Method and system for analyzing component content of mixed gas in gas insulated switchgear

Abstract

The invention discloses an analysis method and an analysis system for the content of mixed gas components in gas insulation combined electrical equipment, belongs to the technical field of gas chromatographic analysis, and aims to solve the problems that the impurity components in the existing gas insulation combined electrical equipment are many and difficult to detect. The analysis system comprises a sample gas storage device, a carrier gas storage device, six automatic switching valves, a first quantitative loop, a second quantitative loop, a first chromatographic column, a second chromatographic column, a third carrier chromatographic column, a third quantitative loop, a fourth chromatographic column, a fifth chromatographic column, a sixth chromatographic column, a first detector device and a second detector device. The second automatic switching valve and the fourth automatic switching valve are provided with ten connectors, and the first automatic switching valve, the third automatic switching valve, the fifth automatic switching valve and the sixth automatic switching valve are provided with four connectors. According to the invention, 18 gas-phase components are completely separated by utilizing multiple paths of carrier gas and multiple chromatographic columns, so that the separation degree of the 18 gas-phase components is ensured, and meanwhile, the accuracy is also ensured.

Description

technical field [0001] The invention belongs to the technical field of gas chromatographic analysis, in particular to an analysis method and an analysis system for the content of mixed gas components in gas-insulated composite electrical appliances. Background technique [0002] At present, gas-insulated composite electrical appliances are filled with sulfur hexafluoride gas, but due to the current environment of double-carbon goals of carbon neutralization, a certain amount of carbon tetrafluoride is usually filled. At the same time, it is necessary to regularly detect the content of various components in the gas-insulated composite electrical system, and judge whether it is operating normally through content detection. Since the impurity components in gas-insulated composite electrical components contain 18 kinds of inorganic or organic substances, and their contents are all at the nmol / monl level, it is necessary to design an analysis method and its analysis system to sol...

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that there are many impurity components in the existing gas-insulated composite electrical appliances and it is difficult to detect them, and to provide an analysis method and analysis system for the content of mixed gas components in the gas-insulated composite electrical appliances

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