A high-voltage switchgear

Abstract

The application belongs to the technical field of switch cabinets, and particularly relates to a high-voltage switch cabinet, which comprises a cabinet body, the inside of the cabinet body is provided with a condensation plate A, the condensation plate A is located at a position close to the top of the cabinet body, the condensation plate A is in an inverted V shape, a drip plate is symmetrically and fixedly installed at the bottom of the condensation plate A, a group of ventilation windows are formed in the two sides of the cabinet body, water collecting hoppers are symmetrically and fixedly installed on the inner walls of the cabinet body, the inner bottom of the water collecting hopper is aligned with the bottom of the ventilation window, and the two water collecting hoppers are respectively located below the two drip plates. Through effective condensation prevention design, the present application avoids the accumulation of condensate water in the cabinet and the dripping of the condensate water on the equipment, and the condensate water may cause problems such as the reduction of insulation performance, short circuit and corrosion of the equipment. The design of the present application greatly reduces the failure risks, improves the operation reliability and stability of the equipment, reduces the frequency of equipment maintenance and replacement, and reduces the operation and maintenance cost.

Description

Technical Field

[0001] This invention belongs to the field of switchgear technology, specifically a high-voltage switchgear. Background Technology

[0002] In power systems, high-voltage switchgear is a key piece of equipment that undertakes the important tasks of controlling, protecting and distributing electrical energy. The stability and reliability of its operation are directly related to the safe and efficient operation of the entire power grid. High-voltage switchgear is commonly used in various substations, distribution rooms and other places to provide stable power support for power users of different sizes.

[0003] However, in actual operation, high-voltage switchgear faces complex and ever-changing environmental factors, among which the problem of internal condensation is particularly prominent and has become a major hidden danger threatening the safe and stable operation of the switchgear. When the hot and humid air inside the cabinet comes into contact with the cooler cabinet surface, the water vapor in the air will reach saturation and condense into liquid water, forming condensation. Condensation will directly corrode the metal components inside the switchgear, seriously affecting the power supply. Secondly, condensation may seep into the insulating components of electrical equipment, such as insulators and insulating bushings. Moisture will reduce the insulation performance of the insulating materials and increase the risk of leakage and short circuit.

[0004] Therefore, the present invention provides a high-voltage switchgear. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: The high-voltage switchgear of the present invention includes a cabinet, and a condenser plate A is provided inside the cabinet. The condenser plate A is located near the top of the cabinet and is in the shape of an inverted "V". Drip plates are symmetrically fixedly installed on the bottom of the condenser plate A. A set of ventilation windows are provided on both sides of the cabinet. Water collection hoppers are symmetrically fixedly installed on the inner wall of the cabinet. The bottom of the inner side of the water collection hopper is aligned with the bottom of the ventilation window. The two water collection hoppers are respectively located below the two drip plates.

[0007] Preferably, condenser plates B are symmetrically arranged on the inner side of the cabinet, with the two condenser plates B located on one side of the two sets of ventilation windows respectively. The condenser plates B are inclined and extend to the inner side of the water collection hopper.

[0008] Preferably, a rotating assembly is provided between each of the two condensing plates B and the cabinet body, the rotating assembly providing the conditions for the condensing plates B to rotate, and a pressing assembly is provided above the condensing plate A, the pressing assembly being used to drive the condensing plate B to rotate.

[0009] Preferably, the condenser plate B is slidably connected to the water collection hopper, and the outer wall of the condenser plate B is evenly provided with water grooves. The rotating assembly includes a hinge seat, which is fixedly installed on the inner wall of the cabinet. The condenser plate B is disposed on the inner side of the hinge seat. A torsion spring shaft is installed between the hinge seat and the condenser plate B. A limit plate is fixedly installed on the outer wall of the hinge seat, and the limit plate abuts against the condenser plate B. A detector is fixedly installed on the inner wall of the cabinet.

[0010] Preferably, the extrusion assembly includes an automatic telescopic rod A, which is fixedly installed on the top of the inner wall of the cabinet. A connecting block is fixedly installed on the output shaft of the automatic telescopic rod A. The bottom of the connecting block is fixedly connected to the top of the condenser plate A. A receiving plate is symmetrically fixedly installed on the top of the condenser plate A. An extrusion block is fixedly installed on one end of each receiving plate. The two extrusion blocks are respectively located above the two condenser plates B.

[0011] Preferably, carbon dioxide containment boxes are symmetrically fixedly installed on the top of the inner wall of the cabinet, and each carbon dioxide containment box has several exhaust holes at its bottom, and both carbon dioxide containment boxes are provided with sealing components at their bottoms.

[0012] Preferably, the sealing assembly includes an outer conduit, which is fixedly installed at the bottom of the carbon dioxide containment tank. A sealing plate is slidably installed on the inner wall of the outer conduit. The sealing plate is hollow and fits snugly against the carbon dioxide containment tank. An injection assembly is provided between the sealing plate and the condensation plate A.

[0013] Preferably, the spray assembly includes an inner conduit, two of which are symmetrically fixedly installed on the inner wall of the condenser plate A, and two sealing plates are respectively fixedly installed at one end of the inner conduit. A nozzle is fixedly installed on the inner wall of each inner conduit.

[0014] Preferably, an automatic telescopic rod B is fixedly installed on the inner wall of both receiving plates, and a push block is fixedly installed on the output shaft of each of the automatic telescopic rods B.

[0015] Preferably, electrical equipment is fixedly installed on the inner wall of the cabinet, a cabinet door is hinged to the outer wall of the cabinet, rain covers are fixedly installed on both sides of the cabinet, uprights are symmetrically fixedly installed on the top of the cabinet, and a top cover is fixedly installed between the uprights.

[0016] The beneficial effects of this invention are as follows: 1. This invention, through its effective anti-condensation design, prevents condensate from accumulating inside the cabinet and dripping onto the equipment. Condensate can cause problems such as decreased insulation performance, short circuits, and corrosion. The design of this invention greatly reduces these risks, improves the reliability and stability of the equipment, reduces the frequency of equipment maintenance and replacement, and lowers operating costs.

[0017] 2. When external air enters the cabinet through the ventilation window, it must pass through the surface of the condenser plate B. If the air contains water vapor, the condenser plate B will take advantage of its surface temperature being lower than the air dew point temperature to quickly liquefy the water vapor into condensate, which will then be discharged outside the cabinet through the ventilation window. This greatly reduces the amount of water vapor entering the cabinet from the source and effectively prevents moisture from accumulating inside the cabinet.

[0018] 3. During daily operation, the condenser plate B plays a moisture-proof role, reducing the amount of water vapor entering the cabinet and ensuring the normal operation of the equipment. In the event of a fire, it can quickly transform into a fireproof component to block ventilation windows. This integrated design saves cabinet space and reduces the manufacturing and maintenance costs of the equipment. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the cabinet structure of the present invention; Figure 3 This is a schematic diagram of the cabinet structure from another perspective of the present invention; Figure 4 This is a schematic diagram of the water collection hopper structure of the present invention; Figure 5 This is a schematic diagram of the structure of the condenser plate at point A of the present invention; Figure 6 This is a schematic diagram of the structure of the condenser plate at point B in this invention; Figure 7 This is a cross-sectional view of the condenser plate A structure of the present invention; Figure 8 This is a cross-sectional view of the carbon dioxide containment tank of the present invention.

[0021] In the diagram: 1. Cabinet; 2. Condensation plate A; 3. Drip plate; 4. Ventilation window; 5. Water collection basin; 6. Condensation plate B; 601. Water channel; 7. Hinge seat; 8. Torsion spring shaft; 9. Limit plate; 10. Detector; 11. Automatic telescopic rod A; 12. Connecting block; 13. Support plate; 14. Extrusion block; 16. Carbon dioxide container; 17. Exhaust vent; 18. External duct; 19. Sealing plate; 20. Internal duct; 21. Nozzle; 22. Automatic telescopic rod B; 23. Push block; 24. Electrical equipment; 25. Cabinet door; 26. Rain cover; 27. Vertical panel; 28. Top cover. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 5As shown in the embodiment of the present invention, a high-voltage switchgear includes a cabinet 1. A condenser plate A2 is installed inside the cabinet 1, located near the top of the cabinet 1. The condenser plate A2 is in an inverted "V" shape. Drip plates 3 are symmetrically fixed to the bottom of the condenser plate A2. A set of ventilation windows 4 are provided on both sides of the cabinet 1. Water collection hoppers 5 are symmetrically fixed to the inner wall of the cabinet 1, with the bottom of the inner side of the water collection hoppers 5 aligned with the bottom of the ventilation windows 4. The two water collection hoppers 5 are respectively located below the two drip plates 3. The condenser plate A2 is located near the top of the cabinet 1. When water vapor inside cabinet 1 rises and comes into contact with condenser plate A2, condenser plate A2 liquefies the water vapor into condensate. Since condenser plate A2 is inverted "V" shape, the condensate slides down its slope to the drip plate 3. The drip plate 3 has multiple protruding drip heads, which allow the condensate to drip quickly into the inside of the water collection basin 5. Because the inside of the water collection basin 5 is aligned with the bottom of the ventilation window 4, the condensate entering the water collection basin 5 can be discharged through the ventilation window 4. In summary, condenser plate A2 is inverted "V" shape. Positioned near the top of cabinet 1, this increases the contact area between water vapor and condenser plate A2. When water vapor rises inside cabinet 1, it can more fully contact condenser plate A2, causing it to quickly condense into condensate, improving condensation efficiency and effectively reducing water vapor accumulation inside the cabinet. Simultaneously, the inclined surface of condenser plate A2 facilitates the directional transfer of condensate. The condensate slides along the inclined surface of condenser plate A2 to drip plate 3, where it drips quickly through the drip head, increasing drainage speed. The bottom of the inner side of the water collection basin 5 is aligned with the bottom of the ventilation window 4, allowing the condensate to drip into the water collection basin 5. Water can flow naturally along the inclined surface of the water collection hopper 5 to the ventilation window 4 and be discharged through the ventilation window 4. No additional drainage power equipment is required. The natural discharge of condensate is achieved by gravity, which is both energy-saving and reliable. The present invention avoids the accumulation of condensate in the cabinet and dripping onto the equipment through an effective anti-condensation design. Condensate may cause problems such as decreased insulation performance, short circuit, and corrosion of the equipment. The design of the present invention greatly reduces these failure risks, improves the operational reliability and stability of the equipment, reduces the frequency of equipment maintenance and replacement, and lowers the operation and maintenance costs.

[0024] like Figures 2 to 4As shown, condenser plates B6 are symmetrically arranged on the inner side of cabinet 1. Two condenser plates B6 are located on one side of each of the two sets of ventilation windows 4. The condenser plates B6 are inclined and extend to the inner side of the water collection basin 5. Condensate on condenser plate A2 drips through drip plate 3 onto condenser plate B6, and then slides down condenser plate B6 to the inner side of the water collection basin 5. Since condenser plates B6 are located on one side of the two sets of ventilation windows 4, when external air enters the inner side of cabinet 1 through ventilation windows 4, the air passes over the surface of condenser plates B6. If the incoming air contains moisture, condenser plates B6 will liquefy the moisture into condensate and discharge it through ventilation windows 4. External air entering cabinet 1 through ventilation windows 4 must pass over the surface of condenser plates B6. This front-mounted moisture-blocking design ensures that the air entering cabinet 1... From the initial stage, the condenser plate B6 plays a crucial role. If the air contains moisture, the condenser plate B6 utilizes its surface temperature, which is lower than the air dew point temperature, to rapidly liquefy the moisture into condensate, which is then discharged outside the cabinet through the ventilation window 4. This significantly reduces the amount of moisture entering the cabinet 1 at the source, effectively preventing the accumulation of moisture inside the cabinet. The condenser plate B6, combined with the condenser plate A2, forms a dual condensation protection system. The condenser plate A2 mainly handles the moisture generated by the operation of the equipment inside the cabinet, while the condenser plate B6 intercepts moisture entering from the outside. The two work together to effectively handle both internal moisture generated during equipment operation and external moisture brought about by changes in the external environment, providing a drier and more stable operating environment for the equipment inside the cabinet and reducing the risk of equipment failure due to excessive humidity.

[0025] like Figures 3 to 6 As shown, rotating components are installed between both condenser plates B6 and cabinet 1, providing the conditions for the condenser plates B6 to rotate. A pressing component is installed above condenser plate A2, which drives condenser plate B6 to rotate. Condenser plate B6 is connected to cabinet 1 via the rotating components, enabling its rotation. When a fire occurs inside cabinet 1, activating the pressing component will press condenser plate B6, causing it to rotate. After rotation, condenser plate B6 will be vertically aligned with the inner wall of cabinet 1, blocking ventilation window 4. This process can be completed quickly. The condenser plate B6 can promptly seal the ventilation window 4, preventing outside air from entering the cabinet. Oxygen is one of the necessary conditions for combustion, and quickly isolating oxygen can effectively suppress the spread of fire, buy valuable time for subsequent firefighting measures, and reduce the degree of harm to equipment and personnel. The condenser plate B6 integrates the moisture-proof and fire-proof functions. In daily operation, the condenser plate B6 plays a moisture-proof role, reducing the amount of water vapor entering the cabinet 1 and ensuring the normal operation of the equipment. In the event of a fire, it can quickly transform into a fire-proof component to seal the ventilation window 4. This integrated design saves cabinet space and reduces the manufacturing and maintenance costs of the equipment.

[0026] like Figure 3 and Figure 6 As shown, the condenser plate B6 is slidably connected to the water collection hopper 5. Water grooves 601 are evenly distributed on the outer wall of the condenser plate B6. The rotating assembly includes a hinge seat 7, which is fixedly installed on the inner wall of the cabinet 1. The condenser plate B6 is located inside the hinge seat 7. A torsion spring shaft 8 is installed between the hinge seat 7 and the condenser plate B6. A limit plate 9 is fixedly installed on the outer wall of the hinge seat 7, abutting against the condenser plate B6. A detector 10 is fixedly installed on the inner wall of the cabinet 1. The condenser plate B6 is connected to the hinge seat 7 via the torsion spring shaft 8. In its natural state, the torsion spring shaft 8 and the limit plate 9 keep the condenser plate B6 tilted. This tilted state facilitates daily condensation drainage and provides initial conditions for rapid rotation in the event of a fire. When the detector 10 detects a fire inside the cabinet 1, the squeezing assembly will squeeze the condenser plate B6. The condenser plate B6 will rotate downwards around the torsion spring shaft 8 until it is in contact with the inner wall of the cabinet 1. At this time, the condenser plate B6 will completely cover the ventilation window 4 from the inside of the cabinet 1. This complete coverage effectively isolates the external oxygen supply. Quickly cutting off the oxygen source can quickly suppress the spread of the fire, buy valuable time to control the fire, and greatly reduce the degree of harm caused by the fire to equipment and personnel. The water trough 601 is staggered with the ventilation window 4 to ensure that the condenser plate B6 can block the ventilation window 4 while allowing the condensate dripping from the drip plate 3 to quickly pass through the condenser plate B6 and be discharged, improving the efficiency of condensation drainage and further enhancing the moisture-proof effect.

[0027] like Figures 3 to 6 As shown, the extrusion assembly includes an automatic telescopic rod A11, which is fixedly installed on the top of the inner wall of the cabinet 1. A connecting block 12 is fixedly installed on the output shaft of the automatic telescopic rod A11. The bottom of the connecting block 12 is fixedly connected to the top of the condensing plate A2. A receiving plate 13 is symmetrically fixedly installed on the top of the condensing plate A2. An extrusion block 14 is fixedly installed on one end of each receiving plate 13, with the two extrusion blocks 14 located above the two condensing plates B6 respectively. In the event of a fire, the automatic telescopic rod A11 extends, thereby driving the condensing plate A2 downwards via the connecting block 12. When the condensing plate A2 moves downwards, it drives the receiving plate 13 downwards, and when the receiving plate 13 moves downwards, it drives the extrusion blocks 14 downwards. As the compression block 14 moves downward, it compresses the condensing plate B6, causing the condensing plate B6 to rotate downward and seal the ventilation window 4. In the early stages of a fire, flames and high-temperature smoke rise and accumulate at the top of the cabinet. The downward movement of the condensing plate A2 compresses the top cavity, limiting the upward spread of flames. At the same time, the downward-moving condensing plate A2 forms a top heat insulation baffle. The low-temperature condensing plate A2 quickly intervenes in the high-temperature area to provide local cooling. The water vapor remaining on the condensing plate A2 vaporizes upon heating, absorbing heat and cooling down, and diluting the local oxygen content. In addition, the downward movement of the condensing plate A2, together with the sealed condensing plates B6 on both sides, forms a semi-enclosed structure, allowing the cabinet 1 to quickly form a sealed, oxygen-deficient environment, resulting in higher oxygen isolation and fire extinguishing efficiency.

[0028] like Figures 2 to 3 and Figure 8 As shown, carbon dioxide containment boxes 16 are symmetrically fixedly installed on the top of the inner wall of cabinet 1. Each carbon dioxide containment box 16 has several exhaust holes 17 at its bottom, and both carbon dioxide containment boxes 16 are equipped with sealing components at their bottoms. The interior of the carbon dioxide containment boxes 16 is filled with carbon dioxide. In the event of a fire, the condenser plate A2 descends, driving the condenser plate B6 to seal the ventilation window 4. Before the ventilation window 4 is sealed, the descent of the condenser plate A2 will open the sealing components, and the carbon dioxide will pass through the exhaust holes 17 and be sprayed out through the opened sealing components to extinguish the fire. This automatic fire extinguishing mechanism does not require manual intervention, can respond promptly in the early stages of a fire, quickly reduce the oxygen concentration inside the cabinet and suppress combustion, further improve fire extinguishing efficiency, and reduce fire losses.

[0029] like Figures 7 to 8 As shown, the sealing assembly includes an outer conduit 18, which is fixedly installed at the bottom of the carbon dioxide containment tank 16. A sealing plate 19 is slidably installed on the inner wall of the outer conduit 18. The sealing plate 19 is hollow and fits snugly against the carbon dioxide containment tank 16. A spray assembly is provided between the sealing plate 19 and the condenser plate A2. In the initial state, the sealing plate 19 fits snugly against the carbon dioxide containment tank 16, and the exhaust port 17 is sealed. The carbon dioxide in the carbon dioxide containment tank 16 remains stable. When a fire occurs and the condenser plate A2 descends, the condenser plate A2 will drive the sealing plate 19 to move downward through the spray assembly. After the sealing plate 19 moves downward, the exhaust port 17 will open, and carbon dioxide will be sprayed out from the exhaust port 17. Since the sealing plate 19 is hollow, the carbon dioxide will pass through the sealing plate 19 and enter the spray assembly, and finally be sprayed out through the spray assembly to extinguish the fire.

[0030] like Figures 7 to 8 As shown, the spray assembly includes an inner conduit 20. Two inner conduits 20 are symmetrically and fixedly installed on the inner wall of the condenser plate A2. Two sealing plates 19 are fixedly installed at one end of the inner conduit 20. A nozzle 21 is fixedly installed on the inner wall of each inner conduit 20. The inner conduit 20 is fixed to the condenser plate A2. When the condenser plate A2 moves down, the inner conduit 20 moves down with it. When the inner conduit 20 moves down, it will drive the sealing plates 19 down, thereby opening the vent 17. Carbon dioxide is discharged through the vent 17 and then passes through the sealing plates 19 into the inner conduit 20. The carbon dioxide in the inner conduit 20 will then be sprayed out through the nozzle 21 to extinguish the fire inside the cabinet 1. The nozzle 21 moves with the condenser plate A2 through the inner conduit 20. By moving the nozzle 21, the carbon dioxide can cover a larger area when sprayed, thereby improving the fire extinguishing effect.

[0031] like Figure 6As shown, automatic telescopic rods B22 are fixedly installed on the inner walls of both receiving plates 13, and push blocks 23 are fixedly installed on the output shafts of the automatic telescopic rods B22. When encountering heavy rain or strong winds, the automatic telescopic rods B22 are activated, and the automatic telescopic rods B22 will extend and drive the push blocks 23 to move. When the push blocks 23 move, they will push the condenser plate B6 to rotate. Through the rotation of the condenser plate B6, the gap of the ventilation window 4 can be reduced or the ventilation window 4 can be closed directly, thereby preventing rainwater or dust impurities from entering the cabinet 1. This effectively avoids the risk of short circuits caused by rainwater to the equipment inside the cabinet and the wear and corrosion of the precision parts of the equipment by dust, providing a reliable protective barrier for the equipment inside the cabinet.

[0032] like Figures 1 to 2 As shown, electrical equipment 24 is fixedly installed on the inner wall of cabinet 1, cabinet door 25 is hinged to the outer wall of cabinet 1, rain covers 26 are fixedly installed on both sides of cabinet 1, upright plates 27 are symmetrically fixedly installed on the top of cabinet 1, and top cover 28 is fixedly installed between the upright plates 27. The electrical equipment 24 is installed inside cabinet 1, and the cabinet door 25 and cabinet 1 cooperate to protect the electrical equipment 24, providing basic safety protection for the electrical equipment 24. The rain covers 26 installed on both sides of cabinet 1 play a primary role in rain protection, and the top cover 28 on the top of cabinet 1 provides reliable top protection for the high-voltage switchgear.

[0033] 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 illustrative of the principles of 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 present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-voltage switchgear, comprising a cabinet (1), characterized in that: The cabinet (1) is equipped with a condenser plate A (2) inside. The condenser plate A (2) is located near the top of the cabinet (1). The condenser plate A (2) is in an inverted "V" shape. Drip plates (3) are symmetrically fixedly installed at the bottom of the condenser plate A (2). A set of ventilation windows (4) are opened on both sides of the cabinet (1). A water collection hopper (5) is symmetrically fixedly installed on the inner wall of the cabinet (1). The bottom of the inner side of the water collection hopper (5) is aligned with the bottom of the ventilation window (4). The two water collection hoppers (5) are located below the two drip plates (3) respectively.

2. A high-voltage switchgear according to claim 1, characterized in that: The cabinet (1) is symmetrically provided with condensing plates B (6) on the inner side. The two condensing plates B (6) are located on one side of the two sets of ventilation windows (4). The condensing plates B (6) are inclined and extend to the inner side of the water collection hopper (5).

3. A high-voltage switchgear according to claim 2, characterized in that: A rotating assembly is provided between each of the two condensing plates B (6) and the cabinet (1). The rotating assembly provides the condensing plate B (6) with the conditions for rotation. A pressing assembly is provided above the condensing plate A (2). The pressing assembly is used to drive the condensing plate B (6) to rotate.

4. A high-voltage switchgear according to claim 3, characterized in that: The condenser plate B (6) is slidably connected to the water collection hopper (5). The outer wall of the condenser plate B (6) is evenly provided with water grooves (601). The rotating assembly includes a hinge seat (7). The hinge seat (7) is fixedly installed on the inner wall of the cabinet (1). The condenser plate B (6) is located on the inner side of the hinge seat (7). A torsion spring shaft (8) is installed between the hinge seat (7) and the condenser plate B (6). A limit plate (9) is fixedly installed on the outer wall of the hinge seat (7). The limit plate (9) abuts against the condenser plate B (6). A detector (10) is fixedly installed on the inner wall of the cabinet (1).

5. A high-voltage switchgear according to claim 3, characterized in that: The extrusion assembly includes an automatic telescopic rod A (11), which is fixedly installed on the top of the inner wall of the cabinet (1). The output shaft of the automatic telescopic rod A (11) is fixedly installed with a connecting block (12). The bottom of the connecting block (12) is fixedly connected to the top of the condensing plate A (2). The top of the condensing plate A (2) is symmetrically fixedly installed with a support plate (13). One end of each support plate (13) is fixedly installed with an extrusion block (14). The two extrusion blocks (14) are located above the two condensing plates B (6) respectively.

6. A high-voltage switchgear according to claim 1, characterized in that: The top of the inner wall of the cabinet (1) is symmetrically fixed with carbon dioxide containment boxes (16), and the bottom of each carbon dioxide containment box (16) is provided with several exhaust holes (17). The bottom of each of the two carbon dioxide containment boxes (16) is provided with a sealing component.

7. A high-voltage switchgear according to claim 6, characterized in that: The sealing assembly includes an outer conduit (18), which is fixedly installed at the bottom of the carbon dioxide container (16). A sealing plate (19) is slidably installed on the inner wall of the outer conduit (18). The sealing plate (19) is hollow and fits snugly against the carbon dioxide container (16). An injection assembly is provided between the sealing plate (19) and the condenser plate A (2).

8. A high-voltage switchgear according to claim 7, characterized in that: The spray assembly includes an inner conduit (20), which has two symmetrically fixed installations on the inner wall of the condenser plate A (2). The two sealing plates (19) are respectively fixedly installed on one end of the inner conduit (20), and the inner wall of the inner conduit (20) is fixedly installed with a nozzle (21).

9. A high-voltage switchgear according to claim 5, characterized in that: Automatic telescopic rods B (22) are fixedly installed on the inner walls of both receiving plates (13), and push blocks (23) are fixedly installed on the output shafts of the automatic telescopic rods B (22).

10. A high-voltage switchgear according to claim 1, characterized in that: Electrical equipment (24) is fixedly installed on the inner wall of the cabinet (1). Cabinet door (25) is hinged to the outer wall of the cabinet (1). Rain cover (26) is fixedly installed on both sides of the cabinet (1). Vertical plates (27) are symmetrically fixedly installed on the top of the cabinet (1). Top cover (28) is fixedly installed between the vertical plates (27).

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