SF6 Gas Recovery, Purification and Inflation Device
This device is an integrated recovery unit, consisting of a vacuum system, compression system, purification system, storage system, and condensation system. The Darui SF6 gas recovery, purification and inflation device is used by manufacturers of SF6 gas insulated electrical equipment, as well as by departments involved in operation, research, and testing. It is used to evacuate various electrical equipment, fill them with SF6 gas, recover SF6 gas from equipment in use or under test, and simultaneously purify and compress the gas for storage in storage tanks. The recovery device is suitable for SF6 electrical equipment of various voltage levels, as well as GIS combined electrical equipment.
Our company, referring to the power industry standard DL/T 662-1999 "Technical Conditions for SF6 Gas Recovery Devices" and the former Ministry of Machinery and Electronics Industry standard JB/DQ2588-90 "SF6 Gas Filling and Recovery Devices", and also referencing the advantages of the world-renowned German brand DILO's products, has independently developed a more cost-effective SF6 gas recovery and inflation device, which is more suitable for China's SF6 high-voltage switchgear industry. The device consists of a recovery system, inflation system, vacuum system, drying system, purification system, and storage system, with the following main functions:
Evacuation and vacuum measurement of the device itself, as well as electrical equipment and storage tanks
Recovery of gas from electrical equipment
Drying and purification of recovered and refilled SF6 gas
Filling SF6 gas into SF6 electrical equipment
Compression and liquid storage of SF6 gas from electrical equipment
Darui SF6 gas recovery, purification and inflation device product features:
Adopting advanced principles and technologies from foreign companies, with advanced design, complete functions, reasonable structure, and simple and clear operation.
The compression system introduces a semi-hermetic compressor with foreign compression technology, which has stable performance and a greatly extended service life compared to the past.
The vacuum system uses a two-stage rotary vane vacuum pump with fast vacuum rate, and the system is equipped with an oil return prevention device.
The purification system adopts the filter principle of the American Neil Company. The filter uses a two-stage built-in electric heating and built-in high-efficiency adsorbent, making the purification effect more significant (no need for frequent replacement of the adsorbent).
The electrical system of the device has automatic confirmation and adjustment of three-phase power supply.
The control system of the device uses new technology SF6 special instruments and valves, which are more reliable than similar product instrument ball valves.
The storage system is configured with a liquid storage tank according to user requirements.
The equipment is air-cooled and mobile, and can be used without an external water source.
Working principle:
Using a compressor for high-pressure condensation and liquefaction of SF6 gas.
Heat exchanger assists in gas recovery and refilling
During inflation, gas is filled through buffering - gas charging
