Circuit breaker blowing interrupter

Abstract

The invention discloses a blowing arc extinguishing chamber of a breaker. The blowing arc extinguishing chamber comprises a static component, a moveable component, a sliding component and an insulated internal cylinder, wherein the sliding component is assembled on the insulated internal cylinder, one end of the moveable component is installed in the insulated internal cylinder, and the other end passes through the sliding component; a closed space is formed among the moveable component, the sliding component and the insulated internal cylinder. The blowing arc extinguishing chamber is characterized in that three-way absorption and two-way blowing of the arc extinguishing gas and the electric arc extinguishing can be realized according to the volume change of the closed space formed among the moveable component, the sliding component and the insulated internal cylinder, so that the arc is efficiently extinguished. In comparison with an existing technology, the beneficial effect of blowing arc extinguishing chamber is that the closed space can be quickly and fully filled with arc extinguishing gas so that reliable and enough arc extinguishing gas can be provided to disconnect the breaker; a two-way blowing arc extinguishing manner is adopted so that the electric arc can be quickly and effectively extinguished; the blowing arc extinguishing chamber can be greatly reduced in volume and has the advantages of low gas pressure, energy conservation, environment protection, and long electrical and mechanical service life, thus the chamber can operate at low air pressure.

Description

technical field [0001] The invention relates to an arc extinguishing chamber of a circuit breaker, more specifically to a gas blowing arc extinguishing chamber of a circuit breaker. Background technique [0002] The existing commonly used circuit breaker arc extinguishing chambers mostly use vacuum arc extinguishing circuit breaker arc extinguishing chambers. The disadvantages of this kind of circuit breaker arc extinguishing chambers are: the circuit breaker arc extinguishing chamber requires a high degree of vacuum; the opening distance of the dynamic and static contact devices Relatively small, generally speaking, the opening distance is between 8-16 mm, and the requirements for opening and closing speed and synchronism are high, and overvoltage is easy to occur when breaking capacitive and inductive currents; in order to ensure reliable breaking of vacuum circuit breakers, often need Add an isolating switch at the upper or lower port of the circuit breaker to ensure a la...

AI Technical Summary

Problems solved by technology

[0002] The existing commonly used circuit breaker arc extinguishing chambers mostly use vacuum arc extinguishing circuit breaker arc extinguishing chambers. The disadvantages of this kind of circuit breaker arc extinguishing chambers are: the circuit breaker arc extinguishing chamber requires a high degree of vacuum; the opening distance of the dynamic and static contact devices Relatively small, generally speaking, the opening distance is between 8-16 mm, and the requirements for opening and closing speed and synchronization are high, and overvoltage is easy to occur when breaking capacitive and inductive currents; in order to ensure reliable breaking of vacuum circuit breakers, often need Add an isolating switch at the upper or lower port of the circuit breaker to ensure a large breaking distance

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