Patents by Inventor Khawar Syed
Khawar Syed has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240060644Abstract: A microtube cluster burner (1) comprises a multitude of ducts (41) extending through fluid plenums (31, 32, 33). Discharge means (51, 52) fluidly connect the plenums to the ducts. At least one of the ducts (41) is provided with at least two discharge means (51, 52) for discharging fluid from a plenum (31, 32) into the duct at at least two different longitudinal positions of the duct.Type: ApplicationFiled: January 7, 2022Publication date: February 22, 2024Inventors: Jaan HELLAT, Wolfgang Dieter KAPPIS, Sriwickrama Prithivira HARASGAMA, Franklin Marie Georges Martin GENIN, Khawar SYED
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Patent number: 11313559Abstract: The invention refers to a method and a device for flame stabilization in a burner system of a stationary combustion engine, preferably a stationary gas turbine, in which a flow of an air/fuel mixture is produced and being swirled to form a vortex flow to which a swirl number is assignable before entering a combustion zone in which the vortex flow of the air/fuel mixture is ignited to form a flame within a reverse flow zone caused by vortex breakdown. The swirl number perturbation driven by thermoacoustic oscillation inside the burner system is controlled by affecting the vortex flow actively before entering the combustion zone on basis of changing a flame transfer function assigned to the burner system with the proviso of minimizing pulsation amplitudes of the flame transfer function.Type: GrantFiled: February 22, 2016Date of Patent: April 26, 2022Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Fernando Biagioli, Alessandro Scarpato, Torsten Wind, Khawar Syed
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Patent number: 10865987Abstract: The present invention generally relates to a sequential combustor for a gas turbine having second and/or subsequent stages of a re-heat, sequential or axially-staged combustion system. A variation in Mach number along the flow path can be used to control static temperature variation, which in turn influences the progress of auto-ignition reactions that eventually lead to the onset of combustion.Type: GrantFiled: July 8, 2016Date of Patent: December 15, 2020Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Khawar Syed, Madhavan Narasimhan Poyyapakkam, Franklin Marie Genin
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Patent number: 10544736Abstract: A combustion chamber including a body with a fuel supply duct for supplying a fuel into the body and a carrier air supply duct for supplying air into the body. An adjusting system adjusts the carrier air mass flow supplied into the body according to the features of the fuel.Type: GrantFiled: April 4, 2014Date of Patent: January 28, 2020Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Madhavan Narasimhan Poyyapakkam, Khawar Syed, Klaus Knapp, Torsten Wind
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Patent number: 10539322Abstract: A method for determining fatigue lifetime consumption of an engine component, by defining a reference thermal load cycle, the reference thermal load cycle being characterized by a reference load cycle amplitude and a reference load cycle time, and determining a reference load cycle lifetime consumption. The method includes measuring a temperature of the engine component, determining a thermal load cycle based upon the temperature measurement, determining a load cycle amplitude, determining a load cycle time, relating the load cycle time to the reference load cycle time, thereby determining a load cycle time factor, relating the load cycle amplitude to the reference load cycle amplitude, thereby determining a load cycle amplitude factor, combining the load cycle time factor and the load cycle amplitude factor into a combined load cycle factor for determining a load cycle lifetime consumption.Type: GrantFiled: April 7, 2017Date of Patent: January 21, 2020Assignee: Ansaldo Energia Switzerland AGInventors: Felipe Bolaños-Chaverri, Torsten Wind, Fernando Biagioli, Khawar Syed
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Publication number: 20170292695Abstract: A method for determining fatigue lifetime consumption of an engine component, by defining a reference thermal load cycle, the reference thermal load cycle being characterized by a reference load cycle amplitude and a reference load cycle time, and determining a reference load cycle lifetime consumption. The method includes measuring a temperature of the engine component, determining a thermal load cycle based upon the temperature measurement, determining a load cycle amplitude, determining a load cycle time, relating the load cycle time to the reference load cycle time, thereby determining a load cycle time factor, relating the load cycle amplitude to the reference load cycle amplitude, thereby determining a load cycle amplitude factor, combining the load cycle time factor and the load cycle amplitude factor into a combined load cycle factor for determining a load cycle lifetime consumption.Type: ApplicationFiled: April 7, 2017Publication date: October 12, 2017Applicant: ANSALDO ENERGIA SWITZERLAND AGInventors: Felipe BOLAÑOS-CHAVERRI, Torsten WIND, Fernando BIAGIOLI, Khawar SYED
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Publication number: 20170089584Abstract: A vortex generator, such as for a fuel injection system of a gas turbine, includes a base area and a vortex generator body extending in a tapering fashion from the base area with a predetermined height. A rapid fuel-air mixing at allowable pressure drops for higher firing temperature gas turbines and within short burner-mixing length or time scales is achieved by the vortex generator body forming at least two partial vortex generators, whereby each of the at least two partial vortex generators has its own trailing edge.Type: ApplicationFiled: September 28, 2016Publication date: March 30, 2017Applicant: ANSALDO ENERGIA SWITZERLAND AGInventors: Madhavan Narasimhan POYYAPAKKAM, Yang YANG, Khawar SYED
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Patent number: 9557061Abstract: An axial swirler, in particular for premixing of oxidizer and fuel in gas turbines, includes a series of swirl vanes with a streamline cross-section. Each swirl vane has a leading edge, a trailing edge, and a suction side and a pressure side extending each between the leading and trailing edges. The swirl vanes are arranged around a swirler axis, wherein the leading edges extend essentially in radial direction. Flow slots are formed between the suction side of each swirl vane and the pressure side of its nearest neighboring swirl vane. Furthermore, at least one swirl vane has a discharge flow angle between a tangent to its camber line at its trailing edge and the swirler axis that is monotonically increasing with increasing radial distance from the swirler axis. The invention also relates to a burner with such a swirler and a method of operating the burner.Type: GrantFiled: November 5, 2013Date of Patent: January 31, 2017Assignee: GENERAL ELECTRIC TECHNOLOGY GMBHInventors: Fernando Biagioli, Madhavan Narasimhan Poyyapakkam, Riccardo Cenni, Khawar Syed
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Publication number: 20170009651Abstract: The present invention generally relates to a sequential combustor for a gas turbine having second and/or subsequent stages of a re-heat, sequential or axially-staged combustion system. A variation in Mach number along the flow path can be used to control static temperature variation, which in turn influences the progress of auto-ignition reactions that eventually lead to the onset of combustion.Type: ApplicationFiled: July 8, 2016Publication date: January 12, 2017Applicant: ANSALDO ENERGIA SWITZERLAND AGInventors: Khawar SYED, Madhavan Narasimhan POYYAPAKKAM, Franklin Marie GENIN
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Publication number: 20160252251Abstract: The invention refers to a method and a device for flame stabilization in a burner system of a stationary combustion engine, preferably a stationary gas turbine, in which a flow of an air/fuel mixture is produced and being swirled to form a vortex flow to which a swirl number is assignable before entering a combustion zone in which the vortex flow of the air/fuel mixture is ignited to form a flame within a reverse flow zone caused by vortex breakdown. The swirl number perturbation driven by thermoacoustic oscillation inside the burner system is controlled by affecting the vortex flow actively before entering the combustion zone on basis of changing a flame transfer function assigned to the burner system with the proviso of minimizing pulsation amplitudes of the flame transfer function.Type: ApplicationFiled: February 22, 2016Publication date: September 1, 2016Applicant: General Electric Technology GmbHInventors: Fernando BIAGIOLI, Alessandro SCARPATO, Torsten WIND, Khawar SYED
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Patent number: 9347663Abstract: A swirler including an annular housing with limiting walls. At least two vanes are arranged in the annular housing including the sidewalls of the swirler. The leading edge area of each vane has a profile, which is oriented parallel to a main flow direction prevailing at the leading edge position, wherein the profiles of the vanes turn from the main flow direction prevailing at the leading edge position to impose a swirl on the flow, and wherein, with reference to a central plane of the vanes the trailing edges are provided with at least two lobes in opposite transverse directions. A burner for a combustion chamber of a gas turbine including such a swirler and at least one nozzle having its outlet orifice at or in a trailing edge of the vane and to a method of operation of such a burner.Type: GrantFiled: May 11, 2012Date of Patent: May 24, 2016Assignee: GENERAL ELECTRIC TECHNOLOGY GMBHInventors: Madhavan Narasimhan Poyyapakkam, Fernando Biagioli, Khawar Syed, Ronghai Mao, Stefano Bernero
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Patent number: 8938971Abstract: A combined flow straightener and mixer is disclosed as well as a burner for a combustion chamber of a gas turbine having such a mixing device. At least two streamlined bodies are arranged in a structure comprising the side walls of the mixer. The leading edge area of each streamlined body has a profile, which is oriented parallel to a main flow direction prevailing at the leading edge position, and with reference to a central plane of the streamlined bodies, the trailing edges are provided with at least two lobes in opposite transverse directions. The periodic deflections forming the lobes from two adjacent streamlined bodies are out of phase.Type: GrantFiled: May 11, 2012Date of Patent: January 27, 2015Assignee: Alstom Technology LtdInventors: Madhavan Narasimhan Poyyapakkam, Khawar Syed, Satish Kumar Gajula, John Philip Wood
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Publication number: 20140305128Abstract: A combustion chamber including a body with a fuel supply duct for supplying a fuel into the body and a carrier air supply duct for supplying air into the body. An adjusting system adjusts the carrier air mass flow supplied into the body according to the features of the fuel.Type: ApplicationFiled: April 4, 2014Publication date: October 16, 2014Inventors: Madhavan Narasimhan POYYAPAKKAM, Khawar Syed, Klaus Knapp, Torsten Wind
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Publication number: 20140123661Abstract: An axial swirler, in particular for premixing of oxidizer and fuel in gas turbines, includes a series of swirl vanes with a streamline cross-section. Each swirl vane has a leading edge, a trailing edge, and a suction side and a pressure side extending each between the leading and trailing edges. The swirl vanes are arranged around a swirler axis, wherein the leading edges extend essentially in radial direction. Flow slots are formed between the suction side of each swirl vane and the pressure side of its nearest neighboring swirl vane. Furthermore, at least one swirl vane has a discharge flow angle between a tangent to its camber line at its trailing edge and the swirler axis that is monotonically increasing with increasing radial distance from the swirler axis. The invention also relates to a burner with such a swirler and a method of operating the burner.Type: ApplicationFiled: November 5, 2013Publication date: May 8, 2014Applicant: ALSTOM Technology LtdInventors: Fernando BIAGIOLI, Madhavan Narasimhan POYYAPAKKAM, Riccardo CENNI, Khawar SYED
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Patent number: 8677756Abstract: A burner, such as for a secondary combustion chamber of a gas turbine with sequential combustion having first and second combustion chambers, includes an injection device for introducing at least one gaseous fuel into the burner. The injection device has at least one body which is arranged in the burner with at least one nozzle for introducing the gaseous fuel into the burner. The body is configured as a streamlined body which has a streamlined cross-sectional profile and which extends with a longitudinal direction perpendicularly or at an inclination to a main flow direction prevailing in the burner. The at least one nozzle has its outlet orifice at or in a trailing edge of the streamlined body. The body has two lateral surfaces substantially parallel to the main flow direction. At least one vortex generator is located on at least one lateral surface upstream of the at least one nozzle.Type: GrantFiled: May 7, 2012Date of Patent: March 25, 2014Assignee: Alstom Technology Ltd.Inventors: Madhavan Poyyapakkam, Anton Winkler, Khawar Syed, Adnan Eroglu, Andrea Ciani
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Patent number: 8490398Abstract: The disclosure relates to a burner for a single combustion chamber or first combustion chamber of a gas turbine, with an injection device for the introduction of at least one gaseous and/or liquid fuel into the burner, wherein the injection device has at least one body which is arranged in the burner with at least one nozzle for introducing the at least one fuel into the burner, wherein the at least one body is located in a first section of the burner with a first cross-sectional area at a leading edge of the at least one body with reference to a main flow direction prevailing in the burner, wherein downstream of said body a mixing zone is located with a second cross-sectional area, and at and/or downstream of said body the cross-sectional area is reduced, such that the first cross-sectional area is larger than the second cross-sectional area.Type: GrantFiled: May 7, 2012Date of Patent: July 23, 2013Assignee: Alstom Technology Ltd.Inventors: Madhavan Poyyapakkam, Anton Winkler, Khawar Syed, Andrea Ciani
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Patent number: 8424310Abstract: A mixing chamber with a wall and at least one vortex generating element arranged on the wall is provided. The vortex generating element has at least three surfaces, at least one of the surfaces forming a top surface and the other surfaces forming at least first and second side surfaces, the first and second side surfaces arranged not in parallel, the top surface being in contact with the wall via a front edge of the top surface, the front edge extending traverse to a flow direction, the top surface further abutting the first and second side faces forming first and second edges, the first side surface extending in parallel to the flow direction so that the first edge does not contribute to generating a vortex, and the second side surface extending not in parallel to the flow direction so that the second edge contributes to generating the vortex.Type: GrantFiled: April 23, 2009Date of Patent: April 23, 2013Assignee: Siemens AktiengesellschaftInventor: Khawar Syed
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Patent number: 8402768Abstract: The disclosure relates to a burner for a combustion chamber of a gas turbine, with an injection device for the introduction of at least one gaseous and/or liquid fuel into the burner, wherein the injection device has at least one body which is arranged in the burner with at least one nozzle for introducing the at least one fuel into the burner, the at least one body being configured as a streamlined body which has a streamlined cross-sectional profile and which extends with a longitudinal direction perpendicularly or at an inclination to a main flow direction prevailing in the burner. The at least one nozzle has its outlet orifice at or in a trailing edge of the streamlined body, and with reference to a central plane of the streamlined body, the trailing edge is provided with at least two lobes extending in opposite transverse directions.Type: GrantFiled: May 7, 2012Date of Patent: March 26, 2013Assignee: Alstom Technology Ltd.Inventors: Khawar Syed, Madhavan Poyyapakkam, Anton Winkler, Andre Theuer
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Publication number: 20120297787Abstract: A combined flow straightener and mixer is disclosed as well as a burner for a combustion chamber of a gas turbine having such a mixing device. At least two streamlined bodies are arranged in a structure comprising the side walls of the mixer. The leading edge area of each streamlined body has a profile, which is oriented parallel to a main flow direction prevailing at the leading edge position, and with reference to a central plane of the streamlined bodies, the trailing edges are provided with at least two lobes in opposite transverse directions. The periodic deflections forming the lobes from two adjacent streamlined bodies are out of phase.Type: ApplicationFiled: May 11, 2012Publication date: November 29, 2012Applicant: ALSTOM Technology LtdInventors: Madhavan Narasimhan POYYAPAKKAM, Khawar SYED, Satish Kumar GAJULA, John Philip WOOD
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Publication number: 20120285172Abstract: The disclosure relates to a burner for a single combustion chamber or first combustion chamber of a gas turbine, with an injection device for the introduction of at least one gaseous and/or liquid fuel into the burner, wherein the injection device has at least one body which is arranged in the burner with at least one nozzle for introducing the at least one fuel into the burner, wherein the at least one body is located in a first section of the burner with a first cross-sectional area at a leading edge of the at least one body with reference to a main flow direction prevailing in the burner, wherein downstream of said body a mixing zone is located with a second cross-sectional area, and at and/or downstream of said body the cross-sectional area is reduced, such that the first cross-sectional area is larger than the second cross-sectional area.Type: ApplicationFiled: May 7, 2012Publication date: November 15, 2012Applicant: ALSTOM Technology LtdInventors: Madhavan Poyyapakkam, Anton Winkler, Khawar Syed, Andrea Ciani