12kV high-voltage environment-friendly cabinet

Abstract

The invention discloses a 12kV high-voltage environment-friendly cabinet which comprises a mechanism compartment, a switch air chamber and a cable compartment. The pressure relief mechanism is connected to the rear side of the interior of the switch air chamber, when the pressure in the switch air chamber is too large, the pressure in the switch air chamber is released through the pressure relief mechanism, and equipment damage or safety accidents caused by overpressure of the air chamber are prevented; air pressure passes through the exhaust structure, then passes through activated carbon and a molecular sieve and is exhausted from an airflow channel of the cover plate, various volatile organic compounds can be effectively adsorbed, harmful gas can be effectively removed, and the safety and environmental protection performance of equipment are improved; the height position of the cross rod on the first groove frame and the second groove frame can be changed, so that the cable can be clamped and positioned at different positions through the cable clamping assembly, disassembly can be facilitated, neatness of cable installation is guaranteed, and the maintenance efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of environmental protection cabinets, in particular to a 12kV high-voltage environmental protection cabinet. Background Art

[0002] The cabinet body of the high-voltage switchgear is usually equipped with a primary combined switch room, an instrument and mechanism room, and a cable room. The primary combined switch room is equipped with an upper busbar connected to the outside of the high-voltage switchgear and a lower busbar connected to the cable room. The upper busbar, disconnector, circuit breaker, lower busbar, grounding switch, grounding busbar, load switch and other primary components are usually arranged in the primary combined switch room. In terms of external insulating media, the high-voltage switchgear mainly has SF6 gas insulation, solid insulation and air insulation. Since SF6 gas is toxic and harmful, most of them are mainly air-insulated.

[0003] At present, China's patent application number: CN202320140146.0 discloses a high-protection air-insulated high-voltage environmental protection cabinet, including a cabinet body, in which an instrument room, a cable room, a gas box and a pressure relief chamber are arranged, a partition is fixedly connected to the inner side of the cabinet body, a connecting sleeve is fixedly connected to the partition, the outside of the connecting sleeve is connected to a mounting tube through a thread, a pressure relief mechanism is arranged in the mounting tube, and an airbag is fixedly connected to the outside of the mounting tube.

[0004] However, during the use of the high-voltage environmental protection cabinet in the prior art, when the air chamber of the environmental protection cabinet is over-pressurized, it is inconvenient to perform pressure relief processing, which may easily cause equipment damage or safety accidents, and some harmful gases may be easily discharged during pressure relief, affecting the surrounding environment; and after the cables are installed in the cable room, it is inconvenient to position and distribute the cables, which may easily cause interference between the cables, affecting the efficiency of maintenance. Summary of the invention

[0005] The object of the present invention is to provide a 12kV high voltage environmental protection cabinet to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a 12kV high-voltage environmental protection cabinet, comprising a mechanism compartment, a switch air chamber and a cable compartment, the left side of the mechanism compartment is connected to the switch air chamber, and the left and right sides of the top of the cable compartment are respectively connected to the switch air chamber and the mechanism compartment, a high-voltage circuit breaker is arranged in the middle side of the switch air chamber, an extended connection sleeve is installed on the top side of the high-voltage circuit breaker, an outlet bushing is connected to the bottom side of the high-voltage circuit breaker, the extended connection sleeve is arranged through the top side of the switch air chamber, the outlet bushing is connected through the cable compartment, a pressure relief mechanism is connected to the rear side of the switch air chamber, the pressure relief mechanism comprises a warehouse seat embedded in the rear side of the switch air chamber, an exhaust structure arranged in the middle side of the warehouse seat, activated carbon filled on the outside of the exhaust structure, a molecular sieve arranged on the left side of the activated carbon and a cover plate fastened to the left side wall of the warehouse seat, an air flow channel for gas discharge is arranged inside the cover plate, and a cable positioning structure for fixing the cable is arranged on the right side of the cable compartment.

[0007] Preferably, a sealed circuit breaker mechanism and a sealed isolation mechanism are respectively provided on the upper and lower sides of the interior of the mechanism compartment, and the sealed circuit breaker mechanism and the sealed isolation mechanism are both electrically connected to the high-voltage circuit breaker.

[0008] Preferably, the exhaust structure includes a sleeve embedded in the middle side of the interior of the warehouse seat, a protective cover fastened to the left side of the sleeve, a limiting assembly installed on the bottom inner side of the protective cover, a sealing plug rod arranged on the right side of the limiting assembly, a support wrapped and slid on the left side of the outer surface of the sealing plug rod, a first spring connected to the outside of the right side of the support, and air ports arranged on the upper and lower sides of the sleeve, the right side of the sealing plug rod is in contact with the right side of the interior of the sleeve, the limiting assembly is arranged through the middle side of the interior of the support, and the right side of the first spring is connected to the sealing plug rod.

[0009] Preferably, a cylindrical sleeve is provided in the middle of the left side of the shield, the air ports are provided with no less than four and are symmetrically arranged on the upper and lower sides of the sleeve seat, an annular groove is provided on the right side of the outer surface of the sealing plug rod, and a sealing rubber ring is installed inside the annular groove.

[0010] Preferably, the limiting assembly includes a mounting base whose bottom is fastened to the protective cover, a servo motor fastened to the top side of the mounting base, a worm connected to the output end of the front side of the servo motor, a worm wheel meshingly driven at the top side of the worm, an internal threaded sleeve penetrating and fixed on the middle side of the inside of the worm wheel, a supporting block rotatably arranged on the side of the internal threaded sleeve, a screw column threadedly connected to the middle part of the inner side of the internal threaded sleeve, and a supporting sleeve slidably wrapped around the right side of the outer surface of the screw column, the rear side of the supporting block is fixed to the protective cover, the supporting sleeve is fixed to the left side of the inside of the support, and the right side of the screw column is inserted and arranged inside the sealing plug rod.

[0011] Preferably, two support blocks are provided and are rotatably connected to the left and right sides of the outer surface of the internal threaded sleeve respectively. The upper and lower sides of the screw column are provided with convex pieces, and the two convex pieces penetrate and slide through the upper and lower sides of the support sleeve respectively.

[0012] Preferably, the cable positioning structure includes a first slot frame whose left side is fastened to the left side of the inner wall of the cable compartment, a cross bar locked and installed on the front side of the first slot frame, a second slot frame locked and installed on the right side of the rear part of the cross bar, and a wire clamping assembly connected to the front side of the cross bar, and the right side of the second slot frame is fastened to the right side of the inner wall of the cable compartment.

[0013] Preferably, three wire clamping assemblies are provided and are equidistantly distributed on the front side of the cross bar.

[0014] Preferably, the wire clamping assembly includes a base film connected to the cross bar at the rear side, a support groove block fixed to the rear side of the top of the base film, a rectangular block arranged on the front side of the support groove block, six clamping columns sliding through the rectangular block, an internal threaded vertical block fixedly connected to the front side of the top of the base film, a threaded rotating rod threadedly connected to the internal threaded vertical block, a slider rotatably connected to the rear end of the threaded rotating rod, a first rotating frame and a second rotating frame rotatably connected to the left and right sides of the rear of the slider respectively, a first rotating block rotatably connected to the left side of the rear of the first rotating frame, and a second rotating block rotatably connected to the right side of the rear of the second rotating frame, the bottom of the rectangular block is fixed to the base film, the bottom of the slider is slidably connected to the base film, and the rear side of the first rotating block, the right side of the rear of the first rotating frame, the left side of the rear of the second rotating frame, and the rear side of the second rotating block are respectively connected to the six clamping columns.

[0015] Preferably, a second spring is provided on the outer surface of the clamping column, and the rear side of the second spring abuts against the rectangular block, and six grooves are provided on the front side of the support slot block, and the positions of the six grooves correspond to the positions of the six clamping columns respectively.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention is provided with a pressure relief mechanism at the rear side of the switch air chamber. When the pressure in the switch air chamber is too high, the pressure in the switch air chamber is released through the pressure relief mechanism to prevent equipment damage or safety accidents caused by overpressure in the air chamber. The air pressure passes through the exhaust structure, activated carbon and molecular sieve and is discharged from the air flow channel of the cover plate, which can effectively adsorb a variety of volatile organic compounds, effectively remove harmful gases, and improve the safety and environmental protection performance of the equipment. In addition, a cable positioning structure for fixing the cable is provided on the right side of the cable compartment. The height position of the cross bar on the first slot frame and the second slot frame can be changed, so that the cable can be clamped and positioned at different positions through the wire clamping assembly, which can be easily disassembled to ensure the neatness of the cable installation and improve the efficiency of maintenance.

[0017] The present invention provides two supporting blocks, which are rotatably connected to the left and right sides of the outer surface of the internal threaded sleeve respectively to ensure the stability of the rotation of the internal threaded sleeve. The upper and lower sides of the screw column are provided with convex pieces, and the two convex pieces respectively penetrate and slide on the upper and lower sides of the support sleeve to limit the screw column and prevent the screw column from rotating, so that the screw column is laterally displaced to change its position inside the sealing plug rod. When the screw column moves to the right side, the sealing plug rod is pressed against the right side inside the sleeve seat, thereby playing a sealing role. When the screw column moves to the left side, the limit on the sealing plug rod is released to push the sealing plug rod to move to the left when the air pressure inside the switch air chamber is high, thereby discharging the gas into the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the internal structure of the right view; Figure 3 It is a structural schematic diagram of the pressure relief mechanism of the present invention; Figure 4 It is a structural schematic diagram of the exhaust structure of the present invention; Figure 5 It is a structural schematic diagram of the limit assembly of the present invention; Figure 6 It is a structural schematic diagram of the cable positioning structure of the present invention; Figure 7 It is a schematic structural diagram of the wire clamping assembly of the present invention.

[0019] In the figure: mechanism compartment-1, switch air chamber-2, cable compartment-3, sealed circuit breaker mechanism-11, sealed isolation mechanism-12, high-voltage circuit breaker-21, extended connection sleeve-22, outlet sleeve-23, pressure relief mechanism-24, cable positioning structure-31, warehouse seat-241, exhaust structure-242, activated carbon-243, molecular sieve-244, cover plate-245, sleeve seat-2421, shield-2422, limit assembly-2423, sealing plug rod-2424, support-2425, first spring-2426, air port-2427, columnar sleeve-24221, sealing rubber ring-24241, mounting seat-24231, servo motor -24232, worm-24233, worm wheel-24234, internal threaded sleeve-24235, supporting block-24236, screw column-24237, supporting sleeve-24238, protruding piece-242371, first slot frame-311, cross bar-312, second slot frame-313, wire clamping assembly-314, bottom film-3141, supporting slot block-3142, rectangular block-3143, clamping column-3144, internal threaded vertical block-3145, threaded rotating rod-3146, slider-3147, first rotating frame-3148, second rotating frame-3149, first rotating block-31410, second rotating block-31411, second spring-31441. DETAILED DESCRIPTION

[0020] In order to further explain the technical solution of the present invention, it is described in detail below through specific embodiments.

[0021] See also Figure 1 and Figure 2The present invention provides a 12kV high-voltage environmental protection cabinet, comprising a mechanism compartment 1, a switch air chamber 2 and a cable compartment 3. The left side of the mechanism compartment 1 is connected to the switch air chamber 2, and the left and right sides of the top of the cable compartment 3 are respectively connected to the switch air chamber 2 and the mechanism compartment 1. A high-voltage circuit breaker 21 is arranged in the middle side of the switch air chamber 2, an extended connection sleeve 22 is installed on the top side of the high-voltage circuit breaker 21, and an outlet bushing 23 is connected to the bottom side of the high-voltage circuit breaker 21. The extended connection sleeve 22 is arranged on the top side of the switch air chamber 2, and the outlet bushing 23 is connected to the inside of the cable compartment 3. A pressure relief mechanism 24 is connected to the rear side of the switch air chamber 2 to pass through the pressure relief mechanism 2 4 releases the pressure in the switch air chamber 2 to prevent equipment damage or safety accidents caused by overpressure in the air chamber, and can filter and absorb harmful gases in the switch air chamber 2 when releasing the pressure, thereby improving the safety and environmental protection performance of the equipment. A sealed circuit breaker mechanism 11 and a sealed isolation mechanism 12 are respectively arranged on the upper and lower sides of the mechanism compartment 1, and the sealed circuit breaker mechanism 11 and the sealed isolation mechanism 12 are both electrically connected to the high-voltage circuit breaker 21. A cable positioning structure 31 for fixing the cable is arranged on the right side of the cable compartment 3, so as to facilitate the change and adjustment of the fixed position of the cable, and can be easily disassembled to improve the maintenance efficiency.

[0022] See also Figure 1 , Figure 3 , Figure 4 and Figure 5 The present invention provides a 12kV high-voltage environmental protection cabinet, wherein the pressure relief mechanism 24 comprises a storage seat 241 embedded in the rear side of the switch air chamber 2, an exhaust structure 242 arranged in the middle side of the storage seat 241, activated carbon 243 filled on the outside of the exhaust structure 242, a molecular sieve 244 arranged on the left side of the activated carbon 243, and a cover plate 245 fastened to the left side wall of the storage seat 241, wherein an air flow channel for gas discharge is arranged inside the cover plate 245, and when the pressure in the switch air chamber 2 is too large, the air pressure passes through the exhaust structure 242, then passes through the activated carbon 243 and the molecular sieve 244 and is discharged from the air flow channel of the cover plate 245, and the activated carbon 243 can effectively adsorb a variety of volatile organic compounds and effectively remove harmful gases, and the molecular sieve 244 can remove small molecular gases such as moisture and ammonia, thereby improving the safety and environmental protection performance of the equipment.

[0023] Among them, the exhaust structure 242 includes a sleeve 2421 embedded in the middle side of the interior of the bin seat 241, a shield 2422 fastened to the left side of the sleeve 2421, a limiting component 2423 installed on the inner bottom of the shield 2422, a sealing plug rod 2424 arranged on the right side of the limiting component 2423, a support 2425 wrapped and sliding on the left side of the outer surface of the sealing plug rod 2424, a first spring 2426 connected to the right side of the support 2425, and an air port 2427 arranged on the upper and lower sides of the sleeve 2421. The right side of the sealing plug rod 2424 is in contact with the right side of the interior of the sleeve 2421. Under the action of the limiting component 2423, the sealing plug rod 2424 is tightly fitted to the right side of the interior of the bin seat 241, which further increases the sealing performance to prevent air pressure leakage. The limiting component 2423 is arranged through the middle side of the support 2425, and the right side of the first spring 2426 is connected to the sealing plug rod 2424 to provide a rightward thrust to the sealing plug rod 2424 through the first spring 2426. A cylindrical sleeve 24221 is arranged in the middle of the left side of the shield 2422 to release the limit on the sealing plug rod 2424 after the limiting component 2424 is actuated. There are no less than four gas ports 2427, which are symmetrically arranged on the upper and lower sides of the sleeve 2421 to discharge the gas into the chamber seat 241. An annular groove is opened on the right side of the outer surface of the sealing plug rod 2424, and a sealing rubber ring 24241 is installed on the inner side of the annular groove to improve the airtightness when the sealing plug rod 2424 contacts the sleeve 2421.

[0024] The limiting assembly 2423 includes a mounting seat 24231 whose bottom is fastened to the shield 2422, a servo motor 24232 fastened to the top side of the mounting seat 24231, a worm 24233 connected to the front output end of the servo motor 24232, a worm wheel 24234 meshingly driven on the top side of the worm 24233, an internal threaded sleeve 24235 penetrating and fixed on the middle side of the inner part of the worm wheel 24234, and a support block 24236 rotatably arranged on the side of the internal threaded sleeve 24235. Under the action of the servo motor 24232, the worm 24233 passes through The cooperation with the worm gear 24234 drives the internal threaded sleeve 24235 to rotate inside the support block 24236, and the screw column 24237 is threadedly connected to the middle part of the inner side of the internal threaded sleeve 24235 and the support sleeve 24238 which is slidably wrapped around the right side of the outer surface of the screw column 24237. The screw column 24237 moves in the support sleeve 24238 through the cooperation between the internal threaded sleeve 24235 and the screw column 24237. The rear side of the support block 24236 is fixed to the shield 2422, and the support sleeve 24238 is fixed to the left side of the support 2425 to adjust the support sleeve 24238. The screw column 24237 is inserted into the sealing plug rod 2424 on the right side to limit the position of the sealing plug rod 2424 through the screw column 24237. Two support blocks 24236 are provided, and are rotatably connected to the left and right sides of the outer surface of the internal threaded sleeve 24235 respectively to ensure the rotation stability of the internal threaded sleeve 24235. The screw column 24237 is provided with convex pieces 242371 on the upper and lower sides, and the two convex pieces 242371 penetrate and slide on the upper and lower sides of the support sleeve 24238 respectively to The screw column 24237 plays a limiting role, preventing the screw column 24237 from rotating, so that the screw column 24237 is laterally displaced to change its position inside the sealing plug rod 2424. When the screw column 24237 moves to the right, the sealing plug rod 2424 is pressed against the right side of the sleeve 2421, thereby playing a sealing role. When the screw column 24237 moves to the left, the limitation on the sealing plug rod 2424 is released, so as to push the sealing plug rod 2424 to move to the left when the air pressure inside the switch air chamber 2 is high, thereby discharging the gas into the external environment.

[0025] See also Figure 1 , Figure 2 , Figure 6 and Figure 7The present invention provides a 12kV high-voltage environmental protection cabinet. The cable positioning structure 31 includes a first slot frame 311 fastened to the left side of the inner wall of the cable compartment 3, a cross bar 312 locked and installed on the front side of the first slot frame 311, a second slot frame 313 locked and installed on the right side of the rear part of the cross bar 312, and a wire clamping assembly 314 connected to the front side of the cross bar 312. The right side of the second slot frame 313 is fastened to the right side of the inner wall of the cable compartment 3. The height position of the cross bar 312 on the first slot frame 311 and the second slot frame 313 can be changed, so that the cable can be clamped and positioned at different positions through the wire clamping assembly 314, so as to ensure the neatness of the cable installation and improve the convenience of maintenance. There are three wire clamping assemblies 314, which are equidistantly distributed on the front side of the cross bar 312, so as to clamp and position multiple groups of cables.

[0026] The clamping assembly 314 includes a bottom plate 3141 connected to the cross bar 312 at the rear side, a support groove block 3142 fixed to the rear side of the top of the bottom plate 3141, a rectangular block 3143 arranged at the front side of the support groove block 3142, six clamping columns 3144 sliding through the inside of the rectangular block 3143, an internal threaded block 3145 fixedly connected to the front side of the top of the bottom plate 3141, a threaded rotating rod 3146 threadedly connected to the inside of the internal threaded block 3145, and a threaded rotating rod 3146 rotatably connected to the rear side of the threaded rotating rod 3146. The slider 3147 at the end drives the slider 3147 to change its front and rear positions when the threaded rotating rod 3146 is rotated, and the first rotating frame 3148 and the second rotating frame 3149 connected to the left and right sides of the rear of the slider 3147 are rotated respectively, the first rotating block 31410 connected to the left side of the rear of the first rotating frame 3148 and the second rotating block 31411 connected to the right side of the rear of the second rotating frame 3149 are rotated, the bottom of the rectangular block 3143 is fixed to the bottom film 3141, and the bottom of the slider 3147 is fixed to the bottom film 3141. The sheet 3141 is slidably connected, and the rear side of the first rotating block 31410, the right side of the rear of the first rotating frame 3148, the left side of the rear of the second rotating frame 3149 and the rear side of the second rotating block 31411 are respectively connected with six clamping columns 3144, so that when the slider 3147 moves, the six clamping columns 3144 are driven to change the front and rear positions through the cooperation with the first rotating block 31410, the first rotating frame 3148, the second rotating frame 3149 and the second rotating block 31411, so as to compress and position the cables at different positions, and can be adapted to In response to cables of different sizes, a second spring 31441 is provided on the outer surface of the clamping column 3144, and the rear side of the second spring 31441 abuts against the rectangular block 3143, so that the second spring 31441 applies a forward restoring force to the clamping column 3144, and six grooves are provided on the front side of the support slot block 3142, and the positions of the six grooves correspond to the positions of the six clamping columns 3144, so that the six clamping columns 3144 cooperate with the six grooves to clamp and position multiple groups of cables.

[0027] The working principle of the 12kV high voltage environmental protection cabinet of the present invention is as follows: First, when the present design is used, the switch and protection of the circuit are controlled by connecting the sealed circuit breaker mechanism 11 with the high-voltage circuit breaker 21, and the connection between the sealed isolation mechanism 12 and the high-voltage circuit breaker 21 is used as an isolation device of the circuit to ensure the safety during equipment maintenance and overhaul; Second, when the air pressure in the switch air chamber 2 is too high, the servo motor 24232 can be controlled to start. Under the action of the servo motor 24232, the worm 24233 drives the internal threaded sleeve 24235 to rotate inside the support block 24236 through the cooperation with the worm wheel 24234. The internal threaded sleeve 24235 cooperates with the screw column 24237 to move the screw column 24237 inside the support sleeve 24238, so that the screw column 24237 can be moved horizontally. The sealing plug rod 2424 is displaced to move out from the inside of the sealing plug rod 2424, and the limit on the sealing plug rod 2424 is released. At this time, the sealing plug rod 2424 is pushed to move to the left under the action of the air pressure inside the switch air chamber 2, so that the gas passes through the inside of the sleeve 2421 and is discharged from the air port 2427, enters the inside of the activated carbon 243 and the molecular sieve 244, and is discharged from the air flow channel of the cover plate 245 to the external environment, so as to adsorb various volatile organic compounds through the activated carbon 243 and the molecular sieve 244; Third, when installing the cables in the cable compartment 3, the position of the cross bar 312 on the first slot frame 311 and the second slot frame 313 can be adjusted and changed, and then the groups of cables can be arranged and respectively passed through the clamping assembly 314 installed at different positions, so that the cables are located between the support slot block 3142 and the rectangular block 3143, and then the threaded rotating rod 3146 is rotated to drive the slider 3147 to change its position on the bottom film 3141. When the slider 3147 moves, the six clamping columns 3144 are driven to change their front and rear positions through cooperation with the first rotating block 31410, the first rotating frame 3148, the second rotating frame 3149 and the second rotating block 31411, so that the cables at different positions are compressed and positioned. Moreover, due to the rotation cooperation between the first rotating block 31410, the first rotating frame 3148, the second rotating frame 3149 and the second rotating block 31411, cables of different sizes can be accommodated, thereby clamping and positioning multiple groups of cables.

[0028] The above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A 12 kV high voltage environmental protection cabinet, comprising a mechanism compartment (1), a switch air chamber (2) and a cable compartment (3), wherein the left side of the mechanism compartment (1) is connected to the switch air chamber (2), and the left and right sides of the top of the cable compartment (3) are respectively connected to the switch air chamber (2) and the mechanism compartment (1), characterized in that: A high-voltage circuit breaker (21) is arranged at the middle side of the switch air chamber (2), an extended connection sleeve (22) is installed on the top side of the high-voltage circuit breaker (21), an outlet bushing (23) is connected to the bottom side of the high-voltage circuit breaker (21), the extended connection sleeve (22) is arranged through the top side of the switch air chamber (2), the outlet bushing (23) is connected through the inside of the cable compartment (3), and a pressure relief mechanism (24) is connected to the rear side of the switch air chamber (2), the pressure relief mechanism (24) comprising a pressure relief mechanism (24) embedded in the switch air chamber (2) A storage seat (241) at the rear side of the interior, an exhaust structure (242) arranged at the middle side of the storage seat (241), activated carbon (243) filled on the outside of the exhaust structure (242), a molecular sieve (244) arranged on the left side of the activated carbon (243), and a cover plate (245) fastened to the left side wall of the storage seat (241), wherein an air flow channel for gas exhaust is arranged inside the cover plate (245), and a cable positioning structure (31) for fixing the position of the cable is arranged on the right side inside the cable compartment (3).

2. According to claim 1, a 12kV high voltage environmental protection cabinet is characterized in that: A sealed circuit breaker mechanism (11) and a sealed isolation mechanism (12) are respectively arranged on the upper and lower sides of the mechanism compartment (1), and the sealed circuit breaker mechanism (11) and the sealed isolation mechanism (12) are both electrically connected to the high-voltage circuit breaker (21).

3. According to claim 1, a 12kV high voltage environmental protection cabinet is characterized in that: The exhaust structure (242) includes a sleeve (2421) embedded in the middle side of the bin seat (241), a shield (2422) fastened to the left side of the sleeve (2421), a limit assembly (2423) installed on the inner bottom of the shield (2422), a sealing plug rod (2424) arranged on the right side of the limit assembly (2423), a support (2425) wrapped and slid on the left side of the outer surface of the sealing plug rod (2424), a first spring (2426) connected to the outside of the right side of the support (2425), and an air port (2427) arranged on the upper and lower sides of the sleeve (2421), the right side of the sealing plug rod (2424) is in contact with the right side of the sleeve (2421), the limit assembly (2423) is arranged through the middle side of the support (2425), and the right side of the first spring (2426) is connected to the sealing plug rod (2424).

4. A 12kV high voltage environmental protection cabinet according to claim 3, characterized in that: A cylindrical sleeve (24221) is provided in the middle of the left side of the shield (2422), and no less than four air ports (2427) are provided, which are symmetrically arranged on the upper and lower sides of the sleeve seat (2421). An annular groove is provided on the right side of the outer surface of the sealing plug rod (2424), and a sealing rubber ring (24241) is installed inside the annular groove.

5. According to claim 3, a 12kV high voltage environmental protection cabinet is characterized in that: The limiting assembly (2423) comprises a mounting seat (24231) whose bottom is fastened to the shield (2422), a servo motor (24232) fastened to the top side of the mounting seat (24231), a worm (24233) connected to the front output end of the servo motor (24232), a worm wheel (24234) meshingly driven on the top side of the worm (24233), an internal thread sleeve (24235) penetrating and fixed on the middle side of the worm wheel (24234), and a rotatable inner thread sleeve (24235). The support block (24236) is fixed to the left side of the support (2425), the screw column (24237) is threadedly connected to the middle part of the inner side of the internal threaded sleeve (24235), and the support sleeve (24238) is slidably wrapped around the right side of the outer surface of the screw column (24237), the rear side of the support block (24236) is fixed to the protective cover (2422), the support sleeve (24238) is fixed to the left side of the support (2425), and the right side of the screw column (24237) is inserted into the sealing plug rod (2424).

6. A 12kV high voltage environmental protection cabinet according to claim 5, characterized in that: Two support blocks (24236) are provided and are rotatably connected to the left and right sides of the outer surface of the internal threaded sleeve (24235), respectively. The upper and lower sides of the screw column (24237) are provided with protruding pieces (242371), and the two protruding pieces (242371) penetrate and slide on the upper and lower sides of the support sleeve (24238), respectively.

7. The 12kV high voltage environmental protection cabinet according to claim 1, characterized in that: The cable positioning structure (31) comprises a first slot frame (311) whose left side is fastened to the left side of the inner wall of the cable compartment (3), a cross bar (312) locked and installed on the front side of the first slot frame (311), a second slot frame (313) locked and installed on the right side of the rear part of the cross bar (312), and a wire clamping assembly (314) connected to the front side of the cross bar (312), and the right side of the second slot frame (313) is fastened to the right side of the inner wall of the cable compartment (3).

8. A 12kV high voltage environmental protection cabinet according to claim 7, characterized in that: Three of the line clamping assemblies (314) are provided and are equidistantly distributed on the front side of the crossbar (312).

9. A 12kV high voltage environmental protection cabinet according to claim 7, characterized in that: The wire clamping assembly (314) comprises a bottom plate (3141) connected to the cross bar (312) at the rear side, a support groove block (3142) fixed to the rear side of the top of the bottom plate (3141), a rectangular block (3143) arranged at the front side of the support groove block (3142), six clamping columns (3144) penetrating and sliding inside the rectangular block (3143), an internal threaded vertical block (3145) fixedly connected to the front side of the top of the bottom plate (3141), a threaded rotating rod (3146) threadedly connected to the inside of the internal threaded vertical block (3145), a slider (3147) rotatably connected to the rear end of the threaded rotating rod (3146), and a plurality of sliders (3147) rotatably connected to the rear ends of the sliders (3147). A first rotating frame (3148) and a second rotating frame (3149) on the left and right sides, a first rotating block (31410) rotatably connected to the left rear portion of the first rotating frame (3148), and a second rotating block (31411) rotatably connected to the right rear portion of the second rotating frame (3149), the bottom of the rectangular block (3143) is fixed to the bottom film (3141), the bottom of the slider (3147) is slidably connected to the bottom film (3141), and the rear side of the first rotating block (31410), the right rear portion of the first rotating frame (3148), the left rear portion of the second rotating frame (3149), and the rear side of the second rotating block (31411) are respectively connected to six clamping columns (3144).

10. A 12kV high voltage environmental protection cabinet according to claim 9, characterized in that: A second spring (31441) is provided on the outer surface of the clamping column (3144), and the rear side of the second spring (31441) is in contact with the rectangular block (3143). Six grooves are provided on the front side of the support groove block (3142), and the positions of the six grooves correspond to the positions of the six clamping columns (3144) respectively.

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