TURBINE BLADES AND GAS-TURBINE UNIT WITH SUCH TURBINE BLADES Russian patent published in 2019 - IPC F01D5/18 

FIELD: machine building.

SUBSTANCE: turbine blade comprises first and second wall surfaces, connecting channel and ledge. First wall surface faces the cooling channel, through which cooling air flows. Second wall surface faces the working fluid channel, through which the working fluid flows. Connecting channel provides communication between cooling channel and working fluid channel. Ledge is provided on the downstream side of the direction of flow of cooling air in the hole of the connecting channel. Hole is formed in the first wall surface. Ledge protrudes from first wall surface to cooling channel.

EFFECT: invention is aimed at improving cooling efficiency.

5 cl, 11 dwg