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 the primary fuel circuit to a plurality of fuel nozzles configured to direct fuel to the combustor chamber;
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; 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.
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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 the primary fuel circuit to a plurality of fuel nozzles configured to direct fuel to the combustor chamber; 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; 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of routing fuel in a gas turbine engine comprising:
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determining that an electrical load operably coupled to the gas turbine engine has been removed; closing a main fuel flow control valve for restricting a fuel flow along a primary fuel circuit to a fuel distribution manifold; and routing a fuel to a secondary fuel circuit in communication with a plurality of fuel nozzles comprising a portion of a total number of fuel nozzles of the gas turbine engine. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification