Split prefabricated cabin type substation

Abstract

The application relates to a split prefabricated cabin type transformer substation. The prefabricated cabin type transformer substation comprises two or more cabin bodies capable of being continuously spliced, the cabin body is provided with a first assembly side wall and a second assembly side wall in opposite directions, the first assembly side wall is provided with a first assembly window, and the second assembly side wall is provided with a second assembly window; the butt joint piece is provided with one or more line interfaces, the first assembly window and the second assembly window are both provided with the butt joint piece, the butt joint piece in the first assembly window is fixed relative to the first assembly window, and the butt joint piece in the second assembly window reciprocally moves relative to the second assembly window along the splicing direction of the cabin body; wherein, in two adjacent cabin bodies, the first assembly window on the first assembly wall of one cabin body and the second assembly window on the second assembly wall of the other cabin body are opposite, and the butt joint piece in the second assembly window of the other cabin body can be moved to abut against the butt joint piece in the first assembly window of one cabin body, and the line interfaces of the two butt joint pieces are spliced. The application can guarantee the assembly efficiency.

Description

Technical Field

[0001] This application belongs to the field of power equipment technology, specifically relating to a modular prefabricated substation. Background Technology

[0002] Standardized substations are widely used in power grids to meet the power supply needs of urban residential areas, industrial parks, and other urban applications. In related technologies, substation buildings utilize traditional cement and reinforced concrete structures. The advantages of this type of substation are its large space and high reliability; its disadvantages include a large footprint, poor economic efficiency, and long construction period.

[0003] When equipment malfunctions or the power grid needs to be expanded or upgraded, the civil engineering structure must be dismantled and the equipment wiring completely dismantled. This not only results in long inspection and renovation cycles, wide power outage areas, and high operation and maintenance costs, but also significantly reduces the reliability of the power grid. It is difficult to adapt to the rapid commissioning and flexible iteration requirements of scenarios such as new energy power plants, temporary power supply, and compact construction in urban core areas.

[0004] To address the aforementioned issues, prefabricated modular substations have been adopted as a replacement for traditional cement and steel structure substations. These prefabricated modular substations utilize a construction model of factory prefabrication and integration, overall transportation, and on-site hoisting and commissioning, effectively shortening the on-site construction cycle and improving the standardization and efficiency of substation construction.

[0005] In the process of implementing the above technical solution, the applicant discovered at least the following shortcomings in the relevant technology: In related technologies, after the various compartments of the substation are hoisted into place, the relevant lines (including but not limited to high-voltage power line interfaces, bus line interfaces, and ground line interfaces) inside each compartment need to be connected. In related technologies, the relevant lines need to be manually wired and connected, which is cumbersome and affects the assembly efficiency. Summary of the Invention

[0006] Based on the above-mentioned technical problems, this application provides a modular prefabricated substation, which aims to improve to some extent the technical problems caused by the need for manual wiring and connection of related lines, resulting in cumbersome operation and affecting assembly efficiency.

[0007] This application is achieved through the following technical solution: A modular prefabricated substation includes: two or more modular units that can be continuously spliced ​​together; each unit has a first and a second assembly sidewall facing away from each other; the first assembly sidewall has a first assembly window, and the second assembly sidewall has a second assembly window; and a docking component with one or more line interfaces. The docking component is located within both the first and second assembly windows. The docking component within the first assembly window is fixed relative to the first assembly window, and the docking component within the second assembly window reciprocates relative to the second assembly window along the splicing direction of the units. In two adjacent units, the first assembly window on the first assembly wall of one unit and the second assembly window on the second assembly wall of the other unit face each other, and the docking component within the second assembly window of the other unit can move to abut against the docking component within the first assembly window of one unit, thereby splicing the line interfaces of the two docking components.

[0008] In some implementations, the second assembly window has a built-in second assembly frame, and the mating parts move adaptably within the second assembly frame; one or more guide grooves are provided on the bottom inner side of the second assembly frame; the bottom of the mating parts in the second assembly window is provided with rollers, and the rollers and guide grooves are correspondingly arranged, with one or more rollers reciprocating within the corresponding guide grooves.

[0009] In some implementations, one or more guide rails are provided on the top inner side of the second assembly frame; a guide channel is provided on the top of the docking part inside the second assembly window, the guide channel and the guide rail are correspondingly provided, and the guide rail moves back and forth within the corresponding guide channel.

[0010] In some embodiments, the cabin is also connected to a removable door panel that can seal the first or second assembly window from the outside of the cabin.

[0011] In some embodiments, the prefabricated substation further includes a fire extinguishing assembly disposed within the cabin, the fire extinguishing assembly comprising one or more non-pressurized fire extinguishing devices suspended from the top of the cabin.

[0012] In some embodiments, the non-pressurized fire extinguishing device is at least one type of thermal start and electric start.

[0013] In some implementations, the fire extinguishing assembly further includes a delivery pipe and a spray head corresponding to the non-pressurized fire extinguishing device. The output end of the non-pressurized fire extinguishing device is connected to the spray head through the delivery pipe. The spray head is provided with multiple spray channels, and all of the multiple spray channels are connected to the delivery pipe.

[0014] In some embodiments, the spray head includes: a plurality of spray pipes circumferentially spaced around the bottom end of the conveying pipe; nozzles corresponding to the spray pipes, the nozzles being disposed at the ends of the corresponding spray pipes away from the conveying pipe; and valve cores corresponding to the spray pipes, the valve cores being rotatably connected to the corresponding spray pipes.

[0015] In some implementations, the spray head further includes a control component, which is configured one-to-one with the spray pipe. The control component includes a housing, a first upright plate, a second upright plate, a telescopic rod, and a shape memory alloy spring. The housing is connected to the bottom of the spray pipe. The first upright plate is fixedly erected inside the housing. One side of the second upright plate is rotatably connected to the housing via a pivot shaft, which is connected to the valve core. The other side of the second upright plate is connected to the first upright plate via the telescopic rod. The shape memory alloy spring is sleeved on the telescopic rod and located between the first upright plate and the second upright plate.

[0016] In some embodiments, the control element further includes a heat-conducting rod, one end of which is connected to the telescopic rod, and the other end of which extends through the housing and downwards from the housing.

[0017] This application provides a modular prefabricated substation for urban power grid distribution substations. When assembling modules to form a distribution substation, adjacent modules are hoisted and fixed in place. In two adjacent modules, the connecting parts in the second assembly window of one module are fixed, while the connecting parts in the second assembly window of the other module are movable. By controlling the connecting parts in the second assembly window of the other module to move and abut against the connecting parts in the first assembly window of one module, the integrated line interfaces on the two connecting parts can be connected. This is convenient, quick, simple to operate, and ensures assembly efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a modular prefabricated substation according to one or more embodiments of this application is shown; Figure 2 It shows Figure 1 A structural diagram of one of the compartments in the diagram; Figure 3 It shows Figure 2Another structural diagram from another perspective; Figure 4 It shows Figure 2 The diagram shown is a structural schematic of the cabin with the door panels removed. Figure 5 It shows Figure 4 Another structural diagram from another perspective; Figure 6 It shows Figure 4 A schematic diagram of the structure of the docking parts; Figure 7 It shows Figure 5 A schematic diagram of the structure of the docking parts; Figure 8 It shows Figure 1 Internal diagram; Figure 9 A schematic diagram of the structure of the fire extinguishing assembly 300 is shown; Figure 10 A cross-sectional schematic diagram of the spray head is shown.

[0020] Explanation of reference numerals in the attached figures: 100. Cabin; 110. First assembly sidewall; 120. Second assembly sidewall; 130. First assembly window; 130a. First assembly frame; 140. Second assembly window; 140a. Second assembly frame; 141. Guide groove; 142. Guide rail; 150. Door panel; 151. Handle; 200. Connecting component; 200a. First connecting component; 200b. Second connecting component; 210. Line interface; 211. High-voltage power line interface; 212. Busbar line interface; 213. Ground wire line interface; 220. Connecting carrier; 221. Ear plate; 222. Guide channel; 230. Roller; 300. Fire extinguishing assembly; 310. Non-pressurized fire extinguishing device; 311. Heat-sensitive element; 320. Clamp; 330. Delivery pipe; 340. Sprinkler head; 341. Sprinkler pipe; 342. Nozzle; 343. Valve core; 344. Control component; 3441. Housing; 3442. First upright plate; 3443. Second upright plate; 3444. Telescopic rod; 3445. Memory alloy spring; 3446. Heat-conducting rod. Detailed Implementation

[0021] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] Figure 1 This application shows a schematic diagram of the structure of a modular prefabricated substation in one or more embodiments, in conjunction with... Figure 1 The prefabricated modular substation includes a module 100, and there are two or more modules 100. The two or more modules 100 can be continuously spliced ​​together. The number and specifications of modules 100 can be selected as needed, prefabricated in the factory, and then spliced ​​together on the construction site to form a whole substation.

[0023] Figure 2 It shows Figure 1 A structural diagram of one of the compartments. Figure 3 It shows Figure 2 Another structural diagram from the perspective of Figure 4 It shows Figure 2 The diagram shown is a structural schematic of the cabin without the door panels. Figure 5 It shows Figure 4 A structural diagram from another perspective. Combined with induction 2- Figure 5 Each compartment 100 has a first assembly sidewall 110 and a second assembly sidewall 120 facing away from each other. A first assembly window 130 is provided on the first assembly sidewall 110, and a second assembly window 140 is provided on the second assembly sidewall 120. A docking piece 200 is provided in both the first assembly window 130 and the second assembly window 140. The docking piece 200 in the first assembly window 130 is fixed relative to the first assembly window 130, and the docking piece 200 in the second assembly window 140 moves back and forth relative to the second assembly window 140 along the splicing direction of the compartment 100. In two adjacent compartments 100, the first assembly window 130 on the first assembly wall of one compartment 100 and the second assembly window 140 on the second assembly wall of the other compartment 100 are opposite each other. The docking piece 200 in the second assembly window 140 of the other compartment 100 can move and abut against the docking piece 200 in the first assembly window 130 of one compartment 100, and the two docking pieces 200 are spliced ​​together.

[0024] Figure 6 It shows Figure 4 A schematic diagram of the structure of the docking parts in the diagram. Figure 7 It shows Figure 5 A structural diagram of the mating parts. (Combined with...) Figure 6 as well as Figure 7 The docking component 200 is provided with one or more line interfaces 210. The line interfaces 210 of different types on the two docking components 200 are arranged opposite each other. When the two docking components 200 are abutting each other, the line interfaces 210 of the same type on the two docking components 200 are directly connected, which can quickly and conveniently connect the line interfaces 210 used by the two compartments 100, thereby improving docking efficiency.

[0025] The prefabricated modular substation provided in this application allows for convenient and quick assembly of modular substations 100. After adjacent modular substations 100 are hoisted and fixed in place, the connecting parts 200 within the second assembly window 140 of one modular substation 100 are fixed, while those within the second assembly window 140 of the other modular substation 100 are movable. The connecting parts 200 within the second assembly window 140 of the other modular substation are moved to abut against the connecting parts 200 within the first assembly window 130 of one modular substation, and the integrated line interfaces 210 on the two connecting parts 200 are then connected. This method is convenient, quick, simple to operate, and ensures efficient assembly. The specific details of this prefabricated modular substation are further described below with reference to the accompanying drawings.

[0026] Combination Figure 1 In some embodiments, multiple compartments 100 of the prefabricated modular substation of this application are sequentially spliced ​​along the length direction. Correspondingly, the first assembly sidewall 110 and the second assembly sidewall 120 are located on both sides of the length direction of the compartment 100. After the two compartments 100 are hoisted into place, the base of the compartment 100 is fixed so that the adjacent assembly sidewalls of the compartment 100 are aligned and relatively fixed. Correspondingly, the mating parts 200 in the two adjacent assembly sidewalls after assembly are also fixed.

[0027] For ease of description, the fixed mating part 200 is now defined as the first mating part 200a, and the fixed mating part 200 is defined as the second mating part 200b. Figure 6 as well as Figure 7 In some embodiments, the first assembly window 130 has a first assembly frame 130a built in it, and the first docking member 200a is adapted to be fixed in the first assembly frame 130a. The second assembly window 140 has a second assembly frame 140a built in it, and the second docking member 200b is adapted to be movable in the second assembly frame 140a.

[0028] Combination Figure 6 as well as Figure 7 In some embodiments, the docking member 200 includes a docking carrier 220, which is a plate-like structure. The line interfaces 210 on the docking member 200 include, but are not limited to, high-voltage power line interfaces 211, busbar interfaces 212, and ground wire interfaces 213, that is, all line interfaces 210 are integrated on the docking carrier 220. Different types of line interfaces 210 on the two docking members 200 are arranged opposite each other. When the two docking members 200 abut each other, the same type of line interfaces 210 on the two docking members 200 directly connect, which can quickly and conveniently connect the line interfaces 210 used by the two compartments 100, improving docking efficiency.

[0029] Combination Figure 7To facilitate the movement of the second mating component 200b within the second assembly window 140, one or more guide grooves 141 are provided on the inner bottom side of the second assembly frame 140a. Rollers 230 are provided at the bottom of the second mating component 200b within the second assembly window 140, with each roller corresponding to a guide groove 141. One or more rollers 230 reciprocate within their respective guide grooves 141. Through the cooperation of the rollers 230 and the guide grooves 141, the mating component 200 can reciprocate along a predetermined direction, ensuring rapid mating of the mating components 200 within the two assembly windows. Furthermore, the sidewalls along the length of the guide grooves 141 restrict the movement of the mating component 200 when it reaches the outer sidewall of the guide groove 141, signifying that the mating components 200 within the two assembly windows have completed their mating.

[0030] Combination Figure 7 In specific implementation, two rows of guide grooves 141 are provided on the bottom inner side of the second assembly frame 140a, and two rows of rollers 230 are provided on the bottom of the docking member 200 in the second assembly window 140. Each row of rollers 230 moves within the corresponding guide groove 141, and each row of rollers 230 includes two or more rollers 230. Of course, in other embodiments, each guide groove 141 may also be configured with only one roller 230 or more rollers 230, and this application does not limit this. Exemplarily, the bottom of the docking carrier 220 of the movable docking member 200 is connected to ear plates 221 on both sides, and the two sides of the rollers 230 are connected to the docking carrier 220 through the ear plates 221.

[0031] Combination Figure 7 In some embodiments, one or more guide rails 142 are provided on the inner top side of the second assembly frame 140a; and a guide channel 222 is provided on the top of the second docking member 200b inside the second assembly window 140. The guide channel 222 and the guide rail 142 are correspondingly arranged, and the guide rail 142 moves back and forth within the corresponding guide channel 222. The arrangement of the guide rail 142 and the guide rail is also to ensure the direction of movement of the movable second docking member 200b. In a specific implementation, two parallel guide rails 142 are provided on the inner top side of the second assembly frame 140a, and correspondingly, the top of the docking carrier 220 of the second docking member 200b is also provided with a guide channel 222 corresponding to the guide rail 142.

[0032] It should be noted that, under normal circumstances, after the movable docking part 200 abuts against the fixed docking part, the docking of the line interfaces 210 on the two docking parts 200 can keep the movable docking part 200 fixed. To prevent the movable docking part 200 from loosening with the fixed docking part 200, mutually cooperating buckles can be provided on the mating surfaces of the movable docking part 200 and the fixed docking part 200. After the movable docking part 200 is pushed out from the second assembly window 140, the movable docking part 200 and the fixed docking part 200 are further buckled together to ensure the stability of the two docking parts 200 after assembly.

[0033] Combination Figure 2 as well as Figure 3 In some embodiments, the cabin 100 is also connected to a detachable door panel 150, which can seal the first assembly window 130 or the second assembly window 140 from the outside of the cabin 100. During the transportation and hoisting of the cabin 100, materials such as foam can be filled into the guide groove 141 in the second assembly window 140 to fix the docking part 200 inside the second assembly window 140. The door panel 150 can ensure the flatness of the appearance of the cabin 100 and prevent the docking part 200 from being exposed. Before assembling the cabin 100, the door panel 150 is removed from the cabin 100 to expose the docking part 200, and then the cabin 100 is assembled. After the cabin 100 is assembled, the foam filling the guide groove 141 in the second assembly window 140 is removed, and the docking part 200 in the second assembly window 140 is pushed outward. The docking part 200 in the second assembly window 140 is pushed out into the first assembly window 130, and the docking part 200 in the second assembly window 140 is aligned with the docking part 200 in the first assembly window 130. In specific implementation, the door panel 150 can be connected to the outside of the cabin 100 by screws or adhesive. In addition, a handle 151 can be provided on the door panel 150 to facilitate user operation.

[0034] In related technologies, substations house a large number of high-voltage electrical equipment, including oil-immersed transformers, high-voltage switchgear, power cables, and capacitors. This equipment operates under high voltage, high current, and strong electromagnetic conditions for extended periods, and the concentration of flammable materials such as insulating materials, insulating oil, and cable sheaths poses a significant fire hazard.

[0035] Figure 8 It shows Figure 1 Internal diagram, combined with Figure 8 In order to solve the above-mentioned technical problems, the prefabricated substation provided in this application also includes a fire extinguishing component 300, which is installed inside the cabin 100. Figure 9 A structural schematic diagram of the fire extinguishing assembly 300 is shown, combined with... Figure 9The fire extinguishing assembly 300 includes one or more non-pressurized fire extinguishing devices 310, which are suspended from the top of the cabin 100. That is, the non-pressurized fire extinguishing devices 310 used in the fire extinguishing assembly 300 provided in this application are suspended above the electrical equipment inside the cabin 100. When the non-pressurized fire extinguishing device 310 receives an activation signal, the solid-gas conversion agent of the extinguishing medium, such as ultrafine dry powder, inside the non-pressurized fire extinguishing device 310 is activated. The gas inside the device expands rapidly, increasing the internal pressure, which breaks through the sealing membrane. The ultrafine dry powder and other extinguishing medium are sprayed downwards towards the protected area and quickly spread outwards, forming a total flooding extinguishing state. The flames are extinguished under the continuous physical and chemical action of the ultrafine dry powder.

[0036] Combination Figure 9 In specific implementation, four non-pressurized fire extinguishing devices 310 are installed in each compartment 100, and the four non-pressurized fire extinguishing devices 310 are arranged in an array inside the compartment 100. The body of the non-pressurized fire extinguishing device 310 is connected to the inner wall of the top of the compartment 100 by two or more clamps 320, so that the non-pressurized fire extinguishing device 310 is suspended above the electrical equipment in the substation.

[0037] Combination Figure 9 In some embodiments, the non-pressurized fire extinguishing device 310 is thermally activated. The non-pressurized fire extinguishing device 310 is equipped with a thermistor 311, which activates when the temperature inside the chamber 100 rises to a set temperature sensed by the thermistor 311. In other embodiments, the non-pressurized fire extinguishing device 310 can also be electrically activated, meaning it is equipped with a temperature sensor, which activates when the temperature sensor confirms that the temperature inside the chamber 100 has risen to a set temperature.

[0038] Of course, in some other embodiments, the non-pressurized fire extinguishing device 310 may also have thermal start and electric start, which are independent of each other and are triggered first, so as to ensure that if one of them cannot intervene in time when a fire occurs due to temperature rise, thus avoiding safety accidents.

[0039] Combination Figure 9 In some embodiments, the fire extinguishing assembly 300 further includes a delivery pipe 330 and a spray head 340 corresponding to the non-pressurized fire extinguishing device 310. The output end of the non-pressurized fire extinguishing device 310 is connected to the spray head 340 through the delivery pipe 330. The spray head 340 is provided with multiple spray channels, all of which are connected to the delivery pipe 330. This arrangement allows the ultrafine dry powder and other extinguishing media inside the non-pressurized fire extinguishing device 310 to be released through spraying, ensuring that the ultrafine dry powder and other extinguishing media fully cover the electrical equipment in the substation.

[0040] In related technologies, the sealing film of the non-pressurized fire extinguishing device 310 may fail prematurely under harsh environments, aging, quality problems, etc., causing the extinguishing medium such as ultrafine dry powder inside the non-pressurized fire extinguishing device 310 to be slowly released. When the non-pressurized fire extinguishing device 310 needs to be activated, it cannot be activated normally, resulting in irreparable losses.

[0041] Figure 10 A cross-sectional schematic diagram of the spray head is shown, combined with... Figure 10 The spray head 340 of this application includes a spray pipe 341, a nozzle 342, and a valve core 343. Multiple spray pipes 341 are circumferentially spaced around the bottom end of the conveying pipe 330. The nozzles 342 are arranged in a one-to-one correspondence with the spray pipes 341, and the nozzles 342 are arranged at the end of the corresponding spray pipe 341 away from the conveying pipe 330. The valve core 343 is arranged in a one-to-one correspondence with the spray pipes 341, and the valve core 343 is rotatably connected to the corresponding spray pipe 341. Under normal operating conditions, the valve core 343 and the sprinkler pipe 341 are vertically aligned within the sprinkler pipe 341 to cut off the sprinkler pipe 341. Even if the sealing membrane of the non-pressurized fire extinguishing device 310 fails prematurely, the extinguishing medium inside the non-pressurized fire extinguishing device 310 will be blocked by the valve core 343. This prevents the non-pressurized fire extinguishing device 310 from failing to activate properly due to the release of the extinguishing medium, ensuring that the non-pressurized fire extinguishing device 310 can respond promptly in the event of a fire inside the cabin 100, thereby reducing losses. In specific implementation, the valve core 343 has a circular plate structure that matches the inner diameter of the sprinkler pipe 341. A sealing ring can be provided on the circumferential surface of the valve core 343 to ensure the sealing between the valve core 343 and the inner wall of the sprinkler pipe 341.

[0042] Combination Figure 10In some embodiments, the spray head 340 further includes a control component 344, which is configured in a one-to-one correspondence with the spray pipe 341. The control component 344 includes a housing 3441, a first upright plate 3442, a second upright plate 3443, a telescopic rod 3444, and a shape memory alloy spring 3445. The housing 3441 is connected to the bottom of the spray pipe 341. The first upright plate 3442 is fixedly erected inside the housing 3441. One side of the second upright plate 3443 is rotatably connected to the housing 3441 via a rotating shaft, which is connected to the valve core 343. The other side of the second upright plate 3443 is connected to the first upright plate 3442 via the telescopic rod 3444. The shape memory alloy spring 3445 is sleeved on the telescopic rod 3444 and located between the first upright plate 3442 and the second upright plate 3443. When the temperature inside the chamber 100 rises to the set temperature, the shape memory alloy spring 3445 extends to drive the second vertical plate 3443 to rotate with the shaft, which in turn drives the valve core 343 to swing so that the axis of the valve core 343 and the spray pipe 341 has a certain angle, so as to open the spray pipe 341. The vaporized extinguishing medium in the non-pressurized fire extinguishing device 310 is sprayed out through the delivery channel, the spray pipe 341 and the nozzle 342 without affecting the release of the extinguishing medium in the non-pressurized fire extinguishing device 310.

[0043] In some embodiments, the control element 344 further includes a heat-conducting rod 3446, one end of which is connected to the telescopic rod 3444, and the other end of which extends through the housing 3441 and downwards from the housing 3441. The heat-conducting rod 3446 is a heat-conducting element that transfers heat from the chamber 100 to the telescopic rod 3444 and then to the shape memory alloy spring 3445, thereby driving the shape memory alloy spring 3445 to extend, which in turn drives the valve core 343 to swing, thereby opening the spray pipe 341.

[0044] In specific implementation, the housing 3441 of the control component 344 can be integrally formed and connected to the bottom of the spray pipe 341. The telescopic rod 3444 has a first end and a second end that can be extended and retracted. The first end of the telescopic rod 3444 is connected to the first upright plate 3442, and the second end of the telescopic rod 3444 is connected to the second upright plate 3443. The shape memory alloy spring is sleeved on the telescopic rod 3444, and its two ends are connected to the first upright plate 3442 and the second upright plate 3443 respectively. The heat-conducting rod 3446 can be a hollow structure and is L-shaped. One end of the heat-conducting pipe is located inside the housing 3441 and is connected to the first end of the telescopic rod 3444, while the other end of the heat-conducting pipe is located outside the housing 3441 and extends vertically so that the heat inside the cabin 100 can be transferred to the telescopic rod 3444 and the shape memory alloy spring 3445 in a timely manner, so that the valve core 343 can open in a timely manner.

[0045] In this application, the shape memory alloy spring 3445 is in a compressed state at room temperature (i.e., the normal operating temperature of the cabin 100, such as within the range of -25℃ to +40℃) and is installed between the first vertical plate 3442 and the second vertical plate 3443. At this time, the shape memory alloy spring 3445 is in the martensitic phase, and its elastic modulus is low. The thrust applied to the second vertical plate 3443 is small and insufficient to overcome the static friction and sealing force between the valve core 343 and the inner wall of the spray pipe 341. Therefore, the valve core 343 remains in a closed state perpendicular to the axis of the spray pipe 341.

[0046] When the ambient temperature inside the cabin 100 rises to the preset start-up temperature due to a fire or other reasons (e.g., set to 68℃, 93℃, or 141℃, which can be precisely set by adjusting the shape memory alloy composition and heat treatment process according to the temperature resistance requirements of the equipment inside the cabin), the temperature of the shape memory alloy spring 3445 exceeds its austenitic phase transformation end temperature. At this time, the shape memory alloy spring 3445 completely transforms into the austenitic phase, and the shape memory alloy spring 3445 rapidly extends, thereby generating thrust on the second vertical plate 3443. This thrust is transmitted to the valve core 343 via the second vertical plate 3443 and the rotating shaft, driving the valve core 343 to overcome resistance and rotate, opening the spray pipe 341.

[0047] This application uses a shape memory alloy spring 3445 to drive the valve core 343 to rotate, which has a fast response speed and can effectively overcome the slight adhesion that may occur in the valve core 343 due to long-term static storage. In addition, the shape memory alloy spring 3445 has a long mechanical life and stable performance under long-term inactive storage conditions, without aging, brittle fracture or slow deformation. This further ensures that even if the sealing membrane of the non-pressurized fire extinguishing device 310 fails unexpectedly and prematurely, the sprinkler head 340 can still remain closed until it is actually needed to be activated, which greatly improves the overall reliability of the fire protection system.

[0048] Furthermore, the heat-conducting rod 3446 is made of a high thermal conductivity material (such as copper or aluminum). One end of it contacts the telescopic rod 3444 (or directly contacts the shape memory alloy spring 3445), while the other end extends below the housing 3441 and close to the top of the main heat-generating equipment in the substation. The heat-conducting rod 3446 can quickly and directly conduct ambient heat to the shape memory alloy spring 3445, reducing thermal lag in the heat transfer path and ensuring that the shape memory alloy spring 3445 can respond promptly when the temperature rises in the early stages of a fire, thus shortening the start-up delay time.

[0049] In summary, the modular prefabricated substation provided in this application not only enables rapid assembly of the cabin 100, improving assembly efficiency, but also, through the sprinkler heads 340 configured in the non-pressurized fire extinguishing device 310, can improve the coverage range of the sprinkler while solving the technical problem of the non-pressurized fire extinguishing device 310's sealing film failure causing the pressurized fire extinguishing device to malfunction, thereby reducing losses in the event of a fire in the substation and demonstrating excellent practicality.

[0050] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0052] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified. Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A modular, prefabricated substation, characterized in that, The prefabricated substation includes: Two or more compartments that can be continuously spliced ​​together, the compartments having a first assembly sidewall and a second assembly sidewall facing away from each other, the first assembly sidewall being provided with a first assembly window, and the second assembly sidewall being provided with a second assembly window. The docking component is provided with one or more line interfaces. The docking component is provided in both the first assembly window and the second assembly window. The docking component in the first assembly window is fixed relative to the first assembly window, and the docking component in the second assembly window moves back and forth relative to the second assembly window along the splicing direction of the cabin. In one of the two adjacent compartments, the first assembly window on the first assembly wall of one compartment and the second assembly window on the second assembly wall of the other compartment are opposite each other, and the docking component in the second assembly window of the other compartment can move and abut against the docking component in the first assembly window of one compartment, and the line interface of the two docking components is spliced.

2. The prefabricated modular substation according to claim 1, characterized in that, The second assembly window has a built-in second assembly frame, and the mating parts move adaptably within the second assembly frame; The bottom inner side of the second assembly frame is provided with one or more guide grooves; The bottom of the mating parts in the second assembly window is provided with rollers, and the rollers and guide grooves are correspondingly arranged, with one or more rollers reciprocating in the corresponding guide grooves.

3. A modular prefabricated substation according to claim 2, characterized in that, The second assembly frame has one or more guide rails on its top inner side; The top of the docking component in the second assembly window is provided with a guide channel, and the guide channel and the guide rail are correspondingly arranged, with the guide rail moving back and forth within the corresponding guide channel.

4. A modular prefabricated substation according to claim 1, characterized in that, The cabin is also connected to a detachable door panel, which can seal the first or second assembly window from the outside of the cabin.

5. A modular prefabricated substation according to any one of claims 1-4, characterized in that, The prefabricated substation also includes: A fire extinguishing assembly is installed inside the cabin, and the fire extinguishing assembly includes one or more non-pressurized fire extinguishing devices, which are suspended from the top of the cabin.

6. A modular prefabricated substation according to claim 5, characterized in that, The non-pressurized fire extinguishing device is at least one type of thermal start and electric start.

7. A modular prefabricated substation according to claim 5, characterized in that, The fire extinguishing assembly also includes a delivery pipe and a spray head corresponding to the non-pressurized fire extinguishing device. The output end of the non-pressurized fire extinguishing device is connected to the spray head through the delivery pipe. The spray head is provided with multiple spray channels, and all of the multiple spray channels are connected to the delivery pipe.

8. A modular prefabricated substation according to claim 7, characterized in that, The spray head includes: Multiple spray pipes are circumferentially connected to the bottom end of the conveying pipe; Each nozzle is provided in a one-to-one correspondence with a spray pipe, and the nozzle is located at the end of the corresponding spray pipe that is away from the delivery pipe. Each valve core is correspondingly provided with a spray pipe, and the valve core is rotatably connected to the corresponding spray pipe.

9. A modular prefabricated substation according to claim 8, characterized in that, The spray head also includes: The control components are configured one-to-one with the spray pipes. Each control component includes a housing, a first upright plate, a second upright plate, a telescopic rod, and a shape memory alloy spring. The housing is connected to the bottom of the spray pipe. The first upright plate is fixedly erected inside the housing. One side of the second upright plate is rotatably connected to the housing via a rotating shaft, which is connected to the valve core. The other side of the second upright plate is connected to the first upright plate via the telescopic rod. The shape memory alloy spring is sleeved on the telescopic rod and located between the first and second upright plates.

10. A modular prefabricated substation according to claim 9, characterized in that, The control component also includes a heat-conducting rod, one end of which is connected to the telescopic rod, and the other end of which extends through the housing and downwards from the housing.

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