Patents by Inventor Mirko Ruben Bothien
Mirko Ruben Bothien 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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Patent number: 11454398Abstract: A mixer having a housing, a duct within the housing, a first and a second injector arranged to inject a fluid at a centre zone of the duct, a third and a fourth injector arranged to inject the fluid at a wall zone of the duct. The first/third injectors are at a distance D1=v/2f1 or odd integer multiples of it from the second/fourth injectors in the absence of an acoustic node between them, or at a distance D1=?conv=v/f1 or full wave length integer multiples of it in the presence of an acoustic node between them. Advantageously f1 is greater than f2.Type: GrantFiled: February 12, 2021Date of Patent: September 27, 2022Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Mirko Ruben Bothien, Alessandro Scarpato
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Patent number: 11242806Abstract: A method is disclosed for controlling fuel injection in a reheat combustor of a gas turbine combustor assembly including a combustor casing defining a gas flow channel and a plurality of injection nozzles distributed in or around the gas flow channel; the method includes the step of distributing fuel among the injection nozzles according to a non-uniform distribution pattern.Type: GrantFiled: November 20, 2017Date of Patent: February 8, 2022Assignee: POWER SYSTEMS MFG., LLCInventors: Mirko Ruben Bothien, Douglas Pennell, Peter Stuttaford
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Publication number: 20210172606Abstract: A mixer having a housing, a duct within the housing, a first and a second injector arranged to inject a fluid at a centre zone of the duct, a third and a fourth injector arranged to inject the fluid at a wall zone of the duct. The first/third injectors are at a distance D1=v/2f1 or odd integer multiples of it from the second/fourth injectors in the absence of an acoustic node between them, or at a distance D1=?conv=v/f1 or full wave length integer multiples of it in the presence of an acoustic node between them. Advantageously f1 is greater than f2.Type: ApplicationFiled: February 12, 2021Publication date: June 10, 2021Applicant: Ansaldo Energia Switzerland AGInventors: Mirko Ruben Bothien, Alessandro Scarpato
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Patent number: 10718520Abstract: The invention concerns a damper arrangement for reducing combustion-chamber pulsation arising inside a gas turbine, wherein the gas turbine includes at least one compressor, a primary combustor which is connected downstream to the compressor, and the hot gases of the primary combustor are admitted at least to an intermediate turbine or directly or indirectly to a secondary combustor. The hot gases of the secondary combustor are admitted to a further turbine or directly or indirectly to an energy recovery, wherein at least one combustor is arranged in a can-architecture. At least one combustor liner includes air passages, wherein at least one of the air passages is formed as a damper neck. The damper neck being actively connected to a damper volume, and the damper volume is part of a connecting duct extending between a compressor air plenum and the combustor.Type: GrantFiled: October 24, 2013Date of Patent: July 21, 2020Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Mirko Ruben Bothien, Jaan Hellat, Bruno Schuermans
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Patent number: 10546070Abstract: The damper arrangement includes a plurality of interconnected volumes and a plurality of necks for connecting the damper to a combustion chamber at a plurality of contact points. The plurality of necks are connected to the plurality of volumes.Type: GrantFiled: September 17, 2014Date of Patent: January 28, 2020Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Jaan Hellat, Mirko Ruben Bothien, Bruno Schuermans, Andreas Huber, Nicolas Noiray
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Patent number: 10451283Abstract: A sequential combustor arrangement and method are disclosed which can include a first burner, a first combustion chamber, a mixer for admixing a dilution gas to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The mixer can include at least one injection opening in the mixer wall for admixing the dilution gas to cool the hot flue gases leaving the first combustion chamber. Further, the mixer can include a damper with a damper volume and a neck connecting the damper volume to the mixer, for modulating and damping pressure pulsations inside the mixer.Type: GrantFiled: January 27, 2016Date of Patent: October 22, 2019Assignee: Ansaldo Energia Switzerland AGInventors: Mirko Ruben Bothien, Devis Tonon, Bruno Schuermans
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Patent number: 10330319Abstract: The invention refers to a sequential combustor arrangement including a first burner, a first combustion chamber, a mixer for admixing a dilution gas to the hot gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. The mixer includes a plurality of injection pipes pointing inwards from the side walls of the mixer for admixing the dilution gas to cool the hot flue gases leaving the first combustion chamber with a low pressure drop. The disclosure further refers to a method for operating a gas turbine with such a combustor arrangement.Type: GrantFiled: April 22, 2015Date of Patent: June 25, 2019Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Michael Duesing, Luis Tay Wo Chong Hilares, Mirko Ruben Bothien, Jaan Hellat, Bruno Schuermans
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Patent number: 10323575Abstract: The invention concerns a gas turbine fuel pipe, having a fuel line, the fuel line having a fuel line volume, a fuel line outer wall and an opening in the fuel line outer wall, a damper having a damper volume and a damper outer wall and attached in fluid communication with the fuel line, wherein the damper covers the opening in the fuel line outer wall, and a perforated lining extending across at least part of the opening in the fuel line outer wall.Type: GrantFiled: December 18, 2015Date of Patent: June 18, 2019Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Anders Martin Axel Wickström, Devis Tonon, Mirko Ruben Bothien
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Patent number: 10323574Abstract: The invention refers to a combustor arrangement of a gas turbine engine or power plant, having at least one combustion chamber, at least one mixer for admixing a dilution medium or air to the hot gas flow leaving the combustion chamber. The mixer is configured to guide combustion gases in a hot gas flow path extending downstream of the combustion chamber, wherein the mixer includes a plurality of injection pipes pointing inwards from the side walls of the mixer for admixing the dilution medium or air to cool the hot gas flow leaving combustion chamber. The mixer includes at least one dilution air plenum having at least one pressure-controlled compartment which is directly or indirectly connected to at least one injection pipe.Type: GrantFiled: December 18, 2015Date of Patent: June 18, 2019Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Devis Tonon, Mirko Ruben Bothien, Luis Tay Wo Chong Hilares
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Publication number: 20190154263Abstract: A method is disclosed for controlling fuel injection in a reheat combustor of a gas turbine combustor assembly including a combustor casing defining a gas flow channel and a plurality of injection nozzles distributed in or around the gas flow channel; the method includes the step of distributing fuel among the injection nozzles according to a non-uniform distribution pattern.Type: ApplicationFiled: November 20, 2017Publication date: May 23, 2019Inventors: Mirko Ruben BOTHIEN, Douglas PENNELL, Peter STUTTAFORD
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Patent number: 10267525Abstract: A combustor arrangement for a gas turbine includes a first burner, a first combustion chamber, a mixer for admixing a dilution gas to the gases leaving the first combustion chamber during operation, a second burner, and a second combustion chamber arranged sequentially in a fluid flow connection. These elements of the combustor arrangement are arranged in a row to form a flow path extending between the first combustion chamber and the second burner. The combustor arrangement includes acentral lance body arranged inside the flow path and extending from the first burner through the first combustion chamber into the mixer and into the second burner, wherein the lance body includes a fuel duct for providing fuel for the first burner and/or for the second burner.Type: GrantFiled: October 28, 2015Date of Patent: April 23, 2019Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Douglas Anthony Pennell, Urs Benz, Adnan Eroglu, Ewald Freitag, Mirko Ruben Bothien, Andrea Ciani
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Patent number: 10260745Abstract: The invention relates to a damper for reducing pulsations in a gas turbine, which includes an enclosure, a main neck extending from the enclosure, a spacer plate disposed in the enclosure to separate the enclosure into a first cavity and a second cavity and an inner neck with a first end and a second end, extending through the spacer plate to interconnect the first cavity and the second cavity. The first end of the inner neck remains in the first cavity and the second end remains in the second cavity. A flow deflecting member is disposed proximate the second end of the inner neck to deflect a flow passing through the inner neck. With the solution of the present invention, as a damper according to embodiments of the present invention operates, flow field hence damping characteristic in the second cavity constant regardless the adjustment of the spacer plate in the enclosure.Type: GrantFiled: January 10, 2018Date of Patent: April 16, 2019Assignee: ANSALDO ENERGIA IP UK LIMITEDInventors: Mirko Ruben Bothien, Nicolas Noiray, Bruno Schuermans
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Patent number: 10247420Abstract: A method is disclosed for operating an axially staged mixer arrangement with dilution air or dilution gas injection in connection with a combustion arrangement of a gas turbine engine or turbo machinery, having at least one combustion chamber, at least one mixer arrangement for admixing air or gas portions to the hot gas flow leaving the combustion chamber. The mixer arrangement includes a plurality of injectors for admixing air portions to cool at least the hot gas flow leaving combustion chamber. The spacing between the last injection location of acting injectors and at least one subsequently arranged dilution air injection, inside of the mixer arrangement in the hot gas flow, where there is no node between the injection locations, corresponds to a distance equal or approximating to half of convective wave length.Type: GrantFiled: December 16, 2015Date of Patent: April 2, 2019Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Mirko Ruben Bothien, Luis Tay Wo Chong Hilares, Adnan Eroglu, Bruno Schuermans, Michael Düsing
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Patent number: 10228134Abstract: The present invention generally relates to a gas turbine and more in particular it is related to a damper assembly for a combustion chamber of a gas turbine. According to preferred embodiments, the present solution provides a damper assembly including protrusions on a wall of the neck. These protrusions result in a side wall reactance to the acoustic field that has the effect of decreasing the effective speed of sound in the neck. The decrease of the effective speed of sound in the neck is equivalent to an increase of the effective neck length.Type: GrantFiled: June 18, 2015Date of Patent: March 12, 2019Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Devis Tonon, Mirko Ruben Bothien
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Patent number: 10125987Abstract: A damper for a gas turbine combustion chamber as shown in FIG. 1 includes a damper volume wall and a main neck. The damper volume wall defines a damper volume inside the damper volume wall. The main neck includes a main neck wall defining a main neck volume inside the main neck wall. The main neck is associated with the damper volume for fluid communication between the damper volume and the gas turbine combustion chamber. In addition, the damper includes a gap between the main neck wall and the damper volume wall. The main neck defines a main neck axis. For example, the gap is a second neck, and in further embodiments, multiple damper volumes are provided.Type: GrantFiled: December 3, 2015Date of Patent: November 13, 2018Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Devis Tonon, Mirko Ruben Bothien
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Publication number: 20180252412Abstract: A mixer having a housing, a duct within the housing, a first and a second injector arranged to inject a fluid at a centre zone of the duct, a third and a fourth injector arranged to inject the fluid at a wall zone of the duct. The first/third injectors are at a distance D1=v/2f1 or odd integer multiples of it from the second/fourth injectors in the absence of an acoustic node between them, or at a distance D1=?conv=v/f1 or full wave length integer multiples of it in the presence of an acoustic node between them. Advantageously f1 is greater than f2.Type: ApplicationFiled: February 28, 2018Publication date: September 6, 2018Applicant: ANSALDO ENERGIA SWITZERLAND AGInventors: Mirko Ruben BOTHIEN, Alessandro SCARPATO
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Patent number: 10036327Abstract: The invention relates to a damper for reducing the pulsations in a chamber of a gas turbine. The damper includes a resonator cavity and a neck in flow communication with the resonator cavity and the chamber. The neck includes a mouth to communicate with the chamber. The air flow inside the chamber flows across the mouth of the neck. The neck is so configured that the longitudinal axis of its mouth is angled 0-90° relative to the direction of the air flow inside the chamber. The damper of this invention may effectively alleviate the detrimental effect of the grazing flow and thus it enables the placement of the damper also at locations where strong grazing flows are present.Type: GrantFiled: October 24, 2014Date of Patent: July 31, 2018Assignee: ANSALDO ENERGIA SWITZERLAND AGInventors: Devis Tonon, Mirko Ruben Bothien, Franklin Marie Genin, Douglas Anthony Pennell
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Patent number: 9970659Abstract: The invention relating to a A damper for combustion oscillation damping for a gas turbine, includes a resonator cavity with a box or cylinder shape, a neck in flow communication with the resonator cavity and a combustion chamber. The length Lneck of the neck is equal or greater than a maximum distance lmax that a hot gas ingested from the combustion chamber reaches in the neck. The maximum distance lmax is determined according to the following equation: l max = ? t 1 t 2 ? U - p ^ ? ? ? U ? ? ? ? sin ? ( ? ? ? t ) ? ? d ? ? t . With the solution of the present invention, the damper used to damping combustion oscillation may prevent hot gas ingestion during normal operations by uniquely determining the dimensions of the neck connecting the resonator cavity and the combustion chamber.Type: GrantFiled: July 28, 2014Date of Patent: May 15, 2018Assignee: ANSALDO ENERGIA IP UK LIMITEDInventors: Bruno Schuermans, Mirko Ruben Bothien
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Patent number: 9897314Abstract: The invention relates to a damper for reducing pulsations in a gas turbine, which includes an enclosure, a main neck extending from the enclosure, a spacer plate disposed in the enclosure to separate the enclosure into a first cavity and a second cavity and an inner neck with a first end and a second end, extending through the spacer plate to interconnect the first cavity and the second cavity. The first end of the inner neck remains in the first cavity and the second end remains in the second cavity. A flow deflecting member is disposed proximate the second end of the inner neck to deflect a flow passing through the inner neck. With the solution of the present invention, as a damper according to embodiments of the present invention operates, flow field hence damping characteristic in the second cavity constant regardless the adjustment of the spacer plate in the enclosure.Type: GrantFiled: May 16, 2014Date of Patent: February 20, 2018Assignee: ANSALDO ENERGIA IP UK LIMITEDInventors: Mirko Ruben Bothien, Nicolas Noiray, Bruno Schuermans
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Patent number: 9816708Abstract: A method for operating a combustion device includes supplying a fuel and an oxidizer into the combustion device and burning them. According to the method, during at least a part of a transient operation, an additional fluid is supplied together with the fuel, and its amount is regulated to counteract combustion pulsations.Type: GrantFiled: August 23, 2012Date of Patent: November 14, 2017Assignee: ANSALDO ENERGIA IP UK LIMITEDInventors: Mirko Ruben Bothien, Martin Zajadatz, Douglas Anthony Pennell