Explosion-proof high-voltage switch cabinet

Abstract

According to the technical scheme, the explosion-proof high-voltage switch cabinet comprises a cabinet body, the cabinet body is provided with a movable bottom plate, the movable bottom plate is provided with a movable device, the movable device is close to the lower end face of the movable bottom plate, and the movable device comprises a hard spring, a cushion block and a movable check block with an inclined face A; the cushion block is connected with the hard spring, the cabinet body is provided with a cavity matched with the movable device, the cushion block is close to and makes contact with the movable check block, the cushion block is provided with an inclined face B, the movable check block is provided with an inclined face C matched with the cushion block, and the cabinet body is provided with cabinet feet. According to the utility model, when the hot air pressure of the cabinet is increased through the movable device, the movable bottom plate moves downwards under the action of the air pressure, so that the air vent and the air release port are communicated to release the internal pressure, and when the pressure in the cabinet body is increased sharply, the movable stop block rotates rapidly and greatly, so that the movable bottom plate can fall off to release the pressure, and the cabinet body is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to switchgear technology field more specifically, it relates to a kind of explosion-proof high-voltage switchgear. BACKGROUND

[0002] At present, electrical cabinet is by steel material processing and is used to protect the cabinet of normal work of component. Electrical cabinet manufacturing material is generally divided into hot-rolled steel plate and cold-rolled steel plate two kinds. Cold-rolled steel plate is more soft than hot-rolled steel plate, and it is more suitable for the production of electrical cabinet. Electrical cabinet is widely used in chemical industry, environmental protection industry, power system, metallurgical system, industry, nuclear power industry, fire safety monitoring, transportation industry and so on

[0003] At present, the Chinese patent with the announcement number CN202420919887.3 discloses a kind of high-voltage switchgear, including the utility model belongs to switchgear technical field, specifically a kind of high-voltage switchgear, including cabinet and hinged cabinet door, the surface of the cabinet is provided with vent, the top of the cabinet is installed with fire extinguishing assembly, the fire extinguishing assembly includes high-pressure fire extinguishing tank, the high-pressure fire extinguishing tank is fixedly installed at the top of cabinet;The utility model passes through the fire extinguishing medium in high-pressure fire extinguishing tank inside in turn through the inside of fire extinguishing pipe by pipe one, and by the nozzle spouts to high-voltage switchgear internal component is extinguished, by valve can be flexibly opened and closed nozzle, so that the inside empty area of cabinet is closed, the area of installation electrical component is opened, and then relatively accurate fire extinguishing and save fire extinguishing medium.

[0004] But there are some defects in the prior art, some high-voltage switchgears of prior art do not have explosion-proof structure, when the converter in the cabinet fails or short-circuit occurs due to improper operation, the inside of the cabinet is extremely easy to cause explosion due to high temperature or high pressure, the instantaneous thermal effect and discharge arc generated in the cabinet can cause explosion, which seriously endangers the safety of the operating personnel outside the cabinet and other equipment outside the cabinet, and can cause serious casualties and property losses. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model provides an explosion-proof high-voltage switchgear.

[0006] To achieve the above object, the utility model provides the following technical scheme: including cabinet, the cabinet is provided with movable floor, the movable floor is provided with movable device, the movable device is close to the lower end surface of movable floor, the movable device includes hard spring, cushion block, movable block with inclined plane A, the cushion block is connected with hard spring, the cabinet is provided with cavity corresponding to movable device, the cushion block is close to contact movable block, the cushion block is provided with inclined plane B, the movable block is provided with inclined plane C corresponding to cushion block, the cabinet is provided with cabinet foot.

[0007] The utility model further sets up: the cushion block is provided with the vent, the cabinet body is provided with the vent corresponding vent.

[0008] The utility model further sets up: the movable device number is four, evenly distributes in movable bottom plate two sides.

[0009] The utility model further sets up: the cabinet body is provided with the raised fire extinguishing device, the fire extinguishing device is provided with temperature sensor.

[0010] The utility model further sets up: movable bottom plate sets up movable sealing ring with movable groove, be provided with the recess on the cabinet body.

[0011] The utility model further sets up: the movable bottom plate lower surface is provided with rubber pad, and the rubber pad number is four, evenly distributes in movable cushion block four corners.

[0012] The utility model further sets up: the movable block is provided with plastic support, the plastic support is provided with the broken groove, the cabinet body is provided with the mounting groove corresponding with plastic support.

[0013] Summarized above, the utility model has following beneficial effect: through the setting of movable device makes when the temperature in the cabinet body rises and the air pressure rises, movable bottom plate will move downward under the action of air pressure and makes the vent and vent conduction release internal pressure, through the setting of inclined plane B and inclined plane C makes when the pressure in the cabinet body rises and makes movable block rotates greatly, makes movable bottom plate can drop rapidly, releases pressure and avoids the whole explosion of cabinet body, through the setting of fire extinguishing device makes when the utility model explodes and can extinguish fire. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the structural schematic diagram of this embodiment;

[0015] Fig. 2 It is the partial enlarged scale sectional view of A in this embodiment;

[0016] Fig. 3 It is the bottom view of this embodiment;

[0017] Fig. 1, cabinet;11, vent;12, recess;13, cabinet foot;14, fire extinguishing device;141, temperature sensor;2, movable bottom plate;21, rubber pad;22, movable device;221, hard spring;222, movable block;2221, inclined plane A;2222, inclined plane C;223, cushion block;2231, inclined plane B;2232, vent;23, movable sealing ring;3, plastic support;4, cabinet bottom cavity. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] This embodiment discloses an explosion-proof high-voltage switchgear, such as... Figs. 1 to 3 As shown, the device includes a cabinet body 1, which has a movable base plate 2. The movable base plate 2 has a movable device 22 located near its lower surface. The movable device 22 includes a rigid spring 221, a pad 223, and a movable stop block 222 with an inclined surface A2221. The pad 223 is connected to the rigid spring 221. The cabinet body 1 has a cavity adapted to the movable device 22. The pad 223 is in close contact with the movable stop block 222. The pad 223 has an inclined surface B2231, and the movable stop block 222 has an inclined surface C2222 adapted to the pad 223. The movable device 22 controls the movement of the movable base plate 2. The rigid spring 221 transmits pressure to the movable stop block 222 through the pad 223, allowing the stop block to support the movable base plate. Plate 2 allows the movable base plate 2 to move up and down under the pressure inside the cabinet 1, overcoming the elastic force of the rigid spring 221, to alleviate the pressure inside the cabinet 1. When the pressure inside the cabinet 1 is high, the rotation of the movable base plate 2 block will exceed a certain limit. The inclined plane B2231 and inclined plane C2222 cooperate, and the movable baffle will quickly rotate and retract into the cavity under the elastic force of the rigid spring 221. The movable base plate 2 will fall off the movable baffle 222, allowing the gas inside the cabinet 1 to rush out from the cabinet bottom cavity 4 connected to the external environment, quickly releasing the pressure inside the cabinet 1 and avoiding random splashing that could injure workers if the cabinet 1 explodes. The cabinet 1 is provided with cabinet legs 13. The cabinet legs 13 raise the cabinet 1 as a whole, so that the lower part of the utility unit has a larger cabinet bottom cavity 4 for the movement of the movable base plate 2 and the movable device 22.

[0020] Further improvements include a vent 2232 on the pad 223 and a corresponding vent 11 on the cabinet 1. When electrical components inside the cabinet 1 generate abnormal heat and the gas expands due to heat, causing the movable base plate 2 to slowly descend, the vent 2232 will connect with the vent 11, connecting the inside of the cabinet 1 to the external environment. The higher-pressure gas inside the cabinet 1 will then escape to the outside environment through the vent 2232 and the vent 11, reducing internal pressure and preventing the appliance from exploding due to excessive internal pressure.

[0021] To further improve the design, the number of movable devices 22 is four, evenly distributed on both sides of the movable base plate 2. The arrangement of the movable devices 22 allows the weight of the movable base plate 2 to be evenly distributed across the four devices, forming a stable plane and reducing the possibility of excessive local pressure.

[0022] Further improvement, the cabinet 1 is provided with a raised fire extinguishing device 14, the fire extinguishing device 14 is provided with a temperature sensor 141. The fire extinguishing device 14 is a carbon dioxide fire extinguishing device 14, when the temperature sensor 141 detects that the temperature is too high, the fire extinguishing device 14 is started, the steel cylinder containing liquid carbon dioxide in the fire extinguishing device 14 is opened, and the liquid carbon dioxide is sprayed and rapidly vaporized to absorb a large amount of heat, so that the temperature around the burning object is sharply reduced, and at the same time, the carbon dioxide gas covers the surface of the burning object, and the influence of the explosion is reduced.

[0023] Further improvement, the movable bottom plate 2 is provided with a movable sealing ring 23 with a movable groove, and the cabinet 1 is provided with a corresponding groove 12. The movable sealing ring 23 is used for sealing the utility cabinet 1, and the movable groove is arranged to enable the movable sealing ring 23 to be pulled and shrunk to a certain extent, so that the movable bottom plate 2 can still be stably sealed when moving up and down to a certain extent.

[0024] Further improvement, the lower surface of the movable bottom plate 2 is provided with four rubber pads 21 which are uniformly distributed at four corners of the movable pad 223. When the movable bottom plate 2 falls and contacts the ground, the rubber pad 21 can absorb and disperse impact energy through its deformation, reduce the impact of the movable bottom plate 2 on the ground, reduce the damage to the ground, and the impact often accompanies the generation of noise. The rubber pad 21 can also reduce the noise generated by the impact of the movable bottom plate 2 on the ground.

[0025] Further improvement, the movable stop block 222 is provided with a plastic support 3, the plastic support 3 is used for providing stable support for the movable stop block 222, so that the movable stop block 222 is stable in normal state, and the movable bottom plate 2 does not shake. The plastic support 3 is provided with a broken groove 31, the broken groove 31 is arranged to make the plastic support 3 more easily broken under stress. When the movable stop block 222 moves in the utility, the plastic support 3 will be broken, so that the support 3 does not affect the subsequent movement of the movable stop block 222, and the plastic support 3 dropped during maintenance makes the faulty equipment easy to identify. The cabinet 1 is provided with a corresponding mounting groove.

[0026] The working principle of the utility model

[0027] When the temperature of the electronic components in the cabinet 1 rises and the pressure rises, the movable bottom plate 2 is subjected to the gas pressure in the cabinet 1, and when the pressure overcomes the elastic force of the hard spring 221, the movable bottom plate 2 is pushed under the action of the gas pressure, the plastic support 3 is broken and falls, the movable stop block 222 moves downward, the movable stop block 222 rotates under the action of the movable bottom plate 2 to drive the pad block 223 to move upward, the air vent 2232 is communicated with the air vent 11, and the internal gas flows to the outside through the air vent 2232 and the air vent 11, so that the gas pressure in the cabinet 1 is reduced.

[0028] When the electronic components in the cabinet 1 abnormally heat or fire and explosion occur, the pressure in the cabinet 1 rapidly rises, the internal gas of the cabinet 1 rapidly expands, the movable bottom plate 2 is pushed to move downward, the downward movable bottom plate 2 drives the plastic support 3 to break and fall, the movable stop block 222 rotates greatly, the inclined surface B 2231 cooperates with the inclined surface C 2222, the movable stop block 222 is quickly collected to make the movable bottom plate 2 fall, the cabinet is communicated with the external environment through the cabinet bottom cavity 4, the internal pressure is rapidly released to prevent the cabinet 1 from exploding, and at the same time, the high temperature in the cabinet 1 drives the temperature sensor 141 to start the fire extinguishing device 14, the liquid carbon dioxide of the fire extinguishing device 14 controls the fire, and safety is ensured.

[0029] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. within the design concept of the present application should be included in the protection scope of the present application.

Claims

1. An explosion-proof high-voltage switchgear comprising a cabinet (1), characterized in that: The cabinet body (1) is provided with a movable bottom plate (2), the movable bottom plate (2) is provided with a movable device (22), the movable device (22) is close to the lower end surface of the movable bottom plate (2), the movable device (22) includes a hard spring (221), a cushion block (223), a movable stop block (222) with an inclined surface A (2221), the cushion block (223) is connected with the hard spring (221), the cabinet body (1) is provided with a cavity adapted to the movable device (22), the cushion block (223) is close to the movable stop block (222), the cushion block (223) is provided with an inclined surface B (2231), the movable stop block (222) is provided with an inclined surface C (2222) adapted to the cushion block (223), and the cabinet body (1) is provided with a cabinet foot (13).

2. The explosion-proof high-voltage switchgear according to claim 1, characterized in that: The cushion block (223) is provided with a vent (2232), and the cabinet body (1) is provided with a vent (2232) adapted to the vent (2232).

3. The explosion-proof high-voltage switchgear according to claim 2, characterized in that: The number of the movable device (22) is four, which is evenly distributed on both sides of the movable bottom plate (2).

4. The explosion-proof high-voltage switch cabinet according to claim 1, characterized in that: The cabinet body (1) is provided with a raised fire extinguishing device (14), and the fire extinguishing device (14) is provided with a temperature sensor (141).

5. The explosion-proof high-voltage switchgear according to claim 1, characterized in that: The movable bottom plate (2) is provided with a movable sealing ring (23) with a movable groove, and the cabinet body (1) is provided with a recess (12) adapted thereto.

6. The explosion-proof high voltage switchgear according to claim 1, characterized in that: The lower surface of the movable bottom plate (2) is provided with a rubber pad (21), and the number of the rubber pad (21) is four, which is evenly distributed on the four corners of the movable cushion block (223).

7. The explosion-proof high voltage switchgear according to claim 1, characterized in that: The movable stop block (222) is provided with a plastic support (3), the plastic support (3) is provided with a breaking groove (31), and the cabinet body (1) is provided with a mounting groove adapted to the plastic support (3).

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