General Electric Company

Other

Momentive Performance Materials Gmbh

University of Cincinnati

Samhita Dasgupta

Emad Andarawis Andarawis

Mahadevan Balasubramaniam

Matthew Christian Nielsen

David Mulford Shaddock

William Lee Herron

Robert John Filkins

David So Keung Chan

Min-Yi Shih

John Harry Down

William P Kornrumpf

Wayne Charles Hasz

Glenn Scott Claydon

David Richard Esler

Zhiyuan Ren

Minesh Ashok Shah

David Walter Parry

Christopher James Kapusta

James Anthony Ruud

Glenn A Forman

Steven Francis LeBoeuf

Thomas Bert Gorczyca

Kanakasabapathi Subramanian

Joseph Alfred Iannotti

Bruno Hans Haider

Todd Alan Anderson

Vinayak Tilak

Jeffrey Bernard Fortin

Steven Alfred Tysoe

Todd Ryan Tolliver

Shobhana Mani

Cheryl Lynn Herron, Legal Representative

David So Chan

Robert J Wojnarowski

Mark Philip D'Evelyn

Harry Kirk Mathews, Jr

Mehmet Arik

Venkat Subramaniam Venkataramani

James Wilson Rose

Richard J Saia

Stephen Daley Arthur

Sridhar Adibhatla

Glen Peter Koste

Guanghua Wang

Eladio Clemente Delgado

James Scott Vartuli

William Edward Burdick, Jr

Richard Louis Frey

Ernest Wayne Balch

Nirm Velumylum Nirmalan

Hejie Li

Robert Joseph Albers

Scott Douglas Waun

Chayan Mitra

Charles Adrian Becker

Kelvin Ma

Edward Randall Furlong

Anquan Wang

Philip Paul Beauchamp

Charles John Kryzak

Kiyoung Chung

Eric Michael Breitung

R Sheldon Carpenter

Rafael Jose Ruiz

Brent Jerome Brunell

Charles Rickards

Jie Jiang

David William Vernooy

Abasifreke Udo Ebong

Brian Scott Leininger

Joseph T Boyd

Ibrahim Issoufou Kouada

Howard E Jackson

Weiguo Chen

Hans Max Ortlepp

Stacey Joy Goodwin

Scott Gayton Liter

Don C Abeysinghe

Simon Shlomo Lis

Rodrick Gordon Brown

Stephen Thomas Walls

Kurtis Gifford McKenney

Glenn Alan Forman

A system and method for remotely monitoring the operation of a turbine includes a remote device having a power module connected to a sensor and a transmitter. The remote device is powered by the power module and connected to a system such that the remote device is self-powered. The remote device wirelessly transmits information acquired by the sensor out of the turbine.

Wireless monitoring system

In one embodiment, a gas turbine engine control system includes an engine controller configured to control multiple parameters associated with operation of a gas turbine engine system. The gas turbine engine control system also includes multiple remote interface units communicatively coupled to the engine controller. The remote interface unit is configured to receive an input signal from the engine controller indicative of respective target values of at least one parameter, and the remote interface unit is configured to provide closed-loop control of the at least one parameter based on the input signal and feedback signals indicative of respective measured values of the at least one parameter.

Distributed gas turbine engine control system with remote interface units

A thermal measurement system that includes a light collection device and a detection system in communication with the device. The detection system includes two detection subsystems, wherein one subsystem is configured to detect light from a surface of an object, while the other subsystem is configured to detect light from the surface and a gas. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.

Multiwavelength thermometer

A clearance sensing system for a rotating machine includes a plurality of sensor probes disposed within a stationary shroud of the rotating machine. Each of the plurality of sensor probes is adapted to measure a parameter indicative of an axial and a radial displacement of a rotating component within the shroud and to produce a signal that corresponds to the parameter. In certain embodiments, this parameter may include a capacitance between the rotating component and the sensor probe. The clearance sensing system further includes a circuit that receives the signal from each of the plurality of sensor probes and determines (a) the axial displacement of the rotating component within the shroud and (b) a radial displacement of the rotating component relative to the shroud.

Displacement sensor system and method of operation

A circuit includes a flexible circuit having an optical waveguide embedded therein, a first device attached to the flexible circuit and configured to convert a first electrical signal to an optical signal, the first device positioned to emit the optical signal to an input end of the optical waveguide, and a second device attached to the flexible circuit and configured to convert the optical signal into a second electrical signal, the second device positioned to receive the optical signal from an output end of the optical waveguide.

Optical link circuit and method of making same

A sensor system for measuring a clearance parameter between a stationary component and a rotating component of a rotating machine is provided. The system includes a clearance sensor to output a clearance measurement signal. A sensor memory is attached to the sensor for storing a first sensor information. A second sensor information is stored in a electronics interface memory. The first and the second sensor information are read and the clearance sensor is matched with a respective plurality of calibration data by an electronic interface based on the first and the second sensor information.

Automated sensor specific calibration through sensor parameter download

Self-calibration of a multiple channel clearance sensor system, which in one embodiment includes at least one sensor for measuring at least one clearance parameter signal between a stationary object and a rotating object of a rotating machine. The sensor output is processed as a clearance parameter by an offset correction section configured to determine an offset error in the clearance parameter signal which is used by a level shifter. The level shifter is also switchably coupled to the clearance parameter signal wherein the output of the level shifter, which may be amplified and digitally converted, is processed by a signal level analyzer to determine a channel gain signal.

Electronic self-calibration for sensor clearance

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 versus time data for the tip. The height of the tip corresponds to the distance between the tip and the shelf. The method further includes monitoring the height versus time data, in order to determine whether a change in the height data exceeds a threshold value, and detecting a rub of the rotating object(s) on a second object, when the change in the height data exceeds the threshold value. A rub detection system for a turbomachine and a turbine engine system with rub detection are also provided.

System and method for turbine engine clearance control with rub detection

A processing system for clearance estimation in a rotating machine includes one or more sensors and one or more digital signal processors for calculating the estimated clearance. The processing system may include techniques for obtaining real-time clearance estimates and techniques for obtaining averaged clearance estimates. Aspects of the processing system may also include a method of switching between real-time clearance estimates and averaged clearance estimates depending on the operating conditions of the rotating machine. Other aspects of the processing system include the use of two digital signal processors: a first digital signal processor configured to receive signals from a clearance sensor and perform a first set of high speed processing tasks, and a second digital signal processor configured to receive signals from the first digital signal processor and perform a second set of lower speed processing tasks.

System and method for clearance estimation between two objects

A multi sensor clearance probe with at least longitudinally and transversely spaced apart first and second sensors operable to measure first and second distances respectively between the sensors and a longitudinally spaced apart rotating rotor. The sensors being operable to measure blade tip clearances between radially outer turbine blade tips and an annular stator shroud circumscribing the blade tips. The blade tips may be squealer tips and the sensors operable to measure the distances between the sensors and tops of squealer tip walls and outwardly facing walls within cavities of the squealer tips. The probe may be operably connected to a controller for sending signals to the controller indicating the first and second distances for controlling an air valve used for active clearance control. Two or more of the probe may be used to determine rotor centerline offset.

Multi sensor clearance probe

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. The system also includes a clearance measurement unit configured to process the first and second signals based upon a ratiometric technique to calculate clearance between the first and second objects.

System and method for measuring clearance between two objects

A system for measuring clearance between a stationary object and a movable object is provided. The system includes at least one sensor configured to be disposed on the stationary object and configured to measure an operating parameter corresponding to the movable object and a controller coupled to the at least one sensor, wherein the controller is configured to control an operating mode of the sensor based upon the measured operating parameter.

Multi-range clearance measurement system and method of operation

A system and method for optical transmission of ultrasound data signals from a probe to an image processing system is provided. By using a silicon-based optical modulator to encode ultrasound data signals onto an optical signal, an optical transmission link between the ultrasound probe and the image processing system can achieve a high signal to noise ratio with a lower power input.

System and method for optical data transmission in ultrasound imaging

An etchant including a halogenated salt, such as Cryolite (NaAlF) or potassium tetrafluoro borate (KBF), is provided. The salt may be present in the etchant in an amount sufficient to etch a substrate and may have a melt temperature of greater than about 200 degrees Celsius. A method of wet etching may include contacting an etchant to at least one surface of a support layer of a multi-layer laminate, wherein the support layer may include aluminum oxide; or contacting an etchant to at least one surface of a support layer of a multi-layer laminate, wherein the etchant may include Cryolite (NaAlF), potassium tetrafluoro borate (KBF), or both; and etching at least a portion of the support layer. The method may provide a laminate produced by growing a crystal onto an aluminum oxide support layer, and chemically removing at least a portion of the support layer by wet etch. An electronic device, optical device or combined device including the laminate is provided.

Etchant, method of etching, laminate formed thereby, and device

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Niskayuna, NY, United States of America

Samhita Dasgupta