Patent ID: 7029236
Filing Date: 2006-04-18
Classification: F01D,F02C,F05D

Abstract:
1. A gas turbine having rotor wheels of a plurality of stages and moving blades of a plurality of stages arranged in a flow direction of a main flow gas of the gas turbine, said moving blades being fixed to outer peripheries of said rotor wheels of said respective stages, and a coolant being supplied to moving blades of at least first and second stages of said plurality of stages on an upstream side with respect to the main gas flow, wherein a coolant supply flow path for said first stage moving blades and a coolant supply flow path for said second stage moving blades have a branch point at which said coolant supply flow paths are branched, said coolant supply flow path for said first stage moving blades and said coolant supply flow path for said second stage moving blades have hole portions formed in said rotor wheels for said first and second stages, respectively, said hole portions being connected to hole portions formed inside said moving blades of said first and second stages, respectively, and members, each having a coolant flow rate change portion, are provided in said connected hole portions for supplying coolant for said second stage moving blades.