Water lubricated oil-free variable frequency single screw compressor

Water lubricated oil-free variable frequency single screw compressor is an energy-saving inverter controlled motor and host operation. Compared with compressors controlled by power frequency, energy conservation is the most practical significance. Supplying electrical energy to the compressor based on air demand is the most economical way of operation. Save about 15-30% on electricity bills, and recover the invested funds in about six months to a year. The high-efficiency water lubricated oil-free variable frequency single screw compressor achieves stepless speed regulation according to the customer's gas consumption, maintaining optimal operating efficiency between output gas volume and system consumption. Realize energy-saving effects. Due to its strong automatic adjustment capability, it can quickly respond to changes in system pressure and maintain optimal operational efficiency. Compared with ordinary compressors, the advantages of variable frequency compressors are not only clear energy-saving benefits, but also the ability to provide stable exhaust pressure, improve motor power factor, effectively reduce starting power, and extend the service life of compressors.

The principle of the variable frequency energy-saving system for the water lubricated oil-free variable frequency single screw compressor is as follows: the deviation is obtained by comparing the pressure value of the pipeline network measured by the pressure transmitter with the set pressure value, and the frequency value of the variable frequency acting on the asynchronous motor is calculated by the PID regulator. The AC power with corresponding frequency and amplitude output by the frequency converter is used to obtain the corresponding speed on the motor. So the compressed air output corresponding to the air compressor is sent to the air storage tank, causing the pressure to change until the pipeline pressure is the same as the given pressure value, which has a significant energy-saving effect.

The water lubricated oil-free variable frequency single screw compressor also has the following advantages: it generally does not operate in high-speed areas, which extends the life of the motor and main engine bearings. Maintain stable pressure at the outlet of the gas storage tank during variable frequency operation, with pressure fluctuations not exceeding ± 0.2 bar. The frequency converter starts the compressor from 0Hz, and its starting acceleration time can be adjusted, thereby reducing the impact on the electrical and mechanical components of the compressor during startup, enhancing the reliability of the system, and extending the service life of the compressor. The motor runs slowly, effectively reducing the noise and vibration during the operation of the air compressor. The noise level has decreased by about 3 to 7 decibels compared to the original system. Variable frequency control can reduce current fluctuations during unit start-up, which can affect the electricity consumption of the power grid and other equipment. Variable frequency drives can effectively minimize the peak value of start-up current. It does not affect the electricity consumption of the power grid and other equipment, and the most important thing is low operating costs. Its energy cost has been reduced by approximately 44.3%, with significant benefits.