TURBINE BLADE AND METHOD OF THE TURBINE BLADES SYSTEM MANUFACTURING Russian patent published in 2018 - IPC F01D5/30 

FIELD: engine building.

SUBSTANCE: turbine blade comprises a working part, a diamond-shaped or a T-shaped shank disposed in the peripheral groove, and a covering plate between them. Covering plate has a front surface, a rear surface, a first contact surface and a second contact surface located parallel thereto. First contact surface is centered with the second contact surface of the adjacent turbine blade for the said surfaces adherence to each other. Blade leading edge is directed towards the covering plate front surface, and the blade trailing edge is towards the covering plate rear surface. Covering plate front surface has a partial bend, wherein the bend starts in the range of 0.3 to 0.7 of the covering plate front surface length. During the turbine blades system manufacturing, a plurality of turbine blades are disposed in the groove, and the covering plate is disposed between the blade shank and the working part. Covering plate has a facing the groove front surface, wherein in the acute angle region the front surface has a bend between the front surface and the first surface, which is made in such a way that the forces arising during the operation from the turbine blades' shank to the groove do not lead to the front surface plastic deformation.

EFFECT: group of inventions allows to reduce the mechanical loads arising on the turbine rotor due to the rotor and blades uneven thermal expansion with the temperature change in the turbine.

7 cl, 8 dwg