With Inspection, Signaling, Indicating Or Measuring Means Patents (Class 415/118)
  • Patent number: 9809303
    Abstract: According to one embodiment, a method for determining a position of a rotor blade includes receiving a plurality of measurements from a plurality of magneto-resistive sensors and determining a position of the at least one magnet based on the received plurality of measurements. In this example, one of the plurality of magneto-resistive sensors and the at least one magnet moves with a rotor blade.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: November 7, 2017
    Assignee: Bell Helicopter Textron Inc.
    Inventor: Troy C. Schank
  • Patent number: 9766159
    Abstract: A fixture 4 for endoscopic inspection is provided with insertion direction regulating portions for regulating an access direction of an insertion portion of an endoscope fixed to an access port for an endoscope of an engine and connecting an external access port disposed on an exterior cover of the engine to an internal access port disposed on an exterior shroud of the engine and an installation direction regulating portion for uniquely regulating an installation direction so that the insertion direction regulating portions match the access direction at a time of attachment to the external access port.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: September 19, 2017
    Assignee: OLYMPUS CORPORATION
    Inventors: Yutaka Konomura, Eiichi Kobayashi, Fumio Hori
  • Patent number: 9765649
    Abstract: A borescope inspection (BSI) port fitting is provided for a gas turbine engine. The borescope inspection (BSI) port fitting includes a housing with a borescope inspection port.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: September 19, 2017
    Assignee: United Technologies Corporation
    Inventors: Ryan K. Snyder, Michael Dreher
  • Patent number: 9732628
    Abstract: A mid-turbine frame for a gas turbine engine includes an inner frame case. A bearing support member is located adjacent the inner frame case. At least one spoke is attached to the inner frame case. A passage extends through at least one spoke, the inner frame case, and the bearing support member.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: August 15, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Anthony P. Cherolis, Joshua Daniel Winn, Jonathan Lemoine
  • Patent number: 9708933
    Abstract: The present disclosure relates to plug assemblies within a gas turbine engine. In one embodiment, a plug assembly includes a boss which includes a shaft and a collar, a retaining element including at least two prongs, and a plug including a shank and at least one retaining feature. The at least two prongs of the retaining element are configured to retain the plug to the boss.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: July 18, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Dale William Petty
  • Patent number: 9683553
    Abstract: Systems and methods for monitoring wind turbine loading are provided. In one embodiment, a system includes a main shaft, a bedplate, and a gearbox coupled to the main shaft and mounted to the bedplate. The gearbox includes an outer casing and a torque arm extending from the outer casing. The system further includes an isolation mount coupled to the torque arm, and a sensor configured to measure displacement of the torque arm. In another embodiment, a method includes operating the wind turbine, and detecting displacement of a torque arm of a gearbox of the wind turbine. The method further includes calculating a moment for a main shaft of the wind turbine based on the displacement of the torque arm.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: June 20, 2017
    Assignee: General Electric Company
    Inventors: Dale Robert Mashtare, James Henry Madge, Charudatta Subhash Mehendale, George Albert Goller, Conner B. Shane
  • Patent number: 9631955
    Abstract: Sensor assemblies and methods of assembling and using the sensor assemblies are provided for monitoring operational characteristics of subsea rotating devices such as subsea motors and pumps. Pressure-compensated proximity sensor tip assemblies configured to withstand subsea pressures are mounted adjacent a subsea rotating shaft for directly monitoring a position of the rotating shaft during dynamic operation thereof. An end of a sensor housing opposite a sensor tip assembly is mounted to a wall of the device housing. The sensor housing defines a fluid reservoir containing a substantially incompressible fluid therein that is in fluid communication with the interior portions of the proximity sensor tip assembly. A length of the sensor housing is adjusted to accommodate a distance between the wall of the device housing and the rotating shaft.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: April 25, 2017
    Assignee: General Electric Company
    Inventors: Lam Arthur Campbell, Dan Tho Lu, Svein Arild Haugen, Jens Abrahamsen
  • Patent number: 9617977
    Abstract: The present invention relates to a method for controlling a wind turbine comprising a pitch of one or more blades and collecting first data indicative of a dynamic condition of the first wind turbine blade and a rotor, the first data comprising rotor data and first deflection data, the rotor data indicative of the azimuth position and rotational velocity of the rotor in a rotor plane perpendicular to the rotor axis, and the first deflection data indicative of the position, speed and acceleration of one or more parts of the first wind turbine blade. The method comprises calculating an expected tower clearance distance at a later time of tower passage for the first blade based on the first data including acceleration of one or more parts of the first blade, and performing measures to prevent tower collision, if the expected tower clearance distance fulfills a collision risk criterion.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: April 11, 2017
    Assignee: LM WIND POWER A/S
    Inventor: Mark Olaf Slot
  • Patent number: 9605654
    Abstract: A method of operating at least one wind turbine is described, comprising: determining a plurality of stress events of at least one component of the at least one wind turbine; determining at least one accumulated stress from at least two of the plurality of stress events; determining at least one residual lifetime based at least partially on the at least one accumulated stress.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: March 28, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventor: Anders Wickström
  • Patent number: 9590537
    Abstract: Embodiments of the invention provide a variable frequency drive system and a method of detecting a ground in a system having a pump driven by a motor. The drive system and method can provide one or more of the following: a sleep mode, pipe break detection, a line fill mode, an automatic start mode, dry run protection, an electromagnetic interference filter compatible with a ground fault circuit interrupter, two-wire and three-wire and three-phase motor compatibility, a simple start-up process, automatic password protection, a pump out mode, digital input/output terminals, and removable input and output power terminal blocks.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: March 7, 2017
    Assignee: Pentair Flow Technologies, LLC
    Inventors: Micheal Robert Pasche, Gary Thomas Baase, II, William James Genaw
  • Patent number: 9512737
    Abstract: A standardized inspection port system with common inspection port bodies and port plugs are incorporated in plural inspection locations within a gas turbine engine casing to facilitate internal engine inspection. The inspection ports preferably have identical internal diameter, stub flange dimensions and axial length from the gas turbine casing inspection seat to the stub flange for standardized mounting of inspection instruments at different locations about the turbine. The inspection port system components are preferably axially and radially aligned along the turbine casing for establishing a common reference position along all turbine blade/vane rows. The port plug incorporates a magnetically attractive pole piece for concentration or redirection of an attractive magnetic field circuit generated by an inspection port plug service tool during plug insertion or retrieval.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: December 6, 2016
    Assignee: Siemens Energy, Inc.
    Inventors: Clifford Hatcher, Jr., James P. Williams
  • Patent number: 9500088
    Abstract: The present invention relates to a blade rim segment for a turbomachine with at least one shroud band which extends along a segment of a circle and is connected in single-piece fashion with at least three blades, which extend radially from the shroud band and are configured to be hollow with at least one channel, wherein the blade rim segment is manufactured in a single piece by casting and directional solidification, and wherein at the outlet openings of the channels of the blades, the shroud band exhibits first reinforcement ribs that surround the opening and run axially, as well as at least one second reinforcement rib between at least the first reinforcement ribs, as well as a corresponding method for manufacturing a blade rim segment.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: November 22, 2016
    Assignee: MTU AERO ENGINES AG
    Inventors: Markus Schlemmer, Marcin Rozak, Alexander Buck
  • Patent number: 9494052
    Abstract: A borescope plug configuration is disclosed. The borescope plug configuration comprises an inspection path defined through a bore in a first engine structure, a second engine structure, and an opening into the gas path of an engine. The borescope plug configuration further comprises a removable plug for sealing the inspection path. The removable plug is adapted to couple the first engine structure to the second engine structure.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: November 15, 2016
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: David T. Feindel, Jorge I. Farah
  • Patent number: 9459123
    Abstract: The invention comprises a vibration probe protection apparatus and method of use thereof. The sensor protection system dynamically moves the probe away from the shaft in response to radial movement of the shaft and subsequently repositions the sensor probe at a set distance from the rotating shaft. The sensor protection system optionally: (1) positions a protective element closer to the shaft than a tip of the probe, where radial movement of the shaft strikes the protective element and the protective element uses a portion of the resulting striking force to move the probe away from the shaft; (2) resists bounce of the probe upon delivery of force from movement of the shaft to the protective element; and/or (3) provides a return spring force to the probe tip toward the shaft to reposition the probe against a hard stop.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: October 4, 2016
    Inventor: Roger Morris
  • Patent number: 9297308
    Abstract: A gas turbine according to the invention includes a seal housing in which a leaf-shaped seal is provided and a detection end space, a gas introduction path, and a gas discharge path are also formed. The detection end space is formed at a position on the outside in a radial direction from a leaf-shaped seal, and the gas introduction path has an introduction port formed at a position further on the downstream side than the leaf-shaped seal and also has a radially extending portion extending toward the outside in the radial direction from the introduction port and an axially extending portion extending in the direction of an axis from an end portion of the radially extending portion and reaching the detection end space.
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: March 29, 2016
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Eiichi Tsutsumi, Kenichi Arase
  • Patent number: 9261355
    Abstract: This disclosure relates to a device for optically measuring the curvature of a rotor blade (18) of a wind power plant (1). The rotor blade is fixed at the blade root (23) to a rotor hub (8) or a rotor (6). The device includes at least one light-emitting external marking (33) fixed to the rotor blade (18) at a distance from the blade root (23), at least one camera (27) fixed to the rotor (6) for capturing the light (35) emitted from the external marking (33). The device provides first location information as a function of the relative position of the camera (27) with respect to the external marking (33). An evaluating device (37) is coupled to the camera (27), and a position detection means detects the relative location of the camera (27) with respect to the blade root (23) and provides second location information as a function of said relative location. The evaluating device (37) determines at least one variable characterizing the curvature of the rotor blade (18) while evaluating the position information.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: February 16, 2016
    Assignee: SSB Wind Systems GmbH & Co. KG
    Inventor: Fabio Bertolotti
  • Patent number: 9062687
    Abstract: An axial compressor includes a rotor, a stator, and a blade attached to the stator at a base section and linked to a ferrule at a section opposing the base section, the ferrule being supported solely by the blade. The rotor is configured to rotate within the stator and the ferrule is configured to extend around a periphery of the rotor.
    Type: Grant
    Filed: January 27, 2014
    Date of Patent: June 23, 2015
    Assignee: Techspace Aero S.A.
    Inventor: Jean-Francois Cortequisse
  • Publication number: 20150147159
    Abstract: A casing arrangement of a gas turbine includes a sensor element of elongated design that when seen in the longitudinal direction has a front end and a rear end, a first casing structure, a second casing structure arranged at a distance from the first casing structure and having a receptacle for the front end of the sensor element, and a guide structure having an elongated guide opening for the sensor element. The sensor element extends between the first casing structure and the second casing structure, while being arranged along a section in the elongated guide opening of the guide structure, where the sensor element due to the elongated guide opening is aligned and positioned such that its front end is located, and can only be located, inside the receptacle of the second casing structure.
    Type: Application
    Filed: November 20, 2014
    Publication date: May 28, 2015
    Inventor: Christian HOMEYER
  • Publication number: 20150145253
    Abstract: The invention is a method for controlling and/or monitoring a wind turbine 1 equipped with a LIDAR sensor 2. Control and/or monitoring provides an estimation of the wind speed at the rotor obtained an estimator and a LIDAR sensor 2. The estimator of the wind speed at the rotor is constructed from a representation of the wind, a model of the LIDAR sensor and a wind propagation model.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 28, 2015
    Inventors: Benoit BAYON, Jonathan CHAUVIN
  • Publication number: 20150132108
    Abstract: An edge detector is provided for determining the axial position of the leading or trailing edge of a rotating blade within rotating machinery. The edge detector includes a set of axially spaced tip detection probes locatable within a casing of the machinery. Each probe is arranged to detect whether or not the blade tip passes over that probe. The edge detector determines the axial position of the edge of the blade as the position of the boundary between those tip detection probes which detect passage of the blade tip thereover and those tip detection probes which detect no passage of the blade tip thereover.
    Type: Application
    Filed: November 4, 2014
    Publication date: May 14, 2015
    Inventor: Alan Richard JONES
  • Publication number: 20150132102
    Abstract: Apparatus and method for determining a two-dimensional temperature distribution in a cross-sectional path of a hot-temperature flow in a turbine engine (10). A grid (22, 24, 38) is located in a path of a hot-temperature flow in the turbine engine. A thermal imager (34) has a field of view configured to sense infrared emissions from the grid. A processor (50) is configured to generate data indicative of a two-dimensional temperature distribution in a cross-sectional path of the flow based on the sensed infrared emissions.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 14, 2015
    Inventors: Dennis H. Lemieux, Vinay Jonnalagadda, Paul J. Zombo
  • Publication number: 20150125267
    Abstract: A standardized inspection port system with common inspection port bodies and port plugs are incorporated in plural inspection locations within a gas turbine engine casing to facilitate internal engine inspection. The inspection ports preferably have identical internal diameter, stub flange dimensions and axial length from the gas turbine casing inspection seat to the stub flange for standardized mounting of inspection instruments at different locations about the turbine. The inspection port system components are preferably axially and radially aligned along the turbine casing for establishing a common reference position along all turbine blade/vane rows. The port plug incorporates a magnetically attractive pole piece for concentration or redirection of an attractive magnetic field circuit generated by an inspection port plug service tool during plug insertion or retrieval.
    Type: Application
    Filed: November 4, 2013
    Publication date: May 7, 2015
    Inventors: Clifford Hatcher, JR., James P. Williams
  • Publication number: 20150110602
    Abstract: The invention relates to an instrumented airfoil for mounting in a flow passage through a turbine, compressor, or module of a turbine engine. An instrumentation member is attached to an airfoil and includes information-obtaining means received in a cutout formed in the airfoil and projecting relative to the leading edge or the trailing edge. According to the invention, the instrumentation member also comprises a holder portion that is united with the information-obtaining means and that is attached to the cutout in such a manner that its surface is in alignment respectively with the suction side wall, the pressure side wall, and the leading edge or the trailing edge of the airfoil, the transitions between these respective surfaces not presenting any setbacks.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 23, 2015
    Applicant: SNECMA
    Inventors: Gabrijel RADELJAK, Pascal COUHIER, Benedicte LELEU, Frederic Raymond Jean MIROUDOT, Sebastien HAMEAU, Antoine Jean JAUSOVEC
  • Patent number: 9014460
    Abstract: Apparatus (12) to measure blade vibration in a gas turbine engine (8). An illumination source (20) generates a sequence of illumination bursts in a field of view capturing a passing rotating blade (10) of the gas turbine engine. An imager (22) generates image data including a series of images capturing views of the passing rotating blade. The images are exposed in response to respective illumination bursts. A controller (30) is configured to process the series of images to identify one or more vibration modes of the rotating blade.
    Type: Grant
    Filed: November 7, 2011
    Date of Patent: April 21, 2015
    Assignee: Siemens Energy, Inc.
    Inventor: Michael Twerdochlib
  • Publication number: 20150104291
    Abstract: A seal assembly for sealing a fluid passageway from contaminants is disclosed. The fluid passageway is formed by a rotating shaft entering an opening in a housing. The fluid passageway connects an interior of the housing, and any exterior of the housing. The seal assembly includes a first sealing member and a second sealing member, which divides the fluid passage into an interior section, an open section, and a sealed section. The interior section is exposed to the interior of the housing. The sealed section is fluidly sealed between the interior section and the open section. A sensor is disposed within the sealed section. The sensor is configured to sense the contaminants within the sealed section and is electronically coupled to a controller configured to send an alarm signal. The sensor is a moisture sensor and extends into an annular recess formed in the stationary member.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 16, 2015
    Inventors: Randy J. Kosmicki, Michael L. Viken
  • Patent number: 8998569
    Abstract: A gas turbine engine includes a gas turbine engine internal compartment structure having an integral passageway. Wiring is routed through the integral passageway of the gas turbine engine internal compartment structure.
    Type: Grant
    Filed: August 17, 2011
    Date of Patent: April 7, 2015
    Assignee: United Technologies Corporation
    Inventor: Russell B. Witlicki
  • Patent number: 8998568
    Abstract: A turbine is provided and includes a rotor, which is rotatable about a centerline thereof, a sensor to measure a condition at a point of measurement interest defined on the rotor at a radial distance from the centerline, a communication system by which condition measurements are transmittable from the sensor to a non-rotating recording system and a probe holder to secure the sensor and a portion of the communication system on the rotor proximate to the point of measurement interest.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: April 7, 2015
    Assignee: General Electric Company
    Inventors: Kurt Kramer Schleif, Gregory Quentin Brown, Philip Michael Caruso, Fernando Jorge Casanova, Seung-Woo Choi, Josef Scott Cummins, Matthew Ryan Ferslew, Andrew Clifford Hart, Robert David Jones, Jong Youn Pak, Francesco Soranna
  • Publication number: 20150086334
    Abstract: A device and method for precise measurement of erosion of compressors, without removing an engine, and with easy positioning. A centrifugal compressor of a gas turbine with a radial air inlet includes an impeller including blades and a casing for an air stream to flow in the blades of the impeller. The casing, covered with an abradable coating, includes an annular elbow zone in a substantially median part. Marking depressions of predetermined depths, preferably in groups, are machined in the abradable coating of the zone. Examinations by endoscopy are successively performed to provide an image signal of the markers. Processing the endoscopic signal supplies a number of remaining markers and a criterion for decision on removing the engine is applied thereto. Erosion occurs in the elbow of the casing and evolution thereof may enable monitoring of erosion of other components of the compressor, in particular the blades of the impeller.
    Type: Application
    Filed: September 27, 2012
    Publication date: March 26, 2015
    Applicant: TURBOMECA
    Inventors: Paul-Etienne Jactat, Pascal Lebrusq, Jerome Sarramea, Lionel Scuiller
  • Publication number: 20150044020
    Abstract: A method for avoiding pump surges in a compressor is provided, wherein a plurality of parameters of the compressor are monitored during operation and a desired value range for the plurality of parameters is predetermined, wherein a reaction that counteracts the pump surge is triggered if a number of parameters from the desired value range are exceeded or fallen below. The method also reliably prevents pumping of the compressor during a comparatively high running performance. For this purpose, the plurality of parameters has a parameter assigned to the rotational noise of the compressor.
    Type: Application
    Filed: December 12, 2012
    Publication date: February 12, 2015
    Applicant: Siemens Aktiengesellschaft
    Inventor: Claus Grewe
  • Publication number: 20150040581
    Abstract: A borescope assembly includes a first borescope plug comprising a first perimeter geometry portion. Also included is a second borescope plug comprising a second perimeter geometry portion distinct from the first perimeter geometry portion. Further included is a first borescope hole comprising a first hole geometry portion corresponding to the first perimeter geometry portion of the first borescope plug. Yet further included is a second borescope hole comprising a second hole geometry portion corresponding to the second perimeter geometry portion of the second borescope plug.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 12, 2015
    Applicant: General Electric Company
    Inventor: Kenneth Damon Black
  • Publication number: 20150030433
    Abstract: An apparatus for measuring turbine rotor-to-stator clearances and a method for assembling a turbomachine based on the measured clearances are disclosed. In an embodiment, at least one clearance sensor is inserted into a stator of a turbomachine. Using the sensor, tops-on clearance between a rotor blade tip and an inner surface of a stator is measured while an upper stator shell, a rotor, a lower stator shell are assembled together; and a tops-off clearance is measured while the lower stator shell and a rotor are assembled together. A tops-on/tops-off shift, i.e., a difference between the tops-on clearance and the tops-off clearance, is determined. The turbine can be assembled by adjusting a relative position of the rotor and stator to account for the tops-on/tops-off shift.
    Type: Application
    Filed: September 24, 2014
    Publication date: January 29, 2015
    Inventor: Fred Thomas Willett, JR.
  • Patent number: 8939709
    Abstract: A system for operating a turbine includes a rotating component and a non-rotating component separated from the rotating component by a clearance. A first actuator is connected to the non-rotating component, and the first actuator comprises a shape-memory alloy. A method for operating a turbine includes sensing a parameter reflective of a clearance between a non-rotating component and a rotating component and generating a parameter signal reflective of the clearance. The method further includes generating a control signal to at least one actuator based on the parameter signal and moving at least a portion of the non-rotating component relative to the rotating component to change the clearance.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: January 27, 2015
    Assignee: General Electric Company
    Inventors: Biju Nanukuttan, Rakesh Adoor, Hariharan Sundaram, James Adaickalasamy, Prasad Punna
  • Publication number: 20150016949
    Abstract: A method of controlling tip clearance of rotor blades from a surrounding casing in a gas turbine engine. The method comprising the steps of performing a first run of the gas turbine engine, shutting down the gas turbine engine and starting the gas turbine engine for a second run. The method further comprises measuring at least one performance parameter during or after the first engine run but before a time selected at which air within the gas turbine engine, soaked to the approximate temperature of one or more surrounding engine components, is substantially displaced as a consequence of the second run. The thermal condition of at least part of the engine in accordance with the measured performance parameters is then recorded. Finally the recorded thermal condition is retrieved and the temperature of the casing is controlled during at least part of the second run in a manner dependent on it.
    Type: Application
    Filed: June 16, 2014
    Publication date: January 15, 2015
    Inventor: Marcus Donegan Wood SMITH
  • Publication number: 20150010386
    Abstract: Systems and devices configured to determine misalignment of targets of a rotating shaft by monitoring axial and radial aspects of targets and the shaft. In one embodiment, a target monitoring system includes a first horizontal probe communicatively connected to at least one first horizontal target connected to the shaft, and a first axial probe located adjacent to the first horizontal probe and communicatively connected to the first horizontal target. The system also includes a second horizontal probe communicatively connected to at least one second horizontal target connected to the shaft, and a second axial probe located adjacent to the second horizontal probe and communicatively connected to the second horizontal target. The system may further include an end probe disposed proximate a first end of the shaft for monitoring axial movement of the shaft, and a computing device communicatively connected to the end probe and each horizontal and axial probe.
    Type: Application
    Filed: July 3, 2013
    Publication date: January 8, 2015
    Inventors: Peter Ping-Liang Sue, Lawrence Brown Farr, II, Andrea Booher Kretschmar
  • Patent number: 8926284
    Abstract: An assembly for the removal of contaminants from a contact zone between respective contact surfaces 6, 8 of a first component 2 and a second component 4. At least one of the contact surfaces has a low friction element 10 provided with grooves 12 which extend through the contact zone such that, in operation, a pressure difference across the contact zone causes contaminants entering the grooves 12 to be expelled along the grooves 12 from the contact zone.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: January 6, 2015
    Assignee: Rolls-Royce PLC
    Inventors: Stephen J. Dimelow, Ian C. D. Care
  • Publication number: 20150003965
    Abstract: A turbomachine having a rotor is provided, wherein the rotor comprises a central holding element and rotor elements which are arranged thereon, is intended to permit faster start-up without reducing the lifetime of the rotor, while permitting better predictions relating to the remaining lifetime of the rotor. To this end, a contact element is arranged in a region of the rotor between the holding element and the rotor element, wherein the contact element comprises a temperature measurement device.
    Type: Application
    Filed: August 2, 2012
    Publication date: January 1, 2015
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Guido Ahaus, Ingo Balkowski, Patrick Ronald Flohr, Waldemar Heckel, Harald Hoell, Christian Lyko, Oliver Ricken, Uwe Sieber, Sebastian Stock, Vyacheslav Veitsman, Frank Woditschka
  • Publication number: 20150000247
    Abstract: A system for detecting airfoil clashing within a compressor comprises a compressor having a row of rotor blades and an adjacent row of stator vanes, an acoustic emission detection system that generates an acoustic emissions signal, a rotor blade monitoring system that generates a blade pass signal, and a processing unit that is in electronic communication with the acoustic emission detection system and the rotor blade monitoring system. The processing unit is configured to fuse the acoustic emissions signal with the blade pass signal to provide a combined signal that is indicative of an airfoil clashing event between the rotor blades and the adjacent row of stator vanes.
    Type: Application
    Filed: July 1, 2013
    Publication date: January 1, 2015
    Inventor: Achalesh Kumar Pandey
  • Publication number: 20140369813
    Abstract: A fan motor control unit includes sensor units that each detect a rotational position of the fan motor, a switching unit that selectively connects each of stator coils of the fan motor to a rectifier circuit, a current sensor that detects a current flowing in the fan motor, and a switching control unit that advances, in the case where the current detected by the current sensor exceeds a threshold, a energization timing from the rectifier circuit to the stator coils with respect to the energization timing applied while the current detected by the current sensor is lower than the threshold, on the basis of the rotational position detected by the sensor units.
    Type: Application
    Filed: June 11, 2014
    Publication date: December 18, 2014
    Inventors: Yo Muramatsu, Takahisa Toda, Kenta Nishimaki
  • Publication number: 20140369805
    Abstract: An air conditioner for determining whether a human body exists in a sensing region using a plurality of heat sensors, as human body-detecting sensors, installed in the air conditioner and arranged at regular intervals. The air conditioner recognizing, when a human body has been detected, angles formed between the human body-detecting sensors and the human body, and calculating a distance from the human body-detecting sensors to the human body based on the recognized angles and a distance between the human body-detecting sensors, and adjusting a direction and speed of wind according to the calculated distance to the human body, and a control method of the air conditioner. Also, the air conditioner may be used as a security sensor when it does not operate.
    Type: Application
    Filed: June 12, 2014
    Publication date: December 18, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Seong Man PARK
  • Publication number: 20140363274
    Abstract: A method of analysing blade tip timing data obtained from an array (Pk) of stationary timing probes (3) that are spaced at integer multiples of a base angle. Replace one of the probes (3) with a virtual probe (Pv) to give a virtual probe set (42). Set an initial probe angle (?v) and an initial engine order (EOv) for the virtual probe (Pv). Calculate the condition number (CN) for the virtual probe set (42). If the condition number (CN) at least meets a threshold criterion, solve the virtual probe set (42) for blade tip displacement amplitude. Else increment the virtual probe angle (?v) and/or the virtual engine order and iterate from calculating the condition number. Else reinstate the replaced probe (3) and replace a different probe (3) from the array of probes (Pk) with the virtual probe (Pv); then iterate from setting the initial virtual probe angle and engine order.
    Type: Application
    Filed: March 25, 2014
    Publication date: December 11, 2014
    Applicant: ROLLS-ROYCE PLC
    Inventor: Olivier Y. J. P. JOUSSELIN
  • Publication number: 20140363275
    Abstract: A force generating device, including: a cup member, fan blades, and a calculus member for calculating the pressure. The cup member includes a recess and a suction inlet. The suction inlet is disposed at the bottom surface of the cup member. The fan blades are disposed inside the recess of the cup member. Air is sucked into the recess from the suction inlet and produces a swirl therein by rotation of the fan blades. The calculus member calculates the pressure according to the equation: Pi(r)=½·?·r2·?2+C, in which, r represents the distance between a point inside the chamber of the recess of the cup member and the revolving center of the fan blades, Pi(r) represents a pressure at the point, ? represents the density of the air, ? represents an angular velocity of the swirl, and C represents a coefficient.
    Type: Application
    Filed: August 26, 2014
    Publication date: December 11, 2014
    Inventor: Xin LI
  • Patent number: 8905705
    Abstract: An omni-directional air flow device, for example, a fan or a vent associated with a fan, comprises a swivel control point providing almost a spherical range of motion of the air flow device so that air may flow in any direction. The omni-directional air flow device may comprise a user input device for receiving a program for controlling movement of the air flow device through a pre-determined path within the spherical range of motion and for controlling air flow velocity as the air flow device follows the pre-determined path. Moreover, the device may further comprise a controller and memory for storing data representing the pre-determined path and varying air flow velocities along the path. When provided with temperature and humidity sensors coupled to the processor, the processor may calculate a comfort index and adjust the pre-determined path or air flow velocity accordingly.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: December 9, 2014
    Inventor: Norial P. Bain
  • Publication number: 20140356132
    Abstract: The invention relates to a device for measuring vibration amplitudes of the blade tips in a turbomachine, comprising a support mounted in an orifice of a casing of a turbomachine and wherein are housed two optical guides for the emission and reception of a light signal exiting inside the casing across from the tips of the blades of a turbine wheel. Each optical guide comprises an optical fibre connected by a mechanical connector to a needle of which the core is made of a material able to transmit a light signal and which is resistant to temperatures less than or equal to 1100° C. and which exits at its distal end in the casing across from the blade tips.
    Type: Application
    Filed: May 7, 2013
    Publication date: December 4, 2014
    Applicant: SNECMA
    Inventor: SNECMA
  • Publication number: 20140356133
    Abstract: A fan power supply control system includes a power supply module, a power control circuit, a signal control circuit, a PWM generator. The power supply is adapted to input a power signal to a fan. The power control circuit is between the power supply module and the fan and adapted to connect or disconnect the power supply module to the fan. The signal control circuit is connected the power supply module to the power control circuit and adapted to switch on or off the power control circuit. The PWM generator is adapted to generate a predetermined cycle square signal according to the power signal, to intermittently switch on or off the signal control circuit, and a switch on/off state of the power control circuit is synchronous with the signal control circuit.
    Type: Application
    Filed: February 13, 2014
    Publication date: December 4, 2014
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
    Inventors: WEI-GUO PAN, DUN-HONG CHENG, XIAO-GANG LI, MAO-CHANG LI
  • Patent number: 8899908
    Abstract: The disclosure refers to a method and apparatus for checking the bearing alignment of a rotor of a gas turbine or steam turbine having a rotor with a radial offset and a radial offset surface and in a bearing shell, which supports the rotor, with a radial, at least in sections, end surface, wherein the radial offset surface and the radial end surface face the free end of the rotor. The radial offset is arranged in the bearing shell and offset towards the free end of the rotor. The degree of offset in the axial direction with regard to the rotor is measured at least two different circumferential positions around the rotor periphery in order to determine the alignment of the rotor. Differences in the degree of offset at different circumferential positions are used as measurement for the bearing alignment.
    Type: Grant
    Filed: June 17, 2011
    Date of Patent: December 2, 2014
    Assignee: Alstom Technology Ltd.
    Inventors: Eduard Brühwiler, Marc Rauch
  • Patent number: 8899920
    Abstract: A wind turbine yaw system is provided that includes a yaw gear, at least two pinion gears, and at least two drive units, each of which is associated to one of the pinion gears for driving that pinion gear. The yaw system also includes a control system with a controller for generating a drive unit control signal for each drive unit for controlling the respective drive unit according to a reference signal having a desired operational parameter value for the respective drive unit, so as to realize the desired operational parameter value in the respective drive unit. The control system includes a feedback loop for each drive unit feeding a drive unit feedback signal including at least the actual value of one operational parameter of the respective drive unit back to the controller. The controller generates the drive unit control signals based on the reference signal and the feedback signals.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: December 2, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventor: Kurt Andersen
  • Patent number: 8899911
    Abstract: The invention provides a heat-dissipating system and a control method thereof. The heat-dissipating system has a plurality of fans and is configured for adjusting rotation-speeds of the fans. The control method includes following steps: obtaining a plurality of rotation-speed values of the fans; computing out a rotation-speed reference value according to the rotation-speed values; when the rotation-speed reference value is greater than a first threshold value, decreasing the rotation-speeds of the fans through a corresponding fan control signal; when the rotation-speed reference value is less than a second threshold value, increasing the rotation-speeds of the fans through the corresponding fan control signal.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: December 2, 2014
    Assignee: Coretronic Corporation
    Inventors: Chih-Cheng Chou, Wen-Hsien Su, Tsung-Ching Lin, Chao-Nan Chien
  • Publication number: 20140348631
    Abstract: A turbomachine stage, particularly a turbine stage or a compressor stage of a gas turbine, is disclosed. The turbomachine stage has a, conical in particular, housing in which is arranged a moving vane arrangement with multiple moving vanes which have an exterior shroud band with at least one radial sealing flange. The sealing flange has a recess arrangement with at least one radial recess in which, centrally in particular, a radial projection is arranged. There is arranged on the housing a sensor arrangement with at least one capacitive sensor for detecting a radial clearance to a peripheral surface of the sealing flange.
    Type: Application
    Filed: May 21, 2014
    Publication date: November 27, 2014
    Applicant: MTU Aero Engines AG
    Inventors: Florian GERBL, Juergen Gruendmayer, Martin Stadlbauer, Ernst Trassl
  • Publication number: 20140348632
    Abstract: A turbomachine stage, in particular a turbine stage or compressor stage of a gas turbine, is disclosed. The turbomachine stage has a, in particular conical, housing in which a rotor blade arrangement having a plurality of rotor blades is disposed which have an outer shroud having at least one radial sealing flange. The sealing flange has a recess arrangement having at least one radial recess in which a radial projection is disposed, in particular centrally. A sensor arrangement having at least one capacitive sensor for detecting a radial distance from a circumferential surface of the sealing flange is disposed on the housing.
    Type: Application
    Filed: May 21, 2014
    Publication date: November 27, 2014
    Applicant: MTU Aero Engines AG
    Inventors: Michael Zielinski, Andreas Zeisberger, Rene Schneider
  • Patent number: 8888442
    Abstract: A turbine vane ring has radially outer and inner annular shrouds defining therebetween an annular gaspath. Circumferentially spaced-apart airfoil vanes extend radially across the gaspath between the outer and the inner shrouds. The radially outer shroud has a circumferentially continuous cylindrical wall extending axially from a leading edge to a trailing edge. A set of circumferentially distributed stress relieving slots is defined in the leading edge of the cylindrical wall at locations adjacent to the leading edge of at least some of said airfoil vanes. The stress relieving slots extend radially through the cylindrical wall from the radially inner surface to the opposed radially outer surface thereof.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: November 18, 2014
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Keppel Nyron Bharath, John Pietrobon, Vincent Paradis, Douglas MacCaul