Gas pressure relief device and gas insulated switchgear comprising same

Abstract

The utility model discloses a gas pressure relief device and a gas insulated switchgear comprising the same, comprising an equipment main body, a cabinet door arranged on one side of the equipment main body, a first control box, a second control box and a gas chamber box body arranged in the equipment main body, a spring telescopic rod arranged on one side of the gas chamber box body and a plugging plate arranged on one side of the gas chamber box body, a pressure relief opening is formed in one side of the air chamber box, a sealing gasket is arranged on one side of the plugging plate, a fixing block and pulleys are arranged at the bottom of the equipment body, a fixing mechanism is arranged below the equipment body, an elastic mechanism is arranged in the sealing gasket, and a first metal sheet and a second metal sheet are arranged in the cavity. By arranging the elastic mechanism, the fixing block, the pulley and the fixing mechanism, the sealing effect of the sealing gasket of the plugging plate of the gas pressure relief device can be further improved, and the convenience of moving and replacing the position of the gas insulated switchgear can be further improved under the condition that the stability of the device main body in use is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of gas-insulated switchgear, in particular to a gas pressure relief device and a gas-insulated switchgear containing the device. Background Art

[0002] Gas-insulated switchgear is an electrical device used in high-voltage power systems to isolate circuits, protect electrical equipment, and ensure the safe operation of power systems. Gas-insulated switchgear usually uses sulfide gas (such as sulfide gas SF6) as an insulating medium. When an overload or fault occurs inside the equipment, excessive pressure will be generated, which may cause the equipment to rupture or fire. In order to prevent this from happening, the equipment is usually equipped with a gas pressure relief device. A gas pressure relief device is a device used to release compressed gas or gas mixtures. When the pressure of the gas-insulated switchgear exceeds the safety limit, these devices will automatically start and release excess gas into the external environment to relieve the internal pressure of the equipment and ensure the safe operation of the equipment.

[0003] The prior art has the following deficiencies: the prior art publication number 202322764968.9 states that “a gas pressure relief device and a gas-insulated switchgear containing the device” includes “a gas pressure relief assembly, which includes: at least one gas chamber box body, on which a pressure relief port is formed; a mounting frame fixed to the gas chamber box body, a blocking plate is provided on the side of the mounting frame facing the gas chamber box body, and the blocking plate is connected to an adjustable elastic member installed on the mounting frame; and also includes a damping member arranged in linkage with the blocking plate, the damping member includes a cylinder body fixed to the mounting frame, a first cavity and a second cavity with colinear axes are formed on the inner side of the cylinder body, and a piston connected to the blocking plate is provided in the second cavity”;

[0004] A sealing gasket is installed on one side of the sealing plate of the gas pressure relief device of the above-mentioned equipment to improve the sealing effect of the sealing plate. However, as the use time of the sealing plate increases, the material of the sealing gasket will gradually age and the elasticity will gradually decrease, thereby affecting the overall sealing effect of the sealing plate. The sealing effect of the sealing gasket of the sealing plate of the gas pressure relief device can be further improved. In order to ensure the stability of the equipment during use, the existing gas insulated switchgear is usually directly fixed on a horizontal ground as a whole. When the gas insulated switchgear needs to be moved and replaced in the later stage, it is often difficult to move and carry due to its large overall size and heavy weight. The convenience of moving and replacing the gas insulated switchgear can be further improved. Utility Model Content

[0005] The utility model aims to provide a gas pressure relief device and a gas insulated switchgear containing the same, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas pressure relief device and a gas insulated switchgear containing the device, comprising a device body, a cabinet door is arranged on one side of the device body, a first control box, a second control box, and an air chamber box body are arranged in the device body, a spring telescopic rod and a blocking plate are arranged on one side of the air chamber box body, a pressure relief port is opened on one side of the air chamber box body, a sealing gasket is arranged on one side of the blocking plate, a fixing block and a pulley are arranged at the bottom of the device body, a fixing mechanism is arranged below the device body, and an elastic mechanism is arranged in the sealing gasket;

[0007] The elastic mechanism includes a cavity, a first metal sheet, a second metal sheet, a movable groove and an elastic member. The sealing gasket is provided with a cavity, the first metal sheet and the second metal sheet are arranged in the cavity, a movable groove is provided on one side of the first metal sheet, and an elastic member is arranged in the movable groove.

[0008] As a preferred technical solution of the utility model, the fixing mechanism includes a support block, a slot, a magnet block, an anti-slip pad and a connecting rod. A support block is arranged at the bottom of the fixing block, a slot is opened at the top of the support block, a magnet block is arranged on one side of the inner wall of the slot, an anti-slip pad is arranged at the bottom of the support block, and a connecting rod is arranged on one side of the support block.

[0009] As a preferred technical solution of the utility model, one end of the air chamber box is embedded in the back of the equipment body, the air chamber box is connected to the first control box and the second control box through pipes, and the blocking plate is fixedly installed on the telescopic ends of four groups of spring telescopic rods. When the telescopic ends of the spring telescopic rods are completely located in the installation end, the blocking plate is tightly attached to one side of the air chamber box.

[0010] As a preferred technical solution of the utility model, one side of the first metal sheet is provided with a plurality of groups of arc-shaped corrugations and this side is fixed to one side of the inner wall of the cavity, and the second metal sheet has the same structure as the first metal sheet and the two are symmetrically arranged.

[0011] As a preferred technical solution of the utility model, a plurality of groups of movable grooves are arranged between the first metal sheet and the second metal sheet, and the plurality of groups of movable grooves are filled with elastic members, and the specific material of the elastic members is elastic sponge.

[0012] As a preferred technical solution of the utility model, a plurality of groups of pulleys are arranged at the bottom of the device body, and four groups of fixing blocks are fixedly installed at the bottom of the device body.

[0013] As a preferred technical solution of the utility model, the anti-slip pad is fixedly installed at the bottom of the support block. There are four groups of support blocks. A connecting rod is fixedly installed between every two groups of support blocks. The four groups of card slots are respectively adapted to the bottom ends of the four groups of fixed blocks, and the bottom ends of the four groups of fixed blocks are respectively clamped in the four groups of card slots.

[0014] As a preferred technical solution of the utility model, magnet blocks are embedded on both sides of the inner wall of each group of the slots and on both sides of the corresponding fixed blocks, and the magnet blocks on the fixed blocks are magnetically attracted to the magnet blocks on the corresponding slots. After the fixing mechanism is installed, the bottom of the support block is lower than the bottom of the pulley, and after the fixing mechanism is removed, the bottom of the fixed block is higher than the bottom of the pulley.

[0015] Compared with the prior art, the utility model provides a gas pressure relief device and a gas insulated switchgear containing the same, which has the following beneficial effects:

[0016] 1. The gas pressure relief device and the gas insulated switchgear containing the same, by setting an elastic mechanism, the arc-shaped corrugated setting of the first metal sheet and the second metal sheet can make the two have a certain elasticity themselves. Since the elastic member itself has good elasticity, the elastic mechanism can make the sealing gasket as a whole still maintain good elasticity after the elasticity of the sealing gasket itself disappears, thereby improving the elastic durability of the sealing gasket and further improving the sealing effect of the sealing plate sealing gasket of the gas pressure relief device.

[0017] 2. The gas pressure relief device and the gas insulated switchgear containing the same are provided with a fixed block, a pulley and a fixing mechanism. When the fixing mechanism is installed under the device body, the pulley will not drive the movement of the device body. The support block combined with the fixed block can support the device body. The anti-skid pad can improve the anti-skid property of the bottom of the support block, thereby improving the overall support stability of the support block. The device body can be used normally, and the device body can be moved upward at a later time to separate the fixed block from the support block. The fixing mechanism is placed on the top of the device body. The pulley can facilitate the movement of the entire device body. This structure can further improve the convenience of moving and replacing the gas insulated switchgear while ensuring the stability of the device body during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure after the fixing mechanism of the utility model is installed;

[0019] Figure 2 This is a schematic diagram of the internal structure of the device body after the fixing mechanism of the utility model is removed;

[0020] Figure 3 This is a schematic diagram of the installation position of the blocking plate of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the sealing gasket of the utility model;

[0022] Figure 5 This is a schematic diagram of the specific structure of the elastic mechanism of the utility model;

[0023] Figure 6 This is a schematic diagram of the three-dimensional structure of the second metal sheet of the utility model;

[0024] Figure 7 It is a schematic diagram of the specific structure of the fixing mechanism of the utility model.

[0025] In the figure: 1. Equipment body; 2. Cabinet door; 3. First control box; 4. Second control box; 5. Air chamber box; 6. Spring telescopic rod; 7. Pressure relief port; 8. Sealing plate; 9. Sealing gasket; 10. Fixed block; 11. Pulley; 12. Fixing mechanism; 1201. Support block; 1202. Slot; 1203. Magnet block; 1204. Anti-skid pad; 1205. Connecting rod; 13. Elastic mechanism; 1301. Cavity; 1302. First metal sheet; 1303. Second metal sheet; 1304. Moving slot; 1305. Elastic member. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-7 In this embodiment: a gas pressure relief device and a gas insulated switchgear containing the device, comprising a device body 1, a cabinet door 2 is arranged on one side of the device body 1, and the cabinet door 2 can seal the device body 1, a first control box 3, a second control box 4, and an air chamber box 5 are arranged in the device body 1, a spring telescopic rod 6 and a blocking plate 8 are arranged on one side of the air chamber box 5, and the blocking plate 8 can seal the pressure relief port 7, a pressure relief port 7 is opened on one side of the air chamber box 5, and the pressure relief port 7 can facilitate pressure relief, a sealing gasket 9 is arranged on one side of the blocking plate 8, and the sealing gasket 9 can improve the sealing effect of the blocking plate 8, a fixing block 10 and a pulley 11 are arranged at the bottom of the device body 1, a fixing mechanism 12 is arranged below the device body 1, and an elastic mechanism 13 is arranged in the sealing gasket 9;

[0028] The elastic mechanism 13 includes a cavity 1301, a first metal sheet 1302, a second metal sheet 1303, a movable groove 1304 and an elastic member 1305. The sealing gasket 9 has a cavity 1301, and the first metal sheet 1302 and the second metal sheet 1303 are arranged in the cavity 1301. A movable groove 1304 is opened on one side of the first metal sheet 1302, and an elastic member 1305 is arranged in the movable groove 1304. The elastic member 1305 itself has good elasticity.

[0029] In this embodiment, the fixing mechanism 12 includes a support block 1201, a slot 1202, a magnet block 1203, an anti-skid pad 1204 and a connecting rod 1205. The bottom of the fixing block 10 is provided with a support block 1201, the top of the support block 1201 is provided with a slot 1202, a magnet block 1203 is provided on one side of the inner wall of the slot 1202, an anti-skid pad 1204 is provided on the bottom of the support block 1201, and a connecting rod 1205 is provided on one side of the support block 1201. The connecting rod 1205 can facilitate the connection between the four groups of support blocks 1201; one end of the air chamber box 5 is embedded in the back of the device body 1, and the air chamber box 5 is connected to the first control box 3 and the second control box 3. The boxes 4 are all connected through pipelines, and the blocking plate 8 is fixedly installed on the telescopic ends of the four groups of spring telescopic rods 6. When the telescopic ends of the spring telescopic rods 6 are completely located in the installation end, the blocking plate 8 is tightly attached to one side of the air chamber box body 5, and the blocking plate 8 can seal the pressure relief port 7; a plurality of groups of arc-shaped corrugations are provided on one side of the first metal sheet 1302 and this side is fixed to one side of the inner wall of the cavity 1301, and the second metal sheet 1303 has the same structure as the first metal sheet 1302 and the two are symmetrically arranged. The arc-shaped corrugation arrangement of the first metal sheet 1302 can make one side of it have a certain elasticity; a plurality of groups of movable The movable grooves 1304 are filled with elastic members 1305, and the specific material of the elastic members 1305 is elastic sponge. The movable grooves 1304 can facilitate the movement of the arc-shaped corrugated sides of the first metal sheet 1302 and the second metal sheet 1303; the bottom of the device body 1 is provided with several groups of pulleys 11, and the bottom of the device body 1 is fixedly installed with four groups of fixed blocks 10, and the pulleys 11 can facilitate the movement of the device body 1; the anti-slip pads 1204 are fixedly installed at the bottom of the support blocks 1201, and there are four groups of support blocks 1201. A connecting rod 1205 is fixedly installed between every two groups of support blocks 1201, and the four groups of slots 1202 are respectively connected to the four groups of fixed blocks. The bottom ends of the four groups of fixed blocks 10 are adapted to each other, and the bottom ends of the four groups of fixed blocks 10 are respectively clamped in the four groups of slots 1202, and the anti-skid pads 1204 can improve the anti-skid property of the bottom of the support block 1201; magnet blocks 1203 are embedded on both sides of the inner wall of each group of slots 1202 and on both sides of the corresponding fixed block 10, and the magnet blocks 1203 on the fixed block 10 are magnetically attracted to the magnet blocks 1203 on the corresponding slots 1202. After the fixing mechanism 12 is installed, the bottom of the support block 1201 is lower than the bottom of the pulley 11, and after the fixing mechanism 12 is removed, the bottom of the fixed block 10 is higher than the bottom of the pulley 11, and the slots 1202 can facilitate the connection between the fixed block 10 and the support block 1201.

[0030] The working principle and use process of the utility model are as follows: the operator first checks whether the relevant components are installed in the correct position. At this time, the fixing mechanism 12 is installed below the device body 1, the bottom of the support block 1201 is lower than the bottom of the pulley 11, the pulley 11 does not contact the ground, and will not drive the movement of the device body 1. When the fixing block 10 is connected to the card slot 1202, the corresponding magnet blocks 1203 are attracted by magnetic force, and the fixing block 10 will not move or leave the card slot 1202 at will. The support block 1201 is combined with the fixed The fixed block 10 can support the device body 1, and the anti-skid pad 1204 can improve the anti-skid property of the bottom of the support block 1201, thereby improving the overall support stability of the support block 1201. At this time, the device body 1 can be used normally. When the pressure in the air chamber box 5 increases, an extrusion force is generated on the sealing plate 8, causing the sealing plate 8 to move away from the pressure relief port 7. During this process, the spring inside the spring telescopic rod 6 will be stretched. At this time, the air chamber box 5 can be depressurized through the pressure relief port 7, and due to the spring telescopic rod 6 Due to the elasticity, the sealing plate 8 will eventually return to the final position, and the sealing gasket 9 can improve the sealing performance of the sealing plate 8. Since the arc-shaped corrugated setting of the first metal sheet 1302 and the second metal sheet 1303 can make the two have a certain elasticity, and the elastic member 1305 itself has good elasticity, the elastic mechanism 13 can make the sealing gasket 9 as a whole still maintain good elasticity after the elasticity of the sealing gasket 9 itself disappears, thereby improving the elastic durability of the sealing gasket 9 and further improving the sealing effect of the sealing gasket 9. When the equipment main body 1 needs to be moved and replaced later, the equipment main body 1 is moved upward to separate the fixing block 10 from the supporting block 1201, and the fixing mechanism 12 is placed on the top of the equipment main body 1. At this time, the bottom of the fixing block 10 is higher than the bottom of the pulley 11, and the pulley 11 can facilitate the movement of the entire equipment main body 1. This structure can further improve the sealing effect of the sealing plate 8 and the sealing gasket 9 of the gas pressure relief device, and can further improve the convenience of moving and replacing the gas insulated switchgear while ensuring the stability of the equipment main body 1 during use.

[0031] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above 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 gas pressure relief device and a gas insulated switchgear including the device, comprising a device body (1), a cabinet door (2) being arranged on one side of the device body (1), a first control box (3), a second control box (4), and a gas chamber box (5) being arranged inside the device body (1), a spring telescopic rod (6) and a blocking plate (8) being arranged on one side of the gas chamber box (5), a pressure relief port (7) being opened on one side of the gas chamber box (5), and a sealing gasket (9) being arranged on one side of the blocking plate (8), characterized in that: A fixing block (10) and a pulley (11) are provided at the bottom of the device body (1), a fixing mechanism (12) is provided below the device body (1), and an elastic mechanism (13) is provided inside the sealing gasket (9); The elastic mechanism (13) comprises a cavity (1301), a first metal sheet (1302), a second metal sheet (1303), a movable groove (1304) and an elastic member (1305); the sealing gasket (9) is provided with a cavity (1301); the first metal sheet (1302) and the second metal sheet (1303) are arranged in the cavity (1301); a movable groove (1304) is provided on one side of the first metal sheet (1302); and an elastic member (1305) is arranged in the movable groove (1304).

2. A gas pressure relief device and a gas insulated switchgear containing the same according to claim 1, characterized in that: The fixing mechanism (12) comprises a support block (1201), a slot (1202), a magnet block (1203), an anti-slip pad (1204) and a connecting rod (1205); the support block (1201) is arranged at the bottom of the fixing block (10); the slot (1202) is arranged at the top of the support block (1201); the magnet block (1203) is arranged on one side of the inner wall of the slot (1202); the anti-slip pad (1204) is arranged at the bottom of the support block (1201); and the connecting rod (1205) is arranged on one side of the support block (1201).

3. A gas pressure relief device and a gas insulated switchgear containing the same according to claim 1, characterized in that: One end of the air chamber box (5) is embedded in the back of the equipment body (1); the air chamber box (5) is connected to the first control box (3) and the second control box (4) through pipelines; the blocking plate (8) is fixedly mounted on the telescopic ends of the four sets of spring telescopic rods (6); when the telescopic ends of the spring telescopic rods (6) are completely located in the mounting end, the blocking plate (8) is in close contact with one side of the air chamber box (5).

4. A gas pressure relief device and a gas insulated switchgear containing the same according to claim 1, characterized in that: One side of the first metal sheet (1302) is provided with a plurality of groups of arc-shaped corrugations and is fixed to one side of the inner wall of the cavity (1301); the second metal sheet (1303) has the same structure as the first metal sheet (1302) and the two are symmetrically arranged.

5. A gas pressure relief device and a gas insulated switchgear containing the same according to claim 1, characterized in that: A plurality of groups of movable grooves (1304) are arranged between the first metal sheet (1302) and the second metal sheet (1303), and the plurality of groups of movable grooves (1304) are filled with elastic members (1305), and the specific material of the elastic members (1305) is elastic sponge.

6. A gas pressure relief device and a gas insulated switchgear containing the same according to claim 1, characterized in that: A plurality of groups of pulleys (11) are arranged at the bottom of the device body (1), and four groups of fixing blocks (10) are fixedly installed at the bottom of the device body (1).

7. A gas pressure relief device and a gas insulated switchgear containing the same according to claim 2, characterized in that: The anti-slip pad (1204) is fixedly installed at the bottom of the support block (1201). There are four groups of support blocks (1201). A connecting rod (1205) is fixedly installed between every two groups of support blocks (1201). The four groups of slots (1202) are respectively matched with the bottom ends of the four groups of fixed blocks (10). The bottom ends of the four groups of fixed blocks (10) are respectively clamped in the four groups of slots (1202).

8. A gas pressure relief device and a gas insulated switchgear containing the same according to claim 2, characterized in that: Magnet blocks (1203) are embedded on both sides of the inner wall of each group of the slots (1202) and on both sides of the corresponding fixed block (10); the magnet blocks (1203) on the fixed block (10) and the magnet blocks (1203) on the corresponding slots (1202) are magnetically attracted to each other; after the fixing mechanism (12) is installed, the bottom of the support block (1201) is lower than the bottom of the pulley (11); after the fixing mechanism (12) is removed, the bottom of the fixing block (10) is higher than the bottom of the pulley (11).

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