Patents by Inventor Weiqun Geng
Weiqun Geng 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: 20180251900Abstract: The invention relates to a device for High Velocity Oxygen Fuel thermal spraying process for coating a component, especially a gas turbine component. The device includes a liquid fuel fired combustion chamber, a de-Laval section, a powder injector block with powder injectors and a barrel all arranged around and along an axis. The powder injector block includes at least four powder injectors arranged in an equal circumferential distance around the axis and an exchangeable hot gas section insert inside the powder injector block designed as a cylindrical bush with at least four openings, the openings being arranged in an equal circumferential distance around the axis in the cylinder, wherein the bush is fixed by the at least four powder injectors extending through said openings.Type: ApplicationFiled: February 20, 2018Publication date: September 6, 2018Applicant: ANSALDO ENERGIA IP UK LIMITEDInventors: Sven OLLIGES, Jeton NIVOKAZI, Benjamin-Timo ZOLLER, Uwe HAARNAGEL, Weiqun GENG
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Publication number: 20160251745Abstract: The invention relates to a device for High Velocity Oxygen Fuel thermal spraying process for coating a component, especially a gas turbine component. The device includes a liquid fuel fired combustion chamber, a de-Laval section, a powder injector block with powder injectors and a barrel all arranged around and along an axis. The powder injector block includes at least four powder injectors arranged in an equal circumferential distance around the axis and an exchangeable hot gas section insert inside the powder injector block designed as a cylindrical bush with at least four openings, the openings being arranged in an equal circumferential distance around the axis in the cylinder, wherein the bush is fixed by the at least four powder injectors extending through said openings.Type: ApplicationFiled: October 10, 2014Publication date: September 1, 2016Applicant: GENERAL ELECTRIC TECHNOLOGY GMBHInventors: Sven OLLIGES, Jeton NIVOKAZI, Benjamin-Timo ZOLLER, Uwe HAARNAGEL, Weiqun GENG
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Publication number: 20160018111Abstract: The invention concerns a method of operating a gas turbine with staged and/or sequential combustion. The burners of a second stage or a second combustor are singularly and sequentially switched on during loading and switched off during de-loading. The total fuel mass flow and the compressor inlet guide vanes are adjusted at the same time to allow controlling gas turbine operation temperatures and engine power with respect to the required CO emission target.Type: ApplicationFiled: July 31, 2015Publication date: January 21, 2016Inventors: Dirk THERKORN, Stefano BERNERO, Mengbin Zhang, Adnan Eroglu, Weiqun Geng
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Patent number: 9170022Abstract: A premix burner is provided for a gas turbine, in the form of a double-cone burner, which has two partial cone shells which are arranged nested one inside the other, forming air inlet ducts between them, through which combustion air from the outside flows into a conical inner space of the premix burner. Linear rows of holes of injection openings, which extend transversely to the flow direction of the combustion air, are arranged on the outer walls of the air inlet ducts and through which a gaseous fuel is injected into the combustion air which flows past transversely to them. A method for reworking such premix burners is also provided.Type: GrantFiled: August 25, 2011Date of Patent: October 27, 2015Assignee: ALSTOM TECHNOLOGY LTDInventors: Frank Grimm, Fulvio Magni, Weiqun Geng, Douglas Anthony Pennell
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Patent number: 8794008Abstract: In a method for the low-CO emissions part load operation of a gas turbine with sequential combustion, the air ratio (?) of the operative burners (9) of the second combustor (15) is kept below a maximum air ratio (?max) at part load In order to reduce the maximum air ratio (?), a series of modifications in the operating concept of the gas turbine are carried out individually or in combination. One modification is an opening of the row of variable compressor inlet guide vanes (14) before engaging the second combustor (15). For engaging the second combustor, the row of variable compressor inlet guide vanes (14) is quickly closed and fuel is introduced in a synchronized manner into the burner (9) of the second combustor (15). A further modification is the deactivating of individual burners (9) at part load.Type: GrantFiled: April 3, 2013Date of Patent: August 5, 2014Assignee: Alstom Technology LtdInventors: Adnan Eroglu, Klaus Knapp, Peter Flohr, Hans Peter Knoepfel, Weiqun Geng
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Patent number: 8434312Abstract: In a method for the low-CO emissions part load operation of a gas turbine with sequential combustion, the air ratio (?) of the operative burners (9) of the second combustor (15) is kept below a maximum air ratio (?max) at part load In order to reduce the maximum air ratio (?), a series of modifications in the operating concept of the gas turbine are carried out individually or in combination. One modification is an opening of the row of variable compressor inlet guide vanes (14) before engaging the second combustor (15). For engaging the second combustor, the row of variable compressor inlet guide vanes (14) is quickly closed and fuel is introduced in a synchronized manner into the burner (9) of the second combustor (15). A further modification is the deactivating of individual burners (9) at part load.Type: GrantFiled: September 23, 2011Date of Patent: May 7, 2013Assignee: ALSTOM Technology Ltd.Inventors: Adnan Eroglu, Klaus Knapp, Peter Flohr, Hans Peter Knöpfel, Weiqun Geng
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Publication number: 20120047898Abstract: A premix burner is provided for a gas turbine, in the form of a double-cone burner, which has two partial cone shells which are arranged nested one inside the other, forming air inlet ducts between them, through which combustion air from the outside flows into a conical inner space of the premix burner. Linear rows of holes of injection openings, which extend transversely to the flow direction of the combustion air, are arranged on the outer walls of the air inlet ducts and through which a gaseous fuel is injected into the combustion air which flows past transversely to them. A method for reworking such premix burners is also provided.Type: ApplicationFiled: August 25, 2011Publication date: March 1, 2012Applicant: ALSTOM TECHNOLOGY LTDInventors: Frank Grimm, Fulvio Magni, Weiqun Geng, Douglas Anthony Pennell
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Publication number: 20120017601Abstract: In a method for the low-CO emissions part load operation of a gas turbine with sequential combustion, the air ratio (?) of the operative burners (9) of the second combustor (15) is kept below a maximum air ratio (?max) at part load In order to reduce the maximum air ratio (?), a series of modifications in the operating concept of the gas turbine are carried out individually or in combination. One modification is an opening of the row of variable compressor inlet guide vanes (14) before engaging the second combustor (15). For engaging the second combustor, the row of variable compressor inlet guide vanes (14) is quickly closed and fuel is introduced in a synchronized manner into the burner (9) of the second combustor (15). A further modification is the deactivating of individual burners (9) at part load.Type: ApplicationFiled: September 23, 2011Publication date: January 26, 2012Inventors: Adnan Eroglu, Klaus Knapp, Peter Flohr, Hans Peter Knöpfel, Weiqun Geng
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Patent number: 7632091Abstract: A premix burner for producing an ignitable fuel/air mixture has a swirl generator with at least two burner shells (B) which complement one another to form a throughflow body, which in each case have a first burner shell section (1) with a partial cone shape and together enclose an axially conically widening swirl space and which mutually define, in the axial cone longitudinal direction, tangential air inlet slots (LS), through which the combustion feed air (L) passes into the swirl space, in which an axially spreading swirl flow forms, and includes fuel feeds which are arranged at least in sections along the tangentially running air inlet slots (LS).Type: GrantFiled: September 6, 2007Date of Patent: December 15, 2009Assignee: ALSTOM Technology Ltd.Inventors: Christian Steinbach, Martin Andrea Von Planta, Thomas Ruck, Weiqun Geng
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Patent number: 7406827Abstract: In a fuel lance by means of which fuels can be injected, via at least two separate passages, into a combustion chamber alternately or simultaneously at an injection location arranged substantially at the lance tip, reliable operation is achieved, without the risk of flashbacks and also without coking, by virtue of the fact that the fuel lance, in addition to fuel, also passes purge air to the injection location, and that the purge air, at the injection location, is routed between the two fuel systems, in such a manner that these systems are shielded from one another by the purge air.Type: GrantFiled: June 27, 2006Date of Patent: August 5, 2008Assignee: ALSTOM Technology LtdInventors: Stefano Bernero, Weiqun Geng, Christian Steinbach, Peter Stuber
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Publication number: 20080163626Abstract: In a fuel lance by means of which fuels can be injected, via at least two separate passages, into a combustion chamber alternately or simultaneously at an injection location arranged substantially at the lance tip, reliable operation is achieved, without the risk of flashbacks and also without coking, by virtue of the fact that the fuel lance, in addition to fuel, also passes purge air to the injection location, and that the purge air, at the injection location, is routed between the two fuel systems, in such a manner that these systems are shielded from one another by the purge air.Type: ApplicationFiled: June 27, 2006Publication date: July 10, 2008Inventors: Stefano Bernero, Weiqun Geng, Christian Steinbach, Peter Stuber
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Publication number: 20080070176Abstract: A premix burner for producing an ignitable fuel/air mixture has a swirl generator with at least two burner shells (B) which complement one another to form a throughflow body, which in each case have a first burner shell section (1) with a partial cone shape and together enclose an axially conically widening swirl space and which mutually define, in the axial cone longitudinal direction, tangential air inlet slots (LS), through which the combustion feed air (L) passes into the swirl space, in which an axially spreading swirl flow forms, and includes fuel feeds which are arranged at least in sections along the tangentially running air inlet slots (LS).Type: ApplicationFiled: September 6, 2007Publication date: March 20, 2008Inventors: Christian Steinbach, Martin Von Planta, Thomas Ruck, Weiqun Geng
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Patent number: 7082768Abstract: In a fuel lance by means of which fuels can be injected, via at least two separate passages, into a combustion chamber alternately or simultaneously at an injection location arranged substantially at the lance tip, reliable operation is achieved, without the risk of flashbacks and also without coking, by virtue of the fact that the fuel lance, in addition to fuel, also passes purge air to the injection location, and that the purge air, at the injection location, is routed between the two fuel systems, in such a manner that these systems are shielded from one another by the purge air.Type: GrantFiled: June 18, 2004Date of Patent: August 1, 2006Assignee: ALSTOM Technology LtdInventors: Stefano Bernero, Weiqun Geng, Christian Steinbach, Peter Stuber
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Publication number: 20050028532Abstract: In a fuel lance by means of which fuels can be injected, via at least two separate passages, into a combustion chamber alternately or simultaneously at an injection location arranged substantially at the lance tip, reliable operation is achieved, without the risk of flashbacks and also without coking, by virtue of the fact that the fuel lance, in addition to fuel, also passes purge air to the injection location, and that the purge air, at the injection location, is routed between the two fuel systems, in such a manner that these systems are shielded from one another by the purge air.Type: ApplicationFiled: June 18, 2004Publication date: February 10, 2005Inventors: Stefano Bernero, Weiqun Geng, Christian Steinbach, Peter Stuber