COMPOSITE WORKING BLADE OF TURBOMACHINE Russian patent published in 2024 - IPC F01D5/14 

FIELD: machine building.

SUBSTANCE: invention relates to power engineering, in particular, to turbine construction, and can be used in axial turbomachines, that is steam and gas turbines. Composite working blade of an axial turbomachine, consisting of a metal shank, a radial metal rod firmly attached to the shank, a shroud, fixed on the peripheral end of the radial rod, shaped hollow shell, freely installed outside the radial rod, wherein inside the hollow shaped part there is a thrust bushing, the upper outer flange of which is conjugated with the upper end of the shaped part, and its lower inner flange is conjugated with the spacer sleeve, which rests against the head of the radial metal rod, wherein the flanges are coupled in such a way that when the blade is heated, the shaped hollow part is compressed and pressing its lower end to the shank, since the spacer bushing is made from material with a temperature coefficient of linear expansion greater than the temperature coefficients of linear expansion of materials of the profile part, the thrust bushing and the radial metal rod.

EFFECT: higher reliability.

1 cl, 3 dwg