A supporting device for long-term on-line speed measurement of the main shaft of a vacuum circuit breaker

Abstract

The invention provides a long-term online speed measurement matching device for a main shaft of a vacuum circuit breaker, which relates to the field of high-voltage circuit breakers, and includes a main shaft connecting transition joint, a transmission gear box and a spiral telescopic support rod. The herringbone tooth cylindrical gear, the side wall of the transmission gear box is provided with a transition joint input hole and an angular velocity output hole, the joint output shaft is rotatably installed in the transition joint input hole, and the angular velocity output shaft is rotatably installed in the angular velocity output hole. Through the compact design of the transmission speed measuring device, the limitation of the installation position of the angular velocity sensor is broken, and the angular velocity sensor can be installed in the box to ensure the integrity and airtightness of the box structure. The impact, vibration and other influences caused by the opening and closing action of the circuit breaker on the speed measurement work ensure the long-term stability of the speed measurement work and meet the long-term monitoring needs of the online monitoring system.

Description

technical field [0001] The invention relates to the field of high-voltage circuit breakers, in particular to a supporting device for long-term on-line speed measurement of a main shaft of a vacuum circuit breaker. Background technique [0002] As the link between power generation and power consumption, high-voltage circuit breaker's reliable operation is of great significance to ensure the safety of the power grid. The loss caused by its failure is thousands of times or even tens of thousands of times the price of the equipment itself, so the power sector needs to plan maintenance for equipment outages every year. Since the operation and maintenance personnel cannot grasp the mechanical operation status of the circuit breaker operating mechanism in time, incorrect maintenance, overhaul disintegration and reassembly may introduce new human hidden dangers, resulting in circuit breaker defects or even failures, which will waste a lot of time, manpower and material resources an...

AI Technical Summary

Problems solved by technology

Technical defect: the most direct method of measuring the displacement of the moving contact is to install a linear displacement sensor below it

Due to this installation method, the test can only be carried out after the vacuum circuit breaker is pulled out of the switch cabinet, and continuous online monitoring cannot be carried out when it is located in the switch cabinet or when it is actually connected to the grid, so the real working status of the circuit breaker cannot be measured

Images