GAS TURBINE FLEXIBLE FUEL NOZZLE MANIFOLD UNIT
Publication Date: 2005-Oct-12
The IP.com Prior Art Database
An integrally assembled fuel nozzles and flexible manifold unit for a gas turbine engine that can be assembled and tested for functional check and leakage at a bench prior to easier installation on the engine. Asymmetric bolt holes optionally ensure proper orientation of the nozzle when pre-assembled on the flexible manifold.
INVENTOR: Gilles Goudreau
An integrally assembled fuel nozzle and flexible manifold unit for a gas turbine engine that can be pre-assembled and tested for leakage and functionality prior to installation on an engine.
BACKGROUND OF THE ART
Gas turbine engines generally include a number of fuel nozzles arranged circumferentially about an annular combustion chamber. Fuel is provided to each nozzle via fuel supply lines and fuel supply manifolds about the exterior of the engine core.
During routine maintenance, nozzles are removed, inspected, cleaned and reinstalled. As many detachable parts must be handles in an often restrictive airframe area, this can lead to difficulties in servicing, gaskets, O-rings, nozzles, manifolds and bolts and increase the possibilities for mistake.
An example of fuel nozzle for gas turbine engine with external and internal removal capability is shown in U.S. Patent No. 4,466,240 to Miller.
DISCLOSURE OF THE INVENTION
The invention provides an integrally assembled fuel nozzles and flexible manifold unit for a gas turbine engine that can be pre-assembled, tested leak checked at a mechanic's bench (all nozzles onto the flexible manifold) prior to fool proof installation in the engine. Only one part is required to be installed on the engine, which results in a simpler installation on the engine and airframe.
Optionally, asymmetric bolt holes can also ensure proper orientation of the nozzle when mounted to the gas generator of the engine.
DESCRIPTION OF THE DRAWING
Figure 1 is a side view of a fuel nozzle, mounting plate, gasket and manifold cap.
Figure 2 is a bottom view showing the connecting bolt arrangements with asymmetric bolts to ensure proper orientation of the nozzle tip.