| 摘要 |
PROBLEM TO BE SOLVED: To reduce stress through improvement of design with respect to a shroud tip and thus, improve the performance and service life of a bucket. SOLUTION: In one embodiment, the turbine (1) bucket (20) includes a tip shroud with a front edge and a following edge, and the front edge and the following edge include a Z-notch profile according to the Cartesian coordinate values of X, Y and Z set forth in Table 1; wherein the coordinate values are dimensional values representing a distance from an origin of an internal coordinate system for the bucket (20); and wherein when the X and Y values are connected by smooth continuing arcs, the Z-notch profile is defined. COPYRIGHT: (C)2009,JPO&INPIT
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