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| Number | Title | Issue Date |
| 6895757 | Sealing assembly for the aft end of a ceramic matrix composite liner in a gas turbine engine combustor An assembly for providing a seal at an aft end of a combustor liner for a gas turbine engine including a longitudinal centerline axis extending therethrough. The sealing assembly includes a substantially annular first sealing member positioned between an aft portion... | 05/24/2005 |
| 6895741 | Differential geared turbine engine with torque modulation capability A method and apparatus for controllable distribution of power from a turbine of a gas turbine engine between two rotatable loads of the gas turbine engine, comprises transferring a shaft power of the turbine to the respective rotatable loads using differential geari... | 05/24/2005 |
| 6895325 | Overspeed control system for gas turbine electric powerplant A turbine overspeed control system for a gas turbine electrical powerplant. The powerplant may employ an aeroderivative gas turbine engine for producing electrical power. The overspeed control system preferably comprises a compression relief system and an air direct... | 05/17/2005 |
| 6892542 | Gas compression system and method for microturbine application The present invention may include a microturbine power generating system which may include a combustor for combusting a gaseous fuel to provide a supply of gaseous heat energy, a radial gas compressor for delivering said gaseous fuel to said combustor, and an electr... | 05/17/2005 |
| 6886343 | Methods and apparatus for controlling engine clearance closures A method enables a gas turbine engine to be provided. The method comprises providing a ring support that includes a first radial flange, a second radial flange, and a plurality of beams that extend therebetween, within the engine, wherein at least one of the beams i... | 05/03/2005 |
| 6886344 | Method for the operation of a power plant In a method for the operation of a power plant with a closed or quasi-closed cycle, the power plant substantially comprises at least one compressor unit (1) or a pump, at least one combustion chamber (2), at least one turbine (3) and at least on... | 05/03/2005 |
| 6880343 | Supercharged gas turbine with improved control A gas-turbine supercharging system with improved control. A gas-turbine supercharger that preferably comprises a variable-pitch axial flow fan and a logger supplies, cooled, pressurized air to a gas-turbine power plant. The gas-power plant is preferably a part of co... | 04/19/2005 |
| 6880344 | Combined rankine and vapor compression cycles An organic rankine cycle system is combined with a vapor compression cycle system with the turbine generator of the organic rankine cycle generating the power necessary to operate the motor of the refrigerant compressor. The vapor compression cycle is applied with i... | 04/19/2005 |
| 6877319 | Method of operating a combustion plant and a combustion plant The invention concerns a method of operating a combustion plant comprising at least a first gas turbine (26), a second turbine (34, 50) and a membrane reactor device (16) which comprises a membrane filter device (18) for separating oxygen... | 04/12/2005 |
| 6874322 | Method for operating a gas and steam turbine system and a corresponding system In a method of operating a gas turbine and steam turbine installation with a gas turbine which can be operated with both gas and oil, a partial flow of heated feed water is injected into the cold condensate when a change is made from gas operation to oil operation. ... | 04/05/2005 |
| 6871501 | Method and apparatus to decrease gas turbine engine combustor emissions A method enables a gas turbine engine including a combustor to be operated. The combustor includes a mixer assembly including an air swirler, a premixer, a dome plate, and a heat shield. The method comprises discharging fluids from the air swirler into the premixer,... | 03/29/2005 |
| 6871502 | Optimized power generation system comprising an oxygen-fired combustor integrated with an air separation unit A novel power generation system, more specifically an integrated power generation and air separation system and an integrated power generation and air separation process is provided. A key component of the system and process is an oxygen-fired combustor designed for... | 03/29/2005 |
| 6868675 | Apparatus and method for controlling combustor liner carbon formation An apparatus and method for controlling combustor liner carbon formation is provided. The apparatus includes a dome subassembly that is removeably affixed to a modular outer panel subassembly and a modular inner panel subassembly. Each panel subassembly includes pan... | 03/22/2005 |
| 6870279 | Method and system for control of turbogenerator power and temperature A power controller controls the turbine of a turbine powered generating system regardless of the load on said system to maximize the efficiency of the turbine and maintains the turbine at a substantially constant temperature during a system load change by using an e... | 03/22/2005 |
| 6851265 | Steam cooling control for a combined cycle power plant A component cooling steam flow control scheme for a combined cycle power plant (12). Steam pressure in the steam drum (40) of a waste heat recovery steam generator (36) is controlled by selectively positioning a steam bypass valve (54). T... | 02/08/2005 |
| 6851264 | Self-aspirating high-area-ratio inter-turbine duct assembly for use in a gas turbine engine In various embodiments, the present invention provides a means for improving gas turbine engine performance by applying fluid flow control to the inter-turbine duct joining a high-pressure turbine spool and an associated low-pressure turbine spool, allowing the low-... | 02/08/2005 |
| 6851266 | Method for maintaining a combined-cycle power station at readiness In a method for maintaining a combined-cycle power station at readiness, an supplemental firing (44) with a fresh air supply fan (46) and, preferably, the feed and supply pumps (21, 23, 31, 38) are operated continuously or intermittently when th... | 02/08/2005 |
| 6843061 | Gas turbine with flexible combustion sensor connection A gas turbine engine (40) having an active combustion control system (54) including a sensor element (44) positioned proximate the combustion chamber (46) as part of a sensor assembly (84) including a spring-action bellows (74 | 01/18/2005 |
| 6843060 | Fault management system for gas turbine engines Disclosed herein is a “real time” Time Limited Dispatch (TLD) fault management system and method for evaluating the operational suitability of an engine's electronic control system. The TLD system disclosed herein uses a software algorithm to compute or predict ... | 01/18/2005 |
| 6840048 | Dynamically uncoupled can combustor Respective combustion gas streams are generated in a can combustor. The streams are channeled downstream into an annular turbine nozzle. And, dynamic interaction of circumferentially adjacent combustion gas streams is suppressed axially between the cans and the nozz... | 01/11/2005 |
| 6829898 | Gas turbine combined plant and method of operating the same A piping guides exhaust gas of a gas turbine to a heat recovery steam generator (HRSG). The piping is provided at an outlet of the exhaust gas and is branched into two portions at a branch portion upstream of the HRSG, with one portion being connected to a high-pres... | 12/14/2004 |
| 6826913 | Airflow modulation technique for low emissions combustors The present invention is directed to a fluidic system and method for controlling the airflow to a lean premix combustor. The system and method as disclosed allow for reduced power, which results in reduced emissions, while at the same time providing excellent perfor... | 12/07/2004 |
| 6823674 | Method for operating a gas and stream turbine installation and corresponding installation In a method operating a gas and steam turbine installation having a gas turbine which can be operated with both gas and oil, during a change of operation from gas to oil, a partial-flow mixture formed from a first partial flow of heated feedwater and from a second p... | 11/30/2004 |
| 6820427 | Method and apparatus for operating a turbine engine A method for operating a turbine is provided. The method includes supplying working fluid to a first flow path input and routing the fluid through a heating unit coupled in flow communication to the flow path between first flow path input and the turbine. The method... | 11/23/2004 |
| 6820428 | Supercritical combined cycle for generating electric power A combined cycle process for generating electric power wherein the working fluid fed to the steam turbine train is water above its critical pressure and temperature. Preferred embodiments include: reheating steam side streams extracted from the steam turbine ... | 11/23/2004 |
| 6817185 | Engine with combustion and expansion of the combustion gases within the combustor An engine comprising an isothermal air compressor (1) into which liquid is sprayed as the air is compressed. A combustion chamber (4) receives and expands the compressed air from which the liquid has been removed, to generate power. A precompressor ( | 11/16/2004 |
| 6804964 | Water recovery from combustion turbine exhaust A combustion turbine power plant (10) incorporating a water recovery apparatus (34). A sulfur stripper portion of the water recovery apparatus uses water (56) to remove suffer from the exhaust (20) of the combustion turbine (12) an... | 10/19/2004 |
| 6804612 | Methods and systems for performing integrated analyzes, such as integrated analyzes for gas turbine power plants Automated systems for performing integrated analyses. In one embodiment, an integrated analysis system can be used to comprehensively evaluate the effects of changes in hardware configuration or operating conditions on gas turbine power plant performance and economi... | 10/12/2004 |
| 6792757 | Gas turbine combustor heat shield impingement cooling baffle A heat shield for a combustor dome includes U-shaped baffles on the outer diameter area of the upstream surface of the heat shield. The baffles are clocked with respect to the impingement openings in the combustor dome. The baffles increase cooling of the heat shiel... | 09/21/2004 |
| 6793455 | Method and apparatus for active control of surge in compressors Methods for avoiding surge in a compressor are provided. A representative method includes detecting precursor information of the compressor and controlling the compressor based on the precursor information to avoid a surge condition in the compressor. The control sc... | 09/21/2004 |
| 6792758 | Variable exhaust struts shields A gas turbine engine having an exhaust casing that includes a plurality of fairings that shield struts that are affixed to and extend between concentric rings. Each fairing has a moveable tail section that is adjusted during turbine operation to change the angle of ... | 09/21/2004 |
| 6775985 | Support assembly for a gas turbine engine combustor A support assembly for a gas turbine engine combustor including an inner liner and an inner casing spaced therefrom, wherein a longitudinal centerline axis extends through the gas turbine engine. The support assembly includes an annular inner support cone located ad... | 08/17/2004 |
| 6769258 | System for staged chilling of inlet air for gas turbines A method for cooling inlet air to a gas turbine is provided. For example, a method is described including passing inlet air through a cooling coil that includes an opening for receiving the inlet air and that is operably connected to a gas turbine power plant. The g... | 08/03/2004 |
| 6758045 | Methods and apparatus for operating gas turbine engines A method enables a gas turbine engine multi-domed combustor including an outer liner and an inner liner that define a combustion chamber therebetween to be assembled. The method comprises coupling a first dome including a heat shield that includes an annular endbody... | 07/06/2004 |
| 6745571 | Method of combustor cycle airflow adjustment A method of combustor cycle air flow adjustment for a gas turbine engine according to the present invention solves the problem of a higher flame temperature in the combustor, thereby affecting the emission levels when a heat-recuperated air flow cycle is used to inc... | 06/08/2004 |
| 6742339 | Methods and apparatus for exhausting gases from gas turbine engines A method enables a gas turbine engine positioned within a module to be operated. The engine includes an inlet and an exhaust, and the module includes an inlet area, an exhaust area, and an engine area extending therebetween and housing the engine. The exhaust area i... | 06/01/2004 |
| 6732529 | Off loading clutch for gas turbine engine starting A method for gas turbine engine off-load starting includes using a starter connected to a rotor of a gas turbine engine to start the gas turbine engine while terminating or reducing torque transmission from the starter to accessory devices until a gas turbine engine... | 05/11/2004 |
| 6715294 | Combined open cycle system for thermal energy conversion A dual-fluid heat engine having a gas turbine and an open cycle steam turbine. The gas turbine has a compressor for compressing a first working fluid, the compressor having a compressor outlet. The gas turbine has a combustion chamber in fluid communication with the... | 04/06/2004 |
| 6711902 | Integrated cycle power system and method An integrated-cycle power system and method, comprising thermal transfer assembly, recuperating heat exchanger assembly, heat integrator, thermal conduit assembly and gas turbine. The thermal transfer assembly receives heat emitted from the effluent of a heat source... | 03/30/2004 |
| 6694742 | Gas turbine system operation based on estimated stress Critical stress in a gas turbine can be estimated using one or more readily measurable temperatures in the gas turbine. First and second critical temperatures can be estimated based on the at least one measurable temperature using heat conduction and conv... | 02/24/2004 |
