| 摘要 |
PROBLEM TO BE SOLVED: To prevent leakage of steam from steam piping arranged between a member to be supported and a casing by absorbing and following a thermal shrinkage difference between the member to be supported and the casing. SOLUTION: The steam piping structure of a gas turbine is provided with first connection pipes 54, 60, and 66 fixed at a casing 4, a blade ring 1, a recovery ring 25, second connection pipes 56, 61, and 67 fixed at a recovery ring 38 for cooling, a bellows pipe 57 having flexible structure situated between the first and second connection pipes, a spring 62 and a tube 63, and a piston ring 68. As a result, thermal shrinkage differences among the blade ring 1, the recovery ring 25, the recovering ring 38 for cooling, and the casing 4 can be absorbed and followed, and leakage of steam from steam piping 49, 50, 51, and 52 arranged among the blade ring 1, the recovery ring 25, the recovery ring 38 for cooling, and the casing 4 can be prevented from occurring. |
