Switch cabinet with arc fault pressure release top plate
By setting a pressure relief chamber and pressure relief opening on the top of the switchgear, and using a pressure relief top plate connected by plastic screws to quickly release pressure, the pressure relief problem of the switchgear during arc faults is solved, ensuring equipment safety and personnel protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-03-20
AI Technical Summary
When an internal arc fault occurs in the switchgear, the pressure cannot be released in a timely and effective manner, leading to an explosion of the cabinet, which affects the stable operation of the power system and causes injury to personnel.
Design a switch cabinet with an arc fault pressure relief top plate. By setting a pressure relief chamber and pressure relief opening at the top, the pressure relief top plate connected by plastic screws can be opened quickly in case of a fault. Combined with flexible connection and reinforced structure, rapid pressure relief is achieved, and gas impact damage is reduced through the flow guiding structure.
It enables rapid pressure relief of the switchgear during arc faults, reduces the risk of equipment damage, protects the safety of operators, prevents cabinet explosions, and ensures the stable operation of the power system.
Smart Images
Figure CN224021328U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of electrical equipment production, specifically related to a switch cabinet with arc fault pressure release top plate. BACKGROUND
[0002] In the power system, the safety and reliability of power equipment always stand in the first place, but in the long-term actual operation of switch equipment, the change of surrounding environment, the decline of insulation performance and the misoperation will cause arc fault. When internal arc fault occurs in the switch cabinet, strong power and high temperature arc will be generated, and the gasification phenomenon of insulation material and metal material will also be caused, which will cause the temperature and pressure of the gas in the cabinet to rise sharply. If the switch cabinet cannot release pressure in time, it will explode due to the inability to withstand the internal pressure, which will affect the stable operation of the whole power system and cause harm to the surrounding equipment and operators. SUMMARY
[0003] The utility model aims at overcoming the above technical problems, and provides a switch cabinet with arc fault pressure release top plate.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of a switch cabinet with arc fault pressure release top plate, which comprises a switch cabinet body, a pressure relief chamber is arranged on the top of the switch cabinet body, the pressure relief chamber is communicated with the inside of the switch cabinet body, a pressure relief opening is formed on the top of the pressure relief chamber, a pressure relief top plate is arranged on the pressure relief opening, one end of the pressure relief top plate is fixed on the top of the switch cabinet body by screws, and the other end is connected with the switch cabinet body by plastic screws.
[0005] Further, the pressure relief top plate comprises a fixed end and a pressure relief movable end, the fixed end is fixed on the top of the switch cabinet body by the screws, the pressure relief movable end is connected with the switch cabinet body by plastic screws, and the connection between the fixed end and the pressure relief movable end is movably connected by a flexible connecting line.
[0006] Further, when the pressure relief movable end opens the pressure relief opening, the included angle between the pressure relief movable end and the fixed end is α, and α≤90°.
[0007] Further, a reinforcing plate is connected to the fixed end, one end of the reinforcing plate is connected to the top surface of the fixed end, and the other end is connected with the switch cabinet body.
[0008] Further, a plurality of first pressure relief holes are arranged on the pressure relief top plate and communicated with the inside of the pressure relief chamber, and a bridge-shaped protrusion is fixed on the top of the pressure relief top plate at the first pressure relief hole.
[0009] Further, a plurality of second pressure relief holes are formed at both ends of the pressure relief chamber.
[0010] From the above description of the utility model, compared with the prior art, the switch cabinet with arc fault pressure release top plate provided by the utility model has the following advantages:
[0011] 1、 the utility model discloses one end of pressure release top plate is fixed in switch cabinet body top through screw, and the other end is connected with switch cabinet body through plastic screw, and plastic screw makes the pressure reduction of pressure release top plate, when the arc fault of switch cabinet body inside is produced, can quickly rush open plastic screw, makes pressure release opening be opened quickly, realizes quick pressure relief, effectively reduces the pressure in cabinet body, avoids the pressure in cabinet body is too strong, leads to the place such as instrument installation at the thinnest place of cabinet body, such as front door board, and hurts operating personnel.
[0012] 2、 the utility model discloses the connecting place of fixed end and pressure release movable end of pressure release top plate is movably connected through flexible connecting line, can make pressure release movable end be pushed open simultaneously and also not with open door cabinet body completely separate, avoids hurting operating personnel. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is structural schematic diagram of the utility model pressure release opening unopened state;
[0014] Figure 2 It is structural schematic diagram of the utility model pressure release opening opening state;
[0015] Figure 3 It is Figure 2 The enlarged view of mark A. DETAILED DESCRIPTION
[0016] The technical scheme in the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the utility model.
[0017] Refer to Figures 1-3As shown, a switch cabinet with arc fault pressure release top plate, including switch cabinet body 1, the top of the switch cabinet body 1 is provided with pressure relief chamber 2, the pressure relief chamber 2 is communicated with the inside of switch cabinet body 1, the top of the pressure relief chamber 2 is provided with pressure relief opening 3, the pressure relief opening 3 is detachably covered with pressure relief top plate 4, one end of the pressure relief top plate 4 is fixed on the top of the switch cabinet body 1 through screw 5, the other end is connected with the switch cabinet body 1 through plastic screw 6. When the arc fault occurs in the switch cabinet body 1, the arc pressure is ejected from the pressure relief opening 3 to pop the plastic screw 6 of the pressure relief top plate 4, the pressure relief movable end of the pressure relief top plate 4 is bent upwards along the flexible connecting line, the pressure relief opening 3 releases the pressure in the switch cabinet body 1, the arc generated by the arc fault is released, and the harm to the equipment and personnel is greatly reduced.
[0018] The pressure relief top plate 4 includes a fixed end 41 and a pressure relief movable end 42, the fixed end 41 is fixed on the top of the switch cabinet body 1 through the screw 5, the pressure relief movable end 42 is connected with the switch cabinet body 1 through the plastic screw 6, the connection between the fixed end 41 and the pressure relief movable end 42 is movably connected through the flexible connecting line 7, so that the pressure relief movable end 42 can open and close the pressure relief opening 3, when the pressure relief movable end 42 opens the pressure relief opening 3, the included angle between the pressure relief movable end 42 and the fixed end 41 is α, α≤90°.
[0019] The fixed end 41 is connected with a reinforcing plate 8, one end of the reinforcing plate 8 is connected to the top surface of the fixed end 41, and the other end is connected with the switch cabinet body 1, further strengthening the connection between the fixed end 41 and the switch cabinet body 1, preventing the entire pressure relief top plate 4 from being opened and completely separated from the switch cabinet body 1 when the arc pressure is released, and injuring the operator.
[0020] A plurality of first pressure relief holes 9 are arranged on the pressure relief top plate 4 and communicated with the inside of the pressure relief chamber 2, a bridge-shaped protrusion 10 is fixed on the top of the pressure relief top plate 4 at the first pressure relief hole 9, the bridge-shaped protrusion 10 is a U-shaped structure, including a first flow guide part and a second flow guide part integrally fixed to the first flow guide part, the second flow guide part is fixed to the top surface of the pressure relief top plate 4 at the two sides of the first pressure relief hole 9, through the bridge-shaped protrusion 10, the vertical flow direction of the gas flowing out of the first pressure relief hole 9 can be converted into horizontal left and right flow, avoiding the gas impact injury to the operator in front of the cabinet.
[0021] A plurality of second pressure relief holes 11 are arranged at both ends of the pressure relief chamber 2 for shunting and heat dissipation of the gas flowing out.
[0022] The above is only a few specific embodiments of the present application, but the design concept of the present application is not limited thereto, any non-essential modification of the present application using this concept shall be regarded as an infringement of the protection scope of the present application.
Claims
1. A switchgear with an arc fault pressure relief top plate, characterized in that: The device includes a switch cabinet body, and a pressure relief chamber is provided on the top of the switch cabinet body. The pressure relief chamber is connected to the interior of the switch cabinet body. A pressure relief opening is provided on the top of the pressure relief chamber. A pressure relief top plate is detachably covered on the pressure relief opening. One end of the pressure relief top plate is fixed to the top of the switch cabinet body by screws, and the other end is connected to the switch cabinet body by plastic screws.
2. A switchgear with an arc fault pressure relief top plate according to claim 1, characterized in that: The pressure relief top plate includes a fixed end and a pressure relief movable end. The fixed end is fixed to the top of the switch cabinet body by the screw, and the pressure relief movable end is connected to the switch cabinet body by the plastic screw. The connection between the fixed end and the pressure relief movable end is movably connected by a flexible connecting line.
3. A switchgear with an arc fault pressure relief top plate according to claim 2, characterized in that: When the pressure relief movable end opens the pressure relief opening, the included angle between the pressure relief movable end and the fixed end is α, where α ≤ 90°.
4. A switchgear with an arc fault pressure relief top plate according to claim 2, characterized in that: A reinforcing plate is connected to the fixed end, with one end of the reinforcing plate connected to the top surface of the fixed end and the other end connected to the switch cabinet body.
5. A switchgear with an arc fault pressure relief top plate according to claim 1, characterized in that: The pressure relief top plate is provided with a plurality of first pressure relief holes communicating with the interior of the pressure relief chamber, and a bridge-shaped protrusion is fixed to the top of the pressure relief top plate at the first pressure relief hole.
6. A switchgear with an arc fault pressure relief top plate according to claim 1, characterized in that: Several second pressure relief holes are provided at both ends of the pressure relief chamber.