| 摘要 |
PROBLEM TO BE SOLVED: To provide a shrinkage fitting fastening structure for a gas turbine capable of certainly preventing occurrence of relaxing of the shrinkage fitting fastening structure between a support member at a shaft side of the gas turbine and a cylindrical connection part or a cylindrical support member at at least a turbine disk side of a compressor disk and the turbine disk. SOLUTION: In the shrinkage fitting fastening structure, when the compressor disks 4, 5 and the turbine disks 6, 7 are rotated with a shaft 1 at a high speed, a first shrinkage fitting fastening part 11A at a rear shaft 11 side arranged at an inner peripheral side of the shrinkage fitting fastening structure is relatively largely deflected in a centrifugal direction relative to a second shrinkage fitting fastening part 7B2 of a cylindrical arm 7B arranged at an outer peripheral side by addition of each mass. Therefore, an outer peripheral fitting surface 11B of the first shrinkage fitting fastening part 11A at an inner peripheral side is pressed to an inner peripheral fitting surface 7B1 of the second shrinkage fitting fastening part 7B2 at an outer peripheral side, and occurrence of relaxing of the shrinkage fitting fastening structure is certainly prevented. COPYRIGHT: (C)2008,JPO&INPIT
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