GAS TURBINE Russian patent published in 2019 - IPC F01D9/02 F01D11/00 

FIELD: sealing elements.

SUBSTANCE: gas turbine includes sealing element for sealing of gap between transition part and end wall of nozzles in nozzle grid of the first stage of turbine, and end wall of nozzles has sealing groove. Sealing element includes a hook-shaped section, which slides in radial direction relative to the flange part of the transition part, and a sealing plate section inserted into the groove. Configuration of groove and section is such that they include area of surface contact, in which surface of groove and sealing plate section are in surface contact with each other, area of absence of contact, located on side, which is closer to the transition part than the surface contact area, and the hole provided on the sealing plate section and facing the surface in the groove across the gap in the area of contact absence.

EFFECT: invention provides effective cooling with simultaneous sealing of the gap between the transition part of the combustion chamber and the turbine first stage nozzle grid.

11 cl, 10 dwg