Patents Issued in March 2, 2017
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Publication number: 20170058677Abstract: Methods are provided for creating a fluidic barrier between the core stream and the bypass stream in a turbofan engine. A method comprises compressing the bypass and core streams with a fan between an upstream splitter and a downstream splitter which divides the bypass and core streams, and imparting a first momentum into the air stream proximate the fan in a region between the core and bypass streams and the upstream and downstream splitters to form a fluid barrier, wherein the first momentum of the air stream in the region is higher than a second momentum of the air stream adjacent the fluid barrier.Type: ApplicationFiled: August 27, 2015Publication date: March 2, 2017Applicant: Rolls Royce North American Technologies Inc.Inventor: Edward C. Rice
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Publication number: 20170058678Abstract: A turbine rotor blade includes at least two integrated cooling circuits that are formed within the blade that include a leading edge circuit having a first cavity and a second cavity and a trailing edge circuit that includes at least a third cavity located aft of the second cavity. The trailing edge circuit flows aft with at least two substantially 180-degree turns at the tip end and the root end of the blade providing at least a penultimate cavity and a last cavity. The last cavity is located along a trailing edge of the blade. A tip axial cooling channel connects to the first cavity of the leading edge circuit and the penultimate cavity of the trailing edge circuit. At least one crossover hole connects the penultimate cavity to the last cavity substantially near the tip end of the blade.Type: ApplicationFiled: August 31, 2015Publication date: March 2, 2017Inventors: Ching-Pang Lee, Nan Jiang, Jae Y. Um, Harry Holloman, Steven Koester
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Publication number: 20170058679Abstract: A method for forming a gas turbine engine component comprises the steps of forming a block of a high temperature alloy material. An external surface of the block is machined to form an external surface of a gas turbine engine component. At least one cooling passage within the component that is open to at least one end of the component is machined. At least one insert with a heat transfer feature is formed. The insert is installed within the at least one cooling passage. A component for a gas turbine engine is also disclosed.Type: ApplicationFiled: June 12, 2015Publication date: March 2, 2017Inventor: Brandon W. Spangler
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Publication number: 20170058680Abstract: A rotor blade for a turbine of a gas turbine system. The rotor blade may include: an airfoil that includes a pressure sidewall and a suction sidewall defining an outer periphery, wherein the pressure sidewall and suction sidewall of the airfoil connect along a leading edge and a trailing edge; a tip that defines an outer radial end of the airfoil, wherein the tip included a cap on which an outboard projecting rail defines a tip cavity; and a rail gap formed through an aftward section of the rail.Type: ApplicationFiled: September 2, 2015Publication date: March 2, 2017Inventors: Rohit Chouhan, Shashwat Swami Jaiswal
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Publication number: 20170058681Abstract: A removably attachable snubber assembly for turbine blades includes a turbine blade airfoil including a trailing edge and a leading edge joined by a pressure side and a suction side to provide an outer surface extending in a radial direction to a tip. At least one snubber attachment platform is integrally formed onto the outer surface of the turbine blade airfoil. The at least one snubber attachment platform includes an interlocking mechanism. A snubber is removably attachable to the at least one snubber attachment platform, the snubber including a first end, a second end, a trailing edge, a leading edge, a snubber length, and a snubber width. The snubber also includes a removable attachment mechanism on at least one of the first end and the second end that connects with the interlocking mechanism on the at least one snubber attachment platform.Type: ApplicationFiled: August 28, 2015Publication date: March 2, 2017Inventors: Nicholas F. Martin, JR., David J. Wiebe
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Publication number: 20170058682Abstract: A gas turbine component is provided. The gas turbine component includes an airfoil having a leading edge, a trailing edge, a suction side extending from the leading edge to the trailing edge, and a pressure side extending from the leading edge to the trailing edge opposite the suction side. The gas turbine component also includes a thermal barrier coating applied to the airfoil pressure side such that an uncoated margin is defined on the pressure side at the trailing edge.Type: ApplicationFiled: August 31, 2015Publication date: March 2, 2017Inventors: Cody Jermaine Ford, Brad Wilson VanTassel
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Publication number: 20170058683Abstract: A variable pitch fan for gas turbine engine is provided. The variable pitch fan includes a plurality of fan blades rotatably coupled to a disk and an actuation assembly for changing a pitch of each of the plurality of fan blades. The actuation assembly generally includes an actuation member operably connected to at least one of the plurality of fan blades and a pin. The pin is movable between a first position in which the pin is positioned at least partially in a channel defined in the actuation member, and a second position. The pin blocks movement of the actuation member relative to the pin past a range defined by the channel when in the first position. The actuation assembly further includes a retraction system for selectively engaging the pin in moving the pin from the first position to the second position.Type: ApplicationFiled: August 28, 2015Publication date: March 2, 2017Inventors: Daniel Alan NIERGARTH, Brandon Wayne MILLER
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Publication number: 20170058684Abstract: A gas turbine engine arcuate segment includes arcuate flange with anti-chording means extending away from annular wall. Anti-chording means may include insert in or bonded to flange and made of different alpha material than the annular wall. Anti-chording means may be heating means for heating flange. Heating means includes hot air inlet to and an outlet from a circumferentially extending heating flow passage embedded in flange and may further include a cold air inlet to heating flow passage. Heating flow passage may be a serpentine heating flow passage with an undulating heating flowpath. A turbine nozzle segment includes one or more airfoils extending radially between inner and outer arcuate band segments and forward and aft outer flanges extending radially from the outer arcuate band segment include anti-chording means. An arcuate turbine shroud segment includes forward and aft shroud rail segments with anti-chording means.Type: ApplicationFiled: May 7, 2015Publication date: March 2, 2017Inventors: Victor Hugo Silva CORREIA, Brian Kenneth CORSETTI, Mark BROOMER
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Publication number: 20170058685Abstract: A method for the manufacture of a component having an internal cavity and an array of pedestals extending into the cavity includes; defining external and core geometries of the component; using a powder-bed additive layer manufacturing method, building the component from a plurality of layers laid on a first-plane; and removing excess powder from the core in a first powder extraction direction along the first-plane. The core geometry is adapted for improved powder removal; including a main core passage, an array of pedestals extending into the passage and passage wall extending from the first-plane, one or more pedestals coinciding with the passage wall, having a cross-section in a plane parallel to the first-plane which is altered with respect to the cross-section of non-coinciding pedestals to extend a face of the pedestal which faces away from the powder extraction direction to intersect the passage wall at an obtuse angle.Type: ApplicationFiled: August 3, 2016Publication date: March 2, 2017Applicant: ROLLS-ROYCE plcInventor: Matthew D TUCKER
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Publication number: 20170058686Abstract: A coated seal slot system for turbomachinery includes a first turbine component comprising a first groove having at least one first coating attached to at least a portion of the first groove of the first turbine component, a second turbine component comprising a second groove having at least one second coating attached to at least a portion of the second groove of the second turbine component. The first and the second turbine components are disposable adjacent to each other with the first groove having the first coating and the second groove having the second coating together forming a coated seal slot extending across a gap between the first turbine component and the second turbine component. A seal is disposable in the coated seal slot and extendable across the gap between the first and the second turbine components and engageable with the first coating and the second coating to inhibit leakage of gas through the gap.Type: ApplicationFiled: August 25, 2015Publication date: March 2, 2017Applicant: GENERAL ELECTRIC COMPANYInventors: Stephen Francis BANCHERI, Venkat Subramaniam VENKATARAMANI, Glen Harold KIRBY, Neelesh Nandkumar SARAWATE, Nicholas Edward ANTOLINO, Edip SEVINCER, Anthony Christopher MARIN
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Publication number: 20170058687Abstract: The present application proposes an axial turbomachine compressor comprising a rotor with at least one annular row of rotor blades, a stator casing surrounding the row of rotor blades, the casing including a device for generating counter-vortexes. During operation of the compressor, the movement of the blades creates leakage vortexes at the blade tip. The generating device in turn injects counter-vortexes rotating in the opposite direction to the leakage vortexes in order to counter the leakage vortexes. This improves the surge margin of the compressor. The present application also provides a method for controlling the stability of a turbomachine compressor by counter-vortex injection.Type: ApplicationFiled: June 16, 2016Publication date: March 2, 2017Inventor: STÉPHANE HIERNAUX
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Publication number: 20170058688Abstract: A ring-shaped thermomechanical part for a turbine engine, comprising at least one coating including a polymeric matrix and fillers in non-deflagrating carbon exclusively comprising the chemical element C. A turbine engine comprising such a part.Type: ApplicationFiled: August 25, 2016Publication date: March 2, 2017Applicant: SAFRAN AIRCRAFT ENGINESInventors: Philippe Charles Alain LE BIEZ, Serge Georges Vladimir SELEZNEFF
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Publication number: 20170058689Abstract: A sealing element for a turbomachine, in particular an aircraft engine, with a housing for the at least one rotating structural component is provided. The sealing element comprises a honeycomb structure for arrangement inside the housing, wherein the honeycomb structure extends in a first direction, wherein support structures are connected to the honeycomb structure in one piece and/or in a pattern-like manner and extend at least partially into the honeycomb structure, and the support structures extend at least partially or completely in a second direction that is different from the first direction. The support structures have planar portions, which are formed by at least one partially or completely closed cell together with the honeycomb structure.Type: ApplicationFiled: August 25, 2016Publication date: March 2, 2017Inventors: Miklos GAEBLER, Stephan PANNIER, Mandy Eileen SCHNEIDER
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Publication number: 20170058690Abstract: A system for directing the flow of a fluid and controlling the rate of flow of the fluid. The system comprises a channel for directing the flow of the fluid; at least a pair of articulating vanes positioned within the channel for controlling the flow rate of the fluid within the channel; and a linkage between the vanes coupling the articulation of each of the vanes to the other of the vanes, wherein each vane imparts a force on the linkage when the relative angle of attack is greater than zero, wherein the force imparted on the linkage by one of the vanes is at least partially cancelled by the force imparted on the linkage by the other of the vanes during the articulation of the vanes.Type: ApplicationFiled: August 27, 2015Publication date: March 2, 2017Inventors: Edward C. Rice, Bradley S. Sumner
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Publication number: 20170058691Abstract: A system for directing the flow of a fluid which comprises a channel for containing the fluid; an articulating vane positioned within the channel for directing the flow of the fluid, the vane comprising a fixed segment rigidly connected to the channel and a first moveable segment operably connected to the fixed segment by a first hub, the first hub configured to allow relative articulation between the segments; an actuator member operably connected to the moveable segment to articulate the moveable segment about the first hub; and wherein the vane further comprises a second moveable segment operably connected to the vane by a second hub, wherein the actuator member articulates the first and second moveable segments by applying a single moment to the first hubs.Type: ApplicationFiled: August 27, 2015Publication date: March 2, 2017Inventor: Edward C. Rice
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Publication number: 20170058692Abstract: An air modulating system for a gas turbine engine includes a fixed plate with a fluid passage inlet, a floating plate with a first side adjacent to the fluid passage inlet, an actuated mount configured to move the floating plate relative to the fixed plate, and a linkage element for connecting the floating plate to the actuated mount. The linkage element includes a mounting flange configured to slidably engage the floating plate.Type: ApplicationFiled: February 24, 2015Publication date: March 2, 2017Inventors: Nicholas W. Kantany, Edward Boucher, Kristine Marie Carnavos, Adam Covino, Melaine Ho, Jorge I. Farah, Donald W. Peters
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Publication number: 20170058693Abstract: An information node is presented for use within a thermally challenged environment. The cooled information node has a case with a thermoelectric conditioner. A thermoelectric controller contained within the case operates the thermoelectric conditioner. A transceiver/power conditioner connects to both the thermoelectric controller and a processor and is configured to receive and transmit data signals from an outside source. The cooled information node also has a signal input/output module connected to each the transceiver/power conditioner, the processor and the thermoelectric controller. The signal input/output module is configured to receive and transmit another data signal from another outside source. The information node may be used within an electronic network connecting multiple outside sources to a central source. Furthermore, the information node may be used within a gas turbine engine for communication between engine components and the electronic engine control of the gas turbine engine.Type: ApplicationFiled: September 14, 2015Publication date: March 2, 2017Inventor: Alan H. Epstein
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Publication number: 20170058694Abstract: A system for packaging electronic components in a rotatable shaft includes an annular carrier shaft having a first end that is axially spaced from a second end and an inner surface that is radially spaced from an outer surface, and a plurality of transmitter assemblies annularly arranged within the carrier shaft. Each transmitter assembly includes a transmitter housing radially supported within the carrier shaft via a pair of circumferentially spaced rail members. Each transmitter assembly comprises a daughter board that extends laterally and longitudinally across a bottom portion of the transmitter housing and at least one electronic component electrically coupled to the daughter board. The electronic component extends substantially perpendicular to the daughter board within the transmitter housing.Type: ApplicationFiled: November 10, 2016Publication date: March 2, 2017Inventors: Donald W. Shaw, Kurt Kramer Schleif, Zachary John Snider
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Publication number: 20170058695Abstract: Blockages of turbomachine cooling circuit cooling holes resulting from coating processes can be removed by introducing a cleaning agent into the cooling circuit. The cooling circuit can be connected to a cleaning agent supply under pressure, adding force on the blockage to chemical action by the cleaning agent. The cleaning agent is chemically reactive with the coating material and substantially chemically non-reactive with the underlying material of the cooling circuit and other parts of the turbomachine. A neutralization agent can also be introduced to reduce toxicity and/or action of the cleaning agent. A turbomachine cooling hole cleaning method includes introducing a cleaning agent into a cooling circuit of a turbomachine part, pressurizing the cleaning agent in the cooling circuit until a first defined condition is met, and introducing a neutralization agent to the turbomachine part while the cleaning agent is applied to the cooling circuit.Type: ApplicationFiled: November 11, 2016Publication date: March 2, 2017Inventors: Mark Carmine Bellino, Mark Lawrence Hunt
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Publication number: 20170058696Abstract: A spoolie manifold including two or more spaced apart caps including outlets and one pair of caps connected together in flow communication by a jumper tube assembly. Jumper tube assembly including a jumper tube having first and second spoolies attached to opposite ends of the jumper tube. Ends may be welded into counterbores of the spoolies having spherical spoolie ends press-fitted into first and second sleeves in bores in pair of the caps and sleeves retained in bores with retainer clips. A duct connected in flow communication to an inlet of one of the caps. Spoolie manifold may include three spaced apart caps including a distributor cap between two port caps connected in flow communication to distributor cap by jumper tube assembly. Cap outlets may be feed strut ports in casing of turbine frame including hub spaced inwardly from casing and having spaced apart hollow struts with strut ports.Type: ApplicationFiled: August 27, 2015Publication date: March 2, 2017Inventors: John Alan MANTEIGA, Sydney Michelle WRIGHT, Christopher Richard KOSS, Tod Kenneth BOSEL
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Publication number: 20170058697Abstract: A magnetic squeeze film damper system comprises a bearing assembly having an outer race with a first outer surface and a first inner surface and a bearing located along the first inner surface. The system further comprises a squeeze film damper housing having a second outer surface and a second inner surface that is contiguous with the first outer surface. A channel having a forward end and an aft end is defined within the housing along the second inner surface, the channel bordered by the first outer surface. The system further includes a first seal gland located along the forward end of the channel and a second seal gland located along the aft end of the channel. Both seal glands comprise a reservoir for holding a magneto-rheological fluid, the reservoir encased in an elastomer. At least one electromagnet is arranged in close proximity to each of the seal glands.Type: ApplicationFiled: September 1, 2015Publication date: March 2, 2017Inventors: Andrew D. Copeland, Donald W. Burns, Stanford O. Clemens, Alan B. Cookerly
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Publication number: 20170058698Abstract: Methods and apparatus to adjust hydrodynamic designs of a hydrokinetic turbine are disclosed herein. An example method of generating hydrodynamic power via a hydrokinetic turbine includes identifying a first characteristic of a first location in a body of water where the turbine is to be installed and determining, based on the first characteristic of the first location, a geometry of a first turbine component of the turbine. The example method includes removably coupling the first turbine component to a frame of the turbine. The example method includes positioning the turbine including the first turbine component at the first location.Type: ApplicationFiled: September 1, 2015Publication date: March 2, 2017Inventor: Bryan J. Sydnor
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Publication number: 20170058699Abstract: The present invention provides a casing assembly for a gas turbine engine comprising a radially inner casing and a radially outer casing. The assembly further comprises an axial mounting arrangement for mounting the inner casing and outer casing in a fixed axial relationship. The axial mounting arrangement allows radial movement of the outer casing relative to the inner casing such that distortion of the inner casing as a result of engine carcass loads on the outer casing is obviated as the inner casing is radially isolated from the outer casing.Type: ApplicationFiled: April 26, 2016Publication date: March 2, 2017Applicant: ROLLS-ROYCE plcInventors: Richard S. BOOTH, Mark J. KNIGHT
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Publication number: 20170058700Abstract: A gas turbine engine exhaust component is disclosed herein. The gas turbine engine exhaust component includes an annular mixer that extends around a central axis and is formed to include inner lobes that define radially-outwardly opening channels and outer lobes that define radially-inwardly opening channels. A constraint band is added to connect the outer lobes and reduce vibration, deflections, and stresses.Type: ApplicationFiled: August 3, 2016Publication date: March 2, 2017Inventors: Tab M. Heffernan, Kenneth M. Pesyna
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Publication number: 20170058701Abstract: A parallel motion heat energy power machine and a working method thereof, includes a heat collector, an insulating pipe, a gasification reactor, an atomizer, a cylinder, a piston, a piston ring, an automatic exhaust valve, a cooler, a liquid storage tank, a pressure pump, a push-pull rod, an insulating layer, and a housing. The two cylinders are oppositely arranged on the housing in parallel. The piston is arranged inside the cylinder. The piston is provided with the piston ring. The pistons are arranged on both ends of the push-pull rod. The heat collector is connected to the gasification reactor through the insulating pipe. The atomizer is arranged on the air inlet end of the gasification reactor. The parallel motion heat energy power machine and working method thereof has a high heat-energy conversion efficiency. It is energy-saving, environmentally friendly, and less noisy.Type: ApplicationFiled: September 23, 2014Publication date: March 2, 2017Inventor: Yuanjun GUO
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Publication number: 20170058702Abstract: A steam turbine includes a boiler unit, first supply pipes, a second supply pipe, a plurality of valve units, a drain valve unit, and a controller. The controller is configured to control, before rotation of the turbine starts, an operation time and temperature of the auxiliary boiler so that the temperatures of the high-pressure turbine and the intermediate-pressure turbine are increased to the first setting temperature. The controller is configured to control, when the temperatures of the high-pressure turbine and the intermediate-pressure turbine are maintained at the first setting temperature, operation of the main boiler such that the temperature of the intermediate-pressure turbine reaches a second setting temperature while operation of the auxiliary boiler is interrupted, and control, when the temperature of the intermediate-pressure turbine is maintained at the second setting temperature, the operation of the main boiler such that steam is supplied only to the high-pressure turbine.Type: ApplicationFiled: March 24, 2016Publication date: March 2, 2017Inventor: Luke PARK
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Publication number: 20170058703Abstract: A power generation system includes a heating fluid circuit thermally coupled to multiple heat sources from at least an integrated hydrocracking plant and diesel hydro-treating plant of a petrochemical refining system. A first subset of the heat sources includes diesel hydro-treating plant heat exchangers coupled to streams in the diesel hydro-treating plant. A second subset of the heat sources includes hydrocracking plant heat exchangers coupled to streams in the hydrocracking plant. The heat exchangers are connected to a power generation system that includes an organic Rankine cycle (ORC) including a working fluid that is thermally coupled to the heating fluid circuit to heat the working fluid, an expander configured to generate electrical power from the heated first working fluid, and a control system configured to activate a set of control valves to selectively thermally couple the heating fluid circuit to at least a portion of the heat sources.Type: ApplicationFiled: March 31, 2016Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Hani Mohammed Al Saed, Ahmad Saleh Bunaiyan
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Publication number: 20170058704Abstract: Optimizing power generation from waste heat in large industrial facilities such as petroleum refineries by utilizing a subset of all available hot source streams selected based, in part, on considerations for example, capital cost, ease of operation, economics of scale power generation, a number of ORC machines to be operated, operating conditions of each ORC machine, combinations of them, or other considerations are described. Recognizing that several subsets of hot sources can be identified from among the available hot sources in a large petroleum refinery, subsets of hot sources that are optimized to provide waste heat to one or more ORC machines for power generation are also described.Type: ApplicationFiled: March 31, 2016Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Hani Mohammed Al Saed, Ahmad Saleh Bunaiyan
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Publication number: 20170058705Abstract: A power generation system includes two heating fluid circuits coupled to multiple heat sources from multiple sub-units of a petrochemical refining system. The sub-units include an integrated hydrocracking plant and aromatics plant. A first subset and a second subset of the heat sources includes diesel hydro-treating plant heat exchangers coupled to streams in the diesel hydro-treating plant and aromatics plant heat exchangers coupled to streams in the aromatics plant, respectively. A power generation system includes an organic Rankine cycle (ORC) including a working fluid that is thermally coupled to the two heating fluid circuits to heat the working fluid, and an expander to generate electrical power from the heated working fluid. The system includes a control system to activate a set of control valves to selectively thermally couple each heating fluid circuit to at least a portion of the heat sources.Type: ApplicationFiled: March 31, 2016Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Hani Mohammed Al Saed, Ahmad Saleh Bunaiyan
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Publication number: 20170058706Abstract: Optimizing power generation from waste heat in large industrial facilities such as petroleum refineries by utilizing a subset of all available hot source streams selected based, in part, on considerations for example, capital cost, ease of operation, economics of scale power generation, a number of organic Rankine cycle (ORC) machines to be operated, operating conditions of each ORC machine, combinations of them, or other considerations are described. Subsets of hot sources that are optimized to provide waste heat to one or more ORC machines for power generation are also described. Further, recognizing that the utilization of waste heat from all available hot sources in a mega-site such as a petroleum refinery and aromatics complex is not necessarily or not always the best option, hot source units in petroleum refineries from which waste heat can be consolidated to power the one or more ORC machines are identified.Type: ApplicationFiled: March 31, 2016Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Hani Mohammed Al Saed, Ahmad Saleh Bunaiyan
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Publication number: 20170058707Abstract: A water-steam circuit of a power plant includes at least one low-pressure steam system and a reservoir for waste water from the water-steam circuit, wherein the reservoir has, in addition to at least one waste water feed line, a further heat supply from the water-steam circuit and a steam outlet which is connected via a waste steam pipe to the low-pressure steam system of the water-steam circuit. A method for cleaning waste water from a power plant having a water-steam circuit, wherein the waste water is conducted into a reservoir and, in addition to a steam fraction generated by automatic evaporation of waste water in the reservoir, a water fraction that is also produced is evaporated using energy from the water-steam circuit, and the entire steam mass flow is introduced into a low-pressure steam system of the power plant.Type: ApplicationFiled: February 12, 2015Publication date: March 2, 2017Applicant: Siemens AktiengesellschaftInventor: Uwe Juretzek
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Publication number: 20170058708Abstract: A system includes a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant. The system includes a modified Goswami cycle energy conversion system including a first group of heat exchangers configured to heat a first portion of a working fluid by exchange with the heated heating fluid stream and a second group of heat exchangers configured to heat a second portion of the working fluid.Type: ApplicationFiled: December 22, 2015Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Akram Hamed Mohamed Kamel
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Publication number: 20170058709Abstract: A system includes a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant; and a modified Goswami energy conversion system. The modified Goswami energy conversion system includes a first group of heat exchangers configured to heat a first portion of a working fluid by exchange with the heated heating fluid stream; and a second group of heat exchangers configured to heat a second portion of the working fluid. The modified Goswami energy conversion system includes a rectifier configured to receive the heated first and second portions of the working fluid and a third portion of the working fluid and to output an overhead discharge stream and a liquid stream, the third portion of the working fluid being at a lower temperature than the heated first and second portions of the working fluid.Type: ApplicationFiled: December 22, 2015Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Akram Hamed Mohamed Kamel
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Publication number: 20170058710Abstract: Preferred embodiments provide a system and method of generating steam comprising providing a continuous supply of coal, combusting the coal in a primary processing chamber in the presence of oxygen and water to provide a first product gas stream, recovering heat from the first product gas stream in a first heat recovery steam generator (HRSG) to produce a first steam output, processing the first product gas stream in a secondary processing chamber in the presence of oxygen and water to provide a second product gas stream substantially free of inorganic, organic and particulate contaminants, recovering heat from the second product gas stream in a second heat recovery steam generator (HRSG) to produce a second steam output, and combining the first steam output and the second steam output. In preferred embodiments, the combined steam output is used to drive a steam turbine. In certain preferred embodiments, the steam turbine is operatively coupled to an electric generator to produce electricity.Type: ApplicationFiled: November 14, 2016Publication date: March 2, 2017Inventors: Geoffrey HIRSON, Gus F. SHOUSE, Daniel M. HIRSON
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Publication number: 20170058711Abstract: A system includes a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant; and an Organic Rankine cycle energy conversion system. The Organic Rankine cycle energy conversion system includes a heat exchanger configured to heat a first portion of a working fluid by exchange with the heated heating fluid stream; and a cooling subsystem including one or more cooling elements each configured to cool one or more of a process stream from the crude oil associated gas processing plant and a cooling water stream for ambient air cooling by exchange with a second portion of the working fluid.Type: ApplicationFiled: December 22, 2015Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Akram Hamed Mahmoud Kamel
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Publication number: 20170058712Abstract: The present disclosure relates to systems and methods useful for power production. In particular, a power production cycle utilizing CO2 as a working fluid may be combined with a second cycle wherein a compressed CO2 stream from the power production cycle can be heated and expanded to produce additional power and to provide additional heating to the power production cycle.Type: ApplicationFiled: August 31, 2016Publication date: March 2, 2017Inventors: Rodney John Allam, Brock Alan Forrest
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Publication number: 20170058713Abstract: A power generation system includes two heating fluid circuits coupled to multiple heat sources from multiple sub-units of a petrochemical refining system. The sub-units include an integrated diesel hydro-treating plant and aromatics plant. A first subset and a second subset of the heat sources includes diesel hydro-treating plant heat exchangers coupled to streams in the diesel hydro-treating plant and aromatics plant heat exchangers coupled to streams in the aromatics plant, respectively. A power generation system includes an organic Rankine cycle (ORC) including a working fluid that is thermally coupled to the two heating fluid circuits to heat the working fluid, and an expander to generate electrical power from the heated working fluid. The system includes a control system to activate a set of control valves to selectively thermally couple each heating fluid circuit to at least a portion of the heat sources.Type: ApplicationFiled: March 31, 2016Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Hani Mohammed Al Saed, Ahmad Saleh Bunaiyan
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Publication number: 20170058714Abstract: Optimizing power generation from waste heat in large industrial facilities such as petroleum refineries by utilizing a subset of all available hot source streams selected based, in part, on considerations for example, capital cost, ease of operation, economics of scale power generation, a number of ORC machines to be operated, operating conditions of each ORC machine, combinations of them, or other considerations are described. Subsets of hot sources that are optimized to provide waste heat to one or more ORC machines for power generation are also described. Further, recognizing that the utilization of waste heat from all available hot sources in a mega-site such as a petroleum refinery and aromatics complex is not necessarily or not always the best option, hot source units in petroleum refineries from which waste heat can be consolidated to power the one or more ORC machines are identified.Type: ApplicationFiled: March 31, 2016Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Hani Mohammed Al Saed, Ahmad Saleh Bunaiyan
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Publication number: 20170058715Abstract: A control system for a power plant includes a sensor that measures a rotor surface temperature of a steam turbine rotor, where the temperature is a function of exhaust gasses from a heat source for heating steam to a target temperature. The control system includes a controller coupled to the sensor and configured to compute the target temperature using an inverse process model for steam turbine rotor stress dynamics, and based on a reference steam turbine rotor stress and a feedback steam turbine rotor stress, compute a measured steam turbine rotor stress based on a measured surface temperature of the steam turbine rotor, compute an estimated steam turbine rotor stress using a process model for the steam turbine rotor stress dynamics, and based on the target temperature, and compute the feedback steam turbine rotor stress based on the measured steam turbine rotor stress and the estimated steam turbine rotor stress.Type: ApplicationFiled: August 28, 2015Publication date: March 2, 2017Inventors: Mert Geveci, John Lawrence Meyer
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Publication number: 20170058716Abstract: An integrated power generation system is provided. The system includes an heat source that produces a first gas flow to power a turbine operatively coupled to a compressor. The first gas flow can also heat a feedwater flow passing through a boiler. The compressor can produce a second gas flow that may be divided in two portions, the first portion flowing back to the heat source and the second portion flowing to an end user. Also, the second portion may be routed through an air cooler to dissipate heat to the feedwater flow to cool the second portion as well as preheat the feedwater flow prior to entering the boiler. The first portion can also exchange heat with the first gas flow exiting the boiler prior to the first portion entering the heat source. The boiler operation and the compressor operation are operable independently or concurrently.Type: ApplicationFiled: August 28, 2015Publication date: March 2, 2017Inventors: James Christopher Collins, Markian I. Krisa
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Publication number: 20170058717Abstract: In an operation method of a multi-shaft combined cycle plant, a low-load mode in which an output of the multi-shaft combined cycle plant is adjusted by adjustment of only an output of a gas turbine and a high-load mode in which the output of the multi-shaft combined cycle plant is adjustable by adjustment of the output of the gas turbine and adjustment of an output of a steam turbine are switched according to a demanded load. In the low-load mode, steam at a standby flow rate at which the steam turbine is capable of maintaining a predetermined initial load is supplied to the steam turbine, and the initial load is applied to the steam turbine.Type: ApplicationFiled: March 26, 2015Publication date: March 2, 2017Inventors: Kazunari MATSUMOTO, Jumpei SUZUKI, Elvio RUBIO, Pablo RATIA, Carlos Mora DANIEL
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Publication number: 20170058718Abstract: A power generation system includes four heating fluid circuits thermally coupled to heat sources from sub-units of a petrochemical refining system. The sub-units include a hydrocracking plant, an aromatics plant, and a diesel hydro-treating plant. Subsets of the heat sources includes hydrocracking plant heat exchangers coupled to streams in the hydrocracking plant, aromatics plant heat exchangers coupled to streams in the aromatics plant, and diesel hydro-treating plant heat exchangers coupled to streams in the diesel hydro-treating plant. A power generation system includes three organic Rankine cycles, each including a working fluid that is thermally coupled to at least one heating fluid circuit to heat the working fluid, and an expander to generate electrical power from the heated working fluid. The system includes a control system to activate a set of control valves to selectively thermally couple each heating fluid circuit to at least a portion of the heat sources.Type: ApplicationFiled: March 31, 2016Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Hani Mohammed Al Saed, Ahmad Saleh Bunaiyan
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Publication number: 20170058719Abstract: A system includes a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant; and a Kalina cycle energy conversion system including a first group of heat exchangers to heat a first portion of a working fluid by exchange with the heated heating fluid stream and a second group of heat exchangers to heat a second portion of the working fluid. The second group of heat exchangers includes a first heat exchanger to heat the second portion of the working fluid by exchange with a liquid stream of the working fluid; and a second heat exchanger to heat the second portion of the working fluid by exchange with the heated heating fluid stream.Type: ApplicationFiled: December 22, 2015Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Akram Hamed Mohamed Kamel
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Publication number: 20170058720Abstract: Optimizing power generation from waste heat in large industrial facilities such as petroleum refineries by utilizing a subset of all available hot source streams selected based, in part, on considerations for example, capital cost, ease of operation, economics of scale power generation, a number of ORC machines to be operated, operating conditions of each ORC machine, combinations of them, or other considerations are described. Subsets of hot sources that are optimized to provide waste heat to one or more ORC machines for power generation are also described. Further, recognizing that the utilization of waste heat from all available hot sources in a mega-site such as a petroleum refinery and aromatics complex is not necessarily or not always the best option, hot source units in petroleum refineries from which waste heat can be consolidated to power the one or more ORC machines are identified.Type: ApplicationFiled: March 31, 2016Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Hani Mohammed Al Saed, Ahmad Saleh Bunaiyan
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Publication number: 20170058721Abstract: Optimizing power generation from waste heat in large industrial facilities such as petroleum refineries by utilizing a subset of all available hot source streams selected based, in part, on considerations for example, capital cost, ease of operation, economics of scale power generation, a number of ORC machines to be operated, operating conditions of each ORC machine, combinations of them, or other considerations are described. Subsets of hot sources that are optimized to provide waste heat to one or more ORC machines for power generation are also described. Further, recognizing that the utilization of waste heat from all available hot sources in a mega-site such as a petroleum refinery and aromatics complex is not necessarily or not always the best option, hot source units in petroleum refineries from which waste heat can be consolidated to power the one or more ORC machines are identified.Type: ApplicationFiled: March 31, 2016Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Hani Mohammed Al Saed, Ahmad Saleh Bunaiyan
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Publication number: 20170058722Abstract: A system includes a waste heat recovery heat exchanger configured to heat a heating fluid stream by exchange with a heat source in a crude oil associated gas processing plant. The system includes an Organic Rankine cycle energy conversion system including a pump, an energy conversion heat exchanger configured to heat the working fluid by exchange with the heated heating fluid stream, a turbine and a generator configured to generate power by expansion of the heated working fluid, a cooling element configured to cool the expanded working fluid after power generation, and an accumulation tank. The heating fluid flows from the accumulation tank, through the waste heat recovery heat exchanger, through the Organic Rankine cycle energy conversion system, and back to the accumulation tank.Type: ApplicationFiled: December 22, 2015Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Akram Hamed Mohamed Kamel
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Publication number: 20170058723Abstract: Optimizing power generation from waste heat in large industrial facilities such as petroleum refineries by utilizing a subset of all available hot source streams selected based, in part, on considerations for example, capital cost, ease of operation, economics of scale power generation, a number of ORC machines to be operated, operating conditions of each ORC machine, combinations of them, or other considerations are described. Recognizing that several subsets of hot sources can be identified from among the available hot sources in a large petroleum refinery, subsets of hot sources that are optimized to provide waste heat to one or more ORC machines for power generation are also described.Type: ApplicationFiled: March 31, 2016Publication date: March 2, 2017Inventors: Mahmoud Bahy Mahmoud Noureldin, Hani Mohammed Al Saed, Ahmad Saleh Bunaiyan
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Publication number: 20170058724Abstract: A valve rotation includes: a first sheet member that extends toward a surrounding of a valve stem under a condition that a rotation action of the first sheet member is suppressed with respect to a cylinder head, and a second sheet member that faces to the first sheet member, that is capable of rotating with respect to the first sheet member and is subjected to a load for opening the valve; a force conversion structure that converts the load for opening the valve applied to the second sheet member into a rotation force.Type: ApplicationFiled: February 17, 2015Publication date: March 2, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shouji KATSUMATA, Kenichi HARADA, Toshihisa SUGIYAMA
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Publication number: 20170058725Abstract: An electric variable valve timing apparatus includes a sprocket unit and an electric motor. The electric motor is fixed to a chain cover with bolts. The chain cover includes plural bosses each having an internal thread to which one of the bolts is threaded. The bosses extend from the chain cover toward the sprocket unit to positions at which the bosses face an outer periphery of the sprocket unit in a radial direction. The bosses are arranged such that, when the sprocket unit moves downward from an attaching position, at which the sprocket unit is attached to the camshaft, at least two bosses are engaged with the sprocket unit to restrict downward movement of the sprocket unit, and that the sprocket unit is allowed to move between a location outside of a space covered by the chain cover and the attaching position.Type: ApplicationFiled: August 17, 2016Publication date: March 2, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Hiroki TOSHITANI
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Publication number: 20170058726Abstract: A variable camshaft timing device can operate using pressure generated by camshaft torque energy to transfer fluid from one working chamber to another work chamber or operate via an external fluid pressure source to fill one working chamber while simultaneously exhausting an opposing working chamber or operate using both modes simultaneously. The mode of the variable camshaft timing device is determined by the position of the control valve. The lock pin is controlled by fluid from one of the working chambers.Type: ApplicationFiled: August 31, 2015Publication date: March 2, 2017Inventors: Franklin R. Smith, Brian T. Kenyon