Double pole vacuum circuit breaker for outdoor railway

Abstract

The invention provides a bipolar vacuum circuit breaker for an outdoor railway. The circuit breaker comprises two embedded poles; two insulating pull rods; an operating mechanism which is used for driving the insulating pull rods to be switched between a switching-on position and a switching-off position and is provided with a drive rod used for outputting power in a mode of linear movement, wherein the direction of linear movement of the drive rod is parallel to the direction of the linear movement of the insulating pull rods; and a transmission mechanism which comprises two sets of transmission assemblies, wherein the two sets of transmission assemblies are driven by the linear drive of the drive rod to drive the insulating pull rods connected with the transmission assemblies to make linear movement. According to the invention, the two insulating pull rods move independently, and are respectively driven by different transmission assemblies. The damage to one pole cannot affect the other pole, so a manufacturer does not need to adjust the parameters of the two poles at the same time during maintenance, thereby enabling the maintenance to be more convenient.

Description

technical field [0001] The invention relates to the technical field of high-voltage switchgear, in particular to an outdoor double-pole vacuum circuit breaker for railways. Background technique [0002] Bipolar vacuum circuit breakers for outdoor railways are mainly used in traction substations, partition kiosks, switching stations and other places of electrified railways with a voltage level of 27.5kV, as opening and closing load currents, overload currents and short-circuit currents. [0003] In actual use, it is generally hoped that the two poles of the double-pole vacuum circuit breaker for outdoor railways can realize simultaneous closing and opening, which is convenient for operation and control. For this reason, such as figure 1 As shown, the Chinese patent document CN201766039 discloses a single-phase double-pole circuit breaker for electrified railways, including: a fixed frame 13; a transmission box 8 arranged on the fixed frame 13, and a connecting rod transmissio...

AI Technical Summary

Problems solved by technology

Although the above-mentioned single-phase double-pole circuit breaker for electrified railways can realize the simultaneous closing and opening of the two poles, when debugging and disassembling after sales, since the second crank arm assembly 16 must be connected through the first connecting rod and the second connecting rod, The link between the rods is driven, so if one of the poles is damaged and needs to be debugged and disassembled, the other pole also needs to be debugged and disassembled, so that the two poles can be closed and opened at the same time. Sometimes the manufacturer needs to adjust the parameters of the two poles at the same time, which is not convenient for maintenance.

Images