SF6 gas, as an insulating gas, is non-toxic, non flammable, and has good insulation properties. Its insulation strength is much higher than traditional insulating gases, and it has good arc extinguishing properties. Therefore, it is widely used in SF6 electrical appliances. Due to the high price of SF6 gas and the decomposition of toxic components under the action of electric arc, spark and corona discharge. Therefore, SF6 gas needs to be recovered when applying SF6 electrical equipment. This device is a specialized equipment for the recovery and filling of SF6 gas during the manufacturing and maintenance of SF6 electrical equipment.

(1) Advanced design, complete functions, reasonable structure, and automatic control.
(2) Compression system: SF6 sealed high-pressure compressor is used, with no leakage.
(3) The vacuum pumping system adopts a two-stage rotary vane vacuum pump and is equipped with an automatic oil return prevention device in the system.
(4) The purification system adopts the principle filter of the American company Parnell, which uses electric heating and high-efficiency adsorbent inside. The purification effect is more significant, and it can efficiently remove acidic substances from decomposition products (without frequent replacement of adsorbent).
(5) Automatic confirmation of three-phase power supply and automatic protection against phase failure in the electrical system of the device.
(6) The device control system adopts the latest technology SF6 special valve (German funded)
(7) The storage system is equipped with a 200KG liquid storage tank according to user requirements.
(8) The device is mobile.

(1) Type: Freeze liquefied, air-cooled, mobile
(2) Working principle
a、 Use a high-pressure compressor to condense liquefied SF6 gas. Gas liquid purification.
b、 The dryer assists in gas recovery and recharge.
c、 Inflate by buffering and vaporizing (can be heated).
(3) Working environment temperature: -10 ℃ (-30 optional)+40 ℃

1. The maximum vacuum degree of the device is less than 10Pa
2. Vacuum pumping rate of the device is 45-110m3/h (maximum vacuum degree of the vacuum pump is less than 0.06Pa)
3. The initial inflation pressure of the device is less than 133 Pa (customized by the user)
4. The final inflation pressure of the device is ≤ 0.8M Pa
5. Device inflation rate>8-20m3/h
6. Device recovery initial pressure ≤ 0.8M Pa
7. The final pressure for device recovery is less than 2000Pa
8. Device recovery compressor rate 15-22m3/h
9. The annual leakage rate of the device is less than 1%
10. The maximum design pressure of the storage tank for the device is 4.5M Pa
11. Storage tank capacity 200-400KG (including refrigeration condensation/inflation heating/liquid level display inside the tank)
12. External dimensions:
13. Storage method: liquid
14. Noise ≤ 75dB sound pressure level
15. Drying filter regeneration method: vacuum regeneration, heating activation treatment
16. Power supply: 50HZ AC three-phase 380V ± 10%
17. The total power of the device is less than 12KW
18. Device weight: 1100-1500 kilograms
19. Purification: Micro water 10PPm, oil 5PPm, dust ≤ 1 micron
20. The recovered gas complies with IEC60376 and IEC60480 standards. (The gas source needs to be good)
The purified SF6 gas should meet the IEC standard. Refer to IEC60376 and IEC60480

Carbon tetrafluoride (CF4) ≤ 0.05%
Air (N2+O2) ≤ 0.05%
Humidity (H2O) ≤ 8 Μ g/g
Acidity (calculated as HF) ≤ 0.2 Μ g/g
Hydrolyzable fluoride (calculated as HF) ≤ 1.0 Μ g/g
Mineral oil ≤ 5 μ g/g
Purity (SF6) ≥ 99.6% (mass fraction)
Biological toxicity, non-toxic

The main functional components of the device include compressors, vacuum pumps, oil-free vacuum pumps, refrigeration condensation systems, drying and filtering regenerators, heaters, purifiers, filters, pipelines, valves, instrument controls, electrical controls, as well as structural components such as frame panels, wheels, and storage tanks.

1. SF6 Compressor: (EMERSON, USA) CA-0300-0400
a: Theoretical displacement: 15-22m3/h
b: Maximum exhaust pressure: 2.5Mpa
c: Minimum suction pressure: 53Kpa
d: Maximum suction pressure: 1Mpa
e: Power: 3KW
f: Power supply: 220-380V 50HZ
2. The vacuum pumping system adopts a two-stage rotary vane vacuum pump (Sino German joint venture)
a: The vacuum pump adopts air-cooled type and can operate for a long time
b: Vacuum pumping rate 45-110m3/h
c: Ultimate vacuum degree 0.06pa
d: Power 3KW
3. Refrigeration system: using American EMERSON or French MANEURCP host, 4600-6000 Kcal/h, R22, 2.32KW, 380V50HZ
4. Filtration/purification system: using imported EMERSON filter cartridges, etc
Includes oil and gas filtration/particle filtration/acidic substance, decomposition purification/micro water filtration/N2 filtration
5. SF6 Valve: Ball Valve SF6 Special/Safety Valve/Pressure Reducing System
6. Pressure gauge, vacuum gauge: German TECSIS technology 1413 thermocouple vacuum gauge
7. Device warranty for one year, lifetime maintenance

1. 1 device
2. 1 storage tank (built-in)
3. 1 vacuum gauge (installed on the main unit)
4. Two 10M and 5M high-pressure pipes
5. A set of accessories and vulnerable parts that come with the device