Driving operation mechanism of breaker

Abstract

The invention discloses a driving operation mechanism of a breaker. The mechanism comprises an outer shell, a static stub is arranged at the bottom of the outer shell and is a closed type cavity, and a static iron core is arranged inside the static stub. A wire ring I and a wire ring II are wound around the static iron core and are contrary in winding direction. A conduction shaft is arranged at the top of the outer shell and can move vertically, and the conduction shaft is a closed type cavity. A conduction iron core is arranged inside the conduction shaft, a wire ring III is wound around the conduction iron core, a left iron core is arranged on the upper portion of the inner wall of the left side of the outer shell, and a wire ring IV is wound around the left iron core. A right iron core is arranged on the upper portion of the inner wall of the right side of the outer shell, a wire ring V is wound around the right iron core, and the top end of the left iron core and the top end of the right iron core are sequentially connected with springs and bolt pins. A left baffle and a right baffle are arranged at the top of the outer shell and each provided with a through hole used in cooperation with the corresponding bolt pin. Clamping holes are formed in the outer wall of the conduction shaft and correspond to the through holes. The driving operation mechanism has the advantages of being simple in structure and eliminating adverse effects on the breaker by demagnetization of permanent magnets.

Description

technical field [0001] The invention relates to an electrical device, in particular to a circuit breaker driving operation mechanism. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. The driving mechanism of the circuit breaker is used to drive the vacuum interrupter to achieve the purpose of current conduction and disconnection. Most of the driving operating mechanisms currently used are permanent magnet driving operating mechanisms, but as the use time increases, the magnetism of the permanent magnets continues to decrease. Because the opening, closing, opening and closing of the circuit breaker are all related to the permanent magnet There is a direct correlation, so the decline in the magnetic properties of the permanent magnets seriously affects the performance of the circui...

AI Technical Summary

Problems solved by technology

Most of the driving operating mechanisms currently used are permanent magnet driving operating mechanisms, but as the use time increases, the magnetism of the permanent magnets continues to decrease. Because the opening, closing, opening and closing of the circuit breaker are all related to the permanent magnet There is a direct correlation, so the drop in permanent magnet magnetism seriously affects the performance of the circuit breaker

In addition, the shorter the arc extinguishing time of the circuit breaker, the better the performance, which requires the rapid opening of the drive operating mechanism. However, the opening speed of the existing permanent magnet operating mechanism is not ideal.

Images