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| Number | Title | Issue Date |
| 8177483 | Active casing alignment control system and method A gas turbine with an active clearance control system includes a plurality of actuators circumferentially spaced between an inner shroud and an outer casing. The actuators are configured to eccentrically displace the shroud relative to the outer casing. A plurality ... | 05/15/2012 |
| 8002517 | Sensor Sensors (32, 52, 72) for determining a gap between a conductive member (34, 54, 74) such as a blade in a gas turbine engine and a seal segment (31, 51) are known to use capacitive variants in order to create an electrical signal indicative of th... | 08/23/2011 |
| 7985045 | Steam turbines, seals, and control methods therefor A steam turbine comprises a rotor with moving blades attached thereto; diaphragms which surround the rotor from an outer periphery side of the rotor; a casing which encloses the diaphragms and the rotor and has an upper half and a lower half clamped together through... | 07/26/2011 |
| 7758301 | Arrangement for detection of a shaft break in a gas turbine as well as gas turbine A gas turbine machine includes a second turbine (11), e.g. a low pressure turbine, positioned downstream from a first turbine (10), e.g. a medium pressure turbine. An arrangement for detecting a shaft break of a rotor shaft includes an operator element... | 07/20/2010 |
| 7722310 | System and method for measuring clearance between two objects A system for measuring clearance between a first object and a second object is provided. The system includes a sensor configuration to generate a first signal representative of a first sensed parameter and a second signal representative of a second sensed parameter.... | 05/25/2010 |
| 7625169 | Variable displacement turbine liner A turbine stage of a gas turbine engine is surrounded by a ring of liner segments. The liner segments can be moved radially in unison towards and away from the tips or fins of blades, by rotation of a connected unison ring, so as to avoid blade fin rub. Alternativel... | 12/01/2009 |
| 7581921 | Methods and apparatus for controlling rotary machines A control system for a rotary machine is provided. The rotary machine has at least one rotating member and at least one substantially stationary member positioned such that a clearance gap is defined between a portion of the rotating member and a portion of the subs... | 09/01/2009 |
| 7368827 | Electrical assembly for monitoring conditions in a combustion turbine operating environment An electrical assembly for use in various operating environments such as a casing of a combustion turbine 10 is provided. The assembly may include an electrical energy-harvesting device 51 disposed in a component within the casing of the turbine to con... | 05/06/2008 |
| 7293953 | Integrated turbine sealing air and active clearance control system and method An active clearance control system is provided that uses compressor extraction air to manipulate blade tip clearance in an industrial gas turbine and compressor. A stream of air is taken from a cooling and sealing air circuit and redirected to be used for active cle... | 11/13/2007 |
| 7283096 | Microstrip patch antenna for high temperature environments A patch antenna for operation within a high temperature environment. The patent antenna typically includes an antenna radiating element, a housing and a microwave transmission medium, such as a high temperature microwave cable. The antenna radiating element typicall... | 10/16/2007 |
| 7270890 | Wear monitoring system with embedded conductors Aspects of the invention relate to a system for monitoring the wear of a component. A conductor can be embedded in the component at a depth from a surface of the component. In one embodiment, the conductor can be operatively connected to a power source to form an el... | 09/18/2007 |
| 7246991 | Wind turbine blade deflection control system A wind turbine with a sensor that measures the out-of-plane deflection of the blades and a controller that uses the signal from the sensor to determine the risk of a tower strike. The controller takes any necessary action to prevent a tower strike when it determines... | 07/24/2007 |
| 7246994 | Spacing arrangement A spacing arrangement for a gas turbine engine 10. The spacing arrangement being arranged such that as a rotor blade 26 of a compressor 13 rotates, the rotor disc 28 will move outwards and forwards to maintain a substantially constant gap... | 07/24/2007 |
| 7220097 | Gas turbine apparatus with actuators to counteract deformations of housing A gas turbine apparatus includes a compressor and/or a turbine, having rotor blades mounted on a rotor that is rotatable relative to a stationary housing, with a clearance gap between the rotor blades and the housing. During operation, external forces tend to deform... | 05/22/2007 |
| 7215252 | Proximity sensor A proximity sensor includes an antenna having a resonant frequency selected to correspond to a resonant frequency associated with a selected dimension of an item of interest. In one example, the antenna is selected to have a resonant frequency corresponding to a res... | 05/08/2007 |
| 7207769 | Gas turbine Such a gas turbine is provided as can put into practical use a control technology which detects clearance between the tip of rotating blade and the inner circumference surface of ring segment surrounding them and adjusts the temperature, the pressure and the flow vo... | 04/24/2007 |
| 7201556 | Displacement casing A rotor system is provided whereby a rotary assembly such as a fan blade combination in a jet engine is brought into rub contact with a casing such that sensors detect vibration. The casing is then retreated in order to open the gap to a desired value for engine per... | 04/10/2007 |
| 7146139 | System and method for reducing SAR values A system and method for reducing the Specific Absorption Rate (SAR) of a mobile communication device employs a sensor assembly for sensing when the mobile communication device is in proximity to a body such as a human body, animal body, or the like. The average powe... | 12/05/2006 |
| 7140849 | Variable geometry turbine A variable geometry turbocharger comprises a turbine wheel (20) mounted within a turbine housing (23) on one end of a turbocharger shaft (22) for rotation about a turbocharger axis. The turbine housing (23) defines an annular turbine inle... | 11/28/2006 |
| 7140233 | Immersion lithography proximity sensor having a nozzle shroud with flow curtain The present invention is directed to an immersion lithography proximity sensor having a nozzle shroud with a flow curtain. The immersion lithography proximity sensor includes a shroud that affixes to the nozzle. A plenum is located inside the shroud that holds a shr... | 11/28/2006 |
| 7125223 | Method and apparatus for turbomachine active clearance control An apparatus for providing active clearance control between blade tips and seals in a turbomachine comprising: a first stator carrier segment, with stator seals centripetally disposed on it; a second stator carrier segment located along a same circumference as the f... | 10/24/2006 |
| 7124624 | High-resolution gas gauge proximity sensor An apparatus and method for precisely detecting very small distances between a measurement probe and a surface, and more particularly to a proximity sensor using a constant gas flow and sensing a mass flow rate within a pneumatic bridge to detect very small distance... | 10/24/2006 |
| 7053629 | System and method for detecting the proximity of a body A system and method for sensing the proximity of an electronic device, in particular, a radio frequency mobile communication device such as a mobile telephone, wireless modem equipped portable computer, or the like to a body employs an antenna capable of altering it... | 05/30/2006 |
| 7025562 | Device for cooling turbine disks A turbine disk cooling device fed with cooling air from an orifice through an annular support platform for a fixed vane of a low-pressure turbine is disposed between an upstream flange and a downstream flange of the support platform. The device includes upstream and... | 04/11/2006 |
| 7017390 | Proximity sensor nozzle shroud with flow curtain The present invention is directed to an apparatus for reducing the impact of cross winds on gas flow emitted from a nozzle. The apparatus includes a shroud that affixes to the nozzle. A plenum is located inside the shroud that holds a shroud gas, which is fed into t... | 03/28/2006 |
| 7010958 | High-resolution gas gauge proximity sensor An apparatus and method for precisely detecting very small distances between a measurement probe and a surface, and more particularly to a proximity sensor using a constant gas flow and sensing a mass flow rate within a pneumatic bridge to detect very small distance... | 03/14/2006 |
| 7010959 | Device and method for measuring mechanical path lengths by means of pneumatic pressure, in particular for sliding carbon contacts In a device and a method for measuring path lengths, particularly of brushes in sliding contacts, an air stream having a regularly fluctuating pressure is provided by a pump and conducted via an air supply line and a nozzle to an object to be measured. The object is... | 03/14/2006 |
| 7002259 | Method of controlling electrical rotating machines connected to a common shaft A controller for high torque, low RPM wind turbines and ocean current turbines. The turbine consists of a large, input power shaft-mounted, rotating bull-gear with stationary powertrains mounted around its periphery. The gear teeth on the bull-gear rotate past the t... | 02/21/2006 |
| 7002172 | Electronic safety system for the avoidance of an overspeed condition in the event of a shaft failure An electronic safety system for the detection of a shaft failure and for the interruption of the energy supply to the shaft includes at least one measuring light guide (13) which is firmly routed in the shaft longitudinal direction, co-rotates with the shaft ... | 02/21/2006 |
| 6978658 | Proximity sensor with self compensation for mechanism instability A retractable proximity sensor system with a self-compensating mechanism to reduce the impact of mechanical instability on the precision of a proximity sensor is disclosed. The retractable proximity sensor system includes a retractable proximity sensor and a proximi... | 12/27/2005 |
| 6949939 | Methods and apparatus for measuring rotating machine clearances A method of monitoring a clearance distance between a rotatable member and a stationary member within a rotary machine is provided. The method includes exciting a probe with a first modulation signal when the rotatable member is rotating at less than or equal to a p... | 09/27/2005 |
| 6833793 | Method of a continuous determination of an instantaneous position of an impeller blade tip in a rotor turbine machine The invention relates to a method of a continuous determination of an instantaneous position of an impeller blade tip (5′) in a rotor turbine machine, particularly in a turbine impeller (6) in a turbojet engine during its operation in a real conditio... | 12/21/2004 |
| 6749393 | Wind power plant A wind power plant for producing electrical energy on a large scale, comprising a base, a housing, rotatable on said base around vertical axis. A wind tail, attached to the housing, rotate the housing toward direction of the wind, utilizing the power of the wind, an... | 06/15/2004 |
| 6719525 | Submerged motor vane wheel rotation direction control structure A submerged motor vane wheel rotation direction control structure includes a blade pivoted to a locating block inside of the water guide chamber of a submerged motor, a vane wheel, the vane wheel having sloping teeth radially extended from the motor shaft of the sub... | 04/13/2004 |
| 6692222 | Micro gas turbine engine with active tip clearance control In a micro gas turbine engine, a capacitive sensor is used for measuring a tip clearance of a radial compressor section thereof, and an actuator is used for axially displacing a rotor shaft in response to an output from the capacitive sensor. Because the ... | 02/17/2004 |
| 6607349 | Gas turbine engine broken shaft detection system The broken shaft detection system and method uses a detector assembly mounted downstream of a power turbine wheel of a gas turbine engine to detect rearward axial motion of the wheel and thereby a broken shaft event. The detector assembly has a plunger po... | 08/19/2003 |
| 6607350 | Gas turbine engine system Tip clearance apparatus for a gas turbine engine comprises a shroud ring having curved portions so as to allow eccentric offset and hence asymmetric movement of the shroud. The shroud ring is mounted within a guide also having corresponding curved portion... | 08/19/2003 |
| 6474935 | Optical stall precursor sensor apparatus and method for application on axial flow compressors A stall precursor detector system for an axial flow compressor having at least one optical sensor to detect the deflection of a rotating airfoil of the compressor, means for comparing the deflection with a predetermined value, the predetermined value bein... | 11/05/2002 |
| 6431823 | Centrifugal pump with variable capacity and pressure A centrifugal pump includes a casing having an outlet chamber and an impeller rotatable in the casing. A set of controlling sideplates are installed in the outlet chamber. The controlling sideplates are movable along the axis of the impeller, positioned s... | 08/13/2002 |
| 6401460 | Active control system for gas turbine blade tip clearance A method of actively controlling the clearance between the rotating components and the stationary components of a combustion gas turbine engine includes employing an active control system that controls the temperature of bleed air that is delivered to the... | 06/11/2002 |
