COOLING PRINCIPLE FOR BLADES OR GUIDE BLADES OF TURBINES Russian patent published in 2018 - IPC F01D5/18 

FIELD: engine building.

SUBSTANCE: turbine assembly includes a hollow blade having at least a main cavity with at least a leak-cooled pipe, a flange and a cooling chamber. Pipe is insertable into the main cavity of the hollow blade and is used to cool at least the internal surface of the main cavity. Flange is located at the radial end of the hollow blade. Cooling chamber is used to cool, at least, the shelve and is placed on the opposite platform of at least one flange relative to the hollow blade. In this case, at least one cooling chamber is limited at the first radial end by means of at least one wall segment of the flange and on the opposite radial second end - by at least cover plate. Pipe for leakage cooling extends in the direction of the transverse dimension, at least, completely through the cooling chamber from the flange to the cover plate. Pipe for leakage cooling limits the sub-cavity of the main cavity. At least one wall segment of the at least one flange comprises at least one inlet opening for the entry of a cooling medium at least through one inlet opening from at least one cooling chamber of the at least one flange into the sub-cavity of the hollow blade.

EFFECT: invention is aimed at increasing the cooling of the blade flange.

13 cl, 9 dwg