Patents by Inventor Christian Steinbach

Christian Steinbach 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).

  • 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: 20060144049
    Abstract: In a method for reducing the NOx emissions from a burner arrangement comprising a plurality of burners (B1, . . . , Bn), in particular in a gas turbine, which burners (B1, . . . , Bn) are operated in parallel and each burner supplied fuel by means of combustion air to form a flame (F1, . . . , Fn), an effective drop is achieved in a simple way by virtue of the fact that at a predetermined time the flame temperatures of individual burners (B1, . . . , Bn) or burner groups or differences between the flame temperatures of individual burners (B1, . . . , Bn) or burner groups are measured directly or indirectly. The fuel supply to those burners or burner groups whose flame temperature exceeds a predetermined value for the flame temperature is selectively throttled in order to homogenize the flame temperatures of the burners (B1, . . . , Bn).
    Type: Application
    Filed: January 24, 2006
    Publication date: July 6, 2006
    Applicant: ALSTOM TECHNOLOGY LTD.
    Inventors: Ken-Yves Haffner, Douglas Pennell, Christian Steinbach
  • Patent number: 6901760
    Abstract: An aerodynamically stabilized premixing burner includes a swirl generator for the production of a rotating combustion air flow, and a device for the introduction of at least one fuel into this combustion air flow. The burner is advantageously provided with a device for the introduction of an axial air flow into the center of the generated rotational flow. This axial air flow is controllable in order to affect the position and intensity of the flame-stabilizing recirculation zone at the burner mouth.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: June 7, 2005
    Assignee: Alstom Technology LTD
    Inventors: Rolf Dittmann, Christian Steinbach
  • 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
  • Publication number: 20040139748
    Abstract: An aerodynamically stabilized premixing burner includes a swirl generator for the production of a rotating combustion air flow, and a device for the introduction of at least one fuel into this combustion air flow. The burner is advantageously provided with a device for the introduction of an axial air flow into the center of the generated rotational flow. This axial air flow is controllable in order to affect the position and intensity of the flame-stabilizing recirculation zone at the burner mouth.
    Type: Application
    Filed: September 22, 2003
    Publication date: July 22, 2004
    Applicant: ALSTOM (Switzerland) Ltd.
    Inventors: Rolf Dittmann, Christian Steinbach
  • Publication number: 20040075003
    Abstract: A device and method for atomizing a liquid medium, including an electrically conductive nozzle body with an internal volume for holding the liquid medium, at least one nozzle opening as well as a high-voltage electrode arranged inside the internal volume coaxially to a longitudinal axis of the nozzle body. The high-voltage electrode is provided in the area of its greatest lateral expansion with a circumferential, sharp edge that extends at a small distance to the nozzle body in order to be able to bring about the electrostatic charging of the passing liquid medium. This construction enables the electrostatic atomization in a simple manner even for multi-hole nozzles, so that the electrostatic atomization also can be used in the field of gas turbine technology for improving the injection in the start-up and partial load range.
    Type: Application
    Filed: November 13, 2003
    Publication date: April 22, 2004
    Applicant: ALSTOM (Switzerland) Ltd.
    Inventors: Uwe Leuteritz, Bruno Schuermans, Christian Steinbach, Wolfgang Weisenstein
  • Patent number: 6679061
    Abstract: Described is a premix burner arrangement as well as a method for operating the same, comprising a pilot fuel feeding means for operating a combustion chamber of a gas turbine arrangement, a premix burner, wherein at least one fuel addition unit as well as supply air openings have been provided in such a way that gaseous and/or liquid fuel can be mixed with combustion supply air inside the premix burner and form a fuel/air mixture, which exits from the premix burner downstream in the direction towards the combustion chamber positioned after the premix burner arrangement and which can be ignited inside the combustion chamber in the form of a spatially largely stationary flame.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: January 20, 2004
    Assignee: Alstom Technology Ltd.
    Inventors: Christian Steinbach, Timothy Albert Griffin, Peter Jansohn, Thomas Ruck
  • Publication number: 20020189257
    Abstract: Described is a premix burner arrangement as well as a method for operating the same, comprising a pilot fuel feeding means for operating a combustion chamber of a gas turbine arrangement, a premix burner, wherein at least one fuel addition unit as well as supply air openings have been provided in such a way that gaseous and/or liquid fuel can be mixed with combustion supply air inside the premix burner and form a fuel/air mixture, which exits from the premix burner downstream in the direction towards the combustion chamber positioned after the premix burner arrangement and which can be ignited inside the combustion chamber in the form of a spatially largely stationary flame.
    Type: Application
    Filed: November 26, 2001
    Publication date: December 19, 2002
    Inventors: Christian Steinbach, Timothy Albert Griffin, Peter Jansohn, Thomas Ruck
  • Publication number: 20020124549
    Abstract: An aerodynamically stabilized premix burner essentially comprises a swirl generator (100) for generating a rotating combustion air flow (141), and means for introducing at least one fuel (142) into said combustion air flow. Furthermore, the burner is equipped with means (112) for introducing an axial air flow into the center of the generated rotational flow (144). According to the invention, this axial flow can be controlled, thus enabling an influence on the position and intensity of a flame stabilizing recirculation zone (123).
    Type: Application
    Filed: October 11, 2001
    Publication date: September 12, 2002
    Inventors: Rolf Dittmann, Christian Steinbach
  • Publication number: 20020063176
    Abstract: A device and method for atomizing a liquid medium, including an electrically conductive nozzle body with an internal volume for holding the liquid medium, at least one nozzle opening as well as a high-voltage electrode arranged inside the internal volume coaxially to a longitudinal axis of the nozzle body. The high-voltage electrode is provided in the area of its greatest lateral expansion with a circumferential, sharp edge that extends at a small distance to the nozzle body in order to be able to bring about the electrostatic charging of the passing liquid medium. This construction enables the electrostatic atomization in a simple manner even for multi-hole nozzles, so that the electrostatic atomization also can be used in the field of gas turbine technology for improving the injection in the start-up and partial load range.
    Type: Application
    Filed: October 5, 2001
    Publication date: May 30, 2002
    Inventors: Uwe Leuteritz, Bruno Schuermans, Christian Steinbach, Wolfgang Weisenstein
  • Patent number: 6378787
    Abstract: A novel combined pressure atomizing nozzle for gas-turbine burners is provided, with which an improved adaptation of the atomizing quality of liquids to the respective load conditions, i.e. good premixing over the entire load range, can be realized. To this end, the pressure atomizing nozzle comprises a nozzle body (1) having at least two separate feed passages (7, 12) for at least one liquid (14, 29, 31) to be atomized. The first feed passage (7) is at least partly enclosed by the second feed passage (12) and is connected downstream to an outer space (5) via a discharge orifice (11). The second feed passage (12) is likewise connected to the outer space (5), in which case the second feed passage (12) has at least two discharge orifices (13) to the outer space (5).
    Type: Grant
    Filed: September 14, 1998
    Date of Patent: April 30, 2002
    Assignee: Alstom
    Inventors: Franz B├╝chi, Uwe Hoferer, Peter Jansohn, Christian Steinbach
  • Patent number: 6336806
    Abstract: In a method for burning a liquid fuel in a combustion system (10) which comprises a combustion chamber (11) and at least one injection nozzle (13) through which liquid fuel is injected into the combustion chamber (11) in the form of a fuel spray (16) and is burnt there with combustion air being added, disturbance-free operation in a simple manner is distinguished in that, in order to actively suppress hydrodynamic instabilities in the combustion chamber (11), the injected fuel spray (16) is modulated by having an electrical voltage applied to it during the injection process, governed by a selected time function.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: January 8, 2002
    Assignee: Alstom (Switzerland) Ltd.
    Inventors: Christian Oliver Paschereit, Wolfgang Polifke, Christian Steinbach
  • Patent number: 6331109
    Abstract: A premix burner consisting essentially of a swirl generator for a combustion air stream or another gaseous oxidizing medium and of conduits for injecting fuel into the swirl flow thus generated. As a result of a discontinuous cross-sectional widening at the transition to the combustion space, the swirl flow bursts open and a backflow bubble is formed, which serves for flame stabilization. For use under extreme thermal conditions, the burner front is provided with a heat shield which is fastened to a carrier structure in such a way as to allow, as unimpeded as possible, differential thermal expansions. The carrier structure is preferably provided with orifices, through which cooling air for the impact cooling of the heat shield flows. In a preferred variant, the fuel gas supply is designed as pipes which are led through orifices of the swirl generator without any fixed connection. As a result of this design, thermal stresses in the material of the burner are avoided as far as possible.
    Type: Grant
    Filed: July 24, 2000
    Date of Patent: December 18, 2001
    Assignee: Alstom (Switzerland) Ltd.
    Inventors: Bettina Paikert, Christian Steinbach, Richard Straessle, Dieter Winkler
  • Patent number: 6102692
    Abstract: In a burner for a heat generator, having a swirl generator (100) arranged upstream of the combustion zone (30), fuel injection is connected with the combustion air (115), swirled in the swirl generator, in such a way that the injection angle of the fuel jet (105) belonging to the fuel nozzle (104) corresponds approximately to the setting angle of the sectional bodies forming the swirl generator relative to the axis (60) of the burner.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: August 15, 2000
    Assignee: ABB Alstom Power (Switzerland) Ltd
    Inventors: Klaus Dobbeling, Christian Steinbach, Thomas Ruck
  • Patent number: 6045351
    Abstract: In a method of operating a burner of a heat generator, in which the burner essentially includes a swirl generator for a combustion-air flow, a mechanism for injecting at least one fuel into the combustion-air flow, and a number of transition passages for passing a flow formed in the swirl generator into a mixing tube arranged downstream of the transition passages, a predetermined quantity of a second fuel having a good ignition quality is injected into the reaction zone in order to stabilize the combustion in the combustion space.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: April 4, 2000
    Assignee: ABB Alstom Power (Switzerland) Ltd
    Inventors: Klaus Dobbeling, Christian Steinbach
  • Patent number: 6045058
    Abstract: The invention relates to a two-stage pressure atomizer nozzle with a nozzle body (30) having a mixing chamber (39) which is connected to an outside space via a nozzle outlet bore (33), and with a first feed duct (42) with a feed bore (41) for a liquid (37) to be atomized, through which feed bore said liquid (37) can be fed, free of swirling and under pressure, at least one further feed duct (36) for a portion of the liquid (37) to be atomized or for a second liquid (37') to be atomized opening into the chamber (39), through which feed duct said liquid (37, 37') can be fed under pressure and with swirling. The feed bore (41) of the first feed duct (42) lies on one axis (34) with the nozzle outlet bore (33). It is defined in that the outlet-side diameter (d.sub.a) of the nozzle outlet bore (33) is at most as large as the diameter (d.sub.z) of the feed bore (41) and the length (L) of the nozzle outlet bore (33) is at least twice to at most ten times the outlet-side diameter (d.sub.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: April 4, 2000
    Assignee: ABB Research Ltd.
    Inventors: Klaus Dobbeling, Christian Steinbach, Martin Valk
  • Patent number: 6036479
    Abstract: The object of the invention is to provide a two-stage pressure atomizer nozzle for at least one liquid to be atomized, with which two-stage pressure atomizer nozzle improved liquid distribution in the exterior space of the pressure atomizer nozzle, in particular improved fuel distribution in a premix burner, can be achieved. To this end, the pressure atomizer nozzle has a nozzle head (4) connecting the outer and inner tubes (2, 3) to one another downstream. At least two separate turbulence and/or swirl chambers (9, 10, 11, 12) are arranged in the nozzle head (4). Each of these turbulence and/or swirl chambers (9, 10, 11, 12) is connected to the second feed passage (6) via at least one swirl passage (16), to the first feed passage (5) via at least one turbulence-generator passage (15) and to the exterior space (18) of the nozzle body (1) via a discharge opening (17).
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: March 14, 2000
    Assignee: ABB Research Ltd.
    Inventors: Peter Dubach, Jonathan Lloyd, Thomas Sattelmayer, Christian Steinbach
  • Patent number: 5934555
    Abstract: A pressure atomizer nozzle comprises a nozzle body (30) in which is formed a turbulence and/or swirl chamber (39) and having a nozzle bore (33). At least one first feed channel (41, 41a) for the liquid (37) to be atomized connects to the chamber as a first feed stage for feeding said liquid (37) under pressure. At least one second feed channel (38) connects to the chamber as a second feed stage for feeding part of the liquid (37) to be atomized or for feeding a second liquid (37') to be atomized. The second feed channel feeds liquid into the chamber under pressure and with a swirl. The two stage pressure atomizer nozzle allows, for example, simple adaptation of the fuel spray cone angle to the respective operating conditions of a gas turbine burner.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: August 10, 1999
    Assignee: ABB Research Ltd.
    Inventors: Klaus Dobbeling, Peter Jansohn, Hans Peter Knopfel, Christian Steinbach
  • Patent number: 5588826
    Abstract: In a burner which consists of a swirl generator (100) on the oncoming-flow side, the flow (40) formed herein is passed smoothly into a mixing section (220). This is done with the aid of a transition geometry which is present at the start of the mixing tube (220) and consists of transition passages (201) which cover sectors of the end face of the mixing section (220), in accordance with the number of sectional bodies of the swirl generator (100), and run helically in the direction of flow. On the outflow side of these transition passages (201), prefilming bores (21) pass through the mixing section (220), which prefilming bores (21) initiate an increase in the flow velocity along the tube wall. Adjoining the mixing section (220) is a combustion chamber (30) in which a backflow zone (50) forms in the region of the jump in cross-section between mixing section (220) and combustion chamber (30).
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: December 31, 1996
    Assignee: ABB Management AG
    Inventors: Klaus Dobbeling, Jurgen Haumann, Hans P. Knopfel, Bettina Paikert, Thomas Ruck, Thomas Sattelamayer, Christian Steinbach
  • Patent number: 5586878
    Abstract: In a premixing burner of the double-cone design for operating an internal combustion engine, a combustion chamber of a gas-turbine group, or a firing plant, having a high-pressure atomization nozzle (3), arranged at the cone apex, for atomizing liquid fuel, which high-pressure atomization nozzle (3) consists of a nozzle body in which at least one feed passage (24) is arranged for the liquid fuel (12) to be atomized, which can be fed at a pressure greater than 100 bar, and this feed passage (24), with or without a turbulence chamber (25) arranged in between, is connected via at least two nozzle bores (18) to the interior space (14) of the burner, the nozzle bores (18) are aligned with the zones of high air velocity in the burner, and the angle (.beta.) between the fuel-droplet spray (4) and the longitudinal axis (5) of the burner is at least as large as the cone half angle (.beta.) between the sectional cone bodies (1, 2) and the longitudinal axis (5) of the burner.
    Type: Grant
    Filed: November 2, 1995
    Date of Patent: December 24, 1996
    Assignee: ABB Research Ltd.
    Inventors: Klaus Dobbeling, Johannes Santner, Christian Steinbach