The so-called multi-stage compression, that is, according to the required pressure, the cylinder of the compressor into a number of stages, step by step to increase the pressure. And after each stage of compression to set up an intermediate cooler, cooling each stage of compression after the high temperature of the gas. This reduces the discharge temperature of each stage.
With a single-stage compressor will be pressed to a very high pressure, compression ratio is bound to increase, the temperature of the compressed gas will also rise very high. The higher the gas pressure increase ratio, the higher the gas temperature rise. When the pressure ratio exceeds a certain value, the final temperature of the compressed gas will exceed the flash point of the general compressor lubricant (200~240℃), and the lubricant will be burned into carbon slag, causing lubrication difficulties.
Compressor is used to raise the gas pressure and transport gas machinery, belong to the original motive power energy into the gas pressure energy work machine. It has a wide range of types and uses, and is known as “general-purpose machinery”. At present, in addition to the piston compressor, other types of compressor models, such as centrifugal, twin-screw, rolling rotor type and scroll type are effectively developed and used to provide users with more possibilities in the choice of models. With the rapid development of the economy, China’s compressor design and manufacturing technology has also made great progress, in some aspects of the technical level has also reached the international advanced level.
Post time: Aug-24-2022