Automatic detection device for insulated gas of single-hole sulfur hexafluoride electrical equipment

Abstract

The invention discloses an automatic detection device for an insulated gas of single-hole sulfur hexafluoride electrical equipment. The automatic detection device comprises a control system, a gas chromatographic analyzer and a gas path system, wherein the gas path system comprises a gas storage tank, a vacuum pump and a compression pump; the gas storage tank, the vacuum pump and the compression pump are sequentially connected with one another by a pipeline along a gas flow direction; a gas inlet end and a gas outlet end of the gas path system are connected with each other through a three-way valve; the three-way valve forms a sample inlet of the gas path system; gas inlet and outlet of the gas chromatographic analyzer respectively pass through the three-way valve and are connected with the pipeline of the gas path system; the gas chromatographic analyzer and the gas path system are connected through reversing of two three-way valves; a gas enters the gas chromatographic analyzer to finish detection; and the control system controls opening and closing of the three-way valves, the vacuum pump and the compression pump. The detection device can achieve automatic sampling detection of the insulated gas of the single-hole SF6 electrical equipment, and can finish automatic recharging of the sampled gas.

Description

technical field [0001] The invention relates to gas detection equipment, in particular to an automatic detection device for insulating gas of single-hole type sulfur hexafluoride electrical equipment. Background technique [0002] With the rapid development of the power industry, SF 6 The amount of electrical equipment continues to increase. to SF 6 Gas quality monitoring is increasingly important. Pure SF 6 Gas is an ideal insulating medium. However, under the action of arc, spark discharge, high temperature and other factors, SF 6 The gas is easy to ionize and decompose, and its decomposition products react with moisture and oxygen in electrical equipment, mainly producing SO 2 、H 2 S, HF and other acidic substances, and CF 4 、CS 2 , SO 2 f 2 highly toxic and corrosive substances. By detecting SF 6 These decomposed substances of gas are analyzed by SF 6 Gas quality, and then judge the potential fault type of electrical equipment, avoid the expansion of faults...

AI Technical Summary

Problems solved by technology

Both sampling methods need to manually connect the gas sampling tube to the SF 6 Connection of the gas extraction hole of the electrical equipment, manual opening of the SF 6 The gas switching valve of electrical equipment is cumbersome to operate

In addition, in order to ensure the representativeness of the sampled gas, the amount of gas collected is generally large, and a large amount of gas discharge during operation and detection will cause harm to personnel and environmental pollution, and also affect the SF 6 Insulation properties of electrical equipment

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