Multifunctional AC switch cabinet

Abstract

The invention discloses a multifunctional alternating-current switch cabinet, and belongs to the technical field of switch cabinets, the multifunctional alternating-current switch cabinet comprises a switch cabinet body, the rear side wall of the switch cabinet body is fixedly connected with a pressure relief assembly, the pressure relief assembly comprises a pressure relief box, the rear side wall of the switch cabinet body is inserted with a plurality of air suction cylinders, and the interiors of the air suction cylinders are slidably connected with moving plugs. Exhaust pipes are inserted into the multiple movable plugs, the exhaust pipes are fixedly connected with the same supporting magnetic plate, a round pipe is fixedly connected to the side wall of the supporting magnetic plate, the exhaust pipes communicate with the round pipe, a valve assembly is fixedly connected to the round pipe, a mounting plate is fixedly connected to the interior of the pressure relief box, and a transmission frame is fixedly connected to the round pipe; according to the explosion protection device, monitoring is conducted through the photoelectric sensor, the gas generator is triggered, the air bag drives the movable plug to move rapidly, and therefore gas generated by explosion can be effectively absorbed within a short time; the explosion pressure in the switch cabinet body is released in time, so that the damage to surrounding components is obviously reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of switch cabinets, in particular to a multifunctional AC switch cabinet. Background Art

[0002] AC switchgear (ACB cabinet) is a device used to control and protect AC circuits, mainly used in high-voltage or medium-voltage circuits. It usually includes circuit breakers, disconnectors and other protective components to cut off current in the event of circuit overload, short circuit or other abnormal conditions to ensure the safe operation of equipment and circuits. AC switchgear is widely used in power systems in industry, commerce and large buildings to provide circuit control, protection and safe disconnection functions.

[0003] A Chinese patent discloses a high-voltage box-type switch cabinet (authorization announcement number CN118610910B), which includes a high-voltage switch cabinet, including: a vacuum box, fixedly connected to the back side of the high-voltage switch cabinet, a plurality of pressure relief pipes are connected between the bottom of the high-voltage switch cabinet and the vacuum box, each pressure relief pipe is provided with an emergency shut-off valve on the side close to the high-voltage switch cabinet, and the top of the vacuum box is also connected to a first exhaust pipe; an automatic power-off protection device, arranged on the top of the vacuum box, a mounting bracket, fixedly connected to the top of the vacuum box, and a magnetic block magnetically attracted to each magnetic suction ring is fixedly connected at the bottom of the mounting bracket; a power device, arranged on the mounting bracket, and the upper and lower ends of the power device are respectively connected to the second suction and exhaust mechanism and the first suction and exhaust mechanism, and the start and stop of the second suction and exhaust mechanism and the first suction and exhaust mechanism are controlled as the sliding lifting ring frame rises and falls.

[0004] When an AC switch cabinet causes an arc flash due to equipment failure, the arc will rapidly increase the temperature of the surrounding air in a very short time and cause an explosion. However, the pressure relief mechanism in the above patent will only be activated when the gas pressure reaches a specific threshold. Since the gas pressure generated by the explosion is generated instantaneously, the pressure relief pipeline may not be able to discharge the explosion gas in a short time, resulting in a large amount of residual pressure inside the switch cabinet. These residual pressures will still cause damage to the components inside the switch cabinet and pose a safety threat to the operators. Therefore, the present invention proposes a multifunctional AC switch cabinet, the design purpose of which is to further enhance the pressure relief capacity and reduce the potential harm of the explosion gas to the components and personnel through more efficient pressure release. Summary of the invention

[0005] The object of the present invention is to provide a multifunctional AC switch cabinet to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A multifunctional AC switch cabinet comprises a switch cabinet body, a pressure relief assembly is fixedly connected to the rear side wall of the switch cabinet body, the pressure relief assembly comprises a pressure relief box, a plurality of vacuum cylinders are plugged into the rear side wall of the switch cabinet body, movable plugs are slidably connected to the interior of the plurality of vacuum cylinders, vacuum pipes are plugged into the plurality of movable plugs, the plurality of vacuum pipes are fixedly connected to the same supporting magnetic plate, a round tube is fixedly connected to the side wall of the supporting magnetic plate, and the plurality of vacuum pipes are communicated with the round tube, a valve assembly is fixedly connected to the round tube, a mounting plate is fixedly connected to the interior of the pressure relief box, a transmission frame is fixedly connected to the round tube, and the mounting plate is slidably connected to the interior of the transmission frame, an air pump is fixedly connected to the mounting plate, and the air inlet end of the air pump corresponds to the round tube, an air outlet end of the air pump is fixedly connected to an exhaust pipe, and the exhaust pipe runs through the upper side wall of the exhaust pipe, a magnetic switch is fixedly connected to the air pump, and the magnetic switch is magnetically connected to the supporting magnetic plate, and a detection assembly is fixedly connected to the mounting plate;

[0008] The detection component includes a photoelectric sensor fixedly connected to the inner wall of the switch cabinet body, an airbag fixedly connected to the mounting plate, and the photoelectric sensor is electrically connected to the airbag, a gas generator fixedly connected between the mounting plate and the transmission frame, and two exhaust components fixedly connected to the mounting plate, and both exhaust components are provided with closed-cell components.

[0009] As a further solution of the present invention, the valve assembly includes a valve housing connected to the circular tube, a valve core is rotatably connected inside the valve housing, limit frames are arranged on both sides of the valve housing, and the two limit frames are fixedly connected to the mounting plate.

[0010] As a further solution of the present invention, a rotating rod is rotatably connected inside the limit frame, and the rotating rod is fixedly connected to the valve core, and a gear is fixedly connected to the rotating rod.

[0011] As a further solution of the present invention, a rack is slidably connected to the lower inner wall of the limit frame, and the rack is meshed with the gear, and a torsion spring is fixedly connected between the rotating rod and the limit frame.

[0012] As a further solution of the present invention, the exhaust assembly includes a gas tank fixedly connected to the round tube, the gas tank is connected to a vent pipe, the vent pipe is connected to a branch pipe, and both ends of the branch pipe are connected to the switch cabinet body.

[0013] As a further solution of the present invention, a sealing sleeve is sleeved on the vent pipe, a fixing frame is fixedly connected between the sealing sleeve and the limit frame, and sliding holes are drilled on both upper and lower side walls of the vent pipe.

[0014] As a further solution of the present invention, a same T-shaped push rod is slidably connected in the two sliding holes, and the T-shaped push rod is fixedly connected to the sealing sleeve.

[0015] As a further solution of the present invention, two annular plates are fixedly connected inside the vent pipe, a sealing gasket is arranged between the two annular plates, and a thrust spring is fixedly connected between the sealing gasket and the annular plates.

[0016] As a further solution of the present invention, the closed-cell assembly includes a piston slidably connected to the inside of the vent pipe, and a sealing plate is slidably connected to the inner wall of the switch cabinet body.

[0017] As a further solution of the present invention, a fixed block is fixedly connected to the sealing plate, and a push rod is fixedly connected between the fixed block and the piston.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. When an arc flash occurs, the present invention can monitor it through a photoelectric sensor and trigger a gas generator to make the airbag drive the moving plug to move quickly, so that the gas generated by the explosion can be effectively absorbed in a short time, so that the explosion pressure inside the switch cabinet body can be released in time, thereby significantly reducing damage to surrounding components and reducing maintenance costs.

[0020] 2. The present invention can release carbon dioxide gas through the exhaust component after the pressure relief component absorbs the explosion gas, thereby reducing the oxygen concentration inside the switch cabinet body, effectively delaying the spread of fire inside the switch cabinet body, and further protecting the surrounding components. At the same time, it can also drive the sealing plate to close the heat dissipation holes of the switch cabinet body to avoid bringing external oxygen into the switch cabinet body when the smoke inside the switch cabinet body is extracted.

[0021] 3. The present invention uses a valve assembly to keep the exhaust pipe in a closed state when the movable plug moves, so that the movable plug can extract a large amount of gas inside the switch cabinet body in a short time. After the gas is extracted, the exhaust pipe is connected, so that the air pump can continue to discharge the smoke inside the switch cabinet body, avoiding secondary damage to personnel caused by a large amount of smoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of an AC switch cabinet equipped with multiple functions;

[0023] Figure 2 It is a schematic diagram of the structure inside the switch cabinet body and the pressure relief component in a multifunctional AC switch cabinet;

[0024] Figure 3 It is a structural schematic diagram of a pressure relief component in a multifunctional AC switch cabinet;

[0025] Figure 4 It is a structural schematic diagram of a detection component in a multifunctional AC switch cabinet;

[0026] Figure 5 for Figure 4 The enlarged view of point A in the middle;

[0027] Figure 6 It is a structural schematic diagram of an exhaust component in a multifunctional AC switch cabinet;

[0028] Figure 7 It is a structural schematic diagram of a closed-cell component in a multifunctional AC switch cabinet;

[0029] Figure 8 for Figure 7 The enlarged view of point B in the middle;

[0030] Fig. 9 The diagram is a state diagram of an air bag inflated in a multifunctional AC switch cabinet;

[0031] Fig.10 The present invention is a state diagram of a sealing plate in a multifunctional AC switch cabinet after it is moved.

[0032] In the figure:

[0033] 1. Switchgear body;

[0034] 2. Pressure relief assembly; 201. Pressure relief box; 202. Air pump; 203. Moving plug; 204. Air pump; 205. Supporting magnetic plate; 206. Round tube; 207. Mounting plate; 208. Transmission frame; 209. Air pump; 210. Exhaust pipe; 211. Magnetic switch;

[0035] 3. Detection component; 301. Photoelectric sensor; 302. Airbag; 303. Gas generator;

[0036] 4. Valve assembly; 401. Valve housing; 402. Valve core; 403. Limit frame; 404. Rotating rod; 405. Gear; 406. Rack; 407. Torsion spring;

[0037] 5. Exhaust assembly; 501. Gas tank; 502. Exhaust pipe; 503. Branch pipe; 504. Sealing sleeve; 505. Fixing frame; 506. Sliding hole; 507. T-type push rod; 508. Ring plate; 509. Sealing gasket; 510. Thrust spring;

[0038] 6. Closed-hole assembly; 601. Piston; 602. Sealing plate; 603. Fixing block; 604. Push rod. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Example 1: Please refer to Figures 1 to 4 In an embodiment of the present invention, a multifunctional AC switch cabinet includes a switch cabinet body 1, a pressure relief assembly 2 is fixedly connected to the rear side wall of the switch cabinet body 1, and the pressure relief assembly 2 includes a pressure relief box 201 fixedly connected to the switch cabinet body 1, and a plurality of air pumps 202 are connected and plugged to the rear side wall of the switch cabinet body 1, and a plurality of air pumps 202 are slidably connected to the inside of each of the plurality of air pumps 202, and a plurality of air pumps 204 are plugged to each of the plurality of mobile plugs 203, so that the air pumps 204 are connected to the switch cabinet body 1, and a plurality of air pumps 204 are fixedly connected to the same A support magnetic plate 205 is provided for improving the consistency and stability of the plurality of exhaust pipes 204 when they move. A round tube 206 is fixedly connected to the side wall of the support magnetic plate 205, and the plurality of exhaust pipes 204 are connected to the round tube 206. A valve assembly 4 for controlling the opening and closing of the round tube 206 is fixedly connected to the round tube 206. A mounting plate 207 is fixedly connected between the inner walls on both sides of the pressure relief box 201. A transmission frame 208 is fixedly connected to the round tube 206, and the mounting plate 207 is slidably connected to the inside of the transmission frame 208. The air pump 209 is connected, and the air inlet end of the air pump 209 corresponds to the circular tube 206. When the transmission frame 208 moves, the circular tube 206 can be driven to approach the air pump 209 until the circular tube 206 and the air pump 209 are connected. The port of the circular tube 206 is conical and is equipped with a sealing ring, so that when the circular tube 206 and the air pump 209 are connected, there will be no gas leakage. The air outlet end of the air pump 209 is fixedly connected with an exhaust pipe 210, and the exhaust pipe 210 runs through the upper side wall of the exhaust pipe 210. After the circular tube 206 and the air inlet end of the air pump 209 are connected The air pump 209 can extract the smoke after the arc explosion inside the switch cabinet body 1 through the circular tube 206 and the exhaust pipe 204, and discharge the smoke through the exhaust pipe 210. The air pump 209 is fixedly connected with a magnetic switch 211, and the magnetic switch 211 is magnetically connected with the supporting magnetic plate 205. When the supporting magnetic plate 205 moves close to the magnetic switch 211, the magnetic switch 211 senses the magnetic field and turns on the switch of the air pump 209, so that the air pump 209 can be automatically started. The mounting plate 207 is fixedly connected with a detection component 3 for detecting arc flash;

[0041] The detection assembly 3 includes a photoelectric sensor 301 fixedly connected to the inner wall of the switch cabinet body 1. A specific optical filter such as an ultraviolet filter is designed at the front end of the photoelectric sensor 301 to only allow a specific wavelength of the arc flash to pass through, thereby reducing the possibility of false detection. The detection structure of the photoelectric sensor 301 is a prior art and will not be described in detail here. An air bag 302 is fixedly connected to the mounting plate 207, and the photoelectric sensor 301 is electrically connected to the air bag 302. When an arc flashes, the microcomputer detects it through the photoelectric sensor 301 and starts the gas generator 303 through the controller to make the gas The generator 303 generates a large amount of gas in a short period of time. The structural principle of the gas generator 303 is similar to that of the safety airbag in the vehicle, and the gas generator 303 can be expanded quickly. In addition, the total amount of gas that the gas generator 303 can generate must be less than the total amount of gas that the airbag can withstand to avoid the explosion of the gas generator 303. The gas generator 303 is fixedly connected between the mounting plate 207 and the transmission frame 208. Two exhaust assemblies 5 for discharging carbon dioxide are fixedly connected to the mounting plate 207. Both exhaust assemblies 5 are provided with a closed-cell assembly 6 for closing the heat dissipation holes.

[0042] It is worth noting that in order to prevent the arc flash from not being detected due to a malfunction of the photoelectric sensor 301 or other factors, resulting in a failure in pressure relief and causing the switch cabinet body 1 to explode, a plurality of pressure relief valves will be installed on the switch cabinet body 1. Therefore, the pressure relief valve is used as a second line of protection. The pressure relief valve is a well-known technology for those skilled in the art and will not be described in detail here. The pressure relief valve is not shown in the figure. The purpose of this application is to further improve its pressure relief effect.

[0043] The valve assembly 4 includes a valve housing 401 connected to the circular tube 206, a valve core 402 is rotatably connected inside the valve housing 401, the valve core 402 is not connected to the circular tube 206 in the initial state, and the angle between the valve hole of the valve core 402 and the circular tube 206 is 90 degrees, and limit frames 403 are arranged on the left and right sides of the valve housing 401, and the two limit frames 403 are fixedly connected to the mounting plate 207, a rotating rod 404 is rotatably connected inside the limit frame 403, and the rotating rod 404 is fixedly connected to the valve core 402, a gear 405 is fixedly connected to the rotating rod 404, and a rack 406 is slidably connected to the lower inner wall of the limit frame 403, and the rack 406 is fixedly connected to the valve core 402. 06 is meshed with gear 405, and a torsion spring 407 is fixedly connected between the rotating rod 404 and the limit frame 403. When the gas generator 303 is triggered, the airbag 302 expands rapidly and pushes the transmission frame 208, so that the transmission frame 208 drives the round tube 206 to move rapidly, and finally the round tube 206 drives the rack 406 to abut against the mounting plate 207. At this time, the rack 406 is displaced and drives the gear 405 to rotate. The displacement of the rack 406 can drive the gear 405 and the valve core 402 to rotate 90 degrees, so that the valve core 402 is connected with the round tube 206, so that the air pump 209 can extract the smoke inside the switch cabinet body 1.

[0044] Example 2: Please refer to Figures 5 to 10 Based on Example 1, the exhaust component 5 includes a gas tank 501 fixedly connected to the circular tube 206. The gas tank 501 contains compressed carbon dioxide gas, which can play an effective flame retardant role. The gas tank 501 is connected to a vent pipe 502, and the vent pipe 502 is connected to a branch pipe 503, and both ends of the branch pipe 503 are connected to the switch cabinet body 1. A sealing sleeve 504 is sleeved on the vent pipe 502, and a fixing frame 505 is fixedly connected between the sealing sleeve 504 and the limit frame 403. Sliding holes 506 are drilled on the upper and lower side walls of the vent pipe 502. The sealing sleeve 504 can prevent the gas released from the gas tank 501 from leaking from the sliding holes 506. The same T-shaped push rod 507 is slidably connected in the two sliding holes 506, and the T-shaped push rod 507 is fixedly connected to the sealing sleeve 504. The vent pipe 502 is fixed inside. Two annular plates 508 are connected. In the initial state, the thrust spring 510 pushes the sealing gasket 509 to resist one of the annular plates 508, so that the gas inside the gas tank 501 will not be released. A sealing gasket 509 is arranged between the two annular plates 508, and a thrust spring 510 is fixedly connected between the sealing gasket 509 and the annular plate 508. When the circular tube 206 moves, it will also drive the sealing sleeve 504 to move through the limit frame 403 and the fixing frame 505. The sealing sleeve 504 pushes the sealing gasket 509 through the T-shaped push rod 507, so that the gas inside the gas tank 501 is released from the vent pipe 502, and finally discharged into the switch cabinet body 1 through the branch pipe 503. The discharged carbon dioxide gas can not only reduce the oxygen inside the switch cabinet body 1, but also dilute the smoke inside the switch cabinet body 1, so as to reduce the concentration of the discharged smoke.

[0045] The closed-hole assembly 6 includes a piston 601 slidably connected to the inside of the vent pipe 502, and a sealing plate 602 located on one side of the heat dissipation hole inside the switch cabinet body 1 is slidably connected to the inner wall of the switch cabinet body 1, and a fixing block 603 is fixedly connected to the sealing plate 602, and a push rod 604 is fixedly connected between the fixing block 603 and the piston 601. When the gas inside the gas tank 501 is released from the vent pipe 502, the generated air pressure will also push the piston 601 to move, so that the piston 601 can push the sealing plate 602 through the push rod 604, and finally close the heat dissipation hole, reduce the entry of external oxygen, and further delay the spread of the fire inside the switch cabinet body 1.

[0046] The working principle of the present invention is:

[0047] In the present invention, when an arc flash occurs in the switch cabinet body 1, the microcomputer detects it through the photoelectric sensor 301, and starts the gas generator 303 through the controller, so that the gas generator 303 generates a large amount of gas in a short time, and the gas generator 303 is quickly expanded. The expanded gas generator 303 quickly pushes the transmission frame 208 to move, and the transmission frame 208 pulls the movable plug 203 to move through the circular tube 206 and the exhaust pipe 204, so that the movable plug 203 can extract the explosion air inside the switch cabinet body 1 into the exhaust cylinder 202 in a short time, so as to stabilize the air pressure inside the switch cabinet body 1 and reduce the damage of the components inside the switch cabinet body 1;

[0048] At the same time, the round tube 206 will also drive the rack 406 to abut against the mounting plate 207 through the transmission frame 208. At this time, the rack 406 will be displaced and drive the gear 405 to rotate. The displacement of the rack 406 can drive the gear 405 and the valve core 402 to rotate 90 degrees, so that the valve core 402 is connected to the round tube 206. At the same time, the round tube 206 is connected to the air inlet end of the air pump 209. When the supporting magnetic plate 205 moves close to the magnetic switch 211, the magnetic switch 211 senses the magnetic field and turns on the switch of the air pump 209, so that the air pump 209 is automatically started. At this time, the air pump 209 can extract the smoke generated in the switch cabinet body 1 through the round tube 206 and the exhaust pipe 204, and the smoke is finally discharged through the exhaust pipe 210;

[0049] When the round tube 206 moves, the sealing sleeve 504 is also driven to move through the limit frame 403 and the fixing frame 505. The sealing sleeve 504 pushes the sealing gasket 509 through the T-shaped push rod 507, so that the gas inside the gas tank 501 is released from the vent pipe 502, and finally discharged into the switch cabinet body 1 through the branch pipe 503. The discharged carbon dioxide gas can not only reduce the oxygen inside the switch cabinet body 1, but also dilute the smoke inside the switch cabinet body 1, which can reduce the concentration of the discharged smoke, delay the spread of the fire caused by the explosion, and protect the components.

[0050] When the gas inside the gas tank 501 is released from the vent pipe 502, the generated air pressure will also push the piston 601 to move, so that the piston 601 can push the sealing plate 602 through the push rod 604, and finally close the heat dissipation hole, reduce the entry of external oxygen, and further delay the spread of the fire inside the switch cabinet body 1.

[0051] 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 multifunctional AC switch cabinet, comprising a switch cabinet body (1), characterized in that: The rear side wall of the switch cabinet body (1) is fixedly connected to a pressure relief assembly (2), the pressure relief assembly (2) comprises a pressure relief box (201), a plurality of air pumps (202) are plugged into the rear side wall of the switch cabinet body (1), a movable plug (203) is slidably connected inside the plurality of air pumps (202), an air pump pipe (204) is plugged into the plurality of movable plugs (203), a same supporting magnetic plate (205) is fixedly connected to the plurality of air pump pipes (204), a round tube (206) is fixedly connected to the side wall of the supporting magnetic plate (205), and the plurality of air pump pipes (204) are communicated with the round tube (206), a valve assembly (4) is fixedly connected to the round tube (206), and the pressure relief box (201) is provided with a plurality of air pumps (202). 01) is fixedly connected to a mounting plate (207) inside, a transmission frame (208) is fixedly connected to the circular tube (206), and the mounting plate (207) is slidably connected to the transmission frame (208), an air pump (209) is fixedly connected to the mounting plate (207), and the air inlet end of the air pump (209) corresponds to the circular tube (206), an exhaust pipe (210) is fixedly connected to the air outlet end of the air pump (209), and the exhaust pipe (210) passes through the upper side wall of the exhaust pipe (210), a magnetic switch (211) is fixedly connected to the air pump (209), and the magnetic switch (211) is magnetically connected to the supporting magnetic plate (205), and a detection component (3) is fixedly connected to the mounting plate (207); The detection component (3) comprises a photoelectric sensor (301) fixedly connected to the inner wall of the switch cabinet body (1); an air bag (302) is fixedly connected to the mounting plate (207), and the photoelectric sensor (301) is electrically connected to the air bag (302); a gas generator (303) is fixedly connected between the mounting plate (207) and the transmission frame (208); two exhaust components (5) are fixedly connected to the mounting plate (207), and both exhaust components (5) are provided with a closed-cell component (6).

2. The AC switch cabinet with multiple functions according to claim 1, characterized in that: The valve assembly (4) comprises a valve housing (401) connected to a circular tube (206), a valve core (402) being rotatably connected inside the valve housing (401), and limit frames (403) are provided on both left and right sides of the valve housing (401), and both limit frames (403) are fixedly connected to the mounting plate (207).

3. The AC switch cabinet with multiple functions according to claim 2, characterized in that: A rotating rod (404) is rotatably connected inside the limit frame (403), and the rotating rod (404) is fixedly connected to the valve core (402), and a gear (405) is fixedly connected to the rotating rod (404).

4. The AC switch cabinet with multiple functions according to claim 3, characterized in that: A rack (406) is slidably connected to the lower inner wall of the limiting frame (403), and the rack (406) is meshed with the gear (405). A torsion spring (407) is fixedly connected between the rotating rod (404) and the limiting frame (403).

5. The AC switch cabinet with multiple functions according to claim 1, characterized in that: The exhaust assembly (5) comprises a gas tank (501) fixedly connected to a circular tube (206); the gas tank (501) is connected to a vent pipe (502); the vent pipe (502) is connected to a branch pipe (503); and both ends of the branch pipe (503) are connected to the switch cabinet body (1).

6. The AC switch cabinet with multiple functions according to claim 5, characterized in that: The vent pipe (502) is sleeved with a sealing sleeve (504), a fixing frame (505) is fixedly connected between the sealing sleeve (504) and the limiting frame (403), and sliding holes (506) are drilled on both upper and lower side walls of the vent pipe (502).

7. The AC switch cabinet with multiple functions according to claim 6, characterized in that: The two sliding holes (506) are slidably connected with a same T-shaped push rod (507), and the T-shaped push rod (507) is fixedly connected to the sealing sleeve (504).

8. The AC switch cabinet with multiple functions according to claim 7, characterized in that: Two annular plates (508) are fixedly connected inside the air release pipe (502), a sealing gasket (509) is arranged between the two annular plates (508), and a thrust spring (510) is fixedly connected between the sealing gasket (509) and the annular plate (508).

9. The AC switch cabinet with multiple functions according to claim 1, characterized in that: The closed-cell assembly (6) comprises a piston (601) slidably connected to the inside of the vent pipe (502), and a sealing plate (602) is slidably connected to the inner wall of the switch cabinet body (1).

10. The AC switch cabinet with multiple functions according to claim 9, characterized in that: A fixing block (603) is fixedly connected to the sealing plate (602), and a push rod (604) is fixedly connected between the fixing block (603) and the piston (601).

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