Environment-friendly gas insulation inflatable switch cabinet

Abstract

The invention relates to the technical field of switch cabinets, in particular to an environment-friendly gas insulation inflatable switch cabinet which comprises a control cabinet and an inflation box, the lower end of the inflation box is fixedly connected with multiple sets of mounting frames, the lower ends of the mounting frames are fixedly connected with the upper wall of the rear half part of the control cabinet, and the left side and the right side of each mounting frame are fixedly connected with protective covers. An electrical part is installed on the inner side of the inflation box, multiple sets of bus expansion connectors are fixedly connected to the left side and the right side of the upper end of the inflation box, a three-stage heat dissipation assembly is installed in the inflation box, and the three-stage heat dissipation assembly comprises a heat conduction piece, a heat dissipation piece, an environment temperature sensor, a distributed optical fiber temperature measurement sensor, a semiconductor refrigeration piece, a refrigeration outer machine and a refrigeration inner machine. Splicing pieces are installed on the left side and the right side of the control cabinet. The three-stage heat dissipation assembly is matched with the empty space to dissipate heat in the inflation box, the heat dissipation effect in the inflation box is effectively improved, meanwhile, the cooling mode is intelligently selected according to the temperature, the energy consumption of equipment is reduced, and the use safety of the equipment is improved.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, specifically to an environmentally friendly gas-insulated gas-filled switchgear. Background Technology

[0002] Switchgear is an indispensable key device in power systems. Traditional switchgear often uses SF6 gas as the insulating medium, which is widely used due to its excellent insulation and arc-extinguishing properties. However, SF6 is a strong greenhouse gas with a global warming potential (GWP) 23,900 times that of CO2, causing serious harm to the environment. With increasingly stringent environmental protection requirements, the development of environmentally friendly insulating media to replace SF6 has become an urgent need for the industry. In recent years, dry compressed air (D-air) and nitrogen (N2) have been widely used as environmentally friendly gases in gas-filled switchgear due to their advantages such as zero GWP, non-toxicity, and easy availability, thus improving the environmental friendliness of switchgear.

[0003] However, in existing technologies, the heat dissipation performance of insulating gases (such as air, nitrogen, etc.) is not as good as that of SF6 gas. When the rated current increases, the temperature rise problem becomes serious, affecting the stable operation and service life of the equipment. For example, some integrated environmental protection cabinets have a small effective heat dissipation area, which makes it difficult to meet the heat dissipation requirements of large-capacity products. Moreover, the two adjacent sets of spliced ​​cabinets are often fixed with bolts, making the installation process more complicated and the installation and maintenance convenience is low.

[0004] Therefore, it is necessary to invent an environmentally friendly gas-insulated gas-filled switchgear to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an environmentally friendly gas-insulated gas-filled switchgear to solve the problems of low heat dissipation performance of insulating gas in environmentally friendly gas-filled switchgear, especially in integrated cabinet structures, where the effective heat dissipation area is small, making it difficult to meet the heat dissipation requirements of large-capacity products, affecting the stability and service life of the equipment. In addition, adjacent sets of spliced ​​cabinets are mostly fixed with bolts, making the installation process cumbersome and the installation and maintenance inconvenience low.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly gas-insulated inflatable switchgear, comprising a control cabinet and an inflatable box, wherein multiple sets of mounting brackets are fixedly connected to the lower end of the inflatable box, the lower end of the mounting brackets is fixedly connected to the upper wall of the rear half of the control cabinet, protective covers are fixedly connected to both sides of the mounting brackets, electrical components are installed inside the inflatable box, multiple sets of busbar expansion joints are fixedly connected to both sides of the upper end of the inflatable box, a three-stage heat dissipation assembly is installed inside the inflatable box, the three-stage heat dissipation assembly includes a heat-conducting plate, a heat sink, an ambient temperature sensor, a distributed fiber optic temperature sensor, a semiconductor refrigeration chip, an outdoor refrigeration unit, and an indoor refrigeration unit, and splicing components are installed on both sides of the control cabinet.

[0007] By adopting the above technical solution, the mounting bracket elevates the air box to the upper side of the rear half of the control cabinet, so that there is a certain heat dissipation space between the lower end of the air box and the control cabinet. The left and right sides of the elevated layer are protected by a protective cover with mesh. During use, the air box is intelligently cooled by a three-stage heat dissipation component, which improves the heat dissipation effect and reduces energy consumption.

[0008] Optionally, the heat-conducting sheet is fixedly installed on the inner walls of the left and right sides of the air-filled box, and the heat sink is fixed on the lower surface of the air-filled box. The lower ends of the heat-conducting sheets on both sides penetrate the lower wall of the air-filled box and are fixedly connected to the left and right ends of the heat sink.

[0009] By adopting the above technical solution, the heat-conducting sheet is used to conduct the heat inside the air chamber to the surface of the heat sink on the lower side, and the heat sink, together with the naturally flowing air, dissipates heat from the inside of the air chamber.

[0010] Optionally, the distributed fiber optic temperature sensor is fixedly installed in key heat-generating parts such as busbar joints, contacts, and busbar conductors in the electrical components. Multiple sets of mounting rods are fixedly connected to the inner wall of the inflation box. The end of the mounting rod away from the inner wall of the inflation box extends to key heat-generating parts such as busbar joints, contacts, and busbar conductors in the electrical components. The semiconductor cooling chip is fixedly installed at the end of the mounting rod away from the inner wall of the inflation box.

[0011] By adopting the above technical solution, the distributed fiber optic temperature sensor is used to monitor the temperature of key heat-generating parts such as busbar joints, contacts, and busbar conductors in electrical components. In conjunction with the pulse operation of the semiconductor cooling chip, it can perform targeted cooling of key parts. At the same time, when the temperature is high, all semiconductor cooling chips can be activated to perform pulse cooling of the entire system.

[0012] Optionally, multiple sets of ambient temperature sensors are fixedly installed on the inner walls of the left and right sides of the inflation box. An installation groove is provided at the upper end of the inflation box. A sealing mounting seat is fixedly connected to the side of the installation groove. The refrigeration indoor unit is fixedly installed inside the installation groove. A sealing connecting seat is fixedly connected to the top of the refrigeration indoor unit. The sealing connecting seat and the sealing mounting seat are fixedly connected by screws.

[0013] Optionally, multiple sets of connecting brackets are fixedly connected to the upper side of the sealing connecting seat, and multiple sets of shock-absorbing pads are fixedly connected to the upper end of the connecting brackets. The outdoor refrigeration unit is fixedly installed on the upper side of the shock-absorbing pads.

[0014] By adopting the above technical solution, the ambient temperature sensor is used to detect the overall ambient temperature inside the inflation box. The indoor and outdoor cooling units work together to force cooling inside the inflation box, improving the safety of equipment operation. Based on the temperature inside the inflation box, different cooling modes are automatically adjusted.

[0015] Optionally, the splicing component includes a linear guide rail and a linear slider. The linear guide rail is fixedly connected to the right side surface of the control cabinet, the linear slider is fixedly connected to the left side surface of the splicing component, and the linear slider is slidably connected to the inner side of the linear guide rail.

[0016] By adopting the above technical solution, the linear guide rail and linear slider in the splicing component are used to quickly splice and fix two sets of switch cabinets, improving the convenience of installation between multiple sets of switch cabinets. Moreover, the front and back sliding installation method makes it easy to replace or maintain the switch cabinet in the middle part after multiple sets of switch cabinets are spliced.

[0017] Optionally, a locking block is fixedly connected to the front end of the linear slider, a positioning groove is provided on the inner side of the locking block, a locking rod is slidably connected inside the positioning groove, the rear side of the upper end of the locking rod is an inclined surface, and a locking groove is provided on the upper surface of the linear guide near the front end.

[0018] By adopting the above technical solution, when the linear slider is fully slid into the inner side of the linear guide rail, the locking rod will automatically engage with the locking groove, locking and fixing the two adjacent cabinets together, thus improving the stability during use.

[0019] Optionally, a support spring is provided inside the positioning groove, with the lower end of the support spring abutting against the inner bottom wall of the positioning groove and the upper end of the support spring abutting against the lower end of the locking rod.

[0020] By adopting the above technical solution, the support spring is used to support the locking rod, so that the locking rod is stably locked inside the locking groove.

[0021] Optionally, the front surface of the locking block is provided with an adjustment groove, and an adjustment block is slidably connected inside the adjustment groove. The rear end of the adjustment block is fixedly connected to the locking rod.

[0022] By adopting the above technical solution, the adjusting block slides up and down inside the adjusting groove, thereby driving the locking rod to slide up and down, which facilitates unlocking between two adjacent cabinets.

[0023] Optionally, a limit block is rotatably connected to the front end of the adjusting block, and a limit plate is fixedly connected to the front end of the locking block at the position on the side of the adjusting groove.

[0024] By adopting the above technical solution, after the adjusting block slides to the lower side, the limiting block is rotated to the side and locked to the lower side of the limiting plate, so that the locking rod can be stably retracted into the positioning groove, which facilitates the simultaneous unlocking of multiple splicing parts.

[0025] The technical effects and advantages provided by the present invention in the above technical solution are as follows: 1. This invention uses a mounting frame to suspend the lower end of the inflation box, allowing air circulation inside. A three-stage heat dissipation system further cools the interior of the inflation box. Under natural conditions, air convection in the suspended layer, combined with heat-conducting and heat-dissipating fins, achieves natural cooling. When a critical part experiences localized temperature rise, the semiconductor cooling chip in that area is activated for localized cooling. When the overall temperature is high, multiple sets of cooling chips and the cooling fan blades in the indoor cooling unit are activated for heat dissipation. When the overall temperature is still high, the cooling system in both the outdoor and indoor cooling units is activated, and the cooling fan blades in the indoor cooling unit blow cold air into the inflation box for forced cooling. The three-stage heat dissipation system effectively improves the heat dissipation effect inside the inflation box. Simultaneously, it intelligently selects the cooling mode based on temperature, reducing equipment energy consumption and improving equipment safety. 2. This invention, by installing splicing components on both sides of the control cabinet, allows for the rapid and precise splicing of two sets of cabinets during the splicing process of adjacent cabinets. The linear slider is inserted into the inner side of the linear guide rail on the side of the adjacent cabinet and slides backward, thereby improving the splicing efficiency of multiple cabinet components. 3. This invention opens a locking groove at the front end of the linear guide rail and fixes a locking block at the front end of the linear slider. After the assembly is completed, the locking rod inside the locking block will automatically engage with the locking groove to lock and fix the two sets of cabinets, improving the ease of installation and facilitating quick unlocking, thus improving the convenience of maintenance and replacement. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall right-side structure of the present invention; Figure 2 This is a schematic diagram of the overall left side structure of the present invention; Figure 3This is a schematic diagram of the overall structure of the air box of the present invention; Figure 4 This is a schematic diagram of the upper structure of the air box of the present invention; Figure 5 This is a schematic diagram of the internal structure of the air box of the present invention; Figure 6 This is a schematic diagram of the indoor and outdoor cooling units of the present invention; Figure 7 This is a schematic diagram of the splicing component structure of the present invention; Figure 8 This is a schematic diagram of the internal structure of the locking block of the present invention.

[0027] Explanation of reference numerals in the attached figures: 1. Control cabinet; 11. Protective cover; 12. Splicing component; 13. Linear guide rail; 131. Locking groove; 14. Linear slider; 15. Locking block; 151. Positioning groove; 152. Locking rod; 153. Support spring; 154. Adjustment groove; 155. Adjustment block; 156. Limit block; 157. Limit plate; 2. Inflation box; 21. Mounting bracket; 22. Mounting groove; 23. Sealed mounting seat; 24. Busbar expansion joint; 25. Electrical components; 26. Heat-conducting sheet; 27. Heat sink; 28. Ambient temperature sensor; 29. ​​Distributed fiber optic temperature sensor; 210. Mounting rod; 211. Semiconductor refrigeration chip; 212. Refrigeration outdoor unit; 213. Refrigeration indoor unit; 214. Sealed connection seat; 215. Connection frame; 216. Vibration damping pad. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] This invention provides, for example Figures 1 to 6 An environmentally friendly gas-insulated inflatable switchgear is shown, comprising a control cabinet 1 and an inflatable box 2. Multiple sets of mounting brackets 21 are fixedly connected to the lower end of the inflatable box 2. The lower ends of the mounting brackets 21 are fixedly connected to the upper wall of the rear half of the control cabinet 1. Protective covers 11 are fixedly connected to both sides of the mounting brackets 21. Electrical components 25 are installed inside the inflatable box 2. Multiple sets of busbar expansion joints 24 are fixedly connected to both sides of the upper end of the inflatable box 2. A three-stage heat dissipation assembly is installed inside the inflatable box 2. The three-stage heat dissipation assembly includes a heat-conducting plate 26, a heat sink 27, an ambient temperature sensor 28, a distributed fiber optic temperature sensor 29, a semiconductor cooling chip 211, an outdoor cooling unit 212, and an indoor cooling unit 213.

[0030] The lower end of the air-filled box 2 is raised by the mounting bracket 21, which increases the contact area between the air-filled box 2 and the air, allowing air convection at the bottom. With the help of the heat-conducting plate 26 and the heat sink 27, the air-filled box can be cooled naturally. At the same time, the distributed fiber optic temperature sensor 29 works with the semiconductor cooling chip 211 to achieve localized cooling. This can effectively reduce the energy consumption of the equipment in the case of local high temperature. The ambient temperature sensor 28, the outdoor cooling unit 212 and the indoor cooling unit 213 work together to achieve global forced cooling, which cools the whole unit and improves the safety of use in extreme high temperature conditions.

[0031] In a preferred embodiment, the heat-conducting sheet 26 is fixedly installed on the inner walls of the left and right sides of the air-filled box 2, and the heat sink 27 is fixed on the lower surface of the air-filled box 2. The lower ends of the heat-conducting sheets 26 on both sides penetrate the lower wall of the air-filled box 2 and are fixedly connected to the left and right ends of the heat sink 27.

[0032] Specifically, the heat-conducting plates 26 on both sides conduct heat from inside the air chamber 2 to the surface of the heat sink 27. The air convection in the lower air gap drives the heat on the surface of the heat sink 27, thereby effectively improving the natural heat dissipation effect of the air chamber 2.

[0033] In a preferred embodiment, the distributed fiber optic temperature sensor 29 is fixedly installed in the electrical components 25 at key heat-generating parts such as busbar connectors, contacts, and busbar conductors. Multiple sets of mounting rods 210 are fixedly connected to the inner wall of the inflation box 2. One end of the mounting rod 210 away from the inner wall of the inflation box 2 extends to the key heat-generating parts such as busbar connectors, contacts, and busbar conductors in the electrical components 25. The semiconductor cooling chip 211 is fixedly installed at the end of the mounting rod 210 away from the inner wall of the inflation box 2.

[0034] Meanwhile, the distributed fiber optic temperature sensor 29 is fixed to key heat-generating parts such as busbar connectors, contacts, and busbar conductors in the electrical component 25 with thermally conductive silicone grease to ensure temperature acquisition accuracy and monitor the temperature of key parts in real time. A semiconductor cooling chip 211 is installed on the side of the key parts. When the temperature of a certain part rises abnormally, the corresponding semiconductor cooling chip 211 can be activated to achieve local cooling. At the same time, when the temperature is high, all semiconductor cooling chips 211 can be activated to perform pulsed cooling on the whole system.

[0035] In a preferred embodiment, multiple sets of ambient temperature sensors 28 are fixedly installed on the inner walls of the left and right sides of the air box 2. An installation groove 22 is provided at the upper end of the air box 2. A sealing mounting seat 23 is fixedly connected to the side of the installation groove 22. The indoor cooling unit 213 is fixedly installed inside the installation groove 22. A sealing connecting seat 214 is fixedly connected to the top of the indoor cooling unit 213. The sealing connecting seat 214 and the sealing mounting seat 23 are fixedly connected by screws. Multiple sets of connecting brackets 215 are fixedly connected to the upper side of the sealing connecting seat 214. Multiple sets of shock-absorbing pads 216 are fixedly connected to the upper end of the connecting brackets 215. The outdoor cooling unit 212 is fixedly installed on the upper side of the shock-absorbing pads 216.

[0036] In addition, the ambient temperature sensor 28 monitors the interior of the inflation box 2 as a whole. When the overall temperature inside the box is too high, the indoor cooling unit 213 and the outdoor cooling unit 212 are started. The outdoor cooling unit 212 and the indoor cooling unit 213 work together through a condenser, evaporator, small compressor, expansion valve and connecting copper pipe to evaporate and expand the refrigerant to achieve cooling. The cooling fan blows cold air into the inflation box 2 to circulate the gas inside the inflation box 2, thereby achieving rapid cooling. However, the energy consumption is relatively high. Therefore, under normal circumstances, natural convection cooling is used. When the local temperature rises, semiconductor cooling chip 211 is used for localized fixed-point cooling to effectively reduce the energy consumption of the equipment.

[0037] Specific control process: First, the distributed fiber optic temperature sensor 29 works in conjunction with the ambient temperature sensor 28 to achieve full coverage monitoring of local hotspots and the overall environment, and transmits the detection information to the central controller (the central controller can preset temperature thresholds, which are divided into three levels: warning threshold T1=45℃, alarm threshold T2=60℃, and emergency threshold T3=75℃).

[0038] Secondly, the central controller determines the current temperature state based on the preset temperature threshold and triggers corresponding control strategies: First, at normal temperature (T≤T1), the system is in standby mode, utilizing air convection to achieve natural heat dissipation and cooling through the cooperation of heat-conducting plate 26, heat sink 27, and the lower overhead layer; Second, at warning temperature (T1<T≤T2), the system enters a local enhancement mode, that is, based on the hot spot location fed back by the distributed fiber optic temperature sensor 29, the corresponding semiconductor cooling chip 211 is activated, using a pulsed operation mode to cool the hot spot area, with a working cycle of "Working 1". The system operates in four modes: 0s - 20s to avoid excessive energy consumption; 3. Alarm temperature (T2 < T ≤ T3): The system enters a global pulse mode, which activates all semiconductor cooling chips 211 to cool all hot spots. This is also a pulse operation with a working cycle of "15s working - 15s stopping"; 4. Emergency temperature (T3 < T): The system enters a forced cooling mode. In the global pulse mode, the indoor cooling unit 213 and the outdoor cooling unit 212 are activated to blow cold air into the air-filled box 2, forcibly cooling its interior and circulating the cold air inside to rapidly lower its temperature. Example

[0039] See Figure 1 , Figure 2 , Figure 7 and Figure 8 The control cabinet 1 is equipped with splicing components 12 on the left and right sides. The splicing components 12 include linear guide rails 13 and linear sliders 14. The linear guide rails 13 are fixedly connected to the right side surface of the control cabinet 1, and the linear sliders 14 are fixedly connected to the left side surface of the splicing components 12. The linear sliders 14 are slidably connected to the inner side of the linear guide rails 13. A locking block 15 is fixedly connected to the front end of the linear sliders 14. A positioning groove 151 is opened on the inner side of the locking block 15. A locking rod 152 is slidably connected inside the positioning groove 151. The rear side of the upper end of the locking rod 152 is inclined. A locking groove 131 is opened on the upper surface of the linear guide rails 13 near the front end. A support spring 153 is set inside the positioning groove 151. The lower end of the support spring 153 abuts against the inner bottom wall of the positioning groove 151, and the upper end of the support spring 153 abuts against the lower end of the locking rod 152.

[0040] The splicing component 12 is used to quickly splice two adjacent cabinets, improving the convenience of cabinet installation and maintenance, as well as the stability during use.

[0041] Specifically, during the assembly of control cabinet 1, the linear slider 14 on the left side of the right control cabinet 1 is inserted into the inner side of the linear guide rail 13 on the right side of the left control cabinet 1, and the right control cabinet 1 is pushed backward, causing the linear slider 14 to slide backward inside the linear guide rail 13, thereby quickly assembling and fixing the two sets of control cabinets 1. At the same time, when the right control cabinet 1 is pushed to the last end, the locking rod 152 will automatically engage inside the locking groove 131, locking the linear slider 14 and the linear guide rail 13, thereby locking and fixing the two sets of cabinets, improving the ease of installation.

[0042] After the two sets of cabinets are assembled, the busbar expansion joints 24 at the top of the two adjacent sets of cabinets are connected by using busbar connectors, thereby connecting the electrical components in the two sets of cabinets. The top connection method facilitates the rapid assembly of the cabinets and also makes it easier to remove, replace, and maintain the cabinets in the middle section later.

[0043] As a preferred embodiment, the front surface of the locking block 15 is provided with an adjustment groove 154, and an adjustment block 155 is slidably connected inside the adjustment groove 154. The rear end of the adjustment block 155 is fixedly connected to the locking rod 152, and the front end of the adjustment block 155 is rotatably connected to a limit block 156. A limit plate 157 is fixedly connected to the front end of the locking block 15 at the position on the side of the adjustment groove 154.

[0044] In addition, when the cabinet needs to be disassembled, simply slide the adjusting block 155 downwards, causing the locking rod 152 to slide downwards, retracting the locking rod 152 into the positioning groove 151, and rotating the limiting block 156 to lock it under the limiting plate 157 to temporarily fix the adjusting block 155. After all the locking rods 152 have been retracted into the positioning groove 151, the cabinet can be pulled forward to complete the disassembly and separation.

[0045] The working principle of this invention is as follows: By using the mounting bracket 21 to suspend the lower end of the air box 2, air can circulate inside. A three-stage heat dissipation assembly is used to dissipate heat from the inside of the air box, effectively improving the heat dissipation effect. Simultaneously, the cooling mode is intelligently selected based on temperature, reducing equipment energy consumption and improving equipment safety. Furthermore, by installing splicing components 12 on both sides of the control cabinet 1, during the splicing of adjacent cabinets, the linear slider 14 is engaged with the inner side of the linear guide rail 13 on the side of the adjacent cabinet and slides backward, enabling rapid and precise splicing of the two cabinets. The locking rod 152 and locking groove 131 cooperate to automatically lock and fix the two cabinets, improving the splicing efficiency of multiple cabinet components.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. An environmentally friendly gas-insulated gas-filled switchgear, comprising a control cabinet (1) and a gas filling box (2), characterized in that: The lower end of the air-filled box (2) is fixedly connected to multiple sets of mounting brackets (21). The lower end of the mounting brackets (21) is fixedly connected to the upper wall of the rear half of the control cabinet (1). Protective covers (11) are fixedly connected to both the left and right sides of the mounting brackets (21). Electrical components (25) are installed inside the air-filled box (2). Multiple sets of busbar expansion connectors (24) are fixedly connected to both the left and right sides of the upper end of the air-filled box (2). A three-stage heat dissipation assembly is installed inside the air-filled box (2). The three-stage heat dissipation assembly includes a heat-conducting plate (26), a heat sink (27), an ambient temperature sensor (28), a distributed fiber optic temperature sensor (29), a semiconductor refrigeration chip (211), an outdoor refrigeration unit (212), and an indoor refrigeration unit (213). Splicing parts (12) are installed on both the left and right sides of the control cabinet (1).

2. The environmentally friendly gas-insulated gas-filled switchgear according to claim 1, characterized in that: The heat-conducting sheet (26) is fixedly installed on the inner walls of the left and right sides of the air-filled box (2), and the heat sink (27) is fixed on the lower surface of the air-filled box (2). The lower ends of the heat-conducting sheets (26) on both sides penetrate the lower wall of the air-filled box (2) and are fixedly connected to the left and right ends of the heat sink (27).

3. The environmentally friendly gas-insulated gas-filled switchgear according to claim 2, characterized in that: The distributed fiber optic temperature sensor (29) is fixedly installed in the electrical components (25) at key heat-generating parts such as bus joints, contacts, and bus conductors. Multiple sets of mounting rods (210) are fixedly connected to the inner wall of the air-filled box (2). The end of the mounting rod (210) away from the inner wall of the air-filled box (2) extends to the key heat-generating parts such as bus joints, contacts, and bus conductors in the electrical components (25). The semiconductor cooling chip (211) is fixedly installed at the end of the mounting rod (210) away from the inner wall of the air-filled box (2).

4. The environmentally friendly gas-insulated gas-filled switchgear according to claim 3, characterized in that: Multiple sets of ambient temperature sensors (28) are fixedly installed on the inner walls of the left and right sides of the air box (2). An installation groove (22) is opened at the upper end of the air box (2). A sealing mounting seat (23) is fixedly connected to the side of the installation groove (22). The refrigeration unit (213) is fixedly installed inside the installation groove (22). A sealing connecting seat (214) is fixedly connected to the top of the refrigeration unit (213). The sealing connecting seat (214) and the sealing mounting seat (23) are fixedly connected by screws.

5. The environmentally friendly gas-insulated gas-filled switchgear according to claim 4, characterized in that: The upper side of the sealing connector (214) is fixedly connected to multiple sets of connecting brackets (215), and the upper end of the connecting brackets (215) is fixedly connected to multiple sets of shock-absorbing pads (216). The outdoor unit (212) is fixedly installed on the upper side of the shock-absorbing pads (216).

6. The environmentally friendly gas-insulated gas-filled switchgear according to claim 1, characterized in that: The splicing component (12) includes a linear guide rail (13) and a linear slider (14). The linear guide rail (13) is fixedly connected to the right side surface of the control cabinet (1), and the linear slider (14) is fixedly connected to the left side surface of the splicing component (12). The linear slider (14) is slidably connected to the inner side of the linear guide rail (13).

7. The environmentally friendly gas-insulated gas-filled switchgear according to claim 6, characterized in that: The front end of the linear slider (14) is fixedly connected to a locking block (15). The inner side of the locking block (15) is provided with a positioning groove (151). The positioning groove (151) is slidably connected to a locking rod (152). The rear side of the upper end of the locking rod (152) is an inclined surface. The upper surface of the linear guide rail (13) is provided with a locking groove (131) near the front end.

8. The environmentally friendly gas-insulated gas-filled switchgear according to claim 7, characterized in that: The positioning groove (151) is provided with a support spring (153). The lower end of the support spring (153) abuts against the inner bottom wall of the positioning groove (151), and the upper end of the support spring (153) abuts against the lower end of the locking rod (152).

9. The environmentally friendly gas-insulated gas-filled switchgear according to claim 7, characterized in that: The front surface of the locking block (15) is provided with an adjustment groove (154), and an adjustment block (155) is slidably connected inside the adjustment groove (154). The rear end of the adjustment block (155) is fixedly connected to the locking rod (152).

10. An environmentally friendly gas-insulated gas-filled switchgear according to claim 9, characterized in that: The front end of the adjusting block (155) is rotatably connected to the limiting block (156), and the front end of the locking block (15) is fixedly connected to the limiting plate (157) at the position on the side of the adjusting groove (154).

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