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).

  • Publication number: 20180251900
    Abstract: 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: Application
    Filed: February 20, 2018
    Publication date: September 6, 2018
    Applicant: ANSALDO ENERGIA IP UK LIMITED
    Inventors: Sven OLLIGES, Jeton NIVOKAZI, Benjamin-Timo ZOLLER, Uwe HAARNAGEL, Weiqun GENG
  • Publication number: 20160251745
    Abstract: 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: Application
    Filed: October 10, 2014
    Publication date: September 1, 2016
    Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
    Inventors: Sven OLLIGES, Jeton NIVOKAZI, Benjamin-Timo ZOLLER, Uwe HAARNAGEL, Weiqun GENG
  • Publication number: 20160018111
    Abstract: 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: Application
    Filed: July 31, 2015
    Publication date: January 21, 2016
    Inventors: Dirk THERKORN, Stefano BERNERO, Mengbin Zhang, Adnan Eroglu, Weiqun Geng
  • Patent number: 9170022
    Abstract: 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: Grant
    Filed: August 25, 2011
    Date of Patent: October 27, 2015
    Assignee: ALSTOM TECHNOLOGY LTD
    Inventors: Frank Grimm, Fulvio Magni, Weiqun Geng, Douglas Anthony Pennell
  • Patent number: 8794008
    Abstract: 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: Grant
    Filed: April 3, 2013
    Date of Patent: August 5, 2014
    Assignee: Alstom Technology Ltd
    Inventors: Adnan Eroglu, Klaus Knapp, Peter Flohr, Hans Peter Knoepfel, Weiqun Geng
  • Patent number: 8434312
    Abstract: 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: Grant
    Filed: September 23, 2011
    Date of Patent: May 7, 2013
    Assignee: ALSTOM Technology Ltd.
    Inventors: Adnan Eroglu, Klaus Knapp, Peter Flohr, Hans Peter Knöpfel, Weiqun Geng
  • Publication number: 20120047898
    Abstract: 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: Application
    Filed: August 25, 2011
    Publication date: March 1, 2012
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventors: Frank Grimm, Fulvio Magni, Weiqun Geng, Douglas Anthony Pennell
  • Publication number: 20120017601
    Abstract: 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: Application
    Filed: September 23, 2011
    Publication date: January 26, 2012
    Inventors: Adnan Eroglu, Klaus Knapp, Peter Flohr, Hans Peter Knöpfel, Weiqun Geng
  • Patent number: 7632091
    Abstract: 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: Grant
    Filed: September 6, 2007
    Date of Patent: December 15, 2009
    Assignee: ALSTOM Technology Ltd.
    Inventors: Christian Steinbach, Martin Andrea Von Planta, Thomas Ruck, Weiqun Geng
  • Patent number: 7406827
    Abstract: 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: Grant
    Filed: June 27, 2006
    Date of Patent: August 5, 2008
    Assignee: ALSTOM Technology Ltd
    Inventors: Stefano Bernero, Weiqun Geng, Christian Steinbach, Peter Stuber
  • Publication number: 20080163626
    Abstract: 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: Application
    Filed: June 27, 2006
    Publication date: July 10, 2008
    Inventors: Stefano Bernero, Weiqun Geng, Christian Steinbach, Peter Stuber
  • Publication number: 20080070176
    Abstract: 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: Application
    Filed: September 6, 2007
    Publication date: March 20, 2008
    Inventors: Christian Steinbach, Martin Von Planta, Thomas Ruck, Weiqun Geng
  • Patent number: 7082768
    Abstract: 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: Grant
    Filed: June 18, 2004
    Date of Patent: August 1, 2006
    Assignee: ALSTOM Technology Ltd
    Inventors: Stefano Bernero, Weiqun Geng, Christian Steinbach, Peter Stuber
  • Publication number: 20050028532
    Abstract: 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: Application
    Filed: June 18, 2004
    Publication date: February 10, 2005
    Inventors: Stefano Bernero, Weiqun Geng, Christian Steinbach, Peter Stuber