Patent ID: 6065281
Filing Date: 2000-05-23
Classification: F02C,F05D,F23D,F23R

Abstract:
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, 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 and a restrictive orifice, so that when said gas turbine engine is shut down and said liquid fuel inlet or/off solenoid valve is closed, liquid fuel is sucked through the liquid fuel purge line restrictive orifice with the liquid fuel purge line solenoid valve open.