QTHS Sf6 Gas Filling Equipment

YUNENG QTHS sf6 gas filling equipment could be used to recover, purify and fill the SF6 gas from the GIS or other insulated electrical equipment. The YUNENG QTHS sf6 gas filling equipment has the functions of vacuuming, filling, recovery, and storage. Customer satisfaction is our aim. We could customize the machine according to the customer’s requirements.

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What is Sf6 Filling Equipment?

  1. The QTHS sf6 gas filling device is equipped with an embedded 32-bit processor and multi-CPU system development, IT interface-related technology, automatic setting of temperature parameters, detector selection, detector operating parameters, and data auto-zero function, sensitivity and polarity digitization settings.
  2. The full Chinese menu operation interface can display multiple sets of parameters at the same time, and the operation is very simple and convenient.
  3. The computer anti-control function can operate all functions inside the instrument through the computer (through the USB interface).
  4. No external workstations are required, and an analog output interface is provided.
  5. The machine has a complete set of professional chromatographic technology solutions for the gas industry.
  6. The machine uses VICI Valco automatic ten-way switching valve to control the gas path.
  7. The machine application SF6 gas separation dedicated column separation column.
  8. The process uses a multi-channel precision zero dead body special valve to control chromatographic separation column flow.
  9. The core sensitive parts adopt the company’s high sensitivity thermal conductivity and hydrogen flame detector.
  10. The equipment uses a special fluorine-containing special gas sampling and purging scheme.
  11. The equipment has a complete set of professional digital and full Chinese anti-control gas chromatographs.

What is the sf6 gas filling procedure?

Correct operation process of SF6 gas vacuum and inflatable device

  • Recover SF6 gas

When the SF6 gas is extracted, the gas automatically flows through the purification filter in the unit. Then it is compressed and cooled by the SF6 compressor, and then the SF6 gas is stored in the storage tank. (Can be in gaseous or liquid form)

  • Vacuum

The air and moisture in the air chamber and the switch are removed by a vacuum pump.

  • Fill with SF6 gas

Fill the purified and dried SF6 gas from the storage tank into the air chamber that has been evacuated until the pressure in the air chamber reaches the set working pressure.

Functions of sf6 gas filling equipment

The Sf6 Filling Equipment consists of the SF6 compressor, vacuum pump, vacuum system with anti-oil return device, condensation system, liquid storage tank, purification system with built-in renewable dry filter, dust filter, ball valve, vacuum gauge and electrical control, pressure Detection and alarm devices, instrument panels, and other auxiliary facilities.

1. The machine can vacuum all kinds of SF6 electrical equipment.

2. Fill electrical equipment with SF6 gas.

3. Recover SF6 gas from the electrical appliances used, and carry out purification treatment at the same time.

4. Compress and store SF6 gas to the storage tank.

This Sf6 Filling Equipment is suitable for SF6 electrical appliances and GIS combined electrical appliances.


TypeHigh-pressure liquefaction, air cool, mobile
Working Environmental Temperature-10℃ ~ 40℃
RecoveryInitial pressure0.8
Final pressure (MPa)≤0.05
Time to recover 1m3 gas(h/m)≤0.5
FillingInitial pressure≤133
Final pressure (MPa)0.8
Time to recover 1m3 gas(h/m)≤0.5
Time for pumping vacuum from 0.1Mpa to 133Pa(h/m)≤1
Limit vacuum (Pa)≤10
Gas purity after recovery SF6 (50KGS)Water content(PPM/V)≤60
Oil content (PPM/W)≤5
Storing TankStorage methodLiquid gas
Pressure (MPa)≤5.0
Volume (L)300
Liquid volume(Kg)280
Liquefaction methodHigh-pressure liquefaction
Vaporization methodHeating with electricity
Dry filter regenerationVacuum heating re-activated 
Power380V 50Hz 3 Phase 4 Wire (based on your requirement)
Overall dimensionmm1600*1000*1900 (including the storing tank)
1600*1000*1200 (without the storing tank)
Total power (KW)≤8

The machine size, and weight will change slightly due to different configurations.

Detailed Images

QTHS Sf6 Gas Filling Device
QTHS Sf6 Gas Filling Device