High-voltage switch cabinet

Abstract

The invention relates to the technical field of high-voltage switch cabinets, in particular to a high-voltage switch cabinet which comprises a cabinet body, an air exchange cavity is fixedly installed in the cabinet body and located at the top of the inner wall of the cabinet body, a first motor is fixedly installed at the top of the air exchange cavity, and an output shaft of the first motor is fixedly connected with a screw. And a piston plate is slidably installed in the air exchange cavity, the piston plate is slidably installed on the outer side of the screw rod, a first spring is arranged between the top of the piston plate and the inner wall of the air exchange cavity, a limiting ring is integrally formed in the air exchange cavity, and the piston plate is located below the limiting ring. According to the high-voltage switch cabinet, the interior of the cabinet body and the exhaust pipe are effectively cooled through upward movement of the piston plate, so that the service life of the high-voltage switch cabinet is prolonged, the continuity of upward movement of the piston plate is improved through locking and separation between the first sliding nut and the second sliding nut, meanwhile, the use safety of the air exchange cavity is improved, and the heat dissipation efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage switch cabinets, and in particular to a high-voltage switch cabinet. Background Art

[0002] High-voltage switchgear is an indispensable device in the power system. It is responsible for controlling, protecting and monitoring high-voltage circuits. With the growth of power demand and the development of power grid technology, the power density of high-voltage switchgear has been continuously improved, which has led to an increase in the heat generated during the operation of the equipment. The heat dissipation problem has become particularly critical. The existing heat dissipation methods usually adopt forced air cooling and liquid cooling. For example, a high-voltage switchgear in the publication number: CN117543395A, when in use, external air enters the high-voltage switchgear 1 from the air inlet, the first fan is located at the bottom of the chamber where the air inlet is located, and the air entering the high-voltage switchgear is blown upward, and an air outlet is arranged on the top of the high-voltage switchgear. There is a first fan. The negative pressure generated by the first fan will be turned into high-temperature air by the chamber and blown out to the external environment. However, in the process of heat dissipation of the high-voltage switch cabinet, it is necessary to enhance the heat dissipation effect by adding the first fan and increasing the power of the first fan. As the number increases, the first fan will generate a lot of noise during operation, which will affect the operator. As the power increases, the first fan will also generate high temperature during long-term operation, and the high temperature generated by the first fan cannot be effectively dissipated, thereby transmitting the heat energy to the high-voltage switch cabinet, resulting in the service life of the high-voltage switch cabinet and the first fan being affected, and the problem of inability to dissipate heat. Summary of the invention

[0003] The purpose of the present invention is to solve the problems in the background technology and to propose a high-voltage switch cabinet.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A high-voltage switch cabinet comprises a cabinet body, wherein an air exchange chamber is fixedly installed inside the cabinet body, the air exchange chamber is located at the top of the inner wall of the cabinet body, a motor is fixedly installed on the top of the air exchange chamber, the output shaft of the motor is fixedly connected with a screw, a piston plate is slidably installed inside the air exchange chamber, the piston plate is slidably installed on the outside of the screw, a spring is arranged between the top of the piston plate and the inner wall of the air exchange chamber, a limiting ring is integrally formed inside the air exchange chamber, the piston plate is located below the limiting ring, a buffer plate is movably installed inside the air exchange chamber, and a plurality of The piston plate is located above the buffer plate, and a sliding nut 1 and a sliding nut 2 are movably installed on the top of the piston plate. A rack is integrally formed on the side wall of the sliding nut 2, and a movable groove 3 is provided on the side wall of the sliding nut 1. The rack is slidably inserted into the inside of the movable groove 3. The screw is rotatably installed between the sliding nut 1 and the sliding nut 2. The sliding nut 1 and the sliding nut 2 are threadably matched with the screw. An air intake port 1 is provided at the bottom of the air exchange chamber, and the interior of the air exchange chamber is connected to the interior of the cabinet through the air intake port 1, and a one-way valve 1 is fixedly installed inside the air intake port 1.

[0006] In the above-mentioned high-voltage switch cabinet, an exhaust pipe is fixedly installed at the bottom of the air exchange chamber, an air inlet hole is opened at the bottom of the exhaust pipe, a one-way valve three is fixedly installed inside the air inlet hole, a heat dissipation port is opened at the top of the cabinet body, an exhaust hole one is opened at the top of the exhaust pipe, the exhaust hole one and the heat dissipation port are communicated with each other, an air inlet is opened at the top of the cabinet body, an air intake port two is opened at the top of the air exchange chamber, the air intake port two and the air inlet are communicated with each other, and a one-way valve two is fixedly installed inside the air intake port two.

[0007] In the above-mentioned high-voltage switch cabinet, a ventilation pipe is fixedly installed on the side wall of the air exchange chamber, a one-way valve four is fixedly installed on the side wall of the ventilation pipe, the one-way valve four is located above the limiting ring, an exhaust hole two is opened at the bottom of the ventilation pipe, a one-way valve five is fixedly installed inside the exhaust hole two, an exhaust branch pipe is integrally formed at the bottom of the exhaust pipe, and the exhaust hole two is fixedly mounted on the outside of the exhaust branch pipe.

[0008] In the above-mentioned high-voltage switch cabinet, a lock plate is slidably installed inside the movable groove three, a spring six is ​​provided between the bottom of the lock plate and the bottom of the movable groove three, the top of the lock plate is meshed with the rack, and the side walls of the lock plate and the rack are respectively provided with a lock hole one and a lock hole two, a lock rod two is slidably installed inside the lock hole two, a spring five is provided between the bottom of the lock rod two and the bottom of the movable groove three, and the lock rod two is slidably inserted into the inside of the lock hole one.

[0009] In the above-mentioned high-voltage switch cabinet, a movable groove 1 is provided at the top of the air exchange chamber, a locking rod 1 is movably installed inside the movable groove 1, a spring 3 is provided between the top of the locking rod 1 and the top of the movable groove 1, a spring 4 is provided between the side wall of the locking rod 1 and the side wall of the movable groove 1, the locking rod 1 is slidably inserted into the inside of the locking hole 1, a sliding groove 2 is provided on the top of the sliding nut 1, and the locking rod 1 is slidably installed inside the sliding groove 2.

[0010] In the above-mentioned high-voltage switch cabinet, the bottom of the sliding nut 1 and the sliding nut 2 are both integrally formed with a slider, the top of the piston plate is provided with a slide groove 1, the slider is slidably installed inside the slide groove 1, the bottom of the slider is provided with an inclined groove 2, the side wall of the piston plate is provided with a movable groove 2, the inside of the movable groove 2 is slidably installed with a spring sliding tooth, and the spring sliding tooth is slidably installed inside the inclined groove 2.

[0011] In the above-mentioned high-voltage switch cabinet, a convex tooth 1 is integrally formed on the top of the air exchange chamber, and an inclined groove 1 is provided on the top of the sliding nut 1 and the sliding nut 2, and the convex tooth 1 is slidably installed inside the inclined groove 1.

[0012] In the above-mentioned high-voltage switch cabinet, a plurality of air inlet nets are fixedly installed on the front door and the rear door of the cabinet, and a ventilation net is fixedly installed on the side wall of each compartment inside the cabinet.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] 1. The present invention cooperates between the piston plate and the air exchange chamber. In the process of heat dissipation of the cabinet, the motor 1 drives the screw to rotate, and the screw drives the piston plate to move upward through the sliding nut 1 and the sliding nut 2. At this time, the piston plate sucks the hot air inside the cabinet into the interior of the air exchange chamber, and discharges the cold air inside the air exchange chamber into the interior of the ventilation pipe. The cold air outside the cabinet enters the interior of the cabinet through the air intake net for heat dissipation. The cold air enters the interior of the exhaust pipe through the transportation of the ventilation pipe to dissipate the heat of the exhaust pipe. The piston plate moves upward to effectively dissipate the heat of the interior of the cabinet and the exhaust pipe, respectively, thereby improving the service life of the high-voltage switch cabinet.

[0015] 2. The present invention achieves heat dissipation for the cabinet by the cooperation between the sliding nut 1 and the sliding nut 2. When the locking rod 2 locks the sliding nut 1 and the sliding nut 2, the screw drives the piston plate to move upward through the sliding nut 1 and the sliding nut 2 to replace the air inside the cabinet. When the sliding nut 1 and the sliding nut 2 are separated, the piston plate moves downward through the spring, so that the hot air inside the air exchange chamber is quickly discharged, and at the same time, the cold air outside the cabinet enters the air exchange chamber to dissipate the heat inside the air exchange chamber. When the piston plate hits the buffer plate, the locking rod 2 locks the sliding nut 1 and the sliding nut 2 again. Through the locking and separation between the sliding nut 1 and the sliding nut 2, the continuity of the upward movement of the piston plate is improved, and the safety of the air exchange chamber during use is improved, thereby improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a cross-sectional view of the overall structure of the present invention;

[0018] Figure 3 For the present invention Figure 2 The enlarged schematic diagram of point A in the middle;

[0019] Figure 4 It is a structural schematic diagram of the air exchange cavity in the present invention;

[0020] Figure 5 It is a structural cross-sectional view of the air exchange cavity in the present invention;

[0021] Figure 6 For the present invention Figure 5 The enlarged schematic diagram of point B in the middle;

[0022] Figure 7 It is a partial cross-sectional view of the air exchange chamber in the present invention;

[0023] Figure 8 It is a disassembly schematic diagram of the sliding nut 1 and the sliding nut 2 in the present invention;

[0024] Fig. 9 It is a bottom schematic diagram of the sliding nut 1 and the sliding nut 2 in the present invention;

[0025] Fig.10 It is a disassembled schematic diagram of the exhaust pipe and the ventilation pipe in the present invention.

[0026] In the figure: 1, cabinet; 111, heat dissipation port; 112, air inlet; 121, air inlet net; 122, ventilation net; 21, air exchange chamber; 211, motor 1; 212, screw rod; 213, convex tooth 1; 214, air inlet 1; 215, one-way valve 1; 216, movable groove 1; 217, limit ring; 218, air inlet 2; 219, one-way valve 2; 22, piston plate; 221, spring 1; 222, buffer plate; 223, spring 2; 224, slide groove 1; 225, movable groove 2; 231, exhaust pipe; 232, exhaust branch pipe; 233, exhaust hole 1; 234. Air inlet; 235. One-way valve three; 236. Air exchange pipe; 237. One-way valve four; 238. Exhaust hole two; 239. One-way valve five; 241. Sliding nut one; 242. Sliding nut two; 243. Inclined slot one; 244. Inclined slot two; 245. Sliding slot two; 246. Rack; 247. Locking hole one; 248. Movable slot three; 249. Sliding block; 251. Locking rod one; 252. Spring three; 253. Spring four; 254. Locking rod two; 255. Spring five; 256. Locking plate; 257. Spring six; 258. Locking hole two; 259. Spring sliding tooth. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Reference Figure 1 - Fig.10As shown, a high-voltage switch cabinet includes a cabinet body 1, an air exchange chamber 21 is fixedly installed inside the cabinet body 1, the air exchange chamber 21 is located at the top of the inner wall of the cabinet body 1, a motor 211 is fixedly installed on the top of the air exchange chamber 21, and the output shaft of the motor 211 is fixedly connected with a screw 212, a piston plate 22 is slidably installed inside the air exchange chamber 21, the piston plate 22 is slidably installed on the outside of the screw 212, a spring 221 is provided between the top of the piston plate 22 and the inner wall of the air exchange chamber 21, a limiting ring 217 is integrally formed inside the air exchange chamber 21, the piston plate 22 is located below the limiting ring 217, a buffer plate 222 is movably installed inside the air exchange chamber 21, and a plurality of evenly distributed springs are provided between the bottom of the buffer plate 222 and the bottom of the air exchange chamber 21 223, the piston plate 22 is located above the buffer plate 222, and a sliding nut 241 and a sliding nut 242 are movably installed on the top of the piston plate 22, and a rack 246 is integrally formed on the side wall of the sliding nut 242, and a movable groove 3 248 is provided on the side wall of the sliding nut 241, and the rack 246 is slidably inserted into the inside of the movable groove 3 248, and the screw 212 is rotatably installed between the sliding nut 241 and the sliding nut 242, and the sliding nut 241 and the sliding nut 242 are threadedly matched with the screw 212, and an air intake port 214 is provided at the bottom of the air exchange chamber 21, and the interior of the air exchange chamber 21 is connected to the interior of the cabinet 1 through the air intake port 214, and a one-way valve 215 is fixedly installed inside the air intake port 214.

[0030] The working principle of the piston plate 22 is as follows: when the motor 211 is started, the screw 212 rotates, and the sliding nut 241 and the sliding nut 242 are threadedly matched with the screw 212, so that the sliding nut 241 and the sliding nut 242 drive the piston plate 22 to move upward. At this time, the one-way valve 215 is opened, and the piston plate 22 sucks the hot air inside the cabinet 1 into the air exchange chamber 21 through the air inlet 214, and discharges the cold air inside the air exchange chamber 21. When the piston plate 22 hits the limit ring 217, the sliding nut 241 and the sliding nut 242 are threadedly matched with the screw 212, so that the sliding nut 241 and the sliding nut 242 drive the piston plate 22 to move upward. Nut 242 cancels the threaded fit between the screw 212, and the piston plate 22 slides downward through the spring 121. At this time, the one-way valve 1 215 is closed, so that the hot air inside the air exchange chamber 21 is discharged, and the cold air outside the cabinet 1 is drawn into the air exchange chamber 21. When the piston plate 22 moves downward and hits the buffer plate 222, the sliding nut 1 241 and the sliding nut 2 242 are threadedly fitted with the screw 212 again, so that the sliding nut 1 241 and the sliding nut 2 242 drive the piston plate 22 to move upward again to replace the hot air inside the cabinet 1.

[0031] like Figure 3-Figure 5 and Fig.10As shown, an exhaust pipe 231 is fixedly installed at the bottom of the air exchange chamber 21, an air inlet 234 is opened at the bottom of the exhaust pipe 231, and a check valve 235 is fixedly installed inside the air inlet 234. A heat dissipation port 111 is opened at the top of the cabinet 1, an exhaust hole 233 is opened at the top of the exhaust pipe 231, and the exhaust hole 233 and the heat dissipation port 111 are connected to each other, an air inlet 112 is opened at the top of the cabinet 1, and an air intake port 218 is opened at the top of the air exchange chamber 21, and the air intake port 218 and the air inlet 112 are connected to each other. A one-way valve 219 is fixedly installed inside the second air inlet 218, a ventilation pipe 236 is fixedly installed on the side wall of the air exchange chamber 21, a one-way valve 237 is fixedly installed on the side wall of the ventilation pipe 236, and the one-way valve 237 is located above the limiting ring 217. An exhaust hole 238 is opened at the bottom of the ventilation pipe 236, and a one-way valve 239 is fixedly installed inside the second exhaust hole 238. An exhaust branch pipe 232 is integrally formed at the bottom of the exhaust pipe 231, and the exhaust hole 238 is fixedly sleeved on the outside of the exhaust branch pipe 232.

[0032] The working principle of the exhaust pipe 231 and the ventilation pipe 236 is as follows: when the piston plate 22 moves upward, the one-way valve three 235 and the one-way valve two 219 are closed, and the one-way valve one 215, the one-way valve four 237 and the one-way valve five 239 are opened, so that the piston plate 22 draws the hot air inside the cabinet 1 into the interior of the ventilation chamber 21 and is located below the piston plate 22. The cold air inside the ventilation chamber 21 located above the piston plate 22 is discharged into the interior of the ventilation pipe 236 through the piston plate 22. The cold air inside the ventilation pipe 236 enters the interior of the exhaust pipe 231 through the exhaust hole two 238 and the exhaust branch pipe 232. The cold air is discharged to the exhaust pipe 231 through the exhaust hole two 238 and the exhaust branch pipe 232. The piston plate 22 is cooled by the exhaust pipe 231 and discharged to the heat dissipation port 111 for discharge. When the piston plate 22 moves downward, the one-way valve 1 215, the one-way valve 4 237 and the one-way valve 5 239 are closed, and the one-way valve 3 235 and the one-way valve 2 219 are opened, so that the piston plate 22 draws the cold air outside the cabinet 1 into the interior of the air exchange chamber 21 through the air inlet 112 and the air suction port 218, and cools the air exchange chamber 21 above the piston plate 22. The hot air inside the air exchange chamber 21 below the piston plate 22 is discharged into the exhaust pipe 231 through the piston plate 22, and is discharged to the heat dissipation port 111 for discharge.

[0033] like Figure 7-Figure 9As shown, a lock plate 256 is slidably installed inside the movable groove 3 248, a spring 6 257 is arranged between the bottom of the lock plate 256 and the bottom of the movable groove 3 248, the top of the lock plate 256 is meshed with the rack 246, and the side walls of the lock plate 256 and the rack 246 are respectively provided with a lock hole 1 247 and a lock hole 258, a lock rod 254 is slidably installed inside the lock hole 258, a spring 5 255 is arranged between the bottom of the lock rod 254 and the bottom of the movable groove 3 248, and the lock rod 254 is slidably inserted into the lock hole 1 2 47, a movable groove 216 is provided at the top of the air exchange chamber 21, a locking rod 251 is movably installed inside the movable groove 216, a spring 252 is provided between the top of the locking rod 251 and the top of the movable groove 216, a spring 4 253 is provided between the side wall of the locking rod 251 and the side wall of the movable groove 216, the locking rod 251 is slidably inserted into the inside of the lock hole 247, a sliding groove 245 is provided on the top of the sliding nut 241, and the locking rod 251 is slidably installed inside the sliding groove 245.

[0034] like Figure 5-Figure 9 As shown, a slider 249 is integrally formed at the bottom of the sliding nut 1 241 and the sliding nut 242, a slide groove 224 is provided at the top of the piston plate 22, and the slider 249 is slidably installed inside the slide groove 1 224, an inclined groove 244 is provided at the bottom of the slider 249, a movable groove 225 is provided on the side wall of the piston plate 22, a spring sliding tooth 259 is slidably installed inside the movable groove 225, and the spring sliding tooth 259 is slidably installed inside the inclined groove 244, a convex tooth 213 is integrally formed at the top of the air exchange chamber 21, an inclined groove 243 is provided at the top of the sliding nut 1 241 and the sliding nut 242, and the convex tooth 213 is slidably installed inside the inclined groove 1 243.

[0035] The working principle of the sliding nut 1 241 and the sliding nut 242 is as follows: during the upward movement of the piston plate 22, when the piston plate 22 is about to abut against the limit ring 217, the locking rod 1 251 is inserted into the interior of the locking hole 1 247 and abuts against the locking rod 254, so that the locking rod 254 moves out of the locking hole 1 247. At this time, the convex tooth 1 213 abuts against the inclined groove 1 243, so that the sliding nut 1 241 and the sliding nut 242 move in a direction away from the screw rod 212. The locking hole 1 247 drives the locking rod 1 251 to slide inside the sliding groove 245 and the movable groove 1 216. The sliding nut 1 241 and the sliding nut 242 cancel the threaded cooperation with the screw rod 212. At this time, the piston plate 22 is connected to the piston plate 22 by the spring 1 22 1 slides downward, the locking rod 1 251 moves out of the locking hole 1 247, and the locking rod 1 251 returns to its original position through the spring 3 252 and the spring 4 253, and the locking plate 256 locks the sliding nut 242 through the rack 246. When the piston plate 22 abuts against the buffer plate 222, the buffer plate 222 abuts against the spring sliding tooth 259, and the spring sliding tooth 259 abuts against the inclined groove 244, so that the sliding nut 1 241 and the sliding nut 242 slide in the direction of the screw rod 212. When the locking hole 1 247 and the locking hole 258 are connected to each other, the locking rod 254 slides into the interior of the locking hole 1 247 through the spring 5 255. At this time, the sliding nut 1 241 and the sliding nut 242 are threadedly matched with the screw rod 212 again, and the piston plate 22 continues to move upward.

[0036] like Figure 1 and Figure 2 As shown, a plurality of air inlet nets 121 are fixedly installed on the front door and the rear door of the cabinet 1 , and a ventilation net 122 is fixedly installed on the side walls of each compartment inside the cabinet 1 .

[0037] The air inlet net 121 draws the air outside the cabinet 1 into the cabinet 1 for heat dissipation, and the ventilation net 122 connects the various compartments inside the cabinet 1.

[0038] The specific working principle and use method of the present invention are explained in detail below: start the motor 1 211, the screw 212 drives the piston plate 22 to slide upward through the sliding nut 1 241 and the sliding nut 242, and the piston plate 22 draws the hot air inside the cabinet 1 into the interior of the air exchange chamber 21, so that the cold air outside the cabinet 1 enters the interior of the cabinet 1 through the air intake net 121 for cooling, and the cold air inside the air exchange chamber 21 enters the interior of the exhaust pipe 231 through the air exchange pipe 236 for cooling. When the piston plate 22 hits the limit ring 217, The sliding nut 1 241 and the sliding nut 242 are separated, and the threaded cooperation with the screw 212 is cancelled. The piston plate 22 slides downward through the spring 1 221, so that the hot air inside the air exchange chamber 21 is discharged through the exhaust pipe 231. At the same time, the cold air outside the cabinet 1 enters the interior of the air exchange chamber 21 through the air intake port 218 for cooling. When the piston plate 22 hits the buffer plate 222, the sliding nut 1 241 and the sliding nut 242 return to their original positions, and the screw 212 drives the piston plate 22 to move upward again, and continues to dissipate heat for the cabinet 1.

[0039] It is further explained that the above-mentioned fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or one-piece molding, etc., which are conventional means well known to those skilled in the art.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-voltage switch cabinet, comprising a cabinet body (1), characterized in that: An air exchange chamber (21) is fixedly installed inside the cabinet (1), and the air exchange chamber (21) is located at the top of the inner wall of the cabinet (1). A motor (211) is fixedly installed on the top of the air exchange chamber (21), and the output shaft of the motor (211) is fixedly connected to a screw rod (212). A piston plate (22) is slidably installed inside the air exchange chamber (21), and the piston plate (22) is slidably installed on the outside of the screw rod (212). A spring (221) is provided between the top of the piston plate (22) and the inner wall of the air exchange chamber (21). A limiting ring (217) is integrally formed inside the air exchange chamber (21), and the piston plate (22) is located below the limiting ring (217). A buffer plate (222) is movably installed inside the air exchange chamber (21), and a plurality of evenly distributed springs (223) are provided between the bottom of the buffer plate (222) and the bottom of the air exchange chamber (21). The plug plate (22) is located above the buffer plate (222), and a sliding nut (241) and a sliding nut (242) are movably installed on the top of the piston plate (22), and a rack (246) is integrally formed on the side wall of the sliding nut (242), and a movable groove (248) is opened on the side wall of the sliding nut (241), and the rack (246) is slidably inserted into the inside of the movable groove (248), and the screw (212) is rotated to install The air exchange chamber (21) is installed between a sliding nut (241) and a sliding nut (242), wherein the sliding nut (241) and the sliding nut (242) are threadedly matched with the screw rod (212), and an air inlet (214) is provided at the bottom of the air exchange chamber (21), and the interior of the air exchange chamber (21) is connected to the interior of the cabinet (1) through the air inlet (214), and a one-way valve (215) is fixedly installed inside the air inlet (214).

2. A high voltage switch cabinet according to claim 1, characterized in that: An exhaust pipe (231) is fixedly installed at the bottom of the air exchange chamber (21), an air inlet (234) is provided at the bottom of the exhaust pipe (231), and a check valve (235) is fixedly installed inside the air inlet (234). A heat dissipation port (111) is provided at the top of the cabinet (1), an exhaust hole (233) is provided at the top of the exhaust pipe (231), and the exhaust hole (233) and the heat dissipation port (111) are interconnected. An air inlet (112) is provided at the top of the cabinet (1), and an air intake port (218) is provided at the top of the air exchange chamber (21), and the air intake port (218) and the air inlet (112) are interconnected. A check valve (219) is fixedly installed inside the air intake port (218).

3. A high voltage switch cabinet according to claim 2, characterized in that: A ventilation pipe (236) is fixedly mounted on the side wall of the ventilation chamber (21), a one-way valve four (237) is fixedly mounted on the side wall of the ventilation pipe (236), the one-way valve four (237) is located above the limiting ring 217, an exhaust hole two (238) is opened at the bottom of the ventilation pipe (236), a one-way valve five (239) is fixedly mounted inside the exhaust hole two (238), an exhaust branch pipe (232) is integrally formed at the bottom of the exhaust pipe (231), and the exhaust hole two (238) is fixedly mounted on the outside of the exhaust branch pipe (232).

4. A high voltage switch cabinet according to claim 1, characterized in that: A lock plate (256) is slidably installed inside the movable groove three (248), a spring six (257) is provided between the bottom of the lock plate (256) and the bottom of the movable groove three (248), the top of the lock plate (256) is meshed with the rack (246), the side walls of the lock plate (256) and the rack (246) are respectively provided with a lock hole one (247) and a lock hole two (258), a lock rod two (254) is slidably installed inside the lock hole two (258), a spring five (255) is provided between the bottom of the lock rod two (254) and the bottom of the movable groove three (248), and the lock rod two (254) is slidably inserted into the inside of the lock hole one (247).

5. A high voltage switch cabinet according to claim 4, characterized in that: A movable groove (216) is provided at the top of the air exchange chamber (21), a locking rod (251) is movably installed inside the movable groove (216), a spring (252) is provided between the top of the locking rod (251) and the top of the movable groove (216), a spring (253) is provided between the side wall of the locking rod (251) and the side wall of the movable groove (216), the locking rod (251) is slidably inserted into the inside of the locking hole (247), a sliding groove (245) is provided at the top of the sliding nut (241), and the locking rod (251) is slidably installed inside the sliding groove (245).

6. A high voltage switch cabinet according to claim 1, characterized in that: The bottom of the sliding nut 1 (241) and the sliding nut 2 (242) are both integrally formed with a slider (249), the top of the piston plate (22) is provided with a slide groove 1 (224), the slider (249) is slidably installed inside the slide groove 1 (224), the bottom of the slider (249) is provided with an inclined groove 2 (244), the side wall of the piston plate (22) is provided with a movable groove 2 (225), the inside of the movable groove 2 (225) is slidably installed with a spring sliding tooth (259), and the spring sliding tooth (259) is slidably installed inside the inclined groove 2 (244).

7. A high voltage switch cabinet according to claim 1, characterized in that: The top of the air exchange chamber (21) is integrally formed with a convex tooth (213), the tops of the sliding nut (241) and the sliding nut (242) are provided with an inclined groove (243), and the convex tooth (213) is slidably mounted inside the inclined groove (243).

8. The high voltage switch cabinet according to claim 1, characterized in that: The front door and the rear door of the cabinet (1) are both fixedly mounted with a plurality of air intake nets (121), and the side walls of each compartment inside the cabinet (1) are both fixedly mounted with ventilation nets (122).

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