| 摘要 |
PURPOSE:To prevent cracking under a bending stress and stress corrosion cracking due to corroding factors by a method wherein a device for connecting adjacent turbines to each other through through-holes provided at blade parts of turbine moving-blades is composed of a trunk part, flange parts provided at both ends of the trunk part and fitting parts projected from the flange parts. CONSTITUTION:Four moving blades 11a-11d placed in parallel at regular intervals are mutually connected mutually connected by the connecting device 13 placed at the position of the through-hole 12 drilled through each of the blade parts. In this case, the connecting device 13 is composed of a connector 14 which is placed between the moving blades 11b, 11c, connectors 15 which are placed between the moving blades 11a, 11b and between the moving blades 11c, 11d, respectively, and connectors 16 which are placed on each external surface side of the moving blades 11a, 11d. The connector 14, 15 is composed of the trunk part 14a, 15a, the flange parts 14b, 15b placed on both sides of the trunk part 14a, 15a and the fitting parts 14c, 15c which are projected from the external surface side of the flange parts 14b, 15b and fitted into the through-holes 12. Projections 18, 19 to be fitted into grooves 17 of the moving blades 11a-11d are provided at the peripheral edge parts of the external surfaces of the flange parts 14b, 15b. |
