Mixing insulating gas dynamic gas distribution device

Abstract

The invention discloses a mixing insulating gas dynamic gas distribution device. The device comprises a protective shell body, a gas distribution unit, a gas mixing unit and an air inflation unit, wherein the gas distribution unit, the gas mixing unit and the air inflation unit are arranged in the protective shell body; the gas distribution unit comprises at least one first gas distribution branchused for distributing the first class of gas and at least one second gas distribution branch used for distributing the second class of gas, and the dielectric strength and liquefying temperature of the first class of gas are higher than those of the second class of gas; the air mixing unit is connected with the gas distribution unit and used for mixing the first class of gas and the second classof gas; and the air inflation unit is connected with the gas mixing unit and used for delivering the mixed gas to electrical equipment or experimental equipment after pressurization. The mixing insulating gas dynamic gas distribution device has the advantages that the structure is simple, the mixing efficiency is high, a mixing chamber is merged with a buffer standing chamber, the exhausted air quantity during the air inflation can be reduced, and the mixed gas distribution of three ways of gas or above can be achieved.

Description

technical field [0001] The invention relates to the technical field of power systems, in particular to a dynamic gas distribution device for mixed insulating gas. Background technique [0002] Gas insulation / arc extinguishing has good self-recovery ability, and has the advantages of stable permittivity, small dielectric loss, non-flammable, non-explosive, good chemical stability, no aging, and cheap price, so gas insulation / arc extinguishing medium is widely used in in electrical equipment. Commonly used gas insulating materials include air, nitrogen, hydrogen, carbon dioxide, sulfur hexafluoride, etc. Recently, the gas insulating media with high dielectric strength that have received attention include trifluoroiodomethane, octafluorocyclobutane, fluorinated nitrile and fluorinated ketone. gas etc. [0003] However, the above-mentioned high dielectric strength gases have high liquefaction temperatures, and they need to be mixed with buffer gases such as air and carbon diox...

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Problems solved by technology

[0003] However, the above-mentioned high dielectric strength gases have high liquefaction temperatures, and they need to be mixed with buffer gases such as air and carbon dioxide in research and application; in addition, when sulfur hexafluoride gas is used in alpine regions, due to the low outdoor temperature , the gas faces the problem of liquefaction when it is applied under high inflation pressure in power equipment, and it also needs to be filled with a certain amount of buffer gas such as nitrogen or carbon tetrafluoride

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