sf6 electrical equipment automatic online gas supply device

Abstract

The invention discloses an automatic on-line gas supplement unit for SF6 electrical equipment, and relates to the technical field of the SF6 electrical equipment. The automatic on-line gas supplement unit comprises an execution unit, a control unit and a power supply. The execution unit comprises an electronic control gulp valve, a copper tube, a first pipeline connector, a first pressure sensor, a three-way valve, an electromagnetic valve, a second pressure sensor, a second pipeline connector, a pressure reducing valve, an SF6 gas cylinder main valve and an SF6 gas cylinder. The control unit comprises a main control module, a wireless transmission module and a relay module. The main control module is electrically connected with the first pressure sensor, the second pressure sensor, the wireless transmission module and the relay module. The relay module is electrically connected with the electronic control gulp valve and a control coil of the electromagnetic valve. The automatic on-line gas supplement unit for the SF6 electrical equipment, provided by the invention, is stable in gas supplement, safe and reliable, can achieve remote automatic control and pressure information acquisition of the gas supplement process, and can greatly lower the cost of maintaining and replacing of the SF6 electrical equipment.

Description

technical field [0001] The present invention relates to SF 6 The field of electrical equipment technology. Background technique [0002] Because of SF 6 The gas has excellent insulation, arc extinguishing, and heat conduction properties. Since the 1960s, the compressed SF 6 The gas has been successfully applied to power equipment such as high-voltage switches. After years of development, SF 6 Circuit breakers, GIS (Sulfur Hexafluoride Enclosed Combined Electrical Appliances), GIL (Gas Insulated Metal Enclosed Transmission Lines) and other electrical equipment have become the mainstream of electrical equipment, SF 6 The application of electrical equipment tends to be extensive. [0003] With the continuous promotion of high-speed rail, smart home, rechargeable cars, and elevators in society, all walks of life have higher and higher requirements for power quality, accounting for the overall SF 6 SF with a very small proportion of electrical equipment 6 The problem of ga...

AI Technical Summary

Problems solved by technology

When SF 6 When the interface of each part of the electrical equipment is not tightly sealed, the shell has sand holes, and the ambient temperature drops suddenly, the SF inside the electrical equipment will 6 Gas pressure will decrease, SF 6 The continuous reduction of gas pressure directly affects the insulation of electrical equipment, SF 6 If the gas pressure is too low, the equipment will be burned, so when the SF 6 Replenishment must be performed after the gas pressure is reduced

Currently, SF 6 The charging process of electrical equipment is all manually operated, and the SF is achieved by manually installing and removing the charging interface. 6 Closing and opening of the check valve of the air chamber prevents automatic control of the inflation work

[0005] Because of SF 6 Electrical equipment away from downtown, SF 6 Electrical equipment low air pressure alarm time is uncertain, SF 6 The gas pressure when the electrical equipment is running cannot be monitored remotely, and sudden SF 6 After the gas pressure is reduced, the work of replenishing gas will bring great difficulties. Emergency personnel and emergency vehicles must be guaranteed 24 hours a day

SF 6 The price of electrical equipment is high, it is difficult to replace the equipment, and the range of industrial and living electricity it carries is wide, and it is not easy to cut off the power. SF 6 Gas replenishment work after the gas pressure is reduced is a sudden, time-determined, troublesome SF 6 Difficulties for electrical equipment maintenance personnel

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