Operating mechanism capable of rapidly cutting off circuit and circuit breaker

Abstract

The invention discloses an operating mechanism capable of rapidly cutting off a circuit, and the operating mechanism comprises a working cylinder which is internally provided with an oil path and a main working shaft; an oil tank which is arranged above the working cylinder and used for providing hydraulic oil; a pressurizing assembly which is arranged on the rear side of the working cylinder; a energy storage disc spring set which is assembled on at least one of the left side and the right side of the working cylinder, wherein the movement direction of an energy storage piston of the energy storage disc spring set is perpendicular to the movement direction of the main working shaft; and a control assembly which is arranged on the front side of the working cylinder and comprises a reversing valve, an electromagnetic driving module and a control module. The reversing valve comprises a valve core and is communicated with the working cylinder through an oil duct; the electromagnetic driving module comprises an electromagnetic repulsion disc and a first coil, the electromagnetic repulsion disc is connected with the valve element, and the first coil is located on one side of the electromagnetic repulsion disc; and the control module controls on-off of power supply to the first coil so as to drive the electromagnetic repulsion disc to move. According to the invention, the effect of cutting off the circuit can be achieved more rapidly and reliably, and the safety of the high-voltage circuit breaker is enhanced.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to an operating mechanism for quickly cutting off a circuit and a circuit breaker. Background technique [0002] Traditional high-voltage circuit breakers are all electrical with contacts. The purpose of opening and closing is achieved through the opening and closing actions of the contacts. The opening and closing actions of the contacts need to rely on a certain mechanical operating system to complete. Outside the circuit breaker body The mechanical operating device is called the operating mechanism. [0003] The port technology of ultra-high voltage circuit breakers generally adopts single-break technology or double-break technology. Due to the low voltage and required opening speed of these two technologies, the supporting operating mechanism does not need to have large power. However, if a circuit breaker with more fractures is used, the voltage in it will increase ex...

AI Technical Summary

Problems solved by technology

Therefore, this two-stage conversion control method has some defects in the sensitivity and reliability of the action, and it is difficult to meet the effect of quickly and safely cutting off the circuit in the ultra-high voltage circuit breaker.

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