Inflatable device and its inflatable method for gis switch

Abstract

An inflatable device and an inflatable method for a GIS switch, including SF 6 The gas cylinder and the inflation pipeline are characterized in that: the first three-way pipe and the second three-way pipe are installed on the inflation pipeline, wherein the first three-way pipe is arranged near the SF 6 The inflation pipeline at the outlet end of the gas cylinder is connected with the air pipeline connected to the purge gas, and an air valve is set on the air pipeline; the second three-way pipe is arranged on the inflation pipeline near the gas inlet end of the GIS switch air compartment, and used to recycle the remaining SF 6 The gas capsules are connected, a capsule valve is provided on the connecting pipeline between the second three-way pipe and the capsule, and a capsule valve is installed between the first three-way pipe and the SF 6 A pressure reducing valve is provided between the gas outlet ends of the gas cylinder, and an air separation valve is provided between the second three-way pipe and the gas inlet end of the GIS switch gas separation. The inflation device of the present invention is simple in structure and easy to use, and the inflation method is easy to operate, safe and environmentally friendly, and effectively solves the problem of air entering the GIS switch and remaining SF during the inflation process. 6 Problems with gas emissions to the atmosphere, applicable to all GIS switches SF 6 Gas inflated.

Description

technical field [0001] The invention relates to a GIS switch SF 6 Inflatable device and inflation method thereof, Background technique [0002] In recent years, with SF 6 Gas is widely used as an insulating medium for electrical equipment. Gas Insulated Switchgear gas-insulated combined electrical equipment (referred to as GIS switch) is a combination of high-voltage components such as busbars, circuit breakers, CTs, PT disconnectors, and lightning arresters. It is also called high-voltage distribution. electric device. GIS switches have the advantages of high reliability and safety, small installation area, long service life, long maintenance cycle, small maintenance workload, wide application range, etc., and are more and more used in substations with voltage levels above 35KV. According to the working principle and working environment, the GIS switch has multiple air compartments inside, which are filled with SF 6 gas. [0003] SF 6 The gas is a colorless, odorless,...

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Problems solved by technology

[0005] Therefore, it is necessary to improve the existing inflation method and design a new SF 6 Gas inflation device to solve the problem that the air in the inflation pipeline enters the GIS switch during the inflation process and the remaining SF of the inflation pipeline after inflation 6 Gas Emissions Atmospheric Issues

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