Explosion-proof power distribution cabinet with pressure relief structure

Abstract

The utility model relates to a power distribution cabinet technical field, concretely is an explosion -proof power distribution cabinet with pressure -relief structure, explosion -proof power distribution cabinet, pressure -relief box, the pressure -relief pipe outer end fixed cover of explosion -proof power distribution cabinet side wall is equipped with pressure -relief box, and the inside wall of pressure -relief box is connected and is provided with two guide columns, and the push -plate is movably connected with the guide column, the push -plate side wall is connected and is provided with the mounting rod, and the piston assembly is set up on the mounting rod, through the mounting disc and the ring socket joint, make the sealing piston and sealing ring pad combination installation, after the mounting rod and fixed frame are inserted, remove L shape and push the embedded bead to move to the movable groove end, until the embedded bead and the embedded groove interlock, guarantee the mounting rod and fixed frame insertion stable, the insertion post of the bolt is inserted into the L shape groove and limits L shape and pushes the embedded bead to move, spring reset pushes the push -plate to move, make the sealing piston insert into the pressure -relief pipe, and the sealing ring pad blocks the pressure -relief pipe pipe orifice, simple operation, realize the sealing piston and sealing ring pad wear and can be conveniently replaced alone.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet technology, specifically an explosion-proof power distribution cabinet with a pressure relief structure. Background Technology

[0002] Chinese patent document CN216904017U discloses an automatic pressure relief mechanism for a power distribution cabinet. This mechanism includes a cabinet body, a busbar compartment, a connecting pipe, a pressure relief box, and a pressure relief assembly. The busbar compartment is mounted on the cabinet body, the connecting pipe is fixedly installed on the busbar compartment and communicates with it, the pressure relief box is fixedly installed on the end of the connecting pipe away from the busbar compartment and communicates with it, and the pressure relief assembly is mounted on the pressure relief box. The pressure relief assembly includes a sealing sliding piston, a sealing elastic ball, and a first connecting block. This automatic pressure relief mechanism enhances the pressure relief effect, enabling rapid pressure relief, and also alerts nearby personnel to stay away from the cabinet, thus preventing harm to personnel during the pressure relief process.

[0003] However, in the above-mentioned solutions and existing technologies, a pressure relief pipe is installed on the explosion-proof distribution cabinet, and a pressure relief box is installed at the outer end of the pressure relief pipe. Inside the pressure relief box, a compressed spring pushes a push plate to move, causing a sealing piston on the push plate to block the pressure relief pipe opening. The increased air pressure inside the explosion-proof distribution cabinet pushes the sealing piston to move and expose the pressure relief pipe opening for pressure relief. During use, the sealing piston is usually integrated with the push plate, which makes it inconvenient to replace the sealing piston separately after it wears out. Improvements and optimizations are needed.

[0004] Therefore, this utility model proposes an explosion-proof power distribution cabinet with a pressure relief structure to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide an explosion-proof power distribution cabinet with a pressure relief structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an explosion-proof power distribution cabinet with a pressure relief structure, comprising: an explosion-proof power distribution cabinet and a pressure relief box; the pressure relief box is fixedly sleeved on the outer end of the pressure relief pipe on the side wall of the explosion-proof power distribution cabinet, a door is provided at the front end of the pressure relief box, a pressure relief hole is provided on the bottom wall of the pressure relief box, two guide columns are connected and arranged on the inner side wall of the pressure relief box, springs are sleeved on the guide columns, and a push plate is movably sleeved with the guide columns; an installation rod is connected and arranged on the side wall of the push plate, and a piston assembly is provided on the installation rod.

[0007] Preferably, the piston assembly includes a mounting plate, a sealing piston, a sealing ring gasket, a retaining plate, an L-shaped lever, and a pin. The sealing piston is connected to the side wall of the mounting plate and is movably inserted into the pressure relief pipe. The side wall of the mounting plate has symmetrically opened positioning grooves, and the mounting plate is fitted with a ring.

[0008] Preferably, positioning blocks are symmetrically connected on the inner wall of the ring, the positioning blocks are inserted into the positioning groove, a sealing ring is fixedly sleeved on the outer wall of the ring, the sealing ring fits into the pressure relief pipe opening, and a fixing frame is connected to the side wall of the mounting plate.

[0009] Preferably, the fixed frame has a slot on its side wall, and symmetrical grooves are formed on the inner walls of both sides of the fixed frame. The card plate is connected to the side wall of the mounting rod, the mounting rod is inserted into the fixed frame, the card plate is inserted into the slot, and the card plate is engaged with the ring.

[0010] Preferably, an L-shaped groove is provided on the side wall of the mounting rod, and a movable groove is provided at the end of the L-shaped groove. Two embedded beads are movably engaged in the movable groove, with the embedded beads extending out of the end face of the mounting rod and engaging with the groove. An L-shaped lever is movably engaged in the L-shaped groove.

[0011] Preferably, one end of the L-shaped lever is provided with two inclined surfaces, the inclined surfaces of the L-shaped lever are engaged with the embedded beads, the pin is engaged with the L-shaped groove, the pin is engaged with the L-shaped lever, a buckle groove is provided on the side wall of the end cap of the pin, an elastic buckle is connected to the side wall of the mounting rod, the elastic buckle is engaged with the buckle groove, and an insertion hole is provided on the peripheral wall of the guide post, the pin is engaged with the insertion hole.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By connecting the mounting plate to the ring, the sealing piston and sealing gasket are assembled. After inserting the mounting rod into the fixed frame, the L-shaped lever is moved to push the embedded bead to the end of the movable groove until the embedded bead engages with the groove, ensuring stable insertion of the mounting rod into the fixed frame. The pin is then inserted into the L-shaped groove to limit the movement of the L-shaped lever. The spring returns to its original position and pushes the push plate to move, allowing the sealing piston to be inserted into the pressure relief pipe, and the sealing gasket to block the opening of the pressure relief pipe. The operation is simple, and the sealing piston and sealing gasket can be easily replaced individually after wear. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a half-sectional view of the pressure relief box structure of this utility model;

[0016] Figure 3 This is an exploded view of the sealing piston structure connection of this utility model;

[0017] Figure 4 This is an exploded cross-sectional view of the connecting plate of the mounting rod structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the push plate structure connection of this utility model.

[0019] In the diagram: 1. Explosion-proof distribution cabinet; 2. Pressure relief pipe; 3. Pressure relief box; 4. Pressure relief hole; 5. Guide column; 6. Spring; 7. Push plate; 8. Mounting rod; 9. Mounting plate; 10. Sealing piston; 11. Positioning groove; 12. Ring; 13. Positioning block; 14. Sealing ring gasket; 15. Fixing frame; 16. Slot; 17. Embedded groove; 18. Clamping plate; 19. L-shaped groove; 20. Movable groove; 21. Embedded bead; 22. L-shaped lever; 23. Pin; 24. Buckle groove; 25. Elastic buckle; 26. Socket. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] Please see Figures 1-5 This utility model provides a technical solution: an explosion-proof power distribution cabinet with a pressure relief structure, comprising: an explosion-proof power distribution cabinet 1 and a pressure relief box 3; the pressure relief pipe 2 on the side wall of the explosion-proof power distribution cabinet 1 is fixedly fitted with the pressure relief box 3 at its outer end, the pressure relief box 3 is provided with a door at its front end, the pressure relief box 3 is provided with a pressure relief hole 4 on its bottom wall, two guide posts 5 are connected and provided on the inner side wall of the pressure relief box 3, the guide posts 5 are fitted with springs 6, and a push plate 7 is movably fitted with the guide posts 5; an installation rod 8 is connected and provided on the side wall of the push plate 7, and a piston assembly is provided on the installation rod 8.

[0022] The pressure relief pipe 2 connects the explosion-proof distribution cabinet 1 and the pressure relief box 3. One end of the guide column 5 is connected to the inner wall of the pressure relief box 3, and the other end is separated from the inner wall of the pressure relief box 3 by one end, so that the push plate 7 can be removed to replace the spring 6. Both ends of the spring 6 can easily contact the inner wall of the pressure relief box 3 and the side wall of the push plate 7. When the spring 6 is reset, it pushes the push plate 7 to move horizontally along the guide column 5.

[0023] A sealing piston 10 is connected to the side wall of the mounting plate 9 in the piston assembly. The sealing piston 10 is movably inserted into the pressure relief pipe 2. Positioning grooves 11 are symmetrically opened on the side wall of the mounting plate 9, and a ring 12 is fitted onto the mounting plate 9. Positioning blocks 13 are symmetrically connected to the inner wall of the ring 12 and are inserted into the positioning grooves 11. A sealing gasket 14 is fixedly fitted onto the outer wall of the ring 12 and fits against the opening of the pressure relief pipe 2. A fixing frame 15 is connected to the side wall of the mounting plate 9.

[0024] The sealing piston 10 is inserted into the pressure relief pipe 2. When the gas pressure in the explosion-proof distribution cabinet 1 increases, the gas pushes the sealing piston 10 to move. The mounting plate 9 and the ring 12 are sleeved and matched. The positioning block 13 and the positioning groove 11 are inserted for positioning and installing the sealing ring gasket 14. The sealing ring gasket 14 fits against the opening of the pressure relief pipe 2 to block the pressure relief pipe 2.

[0025] The fixed frame 15 has a slot 16 on its side wall and symmetrical grooves 17 on its inner walls on both sides. The card plate 18 is connected to the side wall of the mounting rod 8. The mounting rod 8 is inserted into the fixed frame 15, the card plate 18 is inserted into the slot 16, and the card plate 18 is engaged with the ring 12.

[0026] The mounting rod 8 is inserted into the fixing frame 15 for mounting the mounting plate 9. The clamping plate 18 is inserted into the clamping groove 16 to assist in positioning the mounting plate 9. At the same time, the clamping plate 18 is clamped into the ring 12 to fix the position of the ring 12, so as to achieve stable installation of the sealing gasket 14.

[0027] An L-shaped groove 19 is provided on the side wall of the mounting rod 8, and a movable groove 20 is provided at the end of the L-shaped groove 19. Two embedded beads 21 are movably engaged in the movable groove 20. The embedded beads 21 extend out of the end face of the mounting rod 8 and are engaged with the groove 17. An L-shaped lever 22 is movably engaged in the L-shaped groove 19.

[0028] When the embedded bead 21 moves to the end of the movable groove 20, part of the embedded bead 21 extends out of the end face of the mounting rod 8 and engages with the groove 17, which is used to fix the relative position of the mounting rod 8 and the fixed frame 15 after they are inserted. One end of the L-shaped dial 22 extends out of the L-shaped groove 19, which makes it easy to move the L-shaped dial 22 along the L-shaped groove 19.

[0029] The L-shaped lever 22 has two inclined surfaces at one end. The inclined surfaces of the L-shaped lever 22 are engaged with the embedded bead 21. The post of the pin 23 is engaged with the L-shaped groove 19. The post of the pin 23 is engaged with the L-shaped lever 22. A buckle groove 24 is provided on the side wall of the end cap of the pin 23. An elastic buckle 25 is connected to the side wall of the mounting rod 8. The elastic buckle 25 is engaged with the buckle groove 24. An insertion hole 26 is provided on the periphery of the guide post 5. The post of the pin 23 is engaged with the insertion hole 26.

[0030] The inclined surface of the L-shaped lever 22 engages with the embedded bead 21 to push the embedded bead 21 to the end of the movable groove 20. When the post of the pin 23 is inserted into the L-shaped groove 19, the peripheral wall of the pin 23 fits against the side wall of the L-shaped lever 22 to achieve a limit. The elastic buckle 25 engages with the buckle groove 24 to fix the position of the pin 23. When the post of the pin 23 is inserted into the insertion hole 26 of the guide post 5, the end cap of the pin 23 limits the push plate 7, which facilitates the installation of the sealing piston 10 and the sealing gasket 14.

[0031] Working principle: Open the door of the pressure relief box 3, move the push plate 7 horizontally along the guide column 5, so that the push plate 7 compresses the spring 6, and inserts the pin 23 into the insertion hole 26. At this time, the end cap of the pin 23 is attached to the side wall of the push plate 7, thereby limiting the movement of the push plate 7. Then, after the mounting plate 9 is sleeved with the ring 12, the positioning block 13 is inserted into the positioning groove 11, realizing the combined installation of the sealing piston 10 and the sealing gasket 14. Insert the mounting rod 8 into the fixed frame 15, and insert the clamping plate 18 into the clamping groove 16. Move the L-shaped lever 22 along the L-shaped groove 19 towards the movable groove 20. After the inclined surface of the L-shaped lever 22 engages with the embedded bead 21, as the L-shaped lever 22 moves, the inclined surface of the L-shaped lever 22 pushes the embedded bead 21 to the end of the movable groove 20. At this time, part of the embedded bead 21 extends out of the end face of the mounting rod 8 and engages with the groove 17, ensuring that the mounting rod 8 is inserted into the fixed frame 15. When the connection is stable, the side wall of the clamping plate 18 is attached to the side wall of the ring 12 to fix the position of the ring 12. Remove the pin 23 at the insertion hole 26 and insert the pin 23 into the L-shaped groove 19 until the end cap of the pin 23 is attached to the side wall of the mounting rod 8. Then, the elastic buckle 25 and the buckle groove 24 are engaged to fix the position of the pin 23. At this time, the peripheral wall of the pin 23 is attached to the side wall of the L-shaped lever 22, limiting the movement of the L-shaped lever 22. The spring 6 returns to its original position and pushes the push plate 7 to move, so that the sealing piston 10 is inserted into the pressure relief pipe 2 until the sealing ring gasket 14 is attached to the opening of the pressure relief pipe 2 and blocks the opening of the pressure relief pipe 2. When the gas pressure in the explosion-proof distribution cabinet 1 increases, the gas pushes the sealing piston 10 to move and separate from the pressure relief pipe 2. The gas is discharged from the pressure relief hole 4 to realize the pressure relief of the explosion-proof distribution cabinet 1. The operation is simple and the sealing piston 10 and sealing ring gasket 14 can be easily replaced separately after wear.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof distribution cabinet with a pressure relief structure, comprising: Explosion-proof power distribution cabinet (1) and pressure relief box (3); the pressure relief pipe (2) on the side wall of the explosion-proof power distribution cabinet (1) is fixedly fitted with a pressure relief box (3) at the outer end. The pressure relief box (3) is provided with a door at the front end and a pressure relief hole (4) on the bottom wall of the pressure relief box (3). Two guide columns (5) are connected to the inner side wall of the pressure relief box (3). Springs (6) are fitted on the guide columns (5). The push plate (7) is movably fitted with the guide columns (5). The feature is that: an installation rod (8) is connected to the side wall of the push plate (7), and a piston assembly is provided on the installation rod (8); an L-shaped groove (19) is opened on the side wall of the installation rod (8), and a movable groove (20) is opened at the end of the L-shaped groove (19). Two embedded beads (21) are movably engaged in the movable groove (20), and the embedded beads (21) extend out of the end face of the installation rod (8). The embedded beads (21) are engaged with the groove (17), and an L-shaped lever plate (22) is movably engaged in the L-shaped groove (19).

2. The explosion-proof distribution cabinet with a pressure relief structure according to claim 1, characterized in that: The piston assembly includes a mounting plate (9), a sealing piston (10), a sealing ring gasket (14), a retaining plate (18), an L-shaped lever (22), and a pin (23). The sealing piston (10) is connected to the side wall of the mounting plate (9). The sealing piston (10) is movably inserted into the pressure relief pipe (2). The mounting plate (9) has symmetrically opened positioning grooves (11) on its side wall. The mounting plate (9) is fitted with a ring (12).

3. The explosion-proof distribution cabinet with a pressure relief structure according to claim 2, characterized in that: The inner wall of the ring (12) is symmetrically connected with positioning blocks (13), which are inserted into the positioning groove (11). A sealing ring gasket (14) is fixedly sleeved on the outer wall of the ring (12), and the sealing ring gasket (14) is in contact with the opening of the pressure relief pipe (2). A fixing frame (15) is connected to the side wall of the mounting plate (9).

4. The explosion-proof distribution cabinet with a pressure relief structure according to claim 3, characterized in that: The fixed frame (15) has a slot (16) on its side wall and symmetrical grooves (17) on the inner walls of both sides. The card plate (18) is connected to the side wall of the mounting rod (8). The mounting rod (8) is inserted into the fixed frame (15), the card plate (18) is inserted into the slot (16), and the card plate (18) is snapped into the ring (12).

5. The explosion-proof distribution cabinet with a pressure relief structure according to claim 4, characterized in that: The L-shaped lever (22) has two inclined surfaces at one end. The inclined surfaces of the L-shaped lever (22) are engaged with the embedded bead (21). The post of the pin (23) is engaged with the L-shaped groove (19). The post of the pin (23) is engaged with the L-shaped lever (22). A buckle groove (24) is provided on the side wall of the end cap of the pin (23). An elastic buckle (25) is connected to the side wall of the mounting rod (8). The elastic buckle (25) is engaged with the buckle groove (24). An insertion hole (26) is provided on the periphery of the guide post (5). The post of the pin (23) is engaged with the insertion hole (26).

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