Method for repairing partitions of a turbine diaphragm

Details Method for repairing partitions of a turbine diaphragm Method for repairing partitions of a turbine diaphragm

1997-05-16

1999-04-20

Ryznic, John E.

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Vane or deflector

4152084, 4152094, F01D 102, F03B 100, F04D 2944

Patent

active

058952055

ABSTRACT:
The repair method includes removing eroded or damaged trailing edge portions of partitions in the diaphragm of a turbine, over 50% of the length of the partitions being removed commencing at the trailing edge. A coupon which is a precise replication of a portion of an originally specified partition is welded to the remaining or extant partition portion by a seal weld along the radial length of the coupon on the suction side of the repaired partition and two full penetration welds at the ends of the coupon to secure it to the inner and outer rings or side walls of the diaphragm. The repaired partition is thus substantially identically contoured as the original partition.

REFERENCES:
patent: 3215511 (1965-11-01), Chisholm et al.
patent: 3650635 (1972-03-01), Wachtell et al.
patent: 4026659 (1977-05-01), Freeman, Jr.
patent: 5062205 (1991-11-01), Fraser
patent: 5358379 (1994-10-01), Pepperman et al.

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