How does an Atlas Copco compressor work?
The basic principle of a screw compressor is as the male and female rotors are rotating in opposite direction they draw air in between them. As the air progresses along the rotors the air is compressed as the volume space between the rotors decreases, hence creating compressed air that is displace to the outlet.
How does a screw compressor valve work?
Screw compressor achieve its objective of raising the pressure of a gas by trapping a fixed volume of gas on the suction side and progressively decreasing that volume of gas which results raising its pressure at the discharge side.
What is screw element in compressor?
The screw element is the most important part of any screw-type compressor. It’s that part of the machine where the actual compression takes place. It is the heart of the rotary screw air compressor. Often, the compressor screw element is also called air-end.
What is true for screw compressors?
Working Principle of a Screw Compressor. The oil injected rotary screw compressor is a positive displacement type compressor. A given quantity of air or gas is trapped in a compression chamber and the space that it occupies is mechanically reduced, causing a corresponding rise in pressure prior to discharge.
What is a screw type air compressor?
A rotary screw air compressor is a type of air compressor which uses a rotary-type positive mechanism. Screw compressors can commonly be found where large volumes of high-pressure air are in need. When your application requires continuous air demand, a screw compressor is the way to go.
How does a screw compressor control capacity?
Mechanical discharge capacity control is realized through a slider valve, which adjusts compressor displacement by shifting the start of the compression process via axial movements of a slider valve. Controlled by solenoid valves, the slider enables smooth capacity regulation over an entire operating range.
How does the balance piston work on a screw compressor?
Balance piston: The higher the gas load force applied to the rotor, the greater the force that is applied to the thrust bearing. To help offset the axial load of the thrust bearing, a balance piston is installed on the rotor. The balance piston’s function is to extend the operational life of the thrust bearing.
How are screw compressors lubricated?
In an oil injected rotary screw compressor, oil is used for four main purposes. It is injected into the compression chamber to cool the machine, provide adequate lubrication of the moving parts, provide sealing and to aid with noise dissipation. This will remove the majority of the oil through velocity changes.