| 摘要 |
PROBLEM TO BE SOLVED: To provide a turbine rotor assembly, a blade stopper plate in the turbine rotor assembly and a method of installing the blade stopper plate, which can reduce leakage of working fluid and eliminate a windage loss caused by high speed rotation.SOLUTION: A turbine rotor assembly 10 comprises plural axial grooves 12 formed in the outer periphery of a rotor disk 11, and a rotor blade group 14n fixed in the axial grooves along the circumferential direction of the rotor disk with blade roots 14a fitted in the axial grooves via blade stopper plates 13. The blade stopper plate has a base part 13a fitted in the axial groove, end parts which are at both ends of the base part and project out of the axial groove, and bending parts 13b in which the end parts are bent in the radial direction of the rotor disk 11 to close gaps formed between the blade root and the axial groove. The bending parts cover almost all over the fitted part between the blade root and the axial groove. |
