FIELD: mechanical engineering; steam turbines.
SUBSTANCE: according to invention, rotor blade is modified to contribute to change of rotor blade natural vibration frequency. Proposed rotor blade has leading edge, trailing edge, first side wall and second side wall. First and second side walls are connected in axial direction to leading and trailing edges, and side walls pass in radial direction between rotor blade and head. Method includes determination of conditions of rotor blade vibration resonance and forming of blade extension between rotor blade root and head which changes resonance conditions.
EFFECT: improved operation of steam turbine rotor.
4 cl, 2 dwg
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