SF6 Gas Recovery and Filling Device
Darui Electric recommends:
SF6 Gas Recovery and Filling Device Main Configuration:
1. SF6 compressor requirements: CA-0300 hermetic compressor
a: Theoretical displacement: 12m3/h
b: Maximum discharge pressure: 2.5Mpa
c: Minimum suction pressure: 50Kpa
d: Maximum suction pressure: 0.35~0.8 Mpa
e: Power: 2.2KW
f: Power supply: 380V 50HZ
2. Vacuum pump: two-stage rotary vane vacuum pump
a: Water-cooled vacuum pump
b: Vacuum pumping rate 4L/s
Device Functions
1. Measure the vacuum and vacuum degree of the device itself, electrical equipment, and storage tanks
2. Recover gas from electrical equipment
3. Dry and purify the recovered and refilled SF6 gas
4. Inflate SF6 electrical equipment
5. Compress and store SF6 gas in liquid state
Process Description:
1. SF6 gas recovery
When SF6 is extracted from a gas chamber, the gas automatically flows through the purification filter, is compressed and cooled by the SF6 compressor, and can be stored in the SF6 storage tank in gaseous form or as a liquid at high pressure.
2. Vacuuming SF6 switch
The vacuum pump removes air and moisture from the switch, and the outlet of the vacuum pump leads to the atmosphere.
3. Gas filling
Purified and dried SF6 is refilled from the storage tank into the evacuated gas chamber until the pressure in the chamber reaches the set working pressure. The above work is carried out in two steps:
Use the pressure of the SF6 storage tank to make the gas flow to the SF6 switch until the preset filling pressure is reached.
2. When the pressure of the SF6 storage tank and the SF6 switch are balanced, use the compressor to pressurize and fill until the preset filling pressure is reached.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
