JYV-B SF6 Gas Vacuum Pumping and Filling Device
Darui Electric recommends:
Main configuration of JYV-B SF6 gas vacuum pumping and filling device:
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
JYV-B SF6 gas vacuum pumping and filling device device functions
1. Measure the vacuum degree of the device itself, electrical equipment, storage tanks, and vacuum pumping
2. Recover gas from electrical equipment
3. Dry and purify the recovered and refilled SF6 gas
4. Fill SF6 electrical equipment with gas
5. Compress and liquefy SF6 gas in electrical equipment for storage
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 in liquid form at a certain high pressure.
2. Vacuum pumping of SF6 switch
The air and moisture in the switch can be removed by the vacuum pump, and the outlet of the vacuum pump is connected to the atmosphere.
3. Gas filling
The purified and dried SF6 is filled back 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 is balanced with the pressure of the SF6 switch, use the compressor to pressurize and fill until the preset filling pressure is reached.
Technical conditions
1. Type: mobile, air-cooled
2. Working principle
1) Use the compressor to condense and liquefy SF6 gas at high pressure.
2) Heat exchanger assists gas recovery and refilling
3) Gas is filled through a buffer during filling
3. Main performance and technical parameters
1) Ultimate vacuum of the device ≤133Pa (special requirements can be ≤5Pa)
2) Vacuum pumping rate of the device 55m³/h
3) Initial filling pressure of the device <133Pa (user-defined as required)
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
