Staging valve arrangement and valve for use therein
AssigneeRolls-Royce Controls and Data Services Limited
InventorsNeil Rawlinson, Michael Robert Lyons, William Keith Bradbury, Laurence Alden, Blair Ramsay, Mark Scully
Life of this patent
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Abstract
A staging valve arrangement is described that comprises an arrangement of electrically driven staging valves that are located, in use, in the high temperature core zone of an engine. Each staging valve may comprise a housing having an inlet, a pilot flow outlet and a mains flow outlet, a valve member movable between a closed position in which the mains flow outlet is closed and an open position in which the mains flow outlet is open, a motor operable to drive the valve member for movement, and a cooling arrangement.
Claims9
A gas turbine configured with a staging valve comprising a housing having an inlet, a pilot flow outlet which is configured to feed fuel to a pilot burner of the gas turbine, a first mains flow outlet which is configured to feed fuel to a main burner of the gas turbine, and a second mains flow outlet which is configured to feed fuel to the main burner, a valve member, a motor operable to drive the valve member for movement, and a cooling arrangement, wherein the valve member is movable by the motor between a closed position in which the first and second mains flow outlets are closed, an intermediate position in which the first mains flow outlet is open and the second mains flow outlet is closed, and a fully open position in which the first and second mains flow outlets are open.
Dependencies are inferred from the claim text.