FUEL INJECTOR WITH A DIFFUSING MAIN GAS PASSAGE

摘要

A fuel injector for a combustor of a gas turbine engine is disclosed. The fuel injector includes a gas gallery and a gas passage. The gas gallery is an annular passage configured to circumferentially distribute gas fuel. The gas passage includes an inlet and an outlet. The inlet is distal to the gas gallery and includes an inlet area with a circular shape. The outlet adjoins the gas gallery and includes an outlet area including an annular sector shape. The gas passage is configured to diffuse the gas fuel and discharge the gas fuel from the outlet and into the gas gallery.

主权项

1. An injector head of a fuel injector for a combustor of a gas turbine engine, the injector head comprising:
a gallery enclosure forming a gas gallery, the gas gallery being an annular passage configured to circumferentially distribute a gas fuel; and a main body adjacent the gallery enclosure, the main body including
a gas passage with
an inlet distal to the gas gallery, the inlet including an inlet cross-sectional area with a circular shape, andan outlet adjoining the gas gallery and in fluid communication with the inlet, the outlet including an outlet cross-sectional area with an annular sector shape,wherein the gas passage cross-section transitions from the inlet cross-sectional area to the outlet cross-sectional area and is configured to diffuse the gas fuel and discharge the gas fuel into the gas gallery.