STRUCTURE BETWEEN CASCADES FOR AXIAL FLOW TURBINE STATOR AND ROTOR BLADES AND GAS TURBINE USING IT

摘要

PROBLEM TO BE SOLVED: To improve aerodynamic performance of a axial flow turbine blade.;SOLUTION: In the structure 10 between cascades for the axial flow turbine stator and rotor blades, suppressing plates 50 attached to an inner circumferential ring 30 of the stator blade is protruded into cavity 60. A plurality of the suppressing plates 50 are provided in an arrangement pitch P of the stator blade 20 so as to correspond to a flow flowing into the cavity 60 and a flow flowing out from the cavity 60. Since a vortex like flow 66 caused by an inflow and an outflow is efficiently reduced by providing the suppressing plates 50, energy loss of a working fluid mainstream 65 is reduced.;COPYRIGHT: (C)2003,JPO