General Electric Company

Baker Hughes Oilfield Operations LLC

Baker Hughes Holdings LLC

Bently Nevada Corporation

David Robert O'Connor

Brian Francis Howard

Dan Tho Lu

Lysle R Turnbeaugh

Hua Xia

Marco Francesco Aimi

Douglas Scott Byrd

Kevin Thomas McCarthy

David Mulford Shaddock

David Richard Esler

Lam Arthur Campbell

Stacey Joy Kennerly

Michael Joseph Krok

Aaron Jay Knobloch

Juntao Wu

Kung-Li Justin Deng

David Erik Folkner

Boon Kwee Lee

James Gerard Lopez

Bryan James Shadel

Thomas Alfred Laursen

Brian Bowlds

Robert William Waltz

Trevor Cowan

Chris E Latham

William Theodore Lipinski

Duane Plessinger

Patrick Hutchinson

Jacob Reid

John W Grant

Don Morrison

Christian Joseph Wagner

James J Jennings

George M Gorring

Peter V Centore

James Richard Nutt

Ronald Kevin Gilstrap

Systems and methods for improved perturbation generation are provided. A perturbation generation system can include a first rotor and a second rotor. The first rotor can be configured to hold a first magnet and a second magnet. The second rotor can be configured to hold a third magnet and a fourth magnet. The first rotor can be rotatably and proximately arranged with the second rotor, where the first and second magnets can be configured to interact with the third and fourth magnets to create a force between the first rotor and the second rotor as the first rotor rotates relative to the second rotor.

Perturbator systems and methods for generating perturbations with a known waveform and amplitude to a system

Systems and methods for turbomachine control based upon magnetostrictive sensor measurements are provided. A turbomachine (e.g., a compressor) can be instrumented with at a sensor configured to measure an operating parameter, and a magnetostrictive sensor configured to acquire a torsional measurement (e.g., torsional vibration and/or torque) of a turbomachine shaft. An analyzer can receive the operating parameter measurement and torsional measurement and determine an updated operating parameter limit and/or an updated exclusion zone based upon the torsional measurement for control of the operating parameter.

Closed loop control employing magnetostrictive sensing

A method includes receiving data characterizing time-dependent lateral vibration of a shaft of a machine, the lateral vibration indicative of motion of at least a portion of the shaft perpendicular to a first direction. The lateral vibration is detected by a first sensor located at a first predetermined location on the shaft. The method further includes, receiving data characterizing time-dependent torsional vibration of the shaft, the torsional vibration indicative of rotation of the shaft around the first direction. The torsional vibration is detected by a second sensor located at a second predetermined location on the shaft. The method also includes calculating a coherence of the data characterizing time-dependent lateral vibration and the data characterizing time-dependent torsional vibration. The method further includes identifying, based on the coherence, a first frequency value in the frequency domain indicative of coupling between the time-dependent lateral vibration and the time-dependent torsional vibration.

Torsional-lateral cross-coupling detection

Twisted probe cap

Systems, methods, and devices for positioning, orienting, and/or aligning a stress sensor assembly are provided. Raw stress signals, which can correspond to stress in the target, can be generated by detecting a magnetic flux that travels through the target. The raw stress signals can be sensitive to an alignment of the sensor relative to the target. In order to minimize measurement error, the stress sensor can be properly aligned relative to the target prior to taking a stress measurement. Sensor alignment can involve adjusting a yaw, pitch, and/or roll of the sensor, measuring the raw stress signals, attenuating the detected magnetic flux, and measuring the raw stress signals again. When the stress sensor is properly aligned, a change in a size of a gap between the sensor and a surface of a target can result in approximately equal changes in the raw stress signal.

Non-contact magnetostrictive sensor alignment

A pressure compensated sensing system and methods for using the same are provided. The system can include a housing, a seal, an incompressible fluid, and sensing elements. The seal can be positioned within a housing cavity and divide the cavity into two portions. A first cavity portion can be sealed from the fluid environment by the seal and contain the sensing elements and the incompressible fluid. A second cavity portion can be in fluid communication with the fluid environment. The fluid environment can apply an external pressure to the seal that is opposed by an internal pressure of the sealed cavity applied to the seal by the incompressible fluid. When the internal pressure and the external pressure are different, the seal can move in a manner that changes the volume of the sealed cavity by an amount sufficient to equalize the internal pressure with the external pressure.

Pressure compensated sensors

A fiber Bragg grating multi-point temperature sensing system comprises a fiber sensing cable package and a plurality of clamping devices distributed along an inner surface of a wall in a circumferential direction for securing the fiber sensing cable package. The fiber sensing cable package comprises a fiber Bragg grating based sensing cable comprising at least one optical fiber, a plurality of Bragg gratings inscribed in the optical fiber, and a fabric layer and a sheath tube surrounding the optical fiber. The multi-point fiber temperature sensing system comprises a light source for transmitting light to the Bragg gratings based sensing cable package, and a detector module receiving reflected signal. Each clamping device comprises a radiation tee and defines at least one mounting hole for securing the fiber sensing cable.

Fiber Bragg grating sensing package and system for gas turbine temperature measurement

A method for assembling a Fabry-Perot interferometer includes depositing a first metal layer on an end portion of a ferrule, depositing a second metal layer on a back portion of a die, placing the first metal layer and the second metal layer in contact with each other with respective first and second orifices aligned with respect to each other, and bonding the ferrule to the die by thermo compression. The resulting interferometer includes a glass die with a cavity, a silicon diaphragm disposed over the opening of the cavity and bonded to the glass die, a ferrule bonded to the glass die by thermo compression with the first and second orifices being aligned to each other, and an optical fiber inserted through the other end of the ferrule in direct contact to a back portion of the die and aligned with the first orifice.

High-temperature pressure sensor and method of assembly

A damper box for an orifice air injector, the damper box comprising front and rear faces with respective front and rear openings therein, a pair of sides, a top and a bottom; and a pair of gates pivotally mounted within the damper box and actuatable between open and closed positions.

Zero cooling air flow overfire air injector and related method

Growing community of inventors

Gardnerville, NV, United States of America

David Robert O'Connor