Whole-series oil-free SF6 gas recovering and filling device
A gas recovery and inflation device technology, applied in gas/liquid distribution and storage, pipeline systems, mechanical equipment, etc., can solve problems such as failure of the oil-return prevention solenoid valve that cannot be ruled out, and achieve manpower saving, great economic and social benefits, Maintenance simple effect
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[0015] The present invention is described in further detail below in conjunction with accompanying drawing:
[0016] see figure 1 , a full series of oil-free SF6 gas recovery inflation device of the present invention, including the first and second vacuum pumps 1 and 2, the first and second ball valves V1 and V2, the first and second check valves V21 and V22, and a negative pressure recovery machine 3. Compressor 4, solenoid valve V31, safety exhaust valve V41 and pipelines; the inlets of the first and second ball valves V1 and V2 are connected through pipelines, the outlet of the first ball valve V1 is connected to the suction end of the first vacuum pump 1, the first The exhaust end of the vacuum pump 1 is connected to the suction end of the second vacuum pump 2 through a pipeline, and the intake end of the safety exhaust valve V41 is connected to the pipeline between the first and second vacuum pumps 1 and 2 through a pipeline. The exhaust end is emptied; the outlet of the...
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