Patents by Inventor Armin de Lazzer
Armin de Lazzer 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: 10436030Abstract: A steam turbine having a cooling option, in which steam is taken from the flow channel, the steam cooling the thrust-compensating intermediate floor, being mixed with a small amount of live steam and being returned to the flow channel. A method cools the steam turbine, wherein steam is extracted from the high-pressure region and is fed to a space between the thrust-compensating partition wall and inner casing, wherein steam from the space between the thrust-compensating partition wall and the inner casing is fed via a first cross feedback passage to the high-pressure region.Type: GrantFiled: August 19, 2015Date of Patent: October 8, 2019Assignee: Siemens AktiengesellschaftInventors: Jan Walkenhorst, Uwe Zander, Armin de Lazzer
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Patent number: 10392941Abstract: A turbomachine, in particular a steam turbine, has a shield and a coolant supply which causes cold intermediate superheater steam to flow onto the rotor, wherein additionally supply holes are arranged in the shield, which holes bring part of the hot inflow steam into the cooling region between the shield and the rotor, in order to thus improve mixing so as to raise the temperature of the rotor at this thermally loaded point, such that in the event of a fault (e.g., failure of the coolant line) the resulting change in temperature is moderate.Type: GrantFiled: October 5, 2015Date of Patent: August 27, 2019Assignee: Siemens AktiengesellschaftInventor: Armin de Lazzer
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Patent number: 9835034Abstract: A method for detuning a rotor-blade cascade of a turbomachine having a plurality of rotor blades includes: a) establishing at least one target natural frequency for at least one vibration mode; b) setting up a value table having discrete mass values and radial center-of-gravity positions, and determining respective natural frequency; c) measuring the mass and radial center-of-gravity position of one of the rotor blades; d) determining an actual natural frequency by interpolating the measured mass and radial center-of-gravity position in the value table; e) if actual natural frequency is outside a tolerance around target natural frequency, selecting a value pair that at least approximates target natural frequency, and removing material from the rotor blade in such a way that mass and radial center-of-gravity position correspond to the value pair; f) repeating steps c) to e) until actual natural frequency is within the tolerance around target natural frequency.Type: GrantFiled: January 23, 2014Date of Patent: December 5, 2017Assignee: Siemens AktiengesellschaftInventors: Thomas Gronsfelder, Jan Walkenhorst, Armin de Lazzer
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Publication number: 20170298738Abstract: A turbomachine, in particular a steam turbine, has a shield and a coolant supply which causes cold intermediate superheater steam to flow onto the rotor, wherein additionally supply holes are arranged in the shield, which holes bring part of the hot inflow steam into the cooling region between the shield and the rotor, in order to thus improve mixing so as to raise the temperature of the rotor at this thermally loaded point, such that in the event of a fault (e.g., failure of the coolant line) the resulting change in temperature is moderate.Type: ApplicationFiled: October 5, 2015Publication date: October 19, 2017Applicant: Siemens AktiengesellschaftInventor: Armin de Lazzer
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Publication number: 20170234131Abstract: A steam turbine having a cooling option, in which steam is taken from the flow channel, the steam cooling the thrust-compensating intermediate floor, being mixed with a small amount of live steam and being returned to the flow channel. A method cools the steam turbine, wherein steam is extracted from the high-pressure region and is fed to a space between the thrust-compensating partition wall and inner casing, wherein steam from the space between the thrust-compensating partition wall and the inner casing is fed via a first cross feedback passage to the high-pressure region.Type: ApplicationFiled: August 19, 2015Publication date: August 17, 2017Applicant: Siemens AktiengesellschaftInventors: Jan Walkenhorst, Uwe Zander, Armin de Lazzer
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Patent number: 9719360Abstract: A turbomachine component having a main body and a multilayer coating, which is applied directly to the main body is provided. The multilayer coating is at least 5 ?m and at most 35 ?m thick and has a plurality of layers applied directly one on top of the other, wherein the layer applied directly to the main body is an adhesion promoting layer, which comprises chromium nitride, and at least one of the remaining layers comprises a hard material.Type: GrantFiled: April 2, 2013Date of Patent: August 1, 2017Assignee: SIEMENS AKTIENGESELLSCHAFTInventors: Jochen Barnikel, Christian Bohme, Torsten-Ulf Kern, Jorg Schurhoff, Shilun Sheng, Armin de Lazzer
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Publication number: 20170016336Abstract: A turbine blade has a blade, a blade root, and a cover plate between the blade root and the blade. The cover plate has a parallelogram with a front surface and a rear surface and a first bearing surface and a second bearing surface. The blade has a profiled design and a leading edge and a trailing edge, the leading edge pointing towards the front surface and the trailing edge pointing towards the rear surface. The front surface has a curvature in at least some sections in order to prevent a plastic deformation during operation.Type: ApplicationFiled: March 3, 2015Publication date: January 19, 2017Applicant: Siemens AktiengesellschaftInventor: Armin de Lazzer
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Publication number: 20160010461Abstract: A method for detuning a rotor-blade cascade of a turbomachine having a plurality of rotor blades includes: a) establishing at least one target natural frequency for at least one vibration mode; b) setting up a value table having discrete mass values and radial centre-of-gravity positions, and determining respective natural frequency; c) measuring the mass and radial centre-of-gravity position of one of the rotor blades; d) determining an actual natural frequency by interpolating the measured mass and radial centre-of-gravity position in the value table; e) if actual natural frequency is outside a tolerance around target natural frequency, selecting a value pair that at least approximates target natural frequency, and removing material from the rotor blade in such a way that mass and radial centre-of-gravity position correspond to the value pair; f) repeating steps c) to e) until actual natural frequency is within the tolerance around target natural frequency.Type: ApplicationFiled: January 23, 2014Publication date: January 14, 2016Applicant: Siemens AktiengesellschaftInventors: Thomas Gronsfelder, Jan Walkenhorst, Armin de Lazzer
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Publication number: 20150330232Abstract: A turbomachine component having a main body and a multilayer coating, which is applied directly to the main body is provided. The multilayer coating is at least 5 ?m and at most 35 ?m thick and has a plurality of layers applied directly one on top of the other, wherein the layer applied directly to the main body is an adhesion promoting layer, which comprises chromium nitride, and at least one of the remaining layers comprises a hard material.Type: ApplicationFiled: April 2, 2013Publication date: November 19, 2015Inventors: Jochen Barnikel, Christian Bohme, Torsten-Ulf Kern, Jorg Schurhoff, Shilun Sheng, Armin de Lazzer
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Publication number: 20150030431Abstract: A blade ring for an axial turbomachine is provided, having an outer surface that is arranged on an outer ring and faces radially inwards, and an inner surface that is arranged on an inner ring and faces radially outwards, the surfaces being arranged concentrically and parallel to one another and delimiting an annular flow channel that tapers in the main flow direction of the axial turbomachine, as well as at least one adjustment blade that is arranged so as to be displaceable, in the flow channel, parallel to a surface line of one of the surfaces by a guiding device, and that is able to be fixed, in a predetermined position, to at least one of the rings.Type: ApplicationFiled: November 7, 2012Publication date: January 29, 2015Applicant: Siemens AktiengesellschaftInventor: Armin de Lazzer
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Patent number: 8487467Abstract: A method for operating a gas and steam turbine system is provided. The system includes a frequency converter which is assigned to a starting device of a gas turbine, and a generator which is assigned to a steam turbine. The intention is to be able to obtain a particularly high level of operational flexibility with particularly low mechanical complexity. For this purpose, the electrical power of the generator is fed into a consumer system via the frequency converter.Type: GrantFiled: April 20, 2009Date of Patent: July 16, 2013Assignee: Siemens AktiengesellschaftInventors: Ulrich Beul, Matthias Heue, Thomas Hofbauer, Hartmut Popella, Armin De Lazzer
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Patent number: 8021120Abstract: The invention relates to a turbine blade with a cover plate shaped onto the pan of the blade. The aim of the invention is to provide a turbine blade of this type that, while having a high level of efficiency, is designed for a particularly reliable and safe operation in a turbine, particularly of a steam turbine. To this end, the invention provides that a protective layer made on an alternative material is applied to the surface of the cover plate facing away from the pan of the blade. The friction behavior with regard to a turbine component, particularly a sealing strip, which is opposite the protective layer, can be specifically influenced whereby enabling favorable emergency running properties to be provided in the event of rubbing.Type: GrantFiled: January 20, 2006Date of Patent: September 20, 2011Assignee: Siemens AktiengesellschaftInventors: Albert Schrey, Gerhard Schwass, Armin de Lazzer
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Publication number: 20110169278Abstract: A method for operating a gas and steam turbine system is provided. The system includes a frequency converter which is assigned to a starting device of a gas turbine, and a generator which is assigned to a steam turbine. The intention is to be able to obtain a particularly high level of operational flexibility with particularly low mechanical complexity. For this purpose, the electrical power of the generator is fed into a consumer system via the frequency converter.Type: ApplicationFiled: April 20, 2009Publication date: July 14, 2011Inventors: Ulrich Beul, Matthias Heue, Thomas Hofbauer, Hartmut Popella, Armin De Lazzer
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Patent number: 7868594Abstract: A drive is embodied to drive a rotor at a variable rotational frequency; the rotor has a winding that is embodied to produce a rotary field magnetomotive force of a generator, with a rotor rotary field frequency which is variable in relation to the rotor; the frequency converter is electrically connected to the rotor winding; a regulating device comprises a recording element for measuring values of the generator, a calculating unit for a generator simulation, and a transmitter for transmitting a control signal to the frequency converter; and, on the basis of the control signal, an electrical excitation of the rotor winding can be triggered by the frequency converter in such a way that a pre-determined stator rotary field frequency is present in the event of a variable rotational frequency of the rotor and a variable rotor rotary field frequency.Type: GrantFiled: November 10, 2005Date of Patent: January 11, 2011Assignee: Siemens AktiengesellschaftInventors: Christoph Lehmann, Peter Növer, Armin de Lazzer
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Publication number: 20090022583Abstract: The invention relates to a turbine blade with a cover plate shaped onto the pan of the blade. The aim of the invention is to provide a turbine blade of this type that, while having a high level of efficiency, is designed for a particularly reliable and safe operation in a turbine, particularly of a steam turbine. To this end, the invention provides that a protective layer made on an alternative material is applied to the surface of the cover plate facing away from the pan of the blade. The friction behavior with regard to a turbine component, particularly a sealing strip, which is opposite the protective layer, can be specifically influenced whereby enabling favorable emergency running properties to be provided in the event of rubbing.Type: ApplicationFiled: January 20, 2006Publication date: January 22, 2009Inventors: Albert Schrey, Gerhard Schwass, Armin de Lazzer
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Publication number: 20080303279Abstract: According to the invention, a drive is embodied to drive a rotor at a variable rotational frequency; the rotor has a winding that is embodied to produce a rotary field magnetomotive force of a generator, with a rotor rotary field frequency which is variable in relation to the rotor; the frequency converter is electrically connected to the rotor winding; a regulating device comprises a recording element for measuring values of the generator, a calculating unit for a generator simulation, and a transmitter for transmitting a control signal to the frequency converter; and, on the basis of the control signal, an electrical excitation of the rotor winding can be triggered by the frequency converter in such a way that a pre-determined stator rotary field frequency is present in the event of a variable rotational frequency of the rotor and a variable rotor rotary field frequencyType: ApplicationFiled: November 10, 2005Publication date: December 11, 2008Inventors: Christoph Lehmann, Peter Nover, Armin de Lazzer
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Publication number: 20080213098Abstract: There is described a blade for a turbomachine, such as a steam turbine. The blade has a blade tip, which is curved in relation to the blade airfoil profile. The curvature has the shape of a winglet, which is known from aircraft construction.Type: ApplicationFiled: February 5, 2008Publication date: September 4, 2008Inventors: Matthias Neef, Norbert Surken, Armin de Lazzer