High-voltage circuit safety insulation cabinet body

Abstract

The invention relates to the field of high-voltage electric cabinets, in particular to a high-voltage circuit safety insulation cabinet body which comprises an insulation cabinet shell, a ventilation groove is formed in the insulation cabinet shell, an air injection device is installed in the insulation cabinet shell, a baffle is arranged in the insulation cabinet shell, and a limiting frame is fixedly installed on the inner wall of the insulation cabinet shell. The limiting frame is located on one side of the ventilation groove, the baffle is connected to the limiting frame in a sliding mode, and the ventilation groove is opened or closed when the baffle slides to a set position. According to the invention, the gas device sprays carbon dioxide to extinguish fire or cool the interior of the insulation cabinet, and meanwhile, the pushing assembly pushes the pushing block to move to cover the ventilation slot, so that the insulation cabinet shell is integrally sealed, comburent in the insulation cabinet shell cannot be in contact with oxygen, fire behavior cannot be increased, and after-combustion cannot be generated; and the two parts cooperate with each other to extinguish the fire in the insulation cabinet, so that reignition of the fire is avoided, and potential safety hazards caused by fire diffusion are further prevented.

Description

Technical Field

[0001] The present invention relates to the field of high-voltage electric cabinets, in particular to a high-voltage circuit safety insulation cabinet. Background Art

[0002] High-voltage electrical cabinets are key equipment for distributing, controlling and protecting electrical energy in power systems. They include circuit breakers, disconnectors, protective relays, busbars, instruments and indicator lights, etc. High-voltage cabinets need to prevent overheating of circuit breakers, disconnectors, protective relays or busbars due to long-term overload operation of equipment, thereby igniting insulation materials and causing fires inside the cabinets. At the same time, aging, damage or improper design of insulation materials in the circuits may cause phase-to-phase or ground short circuits, generate high temperatures and arcs, and cause fires. Once a fire occurs, staff are required to open the doors of the high-voltage electrical cabinets to extinguish the fire. However, since most electrical cabinets are located in remote areas, by the time staff arrive, the fire will not only burn the high-voltage electrical cabinets, but will also spread to other locations, causing the fire to spread further, leading to This causes safety accidents to the staff who come to rescue, so the patent application with patent publication number CN117878729A provides an automatic fire extinguishing distribution cabinet, which provides a powder storage cylinder on the top of the cabinet. When a fire occurs, the fire extinguishing material in the powder storage cylinder is sprinkled inside the cabinet to extinguish the fire. When extinguishing the fire, it is necessary to extinguish the open flame by spraying the fire extinguishing material. However, when designing the high-voltage electrical cabinet, in order to prevent the temperature inside the high-voltage electrical cabinet from being too high, the high-voltage electrical cabinet needs to exhaust and cool the high-temperature components in the cabinet through ventilation holes and exhaust equipment. After the fire extinguishing material in the powder storage cylinder is sprinkled inside the cabinet to extinguish the fire, the extinguished flame may still reignite in the atmospheric environment, and the reignited flame will still cause damage to the scene, resulting in the fire being unable to be extinguished and there is still a safety hazard at the scene.

[0003] A high-voltage circuit safety insulation cabinet is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-voltage circuit safety insulation cabinet to solve the problem that safety accidents are prone to occur during manual rescue after a fire occurs in the electrical cabinet, and at the same time solve the problem that the fire area is prone to re-ignition in a ventilated environment after the fire is extinguished.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A high-voltage circuit safety insulation cabinet comprises an insulation cabinet shell, a ventilation slot is provided on the insulation cabinet shell, an air jet device is installed in the insulation cabinet shell, a baffle is provided in the insulation cabinet shell, a limit frame is fixedly installed on the inner wall of the insulation cabinet shell, the limit frame is located on one side of the ventilation slot, the baffle is slidably connected to the limit frame, and the ventilation slot is opened or closed when the baffle slides to a set position, a push block is installed on the baffle, a push assembly is installed in the insulation cabinet shell, the push assembly is connected to the top of the push block, a sealing assembly is installed on the baffle, and the sealing assembly is connected to the bottom of the push block. When the temperature in the insulation cabinet shell continues to rise and reaches a set value, the push assembly pushes the push block to move, and after the push block pushes the baffle to move to the specified position, it continues to push the sealing assembly to trigger.

[0007] Because the insulating cabinet needs to prevent the wires or components from overheating and igniting the insulating materials due to long-term overload operation of the equipment, ventilation slots are needed to ventilate and dissipate heat for the internal circuit components to prevent the circuit from burning due to excessive temperature. However, the burning of the circuit insulation cabinet is not only caused by long-term operation. Aging, damage or improper design of the insulating materials in the circuit may cause short circuits between phases or to the ground, generating high temperatures and electric arcs, causing fires. At the same time, a humid environment may cause the performance of the insulating material to deteriorate, increasing the risk of short circuits, making the insulating cabinet have a certain probability of fire. In the present invention, when the temperature in the insulating cabinet continues to rise and reaches the set value, the pushing component on one side will be triggered immediately, and the baffle will be pushed down by pushing the pushing block. Of course, by setting the baffle at the top It can be moved downward by additional gravity, which can effectively ensure that the baffle can be stably moved into place, avoid failure of the pushing component to push the baffle to move, and seal the insulating cabinet shell as a whole, so that the burning materials inside the insulating cabinet cannot be exposed to oxygen and cannot increase the fire. At the same time, carbon dioxide is sprayed out through the jet device to extinguish the fire or cool the inside of the insulating cabinet, thereby cooperating with the sealing of the insulating cabinet to extinguish the fire. Of course, a one-way valve is installed on one side, and the non-carbon dioxide gas inside is discharged by the continuous influx of carbon dioxide to avoid internal gas expansion and cause expansion and damage to the insulating cabinet. By sealing the insulating cabinet and spraying carbon dioxide at the same time, the fire in the insulating cabinet is extinguished to avoid the re-ignition of the fire, further preventing the spread of fire and causing safety hazards.

[0008] Preferably, the pushing assembly includes a cylinder, a sliding block, a first compression spring, a round rod, a first ball, an unlocking ring, and a second ball. The pushing assembly includes a cylinder fixedly mounted on the inner wall of the insulating cabinet shell, a sliding block fixedly mounted in the cylinder, a first compression spring abutting against the sliding block is provided in the cylinder, a round rod is fixedly mounted on the sliding block, one end of the round rod extends outside the cylinder and is rotatably connected to the pushing block, an annular groove is provided on the round rod, the annular groove is perpendicular to the central axis of the round rod, and the round rod is provided with a plurality of long grooves connected to the annular groove The two long grooves are symmetrically arranged with each other, and the long grooves are arranged in a Z shape as a whole. A circular groove is provided on the cylinder, and a first ball is connected to the circular groove in a rolling manner. The first ball rolls on the long groove. An unlocking ring is sleeved on the round rod, and a support frame is fixedly installed on the inner wall of the insulating cabinet shell. The unlocking ring is rotatably connected to the support frame. Two symmetrically arranged second balls are connected to the unlocking ring in a rolling manner. When the round rod is retracted into the cylinder, the second ball rolls in the circular groove. A trigger is installed on the inner wall of the insulating cabinet shell, and the trigger is connected to the unlocking ring.

[0009] When a flame appears in the insulating cabinet and a fire occurs, the pushing component will be triggered and push the baffle down. By pushing the baffle down, the ventilation slot is closed to prevent the insulating cabinet from being ventilated through the ventilation slot, thereby reducing the oxygen content in the insulating cabinet. When in use, the trigger pushes the unlocking ring to rotate, and the rotating unlocking ring pushes the second ball installed on the unlocking ring to move, so that the second ball continuously rolls and rotates in the circular groove. When it rotates to the specified position, the second ball enters the long groove connected to the circular groove. At this time, the first compression spring arranged in the cylinder will trigger the sliding block to move, and the sliding block pushes the round rod and the connected baffle to move downward. Of course, by setting the ball and the long groove, When unlocking the first compression spring, it can be more stable, avoiding the insulating cabinet from shaking or accidentally being triggered after being hit. At the same time, because the round rod needs to push the baffle to move a long distance, the round rod will produce eccentric shaking, and the set ball and long groove can further limit the movement of the round rod to ensure that the round rod can move stably. Of course, the long groove is arranged in a Z shape as a whole, so that when the first ball rolls to the turning point of the Z-shaped long groove, it will push the round rod to rotate, and push the baffle to move down, so that the baffle blocks the ventilation slot below, and the insulating cabinet is sealed to prevent the fire from re-igniting, further preventing the spread of fire and causing safety hazards.

[0010] Preferably, the trigger member includes a gear ring, a rack rack, a prism, a support frame, a pressing plate, a spring plate, a rubber film, and a glass column. The unlocking ring is sleeved with a gear ring, and one side of the gear ring is provided with a rack rack meshing with the gear ring. A prism is fixedly mounted on the rack rack, and a support frame is fixedly mounted on the inner wall of the insulating cabinet shell. The prism is slidably connected to the support frame. A pressing plate is fixedly mounted on the prism, and one side of the pressing plate abuts against the spring plate. A groove is provided on the rack rack, and a rubber film is fixedly mounted in the groove. A glass column is fixedly mounted on the inner wall of the insulating cabinet shell, and one end of the glass column abuts against the rubber film. The glass column is filled with a thermosensitive liquid.

[0011] When in use, when the temperature in the insulating cabinet reaches the set value, the thermosensitive liquid in the glass column will expand due to the heat, and the expansion will cause the glass column to break. Because the spring plate will push the pressing plate to squeeze, the pressing plate will be subjected to the pressure of movement, and the pressure generated will be dispersed to the rack through the prism, and one side of the rack will abut against the glass column. When the glass column breaks, the squeezing force generated by the spring plate will push the rack to move, and the moving rack will mesh with the gear ring, so that the gear ring can drive the unlocking ring to rotate, releasing the first compression spring. At the same time, because the insulating cabinet will shake to a certain extent during transportation or daily use, the shaking will cause the fixed The glass column on the insulating cabinet will also shake. However, the rack frame that is in contact with the other end of the glass column will not vibrate at the same frequency as the insulating cabinet because it slides on the support frame, causing the glass column to not vibrate at the same frequency as the insulating cabinet, resulting in different amplitudes of shaking at both ends of the glass column, which makes the glass column prone to cracking. By providing a rubber film at one end, one end of the glass column can be flexibly contacted with the rubber film to offset the impact of the shaking of the insulating cabinet on the glass column, avoid false touch of the trigger, ensure that the push component can be used for a long time, avoid the baffle falling to seal the insulating cabinet before a fire occurs, and ensure that the push component can push the baffle down when a fire occurs, preventing the fire from spreading and causing safety hazards.

[0012] Preferably, the sealing assembly includes an annular airbag, a ceramic gasket, a piston cylinder, an external thread, and an internal thread block. A plurality of annular grooves are provided on the baffle, an annular airbag is fixedly installed in the annular groove, a piston cylinder is fixedly installed on the baffle, a pipe connected to the annular airbag is installed on the piston cylinder, an external thread is provided on the movable end of the piston cylinder, an internal thread block is fixedly installed on the baffle, and when the movable end of the piston cylinder is in an extended state, the external thread and the internal thread block cooperate with each other.

[0013] Because the heavy baffle needs to slide during the specific use process, a certain gap will be directly generated between the baffle and the ventilation slot, resulting in the inability to fully seal the insulation cabinet. Therefore, the gap connection between the insulation cabinet and the baffle needs to be completely sealed. Because the baffle needs to be moved into place before the sealing assembly can be driven to operate, the round rod needs to push the baffle down first, and then push the movable end of the piston cylinder to compress. Specifically, when the first ball rolls to the turning point of the Z-shaped long groove, it will push the round rod to rotate. Before the first ball moves to the turning point of the Z-shaped long groove, it will push the baffle into place. When the round rod rotates, it will drive the external thread on the movable end of the piston cylinder to rotate, because the baffle is fixed with an internal thread block. Therefore, at this time, the rotation of the external thread releases the relative fixed position between the movable end of the piston cylinder and the baffle, so that the round rod continues to push the movable end of the piston cylinder to contract. By squeezing the piston cylinder, the liquid in the piston cylinder can flow into the annular airbag through the pipe, causing the annular airbag to expand, blocking the gap between the baffle and the inner wall of the insulating cabinet shell. At the same time, because the heat generated in the insulating cabinet will be transferred to the annular airbag through the heat conduction of the material, causing the annular airbag to rupture, the annular airbag can be filled with liquid to ensure that the heat cannot damage the airbag, thereby ensuring that the sealing component can operate normally, avoiding the failure to seal the insulating cabinet and causing the fire to reignite, and further preventing the safety hazards of fire spread.

[0014] Preferably, two symmetrically arranged fixing frames are fixedly mounted on the baffle, and the fixing frames are located on both sides of the piston cylinder. A locking block is rotatably connected to the fixing frame, and a torsion spring is installed on the locking block. When the telescopic end of the piston cylinder is in a compressed state, the locking block abuts against the pushing block.

[0015] It should be noted that after the first compression spring is released, the first compression spring can be easily compressed, and the first compression spring is connected to the round rod, so that the movement of the baffle and the contraction of the piston cylinder are controlled by the first compression spring. When the insulating cabinet vibrates, the first compression spring is likely to cause the annular airbag to contract, causing the sealing assembly to be unable to operate, so it is necessary to limit the movable end of the compressed piston cylinder to prevent the movable end of the piston cylinder from moving. Therefore, after the round rod pushes the pushing block to the specified position, the pushing block will contact the locking block and push the locking block to swing onto the pushing block, locking the movable end of the piston cylinder to prevent the movable end of the piston cylinder from contracting. Of course, it can also ensure the sealing state of the sealing assembly, avoid the fire from re-igniting due to the inability to seal in the insulating cabinet, and further prevent the safety hazards of fire spread.

[0016] Preferably, one end of the spring plate is fixedly mounted on a rotating shaft of a cabinet door of the insulating cabinet housing, and when the cabinet door of the insulating cabinet housing is closed, the other end of the spring plate abuts against the pressing plate.

[0017] Of course, because the trigger is relatively sensitive during use, it is easy to be accidentally touched during transportation and loading and unloading. It is ensured that the trigger can be operated only after the insulation cabinet is installed, and kept locked before installation to prevent the trigger from failing to operate normally after installation. Therefore, by installing the other end of the spring plate on the rotating shaft of the insulation cabinet shell door, when the insulation cabinet shell door is closed, the other end of the spring plate can squeeze the pressing plate, so that the trigger can be operated.

[0018] Preferably, a plurality of rubber rings are provided between the unlocking ring and the round rod, the plurality of rubber rings are fixedly mounted on the unlocking ring, and the contact portion between the rubber ring and the round rod is blade-shaped.

[0019] During operation, the first compression spring has a strong elastic force, which will quickly push the round rod to move. Therefore, in order to avoid the baffle from causing damage to itself due to rapid movement, the speed of the round rod needs to be reduced. By arranging multiple rubber rings between the unlocking ring and the round rod, the friction force can be increased by the rubber ring when the unlocking ring slides on the round rod. When the unlocking ring rotates on the round rod, the contact part of the blade-shaped rubber ring will only generate extremely small friction force, ensuring that the rotation of the unlocking ring is not affected.

[0020] Preferably, the baffle is made of ceramic material, and a ceramic gasket is arranged around the periphery of the ventilation slot. The ceramic gasket is fixedly installed on the inner wall of the insulating cabinet shell. The baffle is made of ceramic material, and further insulation is performed by ceramic material to prevent high temperature from affecting the annular airbag.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Carbon dioxide is sprayed out through the jet device to extinguish the fire or cool down the inside of the insulation cabinet. At the same time, the push block of the push component moves to cover the ventilation slot, thereby sealing the insulation cabinet shell as a whole, so that the burning materials inside the insulation cabinet shell cannot come into contact with oxygen and cannot increase the fire and re-ignite. The two cooperate with each other to extinguish the fire inside the insulation cabinet, avoid the re-ignition of the fire, and further prevent the safety hazards caused by the spread of the fire.

[0023] 2. Ensure that the trigger can operate after the insulation cabinet is installed to avoid the trigger failing to operate normally after installation. Therefore, by installing the other end of the spring plate on the rotating shaft of the insulation cabinet door, when the insulation cabinet door is closed, the other end of the spring plate can squeeze the pressing plate to enable the trigger to operate, further ensuring that the push component can operate stably, and indirectly preventing safety hazards caused by the spread of fire.

[0024] 3. By pushing the component to squeeze the piston cylinder, the liquid in the piston cylinder can flow into the annular airbag through the pipe, causing the annular airbag to expand, blocking the gap between the baffle and the inner wall of the insulation cabinet shell, so that the gap connection between the insulation cabinet and the baffle can be completely sealed, preventing oxygen from entering the insulation cabinet through the connection, preventing the extinguished flame inside the insulation cabinet from reigniting, and complete sealing can further ensure that the flame inside the insulation cabinet will not spread, avoiding safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0027] Figure 3 Schematic diagram of the internal structure of the cylinder in the present invention;

[0028] Figure 4 Schematic diagram of the cross-sectional structure of the round rod in the present invention;

[0029] Figure 5 Schematic diagram of the swing of the spring plate in the present invention;

[0030] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at B in the middle;

[0031] Figure 7 Schematic diagram of the structure of the annular airbag in the present invention;

[0032] Figure 8 Schematic diagram of the structure of the ceramic gasket in the present invention.

[0033] In the figure: 1. Insulation cabinet shell; 101. One-way valve; 2. Ventilation slot; 3. Cylinder; 4. Limiting frame; 5. Baffle; 7. Round rod; 8. Long slot; 9. Unlocking ring; 10. Gear ring; 11. Rack frame; 12. Support frame; 13. Glass column; 14. Pressing plate; 15. Prism; 16. Spring plate; 17. Piston cylinder; 18. Internal thread block; 19. First compression spring; 20. Rotating frame; 21. Annular groove; 22. Pushing block; 23. Sliding block; 24. First ball bearing; 25. Second ball bearing; 26. External thread; 27. Groove; 28. Rubber film; 29. ​​Rubber ring; 30. Annular groove; 31. Annular airbag; 32. Ceramic gasket; 33. Fixing frame; 34. Locking block. DETAILED DESCRIPTION

[0034] See also Figures 1 to 8 The present invention provides a high-voltage circuit safety insulation cabinet, and the technical solution is as follows:

[0035] A high-voltage circuit safety insulation cabinet includes an insulation cabinet shell 1, a ventilation slot 2 is provided on the insulation cabinet shell 1, an air injection device is installed in the insulation cabinet shell 1, a one-way valve 101 is installed on the insulation cabinet shell, and the one-way valve 101 is arranged below the insulation cabinet. A baffle 5 is provided in the insulation cabinet shell 1, and a limit frame 4 is fixedly installed on the inner wall of the insulation cabinet shell 1. The limit frame 4 is located on one side of the ventilation slot 2. The baffle 5 is slidably connected to the limit frame 4. When the baffle 5 slides to a set position, the ventilation slot 2 is opened or closed. A push block 22 is installed on the baffle 5.

[0036] The inner wall of the insulating cabinet shell 1 is fixedly mounted with a cylinder 3, a sliding block 23 is fixedly mounted in the cylinder 3, a first compression spring 19 is provided in the cylinder 3 to abut against the sliding block 23, a round rod 7 is fixedly mounted on the sliding block 23, one end of the round rod 7 extends outside the cylinder 3 and is rotatably connected to the push block 22, a circular groove 21 is provided on the round rod 7, the circular groove 21 is perpendicular to the central axis of the round rod 7, the round rod 7 is provided with a plurality of long grooves 8 connected to the circular groove 21, and the two long grooves 8 are connected to each other. The cylinder 3 is provided with a circular groove, in which a first ball 24 is connected for rolling. The first ball 24 rolls on the long groove 8. An unlocking ring 9 is sleeved on the round rod 7. A rotating frame 20 is fixedly mounted on the inner wall of the insulating cabinet shell 1. The unlocking ring 9 is rotatably connected to the rotating frame 20. Two symmetrically arranged second balls 25 are connected for rolling in the unlocking ring 9. When the round rod 7 is retracted into the cylinder 3, the second ball 25 rolls in the annular groove 21 to unlock the cylinder 3. A plurality of rubber rings 29 are provided between the ring 9 and the round rod 7. The plurality of rubber rings 29 are fixedly mounted on the unlocking ring 9, and the contact portion between the rubber ring 29 and the round rod 7 is blade-shaped. A gear ring 10 is sleeved on the unlocking ring 9. A rack rack 11 meshing with the gear ring 10 is provided on one side of the gear ring 10. A prism 15 is fixedly mounted on the rack rack 11. A support frame 12 is fixedly mounted on the inner wall of the insulating cabinet housing 1. The prism 15 is slidably connected to the support frame 12. A pressing plate is fixedly mounted on the prism 15. 14. One side of the pressing plate 14 is in contact with a spring plate 16. One end of the spring plate 16 is fixedly mounted on the rotating shaft of the cabinet door of the insulating cabinet housing 1. When the cabinet door of the insulating cabinet housing 1 is closed, the other end of the spring plate 16 is in contact with the pressing plate 14. A groove 27 is provided on the rack frame 11. A rubber film 28 is fixedly mounted in the groove 27. A glass column 13 is fixedly mounted on the inner wall of the insulating cabinet housing 1. One end of the glass column 13 is in contact with the rubber film 28. The glass column 13 is filled with a thermosensitive liquid.

[0037] A plurality of annular grooves 30 are provided on the baffle 5, and an annular airbag 31 is fixedly installed in the annular groove 30. A piston cylinder 17 is fixedly installed on the baffle 5, and a pipe connected to the annular airbag 31 is installed on the piston cylinder 17. An external thread 26 is provided on the movable end of the piston cylinder 17, and an internal thread block 18 is fixedly installed on the baffle 5. When the movable end of the piston cylinder 17 is in an extended state, the external thread 26 and the internal thread block 18 cooperate with each other. The baffle 5 is made of ceramic material, and a ceramic gasket 32 ​​is provided on the periphery of the ventilation groove 2. The ceramic gasket 32 ​​is fixedly installed on the inner wall of the insulating cabinet shell 1.

[0038] Two symmetrically arranged fixing frames 33 are fixedly mounted on the baffle 5. The fixing frames 33 are located on both sides of the piston cylinder 17. A locking block 34 is rotatably connected to the fixing frame 33. A torsion spring is installed on the locking block 34. When the telescopic end of the piston cylinder 17 is in a compressed state, the locking block 34 abuts against the pushing block 22.

[0039] See also Figure 1 、 Figure 5 and Figure 6 When using it, you need to install the insulation cabinet first and close the cabinet door of the insulation cabinet. It is easy to accidentally touch it during transportation and loading and unloading. Make sure that the trigger can be operated after the insulation cabinet is installed, and the trigger is kept in a locked state before installation to avoid the trigger not being able to operate normally after installation. Therefore, by installing one end of the spring plate 16 on the cabinet door rotation shaft of the insulation cabinet shell 1, when the cabinet door of the insulation cabinet shell 1 is closed, the other end of the spring plate 16 can squeeze the pressing plate 14 to enable the trigger to operate. At the same time, because the insulation cabinet is in transportation or daily use, A certain amplitude of shaking will be generated during the process, and the shaking will cause the glass column 13 fixed on the inner wall of the insulating cabinet shell 1 to shake. However, the rack frame 11 that is in contact with the other end of the glass column will not vibrate at the same frequency as the insulating cabinet because of the sliding connection on the support frame 12, so that the two ends of the glass column 13 will have different amplitudes of shaking, which makes the glass column 13 prone to cracking. By arranging a rubber film 28 at one end, one end of the glass column 13 is in flexible contact with the rubber film 28, thereby offsetting the impact of the shaking of the insulating cabinet on the glass column 13.

[0040] See also Figure 1 、 Figure 2 and Figure 6When a fire occurs in the insulating cabinet, the temperature inside the insulating cabinet continues to rise. When the temperature inside the insulating cabinet reaches the set value, the thermosensitive liquid in the glass column 13 expands due to the heat. The expansion force generated by the thermosensitive liquid causes the glass column 13 to break. Because the spring plate 16 pushes the pressing plate 14 to squeeze, the pressing plate 14 is subjected to downward pressure, and the pressure generated is dispersed to the rack 11 through the prism 15. One side of the rack 11 abuts against the glass column 13. When the glass column 13 breaks, the squeezing force generated by the spring plate 16 pushes the rack 11 to move. The moving rack 11 engages with the gear ring 10, so that the gear ring 10 can drive the unlocking ring 9 to rotate.

[0041] See also Figure 3 、 Figure 4 and Figure 7 The rotating unlocking ring 9 pushes the second ball 25 installed on the unlocking ring 9 to move, so that the second ball 25 continuously rolls and rotates in the annular groove 21. When the second ball 25 rotates to the connection point of the annular groove 21 and the long groove 8, the second ball 25 will enter the long groove 8 connected to the annular groove 21. At this time, the first compression spring 19 arranged in the cylinder 3 will trigger the sliding block 23 to move, and the sliding block 23 pushes the round rod 7 and the connected baffle 5 to move downward. Of course, by setting the second ball 25 and the long groove 8, When locking the first compression spring 19, it can be more stable, avoiding accidental contact after the insulating cabinet shakes or is hit. At the same time, because the round rod 7 needs to push the baffle 5 to move a long distance, the round rod 7 will produce eccentric shaking, and the second ball 25 and the long groove 8 can further limit the movement of the round rod 7 to ensure that the round rod 7 can move stably. Of course, the long groove 8 is arranged in a Z shape as a whole, so that when the first ball 24 rolls to the turning point of the Z-shaped long groove 8, it will push the round rod 7 to rotate.

[0042] See also Figure 1 and Figure 4 At the same time, when moving, in order to prevent the baffle 5 from causing damage to itself due to rapid movement, it is necessary to reduce the speed of the round rod 7. By arranging multiple rubber rings 29 between the unlocking ring 9 and the round rod 7, the friction force can be increased by the rubber ring 29 when the unlocking ring 9 slides on the round rod 7. When the unlocking ring 9 rotates on the round rod 7, the blade-shaped contact part of the rubber ring 29 only reduces the contact area between the rubber ring 29 and the unlocking ring 9, thereby reducing the friction force between the rubber ring 29 and the unlocking ring 9, ensuring that the rotation of the unlocking ring 9 is not affected.

[0043] See also Figure 3 、 Figure 7 and Figure 8When the round rod 7 rotates, it will drive the external thread 26 on the movable end of the piston cylinder 17 to rotate. Because the internal thread block 18 is fixedly installed on the baffle 5, the rotation of the external thread 26 at this time releases the relative fixed position between the movable end of the piston cylinder 17 and the baffle 5, so that the round rod 7 continues to push the movable end of the piston cylinder 17 to contract. By squeezing the piston cylinder 17, the liquid in the piston cylinder 17 can flow into the annular airbag 31 through the pipeline, causing the annular airbag 31 to expand, blocking the gap between the baffle 5 and the inner wall of the insulating cabinet shell 1.

[0044] See also Figure 3 After the round rod 7 pushes the pushing block 22 to move to the specified position, the pushing block 22 will contact the locking block 34 and push the locking block 34 to swing onto the pushing block 22, locking the movable end of the piston cylinder 17 to prevent the movable end of the piston cylinder 17 from shrinking, and of course, it can also ensure the sealing state of the sealing assembly.

[0045] A specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiment described above. For those skilled in the art, various changes, modifications, substitutions, and variations to these embodiments without departing from the principles and ideas of the present invention should still fall within the scope of protection of the present invention.

Claims

1. A high-voltage circuit safety insulation cabinet, comprising an insulation cabinet shell (1), wherein the insulation cabinet shell (1) is provided with ventilation slots (2), characterized in that: An air injection device is installed in the insulating shell, a one-way valve (101) is installed on the insulating shell, and the one-way valve (101) is arranged below the insulating cabinet shell (1). A baffle (5) is provided in the insulating cabinet shell (1), and a limit frame (4) is fixedly installed on the inner wall of the insulating cabinet shell (1). The limit frame (4) is located on one side of the ventilation slot (2). The baffle (5) is slidably connected to the limit frame (4). When the baffle (5) slides to a set position, the ventilation slot (2) is opened or closed. A pushing block (22) is installed on the baffle (5), a pushing assembly is installed in the insulating cabinet housing (1), the pushing assembly is connected to the top of the pushing block (22), a sealing assembly is installed on the baffle (5), and the sealing assembly is connected to the bottom of the pushing block (22); when the temperature in the insulating cabinet housing (1) continues to rise and reaches a set value, the pushing assembly pushes the pushing block (22) to move, and after the pushing block (22) pushes the baffle (5) to move to a specified position, it continues to push the sealing assembly to trigger.

2. A high-voltage circuit safety insulation cabinet according to claim 1, characterized in that: The pushing assembly comprises a cylinder (3), a sliding block (23), a first compression spring (19), a round rod (7), a first ball (24), an unlocking ring (9) and a second ball (25), wherein the pushing assembly comprises a cylinder (3) fixedly mounted on the inner wall of the insulating cabinet housing (1), a sliding block (23) fixedly mounted in the cylinder (3), a first compression spring (19) abutting against the sliding block (23) provided in the cylinder (3), a round rod (7) fixedly mounted on the sliding block (23), one end of the round rod (7) extending outside the cylinder (3) and rotatably connected to the pushing block (22), an annular groove (21) provided on the round rod (7), the annular groove (21) being arranged perpendicular to the central axis of the round rod (7), and a plurality of springs corresponding to the annular groove (21) provided on the round rod (7) 1) connected long grooves (8), the two long grooves (8) are symmetrically arranged, and the long grooves (8) are arranged in a Z-shape as a whole. The cylinder (3) is provided with a circular groove, and a first ball (24) is connected in a rolling manner in the circular groove. The first ball (24) rolls on the long groove (8). An unlocking ring (9) is sleeved on the round rod (7). A rotating frame (20) is fixedly installed on the inner wall of the insulating cabinet shell (1). The unlocking ring (9) is rotatably connected to the rotating frame (20). Two symmetrically arranged second balls (25) are connected in a rolling manner in the unlocking ring (9). When the round rod (7) is retracted into the cylinder (3), the second balls (25) roll in the circular groove (21). A triggering member is installed on the inner wall of the insulating cabinet shell (1), and the triggering member is connected to the unlocking ring (9).

3. A high-voltage circuit safety insulation cabinet according to claim 2, characterized in that: The triggering member comprises a gear ring (10), a rack frame (11), a prism (15), a support frame (12), a pressing plate (14), a spring plate (16), a rubber film (28) and a glass column (13); the unlocking ring (9) is provided with a gear ring (10); a rack frame (11) meshed with the gear ring (10) is provided on one side of the gear ring (10); a prism (15) is fixedly mounted on the rack frame (11); a support frame (12) is fixedly mounted on the inner wall of the insulating cabinet housing (1); the prism (15) is fixedly mounted on the inner wall of the insulating cabinet housing (1); and the prism (15) is fixedly mounted on the inner wall of the insulating cabinet housing (1). 5) is slidably connected to the support frame (12), a pressing plate (14) is fixedly mounted on the prism (15), one side of the pressing plate (14) is in contact with a spring plate (16), a groove (27) is provided on the rack frame (11), a rubber film (28) is fixedly mounted in the groove (27), a glass column (13) is fixedly mounted on the inner wall of the insulating cabinet housing (1), one end of the glass column (13) is in contact with the rubber film (28), and the glass column (13) is filled with a thermosensitive liquid.

4. A high-voltage circuit safety insulation cabinet according to claim 3, characterized in that: The sealing assembly comprises an annular airbag (31), a ceramic gasket (32), a piston cylinder (17), an external thread (26) and an internal thread block (18); a plurality of annular grooves (30) are provided on the baffle (5); an annular airbag (31) is fixedly installed in the annular groove (30); a piston cylinder (17) is fixedly installed on the baffle (5); a pipe connected to the annular airbag (31) is installed on the piston cylinder (17); an external thread (26) is provided on the movable end of the piston cylinder (17); an internal thread block (18) is fixedly installed on the baffle (5); when the movable end of the piston cylinder (17) is in an extended state, the external thread (26) and the internal thread block (18) cooperate with each other.

5. A high-voltage circuit safety insulation cabinet according to claim 4, characterized in that: Two symmetrically arranged fixing frames (33) are fixedly mounted on the baffle (5). The fixing frames (33) are located on both sides of the piston cylinder (17). A locking block (34) is rotatably connected to the fixing frame (33). A torsion spring is mounted on the locking block (34). When the telescopic end of the piston cylinder (17) is in a compressed state, the locking block (34) abuts against the pushing block (22).

6. A high-voltage circuit safety insulation cabinet according to claim 3, characterized in that: One end of the spring plate (16) is fixedly mounted on the cabinet door rotating shaft of the insulating cabinet housing (1); when the cabinet door of the insulating cabinet housing (1) is closed, the other end of the spring plate (16) abuts against the pressing plate (14).

7. A high-voltage circuit safety insulation cabinet according to claim 2, characterized in that: A plurality of rubber rings (29) are provided between the unlocking ring (9) and the round rod (7). The plurality of rubber rings (29) are fixedly mounted on the unlocking ring (9), and the contact portion between the rubber rings (29) and the round rod (7) is in the shape of a knife edge.

8. The high-voltage circuit safety insulation cabinet according to claim 1, characterized in that: The baffle (5) is made of ceramic material, and a ceramic gasket (32) is provided on the periphery of the ventilation slot (2). The ceramic gasket (32) is fixedly mounted on the inner wall of the insulating cabinet shell (1).

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