2026-04-10Views：
The water-lubricated air compressor produced by Shanghai Granklin Group can be produced from 5.5 kW to 250 kW models. In the water-lubricated air compressor products, we have a number of patents, fully localized air compressor core components to reduce the cost of gas companies to purchase air compressors.
Granklin Group's production of water-lubricated permanent magnet screw air compressors is now more popular, and power frequency drives are also used by many people. What is the specific difference?
1. water lubricated air compressor with stable air pressure
because the variable frequency screw air compressor uses the stepless speed regulation characteristics of the frequency converter, it can start smoothly through the controller or the PID regulator inside the frequency converter. On occasions with large fluctuations in gas consumption, it can quickly adjust the response. Compared with the upper and lower limit switch control of power frequency operation, the pressure stability is improved exponentially.
2. water lubrication air compressor frequency conversion start without impact
since the inverter itself contains the function of soft starter, the starting current is less than 1.2 times of the rated current, and the power frequency starting is generally more than 6 times of the rated current, and the starting impact is very small. This impact is not only on the power grid, but also on the entire mechanical system.
Variable Flow Control of 3. Water Lubricated Air Compressor
the power frequency driven air compressor can only work in one exhaust volume, and the variable frequency air compressor can work in a relatively wide range of exhaust volume. The frequency converter is based on the actual gas consumption to adjust the motor speed in real time to control the displacement. When the gas consumption is low, the air compressor can also be automatically dormant, thus greatly reducing the loss of energy. The optimized control strategy can further improve the energy saving effect.
Better voltage adaptability of 4. AC power supply
due to the over-modulation technology adopted by the inverter, it can still output enough torque to drive the motor when the AC power supply voltage is slightly lower; when the voltage is slightly higher, it will not cause the voltage output to the motor to be on the high side. For self-generating occasions, variable frequency drive can show its advantages. According to the characteristics of the motor VF (the variable frequency air compressor works below the rated voltage in the energy-saving state), the effect is obvious for the field with low grid voltage.
low 5. noise
most of the working conditions of the frequency conversion system are lower than the rated speed, and the mechanical noise and wear of the main engine are reduced, which prolongs the maintenance and service life. If the fan is also driven by frequency conversion, the noise of the air compressor can be reduced.
Need to purchase water-lubricated air compressor, oil-free screw air compressor gas enterprises may wish to contact us, granklin group to provide you with production gas solutions.
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