Fuel nozzle structure

摘要

A gas turbine engine fuel nozzle apparatus includes: an annular outer body, the outer body extending parallel to a centerline axis, and having a generally cylindrical exterior surface extending between forward and aft ends, and having a plurality of openings passing through the exterior surface; an annular main injection ring disposed inside the outer body, the main injection ring including an annular array of fuel posts extending radially outward therefrom; a main fuel gallery extending within the main injection ring in a circumferential direction; a plurality of main fuel orifices, each main fuel orifice communicating with the main fuel gallery and extending through one of the fuel posts; and a suspension structure connecting the main injection ring to the outer body, the suspension structure configured to substantially rigidly locate the position of the main ring in axial and lateral directions while permitting controlled deflection in a radial direction.

主权项

1. A fuel nozzle apparatus for a gas turbine engine, comprising:
an annular outer body, the outer body extending parallel to a centerline axis, the outer body having a generally cylindrical exterior surface extending between forward and aft ends, and having a plurality of openings passing through the exterior surface; an annular main injection ring disposed inside the outer body, the main injection ring including an annular array of fuel posts extending radially outward therefrom; a main fuel gallery extending within the main injection ring in a circumferential direction; a plurality of main fuel orifices, each main fuel orifice communicating with the main fuel gallery and extending through one of the fuel posts; and a suspension structure connecting the main injection ring to the outer body, the suspension structure configured to permit deflection of the main injection ring in a radial direction, wherein the suspension structure includes: an annular flange extending radially inward from the outer body aft of the openings; an annular inner arm extending forward from the flange in a generally axial direction, and passing radially inboard of the main injection ring; an annular outer arm extending axially forward from the main injection ring; and a U-bend interconnecting the inner and outer arms at a location axially forward of the main injection ring.