| 摘要 |
PROBLEM TO BE SOLVED: To surely prevent axial direction displacement of a bush at the time of turbine operation so as to use a bush holder at a high centrifugal force field by forming a counter boring in a penetrating opening port of a wheel and a space for taking a steam supplying pipe and a steam return pipe into, and arranging an annular member therein. SOLUTION: In a gas turbine rotor R, a plurality of wheels carries a plurality of buckets or moving blades, a plurality of spacers which are alternately disposed matches with a plurality of static blades or nozzles, and each wheel and each spacer 28 are mutually fastened by a plurality of bolts. In this case, a thin wall sleeve is disposed in a return pipe 42 inserted into a penetrating opening port 56 of the spacer 28, a heaving land is disposed on a plurality of axial direction separating positions along the thin wall sleeve, and they are engaged with a bush 48. A holding ring 62 is disposed for obstructing backward displacement of the bush 48, and is disposed in an annular groove 64 in a counter boring 54 formed just after the bush 48. |
