Patents Issued in October 11, 2018
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Publication number: 20180291729Abstract: An electromagnetic (EM) telemetry system with telluric referencing for use with downhole equipment is described. Embodiments of an EM telemetry system with telluric referencing include a downhole transceiver comprising an encoded signal transmitter, a downhole sensor disposed to monitor the downhole equipment, the downhole sensor coupled to the transceiver, an encoded signal receiver, a reference receiver spaced apart from the encoded signal receiver and communicatively coupled to the encoded signal receiver, and a telluric voltage module coupled to one of the encoded signal receiver and the reference receiver. The telluric voltage module is communicatively coupled to the encoded signal receiver and the reference receiver to receive an encoded signal and a reference signal, respectively, which may include telluric noise. The telluric voltage module synchronizes the encoded signal and the reference signal, subtracts the reference signal from the encoded signal, and outputs a signal free from telluric noise.Type: ApplicationFiled: August 3, 2016Publication date: October 11, 2018Inventors: Glenn Andrew Wilson, Paul Andrew Cooper
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Publication number: 20180291730Abstract: A method of forming a short-hop communications transceiver includes creating, in a conductive tool body, an annular cavity that is electromagnetically coupled to an external tool surface by a surface gap that encircles the tool body. The method further includes positioning material having high magnetic permeability in the annular cavity. The method further includes coupling electrical leads from an electronics module to opposite sides of the surface gap. The method further includes operating the electronics module to perform short-hop telemetry by driving or sensing a voltage signal across the surface gap.Type: ApplicationFiled: October 28, 2015Publication date: October 11, 2018Applicant: Halliburton Energy Services, Inc.Inventors: Jin Ma, Glenn Andrew Wilson
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Publication number: 20180291731Abstract: A method and system for transmitting information in well operations. The method for transmitting information may comprise splitting a coherent light into a plurality of wavelengths with a demultiplexer within a fiber comb transmitter and encoding information onto at least one of the plurality of wavelengths within the fiber comb transmitted. The method may further comprise combining the plurality of wavelengths into a second coherent light with a wavelength division multiplexer within the fiber comb transmitter and broadcasting the second coherent light from the frequency comb transmitter. A downhole telemetry system may comprise a frequency comb transmitter, which may comprise a laser source and a modulator. The modulator may further comprise a demultiplexer, an encoder, and a wavelength division multiplexer. The frequency comb transmitter may also comprise a fiber optic cable and a frequency comb receiver.Type: ApplicationFiled: November 13, 2015Publication date: October 11, 2018Applicant: Halliburton Energy Services, Inc.Inventors: Daniel Joshua Stark, Satyan Gopal Bhongale
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Publication number: 20180291732Abstract: Memory gauge and method for processing recorded raw data acquired with a memory gauge in a well. The method includes selecting a first calibration table (C1), of the memory gauge, that has a highest calibration value for the measured parameter; performing a first analysis of the recorded raw data using the first calibration table (C1) to determine a highest measured value of the measured parameter; comparing the highest measured value of the measured parameter with highest calibration values of the plural calibration tables of the memory gauge; and when a highest calibration value of a second calibration table is closer to the highest measured value of the measured parameter than the highest calibration value of the first calibration table, selecting the second calibration table (C2); and performing a second analysis of the recorded raw data using the second calibration table (C2) to generate measured values of the measured parameter.Type: ApplicationFiled: April 7, 2017Publication date: October 11, 2018Inventor: Nicolas BRAVARD
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Publication number: 20180291733Abstract: A pressure pulse tool includes a tool housing, a valve disposed in the housing and having first and second valve components that are each rotatable relative to the housing and that cooperate to open and close a fluid flow path through the valve. The tool may include first and second power section coupled to the first and second valve components, respectively, for rotating the respective valve components. The power sections may each include a turbine rotor and the first and second rotors may have different geometries or may be powered by different amounts of fluid flow therethrough. Flowing fluid through the tool generates a pressure pulse having a desired pressure pulse frequency that may be lower than the first or second turbine rotor would generate alone.Type: ApplicationFiled: April 6, 2018Publication date: October 11, 2018Inventors: Sheldon RITCHIE, Chad FEDDEMA, Malcolm GRANT
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Publication number: 20180291734Abstract: An embodiment of a method of estimating one or more properties of an earth formation includes acquiring formation fluid data indicative of a qualitative property of a formation fluid in a near-field region of an earth formation surrounding a borehole, the near field region including a surface of the borehole, and acquiring acoustic data based on acoustic signals transmitted into a far-field region of the formation, and estimating a property of one or more fractures in the far-field region based on the acoustic data. The method also includes combining the formation fluid data and the acoustic data, and estimating, by a processing device, at least one fracture characteristic of the formation in the near-field region and the far-field region based on the combined data.Type: ApplicationFiled: April 10, 2017Publication date: October 11, 2018Applicant: Baker Hughes IncorporatedInventors: Nicklas Ritzmann, Frank Walles, Alex Bruns, David Gadzhimirzaev, Sergey Kotov
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Publication number: 20180291735Abstract: A tool includes an actuator assembly, a rod, a first nut, and a second nut. The actuator assembly includes a cylinder, a ram, and a bore extending through the cylinder and the ram. The cylinder includes an internal chamber supporting the ram, a first end, a second end, and a reaction surface positioned proximate the first end. The ram is movable relative to the cylinder and positioned adjacent the second end of the cylinder. The rod extends through the bore of the actuator assembly. The first nut is selectively coupled to one of a first end of the rod and a second end of the rod, and defines a first dimension larger than the bore width of the bit block. The second nut is selectively coupled to the other of the first end of the rod and the second end of the rod, and defines a second dimension less than the bore width.Type: ApplicationFiled: June 11, 2018Publication date: October 11, 2018Inventors: Michael L. O'Neill, Randy W. Arnold
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Publication number: 20180291736Abstract: A high-strength confined concrete support system for an underground tunnel. The support system includes multiple confined concrete arches, bolts and cables, and a prestressed steel strand backfilling system. The confined concrete arches all support the surrounding rock of the tunnel and are sequentially arranged along the tunnel. Every two adjacent confined concrete arches are connected by a longitudinal connection structure. The support system is provided with a plurality of layers of steel bar meshes on the surrounding rock side and the tunnel side, and shotcrete layers are sprayed on the support system and the steel bar meshes. The prestressed steel strand backfilling system comprises a prestressed steel strand system and a filling material. The filling material fills the space between each confined concrete arch and the surrounding rock to equalize a load on the confined concrete arch and generate prestress.Type: ApplicationFiled: December 22, 2016Publication date: October 11, 2018Applicants: SHANDONG UNIVERSITY, SHANDONG TIANQIN MINING MACHINERY EQUIPMENT CO. LTD.Inventors: Shucai LI, Qi WANG, Bei JIANG, Yingcheng LUAN, Qian QIN, Huibin SUN, Hengchang YU, Zhaonan ZENG
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Publication number: 20180291737Abstract: A rock bolt assembly includes a rock bolt with an elongate body between distal and proximal ends, a tubular sleeve with first and second ends, proximal and distal ends of the bolt projecting from first and second ends of the sleeve, a load bearing barrel centrally bored to engage the rock bolt between the sleeve's first end and the bolt's proximal end, which barrel is adapted at a forward end to engage with the sleeve's second end in sealing contact, and which barrel has at least one grout conduit between the barrel's exterior surface and the bore, which at least one conduit defines a part of a grout passage which communicates the exterior surface of the barrel with an interior of the sleeve, when the barrel is engaged with the sleeve, and a seal which seals the grout passage to grout outflow but accommodates inflow of grout from a source.Type: ApplicationFiled: June 23, 2016Publication date: October 11, 2018Inventors: Paolo Ettore PASTORINO, Adrian BERGHORST
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Publication number: 20180291738Abstract: The present invention is a manually bendable rebar bolt for use in ground reinforcement, particularly in mining operations. The rebar bolt is a steel rod having a length and a width. The cross-sectional area of the bolt taken along the width generally perpendicular to said length has a long axis and a short axis. The bendable rebar bolt can be manually bent in a direction generally perpendicular to said long axis.Type: ApplicationFiled: March 6, 2018Publication date: October 11, 2018Inventors: Anand Bhagwat, Stephen C. Tadolini
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Publication number: 20180291739Abstract: A fluid spray for an underground roof support includes a first housing portion, a spray outlet, a second housing portion formed integrally with the first housing portion, and a service port. The first housing portion includes an elongated shaft having a first end, a second end, and a first fluid passage extending between the first end and the second end. The spray outlet is positioned adjacent the second end of the shaft. The second housing portion is positioned adjacent the first end of the shaft. The second housing portion includes at least one port and a second fluid passage between the at least one port and the first fluid passage. The service port is aligned with the first fluid passage, and the service port is selectively opened to provide access to the first fluid passage from the first end of the first housing portion.Type: ApplicationFiled: June 12, 2018Publication date: October 11, 2018Inventor: Andrew G. Fairhurst
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Publication number: 20180291740Abstract: A rotary machine, for directing a quantity of fluid from an inlet to an outlet, comprises one or more elliptical or near-elliptical rotors having planetary rotation within a housing. The interior cavity of the housing comprises an inverse apex region that is in contact with the rotor during its rotation. In various embodiments the rotor and housing can be symmetric or asymmetric in cross-section. Features are described that can improve the operation of the machine for various end-use applications. Such features include cut-outs that are fluidly connected to the inlet or outlet ports of the machine, mechanisms for reducing variation in output flow rate from the rotary machine, linings for the interior cavity of the housing, pressure relief mechanisms, dynamic apex seals and other sealing mechanisms.Type: ApplicationFiled: March 16, 2018Publication date: October 11, 2018Inventor: Greg John Montie
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Publication number: 20180291741Abstract: Disclosed is a reaction-type steam turbine, including: a housing provided at a first side thereof with a steam inlet tube and at a second side thereof with a steam outlet tube, the housing having a space formed therein; and a turbine shaft provided to pass through the space of the housing, with a plurality of disk blades fitted over the turbine shaft, wherein a guide blade assembly is coupled to the turbine shaft at a position between a duct of the steam inlet tube and the disk blades, the guide blade assembly guiding steam introduced through the steam inlet tube into the space of the housing toward the disk blades.Type: ApplicationFiled: June 14, 2018Publication date: October 11, 2018Applicant: POSCO ENERGY CO., LTD.Inventors: Jeajun Lee, Sanghoon Lee, Sung Keun Oh, Sangmyeong Lee, Juchang Lim
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Publication number: 20180291742Abstract: An airfoil assembly for a turbine engine can comprise a platform having first and second opposing surfaces, an airfoil extending from the first surface, a base extending from the second surface, and a platform cooling circuit including a feed tube, a first branch, a second branch, and a flow divider.Type: ApplicationFiled: April 7, 2017Publication date: October 11, 2018Inventors: James Michael Hoffman, Weston Nolan Dooley, Aaron Ezekiel Smith, Steven Robert Brassfield
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Publication number: 20180291743Abstract: A turbine engine can include an airfoil comprising an outer wall bounding an interior, as well as an airfoil cooling circuit located within the interior and including a feed tube separating into at least first and second branches. A flow divider can be included in the airfoil and positioned to confront the feed tube.Type: ApplicationFiled: April 7, 2017Publication date: October 11, 2018Inventors: James Michael Hoffman, Weston Nolan Dooley, Matthew Lee Krumanaker, Aaron Ezekiel Smith, Steven Robert Brassfield
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Publication number: 20180291744Abstract: An airfoil may comprise a root and an airfoil body radially outward of the root. The airfoil body may define a first cooling chamber and a second cooling chamber. A first passage may be defined within the root and configured to direct a first airflow radially outward through the root into the first cooling chamber. A second passage may be defined within the root and configured to direct a second airflow radially outward through the root and into the second cooling chamber.Type: ApplicationFiled: April 10, 2017Publication date: October 11, 2018Applicant: United Technologies CorporationInventors: Matthew A Devore, Jonathan Ortiz
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Publication number: 20180291745Abstract: A gas turbine unit having a compressor section, a combustion chamber section containing at least one combustion chamber, and a turbine section, wherein, starting from a compressor inlet, a flow path extends. The gas turbine unit is equipped with at least one first and one second cooling air path. The first cooling air path draws off compressed air from the flow path upstream of the at least one combustion chamber. The first cooling air path has a higher pressure level than the second cooling air path and feeds the cooling air. The second cooling air path has a draw-off point in the compressor section, and extends from the compressor section to the turbine section, bypassing the at least one combustion chamber. After components have been cooled, the first cooling air path feeds the cooling air into the second cooling air path at an infeed point as additional cooling air.Type: ApplicationFiled: November 5, 2015Publication date: October 11, 2018Applicant: Siemens AktiengesellschaftInventor: Lennard Helmers
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Publication number: 20180291746Abstract: An airfoil may include an airfoil body, a cover, and a stud. The cover may be disposed on at least one of a suction side and a pressure side of the airfoil body and the stud may extend through the cover and into the airfoil body and the stud may be is joined to the airfoil body and the cover by a friction weld.Type: ApplicationFiled: April 7, 2017Publication date: October 11, 2018Applicant: UNITED TECHNOLOGIES CORPORATIONInventors: Chris Vargas, Steven D. Jenkel, Daniel A. Bales
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Publication number: 20180291747Abstract: A vane cooling system for a gas turbine engine comprises a vane (20a) arranged on a stator and having a chamber (27,28) extending continuously from a radially inner end to a radially outer end of the vane. The vane (20a) has a first inlet (41) and a second inlet (42). A first cooling fluid feed (54) in communication with the first inlet (41) and a second cooling fluid feed (43) in communication with the second inlet (42). The first cooling fluid feed (54) has a higher pressure than the second cooling fluid feed (43). A flow adjustment device (45) is arranged for adjusting a flow of the second cooling fluid feed (43) into the second inlet (42). The chamber is divided by a restrictor plate (25, 26) to provide an inner chamber (27) and a wall-side chamber (28) bordering the inner chamber (27). The first inlet (41) enters the wall-side chamber (28) and the second inlet (42) enters the central chamber (27).Type: ApplicationFiled: April 5, 2018Publication date: October 11, 2018Applicant: ROLLS-ROYCE plcInventor: Simon PITT
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Publication number: 20180291748Abstract: An airfoil for a gas turbine engine includes pressure and suction side walls joined to one another at leading and trailing edges and extending in a radial direction. A serpentine cooling passage is provided between the pressure and suction side walls. A passageway adjoins a passage wall and is fluidly interconnected to an upstream turn that has radially spaced apart innermost and outermost contours. The innermost contour is provided at the wall. A resupply hole is configured to exit downstream from the innermost contour.Type: ApplicationFiled: April 10, 2017Publication date: October 11, 2018Inventors: Christopher Whitfield, Carey Clum, Mark Borja
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Publication number: 20180291749Abstract: A shroud assembly of a turbine system is presented. The shroud assembly includes a plurality of outer shroud segments disposed annularly and defining a first gap between a pair of outer shroud segments of the plurality of outer shroud segments; a plurality of inner shroud segments disposed annularly and radially inward of the plurality of outer shroud segments, and defining a second gap between a pair of inner shroud segments of the plurality of inner shroud segments, wherein the plurality of inner shroud segments is same in number to the plurality of outer shroud segments, and wherein the first gap and the second gap are offset; and an impingement plate coupled to an outer shroud segment of the pair of outer shroud segments and interposed between the outer shroud segment and the pair of inner shroud segments.Type: ApplicationFiled: April 7, 2017Publication date: October 11, 2018Inventor: Neelesh Nandkumar SARAWATE
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Publication number: 20180291750Abstract: Various methods and assemblies are provided for producing composite components having formed in features. For example, a method may comprise depositing a composite material on a base tool; deploying a feature forming tool to press the composite material into one or more recesses; and processing the composite material with the feature forming tool pressing the composite material into the one or more recesses. The processed composite material forms a green state composite component. The feature forming tool comprises one or more forming members, supported by a frame, for forming one or more features of the composite component. The method also may include sealing a bag around the composite material before deploying a feature forming tool and removing the feature forming tool and the bag after processing the composite material.Type: ApplicationFiled: April 7, 2017Publication date: October 11, 2018Inventor: Donald Michael Corsmeier
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Publication number: 20180291751Abstract: A retainer for a gas turbine blade that inhibits deviation of a rotating blade mounted on a rotor of a gas turbine, can include: a retainer frame disposed at one side of the rotating blade and configured to form an inside chamber through which cooled air is introduced, between the retainer frame and the rotating blade; a barrier wall formed between the retainer frame and the rotating blade and configured to divide the inside chamber into a plurality of cooling chambers; and a fixing unit disposed at one side of the retainer frame and configured to fix the retainer frame to the rotor.Type: ApplicationFiled: December 14, 2017Publication date: October 11, 2018Inventor: Jae Hyeong CHOI
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Publication number: 20180291752Abstract: An apparatus and method relating to an airfoil for a turbine engine and cooling channels within the airfoil. The airfoil includes an outer wall defining an interior bound by a pressure side and a suction side extending axially between a leading edge and a trailing edge defining a chord-wise direction and extending radially between a root and a tip defining a span-wise direction. Further, the airfoil includes ribs located within the interior and a flow enhancer extending between the ribs.Type: ApplicationFiled: April 7, 2017Publication date: October 11, 2018Inventors: David Allen Flodman, Robert Francis Manning
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Publication number: 20180291753Abstract: An inlet section for a gas turbine engine according to an example of the present disclosure includes, among other things, an outer case extending about a rotor that is rotatable about an engine axis. The rotor carries a plurality of airfoils. A plurality of guide vanes are operable to guide flow from an engine inlet toward the plurality of airfoils relative to the engine axis. A plurality of spokes are mechanically attached to the outer case. Each of the plurality of spokes is received in a respective one of the plurality of guide vanes, and at least one of the plurality of spokes define a fluid passage in flow communication with a bearing assembly.Type: ApplicationFiled: April 11, 2017Publication date: October 11, 2018Inventors: Victor G. Filipenco, Michael C. Firnhaber
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Publication number: 20180291754Abstract: A gas turbine engine includes a case having a wall that provides a cavity. The wall includes an aperture and a bore. A tube assembly with a flange provides a fluid passage aligned with the aperture. A flow diverter is arranged in the cavity and includes a plate with a hole. An insert has a body and a head. The body is received in the hole and press-fit in the bore. The head captures the plate against the wall. A fastener secures the flange to the insert and clamps the flow diverter to the case.Type: ApplicationFiled: April 11, 2017Publication date: October 11, 2018Inventor: Bruce S. McDavid
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Publication number: 20180291755Abstract: An insulated seal seat assembly comprises a shaft configured and arranged to rotate about an axial axis, a seal seat that is secured to the shaft, and a thermal insulator configured and arranged radially between the shaft and the seal seat.Type: ApplicationFiled: April 6, 2017Publication date: October 11, 2018Inventors: Christopher M. Valva, Christopher T. Anglin, Brian P. Cigal
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Publication number: 20180291756Abstract: A ring seal assembly is provided. The ring seal assembly may comprise an air side ring seal and an oil side ring seal. The air side ring seal may have one or more axial and radial grooves. The oil side ring seal may also have one or more axial and radial grooves, and may have circumferential slots in fluid communication with one or more of the grooves. The oil side ring seal may have an extended leg protruding towards the air side ring seal. The extended leg and a forward outer surface of the oil side ring seal and an aft outer surface of the air side ring seal may define a spring cavity.Type: ApplicationFiled: April 6, 2017Publication date: October 11, 2018Applicant: UNITED TECHNOLOGIES CORPORATIONInventor: Jonathan Logan Miller
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Publication number: 20180291757Abstract: A variable turbine geometry (VTG) turbocharger is disclosed. The VTG turbocharger may comprise a turbine section, a bearing section, and an actuation pivot shaft (APS) having a bearing side in the bearing section and a pressure side in the turbine section. The VTG turbocharger may further comprise a bushing surrounding the APS and extending from a first end at the pressure side to a second end at the bearing side. In addition, the VTG turbocharger may further comprise a face seal assembly including a cup spring and a composite ring seal circumscribing the APS at the pressure side, with the cup spring forming a face seal with the first end of the bushing. The face seal assembly may further include a spring circumscribing the APS at the bearing side and engaging the second end of the bushing.Type: ApplicationFiled: April 11, 2017Publication date: October 11, 2018Applicant: BorgWarner Inc.Inventor: Donald M. Kennedy
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Publication number: 20180291758Abstract: A rotor disc sealing device, which seals a leakage gap generated in a space between facing surfaces of rotor discs to be coupled to one another, can include: slots formed in the facing surfaces of the rotor discs; a sealing plate formed of a hard material and inserted into the slots; and an auxiliary plate formed of a soft material and coupled to one side of the sealing plate.Type: ApplicationFiled: February 20, 2018Publication date: October 11, 2018Inventor: JA WON SEO
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Publication number: 20180291759Abstract: The present disclosure relates generally to a seal between two components. The seal includes a plurality of seal sections including convolutions therein that are inter-engaged with one another to form flexible and resilient seals.Type: ApplicationFiled: June 14, 2018Publication date: October 11, 2018Inventors: Timothy M. Davis, Michael S. Stevens
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Publication number: 20180291760Abstract: A gas turbine engine comprises a compressor section, a combustor, and a turbine section. The combustor has a radially outer surface defining a diffuser chamber radially outwardly of the combustor, and a cooling air chamber wall positioned outwardly of the diffuser chamber and the combustor, and radially inwardly of a second wall to define a cooling air chamber. The turbine section includes a high pressure turbine first stage blade having an outer tip, and a blade outer air seal positioned radially outwardly of the outer tip. A tap taps air having been compressed by the compressor and is passed through a heat exchanger. Air downstream of the heat exchanger passes into the cooling chamber, and then to the blade outer air seal.Type: ApplicationFiled: April 11, 2017Publication date: October 11, 2018Inventors: Jonathan Ortiz, Matthew A. Devore, Lane Mikal Thornton, James D. Hill
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Publication number: 20180291761Abstract: An energy generating system for transforming energy of fluid flow into electric energy, the system, at least in operation, comprising: a flow-changing member having a peripheral rim and mounted in a fluid path having a path surface, so as to be at least partially surrounded by said path surface, said flow-changing member being displaceable between a first position, in which at least a portion of the rim is spaced from a corresponding portion of the path surface to a first extent and a second position, in which said portion of the rim is spaced from said portion of the fluid path surface to a second extent greater than said first extent, so that increase of total volumetric flow rate of said fluid above a predetermined threshold to an increased volumetric flow rate is configured to induce displacement of said flow-changing member from said first position toward said second position, thereby causing the volumetric flow rate of said fluid at said spacing to be above said increased volumetric flow rate; and a turType: ApplicationFiled: May 26, 2016Publication date: October 11, 2018Inventor: Dani Peleg
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Publication number: 20180291762Abstract: A gas turbine engine comprises a compressor section, a combustor, and a turbine section. The turbine section includes a high pressure turbine first stage blade having an outer tip, and a blade outer air seal positioned radially outwardly of the outer tip. A tap taps air having been compressed by the compressor, the tapped air being passed through a heat exchanger. A vane section has vanes downstream of the combustor, but upstream of the first stage blade, and the air downstream of the heat exchanger passes radially inwardly of the combustor, along an axial length of the combustor, and then radially outwardly through a hollow chamber in the vanes, and then across the blade outer air seal, to cool the blade outer air seal.Type: ApplicationFiled: April 11, 2017Publication date: October 11, 2018Inventors: Jonathan Ortiz, Lane Mikal Thornton, Matthew A. Devore
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Publication number: 20180291763Abstract: A vane cooling system for a gas turbine engine comprises a vane (21) arranged on a stator and having a chamber (23) extending continuously from a radially inner end to a radially outer end of the vane. The vane (21) has; a radially inner inlet (24) and a radially outer inlet (25), a first cooling fluid feed (39) in communication with the radially inner inlet (24) and a second cooling fluid feed (28) in communication with the radially outer inlet (25), The first cooling fluid feed (39) has a higher pressure than the second cooling feed (28). A flow adjustment device (30) is arranged for adjusting a flow of the second cooling fluid feed into the radially outer inlet (25).Type: ApplicationFiled: April 5, 2018Publication date: October 11, 2018Applicant: ROLLS-ROYCE plcInventor: Simon PITT
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Publication number: 20180291764Abstract: A turbocharger, with a turbine that includes a turbine housing, turbine inflow housing, a rotor, and a compressor, which has a compressor housing and a rotor coupled to the turbine rotor via a shaft. A bearing housing is arranged between and coupled to the turbine and the compressor housings. The turbine inflow housing has a radially inner, outer and middle walls. The inner wall delimits an exhaust gas flow duct, and a cooling channel between the outer and middle walls. The bearing housing, extends, seen in the axial direction as far as into the region of the inner wall of the turbine inflow housing. A cooling water channel in the bearing housing surrounds the inner wall of the turbine inflow housing in the axial region and the bearing housing extends as far as into the region of the radially inner wall of the turbine inflow housing, radially on the outside.Type: ApplicationFiled: April 5, 2018Publication date: October 11, 2018Inventors: Björn Hossbach, Santiago Uhlenbrock
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Publication number: 20180291765Abstract: An inlet duct arrangement (40) comprises a duct (42) extending from an external fluid flow washed surface (50) into an interior region (51), the duct (42) having an opening (48) flush with the external surface (50). The arrangement (40) further comprises a hood (54) extending outwardly of the exterior surface (50) into external fluid flow (Y), and configured to direct external fluid into the duct (42). The hood (54) comprises an inlet aperture (56) configured to receive external fluid flow (Y), a first outlet aperture (62) configured to communicate with the duct (42), and a second outlet aperture (64). The second outlet aperture (64) is provided outwardly of the external surface (50) and downstream of the inlet aperture (56), and having a flow area smaller than the flow area of the inlet aperture (56).Type: ApplicationFiled: April 11, 2018Publication date: October 11, 2018Applicant: ROLLS-ROYCE plcInventor: Kevin M. BRITCHFORD
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Publication number: 20180291766Abstract: Included in a gas turbine casing and a gas turbine are a first casing that has a first flange portion, first connecting holes, and first notches; a second casing that has a second flange portion, a plurality of second connecting holes, and second notches; and fastening bolts to fasten the first flange portion and the second flange portion with the portions being closely attached to each other and with each fastening bolt penetrating the corresponding first and second connecting holes. A first radial direction ratio (L/H) is set to be from 0.09 to 0.11 where H is a length of each of the first flange portion and the second flange portion in a radial direction, and L is a length of each of the first notch and the second notch in a radial direction.Type: ApplicationFiled: October 4, 2016Publication date: October 11, 2018Inventors: Yasuyuki UETSUKI, Eiichi YANAGISAWA, Tadayuki HANADA, Yohei FUJIMOTO, Takafumi OTA
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Publication number: 20180291767Abstract: The present disclosure concerns an assembly of a turbomachine or of a combustion chamber test bench, generally including an annular outer housing, inside which a combustion chamber is housed, and a ferrule downstream from the housing. The ferrule may be attached to said housing by a connection comprising a radial flange rigidly connected to one of the housing and the ferrule, an annular groove being provided in the radial flange, and an axial tab rigidly connected to the ferrule or to the housing. The tab is generally housed in the groove, and the tab and the annular groove may be arranged relative to each other in such a way that, at assembly, they are in contact and centered relative to each another.Type: ApplicationFiled: November 16, 2016Publication date: October 11, 2018Applicant: SAFRAN AIRCRAFT ENGINESInventors: Marc Bernard Blanrue, Jean-François Bernard Adnot
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Publication number: 20180291768Abstract: A sealing assembly for a gas turbine is provided, especially an aircraft gas turbine, including: a first component having a first flange portion and a second component having a second flange portion; in the area of the first flange portion and the second flange portion, the first component and the second component being detachably intercoupled by a bolt connection; between the first component, especially a rounded portion, and the second component, especially the second flange portion, a variable interspace being provided that is at least partially sealed by at least one sealing element. The sealing element has a first sealing portion that rests against the first component, especially against the rounded portion, and a second sealing portion that rests against the second component, especially against the second flange portion; the first sealing portion and the second sealing portion being interconnected and extending obliquely relative to each other.Type: ApplicationFiled: April 6, 2018Publication date: October 11, 2018Inventor: Alexander Boeck
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Publication number: 20180291769Abstract: An assembly for a gas turbine engine includes a carrier and a supported component comprising ceramic matrix composite materials. The assembly also includes a retention assembly for coupling the supported component to the carrier.Type: ApplicationFiled: June 11, 2018Publication date: October 11, 2018Inventors: Daniel K. Vetters, Todd Engel, Robert J. Shinavski
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Publication number: 20180291770Abstract: A double turbine exhaust duct design and an inline V turbine exhaust duct design that both eliminate the need for the standard T-piece in a turbine exhaust duct assembly, substantially reducing the steam-side pressure drop, minimizing the sub-cooling in the steam cycle (the temperature difference between ACC condensate temperature out and turbine steam temperature), thus improving the overall efficiency of the steam cycle plant heat rate.Type: ApplicationFiled: December 26, 2017Publication date: October 11, 2018Inventor: Raf de Lausnay
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Publication number: 20180291771Abstract: An engine roller lifter for use in a valve train of an internal combustion engine according to one example of the present disclosure includes a body and a groove formed in the body. The body has an outer peripheral surface configured for sliding movement in a bore provided in the engine. The bore is supplied by an oil passage communicating therewith. The body defines an axial pocket that receives a plunger therein. The groove is inset from the outer peripheral surface and formed about only a portion of a circumference of the body. The groove defines a first end and a second end. Only a portion of the first and second ends overlap with the oil passage to regulate the amount of oil supplied to the groove from the oil passage.Type: ApplicationFiled: June 18, 2018Publication date: October 11, 2018Applicant: Eaton CorporationInventors: Leighton Roberts, Keith Eugene Kropf
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Publication number: 20180291772Abstract: A retainer comprises an inner tubular portion fitted to a mounting body. The inner tubular portion comprises an inner circular edge having a radius R3. An annular retaining surface is connected to the tubular portion. The annular retaining surface comprises an area bounded by an outer edge and the inner circular edge. The outer edge being bounded by an arc AD comprising a first radius R1, a sector CB comprising a second radius R2, where R1>R2, a first chord DC connecting the arc AD to the sector CB, and a second chord BA connecting the arc AD to the sector CB. A rocker arm assembly comprises a rocker arm body configured to actuate a valve in a valve train. The retaining surface abuts a spring coil to retain the coil against the rocker arm body, but the retaining surface does not abut a first arm of the spring.Type: ApplicationFiled: April 15, 2016Publication date: October 11, 2018Applicant: EATON CORPORATIONInventors: STEVEN E MCCUTCHEON, Eric J. Yankovic
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Publication number: 20180291773Abstract: The present invention relates to a process for preparing Lomitapide or its pharmaceutically acceptable salt thereof having high purity with acceptable levels of impurities.Type: ApplicationFiled: June 14, 2018Publication date: October 11, 2018Inventors: Parthasaradhi Reddy Bandi, Rathnakar Reddy Kura, Vamsi Krishna Bandi, Mukunda Reddy Jambula
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Publication number: 20180291774Abstract: Methods and systems are provided for cylinder valves of an internal combustion engine. In one example, a valve assembly may include a poppet valve and a valve spring. The valve spring includes a plurality of legs adapted to engage with an annular groove of the valve spring in order to couple the valve spring to the poppet valve.Type: ApplicationFiled: March 23, 2018Publication date: October 11, 2018Inventors: Rainer Friedfeldt, Peter Borkenhagen, Ulrich Heiter
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Publication number: 20180291775Abstract: In a control device for an engine, the engine includes combustion chambers, ports connected to the combustion chambers, and valves that open and close areas between the combustion chambers and the ports. The control device includes an electronic control unit that is configured to execute an anti-freezing operation of performing control to fully close the valves or make the valves be in a state of being opened with a lift amount of 1 mm or more, in a case where temperatures around the valves are lowered to a predetermined temperature range after the engine is stopped, or in a case where an outside air temperature when the engine is stopped is equal to or lower than a predetermined temperature. The predetermined temperature range is a temperature range in which an upper limit value is lower than 10° C., and the predetermined temperature is lower than 5° C.Type: ApplicationFiled: April 6, 2018Publication date: October 11, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Shigeki MIYASHITA
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Publication number: 20180291776Abstract: A variable valve gear for a combustion engine includes at least one lift valve and a camshaft, which comprises a first cam and a second cam (20) arranged offset in a longitudinal direction of the camshaft. The variable valve gear further comprises a transmission lever, which is arranged in operative connection between at least the one lift valve and the camshaft for actuating at least the one lift valve. The transmission lever comprises a swivel axis, a mounting and a cam follower (28). The mounting is supported so that it can swivel about the swivel axis. The mounting holds the cam follower (28). The mounting is supported so that it is axially displaceable parallel to the swivel axis and/or parallel to the camshaft, so that the cam follower (28) follows either the cam contour of the first cam or the cam contour of the second cam (20).Type: ApplicationFiled: April 4, 2018Publication date: October 11, 2018Inventors: Sibylle RUF, Adrian FINK
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Publication number: 20180291777Abstract: An internal combustion engine includes a turbocharger, a variable valve timing mechanism, a variable compression ratio mechanism, and an electronic control unit that controls the variable compression ratio mechanism such that the mechanical compression ratio becomes a target mechanical compression ratio and controls the variable valve timing mechanism such that the valve closing timing of the intake valve becomes a target valve closing timing. The electronic control unit brings the target valve closing timing close to an intake bottom dead center and make the target mechanical compression ratio low, compared to a steady state after the intake pressure reaches a target pressure, in a transient state before the intake pressure reaches the target pressure in a case where the intake pressure is increased to the target pressure higher than an atmospheric pressure by the turbocharger.Type: ApplicationFiled: April 4, 2018Publication date: October 11, 2018Applicant: Toyota Jidosha Kabushiki KaishaInventor: Yukihiro Nakasaka
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Publication number: 20180291778Abstract: An engine fluid heating apparatus, preventing failure in heating fluid, is provided. A control device opens a sub switch during an initial opening period (“IOP”) after closing a main switch, and the control device closes the sub switch during an initial closing period (“ICP”) after the IOP. Circuit normality is displayed by turning on an indicator lamp when a heater feeding circuit is electrically conducted via a bypass electric circuit during the IOP. Heater feeding is displayed by turning off the indicator lamp when power is supplied to the electric heater via a trunk electric circuit during the ICP. Circuit abnormality is displayed by turning off the indicator lamp when the heater feeding circuit is not electrically conducted via the bypass electric circuit during the IOP, and the circuit abnormality display is held by keeping the indicator lamp off during the ICP immediately after the IOP.Type: ApplicationFiled: April 3, 2018Publication date: October 11, 2018Inventor: Koji NAKAKITA