Fuel nozzle and method of repair
AssigneePratt & Whitney Canada Corp.
InventorsHonza Stastny, Bhawan B. Patel, John Greer, Parthasarathy Sampath
Life of this patent
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Abstract
A method of repairing a modular gas turbine fuel nozzle tip, having a fuel-conveying body and an annular cap fastened to the body by at least two fasteners, includes removing the fasteners, replacing the annular cap with a replacement annular cap, and interconnecting the replacement annular cap and the body using new fasteners.
Claims19
A method of repairing a modular gas turbine fuel nozzle tip, the method comprising:
- providing the fuel nozzle tip having a fuel-conveying body and an annular cap fastened to the body by at least two fasteners;
- removing the at least two fasteners from the annular cap and the body;
- removing the annular cap from the body;
- positioning a replacement annular cap against the body in place of the removed annular cap;
- and
- interconnecting the replacement annular cap and the body using new fasteners, thereby fastening the replacement annular cap to the body.
A modular fuel nozzle tip for a gas turbine engine, the nozzle tip comprising:
- a body defining one or more fuel conveying passages extending between an inlet end and an outlet end of the body, the outlet end having a head portion with a peripheral end surface, the head portion having web portions extending radially therefrom, and at least two projections extending from the end of said web portions;
- an annular cap having a radially inner shoulder surface interfacing with the peripheral end surface of the body, the peripheral end surface and the shoulder surface defining a plurality of air channels extending through the head portion of the modular fuel nozzle tip;
- and
- at least two fasteners fastening the annular cap to the body, each fastener extending through the annular cap and into one of the projections.
A method of manufacturing a modular fuel nozzle tip for a gas turbine engine, the method comprising:
- providing a fuel-conveying body having a head portion containing a plurality of circumferentially spaced apart web portions separated by air channels extending through the head portion, each of said web portions having an axial projection extending upstream from a peripheral end surface of the head portion;
- providing a separately-formed annular cap;
- abutting the annular cap against the head portion of the fuel-conveying body, such that the axial projections are disposed radially inwardly from said annular rim of the annular cap;
- and
- fastening the annular cap in place on the fuel-conveying body using two or more fasteners, the fasteners radially extending through the annular cap and into the axial projections of the web portions.
Dependencies are inferred from the claim text.