AXIAL-FLOW COMPRESSOR AND GAS TURBINE WITH AXIAL-FLOW COMPRESSOR

摘要

PROBLEM TO BE SOLVED: To provide an axial-flow compressor including dovetails capable of reducing partial contact with a wheel dovetail, leveling loads asymmetrical between a forward direction of a blade rotation direction and a direction opposite to the rotation direction, and reducing high stress acting on rotor blades.;SOLUTION: An axial-flow compressor including rotor blades and stationary vanes compressing the air drawn in from the atmosphere as a working fluid; and a wheel fixing the rotor blades and a casing fixing the stationary vanes, comprises: a wheel dovetail processed on an outer circumferential surface of the wheel, the wheel dovetail having a constant angle with respect to a rotary shaft of the axial-flow compressor; and blade dovetails processed on inner circumferences of the respective rotor blades to be fixedly fitted into the wheel dovetail, cut surfaces obtained by cutting part of the blade dovetail into a planar shape, cut surfaces being formed on the blade dovetails on at least either upstream of the blade dovetails or downstream of the blade dovetails.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2016,JPO&INPIT