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 Industry standard JB/DQ2588-90 "Sulfur Hexafluoride Filling and Recovery Devices", and also referencing the advantages of products from the world-renowned brand DILO of Germany, this developed SF6 gas recovery and filling device is more suitable for China's SF6 high-voltage switchgear industry.
Main Functions
● Measure the vacuum degree of the device itself, electrical equipment, and storage tanks, and perform vacuum pumping.
● 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 from electrical appliances in liquid form.
Device Features
● Adopts the design principle of freezing and liquefaction, which reduces the working pressure of the system and greatly improves the recovery efficiency.
● The refrigeration compressor can be optionally equipped with an original fully hermetic refrigeration compressor imported from France. It can also be upgraded for free to a semi-hermetic refrigeration compressor produced by a wholly US-owned enterprise, Emerson-Copeland (performance far exceeds any original imported fully hermetic compressor of the same cooling capacity).
● The SF6 compressor is a semi-hermetic compressor produced by a wholly US-owned enterprise (Emerson-Copeland brand), applied to halogen gases such as SF6, with fluorine resistance characteristics, ensuring no leakage.
● The vacuum pump can be optionally equipped with a Japanese Ulvac two-stage rotary vane vacuum pump or a German original Busch, German wholly-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 has an innovative SF6 vaporization method, using higher temperature and high-pressure SF6 gas to forcibly fill low-temperature and low-pressure SF6 liquid into cylinders, with short filling time and large filling capacity.
● A column-type level gauge can be used, providing intuitive and accurate SF6 liquid level indication. The liquid level has backlight indication, which is clear and easy to read.
● The liquid storage container is equipped with a built-in high-power SF6 vaporization electric heater. During use, automatic temperature control is performed to fully vaporize SF6 for external gas filling.
● Excellent imported (US) oil mist filtration system ensures oil content meets standards. Compressor lubricating oil ensures no need for addition within one year, and the oil level is guaranteed not to decrease.
● The molecular sieve drying system is reliable. The molecular sieve can be regenerated without disassembly, dismounting, or replacement, and is easy to use. Only a self-regeneration operation of the molecular sieve dryer is needed, and the drying performance can be restored to its original state.
● All ball valves adopt the working principle of American Swagelok, with sealing elements having automatic compensation performance. They are practically applied under vacuum and pressure conditions, ensuring no leakage under 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.
● Air-cooled and mobile, can be used without a water source.
● The vacuum gauge is a digital display Pirani vacuum gauge.
● High-quality casters for easy movement without damaging the floor.
