Intelligent gas filling and supplying device of mixed gas switch

Abstract

The invention discloses an intelligent gas filling and supplying device of a mixed gas switch. The gas supply work of mixed gas switch equipment can be achieved, and the gas supply proportion and amount of mixed gas can be ensured; and accurate and intelligent gas supply work is finished. The intelligent gas filling and supplying device comprises a gas filling pipeline connected with the mixed gasswitch; the gas filling pipeline is provided with a gas filling valve and a data processing unit used for computing the mixed gas amount in sequence; the data processing unit is separately connectedwith a sulfur hexafluoride gas cylinder and a carbon tetrafluoride gas cylinder through gas supply pipelines simultaneously; each gas supply pipeline is provided with a pressure reducing valve and a solenoid valve; the intelligent gas filling and supplying device further comprises a pressure sensor unit, and the two ends of the pressure sensor unit communicate with the gas filling pipeline and a gas circuit of the data processing unit through monitoring pipelines; a contactor unit is integrated in the pressure sensor unit; and the intelligent gas filling and supplying device further comprisesa power module and an air switch on a power supply circuit of the power module, and the power module is used for power supply to the contactor unit, the pressure sensor unit and the solenoid valve.

Description

technical field [0001] The invention relates to a gas replenishing device, which is specifically used for precise and intelligent gas replenishment for mixed gas switchgear. The invention is not only applicable to high-voltage electrical equipment such as circuit breakers, GIS, inflatable cables, and inflatable power transmission pipelines using mixed gas, but also applicable to existing SF6 inflatable equipment to achieve precise and intelligent gas replenishment operations. Background technique [0002] Thanks to SF 6 The gas has good insulation and arc extinguishing properties, and is widely used in high-voltage electrical equipment such as circuit breakers, GIS, inflatable cables, and inflatable transmission pipelines. But at a lower ambient temperature, the SF under a certain pressure 6 The gas will be liquefied, the pressure or density will decrease, and its insulation and arc extinguishing performance will decrease. In order to solve the above problems, the best me...

AI Technical Summary

Problems solved by technology

This method requires gas replenishment personnel to observe the pressure indicator at all times and manually control the opening and closing of the cylinder valve. It is difficult to achieve precise gas replenishment, which affects the efficiency of gas replenishment and the gas mixing ratio. In severe cases, it affects the arc extinguishing and insulation performance of switchgear and reduces equipment Safety and stability

Images