A Gas Insulated Switchgear Based on In vivo Adsorption

Abstract

The invention discloses a fluorocarbon mixed gas insulation switch device based on in vivo adsorption. The insulation switch device is a sealed container (1), wherein the sealed container (1) is packaged with sealed insulation gas. At least one pair of electric contact electrodes is packaged in the sealed container (1). Particulate adsorption electrodes (8, 14), a particulate collecting device (6) and an adsorption device (15) are further packaged in the sealed container (1). The insulation gas is fluorocarbon gas which is mixed with carbon. The articulate adsorption electrodes (8, 14) are a pair of dedusting electrodes and are respectively fixed on two sides of the inner walls of the sealed container (1). Center lines of the dedusting electrodes and center lines of the electric contact electrodes are mutually perpendicular. The particulate collecting device (6) is installed below a positive polarity electrode of the dedusting electrodes to collect particulates, wherein the particulates are dropped from the positive polarity electrode. The gas insulation device is further provided with the adsorption device. The adsorption device is installed on the top of the inner surface of the sealed container and is used for adsorbing low molecular weight gas, wherein the low molecular weight gas is produced by fluorocarbon mixed gas decomposition or reaction in the sealed container.

Description

technical field [0001] The invention relates to a switchgear using carbon-containing gas as an insulating medium, in particular to a switchgear using fluorocarbon gas as a medium. Background technique [0002] SF 6 Gas has good insulation ability, arc extinguishing ability, chemical stability and non-toxicity, so it is widely used in gas-insulated equipment, such as gas-insulated transformers, gas-insulated circuit breakers, gas-insulated transmission pipelines, etc. However, pure SF 6 The gas is very sensitive to the inhomogeneity of the electric field, and requires high processing precision of the equipment; and SF 6 Discharge decomposition products of gases, such as SO 2 f 2 、SOF 2 , SF 4 , SF 2 、H 2 S. SOF 4 etc., are all highly toxic substances, which pose a great threat to personnel health; in addition, SF 6 The greenhouse effect of the gas is so large that its global warming potential (GWP) is about CO 2 23,900 times that of gas, and its lifetime in the atm...

AI Technical Summary

Problems solved by technology

However, there are also the following problems: due to the c-C in the above gas 4 f 8 (octafluorocyclobutane), C 3 f 8 etc. contain carbon elements, so under the arc generated when the current is broken, there is a problem of free carbon being generated during the process of dissociation and recombination of the gas. If the generated carbon is attached to the surface of a solid insulator such as an insulating spacer, May cause a significant reduction in the electrical insulation properties of the part

However, this method only works on a small amount of conductive particles, and is not suitable for gas-insulated equipment that uses carbon-containing mixed gases as insulation and arc-extinguishing media.

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