Fuel routing system of a gas turbine engine and method of routing fuel
First Claim
1. A fuel routing system of a gas turbine engine comprising:
- a primary fuel circuit feeding a fuel distribution manifold which directs fuel to a combustor chamber;
a secondary fuel circuit extending from an upstream location of the primary fuel circuit to a plurality of fuel nozzles configured to direct fuel to the combustor chamber, the secondary fuel circuit including a single fuel line that branches into a plurality of fuel lines that feed the plurality of fuel nozzles;
a main fuel flow control valve disposed in the primary fuel circuit, the main fuel flow control valve restricting a fuel flow to the fuel distribution manifold upon removal of an electrical load operably coupled to the gas turbine engine; and
a plurality of check valves located between the secondary fuel circuit and the primary fuel circuit for restricting the fuel flow from the secondary fuel circuit to the primary fuel circuit, the plurality of check valves being located on a plurality of fuel passages directly connecting a downstream location of the primary fuel circuit to the plurality of fuel lines.
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Accused Products
Abstract
A fuel routing system of a gas turbine engine includes a primary fuel circuit in communication with a fuel source and a fuel distribution manifold. Also included is a secondary fuel circuit extending from the primary fuel circuit to a plurality of fuel nozzles configured to direct fuel to a plurality of combustor chambers. Further included is a main fuel flow control valve disposed in the primary fuel circuit for restricting a fuel flow to the fuel distribution manifold upon removal of an electrical load operably coupled to the gas turbine engine. Yet further included is a plurality of check valves disposed between the secondary fuel circuit and the primary fuel circuit for restricting the fuel flow between the secondary fuel circuit and the primary fuel circuit.
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Citations
17 Claims
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1. A fuel routing system of a gas turbine engine comprising:
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a primary fuel circuit feeding a fuel distribution manifold which directs fuel to a combustor chamber; a secondary fuel circuit extending from an upstream location of the primary fuel circuit to a plurality of fuel nozzles configured to direct fuel to the combustor chamber, the secondary fuel circuit including a single fuel line that branches into a plurality of fuel lines that feed the plurality of fuel nozzles; a main fuel flow control valve disposed in the primary fuel circuit, the main fuel flow control valve restricting a fuel flow to the fuel distribution manifold upon removal of an electrical load operably coupled to the gas turbine engine; and a plurality of check valves located between the secondary fuel circuit and the primary fuel circuit for restricting the fuel flow from the secondary fuel circuit to the primary fuel circuit, the plurality of check valves being located on a plurality of fuel passages directly connecting a downstream location of the primary fuel circuit to the plurality of fuel lines. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification