Method Of Operation Patents (Class 415/1)
  • Patent number: 9683563
    Abstract: A system and method are provided for a variable speed compressor with a control module that controls an operating frequency of the variable speed compressor. The control module stores a prohibited frequency range that includes a resonant frequency of the variable speed compressor and an allowed upper frequency above the prohibited frequency range and an allowed lower frequency below the prohibited frequency range. The control module determines a requested frequency and operates the variable speed compressor at the allowed upper frequency for an upper frequency operating time and at the allowed lower frequency for a lower frequency operating time when the requested frequency is within the prohibited frequency range. The control module determines the upper frequency operating time and the lower frequency operating time such that a time-averaged frequency output over the upper frequency operating time and the lower frequency operating time corresponds to the requested frequency.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: June 20, 2017
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Jean-Luc M. Caillat
  • Patent number: 9683484
    Abstract: A centrifugal compressor for a turbocharger includes an inlet-adjustment mechanism in an air inlet for the compressor, operable to move between an open position and a closed position in the air inlet. The inlet-adjustment mechanism includes a variable-geometry conduit comprising a plurality of vanes that in the closed position collectively form a converging inlet member having a trailing edge inner diameter that is smaller than an inner diameter of the shroud surface of the compressor housing at the inducer portion of the compressor wheel such that an effective diameter of the air inlet at the inducer portion is determined by the trailing edge inner diameter of the variable-geometry conduit. The vanes in the open position are pivoted radially outwardly so as to increase the trailing edge inner diameter of the inlet member and thereby increase the effective diameter of the air inlet at the inducer portion.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: June 20, 2017
    Assignee: Honeywell International Inc.
    Inventors: Aurelien Tingaud, Damien Marsal, Chris Groves, Alain Lombard, Lionel Toussaint, Hani Mohtar
  • Patent number: 9650909
    Abstract: In certain embodiments, a system includes a controller configured to obtain an inter-stage pressure measurement between stages of a multi-stage compressor. The controller is also configured to identify actual damage in the multi-stage compressor based at least in part on the inter-stage pressure measurement.
    Type: Grant
    Filed: May 7, 2009
    Date of Patent: May 16, 2017
    Assignee: General Electric Company
    Inventor: Raub Warfield Smith
  • Patent number: 9650965
    Abstract: A gas turbine engine according to an example of the present disclosure includes, among other things, a fan, a turbine section having a fan drive turbine rotor, and a compressor rotor. A gear reduction is configured to effect a reduction in a speed of the fan relative to an input speed from the fan drive turbine rotor. Each of the compressor rotor and the fan drive turbine rotor includes a number of blades in each of a plurality of blade rows. The number of blades are configured to operate at least some of the time at a rotational speed.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: May 16, 2017
    Assignees: United Technologies Corporation, MTU Aero Engines AG
    Inventors: David A. Topol, Bruce L. Morin, Detlef Korte
  • Patent number: 9651443
    Abstract: The present disclosure is directed to a system and method for protecting a rotary machine in a high noise environment. In one embodiment, the method includes a step of measuring a vibration signal during operation of the rotary machine. Another step includes modulating the vibration signal at a desired frequency to generate a modulated signal having a direct current (DC) value. The desired frequency varies as a function of an operational parameter of the rotary machine. The method also includes a step of filtering the modulated signal via one or more low-pass filters. Another step includes comparing an amplitude of the filtered signal to a threshold amplitude for one or more components of the rotary machine. The threshold amplitude is indicative of an imbalance within one or more components of the rotary machine. The rotary machine is then operated based on the comparison so as to protect the rotary machine from damage caused by the imbalance within the one or more components of the rotary machine.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: May 16, 2017
    Assignee: General Electric Company
    Inventors: Mark Edward Cardinal, Jignesh Govindlal Gandhi, Robert J. Dewey, Ryan Spencer Close, Thomas Ernst Dinjus, Bernardo Adrian Movischoff, David Charles Korim
  • Patent number: 9631504
    Abstract: A guide vane is disclosed. The guide vane includes a button, a trunnion connected to the button, and an airfoil connected to the button. The airfoil includes an overhang portion wherein the overhang portion extends from one end of the button to a distal end of the airfoil. The guide vane includes a button corner located near the beginning of the overhang portion. The guide vane includes a variable fillet extending into the overhang portion. The variable fillet includes sections of different radiuses along the length of the fillet.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: April 25, 2017
    Assignee: Solar Turbines Incorporated
    Inventor: Sean Joseph Bentley
  • Patent number: 9611857
    Abstract: An anti-surge system capable of anticipating a surge event in a compressor for readying the actuator to quickly actuate the anti-surge valve from the closed position to the open position. The control system includes a compressor surge controller configured to transmit a signal to the valve positioner when the operating point of the valve is approaching the surge control line. The compressor surge controller may monitor an operating margin equal to the difference between the operating point and the surge control line, and when the operating margin falls below a prescribed threshold, the compressor surge controller may send a signal to the positioner. In turn, the positioner may vent some pressure from the actuator. In this way, the dead time of the anti-surge valve on the valve seat is minimized and the valve will react more promptly to an opening signal.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: April 4, 2017
    Assignee: Control Components, Inc.
    Inventors: Fabio Giove, Flavio Tondolo, Marco Mastrovito
  • Patent number: 9605541
    Abstract: A bladed rotor for a turbomachine, in particular a gas turbine, having a plurality of blades distributed around the circumference thereof; the blade distribution being made up of a natural-number sector count of first angular sectors and second angular sectors; a first blade count of first blades being arranged in the first angular sectors, and a second blade count of second blades being arranged in the second angular sectors, said second blade count being different from said first blade count; and the sector count being odd (Z=2n+1, n=1, 2, 3, . . . ) and/or greater than two (Z>2).
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: March 28, 2017
    Assignee: MTU Aero Engines AG
    Inventors: Johann Geppert, Peter Eibelshaeuser
  • Patent number: 9605558
    Abstract: Systems and methods for preventing excessive loading on a wind turbine are disclosed. The method includes: measuring an actual wind parameter upwind from the wind turbine using one or more sensors; providing the measured wind parameter to a processor; providing a plurality of wind turbine operating data to the processor; utilizing the plurality of operating data to determine an estimated wind turbine condition at the wind turbine; generating a control wind profile based on the actual wind parameter and the estimated wind turbine condition; and, implementing a control action based on the control wind profile to prevent excessive loading from acting on the wind turbine.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: March 28, 2017
    Assignee: General Electric Company
    Inventors: Thomas Franklin Perley, Brandon Shane Gerber, Arne Koerber
  • Patent number: 9551276
    Abstract: Systems and methods are provided for reducing surge in a boosted engine system. One method comprises adjusting an opening of a compressor recirculation valve to allow a compressor recirculation flow based on a combination of a nominal compressor recirculation flow and a filtered nominal compressor recirculation flow. The nominal compressor recirculation flow may be calculated as a difference between a desired compressor flow rate based on a surge limit of compressor and an estimated throttle mass flow rate.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: January 24, 2017
    Assignee: Ford Global Technologies, LLC
    Inventors: Hamid-Reza Ossareh, Paul Martin Niessen
  • Patent number: 9523286
    Abstract: A vane segment according to the present invention includes: an outer connection member connecting a plurality of vanes; positioning jigs for positioning end vanes located at both ends, of the plurality of vanes; and radial restriction sections which restrict the outer connection member so as to be relatively immovable to an outer side in a radial direction of a vane ring, wherein: each of the plurality of vanes has a vane main body and an outer shroud; grooves are formed in the outer shrouds; openings into each of which the positioning jig is inserted are formed in portions of the outer connection member; holes into each of which the positioning jig inserted in the opening is inserted are formed in bottoms of the grooves of the two end vanes; and at least one of the positioning jigs is an eccentric positioning jig.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: December 20, 2016
    Inventors: Kunihiko Waki, Kenichi Arase
  • Patent number: 9513051
    Abstract: There is provided a method for recovering hydrocarbon compounds from a gaseous by-products generated in the Fisher-Tropsch synthesis reaction, the method comprising a pressurizing step in which the gaseous by-products are pressurized, a cooling step in which the pressurized gaseous by-products are pressurized to liquefy hydrocarbon compounds in the gaseous by-products, and a separating step in which the hydrocarbon compounds liquefied in the cooling step are separated from the remaining gaseous by-products.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: December 6, 2016
    Inventor: Kazuhiko Tasaka
  • Patent number: 9506474
    Abstract: Methods and systems are provided for adapting a compressor surge line in real-time. In one example, a method may include retarding a surge line in response to a number of surge events greater than a threshold number of surge events, and advancing the surge line in response to a number of aggressive tip-out events, that do not result in surge, greater than a threshold number of tip-out events.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: November 29, 2016
    Assignee: Ford Global Technologies, LLC
    Inventors: Baitao Xiao, Hamid-Reza Ossareh, Adam Nathan Banker
  • Patent number: 9501035
    Abstract: An electronic apparatus includes a thermopile array sensor, a reflector, and a temperature detection unit. The thermopile array sensor includes a plurality of thermopile elements arranged in a two-dimensional array pattern and a temperature detection surface divided into a plurality of predetermined regions aligned in vertical and horizontal directions, and the thermopile elements output a temperature detection signal corresponding to a temperature of the respective predetermined regions. The reflector is set at an angle to reflect infrared light emitted from a measurement point located outside of a viewing angle of the thermopile array sensor, so as to allow the infrared light to be incident on the temperature detection surface. The temperature detection unit detects the temperature on the basis of the temperature detection signal outputted from each of the thermopile elements. The thermopile array sensor and the reflector are located inside the electronic apparatus.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: November 22, 2016
    Assignee: KYOCERA Document Solutions Inc.
    Inventors: Kentaro Naruse, Rie Tezuka
  • Patent number: 9500085
    Abstract: A method for enhancing one or more performance parameters of a gas turbine having at least one row of clocked airfoils may generally include choosing a first, a second and a third row of airfoils where the third row is clocked relative to the first row. An unsteady computational fluid dynamics model may be used to determine at least one wake parameter of a working fluid flowing from the second row of the airfoils to the third row of the airfoils. At least one design parameter of the airfoils of the second row may be modified, and the unsteady computational fluid dynamics model may then be used to determine the effect of the airfoil design parameter modification on the at least one wake parameter. The effect on the wake parameter may be compared to a predetermined target range.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: November 22, 2016
    Inventors: Paul Kendall Smith, Sylvain Pierre, Dennis Scott Holloway
  • Patent number: 9494281
    Abstract: Systems and methods are provided for compressing a cryogenic fluid using a multi-stage compressor. Coolant in a first coolant loop cools cooling jackets of the compression stages and/or inter-stage heat exchangers and warms a pre-compression heat exchanger. The temperature of the coolant in the first heat exchanger is moderated by ambient-air heat exchange. The process fluid is electively cooled by one of the interstage heat exchangers after each of the compression stage if the temperature of the process fluid is above a temperature criterion. This enables the system to operate through a transient period (cool down period) without venting process fluid. The interstage heat exchangers are preferably bypassed when the system reaches steady-state operating temperature.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: November 15, 2016
    Assignee: Air Products and Chemicals, Inc.
    Inventors: David Jonathan Chalk, David John Farese
  • Patent number: 9488191
    Abstract: An exhaust diffuser comprising an inner boundary and an outer boundary forming an annular gas path, and a plurality of strut structures extending radially within the gas path. Each of the strut structures include pressure and suction side walls, and a plurality of radially spaced flow injectors are formed in at least one of the pressure and suction side walls for injecting a fluid flow into the gas path adjacent to the strut structure. At least two fluid supply conduits provide a fluid flow to respective radially spaced flow injectors, and a flow control device is associated with each of the conduits to independently control a fluid flow from a fluid source to each of the radially spaced flow injectors.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: November 8, 2016
    Assignee: Siemens Aktiengesellschaft
    Inventor: Pawel Matys
  • Patent number: 9476319
    Abstract: A turbocharger has a turbine housing formed with a coolant inlet channel and a coolant outlet channel. The turbine housing contains a coolant separating region in which delivered coolant is separated and a coolant combining region in which coolant is combined again. Each of the coolant separating region and the coolant combining region is equipped with a conical conducting body.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: October 25, 2016
    Assignee: Continental Automotive GmbH
    Inventors: Mathias Bogner, Ralph-Maurice Koempel, Marc Hiller
  • Patent number: 9435221
    Abstract: Embodiments of the invention relate generally to turbomachines and, more particularly, to the positioning of airfoils to reduce pressure variations entering a diffuser. One embodiment includes a turbomachine comprising a diffuser, a plurality of airfoil rows, including a first airfoil row adjacent the diffuser, the first airfoil row being of a first type selected from a group consisting of stationary vanes and rotating blades, a second airfoil row adjacent the first airfoil row, the second airfoil row being of a second type different from the first type, and a third airfoil row of the first type adjacent the second airfoil row, wherein at least one of the plurality of airfoil rows is clocked, relative to another airfoil row of the turbomachine, reducing variations in airflow circumferential pressure at at least one spanwise location in the diffuser adjacent the first airfoil row in an operative state of the turbomachine.
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: September 6, 2016
    Assignee: General Electric Company
    Inventor: Paul Kendall Smith
  • Patent number: 9429161
    Abstract: Provided is a method of controlling a compressor system including measuring variables for generating a performance curve of a compressor, calculating changing rates of the variables; comparing the calculated changing rates with preset changing rate variations; and determining a surge control line different from a preset surge control line according to the calculated changing rates if the calculated changing rates are out of ranges of the preset changing rate variations.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: August 30, 2016
    Assignee: Hanwha Techwin Co., Ltd.
    Inventor: Sung-soon Park
  • Patent number: 9422826
    Abstract: A start control unit for a steam turbine plant, wherein inputting a measured value of a steam temperature fed to a steam turbine, a measured value or an estimated value of a rotor temperature of the steam turbine, and a measured value of a casing temperature of the steam turbine, and controlling a steam flow rate so as to increase the steam flow rate fed to the steam turbine when a difference between the steam temperature and the rotor temperature is smaller than a first regulated value and a difference between the rotor temperature and the casing temperature is a second regulated value or larger.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: August 23, 2016
    Assignee: Mitsubishi Hitachi Power Systems, Ltd.
    Inventors: Eunkyeong Kim, Yasuhiro Yoshida, Takuya Yoshida, Tatsuro Yashiki, Nobuyuki Hokari, Kenichiro Nomura, Kazunori Yamanaka, Fumiyuki Suzuki, Masaaki Tomizawa, Yuichi Takahashi
  • Patent number: 9416790
    Abstract: A method and apparatus controls a compressor, where the compressor inlet gas may contain water and/or non-aqueous liquid. The method includes the steps of measuring temperature at the compressor inlet and/or outlet side, measuring pressure at the compressor inlet and outlet side in order to determine a compressor pressure ratio, measuring fluid mixture density at the compressor inlet and/or outlet side, measuring individual volume fractions of gas, water and non-aqueous liquid at the compressor inlet and/or outlet side, measuring fluid velocity at the compressor inlet and/or outlet side, and determining individual flow rates of gas, water and non-aqueous liquid on the basis of the measured individual volume fractions of gas, water and non aqueous liquid and the fluid velocity at the compressor inlet and/or outlet side.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: August 16, 2016
    Assignee: STATOIL ASA
    Inventors: Lars Brenne, Jan Høydal
  • Patent number: 9410744
    Abstract: A system for removing molten metal from a vessel is disclosed. The system includes a pump and a refractory casing that houses the pump. As the pump operates it moves molten metal upward through an uptake section of the casing until it reaches an outlet wherein it exits the vessel. The outlet may be attached to a launder. Another system uses a wall to divide a cavity of the chamber into two portions. The wall has an opening and a pump pumps molten metal from a first portion into a second portion until the level in the second portion reaches an outlet and exits the vessel.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: August 9, 2016
    Assignee: Molten Metal Equipment Innovations, LLC
    Inventor: Paul V. Cooper
  • Patent number: 9394884
    Abstract: A method of operating a wind turbine and a wind turbine employing this method are provided. The method includes measuring an operating temperature in a plurality of components of the wind turbine yielding a plurality of measured operating temperatures. Each measured operating temperature is subtracted from a predefined maximum allowable operating temperature for the corresponding component of the wind turbine thereby yielding a plurality of operating temperature margins. A minimum operating temperature margin among the plurality of operating temperature margins is determined and at least one operating parameter of the wind turbine is set in accordance with the minimum operating temperature margin.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: July 19, 2016
    Inventor: Hans Laurberg
  • Patent number: 9382920
    Abstract: The present application provides a wet gas compression system for a wet gas flow having a number of liquid droplets therein. The wet gas compression system may include a pipe, a compressor in communication with the pipe, and a thermoacoustic resonator in communication with the pipe so as to break up the liquid droplets in the wet gas flow.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: July 5, 2016
    Assignee: General Electric Company
    Inventors: Christian Vogel, Vittorio Michelassi, Rene de Nazelle
  • Patent number: 9376934
    Abstract: A standard for supporting a turbine rotor and a turbine shell includes a bearing block including a housing enclosing bearing surfaces engageable by the turbine rotor. Turbine shell-arm supports are located on opposite sides of the housing, the turbine shell-arm supports each having a horizontal and one or more vertical surfaces adapted to be engaged by support arms of a turbine shell enclosing at least a portion of the turbine. An internal cooling/heating circuit is arranged to simultaneously cool or heat the bearing block and the turbine shell-arm supports to thereby reduce differential thermal growth characteristics of the turbine rotor and turbine shell.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: June 28, 2016
    Assignee: General Electric Company
    Inventors: Edward Jay Cooper, Peter John Eizenzopf, Xiaoqing Zheng, William Patrick Rusch, Hemanth GS Kumar, Craig Daniel Ivancic, Edward John Sharrow
  • Patent number: 9366201
    Abstract: A thrust reverser for a nacelle of a turbojet engine includes deflecting cascades and an external cowl which translates from a closure position to an opening position by a set of control cylinders being attached by their ends to the external cowl. The deflecting cascades are supported by a front frame and a rear frame respectively and are enclosed in an envelope formed by a fan carter and by a fan cowl. The thrust reverser further includes a lock which is able to connect or disconnect the deflecting cascades to the external cowl. When the lock is unlocked, the set of control cylinders translate the external cowl alone in downstream direction while in the lock position, the control cylinders translates the external cowl and the deflecting cascades together in downstream direction.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: June 14, 2016
    Assignee: AIRCELLE
    Inventor: Pierre Caruel
  • Patent number: 9353727
    Abstract: A method of in situ calibrating load sensors of a horizontal axis wind turbine is described. The method comprises the steps of: a) determining a rotor azimuth angle of a first wind turbine blade, b) determining a pitch angle of the first wind turbine blade, c) measuring loads in a first cross-section of the first wind turbine blade using the first load sensors, d) calculating theoretical loads based on at least the rotor azimuth angle and the pitch angle of the blade determined in steps a) and b), e) comparing the loads measured in step c) with the theoretical loads calculated in step d), and f) calibrating the first load sensors based on the comparison of step e), wherein the calibration are based only on measurements carried out, when the generator is cut out.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: May 31, 2016
    Assignee: LM GLASFIBER A/S
    Inventor: Mark Olaf Slot
  • Patent number: 9347432
    Abstract: A computer-implemented method of operating a wind turbine park including operating wind turbines includes recording a plurality of sound pressure measurements of the wind turbine park, thereby generating a sound recording. The method also includes calculating values for a plurality of acoustic features associated with the sound recording. The method further includes determining a relationship between the calculated values for the plurality of acoustic features and modeled acoustic features values resident within a probabilistic auditory model of the wind turbine park. The method also includes distinguishing a first contribution to the sound recording originating from the at least one operating wind turbine from a second contribution to the sound recording originating from non-wind turbine sources based on the determined relationship.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: May 24, 2016
    Assignee: General Electric Company
    Inventors: Andreas Herrig, Benoit Philippe Petitjean, Sara Simonne Louisa Delport, Nathan Charles Schneider
  • Patent number: 9334869
    Abstract: A fluid stabilizing control method of an axial compressor is provided, which includes driving to drive the axial impeller, and stall controlling to suppress or prevent an occurrence of a stall that may transpire during rotation of the axial impeller by supplying highly-pressurized compressed air into the casing through a stall controller according to a predetermined time and volume. Accordingly, a stall may be suppressed or prevented, the occurrence of a stall that may transpire when a threshold point is exceeded by an unexpected event during driving in a low-flow high-pressure section on a performance curve, in which efficiency is high. Additionally, since an air injection method for suppressing the stall is properly applied, an amount of power expended for the stall control may be reduced while supply of the high-pressure compressed air is minimized, thereby achieving economically feasible stall control.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: May 10, 2016
    Assignee: Korea Aerospace Research Institute
    Inventors: Young Seok Kang, Soo Seok Yang, Hyung Soo Lim, Hyo Jo Bae, Seung Jin Song, Shin Hyoung Kang
  • Patent number: 9334800
    Abstract: To provide a method of controlling a turbine equipment and a turbine equipment capable of carrying out a starting operation of controlling a load applied to a speed reducing portion while complying with a restriction imposed on an apparatus provided at a turbine equipment. The invention is characterized in including a speed accelerating step (S1) of increasing a revolution number by driving to rotate a compressing portion and a turbine portion by a motor by way of a speed reducing portion, a load detecting step (S2) of detecting a load applied to the speed reducing portion by a load detecting portion, and a bypass flow rate controlling step (S3) of increasing a flow rate of a working fluid bypassed from a delivery side to a suction side of the compressing portion when an absolute value of the detected load is equal to or smaller than an absolute value of a predetermined value and reducing the flow rate of the bypassed working fluid when equal to or larger than the absolute value of the predetermined value.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: May 10, 2016
    Inventors: Hitoi Ono, Takashi Sonoda, Naoto Tochitani, Makoto Kato, Masahide Umaya, Fuminori Fujii
  • Patent number: 9309896
    Abstract: A compressor unit for processing a working fluid comprising a compressor inside a housing to compress the working fluid wherein a collection chamber is fluidly coupled with a working fluid inlet of said housing.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: April 12, 2016
    Assignee: Nuovo Pignone, S.P.A.
    Inventors: Giuseppe Vannini, Luciano Mei, Massimo Pinzauti, Franco Frosini
  • Patent number: 9303533
    Abstract: A method for producing work from heat including mixing a first working fluid F1 vapor with a second working fluid F2 vapor to form a third working fluid F3; atomizing and/or vaporizing a liquid into the third working fluid F3 to define a saturated working fluid; and expanding the saturated working fluid to perform useful work. A high pressure F1(2) portion of the first working fluid F1 may be expanded prior to the mixing step while the F2 vapor is compressed prior to the mixing step. The steps of compressing the F2 vapor and expanding the high pressure F1(2) portion of the first working fluid F1 may be carried out by an integral compressor and expander assembly (204/209). The integral compressor and expander assembly (204/209) may be positioned within a combined mixer assembly (300) with an internal mixing chamber (206) and outlets (375, 351) of both the compressor (204) and expander (209) are directed toward the mixing chamber 206.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: April 5, 2016
    Assignee: Harris Corporation
    Inventor: William R. Palmer
  • Patent number: 9243644
    Abstract: Methods, devices and systems capable of performing a hot restart of a compressor driven by a turbine are provided. The turbine has a high speed shaft and a low speed shaft connected to the compressor. A base slow roll speed at which a speed of the low speed shaft is in a slow roll range is maintained at the high speed shaft for a predetermined time. Then, when a vibration amplitude of the compressor is larger than a vibration limit, the maintaining is repeated. Otherwise, a set speed of the high speed shaft is increased, until a current speed of the low speed shaft reaches a minimum operating speed. If, while increasing the set speed, the vibration amplitude becomes larger than the vibration limit, the maintaining is repeated.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: January 26, 2016
    Assignee: Nuovo Pignone, S.P.A.
    Inventors: Gianni Bagni, Antonio Baldassarre, Leonardo Baldassarre, Michele Fontana
  • Patent number: 9194247
    Abstract: A seal configuration includes a housing and a rotatable member rotationally mounted relative to the housing. The rotatable member has at least one portion defining an outer perimetrical face that is configured to contact the housing during operational conditions that cause a radial dimension of the at least one portion to increase. The at least one portion has opposing axial surfaces with each of the opposing axial surfaces being dimensionally axially nearer to the other of the opposing axial surfaces immediately radially inwardly of the outer perimetrical face than a furthest part of the outer perimetrical face.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: November 24, 2015
    Assignee: General Electric Company
    Inventors: David Richard Johns, Eric David Roush
  • Patent number: 9176023
    Abstract: A method for obtaining an estimate for a process quantity of a turbomachine comprises measuring (301) first process quantities and calculating (302) an estimate for a second process quantity, for example mass flow, on the basis of the measured first process quantities and a reference table of interrelations between process quantities prevailing in reference inlet conditions corresponding to a pre-defined inlet fluid temperature, a pre-defined inlet fluid pressure, and pre-defined fluid properties at the inlet. The reference table and the measured first process quantities represent such a set of data values that the estimate is obtainable on the basis of different sub-sets of the data values. Hence, the estimation task is over-posed in the sense that there is more data than necessary for obtaining the estimate. In the calculation of the estimate, more weight is given to such a part of the data which has a smaller error contribution.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: November 3, 2015
    Inventors: Arttu Reunanen, Erkki Lantto, Ville Tommila
  • Patent number: 9163608
    Abstract: A wind turbine apparatus includes a shaft carrying a plurality of rotor wheels fixed at axially spaced intervals. Each rotor wheel includes buckets at the periphery thereof. First and second generally cylindrical housing are disposed in concentric relationship to define a blind annular chamber surrounding the rotor wheels that directs ambient winds to through the inner wall of the inner cylindrical housing to the periphery of the respective rotor wheels. One extremity of the blind annular chamber is open for receiving ambient air flow and a second axial extremity proximate is closed, whereby axial airflow into the annular chamber is substantially directed in a radial direction toward the buckets carried on the rotor wheels to cause rotation of the shaft.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: October 20, 2015
    Inventor: Jose E Morales Franqui
  • Patent number: 9127684
    Abstract: Methods and devices for performing a model based anti-surge dead time compensation in systems including a compressor and an anti-surge loop are provided. A new position of an anti-surge valve on the anti-surge loop is determined by correcting for dead time a value of the anti-surge parameter calculated from field measurements, based on a predicted anti-surge parameter estimated using a deterministic model which has as variables the field measurements and a current position of the anti-surge valve.
    Type: Grant
    Filed: October 4, 2011
    Date of Patent: September 8, 2015
    Assignee: Nuovo Pignone S.P.A.
    Inventor: Daniele Galeotti
  • Patent number: 9121285
    Abstract: A turbine includes a rotor and a casing that circumferentially surrounds at least a portion of the rotor. The rotor and the casing at least partially define a gas path through the turbine. A last stage of rotating blades is circumferentially arranged around the rotor and includes a downstream swept portion radially outward from the rotor. A method for reducing shock losses in a turbine includes removing a last stage of rotating blades circumferentially arranged around a rotor and replacing the last stage of rotating blades with rotating blades having a downstream swept portion radially outward from the rotor.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: September 1, 2015
    Inventor: Neil Ristau
  • Patent number: 9072569
    Abstract: The invention relates to a medical turbine handpiece, in particular a dental turbine handpiece, having a drive shaft rotatably mounted in the front end region of the handpiece and to which a tool can be connected, as well as a turbine wheel arranged so as to be non-rotatable on the drive shaft and is arranged in a turbine chamber realized in the end region, into which turbine chamber a supply line for a flowing pressure medium for driving the turbine wheel opens out at an inlet opening and from which turbine chamber a removal line extends at an outlet opening, wherein at least one cross connecting channel for the pressure medium is realized in the wall of the turbine chamber, the cross connecting channel connecting the axially remote edge region of the turbine chamber to a region of the turbine chamber that is axially close to the drive shaft.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: July 7, 2015
    Inventors: Thomas Roesch, Alexander Flock
  • Patent number: 9068557
    Abstract: A directed flow wind turbine is configured to utilize a laminar flow of an entering wind through the directed flow wind turbine and includes a plurality of rotor vanes mechanically coupled to an upper rotor ring and a lower rotor ring. A shaft is mechanically coupled to the upper rotor ring and the lower rotor ring and configured to receive torque from the plurality of rotor vanes. An upper housing plate is attached to the shaft with an upper bearing. A lower housing plate is attached to the shaft with a lower bearing. An upwind flow shield, a downwind flow shield, and a rotor protector shield are attached to the upper housing plate and the lower housing plate. Wherein dimensions of these components are controlled in order to maintain the laminar flow of the entering wind.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: June 30, 2015
    Inventor: Calvin Lee Garrett
  • Patent number: 9062552
    Abstract: A turbine engine stator stage includes a plurality of vanes with each of the plurality of vanes having a camber angle. The plurality of vanes is arranged in a plurality of groups with each group including a pre-determined sequence of vanes. The ordering of vanes within each group is determined by the camber of the individual vanes. This results in an arrangement of vanes within the stator stage which can modify the flow characteristics of the air entering the stator stage to reduce the circumferential pressure variation in the flow region immediately downstream of the stator stage.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: June 23, 2015
    Assignee: ROLLS-ROYCE plc
    Inventor: Lewis J. Holmes
  • Publication number: 20150147155
    Abstract: A fan control method, apparatus, and system, so as to implement speed regulation and rotation direction control on a four-wire system counter-rotating fan with a conventional four-wire fan interface by using a PWM control bus. The method provided by the embodiments of the present invention includes: receiving a first fan regulation and control signal sent by a system control module; converting the first fan regulation and control signal to a forward-rotating control signal, a counter-rotating control signal, or a rotation direction switchover control signal according to a duty cycle range of the first fan regulation and control signal and a current rotation direction of the fan; and sending a control signal obtained by the conversion to a fan driving module, so that the fan driving module drives, according to the control signal obtained by the conversion, the fan to operate.
    Type: Application
    Filed: January 28, 2015
    Publication date: May 28, 2015
    Inventors: WEIFENG DUAN, Xi Chao
  • Publication number: 20150143819
    Abstract: Systems, methods, and devices relating to a mechanism which can be used in gas cooling devices, pneumatic motors, turbines and other pressurized gas devices. A rotatable rotor is provided along with a number of hollow conduits that radially radiate from an exit port at the center of the rotor. The pressurized gas is injected into the mechanism at the inlet port(s). The gas enters the conduits and travels from the inlet port(s) to the exit port(s). In doing so, the gas causes the rotor to rotate about its central axis while the gas cools. This results in a colder gas at the exit port(s) than at the inlet port(s).
    Type: Application
    Filed: May 28, 2013
    Publication date: May 28, 2015
    Inventors: Jeliazko Polihronov, Anthony G. Straatman
  • Publication number: 20150147154
    Abstract: The embodiments herein disclose a system and method for providing an intrinsic safety to rotating machinery from the failure of internal high speed rotating structures. According to one embodiment herein, a system assembly comprises a unique design of the rotating structure to provide a sufficient safety margin and redundancy in configuration. The system assembly comprises a blower fan assembled inside a blower casing and rotated inside the casing. The fan is manufactured by a single forging process instead of an investment casting. The fan comprises several blades mounted to a hub in a shroud to draw a required quantity of fluid. The fan is mounted to a shaft through the hub. When the blower fan is rotated at a high speed exceeding the design parameters, a ‘rub and stop’ mechanism is initiated to halt the fan.
    Type: Application
    Filed: October 14, 2014
    Publication date: May 28, 2015
  • Patent number: 9039334
    Abstract: A pipe of an apparatus has a first gas in a first space and a second gas in a second space. The first gas is in the amount to generate a buoyancy force that exceeds at least a gravity force to position the apparatus in a stationary state at a predetermined distance relative to a reference surface. A fixture is coupled to the apparatus to secure the apparatus in the stationary state relative to the ground without supporting the apparatus. The first gas is lighter than the second gas. The pipe is capable of creating a flow of the second gas.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: May 26, 2015
    Inventor: Sergey Nikolayevich Ermilov
  • Publication number: 20150139775
    Abstract: A system for extracting foreign matter in a gas turbine includes multiple variable bleed valve (VBV) doors disposed on the outer engine casing between a low pressure compressor and a high pressure compressor for bleeding a portion of flow from a core engine flow path into a bypass flow path. The system includes an outlet guide vane (OGV) assembly having multiple guide vanes disposed within the core flow path and multiple support struts positioned downstream from the multiple guide vanes. Each pairs of adjacent support struts comprises at least one VBV door therebetween and a section of the OGV assembly located at an upstream side of the fan hub frame before the each pairs of adjacent support struts. Each section of the OGV assembly includes a first side with one or more guide vanes with trimmed trailing edges configured for directing flow into the at least one VBV door.
    Type: Application
    Filed: November 21, 2013
    Publication date: May 21, 2015
    Applicant: General Electric Company
    Inventors: Anurag Kumar, Byron Andrew Pritchard, Chiong Siew Tan
  • Publication number: 20150139776
    Abstract: Provided is a compressor control device configured to control a flow rate of a compressor having a plurality of impellers connected to an outlet port-side flow path in parallel and a flow rate regulation unit configured to regulate a flow rate of each of the impellers, the compressor control device including a pressure detection unit configured to detect a pressure of the outlet port-side flow path, a flow rate detection unit configured to detect the flow rate of each of the impellers, and a control unit configured to output a flow rate regulation command of each of the impellers to the flow rate regulation unit and control the flow rate regulation unit based on the detection result of the pressure detection unit.
    Type: Application
    Filed: September 12, 2013
    Publication date: May 21, 2015
    Inventors: Kazuhiro Takeda, Yosuke Nakagawa
  • Publication number: 20150139777
    Abstract: A turbocharger system and method for a vehicle, wherein the system comprises a high pressure turbocharger and a low pressure turbocharger. Both the high and low pressure turbochargers are driven by exhaust gas on an exhaust side of the turbochargers. The system further comprises a first bypass conduit that bypasses the low pressure turbocharger during set events.
    Type: Application
    Filed: November 7, 2014
    Publication date: May 21, 2015
    Inventors: Goran ALMKVIST, Jonas J. BJORKHOLTZ
  • Patent number: 9033648
    Abstract: A gas turbine engine is disclosed having a vane disposed in a flow path of a gas turbine engine component, for example a gas turbine engine compressor. The vane is in thermal contact with a heat tube that extends through a wall of the engine component and into a space in which a thermal fluid passes. The thermal fluid can be at a different temperature than the vane such that heat is transferred between the two. In one embodiment the vane forms part of an intercooler for a compressor of the gas turbine engine. The vane can have a fin disposed at the end of the heat tube to facilitate a heat transfer.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: May 19, 2015
    Assignee: Rolls-Royce North American Technologies, Inc.
    Inventor: Mark Owen Caswell