MULTI-STAGE GAS TURBINE STATOR Russian patent published in 2009 - IPC F01D9/02 F01D25/24 

FIELD: engines and pumps.

SUBSTANCE: multi-stage gas turbine stator comprises an outer casing with radial ribs accommodating outer flanges of nozzle blades locked in the casing along its circumference by mortise joint, while axially they are locked by split ring sectors located downstream. The said sectors are locked axially relative to the casing by bayonet joints. Sectors with bayonet joints are locked along circumference by intermediate sectors of the same split ring. Intermediate sectors have no circular groove to receive bayonet joint and have their front parts located on the casing recesses. The number of sectors with bayonet joints is equal to that of the nozzle vane flanges.

EFFECT: higher reliability and reparability of stator.

3 dwg