A measuring device for opening and closing speed of UHV vacuum circuit breaker

Abstract

The invention discloses an opening and closing speed measuring device for an UHV vacuum circuit breaker. The inner wall of the middle part on the left side of the casing is fixedly connected to the left side of the measuring mechanism, and a protection mechanism is arranged in the casing near the left side of the measuring mechanism. The left side of the protection mechanism is fixedly connected to the left inner wall of the casing, and the inner rear side of the casing is close to the top and bottom of the measuring mechanism and fixedly connected to the rear side of the fixing mechanism. The opening and closing speed measuring device of the UHV vacuum circuit breaker, through the set measuring mechanism, can start the first motor to drive the gear to rotate during the measurement, so that the rack moves to the left, and then fits on the positioning rod through the fixing frame Stable sliding, the speed sensor can be pushed out of the fixed shell during measurement to achieve the purpose of measurement. After the measurement is completed, the first motor drives the gear to rotate in the opposite direction, and the rack moves to the right to drive the speed sensor to retract into the fixed shell, which can achieve good measurement results. At the same time, it can also achieve preliminary protection for the speed sensor.

Description

technical field [0001] The invention relates to the technical field of UHV vacuum circuit breakers, in particular to a measuring device for opening and closing speeds of UHV vacuum circuit breakers. Background technique [0002] "Vacuum circuit breaker" is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are high vacuum; it has the advantages of small size, light weight, suitable for frequent operation, and no maintenance for arc extinguishing. It is widely used in power grid. Vacuum circuit breaker is an indoor power distribution device in 3-10kV, 50Hz three-phase AC system, which can be used for protection and control of electrical equipment in industrial and mining enterprises, power plants, and substations, especially suitable for oil-free, less In places where maintenance and frequent operations are used, circuit breakers can be configured in central cabinets, double-layer cabinets and fixed cabinets to con...

AI Technical Summary

Problems solved by technology

[0003] The existing opening and closing speed device of the vacuum circuit breaker is to directly set the speed sensor near the opening and closing of the vacuum circuit breaker to achieve the purpose of speed measurement. This method is easy to expose the speed sensor and cause damage, and the installation is troublesome. Invention of a vacuum circuit breaker opening and closing speed measurement device

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