GAS TURBINE WHEEL Russian patent published in 2008 - IPC F01D5/30 

FIELD: engines and pumps.

SUBSTANCE: gas turbine wheel incorporates a plate with cogged slots, working cooled blades arranged in the plate slots, the cogged tails of the latter are furnished at the lower cog level, with a bracket-shaped ledge accommodating an arrest plate arranged in the plate annular groove. The said arrest plate is furnished, on its one side edge, with a lock and alternating slots and tapered stamped ledges making locking elements. The said tapered stamped ledge is received in the blade tail bracket-shaped ledge slot resting, by its taper base central part, against the slot wall on the side opposite to the blade tail and, with the taper base side parts, against the plate surface located on both sides of the bracket-shaped ledge. The said stamped ledge base camber exceeds the width of the slot in the bracket-shaped ledge of the working blade cogged tail. The plate side surface, opposite to the gas flow,between the cogged slots and at the plate cogged central space, is furnished with ledges. A lock is arranged between the said ledges and the working blade cogged tail bracket-shaped ledges.

EFFECT: higher working wheel safety, lower labour input in machining the working wheel tail slots and lower weight of the arrester plate.

4 dwg