Method for fabricating a steam turbine diaphragm

Details Method for fabricating a steam turbine diaphragm Method for fabricating a steam turbine diaphragm

1983-03-21

1985-04-09

Moon, Charlie T.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291568CF, 29DIG13, 29DIG26, 29DIG48, 29416, 415185, 416213A, 416189, 416194, 416195, 219 69M, 219121EK, 219121LJ, B21K 304

Patent

active

045092389

ABSTRACT:
Blades in the steam path of a steam turbine diaphragm are assembled into slots in full circular bands and are structurally bonded thereto by welding. After stress relief, the bands are each separated into two 180 degree pieces by line cuts which pass between adjacent blades. The bands are then welded to semicircular rings having planar mating surfaces. The welding of the rings to the bands is performed with minimum welding without concern for whether the welds enter the interface sufficiently far to contact the blades themselves.

REFERENCES:
patent: 1470499 (1923-10-01), Steenstrup
patent: 1470502 (1923-10-01), Steenstrup
patent: 1470507 (1923-10-01), Steenstrup
patent: 1938382 (1933-12-01), Haigh
patent: 2264877 (1941-12-01), Haigh
patent: 2299449 (1942-10-01), Allen
patent: 2373558 (1945-04-01), Haigh
patent: 3532437 (1970-10-01), Strub
patent: 3564188 (1971-02-01), Dathe
patent: 3802046 (1974-04-01), Wachtell et al.
patent: 4288677 (1981-09-01), Sakata et al.

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