Method and system for detecting SF6 gas in high-voltage insulation equipment

Abstract

The invention provides a method and a system for detecting SF6 gas in high-voltage insulation equipment, which relates to the technical field of electrical equipment fault gas detection. The key points of the technical scheme comprise the steps that S1, aqueous solution is added in a first detection box, pH test paper is fixedly installed in the first detection box, and the pH test paper is soakedin the aqueous solution; S2, the first detection box is communicated to a sealing connection port of the high-voltage insulation equipment, and a pipeline is in sealing connection with the high-voltage insulation equipment; S3, a camera is installed in the first detection box, photographing is carried out on the pH test paper, and a photo is transmitted to a display terminal; S4, the pH test paper in the photo is compared with a standard colorimetric card. The gas flows into the first detection box, the SF6 gas and the decomposition product of the SF6 gas are partially dissolved in the aqueous solution, so that the pH value of the aqueous solution is changed. The pH test paper is compared with a standard colorimetric card, so that whether SF6 gas leaks or not is judged.

Description

technical field [0001] The present invention relates to the technical field of electrical equipment fault gas detection, more specifically, it relates to a SF in high-voltage insulation equipment 6 Gas detection method and system. Background technique [0002] Sulfur hexafluoride (SF 6 ) is used as an insulating material for high-voltage switches, large-variable transformers, high-voltage cables and gases in the electrical industry. During operation of these devices, the SF inside the device 6 The gas will be decomposed under the action of high temperature arc, and its decomposition includes sulfur-containing compounds and other compounds, such as SF 4 (sulfur tetrafluoride), S 2 f 2 (sulfur fluoride), SOF 2 (Thionyl fluoride) and other gases, so quantitative detection of SF 6 The gas and its decomposition products can be used to diagnose faults and defects in electrical equipment. [0003] For example, the Chinese patent whose publication number is CN105865556A disc...

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Problems solved by technology

[0005] However, this detection method requires more equipment in the detection process, such as gas flow rate detector, ambient thermometer, SF 6 Equipment such as gas pressure gauges, data processors, and industrial computers that convert gas flow rates according to flow rates have relatively high detection costs, and it is necessary to develop a method that can detect SF in high-voltage insulation equipment. 6 A simple detection method for gas leakage, thereby reducing SF 6 Gas Leak Detection Costs

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