Click to learn more +
Contact Us/ CONTACT US
Service Hotline
Building 57, No. 128, Bridge Road, Kangqiao Town, Pudong New Area, Shanghai
Principle of two-stage compression air compressor
Classification: Principles of Engineering
Classification: Technical Data
Time：2017-09-27 08:39
At present, the screw air compressor on the market, there are mainly single-stage compression and two-stage compression. Single-stage compression is familiar to everyone and is widely used. In actual use, some air compressors with high power and high gas production demand often use two-stage compression. This paper briefly introduces the working principle and advantages of two-stage compression. Two-stage compression is to combine the first-stage compression rotor and the second-stage compression rotor in a casing, and directly drive through helical gears respectively. Natural air enters the first stage of compression through the air filter, mixes with a small amount of lubricating oil in the compression chamber, and compresses the mixed gas to interstage pressure. Compressed gas
Currently on the market.ScrewTypeAir compressorThere are two main types of single-stage compression and two-stage compression. Single-stage compression is familiar to everyone and is widely used. In actual use, some of the power and gas production demand is large.Air compressorTwo-stage compression is often used. This paper briefly introduces the working principle and advantages of two-stage compression.
Two-stage compression is to combine the first-stage compression rotor and the second-stage compression rotor in a casing, and directly drive through helical gears respectively. Natural air enters the first stage of compression through the air filter, mixes with a small amount of lubricating oil in the compression chamber, and compresses the mixed gas to interstage pressure. The compressed gas enters the cooling channel and comes into contact with a large amount of oil mist, thereby greatly reducing the temperature. The cooled compressed gas enters the second-stage rotor, enters the second-stage compression, and is compressed to the final exhaust pressure. Final discharge through exhaust flangeCompressorComplete the compression process.
Because the temperature is high, the density of the gas is low, the more work required for compression, so the air compressor in the compression process is the most work-saving. Not only that, isothermal compression can not only reduce the consumption of work, but also reduce the temperature of the compressed gas, so that the operation of the air compressor is more reliable. However, isothermal compression is impossible to achieve in practice, and the use of staged compression and intermediate cooling is an effective way to reduce the exhaust temperature.
Two pairs of rotors work at the same time, pumping speed, large gas production, this is a single stage compression irreplaceable advantage. And because of the two-stage compression, the compression of each stage is much smaller than that of a single stage, the rotor andBearingThe compression is small, coupled with the large diameter and low speed of the rotor, so the operation is more reliable.