| 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 cylindrical support part formed on a cylindrical support member at a shaft side of the gas turbine and a cylindrical connection part formed on at least a turbine disk of the gas turbine. SOLUTION: In the shrinkage fitting fastening structure, when a rear shaft 11 and the turbine disk 7 at the latter stage are rotated with a shaft 1 at a high speed, regarding a cylindrical connection part 7B at an outer peripheral side of the shrinkage fitting fastening structure auxiliarily reinforced in a centrifugal direction of winding of a rope 14 made of carbon fiber, deflection in the centrifugal direction is suppressed, and regarding the cylindrical support part 11A at an inner peripheral side, deflection in the centrifugal direction is allowed. Therefore, the cylindrical support part 11A at an inner peripheral side is deflected in the centrifugal direction, and its outer peripheral fitting surface 11B is pressed to an inner peripheral fitting surface 7B1 of the cylindrical connection part 7B at an outer peripheral side. Thereby, occurrence of relaxing of the shrinkage fitting fastening structure is certainly prevented. COPYRIGHT: (C)2008,JPO&INPIT
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