A transmission linkage mechanism for series-fractured vacuum circuit breakers

Abstract

The present invention provides a transmission link mechanism for a serial fracture vacuum circuit breaker. The mechanism comprises a power output unit and a transmission distribution unit; the transmission distribution unit comprises three parallel slideways and a connection block slidingly connected with the slideways, the two ends of the connection block are respectively connected with insulation pull bars of arc extinguish chambers, the power output unit generates up-down acting force for the connection block to allow the connection block to move up and down along the three slideways so as to drive the two insulation pull bars to move up and down; the power output unit comprises a push rod, a multi-link mechanism and a buffer mechanism, the multi-link mechanism is connected with the buffer mechanism, and the multi-link mechanism is moved and takes the buffer mechanism as a support to generate upthrust to the push rod and push the connection block to move and uniformly act the closing force and the opening force on the two arc extinguish chambers so as to ensure the requirement of force required by the operation, realize synchronization of the two arc extinguish chambers, transfer the buffer device to the power output end to further ensure the synchronization and stabilization and reliability of the whole transmission device.

Description

technical field [0001] The invention relates to the technical field of electric power system equipment, in particular to a transmission link mechanism for series fracture vacuum circuit breakers. Background technique [0002] At present, vacuum circuit breakers are mostly single-break vacuum circuit breakers. In comparison, the production quantity and application of series break circuit breakers are relatively small. high demands. The series fracture circuit breaker is a single-phase double arc extinguishing chamber structure (the whole machine is three-phase six arc extinguishing chambers). To ensure the "simultaneous" breaking of the two arc extinguishing chambers, the meaning of the two breaks will be lost, and it will become a traditional single break circuit breaker in theory, and overvoltage will be caused by the asynchronous breaking of the two breaks in actual application. Or the breakdown of the arc extinguishing chamber seriously affects the application of series...

AI Technical Summary

Problems solved by technology

The series fracture circuit breaker is a single-phase double arc extinguishing chamber structure (the whole machine is three-phase six arc extinguishing chambers). To ensure the "simultaneous" breaking of the two arc extinguishing chambers, the meaning of the two breaks will be lost, and it will become a traditional single break circuit breaker in theory, and overvoltage will be caused by the asynchronous breaking of the two breaks in actual application. Or the breakdown of the arc extinguishing chamber seriously affects the application of series fracture vacuum circuit breakers; the current single fracture vacuum circuit breaker realizes the transmission through the direct connection between the mechanism connecting rod and the insulating rod. If it becomes double fracture, continue to use the original method For transmission, two sets of mechanism connecting rods are required. For the mechanism, it is equivalent to adding another spring mechanism. This is difficult to realize, because it is impossible to apply two spring mechanisms at the same time due to the limitations of installation space, operation mode and many other factors; At the same time, most of the buffer parts of the existing circuit breakers are set at the ends of the insulating rods, and it is not easy to realize complete synchronization of the two insulating rod buffer parts. Rod mechanism, not only to ensure stable power output, but also to ensure that the transmission and distribution units operate synchronously

Images