High-voltage switch cabinet with heat dissipation

Abstract

This invention provides a heat-dissipating high-voltage switchgear, belonging to the technical field of high-voltage switchgear. It includes a cabinet with several symmetrical ventilation holes on its inner walls on both sides. Each ventilation hole contains a filter plate installed through a mating component. A mounting plate and a driving component are slidably mounted inside the cabinet. A transmission component on the mounting plate engages sequentially with the mating components to push the filter plate outwards and tilt it towards the outside of the cabinet. A piston cylinder is fixedly mounted on the inner wall of the cabinet. A piston plate is slidably and sealed vertically inside the piston cylinder, dividing the interior of the piston cylinder into a first piston chamber and a second piston chamber. An air pipe is fixedly mounted at the bottom of the piston plate, and the bottom of the air pipe is fixedly connected to the interior of the mounting plate. Ventilation holes not in cleaning positions are always protected by the filter plates, eliminating the risk of dust entering the cabinet through other ventilation holes and improving the protection of internal electrical components.

Description

Technical Field

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

[0002] High-voltage switchgear refers to key complete sets of equipment used in power systems to receive and distribute electrical energy, and to control, protect, and monitor circuits. It is widely used in power plants, substations, industrial and mining enterprises, and urban power distribution networks.

[0003] Its interior typically houses circuit breakers, disconnectors, instrument transformers, busbars, and various control and protection components. These electrical components inevitably generate significant heat when carrying and breaking load current due to Joule heating, ferromagnetic losses, and dielectric losses. If this heat cannot be dissipated effectively and promptly, it will lead to excessive temperature rise inside the cabinet, accelerating the aging of insulation materials, reducing the current-carrying capacity and mechanical strength of electrical components, and in severe cases, even causing insulation breakdown, short-circuit faults, or equipment burnout, posing a significant threat to the reliability of the power system. Therefore, heat dissipation is one of the core issues that must be addressed in the structural design of high-voltage switchgear.

[0004] Currently, one widely used heat dissipation method in the industry is air cooling, which involves opening several ventilation holes on the side wall of the switch cabinet and using natural convection of air inside and outside the cabinet or forced ventilation by adding a fan. This allows cool air from outside to flow through the cabinet and carry away the heat generated by the electrical components, and then exhaust it through the air outlet, thereby achieving cooling.

[0005] However, the installation and operation environment of high-voltage switchgear is often complex, with a large amount of particulate pollutants such as dust and fibers suspended in the air. If this dust enters the cabinet with the cooling airflow and continues to settle, it will gradually accumulate on the surface of electrical components and in the insulation gaps. On the one hand, it will form a thermal resistance layer, weakening the heat dissipation capacity of electrical components; on the other hand, the conductive particles in the dust may form leakage channels under humid conditions, causing insulation faults such as creepage and flashover; at the same time, the hygroscopic properties of dust may also accelerate the electrochemical corrosion of metal parts, further damaging the stability and service life of the equipment.

[0006] To address this, existing technologies typically install protective components such as filter plates or dust filters at ventilation openings to prevent external dust from entering the cabinet. However, after trapping dust in the airflow for a long time, the pores on the surface of the filter plate gradually become clogged, increasing airflow resistance and significantly reducing ventilation efficiency, ultimately leading to a deterioration in the cabinet's heat dissipation capacity. Therefore, the filter plate needs to be cleaned regularly to restore its permeability.

[0007] Chinese invention patent CN117543362A discloses a high-voltage switchgear assembly, which includes a cabinet, a horizontal pushing force component, a dust filter, a drive motor, a tapping force component, an exhaust duct, and a tapping rod. During use, when cleaning dust from the dust filter, the piston rod of the horizontal pushing force component is first extended, driving the dust filter to move away from the adjacent heat dissipation holes, increasing the gap between the dust filter and the cabinet side wall. Then, the drive motor is activated, causing the drive block to rotate the dust filter to a horizontal position. Afterward, the piston rod of the horizontal pushing force component is shortened, causing the dust filter to move out of the cabinet along the clearance hole. Subsequently, the tapping force component is activated, and the exhaust duct is connected to an external fan. The reciprocating tapping of the tapping rod and the blowing air from the exhaust duct achieve dust removal from the dust filter. After dust removal, all components are reset.

[0008] However, the above solution requires removing the entire dust filter from the cabinet using a pushing and rotating mechanism before tapping and blowing it. During this process, all the ventilation holes originally covered by the dust filter are completely open and unprotected, providing a path for the cleaned dust to re-enter the cabinet, resulting in poor protection for the electrical components inside. Furthermore, pushing and rotating the dust filter inside the cabinet can easily cause dust adhering to its surface to fall off and disperse into the cabinet, further weakening the protection of the electrical components. In addition, the above solution relies on multiple independent drive sources, including a pushing mechanism, a drive motor, a tapping mechanism, and an external fan, to clean the dust filter. This complex structure not only increases energy consumption but also raises the difficulty of constructing the control system.

[0009] To address the above problems, this invention proposes a heat-dissipating high-voltage switchgear. Summary of the Invention

[0010] To address the problems existing in the background art, the present invention provides a heat-dissipating high-voltage switchgear.

[0011] To achieve the above objectives, the present invention provides the following technical solution: A heat-dissipating high-voltage switchgear includes a cabinet. Several ventilation holes are symmetrically arranged on the inner walls of both sides of the cabinet, with the ventilation holes on the same inner wall evenly distributed vertically. Each ventilation hole contains a filter plate installed vertically within it via a mating component. The cabinet contains a mounting plate that slides vertically and a driving component acting on the mounting plate. A transmission component on the mounting plate engages sequentially with several mating components to push the filter plate outwards and tilt it towards the outside of the cabinet. A movable... The piston cylinder has a piston plate that is vertically and slidably disposed inside it, dividing the interior of the piston cylinder into a first piston chamber and a second piston chamber. An air pipe is fixedly disposed at the bottom of the piston plate, and the bottom of the air pipe slidably passes through the piston cylinder and is fixedly connected to the interior of a mounting plate. The mounting plate has several spray holes facing the filter plate. A first airflow delivery assembly connected to the air pipe is disposed in the first piston chamber, and a second airflow delivery assembly connected to the air pipe is disposed in the second piston chamber. The first and second airflow delivery assemblies alternately connect and cooperate with the air pipe.

[0012] Furthermore, the mating component includes grooves, with two grooves on each side of each ventilation hole, and a sliding hole communicating with the interior of the cabinet at the bottom of each groove; a first sliding rod and a second sliding rod are slidably connected in the two sliding holes on the same side, with the first sliding rod located above the second sliding rod; the ends of the first and second sliding rods inside the cabinet are both arc-shaped, and elastic elements are provided between the first and second sliding rods and the cabinet; a sliding shaft is fixedly provided at the other end of the first sliding rod, and a rotating shaft is fixedly provided at the other end of the second sliding rod, with the rotating shaft and sliding shaft slidably disposed in corresponding grooves; both ends of the filter plate have connecting holes and oblong holes, with the rotating shaft rotatingly engaging with the connecting holes and the sliding shaft movably engaging with the oblong holes.

[0013] Furthermore, the elastic element includes a spring, and baffles are fixedly sleeved on the outer surfaces of the first slide rod and the second slide rod. The spring is sleeved on the outer surfaces of the first slide rod and the second slide rod. One end of the spring is fixedly connected to the inner wall of the cabinet, and the other end is fixedly connected to the baffle.

[0014] Furthermore, the driving component is an electric telescopic rod, the fixed end of which is fixedly installed on the inner wall of the cabinet, and the telescopic shaft of which is fixedly connected to the mounting plate.

[0015] Furthermore, the transmission component is a triangular block, which is rotatably mounted on the mounting plate. The triangular block has an inclined surface, and the inclined surface of the triangular block is in transmission cooperation with the arc-shaped ends of the first slide rod and the second slide rod.

[0016] Furthermore, a motor is fixedly mounted on the mounting plate, and the output shaft of the motor is fixedly connected to the triangular block.

[0017] Furthermore, the first airflow delivery assembly includes a first one-way valve and a second one-way valve. The first one-way valve is fixedly disposed on the top of the first piston chamber and can only be opened into the first piston chamber. The second one-way valve is fixedly disposed inside the piston plate and can only be opened from the first piston chamber into the air pipe.

[0018] Furthermore, the second airflow delivery assembly includes a third one-way valve and a fourth one-way valve. The third one-way valve is fixedly disposed on the outer surface of the air tube and can only be opened from the second piston chamber into the air tube. The fourth one-way valve is fixedly disposed at the bottom of the second piston chamber and can only be opened into the second piston chamber.

[0019] Furthermore, a door is hinged to one side of the cabinet. The cabinet interior has a receiving cavity.

[0020] Furthermore, a fan blade assembly is installed inside the cabinet.

[0021] The present invention has the following beneficial effects: 1. During the process of the drive unit raising and lowering the mounting plate, the transmission components on the surface of the mounting plate can sequentially drive the mating parts connected to each filter plate, thereby pushing the currently cleaned individual filter plate outwards from the cabinet and tilting it, while the remaining filter plates remain vertically embedded in the ventilation holes, continuously protecting the interior of the cabinet. This ensures that throughout the entire cleaning cycle, the ventilation holes not in the cleaning position are always protected by the filter plates, effectively avoiding protective gaps during cleaning, eliminating the risk of dust entering the cabinet from other ventilation holes, and improving the protection of internal electrical components. Simultaneously, the sliding and tilting of the filter plates towards the outside of the cabinet prevents dust on the filter plates from falling into the cabinet, further improving the protection of electrical components.

[0022] 2. During the process of the drive component raising and lowering the mounting plate, the piston plate slides synchronously within the piston cylinder. Through the coordinated operation of the first and second airflow delivery components, the two piston chambers alternately complete the intake and compression processes, continuously supplying airflow into the air pipe and mounting plate. This airflow is then sprayed through the nozzles onto the filter plate to remove dust. During this process, the two piston chambers work alternately, ensuring that airflow is always ejected from the mounting plate regardless of its upward or downward movement. This eliminates the need for an additional independent drive source, thus saving energy and simplifying the construction of the control system.

[0023] 3. During the stroke of the drive unit to move the mounting plate up and down once, the motor drives the triangular block to rotate, so that the filter plate presents two different tilt states in one cleaning cycle. This causes the airflow impact direction on the filter plate to change dynamically with its tilt angle, so as to blow away dust from different angles. This effectively eliminates the cleaning dead corners that exist in fixed-angle blowing, and significantly improves cleaning efficiency and effect.

[0024] 4. In this application, during the process of the driving component moving the mounting plate and its triangular block up and down, when the triangular block passes the first and second sliding rods connected to the filter plate, the first and second sliding rods can automatically reset under the elastic force of the elastic component, thereby automatically resetting the cleaned filter plate. This design eliminates the need for additional resetting operations on the cleaned filter plate, making it more convenient to use and providing better practical results.

[0025] 5. During the process of the first and second slide rods resetting the cleaned filter plate, the rotating shaft and sliding shaft will collide with the cabinet and generate vibration, which helps to further improve the cleaning effect on the residual dust on the filter plate and enhances the practicality of this application. Attached Figure Description

[0026] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the cabinet of the present invention; Figure 3 This is the present invention. Figure 2 A magnified view of a portion of point A in the middle; Figure 4 This is an exploded view of the connection between the mating component and the filter plate of the present invention; Figure 5 This is a front view of the internal structure of the cabinet of the present invention; Figure 6 This is the present invention. Figure 5 A magnified view of a portion of point B in the middle; Figure 7 This is a schematic diagram of the groove and sliding hole structure of the present invention; Figure 8 This is a cross-sectional view of the piston cylinder of the present invention; Figure 9 This is the present invention. Figure 8 A magnified view of a portion of point C in the middle; Figure 10 This is the present invention. Figure 8 A magnified view of a portion of point D in the middle; Figure 11 This is a schematic diagram of the flow direction of the one-way valve of the present invention; Figure 12 This is a diagram showing the state of the triangular block of the present invention when it is not in contact with the first sliding rod; Figure 13 This is a diagram showing the state of the triangular block moving downwards and pushing the filter plate to tilt according to the present invention. Figure 14 This is a diagram showing the state of the triangular block moving upwards and pushing the filter plate to tilt, as described in this invention.

[0027] Explanation of reference numerals in the attached figures: 1. Cabinet body; 2. Ventilation hole; 3. Groove; 4. Sliding hole; 5. First sliding rod; 6. Second sliding rod; 7. Rotating shaft; 8. Sliding shaft; 9. Filter plate; 10. Connecting hole; 11. Waist-shaped hole; 12. Baffle; 13. Spring; 14. Electric telescopic rod; 15. Mounting plate; 16. Motor; 17. Triangular block; 18. Piston cylinder; 19. Piston plate; 20. First piston chamber; 21. Second piston chamber; 22. First one-way valve; 23. Second one-way valve; 24. Air pipe; 25. Third one-way valve; 26. Fourth one-way valve; 27. Spray hole. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] like Figures 1-14 As shown, the technical solution adopted by the present invention is as follows: a heat dissipation high-voltage switch cabinet, including a cabinet body 1, a door hinged to one side of the cabinet body 1, and a receiving cavity opened inside the cabinet body 1, in which electrical components (not shown in the figure) are installed.

[0030] The cabinet 1 has several symmetrical ventilation holes 2 on its inner walls on both sides, and these ventilation holes 2 are evenly distributed vertically on the same inner wall. Each ventilation hole 2 has a filter plate 9 installed inside it via a fitting, and the filter plate 9 is vertically embedded in the ventilation hole 2. The heat generated by the electrical components during operation can be discharged outwards through the ventilation holes 2, resulting in good ventilation and heat dissipation of the cabinet 1. The filter plate 9 inside the ventilation hole 2 is used to block dust in the air, preventing dust from accumulating on the surface of the electrical components.

[0031] Specifically, such as Figure 4 and Figure 7As shown, the mating parts include grooves 3, and two grooves 3 are opened on both sides of each ventilation hole 2. The bottom of each groove 3 is provided with a sliding hole 4 that communicates with the inside of the cabinet 1. A first sliding rod 5 and a second sliding rod 6 are slidably connected in the two sliding holes 4 on the same side. The first sliding rod 5 is located above the second sliding rod 6. The ends of the first sliding rod 5 and the second sliding rod 6 inside the cabinet 1 are both arc-shaped, and elastic elements are provided between the first sliding rod 5 and the second sliding rod 6 and the cabinet 1.

[0032] The non-arc end of the first slide rod 5 is fixedly provided with a sliding shaft 8, and the non-arc end of the second slide rod 6 is fixedly provided with a rotating shaft 7. Both the rotating shaft 7 and the sliding shaft 8 are slidably disposed in the corresponding grooves 3. Both ends of the filter plate 9 are provided with connecting holes 10 and waist-shaped holes 11. The rotating shaft 7 and the connecting holes 10 are rotatably engaged, and the sliding shaft 8 is movably engaged with the waist-shaped holes 11.

[0033] More specifically, such as Figure 3 and Figure 7 As shown, the elastic element includes a spring 13. The outer surfaces of the first slide rod 5 and the second slide rod 6 are both fixedly fitted with baffles 12. The spring 13 is fitted on the outer surfaces of the first slide rod 5 and the second slide rod 6. One end of the spring 13 is fixedly connected to the inner wall of the cabinet 1, and the other end is fixedly connected to the baffle 12.

[0034] The cabinet 1 has a mounting plate 15 that is slidably positioned in the vertical direction and a driving component that acts on the mounting plate 15.

[0035] Specifically, such as Figure 2 As shown, the driving component is an electric telescopic rod 14. The electric telescopic rod 14 is fixedly installed on the inner wall of the cabinet 1, and the telescopic shaft of the electric telescopic rod 14 is fixedly connected to the top of the mounting plate 15.

[0036] The mounting plate 15 is equipped with a transmission component, which engages with several mating components one by one to push out the filter plate 9 and tilt it to the outside of the cabinet 1.

[0037] Specifically, such as Figure 6 and Figure 8 As shown, the transmission component is a triangular block 17, which is rotatably mounted on the outer surface of the mounting plate 15. The triangular block 17 has an inclined surface, and the inclined surface of the triangular block 17 is in transmission cooperation with the arc-shaped ends of the first slide rod 5 and the second slide rod 6.

[0038] More specifically, a motor 16 is fixedly mounted on the outer surface of the mounting plate 15, and the output shaft of the motor 16 is fixedly connected to the triangular block 17. The motor 16 is used to rotate and adjust the tilt state of the triangular block 17.

[0039] In addition, a piston cylinder 18 is fixedly installed on the inner wall of the cabinet 1. A piston plate 19 is sealed and slidably installed in the piston cylinder 18 along the vertical direction. The piston plate 19 divides the interior of the piston cylinder 18 into a first piston chamber 20 and a second piston chamber 21. An air pipe 24 is fixedly installed at the bottom of the piston plate 19. The bottom of the air pipe 24 is sealed and slidably inserted through the piston cylinder 18 and is fixedly connected to the interior of the mounting plate 15. Several spray holes 27 facing the filter plate 9 are opened on the mounting plate 15.

[0040] The first piston chamber 20 is provided with a first airflow delivery component that is connected to the air pipe 24, and the second piston chamber 21 is provided with a second airflow delivery component that is connected to the air pipe 24. The first airflow delivery component and the second airflow delivery component are alternately connected and cooperated with the air pipe 24.

[0041] Specifically, such as Figure 11 As shown, the first airflow delivery assembly includes a first one-way valve 22. The top of the first piston chamber 20 is fixedly provided with the first one-way valve 22, which can only be opened into the first piston chamber 20. The piston plate 19 is fixedly provided with a second one-way valve 23, which can only be opened from the first piston chamber 20 into the air pipe 24.

[0042] Specifically, such as Figure 11 As shown, the second airflow delivery assembly includes a third one-way valve 25. The outer surface of the air pipe 24 is fixedly provided with a third one-way valve 25 that can only be opened from the second piston chamber 21 into the air pipe 24. The bottom of the second piston chamber 21 is fixedly provided with a fourth one-way valve 26 that can only be opened into the second piston chamber 21.

[0043] In addition, a fan blade assembly (conventional prior art, not shown in the figure) is installed inside the cabinet 1, which can be used to improve the heat dissipation effect inside the cabinet 1.

[0044] It should be noted that the accompanying drawings in this application are all structural schematic diagrams, and their specific sizes may be adjusted according to actual use.

[0045] Working principle: In the initial state, the electric telescopic rod 14 is in the retracted state, and the triangular block 17 fixed on the mounting plate 15 is located above the uppermost first sliding rod 5 (e.g., Figure 12 (As shown). At this time, the high-voltage switchgear is operating normally. The airflow enters the cabinet 1 through the vertically positioned filter plates 9 on both sides and the ventilation holes 2, cooling the electrical components inside the cabinet 1.

[0046] After the switch cabinet has been in operation for a period of time, dust will accumulate on the surface of the filter plate 9, which will reduce the ventilation efficiency of the ventilation hole 2.

[0047] At this time, the telescopic shaft of the electric telescopic rod 14 is extended, and the telescopic shaft of the electric telescopic rod 14 pushes the mounting plate 15 to slide downward in the vertical direction. The movement of the mounting plate 15 causes the triangular block 17 fixed on it to move downward synchronously, so that the triangular block 17 contacts and pushes the first slide rod 5 and the second slide rod 6 to slide outward through the inclined plane, so that the spring 13 is compressed.

[0048] Due to the inclined surface of the triangular block 17, the sliding distances of the first slide bar 5 and the second slide bar 6 are different. Because of this difference in sliding distance, through the cooperation of the sliding shaft 8, the rotating shaft 7, the oblong hole 11, and the connecting hole 10, the filter plate 9 being cleaned is pushed out of the ventilation hole 2 in an upward-tilting posture (as shown in the image). Figure 13 (As shown).

[0049] At the same time, as the mounting plate 15 moves downward, the mounting plate 15 drives the air pipe 24, which is fixedly connected to it, to move downward synchronously. The movement of the air pipe 24 pulls the piston plate 19, which is fixedly connected to it, to slide downward inside the piston cylinder 18.

[0050] As the piston plate 19 descends, it compresses the gas in the second piston chamber 21. Under pressure, the third one-way valve 25 opens, and the compressed gas enters the air pipe 24 through the third one-way valve 25. Subsequently, the airflow flows down along the air pipe 24 into the mounting plate 15, and finally is ejected at high speed from the multiple nozzles 27 on the mounting plate 15 facing the filter plate 9. The high-speed airflow impacts the inner surface of the filter plate 9, which has been pushed out and is in an inclined state, easily blowing off the dust adhering to the outer surface of the filter plate 9 from the inside out.

[0051] During the cleaning process described above, except for the filter plate 9 being cleaned, all other filter plates 9 remain vertically embedded in their corresponding ventilation holes 2 under the combined action of the first slide bar 5, the second slide bar 6, and the spring 13. These filter plates 9 not in the cleaning position continuously and effectively block external air and dust raised during the cleaning process, ensuring that the interior of the cabinet 1 is always protected.

[0052] As the telescopic shaft of the electric telescopic rod 14 continues to extend, the triangular block 17 continues to move downwards, sequentially disengaging from the first slide bar 5 and the second slide bar 6 connected to the current filter plate 9. Under the elastic force of the spring 13, the cleaned filter plate 9 automatically returns to its initial working state. After resetting, the triangular block 17 continues to move downwards, repeating the above operation with the first slide bar 5 and the second slide bar 6 corresponding to the next filter plate 9 to be cleaned, and so on, to perform cleaning operations on each of the filter plates 9 below.

[0053] Once the triangular block 17 moves to below the second sliding rod 6 at the bottom, a single downward cleaning cycle is completed. Subsequently, the motor 16 drives the triangular block 17 to rotate 180 degrees, reversing the direction of its inclined surface. Figure 14 direction shown.

[0054] At this time, the telescopic shaft of the control electric telescopic rod 14 retracts, causing the mounting plate 15 to move upward. During this process, due to the change in the orientation of the inclined surface, the triangular block 17 first contacts the arc-shaped end of the lower second slide rod 6 and begins to push the second slide rod 6 outward; after the mounting plate 15 continues to move upward a certain distance, the triangular block 17 then contacts the arc-shaped end of the upper first slide rod 5, similarly pushing it outward. At this time, because the contact sequence changes to pushing the second slide rod 6 first and then the first slide rod 5, the distance that the second slide rod 6 slides outward is greater than that of the first slide rod 5, and the pushed-out filter plate 9 exhibits a posture with its lower part tilted outward (e.g., Figure 14 (As shown).

[0055] As the mounting plate 15 moves upward, it simultaneously pushes the air pipe 24 upward, thereby driving the piston plate 19 to slide upward within the piston cylinder 18. As the piston plate 19 moves upward, it compresses the gas in the first piston chamber 20. At this time, the first one-way valve 22 remains closed, and the second one-way valve 23 opens. The compressed gas enters the air pipe 24 through the second one-way valve 23, and the airflow entering the air pipe 24 is finally ejected from the nozzle 27, purging the filter plate 9 from another angle to further and thoroughly remove the attached dust. Simultaneously, during the upward movement of the piston plate 19, a negative pressure is created in the second piston chamber 21, causing the fourth one-way valve 26 to open, allowing external air to be drawn into the second piston chamber 21, reserving gas for the next downward jet cycle.

[0056] Subsequently, as the mounting plate 15 continues to move upward, the triangular block 17 passes over each filter plate 9 one by one and completes the secondary reverse cleaning and reset process, realizing a complete extension stroke.

[0057] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-voltage switchgear with heat dissipation, characterized in that, The cabinet (1) includes a cabinet body (1), and several ventilation holes (2) are symmetrically opened on the inner walls of both sides of the cabinet body (1). The ventilation holes (2) located on the inner wall of the same side are evenly distributed in the vertical direction. Each ventilation hole (2) is provided with a filter plate (9) through a fitting component. The filter plate (9) is vertically embedded in the ventilation hole (2). The cabinet (1) is equipped with a mounting plate (15) that is slidably limited in the vertical direction, and a driving component that acts on the mounting plate (15). The mounting plate (15) is provided with a transmission component, which is in sequential transmission cooperation with several mating components to push out the filter plate (9) and tilt it to the outside of the cabinet (1). A piston cylinder (18) is fixedly installed on the inner wall of the cabinet (1). A piston plate (19) is sealed and slidably installed in the piston cylinder (18) along the vertical direction. The piston plate (19) divides the interior of the piston cylinder (18) into a first piston chamber (20) and a second piston chamber (21). The bottom of the piston plate (19) is fixedly provided with an air pipe (24). The bottom of the air pipe (24) is sealed and slides through the piston cylinder (18) and is fixedly connected to the interior of the mounting plate (15). The mounting plate (15) is provided with a number of spray holes (27) facing the filter plate (9). The first piston chamber (20) is provided with a first airflow delivery component that communicates with the air pipe (24), and the second piston chamber (21) is provided with a second airflow delivery component that communicates with the air pipe (24). The first airflow delivery component and the second airflow delivery component are alternately connected and cooperated with the air pipe (24).

2. The high-voltage switchgear with heat dissipation according to claim 1, characterized in that, The fitting includes a groove (3), and two grooves (3) are opened on both sides of each ventilation hole (2). The bottom of each groove (3) is provided with a sliding hole (4) that communicates with the inside of the cabinet (1). A first sliding rod (5) and a second sliding rod (6) are slidably connected in the two sliding holes (4) on the same side. The first sliding rod (5) is located above the second sliding rod (6). The ends of the first sliding rod (5) and the second sliding rod (6) inside the cabinet (1) are both arc-shaped, and elastic elements are provided between the first sliding rod (5) and the second sliding rod (6) and the cabinet (1). The other end of the first slide rod (5) is fixedly provided with a sliding shaft (8), and the other end of the second slide rod (6) is fixedly provided with a rotating shaft (7). The rotating shaft (7) and the sliding shaft (8) are both slidably arranged in the corresponding groove (3). Both ends of the filter plate (9) are provided with a connecting hole (10) and a waist-shaped hole (11). The rotating shaft (7) is rotatably engaged with the connecting hole (10), and the sliding shaft (8) is movably engaged with the waist-shaped hole (11).

3. The high-voltage switchgear with heat dissipation according to claim 2, characterized in that, The elastic element includes a spring (13). The outer surfaces of the first slide rod (5) and the second slide rod (6) are both fixedly fitted with baffles (12). The spring (13) is fitted on the outer surfaces of the first slide rod (5) and the second slide rod (6). One end of the spring (13) is fixedly connected to the inner wall of the cabinet (1), and the other end is fixedly connected to the baffle (12).

4. The high-voltage switchgear with heat dissipation according to claim 1, characterized in that, The driving component is an electric telescopic rod (14). The fixed end of the electric telescopic rod (14) is fixedly installed on the inner wall of the cabinet (1). The telescopic shaft of the electric telescopic rod (14) is fixedly connected to the mounting plate (15).

5. A heat-dissipating high-voltage switchgear according to claim 2, characterized in that, The transmission component is a triangular block (17), which is rotatably mounted on the mounting plate (15). The triangular block (17) has an inclined surface, and the inclined surface of the triangular block (17) is in transmission cooperation with the arc-shaped ends of the first slide rod (5) and the second slide rod (6).

6. A heat-dissipating high-voltage switchgear according to claim 5, characterized in that, A motor (16) is fixedly installed on the mounting plate (15), and the output shaft of the motor (16) is fixedly connected to the triangular block (17).

7. A heat-dissipating high-voltage switchgear according to claim 1, characterized in that, The first airflow delivery assembly includes a first one-way valve (22) and a second one-way valve (23). The first one-way valve (22) is fixedly disposed on the top of the first piston chamber (20) and can only be opened into the first piston chamber (20). The second one-way valve (23) is fixedly disposed inside the piston plate (19) and can only be opened from the first piston chamber (20) into the air pipe (24).

8. A heat-dissipating high-voltage switchgear according to claim 1, characterized in that, The second airflow delivery assembly includes a third one-way valve (25) and a fourth one-way valve (26). The third one-way valve (25) is fixedly disposed on the outer surface of the air pipe (24) and can only be opened from the second piston chamber (21) into the air pipe (24). The fourth one-way valve (26) is fixedly disposed at the bottom of the second piston chamber (21) and can only be opened into the second piston chamber (21).

9. A heat-dissipating high-voltage switchgear according to claim 1, characterized in that, A cabinet door is hinged to one side of the cabinet (1). The cabinet (1) has a receiving cavity inside.

10. A heat-dissipating high-voltage switchgear according to claim 1, characterized in that, The fan blade assembly is installed inside the cabinet (1).

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