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Multi-tube thermal fuse for nozzle protection from a flame holding or flashback event

United States Patent

July 3, 2012
View the Complete Patent at the US Patent & Trademark Office
A protection system for a pre-mixing apparatus for a turbine engine, includes: a main body having an inlet portion, an outlet portion and an exterior wall that collectively establish a fuel delivery plenum; and a plurality of fuel mixing tubes that extend through at least a portion of the fuel delivery plenum, each of the plurality of fuel mixing tubes including at least one fuel feed opening fluidly connected to the fuel delivery plenum; at least one thermal fuse disposed on an exterior surface of at least one tube, the at least one thermal fuse including a material that will melt upon ignition of fuel within the at least one tube and cause a diversion of fuel from the fuel feed opening to at least one bypass opening. A method and a turbine engine in accordance with the protection system are also provided.
Lacy; Benjamin Paul (Greer, SC), Davis, Jr.; Lewis Berkley (Niskayuna, NY), Johnson; Thomas Edward (Greer, SC), York; William David (Greer, SC)
General Electric Company (Schenectady, NY)
12/ 260,451
October 29, 2008
STATEMENT OF GOVERNMENT SPONSORED RESEARCH This invention was made with Government support under Contract No. DE-FC26-05NT4263, awarded by the US Department of Energy (DOE). The Government has certain rights in this invention.