Envelope forged stationary blade for L-2C row

Details Envelope forged stationary blade for L-2C row Envelope forged stationary blade for L-2C row

1992-05-08

1993-03-09

Kwon, John T.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural distributing means immediately upstream of runner

4152093, F01D 904

Patent

active

051921901

ABSTRACT:
A stationary blade for a steam turbine includes an airfoil portion having an inner diameter end and an outer diameter end; an inner ring portion integrally formed at the inner diameter end of the airfoil portion; and an outer ring portion integrally formed at the outer diameter end of the airfoil portion, the airfoil, inner ring and outer ring portions being envelope forged from a single bar stock, and each blade being welded together with an adjacent, substantially identical blade with welds provided at the inner and outer ring portions, the inner ring portion welds comprising a first, upstream weld and a second, downstream weld which is lower than the upstream weld.

REFERENCES:
patent: 2224519 (1940-12-01), McIntyre
patent: 2299449 (1942-10-01), Allen
patent: 2524869 (1950-10-01), Adamtchik
patent: 3034762 (1962-05-01), Fanti et al.
patent: 3313520 (1967-04-01), Ortolano et al.
patent: 3339889 (1967-09-01), Nyffeler
patent: 4288677 (1981-09-01), Sakata et al.
patent: 4714407 (1987-12-01), Cox et al.
patent: 4900223 (1990-02-01), Groenendaal et al.
patent: 4900230 (1990-02-01), Patel

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