| 摘要 |
PURPOSE:To efficiently cool without increasing cooling air quantity by providing a thermal conduction means which thermally connects a platform with a shank part between the side wall of the platform of a moving blade and the side wall of the shank part. CONSTITUTION:Collars 2 which thermally connect a platfrom 25 with a shank part 23 between the side wall of the platform 25 and the side wall of the shank part 23 are provided. Part of heats to be entered in the platform 25 by driving a gas turbine make collars 2, 2a, 2b to be transmitted to the shank part 23 by conduction, and ejected in turbine blade cooling air running through a cooling supply hole 27 inside the shank part 23. Part of the other heats are ejected from the surfaces of the collars 2, 2a, 2b to seal air 37b. By this process, heat of the platform 25 is transmitted to the shank part 23 through a thermal conduction means, and cooling for the platform 25 is strengthened without increasing cooling air quantity running through a cooling medium supply passage inside the shank part 23. |
