High pressure multiple stage centrifugal compressor - has impeller mounted on common shaft accommodated in single casing

摘要

The multiple-stage centrifugal compressor without the horizontal joint comprises a casing into a package and forming a stator accommodated in the casing stage impellersa shaft mounting the stage impellers and constituting a rotor, and labyrinth seal holders, the diaphragms having cylindrical holes for the labyrinth seal holders. The cylindrical holes in the diaphragms have different diameters along the shaft axis, the diameters increasing in steps towards the end of the diaphragm package so that the labyrinth seal holders are adapted to be inserted and/or removed from one end of the diaphragm package.