Sulfur hexafluoride reclaiming and recharging device

A technology of sulfur hexafluoride and air separation unit, which is applied in the direction of sulfur and halogen compounds to achieve the effect of facilitating mobile operations, reducing frequent manual operations, and improving speed and capacity
CN101125643AActive Publication Date: 2008-02-20ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER
Publication Date
2008-02-20

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Abstract

The invention relates to a gas recovery and reinflation device, which is a recovery and reinflation device of the sulfur hexafluoride gas used for the electric device, comprising a gas line part and an electric control part; wherein, the gas line part includes a hand valve, a normal closed electromagnetic valve, a filter decompressing valve, a decompressing valve, a safety valve and a one-way valve, furthermore, a digital display vacuum meter, an air pressure meter, a vacuum pump, a buffer tank, an absorbing device, a cooling fan, an air dividing device and recovery reinflation and vacuum extraction gas line formed by an air compressor; whereas, the electric control part comprises an alternating contactor, a power relay and a trapezoid control circuit formed by a programmable controller and so on. Besides, by controlling the alternating contactor and the power relay, the opening and the closing of partial valves of the gas line and the work state of the air compressor and vacuum pump are adjusted, realizing the process of recovery and reinflation of the sulfur hexafluoride and the vacuum extraction. Avoiding the possibility of the accident caused by frequent hand operation in the existing recovery device, the invention provides a new small recovery and reinflation device which has easy operation and can perform primary process to the sulfur hexafluoride gas.
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Description

technical field

[0001] The invention relates to a recovery and recharging device for arc extinguishing gas sulfur hexafluoride of electrical equipment. Background technique

[0002] The State Grid Corporation of China has committed to environmental protection obligations to the society, requiring that the arc-extinguishing gas sulfur hexafluoride in high-voltage electrical circuit breakers and high-voltage current transformers must be recycled and processed before being recharged and used, and the greenhouse gas will no longer be directly discharged into the atmosphere.

[0003] At present, the recovery and recharging equipment produced at home and abroad all adopt large liquid storage tanks. During the recovery and treatment process, the sulfur hexafluoride gas in the liquid storage tank needs to be divided into steel cylinders with a capacity of about 40L (which can hold about 50kg sulfur hexafluoride) for refilling after treatment. Various types of imported or domestic r...

Claims

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