| 摘要 |
PURPOSE:To prevent deterioration in durability due to remaining water by forming a water draining port in a tenon caulking part for fixing a shroud, and draining water in a gap space formed between said tenon and a tenon fitting hole of said shroud. CONSTITUTION:On an annular belt-like shroud 12, holes 12a are provided and tenons 13 are fitted into the holes 12a. Each end part of the tenons 13 is formed into a caulking part 14, whereby the shroud 12 connects more than one blade 11 in an annular state. A water draining port 15, which extends in the radial direction of a turbine shaft, is provided in the caulked part 14 of the tenon 13. And, the both end openings of the water draining port 15 are opened to a gap space 16 formed between a tenon 13 and the hole 12a of the shroud 12, and to a space 17 outside the tenon respectively, mutually connecting the both spaces 16, 17. Thereby, water drops which are deposited on the blade 11 and enter the gap space 16, are drained to the tenon-outside space 17 through a water draining port 15. |
