Automatic reclosing device for circuit breaker

Abstract

The invention relates to an automatic reclosing device of a circuit breaker. The device comprises a shell, a transmission mechanism and an electronic control mechanism, wherein the transmission mechanism comprises a forward and reverse rotating motor, a bevel gear, a jogging part, an energy storage operating mechanism, a shaft, a handle and a transmission arm, a linkage stopping block is arranged on one side, opposite to the clockwise direction of the transmission arm, of the handle, the handle and the transmission arm are in linkage in the clockwise direction and freely matched in the anticlockwise direction, the energy storing operating mechanism comprises a spring mechanism and a lock catch, an energy storage stopping block matched with the spring mechanism is arranged on the lock catch, a gear is arranged on an output shaft of the forward and reverse rotating motor, the gear is provided with the bevel gear in a linkage mode, the bevel gear is rotationally fixed to a shell, a second torsion spring matched with the bevel gear is arranged at the fixed end of the bevel gear, the bevel gear is connected to the lower end of the spring mechanism through a first connecting rod, and the upper end of the spring mechanism is connected to the transmission arm through a second connection rod. The device has the advantages of being simple in structure and stable in work.

Description

technical field [0001] The invention specifically relates to an automatic reclosing device for a circuit breaker. Background technique [0002] At present, with the development of my country's smart grid, under the premise of requiring the safe operation of the grid, it is more and more urgent to realize the intelligent control of electrical appliances. Circuit breakers are widely used in the existing low-voltage power distribution system to protect the lines in the power supply system from damage. When faults such as phase-to-phase short circuit and short-term power failure occur, the circuit breaker will automatically trip to achieve the task of protection. Although the technical solution has the function of protecting the power line and its equipment, when the fault is eliminated, the user or staff needs to manually close the switch to transmit power. This kind of circuit breaker has the defects of not being able to transmit power in time and wasting manpower, so it canno...

AI Technical Summary

Problems solved by technology

Circuit breakers are widely used in the existing low-voltage power distribution system to protect the lines in the power supply system from damage. When faults such as phase-to-phase short circuit and short-term power failure occur, the circuit breaker will automatically trip to achieve the task of protection. Although the technical solution has the function of protecting the power line and its equipment, when the fault is eliminated, the user or staff needs to manually close the switch to transmit power. This kind of circuit breaker has the defects of not being able to transmit power in time and wasting manpower, so it cannot adapt to the power grid. Intelligent development needs

However, due to the unreasonable design of the transmission mechanism of the existing circuit breaker with automatic reclosing device, when the circuit breaker needs to trip quickly when the circuit breaker fails, the transmission mechanism of the circuit breaker is not sensitive, thus causing serious safety hazards and cannot Ensure the user's electricity safety

Images