Centrifugal compressor | Kamsan Air Compressor Company of Iran

Centrifugal compressor | Kamsan Iran Compressed Air Company single-stage centrifugal compressor Among the features of the centrifugal compressor is its radial thrust flow. Air enters the center of the impeller using radial vanes and is thrown out towards the periphery of the impeller by centrifugal forces. Before the air is driven to the center of the next rotating impeller, it passes through a diffuser and a volute chamber, where the kinetic energy is converted into pressure. Centrifugal compressor The pressure ratio at each stage is determined by the final compressor pressure.Centrifugal compressors also increase the air velocity significantly after each rotating impeller. The air temperature at the inlet of each stage plays an important role in the power requirements of the compressor, and that is why cooling is required between stages. Centrifugal compressors with more than 6 stages and pressures up to 25 bar are not uncommon. The rotor can have an open or closed design. Open design is more common in air applications. The impeller is usually made of stainless steel or aluminum alloy. The speed of this compressor is very high compared to other compressors, about 15,000 to 100,000 rpm is quite common. Centrifugal compressor, this means that instead of ball bearings, journal bearings or sliding bearings are used in this Compressors are used. Ball bearings are used in single-stage compressors with low pressure ratio. Multi-stage compressors often have two impellers mounted on either end of the rotating shaft that counteract the axial loads produced by the pressure difference. The lowest volume flow in a centrifugal compressor is mainly determined by the flow in the last stage. A practical limit value of 160 l/s in the outlet duct of a two-piece horizontal fitting is often the rule of thumb. Every centrifugal compressor must be properly sealed to limit the amount of leakage along the axis of the rotor that passes through the compressor casing. Centrifugal compressor Various seals are used and the most advanced ones can be found in high-speed compressors that supply high pressures. The most common four types of seals include labyrinth seals, ring seals (usually graphite seals that work dry, but liquid seals are also used), mechanical seals (MECHANICAL SEAL) and hydrostatic seals.