Multi-plate high-thermal-conductivity high-voltage vacuum circuit breaker

Abstract

The invention belongs to the field of circuit breakers, and particularly relates to a multi-plate high-thermal-conductivity high-voltage vacuum circuit breaker which comprises a circuit breaking box, the front face of an inner cavity of the circuit breaking box is rotationally connected with a transparent cover plate through an opening, the right side of the transparent cover plate is connected with the right side of the front face of the inner cavity of the circuit breaking box in a clamped mode, an external telegraph pole is fixedly connected to the outer surface of the circuit breaking box, the bottom end of the external telegraph pole penetrates through an inner cavity of the circuit breaking box, and rotating clamping plates are fixedly connected to the two sides of the outer surface of the circuit breaking box. Under a normal condition, an inner connecting pipe seals a heating part, and a separate device is used for heat dissipation and cooling, so that effective heat conduction and heat dissipation are performed on the high-voltage circuit breaker in a targeted manner, and a heating source is prevented from heating the interior of the device, the temperature of the vacuum arc-extinguishing chamber is kept at a certain constant value and a power-off critical point of the vacuum arc-extinguishing chamber is kept, unchanged, in case of single-path short circuit, the temperature of the vacuum arc-extinguishing chamber rises sharply, the inner connecting pipe is disconnected, and normal work of equipment is not affected.

Description

technical field [0001] The invention belongs to the field of circuit breakers, in particular to a multi-plate high heat conduction high-voltage vacuum circuit breaker. Background technique [0002] High-voltage vacuum circuit breaker is a kind of high-voltage switchgear widely used in distribution network. Because it can reliably extinguish the arc when it is frequently broken, it has high safety. It can be used as electrical equipment in industrial and mining enterprises, power plants, and substations. It is used for protection and control, especially suitable for places requiring oil-free, less maintenance and frequent operation. [0003] Because the existing high-voltage circuit breakers are easily affected by high temperature, the existing equipment usually installs a radiator at the static end of the vacuum interrupter, which needs to be equipped with a separate power supply system. The installation is more troublesome and the heat dissipation effect is limited, while t...

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Problems solved by technology

[0003] Because the existing high-voltage circuit breakers are easily affected by high temperature, the existing equipment usually installs a radiator at the static end of the vacuum interrupter, which needs to be equipped with a separate power supply system. The installation is more troublesome and the heat dissipation effect is limited, while the high-voltage circuit breaker generates heat There are many components, and the existing equipment cannot effectively conduct heat and dissipate heat for the high-voltage circuit breaker in a targeted manner. This leads to the fact that when the high-voltage circuit breaker is working, the heat emitted by other internal devices will increase the temperature of the vacuum interrupter, making the vacuum The cut-off critical point of the arc extinguishing chamber is lowered, which will have a certain impact on the normal operation of the equipment

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