| Patent application number | Description | Published |
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| 20090120088 | SYSTEM FOR REDUCING THE SULFUR OXIDES EMISSIONS GENERATED BY A TURBOMACHINE - A portion of the exhaust generated by a turbomachine is recirculated through an inlet portion by an exhaust gas recirculation system. The system reduces the level of Sulfur Oxides and other constituents within the exhaust before the exhaust is recirculated. The system may utilize sea water, fresh water, or combinations thereof; as part of a scrubbing process to reduce the Sulfur Oxides and other constituents. | 05-14-2009 |
| 20090193787 | Apparatus and Method for Start-Up of a Power Plant - A power plant is provided which includes a gas turbine having a compressor for producing compressed air and a combustor for combusting the compressed air with a combustible fuel to produce a heated combustion gas. The power plant also includes a heat recovery steam generator for generating a flow of steam from an exhaust of the gas turbine and a steam turbine for expanding the flow of steam from the heat recovery steam generator. The steam turbine has a rotor having a rotor bore disposed axially therein. The power plant also includes a conduit for directing at least a portion of the compressed air or at least a portion of the heated combustion gas from the gas turbine to the rotor bore of the steam turbine, wherein the compressed air or the heated combustion gas may warm the rotor bore of the steam turbine. | 08-06-2009 |
| 20100329835 | AIRFOIL WITH HYBRID DRILLED AND CUTBACK TRAILING EDGE - An apparatus for a gas turbine engine includes an airfoil, a metering opening for metering a cooling fluid, a cutback slot configured to deliver the cooling fluid from the metering opening, and a cooling hole. The airfoil defines a trailing edge, opposite first and second faces, and a mean camber line. The cutback slot is defined along the first face of the airfoil adjacent to the trailing edge and offset from the mean camber line of the airfoil. The cooling hole has an outlet that is located at the trailing edge and substantially aligned with the mean camber line of the airfoil. The cooling hole delivers a portion of the cooling fluid from the metering opening. | 12-30-2010 |
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| 20090142194 | METHOD AND SYSTEMS FOR MEASURING BLADE DEFORMATION IN TURBINES - A tip shrouded turbine blade that may include a target pad disposed on an outer radial surface of the tip shroud, the target pad including a raised surface that protrudes radially outward from the outer face of the tip shroud. The target pad may be substantially cylindrical in shape such that an outer radial face of the target pad is substantially circular in shape. The size of the surface area of the outer radial face of the target pad may be configured to be substantially the same size as an area of measurement for a conventional proximity sensor. | 06-04-2009 |
| 20090150056 | METHOD AND SYSTEM FOR CONTROLLING A FLOWRATE OF A RECIRCULATED EXHAUST GAS - A method and system for controlling an exhaust gas recirculation (EGR) system is provided. The EGR system recirculates a portion of an exhaust through an inlet portion of the turbomachine. The EGR system reduces the level of harmful constituents within the exhaust before the recirculation occurs. | 06-11-2009 |
| 20090158734 | METHOD FOR ADJUSTING THE OPERATION OF A TURBOMACHINE RECEIVING A RECIRCULATED EXHAUST GAS - A method for adjusting the operation of a turbomachine integrated with an exhaust gas recirculation (EGR) system is provided. The method may utilize the composition of an inlet fluid entering the turbomachine. The method may also utilize a variety of turbomachine operating data. | 06-25-2009 |
| 20100101545 | INLET SYSTEM FOR AN EGR SYSTEM - An embodiment of the present invention takes the form of a system that may recirculate a portion of the exhaust of at least one turbomachine where it may be mixed with the inlet air and re-enter the turbomachine without affecting reliability and availability of the unit. | 04-29-2010 |
| 20100287943 | METHODS AND SYSTEMS FOR INDUCING COMBUSTION DYNAMICS - Methods and systems are provided for inducing combustion dynamics within turbine engines to remove combustion deposits within the turbine engine during operation of the turbine engine. | 11-18-2010 |
| 20110131981 | INLET SYSTEM FOR AN EGR SYSTEM - An embodiment of the present invention takes the form of a system that may recirculate a portion of the exhaust of at least one turbomachine where it may be mixed with the inlet air and re-enter the turbomachine without affecting reliability and availability of the unit. | 06-09-2011 |
| 20110131982 | INLET SYSTEM FOR AN EGR SYSTEM - An embodiment of the present invention takes the form of a system that may recirculate a portion of the exhaust of at least one turbomachine where it may be mixed with the inlet air and re-enter the turbomachine without affecting reliability and availability of the unit. | 06-09-2011 |
| 20110138767 | INLET SYSTEM FOR AN EGR SYSTEM - An embodiment of the present invention takes the form of a system that may recirculate a portion of the exhaust of at least one turbomachine where it may be mixed with the inlet air and re-enter the turbomachine without affecting reliability and availability of the unit. | 06-16-2011 |
| 20110138768 | INLET SYSTEM FOR AN EGR SYSTEM - An embodiment of the present invention takes the form of a system that may recirculate a portion of the exhaust of at least one turbomachine where it may be mixed with the inlet air and re-enter the turbomachine without affecting reliability and availability of the unit. | 06-16-2011 |
| Patent application number | Description | Published |
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| 20090284013 | Dry 3-way catalytic reduction of gas turbine NOx - A power generation system capable of eliminating NO, components in the exhaust gas by using a 3-way catalyst, comprising a gas compressor to increase the pressure of ambient air fed to the system; a combustor capable of oxidizing a mixture of fuel and compressed air to generate an expanded, high temperature exhaust gas; a gas turbine engine that uses the force of the high temperature gas; an exhaust gas recycle (EGR) stream back to the combustor; a 3-way catalytic reactor downstream of the gas turbine engine outlet which treats the exhaust gas stream to remove substantially all of the NO | 11-19-2009 |
| 20100287944 | AVAILABILITY IMPROVEMENTS TO HEAVY FUEL FIRED GAS TURBINES - Maintenance operations for a hot gas path of a gas turbine require shutdown and cooled down conditions. When a gas turbine is shut down, thermal gradients in the rotor cause stresses that limit the life of the major components. As the cooling rate is increased to reduce the time, the stresses are increased, reducing rotor life. A method and equipment are provided to reduce the overall cycle time for the maintenance, yet mitigate the life penalties, thereby providing greater power production while maintaining (or potentially extending) rotor life. The method includes small hold times during the turbine shutdown and startup and slower turbine ramp rates during cooldown and startup, which more than offset thermal stresses from a forced cooldown, considerably shortening the overall operation. | 11-18-2010 |
| 20100287948 | UNLOADED SPEED CONTROL FOR AVAILABILITY IMPROVEMENTS TO HEAVY FUEL FIRED GAS TURBINES - Control of gas turbine speed and acceleration during unloaded rotation may limit stresses on components and facilitate timely operational performance. Operation of a torque converter driving a gas turbine shaft from a starter motor provides control over acceleration and speed of the gas turbine shaft. Hydraulic coupling between the input and output of the torque converter is adjusted by draining and refilling the working fluid in a body of the torque converter to control acceleration and speed of the rotor shaft during a first speed range. Vane positioning within the torque converter may be alternated between discrete speed settings to control acceleration and speed of the rotor shaft during a second speed range. A turbine control system with an acceleration schedule may provide control signals for these functions. | 11-18-2010 |
