as to be able to span across each layered area in the vertical direction. All the various types of pipelines are arranged in each sheet-like area.

[0008] Further, all the various types of equipment are respectively an air injection ejector, a liquid material conveying device, a storage tank type device, an air lift bottom section, and a steam injection pump. The air injection ejector, the liquid material conveying device, and the storage tank type device are respectively arranged in the top layered area, the upper layered area, and the lower layered area of the outer frame body, and the air lift bottom section and the steam injection pump are arranged in the bottom layered area of the outer frame body.

[0009] Further, the framework also includes a first equipment support. The first equipment support has a platform-like structure arranged along the horizontal plane, is connected to the outer frame body, and is located in the layered area at the lower part of the outer frame body. The first equipment support includes multiple cross beams, and the cross beams are butted to form a horizontal outer frame consistent with the outer contour structure of the outer frame body. Moreover, the cross beams are butted within the horizontal outer frame to divide the internal area of the horizontal outer frame into grid-like installation positions. The storage tank type device is accommodated in the installation position and is connected to the cross beams surrounding and enclosing the installation position.

[0010] Further, the storage tank type device includes a feeding tank, a receiving tank, and an emptying tank, and the feeding tank, the receiving tank, and the emptying tank are respectively installed in the respective installation positions on the first equipment support.

[0011] Further, the framework also includes a second equipment support. The second equipment support has a plate-like structure arranged along the vertical plane, is connected to the outer frame body along the outer contour surface of the outer frame body, and is located in the layered area at the upper part of the outer frame body. The liquid material conveying devices are divided into multiple groups according to the air lift immersion height requirements. Each group of liquid material conveying devices is distributed circumferentially around the outer frame body and is distributed in layers in the layered area at the upper part of the outer frame body according to the air lift immersion height requirements. Each group of liquid material conveying devices is respectively installed on its own second equipment support and is located on the surface facing the inner side of the outer frame body.

[0012] Furthermore, the liquid conveying equipment includes a constant liquid level pre-storage tank, a gas-liquid separation tank and a sampling intermediate tank. The constant liquid level pre-storage tank and the gas-liquid separation tank with the same required air-lift immersion height are taken as a set of liquid conveying equipment. The constant liquid level pre-storage tank and the gas-liquid separation tank in the same set of liquid conveying equipment are parallel to each other and arranged side by side. The sampling intermediate tank is located below the constant liquid level pre-storage tank and the gas-liquid separation tank and above the storage tank equipment.

[0013] Furthermore, the compressed air ejector, the air-lift bottom section and the steam ejector pump are all connected to the outer frame through pipelines.

[0014] Furthermore, the pipelines that need to penetrate the equipment room among various pipelines are arranged in the same sheet-shaped area.

[0015] Furthermore, the framework further includes pipeline supports. The various pipelines are respectively a process tail gas pipeline, a process liquid pipeline and an instrument pipeline, and are all connected to the outer frame through pipeline supports.

[0016] The present invention also provides a method for modular installation of the overall equipment in the equipment room of a nuclear chemical plant, including the following steps:

[0017] Pre-install various equipment required for the equipment room and various pipelines required for the equipment room on the framework to form an overall equipment module;

[0018] Move the overall equipment module as a whole to the construction site of the equipment room, and connect the inner surface of the equipment room through the framework at the construction site of the equipment room.

[0019] Furthermore, before the step of pre-installing various equipment required for the equipment room and various pipelines required for the equipment room on the framework to form an overall equipment module, the following steps are further included:

[0020] Pre-fabricate the outer frame, the first equipment support, the second equipment support and the pipeline support of the framework;

[0021] Combine the outer frame, the first equipment support, the second equipment support and the pipeline support to obtain the framework;

[0022] The step of moving the overall equipment module as a whole to the construction site of the equipment room and connecting the inner surface of the equipment room through the framework at the construction site of the equipment room specifically includes: connecting several positions on the bottom surface and several positions on the side surface of the framework to the embedded parts on the inner surface of the equipment room.

[0023] Furthermore, the step of pre-installing various equipment required for the equipment room and various pipelines required for the equipment room on the framework to form an overall equipment module specifically includes:

[0024] Arrange various equipment in multiple layered areas divided vertically inside the outer frame of the framework according to categories;

[0025] Arrange various types of pipelines in a plurality of sheet-like areas that surround the circumferential direction of the outer frame and are respectively arranged along the outer contour surfaces of the outer frame.

[0026] Furthermore, arrange various types of equipment in a plurality of layered areas divided vertically inside the frame outer frame according to categories, specifically including: arranging the air ejection injector, liquid delivery equipment, and storage tank equipment in the top layered area, upper layered area, and lower layered area of the outer frame respectively; arranging the air lift bottom section and steam jet pump in the bottom layered area of the outer frame.

[0027] Furthermore, arrange various types of pipelines in a plurality of sheet-like areas that surround the circumferential direction of the outer frame and are respectively arranged along the outer contour surfaces of the outer frame, specifically including: arranging the pipelines that need to penetrate the equipment room in the same sheet-like area on the outer frame.

[0028] The present invention conducts an overall modular design of the equipment and pipelines originally directly installed in the equipment room on-site from the design source, thereby obtaining an overall equipment module for the equipment room of a nuclear plant. Various types of equipment and pipelines required for the equipment room are no longer installed on-site, but are prefabricated and installed on the frame to form an overall equipment module as a mobile installation unit. Then, connect the overall equipment module to the inner surface of the equipment room through the frame at the construction site of the equipment room. It can be seen that the present invention integrates and prefabricates the various equipment and pipelines originally scattered in the equipment room, making the integrity of the equipment and pipeline layout method higher. Compared with the previous method of installing various types of equipment in the equipment room in sequence, it can also more reasonably plan the indoor space and equipment layout during the prefabrication process. Moreover, using the direct connection of the module as a whole to the equipment room instead of the direct connection of equipment pipelines to the equipment room can avoid leaving a large number of embedded parts, sleeves, and holes on the side wall of the equipment room. Exactly because of this, it effectively reduces the adverse effects of such reserved structures on the wall, and also enables the construction in the equipment room to avoid a large number of high-difficulty operations, reducing the operation difficulty, operation cycle, and input cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the equipment layout of the overall equipment module for the equipment room of a nuclear plant in Embodiment 1 of the present invention;

[0030] Figure 2 is a schematic diagram of the pipeline layout of the overall equipment module for the equipment room of a nuclear plant in Embodiment 1 of the present invention;

[0031] Figure 3 is a schematic diagram of the overall equipment module for the equipment room of a nuclear plant in Embodiment 1 of the present invention arranged in the equipment room;

[0032] Figure 4It is another schematic diagram of the overall equipment module arranged in the equipment room of the nucleation plant building in Embodiment 1 of the present invention.

[0033] In the figure: 1. Equipment; 11. Compressed air ejector; 12. Feed liquid conveying equipment; 121. Constant liquid level pre-tank; 122. Gas-liquid separation tank; 123. Sampling intermediate tank; 13. Storage tank type equipment; 131. Feed tank; 132. Receiving tank; 133. Emptying tank; 134. Support ear; 14. Air-lift bottom section; 15. Steam ejector pump; 2. Pipeline; 21. Process tail gas pipeline; 22. Process feed liquid pipeline; 23. Instrument pipeline; 3. Framework; 31. Outer framework; 32. First equipment support; 321. Cross beam; 33. Second equipment support; 4. Maintenance platform. Detailed implementation manners

[0034] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the scope of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0036] In the description of the present invention, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0037] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connection", "arrangement", "installation", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be 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.

[0038] Embodiment 1

[0039] The overall equipment module of the nucleation plant equipment room in this embodiment includes a framework 3, various types of equipment 1 required for the equipment room, and various types of pipelines 2 required for the equipment room. The various types of equipment 1 and various types of pipelines 2 are prefabricated and installed on the framework 3 to form an overall equipment module as a mobile installation unit. The overall equipment module is connected to the inner surface of the equipment room through the framework 3 at the construction site of the equipment room.

[0040] In this embodiment, the equipment 1 and pipelines 2 that were originally directly installed in the equipment room on-site are designed as an overall modular unit from the design source, thus obtaining an overall equipment module for the nucleation plant equipment room. That is, the various equipment 1 and pipelines 2 that were originally scattered in the equipment room are integrated and prefabricated, making the overall layout of the equipment 1 and pipelines 2 more integrated. Compared with the previous method of installing various types of equipment in the equipment room one by one, it is also possible to more reasonably plan the indoor space and equipment layout during the prefabrication process. Moreover, using the direct connection of the module as a whole to the equipment room instead of the direct connection of equipment pipelines to the equipment room can avoid leaving a large number of embedded parts, sleeves, and holes on the side walls of the equipment room. Exactly because of this, it effectively reduces the adverse effects of such reserved structures on the wall surface, and also enables the construction in the equipment room to avoid a large number of high-difficulty operations, reducing the operation difficulty, operation cycle, and input cost.

[0041] In this embodiment, to achieve the purpose of shortening the construction period and improving the project quality, appropriate modular technology is adopted to provide a complete, more reasonable, feasible, safer, more convenient, and more economical overall equipment module solution for the nucleation plant. Make full use of the overall space of the equipment room, reasonably arrange various items such as equipment and pipelines in the equipment room, realize the integrated layout of equipment and the integrated layout of pipelines, reduce the prefabrication and installation cycle of equipment, pipelines and related items in the nucleation plant equipment room, improve the safety during the construction process, and fundamentally improve the safety during its operation, maintenance, and decommissioning. Therefore, it is applicable to the layout of the equipment room in nucleation plants such as reprocessing plants, which have high safety levels, high urgency, and large implementation complexities.

[0042] In this embodiment, as Figure 1 and Figure 2 shown, the framework 3 includes an outer frame body 31. The outer frame body 31 has a frame structure consistent with the spatial structure of the equipment room. The interior of the frame structure is divided into multiple layered areas in the vertical direction. The various types of equipment 1 are arranged in each layered area according to their categories. The interior of the frame structure also includes multiple sheet-like areas. Each sheet-like area is distributed circumferentially around the outer frame body 31 and is respectively arranged along each outer contour surface of the outer frame body 31 to be able to span across each layered area in the vertical direction. The various types of pipelines 2 are arranged in each sheet-like area.

[0043] In this embodiment, the indoor space structure of the equipment is a cubic structure, and the outer frame 31 correspondingly presents a cubic frame structure, including at least four columns corresponding to the four vertical edges of the cubic structure, and four top beams horizontally connecting the columns at the top. Therefore, the outer contour surface of the outer frame 31 in this embodiment is the vertical plane between adjacent columns, and the horizontal cross-section of the overall outer contour is in the shape of a "square".

[0044] As Figures 1 to 4 shown, the framework 3, as the overall equipment module outer envelope structure, is used to support various items inside the module and is made of section steel, so it can also be called the steel framework 3. The section steel specifications (cross-sectional length, width, and their thicknesses, in mm, and the section steel is square steel) of the main structure columns, top beams, and cross beams 321 of the steel framework 3 are recommended to adopt the following types: 400×600×18×20, 500×500×25×25, 300×350×12×12, 150×150×10×10, 350×350×12×12, 300×300×12×12. The entire steel framework 3 is rooted to the equipment room floor and the side wall of the equipment room through the section steel at the bottom and on the side, greatly reducing the number of embedded parts for the equipment and various pipelines to take root.

[0045] The overall equipment module is placed on the equipment room floor through the framework 3. When each equipment 1 is distributed at the required height, since it is installed inside the framework 3, the gravity of the equipment 1 can be transmitted to the equipment room through the framework 3. Compared with the conventional method of mounting on the wall inside the equipment room, it can make the stress situation more uniform everywhere in the equipment room and improve safety. And each equipment 1 is arranged in the layered areas distributed vertically in the framework 3 according to categories, which can make full use of the vertical space and meet the layout height requirements of each equipment itself. The pipeline 2 is arranged in the sheet-like area, conforming to the slender structural characteristics of the pipeline 2 so that it can be arranged in a relatively small space area. Secondly, the sheet-like area is arranged along the outer contour surface of the outer frame 31, which will not affect the middle space area of the outer frame 31 and avoid separating large areas, so as to be able to arrange equipment 1 that requires a larger space. More importantly, the sheet-like area is arranged along the vertical plane and can span multiple vertically distributed layered areas, thus conforming to the function of the pipeline 2 to connect each equipment 1 that needs to be connected.

[0046] In this embodiment, various equipment 1 are respectively an air injection ejector 11, a liquid conveying equipment 12, a storage tank equipment 13, an air lift bottom section 14, and a steam injection pump 15. The air injection ejector 11, the liquid conveying equipment 12, and the storage tank equipment 13 are respectively arranged in the top layered area, the upper layered area, and the lower layered area of the outer frame 31, and the air lift bottom section 14 and the steam injection pump 15 are arranged in the bottom layered area of the outer frame 31.

[0047] In this embodiment, the liquid conveying device 12 adopts a maintenance-free air lift bottom section 14 and a steam jet pump 15, and the air lift bottom section 14 and the steam jet pump 15 are arranged at the positions of the liquid outlet pipelines below the corresponding storage tank-type devices 13.

[0048] In this embodiment, the framework 3 further includes a first equipment support 32. The first equipment support 32 is in the form of a platform structure arranged along the horizontal plane, connected to the outer frame body 31, and located in the layered area at the lower part of the outer frame body 31. The first equipment support 32 includes a plurality of cross beams 321. The cross beams 321 are butted to form a horizontal outer frame that is consistent with the outer contour structure of the outer frame body 31. In this embodiment, it is a square arranged along the horizontal plane. Four columns are connected through four corner points. And the cross beams 321 are butted within the horizontal outer frame to divide the internal area of the horizontal outer frame into grid-like installation positions. The storage tank-type devices 13 are accommodated in the installation positions and are connected to the cross beams 321 surrounding the installation positions. Specifically, the internal area of the square horizontal outer frame is further divided into small square areas by the butting of the cross beams 321. The cylindrical storage tank-type devices 13 are connected to the cross beams 321 through the support ear 134 structures provided on the outer walls. This structure can not only stably support the equipment circumferentially, but also facilitate the pipes to pass through at the gaps between the square areas and the equipment.

[0049] In this layout structure, through the platform structure formed by enclosing the cross beams 321 in a grid shape, it can not only stably install and connect to the outer frame body 31 from the inside of the outer frame body 31, but also reasonably plan the space in the current layered area to ensure that multiple storage tank-type devices 13 can all be maintained at the same height.

[0050] In this embodiment, the storage tank-type devices 13 include a feeding tank 131, a receiving tank 132, and an emptying tank 133. The feeding tank 131, the receiving tank 132, and the emptying tank 133 are respectively installed in the respective installation positions on the first equipment support 32. According to the critical calculation and the calculation requirements for the required height of the liquid circulation, the feeding tank 131, the receiving tank 132, and the emptying tank 133 are arranged in parallel on the same layer on the first equipment support 32 in the lower layered area, that is, on the bottom platform of the module. This horizontal same-layer arrangement method has the advantages of reducing the complexity of steel structure connection, reducing the construction cost, improving the overall stability, being easier to connect pipes, reducing the length and complexity of the pipes; and the same-layer arrangement makes it easier for personnel to access all storage tanks for operation and maintenance, without going up and down stairs, reducing safety hazards; in addition, the design parameters of the same-type equipment arranged on the same layer are unified, simplifying the engineering construction process, standardizing the layout, which can reduce the module frame size and save the equipment room space. The same-layer arrangement also helps to improve the stability of module transportation.

[0051] In this embodiment, the frame 3 also includes a second equipment support 33. The second equipment support 33 is a plate-like structure arranged along a vertical surface, connected to the outer frame 31 along the outer contour surface of the outer frame 31, and located in the layered area at the upper part of the outer frame 31. The liquid material conveying equipment 12 is divided into multiple groups according to the air lifting immersion height requirements. Each group of liquid material conveying equipment 12 is distributed circumferentially around the outer frame 31, and in the layered area at the upper part of the outer frame 31, it is layered according to the air lifting immersion height requirements. Each group of liquid material conveying equipment 12 is installed on its own second equipment support 33, located on the surface facing the inner side of the outer frame 31. The setting position of the second equipment support 33 can not only ensure the required installation height of the liquid material conveying equipment 12, but also be close to or even overlap the sheet area where the pipeline 2 is located, so that the liquid material conveying equipment 12 can occupy as little central space as possible and can be closely connected with the pipeline 2.

[0052] In this embodiment, the liquid conveying equipment 12 includes a constant liquid level pre-tank 121, a gas-liquid separation tank 122 and a sampling intermediate tank 123. The constant liquid level pre-tank 121 and the gas-liquid separation tank 122 with the same air lifting immersion height requirements are used as a group of liquid conveying equipment 12, and the constant liquid level pre-tank 121 and the gas-liquid separation tank 122 in the same group of liquid conveying equipment 12 are parallel to each other and arranged side by side, which is not only convenient for planning the direction of the pipeline 2, but also can minimize the number of second equipment supports 33. The sampling intermediate tank 123 is located below the constant liquid level pre-tank 121 and the gas-liquid separation tank 122, and above the storage tank type equipment 13.

[0053] In this embodiment, the compressed air ejector 11, the air lifting bottom section 14 and the steam jet pump 15 are all connected to the outer frame 31 through the pipeline 2, that is, the pipeline 2 is used as an "equipment support" for connection, thereby reducing the number of equipment supports.

[0054] In this embodiment, the various types of pipelines 2 that need to pass through the equipment room are arranged in the same sheet area, that is, located on the outer contour surface on the same side of the outer frame 31. Therefore, the holes in the wall of the equipment room can be concentrated on the same side to prevent the pipeline holes from being too dispersed.

[0055] In this embodiment, the frame 3 also includes pipeline supports, and the various types of pipelines 2 are respectively a process tail gas pipeline 21, a process liquid feed pipeline 22, and an instrument pipeline 23, and the process tail gas pipeline 21, the process liquid feed pipeline 22, and the instrument pipeline 23 are all connected to the outer frame 31 by pipeline supports. Since the diameter of the process tail gas pipeline 21 is relatively large, the pipeline support adopts a frame-type bracket, and the process tail gas pipeline 21 is connected to the outer frame 31 through the frame-type bracket, which plays a fixed and limited role. The other types of pipeline supports can all adopt a single cantilever support (i.e., a cantilever structure extending from the outer frame 31) to play a fixed role.

[0056] Generally speaking, this embodiment provides an overall equipment module for the equipment room of a nuclear plant, adopting a modular layout scheme. All items such as the equipment of the process system in the equipment room (including various storage tanks and fluid conveying equipment), various medium process pipelines, related instrument pipelines, and various item supports and maintenance platforms 4 are integrated and assembled in a steel framework with permanent support to form the overall equipment module of the equipment room. It can be said that the modular principle and scheme under the full life cycle chain of design and construction are formed, providing technical guarantee for the high-quality, high-efficiency and low-cost design and construction of the reprocessing plant.

[0057] The equipment of the process system in the equipment room 1 can be roughly divided into two categories: storage tank equipment 13 and fluid conveying equipment. Among them, the storage tank equipment 13 includes a feeding tank 131, a receiving tank 132, and an emptying tank 133. The feeding tank 131, the receiving tank 132, and the emptying tank 133 serve as storage tanks for radioactive liquid feeding and receiving functions, and are placed in the lower layered area of the outer frame 31. Each storage tank equipment 13 is rooted on the surrounding cross beams 321 through lugs 134, and at the same time, the surrounding cross beams 321 are rooted on the module steel framework 3. The recommended distance from the equipment lug 134 to the bottom of the module is 6m.

[0058] The fluid conveying equipment further includes a sampling intermediate tank 123, a gas-liquid separation tank 122, a constant-level pre-tank 121, an air-lift bottom section 14, a compressed air ejector 11, and a steam ejector pump 15. Among them, the sampling intermediate tank 123, the gas-liquid separation tank 122, and the constant-level pre-tank 121 serve as radioactive liquid conveying equipment 12 and are arranged in the upper layered area of the outer frame 31.

[0059] According to the calculation requirements of the air-lift immersion height, the constant-level pre-tank 121 and the gas-liquid separation tank 122 are respectively arranged above various storage tank equipment. The constant-level pre-tanks 121 and the gas-liquid separation tanks 122 in the module are generally arranged in a "mouth" shape around the steel framework 3. The second equipment support 33 is rooted on the outer frame 31. At the same time, the constant-level pre-tanks 121 and the gas-liquid separation tanks 122 with the same immersion height lifting requirements are arranged in the same layer in a concentrated and side-by-side manner to reduce the number of steel beams required for the second equipment support 33. The sampling intermediate tank 123 serves as an intermediate transition equipment for radioactive liquid conveying equipment and is generally arranged in a "mouth" shape around the steel framework. According to the air-lift height requirements, the equipment layout elevation is between the storage tank equipment and the constant-level pre-tank 121 and the gas-liquid separation tank 122. The equipment support of the sampling intermediate tank 123 is rooted on the outer frame 31.

[0060] The air-lift bottom section 14 is arranged at the bottom of the air-liquid lift pipeline of the pipeline 2 (belonging to the process liquid pipeline 22). The air intake port is connected to the compressed air pipeline in the pipeline 2 (belonging to the process liquid pipeline 22), and is used to suck the liquid into the sampling intermediate tank 123 after a negative pressure is formed in the system. The steam jet pump 15 is arranged at the bottom of the entire module and is used to suck the waste liquid collected in the sump in the equipment room. The distance from the nozzle of the liquid suction pipe of the steam jet pump 15 to the ground reference of the sump is recommended to be 20 mm to form a liquid seal for the waste liquid.

[0061] The compressed air ejector 11 has no mechanical moving parts. Compressed air forms a high-speed air flow through the compressed air ejector 11 to provide a vacuum negative pressure environment for lifting the air-liquid. In this embodiment, multiple pressure control ejectors 11 are connected in series and grouped together and arranged at the top of the module.

[0062] The various pipelines 2 in the equipment room are respectively the medium process pipelines and the instrument pipelines 23. The medium process pipelines include the medium and low-level liquid pipelines, kerosene pipelines, compressed air pipelines, steam pipelines, process tail gas pipelines, and circulating cooling water return pipelines. Therefore, the medium process pipelines can also be divided into the process tail gas pipelines 21 and the process liquid pipelines 22.

[0063] Among them, the process tail gas pipeline 21 is arranged on the top of the "mouth"-shaped ring steel frame and is used to collect the exhaust gas of each equipment 1 and the pipeline tail gas. The nominal diameter of the process tail gas pipeline 21 is above DN150. Therefore, the pipeline support is suspended on the steel beam (top beam) of the steel frame at the top of the module by a frame-type support.

[0064] The process liquid pipeline 22 includes the medium and low-level liquid pipelines, kerosene pipelines, compressed air pipelines, steam pipelines, and circulating cooling water return pipelines. According to the process function requirements, various pipelines are arranged around the "mouth"-shaped ring steel frame, and the pipeline supports are all rooted on the external steel frame 3 of the module.

[0065] The instrument pipeline 23 includes the instrument pipelines connected to the equipment 1 in the equipment room for measuring and monitoring parameters such as pressure, liquid level, and flow rate, the instrument pipelines connected to the medium process pipelines for measuring and monitoring parameters such as temperature and pressure, and the instrument pipelines directly used for measuring and monitoring the overall temperature and pressure of the equipment room. To facilitate the connection of the pipeline interfaces for mutual penetration between the equipment rooms in the red zone, the pipeline interfaces for mutual penetration between the equipment rooms are concentrated on one side of the steel frame 3 to prevent the pipeline openings from being too scattered. The instrument pipeline 23 is arranged according to the distribution position of the process professional equipment.

[0066] In this embodiment, according to the inspection, repair and maintenance requirements of various types of equipment 1 and pipelines 2, two layers of maintenance platforms 4 are arranged in the overall equipment module for equipment and personnel inspection and passage. The maintenance platform 4 is set in two layers according to the height of the overall equipment module and the requirements of equipment inspection, repair and maintenance operations. In this embodiment, the first equipment support 32 serves as the lower maintenance platform. The recommended height difference between the upper and lower maintenance platforms 4 is 3 m, and the recommended distance from the bottom of the lowest maintenance platform 4 to the bottom of the overall equipment module is 6 m. From top to bottom of the overall equipment module, straight ladders are arranged between the top of the overall equipment module and the first maintenance platform 4, and between the two maintenance platforms 4 for personnel passage. The maintenance platform 4 is rooted on the external steel frame, and steel grating plates are laid on the supporting steel beams of each layer of the maintenance platform 4.

[0067] In this embodiment, the above-mentioned various types of equipment 1, pipelines 2 and corresponding supports, and steel platform supports are all welded to the external steel frame 3 (i.e., the aforementioned rooting), and the entire steel frame 3 is rooted to the floor and side wall of the equipment room through the bottom and side section steels. The reserved space between the steel frame 3 and the side wall where the arc-shaped sleeves are concentrated and arranged close to the equipment room is at least 500 mm of net space, and at least 400 mm of net space is reserved between the steel frame 3 and other side walls. The gap between the top of the module and the top wall of the equipment room is currently considered to be about 200 mm to 300 mm of net space. The net space facilitates the installation of the module and the connection of pipelines to meet the space operation requirements for on-site construction pipeline butt welding.

[0068] The main components of the overall equipment module in the equipment room are the feeding tank 131, the receiving tank 132, the emptying tank 133, the constant liquid level pre-tank 121, the gas-liquid separation tank 122, the sampling intermediate tank 123, the air-lift bottom section 14, the steam jet pump 15, the compressed air ejector 11, the process tail gas pipeline 21, the process liquid pipeline 22, the instrument pipeline 23, the maintenance platform 4, the pipeline support, the outer frame 31 and each equipment support. During the installation process of the overall equipment module in the equipment room, the lifting points, the center of gravity and the tooling design can be carried out. The transfer path can be introduced through the "open-top method" at the top of the equipment room.

[0069] To sum up, the overall equipment module in this embodiment makes full use of the overall space of the equipment room, improving the rationality of the utilization of the plant space; and the overall module is connected to the wall through the steel frame 3, reducing the installation of a large number of embedded parts, reducing the construction cost, and significantly improving the construction accuracy. A passage and maintenance platform 4 is also set in the module, improving the convenience of inspection, repair and maintenance of the equipment and pipelines in the equipment room; and the equipment, various pipelines and corresponding supports, and steel platforms in the equipment room are integrally arranged using modular design, reducing a large number of welding, scaffolding erection and high-altitude operations in the equipment room, significantly reducing the hoisting frequency, and greatly improving the overall construction safety; it can realize the prefabrication of the overall module under the plant, the on-site assembly, and the advance of the installation and commissioning cycle, effectively reducing the item collision rate, improving the installation efficiency and saving the construction period.

[0070] Example 2

[0071] The overall equipment modular installation method for the equipment room in the nucleation plant of this example includes the following steps:

[0072] Pre - install various types of equipment 1 required for the equipment room and various types of pipelines 2 required for the equipment room on the framework 3 to form an overall equipment module;

[0073] Move the overall equipment module as a whole to the construction site of the equipment room, and connect it to the inner surface of the equipment room through the framework 3 at the construction site of the equipment room. Specifically, when connecting the overall equipment module to the inner surface of the equipment room, embedded parts are set on the inner wall of the equipment room and then connected (which can be called taking root).

[0074] In this example, before pre - installing various types of equipment 1 required for the equipment room and various types of pipelines 2 required for the equipment room on the framework 3 to form an overall equipment module, the following steps are also included:

[0075] Pre - fabricate the outer frame 31 of the framework 3, the first equipment support 32, the second equipment support 33, and the pipeline support;

[0076] Combine the outer frame 31, the first equipment support 32, the second equipment support 33, and the pipeline support to obtain the framework 3; specifically, the cross - beam 321 of the first equipment support 32 is welded to the column of the outer frame 31, and the pipeline support can be connected and welded to the cross - beam 321 between the columns of the outer frame 31, or directly connected to the outer frame 31.

[0077] Move the overall equipment module as a whole to the construction site of the equipment room, and connect it to the inner surface of the equipment room through the framework 3, specifically including: connecting several positions on the bottom surface and several positions on the side surface of the framework 3 to the embedded parts on the inner surface of the equipment room. In this example, the overall framework is in the shape of a square outer frame, so when the overall framework takes root, the main connection positions are the welding of the four bottom legs of the outer frame 31 to the ground embedded parts of the equipment room, and the four side surfaces of the outer frame 31 can all be welded with steel sections and the side - wall embedded parts of the equipment room, which is more integral in structure and stronger in stability.

[0078] In this example, pre - installing various types of equipment 1 required for the equipment room and various types of pipelines 2 required for the equipment room on the framework 3 to form an overall equipment module specifically includes:

[0079] Arrange various types of equipment 1 in multiple layered areas divided vertically inside the outer frame 31 of the framework 3 by category;

[0080] Arrange various types of pipelines 2 in multiple sheet - like areas arranged circumferentially around the outer frame 31 and respectively along the outer contour surfaces of the outer frame 31.

[0081] In this embodiment, various types of equipment 1 are respectively arranged in a plurality of layered areas vertically divided inside the outer frame 31 of the framework 3, specifically including:

[0082] The compressed air ejector 11, the liquid conveying equipment 12, and the storage tank type equipment 13 in the equipment 1 are respectively arranged in the top layered area, the upper layered area, and the lower layered area of the outer frame 31;

[0083] The air lift bottom section 14 and the steam ejector pump 15 in the equipment 1 are arranged in the bottom layered area of the outer frame 31.

[0084] In this embodiment, various types of pipelines 2 are arranged in a plurality of sheet-like areas surrounding the outer frame 31 circumferentially and respectively arranged along the outer contour surfaces of the outer frame 31, specifically including: The pipelines 2 in the pipelines 2 that need to penetrate the equipment room are arranged in the same sheet-like area on the outer frame 31, so that the wall openings are more concentrated.

[0085] The above are only exemplary implementation schemes of the present invention. Those skilled in the art can make various improvements and deformations on the basis of the above embodiments, and these improvements or deformations all fall within the protection scope of the present invention. The above specific description is only for explaining the purpose of the present invention and is not used to limit the present invention. The protection scope of the present invention is defined by the claims and their equivalents.

Claims

1. An integrated equipment module for a nuclear power plant equipment room, characterized in that: It includes a frame (3), various types of equipment required in the equipment room (1) and various types of pipes required in the equipment room (2). Each type of equipment (1) and each type of pipeline (2) are prefabricated and installed on the frame (3) to form an integrated equipment module as a mobile installation entity. The overall equipment module is connected to the inner surface of the equipment room via a frame (3) at the equipment room construction site.

2. The integrated equipment module of the nuclear power plant equipment room according to claim 1 is characterized in that: The frame (3) comprises an outer frame body (31), wherein the outer frame body (31) is a frame structure consistent with the indoor space structure of the equipment. The interior of the frame structure is divided into multiple layered areas along the vertical direction. The various types of equipment (1) are arranged in various layered areas according to their categories. The frame structure further comprises a plurality of sheet-like regions, each of which is distributed around the circumference of the outer frame (31) and is respectively arranged along each outer profile surface of the outer frame (31) so as to be able to bridge each layered region in the vertical direction. Each type of pipeline (2) is arranged in each sheet-shaped area.

3. The integrated equipment module of the nuclear power plant equipment room according to claim 2 is characterized in that: The various types of equipment (1) are respectively compressed air ejectors (11), liquid material conveying equipment (12), storage tank equipment (13), air lifting bottom sections (14) and steam ejector pumps (15). The compressed air ejector (11), liquid material conveying equipment (12) and storage tank equipment (13) are respectively arranged in the top layered area, the upper layered area and the lower layered area of ​​the outer frame (31), and the air lifting bottom section (14) and the steam jet pump (15) are arranged in the bottom layered area of ​​the outer frame (31).

4. The integrated equipment module of the nuclear power plant equipment room according to claim 3 is characterized in that: The frame (3) further comprises a first equipment support (32), which is a platform-like structure arranged along a horizontal plane, connected to the outer frame (31), and located in a layered area at the lower part of the outer frame (31). The first equipment support (32) includes a plurality of crossbeams (321), the crossbeams (321) are connected to form a horizontal outer frame consistent with the outer structure of the outer frame (31), and the crossbeams (321) are connected inside the horizontal outer frame to divide the inner area of ​​the horizontal outer frame into grid-shaped installation positions. The storage tank type equipment (13) is accommodated in the installation position and is connected to the cross beam (321) surrounding the installation position.

5. The integrated equipment module of the nuclear power plant equipment room according to claim 4 is characterized in that: The storage tank type equipment (13) includes a feeding tank (131), a receiving tank (132) and an emptying tank (133). The feed trough (131), the receiving trough (132) and the emptying trough (133) are respectively installed in respective installation positions on the first equipment support (32).

6. The integrated equipment module of the nuclear power plant equipment room according to claim 3 is characterized by: The frame (3) further comprises a second equipment support (33), the second equipment support (33) being a plate-like structure arranged along a vertical surface, connected to the outer frame (31) along an outer profile surface of the outer frame (31), and located in a layered area on the upper part of the outer frame (31). The liquid material conveying equipment (12) is divided into a plurality of groups according to the air lifting immersion height requirement. Each group of liquid material conveying equipment (12) is distributed around the circumference of the outer frame (31) and is distributed in layers in the layered area above the outer frame (31) according to the air lifting immersion height requirement. Each group of liquid material conveying equipment (12) is respectively installed on its own second equipment support (33) and is located on the surface facing the inner side of the outer frame (31).

7. The integrated equipment module of the nuclear power plant equipment room according to claim 6 is characterized in that: The liquid conveying equipment (12) comprises a constant liquid level pre-tank (121), a gas-liquid separation tank (122) and a sampling intermediate tank (123). The constant liquid level pre-tank (121) and the gas-liquid separation tank (122) having the same air lifting immersion height requirement are used as a group of liquid conveying equipment (12), and the constant liquid level pre-tank (121) and the gas-liquid separation tank (122) in the same group of liquid conveying equipment (12) are arranged parallel to each other and side by side. The sampling intermediate tank (123) is located below the constant liquid level pre-tank (121) and the gas-liquid separation tank (122), and above the storage tank type equipment (13).

8. The integrated equipment module of the nuclear power plant equipment room according to claim 3 is characterized by: The compressed air ejector (11), the air lifting base section (14) and the steam ejector pump (15) are all connected to the outer frame (31) via a pipeline (2).

9. The integrated equipment module of the nuclear power plant equipment room according to claim 2 is characterized in that: Among the various types of pipelines (2), the pipelines (2) that need to pass through the equipment room are arranged in the same sheet-shaped area.

10. The integrated equipment module of the nuclear power plant equipment room according to claim 2 is characterized in that: The framework (3) also includes pipeline supports, The various types of pipelines (2) are respectively a process tail gas pipeline (21), a process liquid pipeline (22) and an instrument pipeline (23), and are all connected to the outer frame (31) by pipeline supports.

11. A method for modular installation of integrated equipment in a nuclear power plant equipment room, characterized in that: The following steps are involved: Various types of equipment (1) and various types of pipelines (2) required for the equipment room are prefabricated and installed on the frame (3) to form an integrated equipment module; The overall equipment module is moved as a whole to the equipment room construction site, and connected to the inner surface of the equipment room via a frame (3) at the equipment room construction site.

12. The method for modular installation of the overall equipment in the nuclear power plant equipment room according to claim 11, characterized in that: Before the various types of equipment (1) and various types of pipelines (2) required for the equipment room are prefabricated and installed on the frame (3) to form an integrated equipment module, the following steps are also included: Prefabricate an outer frame (31), a first equipment support (32), a second equipment support (33) and a pipeline support of the framework (3); The outer frame (31), the first equipment support (32), the second equipment support (33) and the pipeline support are combined to obtain a frame (3); The overall equipment module is moved as a whole to the equipment room construction site, and connected to the equipment room surface through the frame (3) at the equipment room construction site, specifically including: Connecting several positions on the bottom surface and several positions on the side surface of the frame (3) to the embedded parts on the inner surface of the equipment room.

13. The method for modular installation of the overall equipment in the nuclear power plant equipment room according to claim 11, characterized in that: The various types of equipment (1) and various types of pipelines (2) required for the equipment room are prefabricated and installed on the frame (3) to form an integrated equipment module, which specifically includes: Arranging various types of equipment (1) according to their types in a plurality of layered areas divided along the vertical direction inside an outer frame (31) of a frame (3); Various types of pipelines (2) are arranged in a plurality of sheet-shaped areas surrounding the circumference of the outer frame (31) and respectively arranged along the outer contour surfaces of the outer frame (31).

14. The method for modular installation of the overall equipment in the nuclear power plant equipment room according to claim 13, characterized in that: The method of arranging the various types of equipment (1) according to their types in a plurality of layered areas divided along the vertical direction inside the outer frame (31) of the frame (3) specifically includes: The compressed air ejector (11), the liquid conveying device (12) and the storage tank type device (13) in the device (1) are respectively arranged in the top layered area, the upper layered area and the lower layered area of ​​the outer frame (31); The air lifting bottom section (14) and the steam jet pump (15) in the device (1) are arranged in the bottom layered area of ​​the outer frame (31).

15. The method for modular installation of the overall equipment in the nuclear power plant equipment room according to claim 13, characterized in that: The various types of pipelines (2) are arranged in a plurality of sheet-like areas surrounding the outer frame (31) in a circumferential direction and respectively arranged along the outer contour surfaces of the outer frame (31), specifically comprising: arranging the pipelines (2) that need to pass through the equipment room in the same sheet-like area on the outer frame (31).

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