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| Number | Title | Issue Date |
| 8176721 | Methods and apparatus for a nitrogen purge system A method of operating a fuel system is provided. The method includes removing fuel from at least a portion of the fuel system using a gravity drain process. The method also includes channeling nitrogen into at least a portion of the fuel system to facilitate removin... | 05/15/2012 |
| 8122699 | Ecology valve fuel return system operable in fluid isolation during gas turbine engine shut-down An ecology valve (EV) fuel return system includes a housing assembly, an ecology valve, and a fuel routing assembly. The ecology valve includes an EV piston slidably disposed within the housing assembly for movement between a fuel storage position and a fuel return ... | 02/28/2012 |
| 8099940 | Low cross-talk gas turbine fuel injector A pilot assembly for a fuel injector of a gas turbine engine may include a longitudinal passageway having an outlet end. A mass flow in the longitudinal passageway may generally flow towards the outlet end during operation of the engine. The pilot assembly may also ... | 01/24/2012 |
| 8046983 | Ecology valve fuel return system for gas turbine engine An ecology valve (EV) fuel return system is provided. In one embodiment, the EV fuel return system includes a housing assembly having a fuel return outlet and a first manifold inlet. The fuel return outlet is fluidly coupled to a fuel supply system, and the first ma... | 11/01/2011 |
| 7954310 | Fuel oil bi-directional flow divider A fuel purge system for a combustion turbine engine fuel supply system (32) to remove fuel from the fuel system (32). The system (32) includes a fuel supply line (40, 42, 44) for supplying fuel from a fuel source (38) to a pluralit... | 06/07/2011 |
| 7937926 | Integral heater for fuel conveying member A fuel conveying member for an engine, the fuel conveying member having heating means integrated therein to permit pyrolysis of carbonaceous deposits. ... | 05/10/2011 |
| 7861509 | Methods and systems for gas turbine syngas warm-up with low emissions Methods and systems of operating an integrated gasification combined cycle system are provided. The method includes coupling a non-fuel fluid conduit to a fuel conduit, warming a flow of non-fuel fluid, and channeling the warmed non-fuel fluid through the fuel condu... | 01/04/2011 |
| 7818955 | Fuel injection system and purging method A fuel injection system has a fuel lance for supplying gaseous fuel to the burner of a gas turbine engine. The fuel lance includes a gas sensor that is used to monitor the concentration of the methane fuel inside the gas pilot channel of the fuel lance. The inventio... | 10/26/2010 |
| 7730711 | Methods and apparatus for a combustion turbine nitrogen purge system A method of operating a fuel system is provided. The method includes removing fuel from at least a portion of the fuel system using a gravity drain process. The method also includes channeling nitrogen into at least a portion of the fuel system to facilitate removin... | 06/08/2010 |
| 7726112 | Fuel system of gas turbine engines A method for purging fuel from a fuel system of a gas turbine engine on shutdown of the engine comprises, in one aspect, terminating a fuel supply to the fuel system and using the residual compressed air to create a reversed pressure differential in the fuel system ... | 06/01/2010 |
| 7721521 | Methods and apparatus for a combustion turbine fuel recirculation system and nitrogen purge system A method of operating a fuel system is provided. The method includes removing fuel from at least a portion of the fuel system using a gravity drain process. The method also includes channeling nitrogen into at least a portion of the fuel system to facilitate removin... | 05/25/2010 |
| 7677025 | Self-purging pilot fuel injection system A gas turbine combustor having a self-purging pilot fuel injection system and method of operation thereof is disclosed. The pilot fuel injection system comprises a radial inflow swirler, a generally axially extending centerbody, and at least one fuel injection sourc... | 03/16/2010 |
| 7430851 | Air and fuel venting device for fuel injector nozzle tip In a fuel injector assembly, for an internal combustion engine such as a gas turbine engine, a generally cylindrical air transfer sleeve is, in one embodiment, juxtaposed around a shroud, the sleeve having a peripheral inner recessed cavity, the outer end thereof en... | 10/07/2008 |
| 7386982 | Method and system for detecting ignition failure in a gas turbine engine A method of operating a gas turbine engine is provided. The method includes introducing a fuel into a combustor, detecting a failure of ignition of the fuel, and preventing ignition until the introduced fuel is substantially removed from the gas turbine engine. ... | 06/17/2008 |
| 7337761 | Fuel system A fuel system comprises a spill valve 38 operable to relieve the fuel pressure differential across at least one positive displacement pump 16, 18, a shut-off valve 32 operable to control the supply of fuel to an engine 84, and a two stage... | 03/04/2008 |
| 7334389 | Afterburner igniter A gas turbine engine afterburner igniter is provided with primary fuel duct means for injecting a jet of fuel into a gas stream directed into a combustion chamber. A spring is positioned within the bore of said fuel duct. The spring being moveable relative to said d... | 02/26/2008 |
| 7320212 | Side-fed shielded internal fuel manifold inlet tube In a gas turbine engine, a fuel inlet tube comprising a body, a channel defined in the body and in fluid communication with a manifold, and a side inlet in fluid communication with the channel, such that fuel entering the side inlet is delivered to the manifold thro... | 01/22/2008 |
| 7315849 | Enterprise-wide data-warehouse with integrated data aggregation engine An enterprise-wide data-warehouse comprising a database management system (DBMS) including a relational datastore storing data in tables. An aggregation module, operatively coupled to the relational datastore aggregates the data stored in the tables of the relationa... | 01/01/2008 |
| 7296412 | Nitrogen purge for combustion turbine liquid fuel system Method for preventing coking of liquid hydrocarbon fuel in a liquid fuel supply system of a gaseous fuel/liquid fuel combustion turbine comprises injecting nitrogen gas into the liquid fuel supply system to displace a portion of the liquid hydrocarbon fuel adjacent ... | 11/20/2007 |
| 7249460 | Fuel injection system for a turbine engine To improve the burning efficiency of fuel supplied to a turbine engine by electronic fuel injectors under control of a fuel injection control system, a nebulizer of unique design is employed with the fuel injectors to further reduce the individual fuel cell size fro... | 07/31/2007 |
| 7200985 | Fuel delivery system having an ecology valve A fuel control system for a gas turbine engine is disclosed that includes a flow path carrying fuel from a fuel source to a combustion chamber, an ecology valve 124 for removing a quantity of fuel from the flow path, the ecology valve 124 being shiftab... | 04/10/2007 |
| 7197879 | Multiple electric fuel metering systems for gas turbine applications The present invention provides a multiple manifold fuel metering system with a separate motor, pump, and shut-off/purge valve for each manifold. The present invention may be used for metering fuel to any engine, especially a gas turbine engine. The fuel metering sys... | 04/03/2007 |
| 7155896 | Combustor drain valve A system for draining fuel from the combustion chamber of a gas turbine engine in the event of a false start includes associated passageways and a straight through flow pilot air actuated poppet valve. The valve is normally open and actuated by the pilot air to clos... | 01/02/2007 |
| 7137242 | Fuel system A fuel control system for a staged combustion engine comprising, a fuel metering unit including a fuel metering valve having a fuel metering orifice the opening of which is varied to meter the flow of fuel through the metering valve in use, a fuel staging unit recei... | 11/21/2006 |
| 7137256 | Method of operating a combustion system for increased turndown capability A method of operating a gas turbine engine combustion system at lower load conditions while maintaining required emissions levels is disclosed. The present invention includes multiple embodiments of axial, radial, and circumferential fuel staging within a can-type c... | 11/21/2006 |
| 7131274 | Method to transfer fuel in a fuel system for a gas turbine engine A system for automatically transferring the fuel from one or more engine fuel manifolds directly to the engine fuel tank(s) during engine shutdown using an ejector pump has been presented. A checkvalve, which may be integrated with the ejector pump, is also used. A ... | 11/07/2006 |
| 7121512 | Drain particularly for engine support strut A drain, for example for an aircraft engine support strut, arranged on the trailing edge of the rear secondary structure of the strut. The drain includes a conduit with a substantially horizontal axis and a substantially rectangular cross-section, taken in a plane p... | 10/17/2006 |
| 7117679 | Fuel injection In order to allow dual fuel operation, that is to say gas and liquid fuel, a fuel injection arrangement and an assembly are provided in which an injection conduit provides constriction to an airflow towards an outlet. In an assembly a plurality of arrangements inclu... | 10/10/2006 |
| 7117675 | Cooling of liquid fuel components to eliminate coking A system for cooling at least one gas turbine liquid fuel component located in a high temperature environment to eliminate coking in the component is disclosed. The system includes a sleeve surrounding the liquid fuel component, a device for providing a current of c... | 10/10/2006 |
| 7093420 | Flow divider and ecology valve A fuel flow dividing ecology valve conveys fuel from a fuel source to at least a secondary gas turbine engine intake manifold during engine operation and withdraws fuel therefrom upon cessation of engine operation. The valve includes a flow dividing valve portion ha... | 08/22/2006 |
| 7093419 | Methods and apparatus for operating gas turbine engine combustors A method facilitates assembling a gas turbine engine. The method comprises coupling a combustor including a dome assembly and a combustor liner that extends downstream from the dome assembly to a combustor casing that is positioned radially outwardly from the combus... | 08/22/2006 |
| 7024862 | System and method for controlling combustion in gas turbine with annular combustor A gas turbine system composed of a gas turbine engine and a controller. The gas turbine engine includes an annular combustor, and a turbine driven by combustion gas from the annular combustor to rotate on a longitudinal centerline axis of the gas turbine engine. The... | 04/11/2006 |
| 7007452 | Fuel system for a gas turbine engine A system for automatically transferring the fuel from one or more engine fuel manifolds directly to the engine fuel tank(s) during engine shutdown using an ejector pump has been presented. A checkvalve, which may be integrated with the ejector pump, is also used. A ... | 03/07/2006 |
| 6959536 | Fuel pump metering system The present invention provides a widely variable and yet precisely controlled system for metering the flow of fuel to an engine component. The present invention utilizes a plurality of solenoid activated injector valves to meter fuel into an output plenum where the ... | 11/01/2005 |
| 6959535 | Differential pressure induced purging fuel injectors A fuel injector includes an annular main fuel nozzle received within an annular nozzle housing, a main nozzle fuel circuit having at least one annular leg, and a pilot nozzle fuel circuit. Spray orifices of the leg extend through the fuel nozzle and spray wells thro... | 11/01/2005 |
| 6955038 | Methods and apparatus for operating gas turbine engine combustors A method facilitates assembling a gas turbine engine. The method comprises coupling a combustor including a dome assembly and a combustor liner that extends downstream from the dome assembly to a combustor casing that is positioned radially outwardly from the combus... | 10/18/2005 |
| 6931831 | Distributor purge valve A combination distributor purge valve unit for a turbine engine has a pilot air section, a fuel section, a distributor section and a purge air section. A spool moves along a spool axis to control flow through six sets of radially arranged removable fill nozzles and ... | 08/23/2005 |
| 6898926 | Cooled purging fuel injectors A fuel injector includes a main fuel nozzle with a main nozzle fuel circuit and a pilot nozzle fuel circuit in fuel supply communication with a pilot nozzle. The injector further includes a purge means for purging the main nozzle fuel circuit while the pilot nozzle ... | 05/31/2005 |
| 6892544 | Flow divider & purge air system for a gas turbine engine A purge air and fuel flow divider module (15) independently directs fuel flow to a plurality of manifolds (25, 27 and 29) and independently purges fuel from these manifolds with air when they are not flowing fuel. A secondary manifold (29... | 05/17/2005 |
| 6889506 | Gas and steam turbine installation A gas and steam turbine installation including a gasification device for fossile fuel. The gasification device and the combustion chamber of the gas turbine are connected by a gas line. A gas lock is connected to the gas line. The gas lock includes a quick acting ar... | 05/10/2005 |
