Bucket for next-to-the-last stage of a turbine

Details Bucket for next-to-the-last stage of a turbine Bucket for next-to-the-last stage of a turbine

1994-06-10

1995-08-29

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

416193R, 416223A, F01D 514

Patent

active

054454980

ABSTRACT:
A next-to-the-last stage steam turbine bucket has a profile according to the table set forth in the specification. The buckets also include continuous couplings at the bucket mid-point including nubs on each bucket projecting from opposite sides thereof in generally circumferentially extending directions. A sleeve is disposed between each pair of adjacent buckets and has open opposite ends for receiving the nubs of the adjacent buckets. The cross-sections of the nubs and open ends of the sleeve are generally complementary and non-circular to prevent sleeve rotation during turbine operation. The buckets have a continuous cover including cover elements having tenons projecting from opposite sides for reception in corresponding openings in the tips of adjacent buckets.

REFERENCES:
patent: 5267834 (1993-12-01), Dinh et al.
patent: 5286169 (1994-02-01), Dinh et al.
patent: 5299915 (1994-04-01), Dinh et al.
patent: 5326221 (1994-07-01), Amyot et al.

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