Power distribution switchgear with high safety performance

Abstract

The invention discloses a power distribution switchgear with high safety performance, and belongs to the technical field of power distribution switchgears, an outer water cooling pipe is communicated with an inner heat conduction pipe to realize large-range ventilation and heat conduction operation in a cabinet body, a first source extinguishing pipe is arranged on the inner side of the inner heat conduction pipe, and the bottom end part of the first source extinguishing pipe is connected with a second source extinguishing pipe extending to the upper part of a switch assembly. When abnormal high temperature or spontaneous combustion occurs at the switch assembly, the ventilating fan is automatically switched off, an air inlet source is blocked, then a plurality of hot melting strips on the second source extinguishing pipe are subjected to hot melting, the fire extinguishing agent in the second source extinguishing pipe overflows, and meanwhile a bearing piston is separated from the top of the first source extinguishing pipe due to the fact that the top loses magnetism due to the influence of high temperature; the bearing piston falls under the action of gravity to press source extinguishing gas in the first source extinguishing pipe into the second source extinguishing pipe, the fire extinguishing agent in the second source extinguishing pipe is driven to be sprayed out to cover the switch assembly and the cable, the source extinguishing gas and the fire extinguishing agent are matched with each other, the source extinguishing area is enlarged, and the source extinguishing effect is improved.

Description

technical field [0001] The invention relates to the technical field of power distribution switchgear, and more specifically, relates to a power distribution switchgear with high safety performance. Background technique [0002] The power distribution cabinet is the final equipment of the power distribution system. The power distribution cabinet is used in the occasions where the load is relatively scattered and the circuit is small. It distributes the electric energy of a certain circuit of the upper-level power distribution equipment to the nearest load. Since there are many electrical components inside the power distribution cabinet, it will generate a lot of heat during operation. When the heat accumulates too much, it is not conducive to the normal operation of the power distribution cabinet. [0003] In the prior art, in order to prevent a large amount of heat stored in the cabinet from dissipating, cooling fans are generally installed on the end walls of the cabinet t...

AI Technical Summary

Problems solved by technology

Because there are many electrical components inside the power distribution cabinet, it will generate a lot of heat when it is working. When the heat accumulates too much, it is not conducive to the normal operation of the power distribution cabinet.

[0003] In the prior art, in order to prevent a large amount of heat stored in the cabinet from dissipating, cooling fans are generally installed on the end walls of the cabinet to dissipate heat. The wiring system, that is, for wires and cables, the installation space is narrow, if the installation is too messy, it is not conducive to dissipate the heat from the bundled wires and cables

[0004] Especially for the wiring system close to the switch components, because the switch components themselves will generate heat sources, when the heat dissipation of the two installations is poor, it is easy to accumulate heat inside, and the internal heat is too high to easily cause short-circuit spontaneous combustion of the internal components. Spontaneous combustion generally occurs under continuous high temperature conditions. If the heat is not dissipated in time, spontaneous combustion is likely to occur

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