Mixed gas charging device for high-voltage electrical equipment

A technology for high-voltage electrical equipment and mixed gas, which is applied to equipment, mechanical equipment, gas/liquid distribution and storage in pressure vessels, etc. It can solve the problem of not being able to mix and inflate a large amount at one time, and achieve easy implementation and simple pipelines. , the effect of reducing labor intensity
CN103591452BActive Publication Date: 2016-05-04STATE GRID CORP OF CHINA +2
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
STATE GRID CORP OF CHINA
Publication Date
2016-05-04

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Abstract

The invention discloses a mixed gas charging device for high-voltage electrical equipment. The mixed gas charging device comprises at least two gas charging branches with gas inlet ends and gas outlet ends, wherein each gas charging branch is sequentially provided with a pressure regulating unit and a gas charging unit from the inlet end to the outlet end; each gas charging unit comprises a first throttling valve, a gas flowmeter and a gas charging electromagnetic valve which are sequentially arranged in series, wherein the gas charging electromagnetic valve is connected to the gas outlet end of each gas charging branch, and an air cylinder is connected to the gas charging branch located between the first throttling valve and the gas charging electromagnetic valve. The mixed gas charging device for the high-voltage electrical equipment comprises the at least two gas charging branches with the gas inlet ends and the gas outlet ends; a multi-branch parallel gas charging way is adopted so that a great deal of mixed gas can be charged once; the throttling valves, the gas flowmeters, the gas charging electromagnetic valves and the air cylinders are combined to control the gas charging flow, so that the gas charging proportion of various gases can be precisely controlled; and the mixed gas charging device is easy to implement, the labor intensity of workers can be alleviated and the pipeline is simple.
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Description

technical field

[0001] The invention belongs to the field of a mixed gas inflator for high-voltage electrical equipment, and relates to a mixed gas inflator for high-voltage electrical equipment. Background technique

[0002] Sulfur hexafluoride gas has become one of the most promising insulation and arc extinguishing media due to its good insulation properties, and is widely used in the field of power transmission and distribution equipment, such as circuit breakers (GCB), combined electrical appliances (GIS), transformers (GIT), cables (GIC), etc., but sulfur hexafluoride gas also has shortcomings as an insulating medium, such as being sensitive to the uniformity of the electric field, and can only show its advantages in a uniform or slightly uneven electric field. Under the action of electric arc, it can decompose toxic gas arbitrarily, and the liquefaction temperature is relatively high, at (3~4)*10 5 It is easier to liquefy under Pa; its price is relatively high, which...

Claims

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