I. Summary of oil-free double-snail air presses
The luw vsd oil-jet-free double-heavy air compressor, originally imported by liutec/liutek, was produced from the atlas copco group compressor technical headquarters at the airpower plant in antwerp, belgium, and brought together the group's advanced experience and technology。
Luw vsd has the following characteristics:
1. Efficiency: the overall efficiency is as high as 15-20 per cent compared to the conventional oil-free spiral compressor; the full range of rotor speed-drive technology eliminates the possibility of offloading and emptying
2 reliability: simple and reliable water lubrication single-stage compression, with a significant reduction in the number of components resulting in a high degree of reliability, compared with the traditional oil-free spiral double-stage dry compression, with only one quarter of the volume sealed
3 durable: traditional non-oil-dry compression, rotor wear and coating loss have been a problem, while the revolutionary zo wear of luw vsd water lubrication technology has resulted in a significant increase in rotor life
4, 0 risk: luw vsd does not need to cool gear boxes and rotors, compared to the traditional oil-free screws, and is truly completely oil-free in the cylinders, making them zero risk of oil contamination
High pressure: the maximum working pressure can be up to 13 bar(g) as a result of the excellent cooling technology of water-jet double-snails。
Ii. Rationale for oil-free double-snail air presses
Whether wind or water cooler units, the luw vsd series uses oil-free screw compression techniques, and the water involved in the compression process uses the ro-specified reverse osmosis system to purify the water, to ensure cleanliness and the lifetime of rotors and bearings。
Water is mixed with air during compression, where water is cooling, sealing, lubricating, significantly increasing compression efficiency, and water gas mixtures are separated by the gravity and centrifugal effect of the water drum。
The water is cooled and returned to the rotor interior through a water filter; the water pump (37-55kw) in front of the cooler establishes a water pressure for the water lubricating fluid power bearings, which only operates at a short time of machine start-up and shutdown。
The entire cycle process is reliable and efficient, and is not as efficient as the oil-scaling process: the process of near-temperature compression is a guarantee of efficiency; the device and the constant temperature valves do not need to be similar to the oil-scaling process, and do not need to consider issues such as rotor temperatures and low bubble water to increase reliability further。
Iii. Design and characteristics of the oil-free double-snail air press
1. Efficient rotors
High-quality aluminum copper shell: rotors are completely non-corrosive
Polymer ceramic rotors: water lubricating efficient materials, with water cooling, lubricating and sealing; the closest to temperature compression processes; no heat expansion and no wear; optimized lines, low vibrations and low noise; ensuring 100 per cent oil-free
Water lubricating fluid power bearings: 100 per cent oil-free without grease lubrication
Stainless steel rotor axis: completely non-corrosive。
2. Electrical
Siemens full closed wind-cooled electric power, power efficiency level ie3, protection level ip55, insulation level f, continuously and efficiently operating in harsh conditions。
3. Frequency converters
Siemens micromaster vector, combined with the efficiency of the electric power, contains rf filters for harmonious wave-keeping, meets the criteria for electromagnetic compatibility, sets the power source stabilizer and withstands grid fluctuations of 10 per cent. Zero offloading and emptying of unoiled compressed air is eliminated。
4. Controls
Elektronikon colour screen controllers, with excellent visual and human interfaces; real-time online monitoring through simple internet connections; and multiple group controls with the option ecoos6。
5. Water drums
Austral stainless steel, completely non-corrosive
(a) efficient separation of gas water through the separation of cyclones with gravity and centrifugal power
At the same time, three liquid-level sensors are integrated, always ensuring that the water-jet rotors operate at normal water levels without excessive or water-deficit operation。
Pumps
Only 37-55kw, which is only briefly activated at machine start-up and shutdown to create a lubrication pressure for water lubricating fluid power bearings
7. Ro's anti-infiltration water system
Integrated sediment filtration and activated carbon filtration, the use of anti-permeable membranes to obtain pure water, significantly reducing user risk; automatic recharge of the system to the water level, fully automatic updating of the compression system every 10 days to improve management efficiency; and smaller water consumption, luw vsd 20l per 10 days, aq37-55 vsd 40l per 10 days。
8. Internal refrigerated dryers (optional)
The luw vsd complete series of machines is available for the installation of refrigerated dryers within the full performance group. The built-in dryer integrates the installed compressed air system with an export compressed air pressure spot of 3°c; it saves the installation and connection of external pipelines and lowers space costs, while the specific built-in dryer energy efficiency saves an average of 50% of refrigeration dryer energy consumption。
Iv. Certification of oilless double-snail air presses
Aq is the best guarantee of air quality for users through the tÜviso 8573-12010 version of class 0 without oil。
The atlas copco group microbiology vito report shows that microbes are still not at risk of breeding under conditions that are worse than normal operating conditions, and that the quality of compressed air is also assured。
