SF6 Gas Recovery & Refilling Device

SF6 Gas Recovery & Refilling Device is a specialized equipment used for safe and efficient collection, purification, storage, and reuse of sulfur hexafluoride gas used in electrical equipment (mainly high-voltage switchgear such as GIS, circuit breakers, transformers, etc.).

SF6 Gas Recovery: It recovers SF6 gas from electrical equipment, with an initial recovery pressure of ≤0.8MPa and a final recovery pressure of ≤50kPa. For 1m³ of SF6 gas at 0.8MPa, recovery to 50kPa takes less than 2.5 hours.

Gas Purification and Filtration: The built-in filter and adsorption system removes impurities, water, decomposition products, and oil from the recovered SF6 gas. After purification, the water content is reduced to less than 60PPM (weight ratio) and oil content to less than 10PPM (weight ratio), ensuring the gas meets reuse standards.

Vacuum Extraction: The device can evacuate electrical equipment, with a limiting vacuum of ≤10Pa. It can vacuum 1m³ of SF6 gas from 0.1MPa to 133Pa in less than 1.0 hour.

Gas Recharging: It recharges purified SF6 gas back into electrical equipment. For 1m³ of gas at 133Pa, charging to 0.8MPa takes less than 0.8 hours, with an inflation rate of ≥5m³/h.

Liquefaction and Storage: The recovered SF6 gas is stored in liquid form in a 50L storage tank with a nominal liquid storage capacity of 50kg. The maximum storage pressure is 3.8MPa.

Dry Filtration System: The system uses American HASON technology with three-stage filtration to remove water, oil, particulate impurities, and dust. The built-in drying and heating system allows the desiccant to be regenerated after saturation, eliminating the need for replacement.

High Recovery Efficiency: The device recovers SF6 gas quickly and efficiently, with a recovery time of less than 2.5 hours for 1m³ of gas, minimizing downtime during maintenance.

Excellent Purification Quality: The three-stage filtration system (American HASON technology) ensures that recovered gas meets high purity standards (SF6 purity ≥99.9%), with moisture ≤60PPM and oil content ≤10PPM, allowing for safe reuse.

Integrated and Portable Design: The compact, integrated design with high-quality casters makes it easy to move and position in the field. The machine is air-cooled and does not require an external water source.

Reliable and Durable: Built-in phase sequence protection prevents damage from incorrect power connections. The system operates reliably even at -20°C, and the continuous trouble-free operation time is ≥1000 hours, with a cumulative trouble-free running time of ≥5000 hours.

Low Noise and Leakage: The noise level is ≤75dB(A), and the annual leakage rate is ≤1% of nominal storage, ensuring a safe and quiet working environment.

Maintenance-Free Filtration: The built-in drying and heating system regenerates the desiccant automatically, eliminating the need for frequent replacement and reducing maintenance costs.

Power Utilities and Substations: Used for the recovery, purification, and recharging of SF6 gas during maintenance, repair, or decommissioning of SF6-insulated equipment such as circuit breakers, GIS (Gas Insulated Switchgear), and transformers.

SF6 Equipment Manufacturing: Employed by manufacturers for filling new equipment with SF6 gas and for recovering gas during testing and quality control.

Maintenance and Service Companies: Used by service providers for on-site SF6 gas handling, ensuring that gas is properly recovered and purified for reuse, reducing environmental release and operational costs.

Industrial and Research Facilities: Used wherever SF6 gas is utilized, including research laboratories and industrial processes that require high-purity SF6 gas handling.

 

 

 

1. The SF6 gas recovery device and surrounding environment should be kept clean regularly.
2. The SF6 gas recovery device consists of various machinery and instruments. During transportation, collision, impact, and tilting should be avoided to ensure the reliable use of the device.
3. The SF6 gas recovery device has undergone a sealing test before leaving the factory. Due to various factors, please conduct regular sealing checks after running for a certain period of time.
4. SF6 gas recovery device vacuum pump
Check the oil level every time the machine is turned on, and the oil level should be within 2/3 of the oil gauge.
Regular maintenance of vacuum pump; The exhaust valve can be repaired after 500 hours of first use. Use 2000 hours for pump maintenance in the future. The vacuum pump needs to be replaced with oil in a timely and frequent manner. The longer the service life of a vacuum pump, the higher the maximum vacuum it can reach.
If there is abnormal exhaust sound and oil level fluctuation in the vacuum pump, the exhaust valve plate should be checked in a timely manner for looseness, aging, or damage, the sealing of the valve seat gasket should be intact, and the debris, dirty oil, and sediment in the oil tank should be removed to avoid additional pressure caused by a large amount of oil entering, which may cause damage to the rotor, rotor, and pump body.
5. SF6 gas recovery device SF6 compressor
Before starting up and during operation, the oil level should be checked. During operation, the height on the right side should be at the upper end of 1/2 of the oil level gauge and should not be lower than the "low line" of the oil level gauge. If the oil level drops, it should be refueled appropriately.
The compressor has been working for 6000 hours and requires major repairs.
6. SF6 gas recovery unit refrigeration unit
The maintenance of the compressor is the same as above
Regularly check the pressure gauge to ensure that the high and low pressures are within the specified range.
Pay attention to whether there is any leakage or oil seepage at each connecting part. The leaking part is often the leaking part. If the above phenomenon occurs, please stop the machine in time for inspection and treatment.

1. What is the purpose of an SF6 gas recovery device?
The primary purpose is to safely recover SF6 gas from electrical equipment during maintenance or decommissioning, purify it to remove impurities and decomposition products, and store it for reuse. This prevents the release of SF6 (a potent greenhouse gas) into the atmosphere and reduces the cost of purchasing new gas.

2. What is the recovery capacity and time?
The SF6 gas recovery device manufacturer can recover 1m³ of SF6 gas at an initial pressure of 0.8MPa down to a final pressure of 50kPa in less than 2.5 hours. The final recovery pressure is ≤50kPa.

3. How does the purification system work?
The SF6 gas recovery device factory uses a three-stage filtration system with American HASON technology. The built-in drying and heating system allows the desiccant to be regenerated after saturation, eliminating the need for replacement. This ensures continuous, maintenance-free operation.

4. What are the power and environmental requirements?
The SF6 gas recovery device operates on AC three-phase five-wire system, 50Hz, 400V±10% power supply. It works in ambient temperatures from -10°C to +40°C and requires no external water source (air-cooled).

5. Is the device portable and easy to use?
Yes, the SF6 gas recovery device is designed for portability with high-quality casters and a compact integrated design. It weighs approximately 545kg and has dimensions of 1450×810×1200mm. The machine is air-cooled and can be easily moved on-site.

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