Electromagnetic operation mechanism and breaker

Abstract

The invention provides an electromagnetic operation mechanism and a breaker. The electromagnetic operation mechanism comprises a static iron core and a moving iron core arranged in the static iron core, the static iron core comprises a separator plate, the separator plate divides an internal space of the static iron core into upper and lower gas chambers, and closing and opening coils are arrangedin the upper and lower gas chambers respectively; the moving iron core penetrates the separator plate horizontally, and a first sealing part is arranged between the moving iron core and the separatorplate; driving rods are connected to the two ends of the moving iron cores and penetrate the two end walls of the static iron core respectively, and second sealing parts are arranged between the driving rods and the static iron core respectively; and first and second sealing parts are magnetic conductive and sliding sealing. A buffer mechanism changes the gas volume in the upper and lower gas chambers in the movement process of the moving iron core to provide a buffering force opposite to the movement direction, parts of the present electrometric operation mechanism are used to realize buffering, and the mechanism has the advantages of being free of mechanical collision, compact in structure and long in service life.

Description

technical field [0001] This application relates to the technical field of power switches, in particular to an electromagnetic operating mechanism and a circuit breaker. Background technique [0002] The electromagnetic operating mechanism, also known as the electromagnetic operating mechanism, is an operating mechanism that uses the electromagnetic force generated by the current in the closing coil to drive the closing iron core, and hits the four-bar linkage mechanism for closing. The closing energy depends entirely on The size of the closing current. [0003] Based on the characteristics of simple structure, short stroke, and small dispersion of closing and opening operations, the electromagnetic operating mechanism has many applications in the field of high-voltage circuit breakers. In particular, the electromagnetic operating mechanism has the characteristics of small operation dispersion, which makes it have broad application prospects and application potential in the ...

AI Technical Summary

Problems solved by technology

However, the buffering force provided by the oil buffer is positively related to the speed of its movement. When the movable part of the electromagnetic actuator just contacts the oil buffer, it provides the largest buffering force, which will cause a great mechanical shock. Reduce the service life of the electromagnetic operating mechanism

In addition, the oil buffer generally needs to be placed outside the electromagnetic operating mechanism, which increases the design size of the electromagnetic operating mechanism and increases the difficulty of miniaturization of electric equipment

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