| 摘要 |
PROBLEM TO BE SOLVED: To provide a reliable bucket of greatly improved vibration characteristics by making a plurality of group blade structure a group blade structure having one whole circumference without changing tie wire structure by using a connection device of simple installation work. SOLUTION: In the bucket, tie wires 9a1, 9a2 between adjoining group blades are bound by two cylindrical sleeves 20a, 20b fitting with binding the two tie wires 9a1, 9a2 and having an inner diameter larger than outer diameters of the tie wires 9a1, 9a2, and a turbine bucket connection device 12 (16) provided with keeping a predetermined gap between the two tie wires 9a1, 9a2 and comprising a connecting piece 21 having an outer diameter roughly same as an inner diameter of the sleeves. COPYRIGHT: (C)2008,JPO&INPIT
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