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| Number | Title | Issue Date |
| 8186933 | Systems, methods, and apparatus for passive purge flow control in a turbine Systems, methods and apparatus for passive purge flow control in a turbine are provided. Various embodiments of the invention include providing a path for air to flow to a bore of a rotor with a plurality of stacked wheels. The air flow path includes at least one in... | 05/29/2012 |
| 8182199 | Turbine shroud cooling system A method of cooling a shroud ring in a turbine section of gas turbine engine includes identifying a series of alternating high temperature regions and lower temperature regions of a circumferential temperature distribution about the inner surface of the shroud ring,... | 05/22/2012 |
| 8177475 | Contaminant-deflector labyrinth seal and method of operation A seal assembly for deflecting contaminated fluid flowing through the seal assembly from an upstream space to a downstream space includes an annular housing, at least one vent hole peripherally disposed on the annular housing, a first set of seals disposed within th... | 05/15/2012 |
| 8177476 | Method and apparatus for clearance control A system, in certain embodiments, includes a magnetic actuator configured to adjust a radial clearance between a housing and rotary blades via translational movement along a rotational axis. The system includes a controller configured to engage the magnetic actuator... | 05/15/2012 |
| 8177474 | System and method for turbine engine clearance control with rub detection A method of detecting rubs during operation of a turbomachine comprising at least one rotating object having a tip and a shelf is provided. The method includes generating signals representative of a sensed parameter and processing the signals to generate height vers... | 05/15/2012 |
| 8167531 | Method and apparatus for supporting rotor assemblies during unbalances A method and apparatus for reducing dynamic loading of a gas turbine engine is provided. The gas turbine engine includes a rotor shaft assembly including a rotor shaft, a bearing assembly, a mounting race, and a support frame, the mounting race including a spherical... | 05/01/2012 |
| 8162588 | Rotor and nozzle assembly for a radial turbine and method of operation A rotor for a radial flow turbine has an impulse chamber (51) having an inlet defined in a circumferential surface of the rotor and a reaction chamber (62) having an outlet defined in the circumferential surface of the rotor. The impulse chamber is in ... | 04/24/2012 |
| 8152436 | Blade under platform pocket cooling Inlets are provided at a front end of inter-blade cavities for allowing coolant to flow therein to cool down the undersurface of the blade platforms as well as the rim of the disc of a rotor assembly. ... | 04/10/2012 |
| 8152439 | Method and apparatus for starting supersonic compressors A supersonic gas compressor. The compressor includes aerodynamic duct(s) situated on a rotor journaled in a casing. The aerodynamic duct(s) generate a plurality of oblique shock waves for efficiently compressing a gas at supersonic conditions. The convergent inlet i... | 04/10/2012 |
| 8152437 | Interface member for a power plant A power plant includes a first turbine having a plurality of turbine stages. The first turbine discharges a first fluid flow. A second turbine is operatively coupled to the first turbine. The second turbine receives the first fluid flow from the first turbine and a ... | 04/10/2012 |
| 8152438 | Installing a shaft in a bearing comprising a self-releasing nut A gas turbine engine including a shaft, a bearing, a coupling supported by the bearing is disclosed. The shaft is engaged by an end trunnion inside the coupling and fixed to the coupling by a cylindrical nut. The engine is characterized in that the nut is in axial a... | 04/10/2012 |
| 8133003 | Magnetic adjustment of turbomachinery components Disclosed is a seal for a turbomachine including at least one fixed component located proximate to a rotating component of the turbomachine defining a clearance therebetween. At least one magnet is located at the at least one fixed component. The at least one magnet... | 03/13/2012 |
| 8118536 | Method and system for operating a wind turbine A lubrication system for a wind turbine having a control system, the lubrication system including a sump configured to collect a lubrication fluid, and at least one heating unit configured to heat the lubrication fluid based on at least one forecasted condition.... | 02/21/2012 |
| 8113764 | Steam turbine and a method of determining leakage within a steam turbine A steam turbine includes a shaft operatively connecting a first turbine section and a second turbine section. A packing assembly is positioned about the shaft. A first conduit is fluidly connected to the packing assembly. The first conduit is configured to introduce... | 02/14/2012 |
| 8100627 | Pump wet end replacement method and impeller fixing mechanism An impeller fixing mechanism is provided in a centrifugal pump for immobilizing the impeller, relative to the pump shaft and drive shaft of the pump, while effecting repairs to the pump, thereby eliminating much of the labor-intensive need for realigning the pump sh... | 01/24/2012 |
| 8096748 | Apparatus and method for double flow turbine first stage cooling A method of cooling a double flow steam turbine includes supplying steam flow to each nozzle of the sections of the turbine; reversing a portion of each steam flow to provide a reverse steam flow from an aft side to a forward side of each section. Each reverse steam... | 01/17/2012 |
| 8096747 | Apparatus and related methods for turbine cooling An apparatus and a method for cooling and/or sealing a gas turbine by selectively boosting the pressure of air extracted at a lower extraction stage is provided. The pressure of the extracted air is boosted by an external compressor before it becomes available for c... | 01/17/2012 |
| 8096746 | Radial loading element for turbine vane A vane assembly for a gas turbine engine comprising a number of radial loading elements disposed between lugs of the vane ring and the vane support, such as to generate a radial load force against the vane ring. The radial load force prevents unwanted relative movem... | 01/17/2012 |
| 8092145 | Particle separator and separating method for gas turbine engine A system and method for particle separation in a gas turbine engine centrifugal impeller bleed air system using a tangential velocity component of the compressor bleed air to centrifuge the particles radially outwardly and convey the particles circumferentially, awa... | 01/10/2012 |
| 8092146 | Active tip clearance control arrangement for gas turbine engine An active tip clearance control (ATCC) apparatus of an aircraft gas turbine engine is situated within a pressurized core case of the engine. First and second portions of bypass air flow passing through the respective compressed core compartment and the ATCC apparatu... | 01/10/2012 |
| 8087870 | Controlling operation of a compressor to avoid surge A compressor or fan is controlled to avoid stall, surge or flutter. The control system includes a look-up table from which is retrieved a margin-adjusted limiting value of a control parameter of the compressor, using inputs representing inlet guide vane angle (IGV),... | 01/03/2012 |
| 8087872 | Steam seal system The present application provides a variable steam seal system for use with a steam turbine. The variable steam seal system may include a seal steam header, a first pressure section, a first pressure seal positioned about the first pressure section, and a flow path t... | 01/03/2012 |
| 8087871 | Turbomachine compressor wheel member A turbomachine includes a rotor assembly including a wheel member. The wheel member includes a first portion that extends to a second portion through an intermediate portion. The intermediate portion partially defines a first wheel space and a second wheel space. Th... | 01/03/2012 |
| 8075245 | Removal of moisture from process gas Embodiments of the disclosure may provide an exemplary method for operating a compressor system, wherein the method may include cooling a process gas containing water vapor to a first temperature. The water vapor may form a condensate at the first temperature, and c... | 12/13/2011 |
| 8061962 | Method of optimizing a ducted anti-torque rotor of a rotorcraft, in particular a helicopter, to minimize acoustic annoyance, and a ducted anti-torque rotor obtained thereby The present invention relates to a method of minimizing the noise emitted by a ducted rail rotor anti-torque device at a frequency FE and perceived at a frequency FP, in which method the diameter D, the number of blades b, and the tangential speed U of the rotor are... | 11/22/2011 |
| 8061963 | Guided wind kite for increased wind turbine power output A wind turbine system includes a kite positioned upstream to a turbine to direct wind to the turbine, thereby increasing revolutions per minutes and power output of the turbine. ... | 11/22/2011 |
| 8061961 | Fluid expansion device and method with noise attenuation A device or system through which fluid is adapted to flow, such as, for example, a fluid-carrying conduit, flow control valve, or fluid expansion device including, for example, a steam turbine or fluid expander, according to which acoustic energy is generated by, or... | 11/22/2011 |
| 8057158 | Oscillation damping of a wind turbine The invention relates to a wind turbine and a method for operating the wind turbine planted in the floor of a body of water. The wind turbine includes a support structure and a rotor, which is arranged on the support structure. The rotor has a rotor blade. The wind ... | 11/15/2011 |
| 8057157 | System for delivering air from a multi-stage compressor to a turbine portion of a gas turbine engine A system for providing air from a multi-stage to a turbine includes a turbine having a high pressure input port and a low pressure input port. The system also includes a compressor having at least one high pressure extraction air output and at least one low pressure... | 11/15/2011 |
| 8047764 | Blade containment structure The fan duct of a ducted fan gas turbine engine has a fan case lined with a honeycomb structure that acts to absorb the energy of a separated part of a blade. A layer of composite material lining honeycomb structure delaminates/breaks when a separated blade part pas... | 11/01/2011 |
| 8047763 | Asymmetrical gas turbine cooling port locations A method is disclosed for improving a turbine's thermal response during transient and steady state operating conditions in which the flow of cooling fluid in the turbine's casing is caused to be asymmetrical relative to the horizontal and vertical symmetry planes of... | 11/01/2011 |
| 8043044 | Load pin for compressor square base stator and method of use A load pin has an end portion, and a vane has a base with a cutout in the base, wherein the end portion of the load pin engages a wall portion of the cutout in the base of the vane, thereby inhibiting any movement of the vane in a particular direction. ... | 10/25/2011 |
| 8038382 | Methods and systems for controlling gas turbine clearance Systems and methods for controlling the clearance in a gas turbine are provided. A temperature of a shaft of the gas turbine may be determined, and a desired temperature of an inner turbine shell of the turbine may be determined based upon the temperature of the sha... | 10/18/2011 |
| 8033782 | Method to prevent brinelling wear of slot and pin assembly A method to prevent brinelling wear of a slot and pin assembly of an adjustable inlet guide vane mechanism includes: providing a compressor having the adjustable inlet guide vane mechanism including a control ring with a plurality of tapered slots positioned around ... | 10/11/2011 |
| 8029230 | Turbine exhaust system and method for modifying the same A turbine exhaust system includes an exhaust hood inner casing that involves the turbine rotor; an exhaust hood outer casing that forms an exhaust hood, together with the exhaust hood inner casing; a flow guide that forms an annular diffuser flow path; and exhaust h... | 10/04/2011 |
| 8025476 | System and methods for controlling a wind turbine A method for controlling operation of a wind turbine is described. The wind turbine includes a rotor having a plurality of rotor blades and an upwind wind condition measurement device. The method includes measuring a wind condition upwind from the rotor using the up... | 09/27/2011 |
| 8002515 | Flow inhibitor of turbomachine shroud Disclosed is a shroud for a turbomachine including at least one support structure and at least one inner shroud disposed at a gas path of a turbomachine. The at least one inner shroud and the at least one support structure have at least one gap therebetween. The at ... | 08/23/2011 |
| 7976266 | Power system A power system includes a gas turbine engine. The gas turbine engine may include a first portion, a second portion, and a longitudinal axis. The power system may also include a first moveable support engaged to the first portion of the gas turbine engine. The first ... | 07/12/2011 |
| 7972105 | Turbine anti-rotating stall schedule A method of starting up a turbine with a compressor have an inlet guide vane, a number of bleed valves, and a number of blades so as to limit the duration in a rotating stall window. The method may include starting rotation of the blades, increasing the speed of the... | 07/05/2011 |
| 7967550 | Wind turbine with a refrigeration system and a method of providing cooling of a heat generating component in a nacelle for a wind turbine The invention provides a wind turbine wind turbine with two vessels, each being interchangeably in thermal communication with a heating medium which transfers heat from a heat generating structure to the vessel, and with a cooling medium which transfers heat from th... | 06/28/2011 |
