초록 ▼

The liquid fuel injector includes continuous air assist with both the liquid fuel injector tube and the surrounding air assist tube constrained or reduced in diameter at the discharge ends thereof The associated gas turbine engine compressor provides combustion air to the combustor and also air for

The liquid fuel injector includes continuous air assist with both the liquid fuel injector tube and the surrounding air assist tube constrained or reduced in diameter at the discharge ends thereof The associated gas turbine engine compressor provides combustion air to the combustor and also air for continuous air assist with a separate air pump. The air assist air may be cooled in a heat exchanger either before or after the separate air pump. The liquid fuel injector may be mounted within an annular air blast tube and directed tangentially at the inner wall of the combustor. A solenoid valve controlled purge line, together with solenoid valves in the liquid fuel and air assist lines can be utilized to purge any liquid fuel in the liquid fuel injector and manifold upon shutdown of the combustor. The liquid fuel injector can also be insulated and liquid fuel can be used to cool the fuel injector.

대표청구항 ▼

[ It is claimed:] [1.] A liquid fuel injector purge system for a gas turbine engine, comprising:an annular combustor having an outer wall, an inner wall, a closed upstream end, and an open discharge end;a plurality of liquid fuel injectors spaced around the periphery of the closed end of said combus

[ It is claimed:] [1.] A liquid fuel injector purge system for a gas turbine engine, comprising:an annular combustor having an outer wall, an inner wall, a closed upstream end, and an open discharge end;a plurality of liquid fuel injectors spaced around the periphery of the closed end of said combustor to direct liquid fuel/air into said combustor;a liquid fuel inlet conduit to each of said plurality of liquid fuel injectors, said liquid fuel inlet conduit having a liquid fuel control valve and a liquid fuel on/off solenoid valve;an air assist conduit to each of said plurality of liquid fuel injectors, said air assist conduit having a solenoid valve; anda liquid fuel purge conduit extending from said liquid fuel conduit, disposed between said liquid fuel on/off solenoid valve and said plurality of liquid fuel injectors, and having a purge line solenoid valve, so that when said gas turbine engine is shut down and said liquid fuel inlet on/off solenoid valve and said air assist solenoid valve are both closed, liquid fuel is purged through said liquid fuel purge line whose solenoid valve is open.