Compressor with centripetal and centrifugal stages - first stage has adjustable inlet guide vanes and outlet vanes downstream of rotor

摘要

In the two stage compressor, the first stage is a centripetal stage, and the second one is a centrifugal stage of the disc type. The two stages are mounted upon a common shaft and together form a flow path where the fluid to be compressed flows radially inwards in the first stage and radially outwards in the second stage. The first stage is provided with adjustable inlet guide vanes as well as with outlet vanes immediately downstream of the rotor vanes, the inlet, rotor and outlet vanes, respectively, being individually formed with the same profile over the full length of the respective type of vane.