Methods and systems to facilitate over-speed protection

An over-speed protection system 40 for a gas turbine engine 10 including a rotor includes a fuel throttling/shutoff valve 50 coupled to a fuel supply coupled to the gas turbine engine, a first fuel system interface 56 coupled to the fuel throttling/shutoff valve, the first fuel systein interface con...

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Bibliographische Detailangaben
Hauptverfasser:	BERTRAM S NOYES JR, DAVID R VAN VACTOR
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	An over-speed protection system 40 for a gas turbine engine 10 including a rotor includes a fuel throttling/shutoff valve 50 coupled to a fuel supply coupled to the gas turbine engine, a first fuel system interface 56 coupled to the fuel throttling/shutoff valve, the first fuel systein interface configured to provide the throttling/shutoff valve with a signal indicative of an over-speed condition, a second fuel system interface 58 serially coupled to the first fuel system interface, the second fuel system interface configured to provide the throttling/shutoff valve with a signal indicative of an over-speed condition, and a control system 100 configured to identify an occurrence of an over-speed condition and to provide the first fuel system interface and the second fuel system interface with a signal corresponding to such an occurrence. The shutoff valve may comprise shutoff shuttle valves coupled to the first and second fuel system interfaces, or a servovalve coupled to a shutoff shuttle valve.