The SF6 gas recovery and filling device is an integrated recovery device, consisting of a vacuum pumping system, compression system, purification system, storage system, and condensation system. The SF6 gas recovery, purification, and filling device is used by manufacturers of SF6 gas insulated electrical equipment, as well as by operation, research, and other departments, to evacuate various electrical equipment, fill them with SF6 gas, recover SF6 gas from used or tested electrical appliances, and simultaneously purify and compress it for storage in storage tanks. The recovery device is suitable for SF6 electrical appliances of various voltage levels and GIS combined electrical appliances.
Referring to the power industry standard DL/T 662-1999 "Technical Conditions for Sulfur Hexafluoride Gas Recovery Devices" and the former Ministry of Machinery and Electronics JB/DQ2588-90 "Sulfur Hexafluoride Filling and Recovery Device" standard, and also referencing the advantages of products from the world-renowned brand German DILO, this SF6 gas recovery and filling device has been developed to be more suitable for China's SF6 high-voltage switchgear industry. The device consists of a recovery system, filling system, vacuum pumping system, drying system, purification system, and storage system.
Main Functions
● Measure the vacuum and vacuum degree of the device itself, electrical equipment, and storage tanks
● Recover gas from electrical equipment
● Dry and purify the recovered and refilled SF6 gas
● Fill SF6 gas into SF6 electrical appliances
● Compress and store SF6 gas in liquid form in electrical appliances
● Adopts the design principle of freezing and liquefaction, reducing the working pressure of the system and greatly improving the recovery efficiency.
● The refrigeration compressor can be optionally equipped with an original French imported fully hermetic refrigeration compressor. It can also be upgraded for free to a semi-hermetic refrigeration compressor produced by a wholly American-owned enterprise, Emerson-Copeland (performance far exceeds any original imported fully hermetic compressor with the same cooling capacity).
● The SF6 compressor is a semi-hermetic compressor produced by a wholly American-owned enterprise (Emerson-Copeland brand), applied to halogen gases such as SF6, with fluorine resistance characteristics to ensure no leakage.
● The vacuum pump can be optionally equipped with a Japanese Ulvac two-stage rotary vane vacuum pump or an original German Busch, wholly German-owned Leybold, etc.
● Dual-container system, SF6 can be liquefied and filled into cylinders, with a filling capacity of no less than 50kg. The single-container recovery device has a cylinder filling capacity of no less than 30kg.
● The dual-container system features a unique SF6 vaporization method, using high-temperature, high-pressure SF6 gas to forcibly fill low-temperature, low-pressure SF6 liquid into cylinders, with short filling time and large filling capacity.
● A column-type liquid level gauge can be used, providing intuitive and accurate SF6 liquid level indication. The liquid level has a backlight indicator for clear visibility.
● The liquid storage container is built-in with a high-power SF6 vaporization electric heater. During use, automatic temperature control is performed to fully vaporize SF6 for external filling.
● Excellent imported (American) oil mist filtration system ensures oil content meets standards. Compressor lubricating oil is guaranteed not to need replenishment within one year, and the oil level is ensured not to decrease.
● The molecular sieve drying system has reliable performance. When regenerating the molecular sieve, there is no need for disassembly, removal, or replacement, and it is easy to use. Simply perform a self-regeneration operation on the molecular sieve dryer, and the drying performance can be restored to its original state.
● All ball valves adopt the American Swagelok working principle, with sealing elements having automatic compensation performance. They are practically applied in vacuum and pressure conditions, ensuring no leakage in both vacuum and pressure, and are special ball valves for both vacuum and pressure use. (Original American Swagelok ball valves can also be selected).
● Customized phase sequence protection device, with a withstand voltage of up to 500V, greatly improving reliability.
● Three-phase five-wire power supply, safer and more reliable.
● The flow chart can be optionally drawn on the panel for convenient and intuitive operation. All ball valves are used, with clear open and closed states.
● Adopts air-cooled, mobile type, can be used in the absence of a water source.
● The vacuum gauge is a digital display Pirani vacuum gauge.
● High-quality casters for easy movement without damaging the floor.
