Product introduction

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.).

Technical Parameters

Recovery	Initial recovery pressure ≤0.8MPa
	Final recovery pressure ≤50KPa
	Recovery time: For 1 m³ SF6 gas volume with initial pressure of 0.8MPa, recovery to the final pressure of 50KPa, the recovery time is less than 2.5 hours
Aeration	1 m³ SF6 gas volume with initial pressure of 133Pa is charged to 0.8mpa, and the charging time is less than 0.8 hours
Vacuum extraction	The limit vacuum degree of the device is less than or equal to 10 Pa, and the time required to vacuum the 1 m³ SF6 gas volume with an initial pressure of 0.1MPa to 133Pa is less than 1.0 hours
Storage	Storage container volume 0.05m³
	Nominal liquid storage capacity 50kg
	Maximum storage pressure 3.8MPa
Decontamination	For SF6 gas with water content below 1000PPM (volume ratio), after recovery and purification by the device, the water content is less than 60PPM (weight ratio), and the oil content is less than 10PPM (weight ratio).
Annual leakage rate	≤1% nominal storage
Noise	≤75dB(A) Sound pressure level
Operating ambient temperature	-10℃-40 ℃
Power source	AC three-phase five-wire system 50Hz 400V±10%
Power	≤5kW
Weight	About 545kg
Overall dimensions (L × W × H)	1450×810×1200mm³

Maintenance and upkeep methods

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.

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