A ternary gas-insulated switchgear with smell sensing function

Abstract

A ternary mixed gas insulated switchgear with an olfactory perception function, the gas insulated switchgear is a sealed container (1) encapsulated with a ternary mixed gas (2). The ternary mixed gas (2) is composed of warning gas and mixed insulating gas. The warning gas is characterized in that it is colorless, non-toxic, chemically stable, and has a strong pungent odor. The type and mixing ratio of the mixed insulating gas can be reasonably selected according to the actual application scenario. It is recommended but not limited to use C 4 F 7 N / CO 2 mixed composition. The sealed container (1) is a container for holding the ternary mixed gas (2). The sealed container (1) is equipped with a fixed spring (5), a vacuum bubble (6), a spring operating rod (4), a moving contact (8), and a moving contact operating rod (7) for current switch control, A warning gas volatilization container (11) is also provided for storage and volatilization of gas / liquid / solid volatiles.

Description

technical field [0001] The invention relates to a gas-insulated switchgear, in particular to a gas-insulated switchgear using a ternary mixed gas as an insulating medium. Background technique [0002] SF 6 Gas has good insulation performance, arc extinguishing ability and chemical stability, so it is widely used in gas-insulated power transmission and transformation equipment. However, pure SF 6 The gas is very sensitive to the inhomogeneity of the electric field, and requires high processing precision for power transmission and transformation equipment. Meanwhile, SF 6 Discharge decomposition products of gases, such as SO 2 f 2 、SOF 2 、SOF 4 , SF 2 , SF 4 etc., all belong to highly toxic substances, once a leakage occurs, it will pose a great threat to the health of personnel. In addition, pure SF 6 Gas is a kind of asphyxiating gas, which can cause asphyxiation disability or death to humans if inhaled in a certain amount. In addition, the greenhouse effect of S...

AI Technical Summary

Problems solved by technology

However, since the above-mentioned environment-friendly gas contains elements such as C, O, F, and N, the molecules of the environment-friendly gas may will decompose to produce C 3 f 6 , CNCN, CF 3 Toxic substances such as CN

Since most of the decomposition products are colorless and odorless, once a long-term leakage occurs, it will also cause slow damage to human health

At the same time, the leakage of the gas-insulated medium will also lead to a drop in the gas pressure inside the gas-insulated equipment and a significant drop in the insulation level, which in turn will cause insulation faults such as breakdown and surface flashover

In view of the above problems, portable gas inspection equipment cannot realize online monitoring of gas-insulated power transmission and transformation equipment, and leak detection methods such as ultraviolet and infrared spectroscopy have disadvantages such as high cost and too single types of detected gases.

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