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| Number | Title | Issue Date |
| 8186168 | Thrust balance of rotor using fuel A method of at least partially balancing axial thrust loads and an engine in which the method is carried out is disclosed herein. The engine includes a combustion chamber and a fuel system operable to direct pressurized fuel to the combustion chamber. The engine als... | 05/29/2012 |
| 8166767 | Gas turbine combustor exit duct and hp vane interface An assembly for a gas turbine engine includes a combustor and a vane assembly disposed downstream thereof. A portion of an outer platform of the vane assembly defines an axial sliding joint connection with the combustor, and includes a plurality of depressions locat... | 05/01/2012 |
| 8166768 | Systems and methods for passively directing aircraft engine nozzle flows Systems and methods for passively directing aircraft engine nozzle flow are disclosed. One system includes an aircraft nozzle attachable to an aircraft turbofan engine, with the nozzle including a first flow path wall bounding a first flow path and being positioned ... | 05/01/2012 |
| 8166764 | Flow sleeve impingement cooling using a plenum ring A combustor assembly for a turbine engine includes a combustor liner, a flow sleeve and a plenum ring. The flow sleeve surrounds the combustor liner to form an annulus radially between the combustor liner and the flow sleeve. The flow sleeve has a plurality of rows ... | 05/01/2012 |
| 8166765 | Fuel delivery and control system including a variable displacement actuation pump supplementing a fixed displacement main pump A fuel delivery and control system is provided including a dual pump fluid circuit configuration comprising a fixed positive displacement pump sized to supply the main engine burn flow ranging from above windmill through cruise and a variable displacement pump sized... | 05/01/2012 |
| 8166766 | System and method to generate electricity A split heat recovery steam generator (HRSG) arrangement including a first HRSG coupled to a turbine and thereby receptive of a portion of the exhaust gases to deliver the portion of the exhaust gases to a compressor, a second HRSG coupled to the turbine and thereby... | 05/01/2012 |
| 8151571 | Systems and methods for closed loop emissions control Systems and methods for controlling combustion emission parameters associated with a gas turbine combustor. The method can include providing an optical path through a gas turbine exhaust duct, propagating light along the optical path, measuring exhaust species absor... | 04/10/2012 |
| 8146366 | Method for operating a combined-cycle power plant, and combined-cycle power plant useful for carrying out the method A method involved operating a combined-cycle power plant (10), which has a gas turbine (11) with a compressor (12) and a turbine (13), a heat recovery steam generator (17) which is connected downstream to the gas turbine (11... | 04/03/2012 |
| 8141367 | System and methods for pre-heating fuel in a power plant A method for assembling a fuel supply system for use with a power generation system. The method includes coupling a fuel heater to a fuel source for heating a fuel. A first heating assembly is coupled to the fuel heater for heating a first flow of water channeled to... | 03/27/2012 |
| 8136360 | Method for observing combustion conditions in a gas turbine engine A fuel injector for a gas turbine combustor is disclosed which includes a feed arm having a flange for mounting the injector within the combustor and a fuel nozzle depending from the feed arm for injecting fuel into the combustor for combustion. An optical sensor ar... | 03/20/2012 |
| 8132416 | Combustion methods and fuels for the production of energy Apparatus and processes are provided for combusting hydrocarbon-containing waste fuel with an oxidizer, preferably liquid oxygen, and producing a substantially clean exhaust gas and a separate high purity steam product (e.g., superheated steam) that can be used to g... | 03/13/2012 |
| 8127556 | Method for operating a turbomachine having a syngas fuel supply system and a non-syngas fuel supply system The present invention provides a method of controlling a turbomachine having at least one fuel supply system that uses an unchoked valve. Here, the method may determine the flow characteristics of a fuel in a fuel supply system without using a flow meter. The presen... | 03/06/2012 |
| 8122724 | Compressor including an aerodynamically variable diffuser A compressor includes a diffuser, a recirculation duct, and a flow control valve. The recirculation duct has an inlet in fluid communication with the air outlet of the diffuser, and an outlet in fluid communication with the air inlet of the diffuser. The flow contro... | 02/28/2012 |
| 8091369 | Method and apparatus for generating electrical power A superheater in a power plant that superheats steam to operation conditions exceeding an operating limit of an associated steam-producing boiler. The superheater combusts oxygen and fuel with cooled recycled combustion gas to produce a CO2-rich combustio... | 01/10/2012 |
| 8020388 | Method for increasing the efficiency of a combined gas/steam power station with integrated gasification combined cycle The invention relates to a method for increasing the efficiency of a combined gas/steam power station (10) with integrated gasification combined cycle. Said power station comprises a gas turbine compressor (14) and an air-separation unit (18) ha... | 09/20/2011 |
| 8020387 | Method of operating a burner, including a combustion chamber with a low nitrous oxide emission There is described a method for operation of a burner, whereby a fuel is supplied to the burner, sprayed into the combustion air, mixed with the combustion air to give a fuel/air mixture and burnt in a combustion chamber. With regard to a combustion particularly low... | 09/20/2011 |
| 8015821 | Apparatus and method for a gas turbine entrainment system This invention relates to an apparatus for an entrainment system of a vortex burning combustion chamber or a vortex burning inter-turbine burner in a gas turbine. The entrainment system rapidly and thoroughly mixes hot combustion gases with non-combustion gases to r... | 09/13/2011 |
| 8015822 | Method for controlling an exhaust gas recirculation system The present invention takes the form of a method and system that may reduce the level of SOx emissions by recirculating a portion of the exhaust of at least one turbomachine; the portion of exhaust may be mixed with the inlet air prior to re-entering the turbomachin... | 09/13/2011 |
| 8011189 | Retrofit of simple cycle gas turbine for compressed air energy storage application having expander for additional power generation A Compressed Air Energy Storage (CAES) system includes a first combustion turbine assembly (42) having a shaft (52) coupled to a motor (54), a compressor (44) and a debladed turbine element (46). A second combustion turbine assembl... | 09/06/2011 |
| 7997081 | Gas delivery system A gas delivery system includes a gas booster module for delivering natural gas from a utility gas service to power generation equipment installed in or around a building in a manner that meets the minimum volume and pressure requirements of the power generation equi... | 08/16/2011 |
| 7997082 | Turbine engine arrangement A turbine engine arrangement includes an electrical machine that acts as a generator or motor. During initial start-up, the electrical machine acts as the motor to drive shaft rotation. The arrangement includes a compressor fan that generates an airflow utilized by ... | 08/16/2011 |
| 7966829 | Method and system for reducing COemissions in a combustion stream Disclosed herein are systems and methods for reducing power plant CO2 emissions. In one embodiment, a method for reducing emissions in a combustion stream, comprises: combusting a gaseous stream to produce an exhaust stream comprising carbon dioxide, and ... | 06/28/2011 |
| 7954330 | Method for operating a power plant and power plant A method for operating a power plant is disclosed. The power plant comprises a power machine and a flue gas flow path following downstream of the power machine. A flue gas flow path is scavenged with fresh air before the flue gas flow path is acted upon with flue ga... | 06/07/2011 |
| 7950238 | Method for detecting onset of uncontrolled fuel in a gas turbine combustor A method is provided for performing a transfer from gas fuel operation to liquid fuel operation in a gas turbine with a dual fuel system. The method includes initiating a predetermined uncontrolled liquid fuel prefill flow rate through the liquid fuel system, sensin... | 05/31/2011 |
| 7942008 | Method and system for reducing power plant emissions A method for operating a power plant to facilitate reducing emissions, wherein the power plant includes a gas turbine engine assembly and a carbon dioxide (CO2) separator. The method includes increasing an operating pressure of exhaust gas discharged from... | 05/17/2011 |
| 7937947 | Gas turbine and manufacturing process of gas turbine The invention is intended to maintain turbine reliability when, based on a gas turbine designed for one desired cycle, a gas turbine for another different cycle is manufactured. A channel of a compressor is formed such that a mass flow of a fluid compressed by the c... | 05/10/2011 |
| 7937946 | Small gas turbine engine with lubricated bearings A small gas turbine engine with a bearing cooling and lubricating passage arrangement for a high speed rotor shaft. The engine includes a bypass fan and a compressor. The rotor shaft includes a central passage extending through the entire shaft, and where the rotor ... | 05/10/2011 |
| 7930890 | Method for protecting the hot gas parts of a gas turbine installation from overheating and for detecting flame extinction in the combustion chamber A method for protecting a gas turbine installation from overheating and for detecting flame extinction in the combustion chamber is described, in which air is compressed in a compressor unit and, after being admixed with fuel, is ignited in the form of a fuel/air mi... | 04/26/2011 |
| 7926286 | Heat shield for a fuel manifold A fuel injection system for a gas turbine engine having a manifold ring, a plurality of spray tip assemblies and a heat shield including at least two heat shield segments cooperating to at least substantially surround a cross-section of the manifold ring around a ci... | 04/19/2011 |
| 7913495 | Gas turbine and manufacturing process of gas turbine The invention is intended to maintain turbine reliability when, based on a gas turbine designed for one desired cycle, a gas turbine for another different cycle is manufactured. A channel of a compressor is formed such that a mass flow of a fluid compressed by the c... | 03/29/2011 |
| 7874161 | Compressor inlet guide vane flow based anti-ice formation control system and method A system and method are provided for effectively removing ice that may have formed on gas turbine engine compressor inlet guide vanes and/or preventing, or at least inhibiting, reformation of ice on gas turbine engine compressor inlet guide vanes after the ice has b... | 01/25/2011 |
| 7874162 | Supercritical steam combined cycle and method A supercritical steam combined cycle system including a gas turbine; a supercritical steam turbine system including a supercritical section, a high pressure section, an intermediate pressure section and at least one low pressure section; and a supercritical steam he... | 01/25/2011 |
| 7866159 | Variable geometry hysteresis control for a gas turbine engine One embodiment of the present application is a gas turbine engine with a compressor that includes a variable geometry mechanism to vary working fluid flow area. A desired state of this mechanism is selected different than a current state to change the amount of flow... | 01/11/2011 |
| 7861532 | System and methods for heat recovery steam generators hot purging A method for operating an energy system includes calculating an auto-ignition temperature of a fuel in use with the energy system, storing the auto-ignition temperature in a system memory, unloading a gas turbine associated with the energy system to a pre-determined... | 01/04/2011 |
| 7836701 | Infrared suppression system An InfraRed Suppression System (IRSS) vectors engine exhaust flow away from the exhaust manifold plane, the high aspect ratio exhaust duct defined as a ratio of a maximum nozzle length to a maximum nozzle width, the ratio greater than 2:1. ... | 11/23/2010 |
| 7827803 | Method and apparatus for an aerodynamic stability management system A method for using an aerodynamic stability management system is disclosed. The method includes placing at least one pressure sensor in a compressor, the at least one pressure sensor communicating with an aerodynamic stability management system controller and monito... | 11/09/2010 |
| 7793506 | Emission controlled engine exhaust static test stand A method and apparatus for reducing the emission of pollutants resulting from static test firings of rocket and jet engines. The apparatus comprises a test stand for capturing the exhaust gas from an engine undergoing a static test. The test stand includes a duct sy... | 09/14/2010 |
| 7793505 | Gas turbine engine oil system operation A method of operating a gas turbine engine having at least one electric machine associated therewith, the engine having an oil system communicating with an electric oil pump, at least one bearing cavity of the engine and a coolant passage of the electric machine, th... | 09/14/2010 |
| 7762079 | Procedure for controlling the useful life of the gas turbines of a plant A method for controlling the useful life of gas turbines of a production plant includes a) creating a succession of gas generator groups of gas turbines to be subjected to maintenance, b) substituting a first gas generator group of gas turbines of the succession wit... | 07/27/2010 |
| 7762080 | Fuel metering pump calibration method A system and method for accurately supplying fuel flow to a gas turbine engine from a fuel metering pump regardless of variations in operating conditions of the fuel metering pump. The system determines an updated flow characteristic curve for an electrically powere... | 07/27/2010 |
