Internal manifold with fuel inlet
AssigneePratt & Whitney Canada Corp.
InventorOleg Morenko
Life of this patent
Estimating the term…
Abstract
A combustor assembly in a gas turbine engine includes a gas generator casing, an annular combustor supported within the casing, and a fuel injection system that includes an internal fuel manifold assembly having a fuel manifold ring with at least one fuel conveying passage in fluid flow communication with fuel injection nozzles. An inlet member is connected to the manifold ring and includes a drainage passage for collecting possible leaked fuel that is defined between the inlet member and a heat shield surrounding the inlet member. Any leaked fuel is discharged out of the inlet member at an exit of the fuel passage on an end surface of the inlet member proximate the second end thereof.
Claims8
A combustor assembly in a gas turbine engine comprising:
- a gas generator casing;
- an annular combustor supported within the gas generator casing, and
- a fuel injection system, the fuel injection system including:
- a fuel manifold ring disposed within the casing and adjacent to the combustor, the fuel manifold ring defining at least one fuel conveying passage therein in fluid flow communication with a plurality of fuel injection nozzles adapted for spraying fuel into the combustor, the manifold ring having an inlet port in fluid flow communication with the at least one fuel conveying passage,
- an elongate inlet member having two longitudinally opposed first and second ends, the inlet member defining at least one inlet passage extending therethrough between the first and second ends of the inlet member, the first end being mounted to the inlet port of the manifold ring for communication therewith and the inlet member extending from the manifold ring, the at least one inlet passage being in fluid flow communication with the at least one fuel conveying passage, the inlet member defining a fuel drainage passage, the fuel drainage passage having an entry on a peripheral surface of the inlet member and an exit on an end surface of the second end of the inlet member,
- a heat shield surrounding the inlet member and being attached to the manifold ring proximate a first end of the heat shield, the heat shield extending through and being supported at an opening of the casing, the inlet member extending through the heat shield and away from a second end of the heat shield, the heat shield and the inlet member being spaced apart so as to define an annulus therebetween, the annulus having substantially closed ends and being in fluid flow communication with the fuel drainage passage of the inlet member;
- and
- at least one transfer tube having first and second ends, the first end of the transfer tube being connected to the inlet member proximate the second end thereof, the transfer tube being in fluid flow communication with the at least one inlet passage of the inlet member.
Dependencies are inferred from the claim text.