Arc blowing and extinguishing device of switch circuit breaker

Abstract

The invention relates to the technical field of power equipment, and discloses an arc blowing and extinguishing device of a switch circuit breaker, which comprises a mounting seat. A sliding seat is arranged above the left side of the mounting seat, a fixed seat is arranged above the right side of the mounting seat, an insulating layer is arranged at the right part of the inner side of the fixed seat, and an arc chute is fixedly connected to the left side of the insulating layer. A static contact penetrates through the middle of the insulating layer, a limiting plate is arranged in the static contact, a contact piece is arranged on the left side of the limiting static contact, a binding post is arranged at the left end of the sliding seat, a movable contact pin is fixedly connected to the right end of the binding post, and a fixing frame is arranged outside the movable contact pin. According to the arc blowing and extinguishing device of the switch circuit breaker, airflow generated in the arc blowing device passes through the gap between the movable contact pin and the supporting frame, is excited by the electromagnetic coil and then longitudinally blows over the circuit breaking position, compared with a traditional circuit breaker, the arc blowing mechanism is not an active component, the reliability of equipment is greatly improved, and meanwhile the arc extinguishing effect can be effectively improved by longitudinally blowing air to the arc extinguishing gate.

Description

technical field [0001] The invention relates to the technical field of electric power equipment, in particular to an arc blowing and arc extinguishing device for a switch circuit breaker. Background technique [0002] When the circuit breaker disconnects the strong current line, due to the high voltage breakdown of the air, along with the generation of the arc, a short-term gas discharge will occur near the contacts. This discharge phenomenon is extremely unstable and has certain dangers. Therefore, In high voltage lines, arc extinguishing of circuit breakers is very necessary. [0003] Circuit breakers often use arc extinguishing grids and arc extinguishing covers to accelerate arc extinguishing, or use gas blowing to quickly blow out arcs while cooling down, or use other media to fill the contact chamber space. In order to save energy, protect the environment, and reduce costs, most high-voltage circuit breakers now use arc extinguishing grids and arc blowing to achieve t...

AI Technical Summary

Problems solved by technology

In order to save energy, protect the environment, and reduce costs, most high-voltage circuit breakers now use arc extinguishing grids and arc blowing to achieve the best results. However, the existing arc blowing and arc extinguishing devices are easy to install, and the arc blowing mechanism is fixed. During use, short-term overvoltage is often generated, so the arc blowing effect is not ideal

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