ROTOR OF CENTRIFUGAL COMPRESSOR Russian patent published in 2001 - IPC

FIELD: mechanical engineering; high-speed centrifugal compressors. SUBSTANCE: rotor of centrifugal compressor has shaft with fitted-on impeller. Ring space made in impeller hub divides hub into inner and outer rings. Ring space is limited at one side by ring partition connecting inner and outer rings of hub, and at other side, by rotating guide vane assembly or fairing installed in direction of air flow before impeller. Ring clearance is made between inner ring of hub and shaft on section from side of partition. Seat surface of inner ring mated with shaft is displaced relative to partition towards fairing and is located at a distance of 0.1-0.15 of impeller outer diameter from outer surface of partition. EFFECT: improved reliability of operation of centrifugal compressor rotor owing to reduced radial deformation if impeller seat surface. 3 cl, 1 dwg