Methods for tuning fuel injection assemblies for a gas...

Details Methods for tuning fuel injection assemblies for a gas... Methods for tuning fuel injection assemblies for a gas...

2008-05-27

2008-05-27

Bryant, David P. (Department: 3726)

Metal working

Method of mechanical manufacture

Impeller making

C029S889210, C029S889220, C029S401100, C060S742000, C060S780000, C415S115000, C416S181000

Reexamination Certificate

active

10957575

ABSTRACT:
A fuel nozzle assembly for a gas turbine includes a plurality of circumferentially spaced vanes with holes for flowing fuel from plenums within the vanes through holes in the vane walls for premixing with air. To tune the nozzle assembly, the holes are resized by reforming the existing holes to a predetermined hole size, securing plugs into the holes, and forming holes through at least certain of the plugs to diameters less than the diameter of the existing holes.

REFERENCES:
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patent: 5685139 (1997-11-01), Mick et al.
patent: 6243948 (2001-06-01), Lee et al.
patent: 6265022 (2001-07-01), Fernihough et al.
patent: 6370752 (2002-04-01), Anderson et al.
patent: 6413650 (2002-07-01), Dupree et al.
patent: 6892931 (2005-05-01), Steplewski et al.
patent: 6918742 (2005-07-01), Liang
patent: 7192622 (2007-03-01), Fernihough et al.

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