Fuel injectors for turbomachines
AssigneeDelavan Inc.
InventorsLev Alexander Prociw, Jason A. Ryon, Gregory A. Zink
Life of this patent
Estimating the term…
Abstract
A fuel injector for a multipoint injection system can include a body defining an air cavity for allowing air to flow therethrough and an interior cavity. A fuel is tube disposed at least partially within the interior cavity of the body. The fuel tube can include a first end configured to connect to a fuel injector connector of a fuel manifold, and a second end configured to connect to a fuel distributor of the fuel injector, wherein the fuel injector is configured to be disposed at least partially in a combustor dome. The fuel tube is configured to move in an axial direction to allow flexibility between the fuel manifold and the combustor dome.
Claims16
A fuel injector for a multipoint injection system, comprising:
- a body defining an air cavity for allowing air to flow therethrough and an interior cavity;
- a fuel tube disposed at least partially within the interior cavity of the body, wherein the fuel tube includes a first end configured to connect to a fuel injector connector of a fuel manifold, and a second end configured to connect to a fuel distributor of the fuel injector, wherein the fuel injector is configured to be disposed at least partially in a combustor dome, and
- wherein the fuel tube is configured to move in an axial direction to allow flexibility between the fuel manifold and the combustor dome, wherein the fuel tube is a coiled fuel tube, wherein the coiled fuel tube is contained within the interior cavity, wherein the body is formed from an outer heat shield and an inner heat shield disposed within the outer heat shield, wherein the outer shield is an annular wall extending in the axial direction, an axially extending portion of the annular wall covering the entirety of the coiled fuel tube.
A fuel injector system, comprising:
- a fuel manifold;
- a combustor dome mounted to the fuel manifold with one or more retainer rings;
- and
- a plurality of fuel injectors disposed in the combustor dome, each fuel injector connected to a fuel injector connector of the fuel manifold and configured to mix air and fuel, each fuel injector comprising:
- a body defining an air cavity for allowing air to flow therethrough and an interior cavity;
- a fuel tube disposed at least partially within the interior cavity of the body, wherein the fuel tube includes a first end configured to connect to a fuel injector connector of a fuel manifold, and a second end configured to connect to a fuel distributor of the fuel injector, wherein the fuel injector is configured to be disposed at least partially in the combustor dome, and
- wherein the fuel tube is configured to move in an axial direction to allow flexibility between the fuel manifold and the combustor dome, wherein the combustor dome is mounted to the fuel manifold to provide positive force to engage each fuel tube with each fuel injector connector of the manifold, wherein an axially forward end of at least one of the one or more retainer rings is axially aft of the combustor dome.
Dependencies are inferred from the claim text.