TURBOMACHINE STATOR Russian patent published in 2014 - IPC F01D21/04 F01D25/24 

FIELD: machine building.

SUBSTANCE: turbomachine stator comprises flange joint of housings consisting of radial circular ribs and shells jointed thereto. Flange joint butt on flow section side accommodates extra split ring consisting of sectors. Said split ring is locked by circular radial rib in axial direction gas flow upstream and downstream radial ribs of the stator housings flange joint. Said split ring is locked radially by circular axial rib directed against gas flow and located in circular groove of front shell while, in circumferential direction, it is locked by axial ledges at conical wall relative to upstream nozzle blade. Ring conical wall end surface lock front nozzle blades in axial direction. Split ring rear circular ledge is arranged on inner side of downstream housing. Labyrinth seal elements are fitted on inner side of said ring, over working blade top shroud.

EFFECT: higher reliability.

1 dwg