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FUEL INJECTOR INCLUDING A LOBED MIXER AND VANES FOR INJECTING ALTERNATE FUELS IN A GAS TURBINE

United States Patent Application

20170363291
A1
View the Complete Application at the US Patent & Trademark Office
A fuel injector for injecting alternate fuels having a different energy density in a gas turbine is provided. A first fuel supply channel (18) may be fluidly coupled to a radial passage (22) in a plurality of vanes (20) that branches into passages (24) (e.g., axial passages) to inject a first fuel without jet in cross-flow injection. This may be effective to reduce flashback in fuels having a relatively high flame speed. A mixer (30) with lobes (32) for injection of a second fuel may be arranged at the downstream end of a fuel delivery tube (12). A fuel-routing structure (38) may be configured to route the second fuel within a respective lobe so that fuel injection of the second fuel takes place radially outwardly relative to a central region of the mixer. This may be conducive to an improved (e.g., a relatively more uniform) mixing of air and fuel.
Laster, Walter Ray (Oviedo, FL), Fox, Timothy A. (Hamilton, Ontario, CA), Bartley, Robert H. (Oviedo, FL)
15/ 540,405
January 29, 2015
STATEMENT REGARDING FEDERALLY SPONSORED DEVELOPMENT [0001] Development for this invention was supported in part by Contract No. DE-FC26-05NT42644, awarded by the United States Department of Energy. Accordingly, the United States Government may have certain rights in this invention.