Environment-friendly gas insulated high-voltage cabinet

Abstract

The utility model discloses an environmental protection gas insulation high pressure cabinet, it includes cabinet, insulation air chamber, adjusting mechanism, pressure balance subassembly and filter device. Insulation air chamber fills environmental protection type insulation gas, replaces traditional SF6 gas, reduces environmental harm, adjusting mechanism rotates through the rotation axis and drives the flow vane, and the optimization gas flow evenness, pressure balance subassembly utilizes piston board and elastic element and automatically adjusts the internal pressure, and the filter device of exhaust port adsorbs harmful substance, reduces the pollution. The present application can improve the environmental protection performance, insulation effect and operating stability of equipment significantly, enhance the heat dissipation efficiency and the anti -shock ability simultaneously, have security and maintenance convenience, be suitable for high pressure electrical equipment field.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to an environmentally friendly gas-insulated high-voltage switchgear. Background Technology

[0002] High-voltage switchgear is an important piece of equipment in power systems used for the distribution and control of electrical energy. It is widely used in power plants, substations, and industrial and mining enterprises. Its main function is to protect, monitor, and control electrical equipment. It has various structural types and technical performances according to different usage requirements. High-voltage switchgear is a man-made electrical device mainly used to realize power distribution and line protection. Its design usually needs to meet the requirements of safety, reliability, and environmental protection. Materials and technologies are constantly being optimized with the advancement of science and technology. However, in the use of traditional high-voltage switchgear, the insulating medium is mostly sulfur hexafluoride (SF6) gas, which has a strong greenhouse effect and great environmental hazards, resulting in certain limitations in its environmental performance.

[0003] Chinese patent CN201921580345.6 discloses a gas-insulated high-voltage switchgear, including a cabinet, an insulating gas chamber installed inside the cabinet, and a circuit breaker module disposed in the insulating gas chamber. The insulating gas chamber is filled with insulating gas to achieve insulation protection for electrical equipment. This solution improves the insulation performance of the equipment and reduces the possibility of partial discharge by optimizing the structure of the insulating gas chamber. At the same time, the sealing design of the cabinet further enhances the stability of equipment operation.

[0004] However, in the process of conceiving and implementing the above-mentioned application, the inventors discovered that although the disclosed solution improved the insulation performance by modifying the insulation chamber structure, it still relied on traditional SF6 gas as the insulation medium in actual use, failing to fundamentally solve the problem of insufficient environmental protection. Moreover, the application cost of the related technology is high, which limits its promotion in green and environmentally friendly scenarios. Utility Model Content

[0005] The purpose of this utility model is to provide an environmentally friendly gas-insulated high-voltage switchgear that solves the problems mentioned in the background art.

[0006] This utility model is implemented as follows: an environmentally friendly gas-insulated high-voltage switchgear includes a cabinet, an insulating gas chamber inside the cabinet, a circuit breaker module installed inside the insulating gas chamber, and the insulating gas chamber filled with an environmentally friendly insulating gas; a sealing cover is provided on the top of the insulating gas chamber, the sealing cover and the insulating gas chamber are connected by threads, and an annular sealing gasket is provided on the contact surface to enhance the sealing performance; several fixed supports are provided on the inner wall of the cabinet, and the ends of the fixed supports are fixedly connected to the outer wall of the insulating gas chamber by bolts; the environmentally friendly gas-insulated high-voltage switchgear also includes:

[0007] An adjustment mechanism is located at the bottom of the insulating gas chamber. The adjustment mechanism includes a rotating shaft. The two ends of the rotating shaft are rotatably connected to the two side walls of the insulating gas chamber through bearings. Several guide vanes are evenly distributed in the circumferential direction in the middle of the rotating shaft. The outer edges of the guide vanes maintain a clearance fit with the inner wall of the insulating gas chamber. One end of the rotating shaft passes through the side wall of the insulating gas chamber and extends to the outside, and a handwheel is provided at its end.

[0008] A pressure balancing assembly is located at the top of an insulating gas chamber. The pressure balancing assembly includes a piston chamber with its opening facing downward and communicating with the insulating gas chamber. A piston plate is slidably connected inside the piston chamber. The top of the piston plate is connected to the top wall of the piston chamber through an elastic element. The bottom of the piston plate is provided with several through holes, and a one-way valve is embedded in each through hole.

[0009] The insulating air chamber has an exhaust port on its side wall, and a detachable filter device is provided at the exhaust port. The filter device includes a shell and an adsorbent material filled inside the shell.

[0010] Optionally, the outer wall of the cabinet is provided with a number of heat sinks, the cross-section of the heat sinks is wavy, the inner side of the heat sinks is fixedly connected to the cabinet by welding, and the outer side of the heat sinks is coated with a corrosion-resistant coating.

[0011] Optionally, it also includes a shock-absorbing component disposed between the cabinet and the insulating air chamber. The shock-absorbing component includes two sets of guide grooves symmetrically distributed on both sides of the insulating air chamber. Each set of guide grooves has a slider slidably connected in it. The top of the slider is fixedly connected to the outer wall of the insulating air chamber through a connecting rod. The bottom of the slider is provided with a support spring, and the other end of the support spring is fixedly connected to the bottom wall of the guide groove. The cross-section of the guide groove is T-shaped, and the shape of the slider matches the cross-section of the guide groove.

[0012] Optionally, the adjustment mechanism further includes a limiting device disposed on the rotating shaft. The limiting device includes a fixing sleeve, which is sleeved on the outside of the rotating shaft and fixedly connected to the side wall of the insulating air chamber by screws. The inner wall of the fixing sleeve is provided with a plurality of limiting grooves, and the outer wall of the rotating shaft is provided with protrusions that match the limiting grooves. The protrusions can slide in the limiting grooves but cannot disengage from the limiting grooves.

[0013] Optionally, a pressure relief valve is provided at the top of the piston chamber. The pressure relief valve includes a valve body and a valve core. The valve core is connected to the inner wall of the valve body by a spring. When the pressure in the piston chamber exceeds a set value, the valve core is pushed open to release the pressure.

[0014] Optionally, the surface of the guide vane is coated with a low friction coefficient coating, the root of the guide vane is fixedly connected to the rotating shaft by welding, the number of guide vanes is even, and the included angle between two adjacent guide vanes is equal.

[0015] Optionally, the outer shell of the filter device is made of high-temperature resistant material, and the inner wall of the outer shell is provided with several reinforcing ribs. The cross-section of the reinforcing ribs is triangular, and the two ends of the reinforcing ribs are welded and fixed to the inner wall of the outer shell respectively.

[0016] Optionally, the adsorbent material is a mixture of activated carbon particles and molecular sieves, with a particle size ranging from 0.5 mm to 2 mm, and the filling height of the adsorbent material is two-thirds of the shell height.

[0017] Optionally, a temperature sensor is provided on the inner side of the heat sink. The signal output terminal of the temperature sensor is electrically connected to the controller, and the output terminal of the controller is electrically connected to the alarm device. When the temperature sensor detects that the temperature of the heat sink exceeds a preset value, the controller controls the alarm device to issue an alarm signal.

[0018] Optionally, the shock absorption assembly further includes a buffer pad disposed at the bottom of the guide groove. The buffer pad is made of rubber material, has a thickness of 10mm to 20mm, and has several anti-slip textures on its surface.

[0019] The technical effects of this utility model are as follows: This utility model fundamentally solves the problem of strong greenhouse effect and significant environmental harm caused by the use of SF6 gas in traditional high-voltage switchgear by filling the insulating chamber with environmentally friendly insulating gas instead of traditional SF6 gas. Simultaneously, the design of the adjustment mechanism, using a rotating shaft to drive the guide vanes, makes the gas flow in the insulating chamber more uniform, thereby improving insulation performance. The pressure balancing component, through the cooperation of a piston plate and elastic elements, can automatically adjust when the pressure in the insulating chamber fluctuates, avoiding unstable equipment operation due to excessively high or low pressure. The filter device at the exhaust port uses adsorption materials to adsorb harmful substances in the exhaust gas, further reducing the environmental impact. The wave-shaped design of the heat sink increases the heat dissipation area and improves heat dissipation efficiency, while the corrosion-resistant coating enhances the service life of the heat sink. The shock absorption component uses guide grooves... The combination of sliders and support springs effectively absorbs vibration and impact on the cabinet, improving equipment stability. Furthermore, the limit device design ensures controllable rotation range of the rotating shaft, preventing damage to the guide vanes due to excessive rotation. The pressure relief valve provides additional safety protection for the piston chamber, preventing accidents caused by excessive pressure. The low-friction coefficient coating on the guide vane surface reduces frictional resistance between the vanes and the gas, improving adjustment efficiency. The reinforcing ribs of the filter device enhance the structural strength of the outer shell, preventing deformation due to excessive internal pressure. The reasonable ratio and filling height of the adsorption material ensure filtration effectiveness while controlling costs. The linkage design of the temperature sensor and alarm device enables real-time monitoring of the equipment's operating status, improving equipment safety. The anti-slip texture design of the buffer pad enhances the stability of the shock absorption components, preventing component displacement due to vibration.

[0020] By combining the above-mentioned specific technical means, this utility model not only solves the problem of insufficient environmental protection performance of traditional high-voltage switchgear, but also significantly improves the reliability, safety and maintenance convenience of the equipment, and has high practical value and promotion prospects. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the environmentally friendly gas-insulated high-voltage switchgear of this utility model, showing the layout relationship of the switchgear, insulating gas chamber, regulating mechanism and pressure balancing components.

[0022] Figure 2 This is a partially enlarged view of the adjustment mechanism in this utility model, which focuses on showing the specific structure of the rotating shaft, guide vanes and limiting device.

[0023] Figure 3 This is a cross-sectional structural diagram of the filtration device in this utility model, which shows in detail the arrangement of the outer shell, adsorption material and reinforcing ribs.

[0024] The attached diagram is labeled as follows: 1. Cabinet; 2. Insulating air chamber; 3. Adjustment mechanism; 4. Rotating shaft; 5. Guide vane; 6. Limiting device; 7. Pressure balancing assembly; 8. Piston chamber; 9. Piston plate; 10. Filter device; 11. Outer shell; 12. Adsorbent material; 13. Reinforcing rib; 14. Heat sink; 15. Shock absorption assembly; 16. Guide groove; 17. Slider; 18. Support spring. Detailed Implementation

[0025] This utility model provides an environmentally friendly gas-insulated high-voltage switchgear, the overall structure of which is as follows: Figure 1 As shown, the invention includes core components such as a cabinet 1, an insulating air chamber 2, an adjusting mechanism 3, a pressure balancing assembly 7, and a filter device 10. These components, through a rational layout and connection, achieve the goals of environmental friendliness, stability, and reliability. The specific embodiments of this invention will be described in detail below with reference to the accompanying drawings.

[0026] Cabinet 1 serves as the outer shell of the entire high-voltage switchgear, constructed from high-strength metal. Several fixed supports are installed on the inner wall of Cabinet 1, which are bolted to the outer wall of the insulating chamber 2, thus securely installing the insulating chamber 2 inside Cabinet 1. The insulating chamber 2 is the core component of the high-voltage switchgear, filled with an environmentally friendly insulating gas to replace traditional SF6 gas. A sealing cover is located on the top of the insulating chamber 2, connected to it by threads. An annular sealing gasket is placed on the contact surface to enhance sealing performance, ensuring no gas leakage from the insulating chamber 2. The sealing cover is designed for easy disassembly and reinstallation during subsequent maintenance.

[0027] The adjusting mechanism 3 is located at the bottom of the insulating air chamber 2, and its structure is as follows: Figure 2As shown, the device includes a rotating shaft 4, guide vanes 5, and a limiting device 6. Both ends of the rotating shaft 4 are rotatably connected to the side walls of the insulating gas chamber 2 via bearings. A plurality of guide vanes 5 are evenly distributed circumferentially along the middle of the rotating shaft 4. The number of guide vanes 5 is even, and the included angle between adjacent guide vanes 5 is equal. The roots of the guide vanes 5 are fixedly connected to the rotating shaft 4 by welding, and their surfaces are coated with a low-friction coefficient coating to reduce frictional resistance with the gas. The outer edge of the guide vanes 5 maintains a clearance fit with the inner wall of the insulating gas chamber 2. This design ensures that the guide vanes 5 do not interfere with the inner wall of the insulating gas chamber 2 during rotation, while effectively guiding gas flow. One end of the rotating shaft 4 passes through the side wall of the insulating gas chamber 2 and extends to the outside. A handwheel is provided at its end, allowing the operator to drive the rotating shaft 4 to rotate by turning the handwheel, thereby causing the guide vanes 5 to change the direction and speed of gas flow. The limiting device 6 is sleeved on the outside of the rotating shaft 4 and fixedly connected to the side wall of the insulating air chamber 2 by screws. The inner wall of the limiting device 6 is provided with several limiting grooves, and the outer wall of the rotating shaft 4 is provided with protrusions that match the limiting grooves. The protrusions can slide in the limiting grooves but cannot leave the limiting grooves. This design limits the rotation range of the rotating shaft 4 and avoids damage to the guide vanes 5 due to excessive rotation.

[0028] The pressure balancing assembly 7 is located at the top of the insulating chamber 2 and includes a piston chamber 8, a piston plate 9, and an elastic element. The piston chamber 8 has a downward-facing opening and communicates with the insulating chamber 2. The piston plate 9 is slidably connected inside the piston chamber 8. The top of the piston plate 9 is connected to the top wall of the piston chamber 8 via the elastic element. The bottom of the piston plate 9 has several through holes, each containing a one-way valve. When the pressure inside the insulating chamber 2 increases, gas enters the piston chamber 8 through the through holes, pushing the piston plate 9 upward and compressing the elastic element. When the pressure inside the insulating chamber 2 decreases, the elastic element resets, pushing the piston plate 9 downward, and the one-way valve closes to prevent gas backflow. A pressure relief valve is also located at the top of the piston chamber 8. The pressure relief valve includes a valve body and a valve core. The valve core is connected to the inner wall of the valve body via a spring. When the pressure inside the piston chamber 8 exceeds a set value, the valve core is pushed open to release the pressure, thereby protecting the equipment for safe operation.

[0029] An exhaust port is provided on the side wall of the insulating air chamber 2, and a detachable filter device 10 is provided at the air port. The structure of the filter device 10 is as follows: Figure 3As shown, the system includes a shell 11, an adsorbent material 12, and reinforcing ribs 13. The shell 11 is made of a high-temperature resistant material, and its inner wall is provided with several triangular cross-section reinforcing ribs 13. The two ends of the reinforcing ribs 13 are welded and fixed to the inner wall of the shell 11. This design enhances the structural strength of the shell 11 and prevents deformation due to excessive internal pressure. The adsorbent material 12 is a mixture of activated carbon particles and molecular sieves, with a particle size ranging from 0.5 mm to 2 mm. The filling height of the adsorbent material 12 is two-thirds of the height of the shell 11. This ratio and filling height ensure both filtration effect and cost control. When gas is discharged through the exhaust port, the adsorbent material 12 adsorbs harmful substances in the exhaust gas, thereby reducing the impact on the environment.

[0030] The outer wall of the cabinet 1 is equipped with several heat sinks 14. The cross-section of the heat sinks 14 is wavy, which increases the heat dissipation area and improves heat dissipation efficiency. The inner side of the heat sinks 14 is fixedly connected to the cabinet 1 by welding, and the outer side is coated with a corrosion-resistant coating to enhance service life. A temperature sensor is also installed on the inner side of the heat sinks 14. The signal output terminal of the temperature sensor is electrically connected to the controller, and the output terminal of the controller is electrically connected to the alarm device. When the temperature sensor detects that the temperature of the heat sink 14 exceeds a preset value, the controller controls the alarm device to issue an alarm signal, thereby realizing real-time monitoring of the equipment's operating status.

[0031] The shock-absorbing assembly 15 is disposed between the cabinet 1 and the insulating air chamber 2, and includes two sets of guide grooves 16 symmetrically distributed on both sides of the insulating air chamber 2. Each set of guide grooves 16 has a slider 17 slidably connected within it. The top of the slider 17 is fixedly connected to the outer wall of the insulating air chamber 2 via a connecting rod, and the bottom of the slider 17 is provided with a support spring 18, the other end of which is fixedly connected to the bottom wall of the guide groove 16. The cross-section of the guide groove 16 is T-shaped, and the shape of the slider 17 matches the cross-section of the guide groove 16. This design ensures that the slider 17 slides smoothly within the guide groove 16. The shock-absorbing assembly 15 also includes a buffer pad disposed at the bottom of the guide groove 16. The buffer pad is made of rubber material with a thickness of 10mm to 20mm and has several anti-slip textures on its surface. This design enhances the stability of the shock-absorbing assembly 15 and prevents component displacement due to vibration.

[0032] The working principle of this utility model is as follows: When the high-voltage switchgear is running, the environmentally friendly insulating gas in the insulating chamber 2 achieves uniform flow through the regulating mechanism 3. The operator can drive the rotating shaft 4 to rotate by turning the handwheel, thereby driving the guide vanes 5 to change the gas flow direction and speed, making the gas distribution more uniform. If the pressure in the insulating chamber 2 fluctuates, the piston plate 9 in the pressure balancing assembly 7 will move up and down according to the pressure change, and the elastic element will extend and retract accordingly. The one-way valve controls the gas flow direction to ensure that the pressure in the insulating chamber 2 is always kept within a reasonable range. When the pressure is too high, the pressure relief valve automatically opens to release the excess pressure, thereby protecting the equipment. When the gas is discharged through the exhaust port, the adsorption material 12 in the filter device 10 adsorbs harmful substances in the discharged gas, reducing the impact on the environment. The heat sink 14 improves heat dissipation efficiency through a wave-shaped design. The temperature sensor monitors the temperature of the heat sink 14 in real time and transmits the signal to the controller. When the temperature exceeds the preset value, the controller controls the alarm device to issue an alarm signal. The shock absorption assembly 15 absorbs the vibration and impact on the cabinet 1 through the cooperation of the guide groove 16, the slider 17 and the support spring 18, thereby improving the stability of the equipment. The anti-slip texture of the buffer pad further enhances the stability of the shock absorption assembly 15.

[0033] The synergistic effect of the above-mentioned components not only solves the problem of strong greenhouse effect and great environmental harm caused by the use of SF6 gas in traditional high-voltage switchgear, but also significantly improves the reliability, safety and ease of maintenance of the equipment.

[0034] To enable those skilled in the art to fully understand and implement this utility model, the specific implementation principle of this utility model is further explained below in conjunction with a specific application scenario.

[0035] In the actual operation of a substation, an environmentally friendly gas-insulated high-voltage switchgear is installed in the high-voltage distribution room for distributing and controlling electrical energy. After the equipment is started, the operator first drives the rotating shaft 4 to rotate the guide vanes 5 by rotating the handwheel in the adjusting mechanism 3. Because the guide vanes 5 are evenly distributed circumferentially and maintain a clearance fit with the inner wall of the insulating gas chamber 2, the low-friction coefficient coating on their surface effectively reduces the frictional resistance between them and the gas, thus ensuring smooth gas flow. When the guide vanes 5 change angle, the environmentally friendly insulating gas in the insulating gas chamber 2 begins to be evenly distributed, avoiding situations where the gas concentration in local areas is too high or too low, thereby improving the insulation performance. This process is limited by the engagement of the limiting groove of the limiting device 6 with the protrusion on the rotating shaft 4, preventing damage to the guide vanes 5 due to excessive rotation, thus ensuring the safety and stability of the equipment.

[0036] During equipment operation, the pressure inside the insulating chamber 2 may fluctuate due to temperature changes or external environmental influences. In response, the piston plate 9 in the pressure balancing assembly 7 moves up and down according to the pressure changes. When the pressure inside the insulating chamber 2 increases, gas enters the piston chamber 8 through the through-hole at the bottom of the piston plate 9, pushing the piston plate 9 upwards and compressing the elastic element. When the pressure decreases, the elastic element resets, pushing the piston plate 9 downwards, and the one-way valve closes to prevent gas backflow. This dynamic adjustment mechanism ensures that the pressure inside the insulating chamber 2 remains within a reasonable range. If the pressure continues to rise above the set value, the valve core in the pressure relief valve will open, releasing excess pressure and protecting the equipment for safe operation. This design effectively avoids equipment failure caused by abnormal pressure.

[0037] When the gas in the insulating chamber 2 is discharged through the exhaust port, the filter device 10 adsorbs harmful substances in the discharged gas. The mixture of activated carbon particles and molecular sieves filled inside the outer shell 11 can efficiently adsorb impurities in the gas. The adsorption material 12 with a particle size range of 0.5mm to 2mm, when filled to two-thirds the height of the outer shell 11, ensures both filtration effect and cost control. The reinforcing ribs 13 on the inner wall of the outer shell 11 enhance the structural strength and prevent deformation of the outer shell due to excessive internal pressure. This process significantly reduces the environmental impact of gas emissions, demonstrating the environmental performance of the equipment.

[0038] During prolonged operation, the heat sink 14 on the outer wall of cabinet 1, with its wave-shaped design, increases the heat dissipation area and improves heat dissipation efficiency. A temperature sensor monitors the temperature of the heat sink 14 in real time and transmits the signal to the controller. When the temperature exceeds a preset value, the controller activates an alarm device to issue an alarm signal, alerting operators to take timely action. This design enables real-time monitoring of the equipment's operating status and effectively prevents equipment malfunctions caused by overheating.

[0039] Furthermore, the shock-absorbing assembly 15 absorbs the vibration impact on the cabinet 1 through the coordinated action of the guide groove 16, the slider 17, and the support spring 18. The slider 17 slides smoothly within the T-shaped guide groove 16, the support spring 18 provides cushioning, and the cushioning pad further enhances the stability of the shock-absorbing assembly 15 through its anti-slip texture design. This design prevents component displacement caused by vibration and improves the overall stability of the equipment.

[0040] The above steps demonstrate the specific operating procedures and technical principles of the environmentally friendly gas-insulated high-voltage switchgear in actual operation. Through the synergistic effect of its components, the equipment not only solves the problems of strong greenhouse effect and significant environmental hazards caused by the use of SF6 gas in traditional high-voltage switchgear, but also significantly improves the reliability, safety, and ease of maintenance of the equipment, thereby meeting the needs of substations and other locations for high-performance electrical equipment.

[0041] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An environmentally friendly gas-insulated high-voltage switchgear, characterized in that, The cabinet includes a cabinet (1), an insulating gas chamber (2) inside the cabinet (1), a circuit breaker module installed inside the insulating gas chamber (2), and the insulating gas chamber (2) is filled with environmentally friendly insulating gas; the top of the insulating gas chamber (2) is provided with a sealing cover, which is connected to the insulating gas chamber (2) by threads, and an annular sealing gasket is provided on the contact surface to enhance the sealing performance; several fixed brackets are provided on the inner wall of the cabinet (1), and the ends of the fixed brackets are fixedly connected to the outer wall of the insulating gas chamber (2) by bolts; the environmentally friendly gas insulating high-voltage cabinet also includes: The adjustment mechanism (3) is located at the bottom of the insulating chamber (2). The adjustment mechanism (3) includes a rotating shaft (4). The two ends of the rotating shaft (4) are rotatably connected to the two side walls of the insulating chamber (2) through bearings. Several guide vanes (5) are evenly distributed in the circumferential direction in the middle of the rotating shaft (4). The outer edge of the guide vanes (5) is in clearance fit with the inner wall of the insulating chamber (2). One end of the rotating shaft (4) passes through the side wall of the insulating chamber (2) and extends to the outside. A handwheel is provided at its end. The pressure balancing assembly (7) is located on the top of the insulating air chamber (2). The pressure balancing assembly (7) includes a piston chamber (8). The opening of the piston chamber (8) faces downward and communicates with the insulating air chamber (2). A piston plate (9) is slidably connected inside the piston chamber (8). The top of the piston plate (9) is connected to the top wall of the piston chamber (8) through an elastic element. The bottom of the piston plate (9) is provided with several through holes, and a one-way valve is embedded in the through holes. The insulating air chamber (2) has an exhaust port on its side wall and a detachable filter device (10) at the exhaust port. The filter device (10) includes a shell (11) and an adsorbent material (12) filled in the shell (11).

2. The environmentally friendly gas-insulated high-voltage switchgear as described in claim 1, characterized in that, The outer wall of the cabinet (1) is provided with several heat sinks (14). The cross-section of the heat sinks (14) is wavy. The inner side of the heat sinks (14) is fixedly connected to the cabinet (1) by welding. The outer side of the heat sinks (14) is coated with a corrosion-resistant coating.

3. The environmentally friendly gas-insulated high-voltage switchgear as described in claim 1, characterized in that, It also includes a shock-absorbing component (15) disposed between the cabinet (1) and the insulating air chamber (2). The shock-absorbing component (15) includes two sets of guide grooves (16) symmetrically distributed on both sides of the insulating air chamber (2). Each set of guide grooves (16) is slidably connected to a slider (17). The top of the slider (17) is fixedly connected to the outer wall of the insulating air chamber (2) through a connecting rod. The bottom of the slider (17) is provided with a support spring (18). The other end of the support spring (18) is fixedly connected to the bottom wall of the guide groove (16). The cross-section of the guide groove (16) is T-shaped, and the shape of the slider (17) matches the cross-section of the guide groove (16).

4. The environmentally friendly gas-insulated high-voltage switchgear as described in claim 1, characterized in that, The adjustment mechanism (3) also includes a limiting device (6) set on the rotating shaft (4). The limiting device (6) includes a fixing sleeve, which is fitted on the outside of the rotating shaft (4) and fixedly connected to the side wall of the insulating air chamber (2) by screws. The inner wall of the fixing sleeve is provided with several limiting grooves, and the outer wall of the rotating shaft (4) is provided with protrusions that match the limiting grooves. The protrusions can slide in the limiting grooves but cannot leave the limiting grooves.

5. The environmentally friendly gas-insulated high-voltage switchgear as described in claim 1, characterized in that, The piston chamber (8) is provided with a pressure relief valve at the top. The pressure relief valve includes a valve body and a valve core. The valve core is connected to the inner wall of the valve body by a spring.

6. The environmentally friendly gas-insulated high-voltage switchgear as described in claim 1, characterized in that, The surface of the guide vane (5) is coated with a low friction coefficient coating. The root of the guide vane (5) is fixedly connected to the rotating shaft (4) by welding. The number of guide vanes (5) is even, and the included angle between two adjacent guide vanes (5) is equal.

7. The environmentally friendly gas-insulated high-voltage switchgear as described in claim 1, characterized in that, The outer shell (11) of the filter device (10) is made of high temperature resistant material. Several reinforcing ribs (13) are provided on the inner wall of the outer shell (11). The cross section of the reinforcing ribs (13) is triangular. The two ends of the reinforcing ribs (13) are welded and fixed to the inner wall of the outer shell (11).

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