Secondary compression air compressor
In essence, the secondary compression combines the primary compression rotor and the secondary compression rotor in a single casing and is directly driven by the helical gears. The natural air enters the first stage of compression through the air filter, and mixes with a small amount of lubricating oil in the compression chamber while compressing the mixed gas to the interstage pressure. The compressed gas enters the cooling channel and comes into contact with a large amount of oil mist, which greatly reduces the temperature. The cooled compressed gas enters the second stage rotor, undergoes secondary compression, and is compressed to the final exhaust pressure. Finally, the compressor is discharged through the exhaust flange to complete the entire compression process.
According to the engineering thermodynamics theory, the air compressor compresses the most moderately during the compression process. (The lower the density of the gas at higher temperatures, the more work is required for compression). Not only that, isothermal compression can not only reduce the work of consumption, but also reduce the temperature of the compressed gas, making the use of air compressor materials wider and more economical, making the operation of the air compressor more reliable. However, isothermal compression requires gas heat to be exchanged with the outside world at any time. The gas temperature is equal to the outside world and is impossible to achieve in actual work. And by staged compression plus intermediate cooling is an effective way to reduce the exhaust temperature
