Turbine nozzle segment and repair method

Details Turbine nozzle segment and repair method Turbine nozzle segment and repair method

2007-03-07

2010-11-23

Kershteyn, Igor (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural distributing means immediately upstream of runner

C415S209300, C029S889100

Reexamination Certificate

active

07837437

ABSTRACT:
A method of repairing a turbine nozzle segment having at least one vane disposed between outer and inner bands. The method includes using an salvageable part, such as honeycomb backing strip remnant, from a nozzle segment that is unrepairable, and joining the honeycomb backing strip to a replacement casting. The replacement casting includes a tenon formed on the inner band that mates with a mortise formed on the back side of the honeycomb backing strip. A nozzle segment and nozzle segment casting used in connection with the method is also disclosed.

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patent: 5269057 (1993-12-01), Mendham
patent: 5584654 (1996-12-01), Schaefer et al.
patent: 6354797 (2002-03-01), Heyward et al.
patent: 6416278 (2002-07-01), Caddell, Jr. et al.

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