Rotary arc extinguishing mechanism of power circuit breaker

Abstract

The invention belongs to the technical field of power circuit breakers, and particularly relates to a rotary arc extinguishing mechanism of a power circuit breaker. The rotary arc extinguishing mechanism includes a capacitor, electromagnetic rings, thermoelectric units, a first conductive piece, a second conductive piece, a swing rod, a fixed end and a solenoid coil, the conductive pieces and an outer shell form an arc channel, when the swing rod and the fixed end generate an electric arc, since heat of the electric arc itself is high, the electric arc is driven by itself to enter an electromagnetic ring inlet, high heat generated by the electric arc heats a thermoswitch, so that the capacitor and the solenoid coil are energized, the capacitor drives the solenoid coil to generate a toroidal magnetic field, and the electric arc is attracted into the electromagnetic rings; heat of the electric arc is absorbed by thermoelectric units at two sides, and is conducted to the capacitor, and the capacitor is charged and prepares to drive the solenoid coil for the next time. The arc extinguishing mechanism provided by the invention can perform arc extinguishing on the electric arc with huge energy, when the energy of the electric arc is huge, an angle of rotation of the electric arc along the electromagnetic rings increases, at the same time, thermal damage is not caused to equipment under a guiding function of the magnetic field, and thus the rotary arc extinguishing mechanism of the power circuit breaker has a relatively good using effect.

Description

[0001] Technical field [0002] The invention belongs to the technical field of power circuit breakers, in particular to a rotary arc extinguishing mechanism of a power circuit breaker. Background technique [0003] A power circuit breaker is a switch that protects the short circuit, overload and leakage of the circuit in the electric power. It can cut off the circuit when the circuit short circuit, overload and leakage occur. The circuit is connected or closed. A high-temperature and high-heat arc will be generated between the moving contact and the static contact. If the arc cannot be quickly exported and extinguished, it will ablate the contact point between the two contacts and cause serious damage to the power circuit breaker shell. Large damage, more importantly, the arc will delay the disconnection of the circuit, causing irreparable losses; Short circuit is very important. In order to further increase the extinguishing effect on the sudden large current arc, it is ne...

AI Technical Summary

Problems solved by technology

[0003] A power circuit breaker is a switch that protects the short circuit, overload and leakage of the circuit in the electric power. It can cut off the circuit when the circuit short circuit, overload and leakage occur. The circuit is connected or closed. A high-temperature and high-heat arc will be generated between the moving contact and the static contact. If the arc cannot be exported quickly and extinguished, it will ablate the contact point between the two contacts and cause serious damage to the housing of the power circuit breaker. Large damage, more importantly, the arc will delay the disconnection of the circuit, causing irreparable losses; Short circuit is very important

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