Patents by Inventor Martin Reigl
Martin Reigl 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: 9091363Abstract: A high temperature actuated steam valve is disclosed that has a connector extending between the casing of the valve and its actuator. The connector can include two spacers made of materials each with a different hot strength wherein the first spacer, fixed adjacent the casing, has a higher hot strength that the second spacer, which is fixed adjacent to the actuator.Type: GrantFiled: December 20, 2011Date of Patent: July 28, 2015Assignee: ALSTOM TECHNOLOGY LTD.Inventors: Martin Reigl, Franz Suter
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Patent number: 8684663Abstract: A steam turbine is provided having a relief groove which is arranged in the region of the equalizing piston and extends in the circumferential direction of the rotor. The relief groove, with regard to an inlet passage, is arranged in the axial upstream direction so that it is arranged on the rotor outside a region in which the steam flow enters the bladed flow path via the inlet passage. The relief groove, with regard to the first blade row, is arranged in a region in which the greatest thermal stresses can arise in the rotor. As an option, the relief groove has a cover for reducing vortex flows, and also devices for reducing heating of the groove or devices for active cooling. The steam turbine allows an increased number of risk-free running up and running down operations of the steam turbine with minimum detriment to the turbine performance.Type: GrantFiled: September 29, 2010Date of Patent: April 1, 2014Assignee: Alstom Technology Ltd.Inventors: Rabiye Bekyigit, Philipp Brunner, Jian Chen, Rolf Dobler, Jozo Drmic, Andreas Ehrsam, Maurus Herzog, Davor Kriz, Thomas Mokulys, Martin Reigl, Luca Ripamonti, Thomas Schreier, Giorgio Zanazzi
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Patent number: 8622083Abstract: A steam valve is provided including a chest, a lock, a spindle, and a strainer. Each of these components is made of specific Ni alloys combinations that enable the valve to operate at temperatures above 650° C. with a good service life.Type: GrantFiled: May 11, 2012Date of Patent: January 7, 2014Assignee: Alstom Technology LtdInventors: Martin Reigl, Helen Elisabeth Parker
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Publication number: 20130305719Abstract: A steam power plant is described including on a single rotor at least one high pressure turbine or turbine section having a steam exit connected in operation to a first steam reheater and at least two intermediate pressure turbines or turbine sections with a first of the at least two intermediate pressure turbines or turbine sections having a steam exit connected in operation to a second steam reheater and with a second of the at least two intermediate pressure turbines or turbine sections having a steam entry to receive steam from the second steam reheater and a steam exit connected to one or more low pressure turbines or turbine sections, whereby the at least two intermediate pressure turbines or turbine sections are each separated into a high temperature turbine or turbine section and into a low temperature turbine or turbine section.Type: ApplicationFiled: May 16, 2013Publication date: November 21, 2013Applicant: ALSTOM Technology LtdInventor: Martin Reigl
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Patent number: 8454306Abstract: A steam turbine (10), especially for the high-pressure range or intermediate-pressure range, includes a rotor (11) which is rotatably mounted around an axis and concentrically enclosed at a distance by an inner casing (12), wherein between the rotor (11) and the inner casing (12) a flow passage (13) is formed, which on the inlet side is axially delimited by a balance piston (18) which is arranged on the rotor (11), and into which flow passage rotor blades (15) and stator blades (17), alternating in the direction of flow, radially project, and wherein, at the entry of the flow passage (13), an inlet scroll (14), through which steam is guided from the outside radially inwards and deflected in a deflection region (27) in the axial direction to the inlet of the flow passage (13), is formed on the inner casing (12).Type: GrantFiled: November 20, 2009Date of Patent: June 4, 2013Assignee: ALSTOM Technology Ltd.Inventors: Thomas Mokulys, Vishal Borikar, Giorgio Zanazzi, Davor Kriz, Hans-Ludwig Boxheimer, Luca Ripamonti, Maurus Herzog, Martin Reigl, Rolf Doebler, Jozo Drmic, Jian Chen, Rabiye Bekyigit
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Publication number: 20120286188Abstract: A steam valve is provided including a chest, a lock, a spindle, and a strainer. Each of these components is made of specific Ni alloys combinations that enable the valve to operate at temperatures above 650° C. with a good service life.Type: ApplicationFiled: May 11, 2012Publication date: November 15, 2012Applicant: ALSTOM TECHNOLOGY LTDInventors: Martin REIGL, Helen Elisabeth PARKER
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Publication number: 20120153208Abstract: A high temperature actuated steam valve is disclosed that has a connector extending between the casing of the valve and its actuator. The connector can include two spacers made of materials each with a different hot strength wherein the first spacer, fixed adjacent the casing, has a higher hot strength that the second spacer, which is fixed adjacent to the actuator.Type: ApplicationFiled: December 20, 2011Publication date: June 21, 2012Applicant: ALSTOM Technology LtdInventors: Martin REIGL, Franz SUTER
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Publication number: 20110103970Abstract: A steam turbine is provided having a relief groove which is arranged in the region of the equalizing piston and extends in the circumferential direction of the rotor. The relief groove, with regard to an inlet passage, is arranged in the axial upstream direction so that it is arranged on the rotor outside a region in which the steam flow enters the bladed flow path via the inlet passage. The relief groove, with regard to the first blade row, is arranged in a region in which the greatest thermal stresses can arise in the rotor. As an option, the relief groove has a cover for reducing vortex flows, and also devices for reducing heating of the groove or devices for active cooling. The steam turbine allows an increased number of risk-free running up and running down operations of the steam turbine with minimum detriment to the turbine performance.Type: ApplicationFiled: September 29, 2010Publication date: May 5, 2011Applicant: ALSTOM TECHNOLOGY LTDInventors: Rabiye BEKYIGIT, Philipp BRUNNER, Jian CHEN, Rolf DÖBLER, Jozo DRMIC, Andreas EHRSAM, Maurus HERZOG, Davor KRIZ, Thomas MOKULYS, Martin REIGL, Luca RIPAMONTI, Thomas SCHREIER, Giorgio ZANAZZI
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Publication number: 20110052401Abstract: A method is disclosed for joining steel and nickel alloy turbine rotor components as is a joined turbine rotor combination produced by the method. The method includes: providing a steel rotor component; providing (e.g., laying down) a nickel alloy butter layer on the steel component; providing a nickel alloy rotor component; and welding the nickel alloy butter layer to the nickel alloy component using a nickel alloy weld filler so as to join together the components. The butter layer, laid first to the steel component, can enable reliable testing, for defects, of a nickel alloy/steel fusion line.Type: ApplicationFiled: August 24, 2010Publication date: March 3, 2011Applicant: ALSTOM TECHNOLOGY LTDInventors: Richard Brendon Scarlin, Martin Reigl
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Publication number: 20100129207Abstract: A steam turbine (10), especially for the high-pressure range or intermediate-pressure range, includes a rotor (11) which is rotatably mounted around an axis and concentrically enclosed at a distance by an inner casing (12), wherein between the rotor (11) and the inner casing (12) a flow passage (13) is formed, which on the inlet side is axially delimited by a balance piston (18) which is arranged on the rotor (11), and into which flow passage rotor blades (15) and stator blades (17), alternating in the direction of flow, radially project, and wherein, at the entry of the flow passage (13), an inlet scroll (14), through which steam is guided from the outside radially inwards and deflected in a deflection region (27) in the axial direction to the inlet of the flow passage (13), is formed on the inner casing (12).Type: ApplicationFiled: November 20, 2009Publication date: May 27, 2010Inventors: Thomas Mokulys, Vishal Borikar, Giorgio Zanazzi, Davor Kriz, Hans-Ludwig Boxheimer, Luca Ripamonti, Maurus Herzog, Martin Reigl, Rolf Doebler, Jozo Drmic, Jian Chen, Rabiye Bekyigit
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Publication number: 20100119359Abstract: A steam turbine with an operating temperature of more than 650° C. includes a thermally highly-loaded housing (G) which is produced by a casting technique at least partially from a nickel-based alloy. Production of such a steam turbine is simplified by the housing (G) being divided into a multiplicity of smaller housing sections (G1, . . . , G8; G21, G22, G31, G32) which are interconnected and together form the housing (G).Type: ApplicationFiled: October 26, 2009Publication date: May 13, 2010Inventors: Richard Brendon Scarlin, Roger Padfield, Helen Elizabeth Parker, Robert Jupp, Ian Michael Vale, Martin Reigl, Maurus Herzog, Rolf Doebler
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Publication number: 20100098538Abstract: A casing of a fluid flow machine is provided. The casing includes two half-casings which abut against each other on an axial parting plane. The casing also includes a fastening device for fastening the two half-casings to each other and for pretensioning the two half-casings against each other. The fastening device includes at least one coil which wraps around the half-casings. The coil is made up of at least one tension cable having at least one wire.Type: ApplicationFiled: September 23, 2009Publication date: April 22, 2010Applicant: ALSTOM TECHNOLOGY LTDInventors: Ferenc Bajay, Martin Reigl
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Patent number: 7524162Abstract: A rotor for a rotating machine, in particular a steam turbine includes at least one subregion composed of a metal structure having a reduced density and including a multiplicity of finely distributed cavities.Type: GrantFiled: March 29, 2006Date of Patent: April 28, 2009Assignee: Alstom Technology LtdInventor: Martin Reigl
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Patent number: 7488153Abstract: A steam turbine (10) having an inner casing (11), in which a rotor (12) that can rotate about an axis (13) is arranged, a steam passage (14) being formed between the rotor (12) and the inner casing (11), in which steam passage there is a multi-stage arrangement of guide vanes (16) secured to the inner casing (12) and rotor blades (17) secured to the rotor (12), in which arrangement hot steam coming from an inlet (15) undergoes work-performing expansion. In a steam turbine of this type, the thermal loading of the rotor and/or inner casing, in particular when starting up, is reduced by virtue of the fact that at least in the steam passage (14) plate-like protective shields (18, 19, 20), which protect the surface of the rotor (12) or inner casing (11) beneath them from the direct action of the hot steam flowing through the steam passage (14), are arranged parallel and close to the surface of the rotor (12) and/or parallel and close to the inner surface of the inner casing (11).Type: GrantFiled: December 22, 2004Date of Patent: February 10, 2009Assignee: ALSTOM Technology Ltd.Inventor: Martin Reigl
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Patent number: 7267525Abstract: A rotor for a steam turbine for working steam and including at least two rotor parts welded to one another using a circumferential, annular weld zone, which is closed in the circumferential direction. A cooling channel system is formed in the rotor and has at least one inlet flow channel, at least one outlet flow channel and at least one cooling channel. In order to simplify the integration of the cooling channel system in the rotor, the weld zone surrounds a cavity which forms a component of the cooling channel system and through which cooling steam flows.Type: GrantFiled: November 29, 2004Date of Patent: September 11, 2007Assignee: AlstomTechnology Ltd.Inventors: Michael Hiegemann, Martin Reigl
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Patent number: 7165934Abstract: A steam turbine including a rotor rotatable about an axis and a casing concentrically surrounding the rotor. A reduction in the starting times and reduced production costs may be achieved in that the casing includes a high-mass hollow-cylindrical basic carrier and a plurality of shells concentrically surrounding the basic carrier. The shells are each produced from a bent metal sheet and interspaces capable of being filled with steam are defined between adjacent ones of the plurality of shells.Type: GrantFiled: November 12, 2004Date of Patent: January 23, 2007Assignee: Alstom Technology, Ltd.Inventor: Martin Reigl
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Publication number: 20060222504Abstract: A rotor for a rotating machine, in particular a steam turbine includes at least one subregion composed of a metal structure having a reduced density and including a multiplicity of finely distributed cavities.Type: ApplicationFiled: March 29, 2006Publication date: October 5, 2006Applicant: ALSTOM Technology LtdInventor: Martin Reigl
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Patent number: 7037065Abstract: An arrangement for cooling or heating of a flange bolt for turbines comprises one or more boreholes, that extend through the bolt, and inlet and outlet pipes that are connected to each end of the borehole. A cooling or heating medium such as air, steam or any other fluid flows through an inlet pipe into and through the borehole thereby cooling or heating the bolt, and exits from the borehole via an outlet pipe. The cooling or heating arrangement enables direct cooling or heating of the bolt itself and ensures stable bolting forces throughout the operation of the turbine. The flange bolts with this arrangement may be applied to gas turbines or steam turbines operated at elevated steam temperatures and pressures.Type: GrantFiled: November 12, 2002Date of Patent: May 2, 2006Assignee: Alstom Technology LTDInventor: Martin Reigl
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Publication number: 20050163612Abstract: A steam turbine (10) having an inner casing (11), in which a rotor (12) that can rotate about an axis (13) is arranged, a steam passage (14) being formed between the rotor (12) and the inner casing (11), in which steam passage there is a multi-stage arrangement of guide vanes (16) secured to the inner casing (12) and rotor blades (17) secured to the rotor (12), in which arrangement hot steam coming from an inlet (15) undergoes work-performing expansion. In a steam turbine of this type, the thermal loading of the rotor and/or inner casing, in particular when starting up, is reduced by virtue of the fact that at least in the steam passage (14) plate-like protective shields (18, 19, 20), which protect the surface of the rotor (12) or inner casing (11) beneath them from the direct action of the hot steam flowing through the steam passage (14), are arranged parallel and close to the surface of the rotor (12) and/or parallel and close to the inner surface of the inner casing (11).Type: ApplicationFiled: December 22, 2004Publication date: July 28, 2005Inventor: Martin Reigl
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Publication number: 20050118025Abstract: A rotor for a steam turbine for working steam and including at least two rotor parts welded to one another using a circumferential, annular weld zone, which is closed in the circumferential direction. A cooling channel system is formed in the rotor and has at least one inlet flow channel, at least one outlet flow channel and at least one cooling channel. In order to simplify the integration of the cooling channel system in the rotor, the weld zone surrounds a cavity which forms a component of the cooling channel system and through which cooling steam flows.Type: ApplicationFiled: November 29, 2004Publication date: June 2, 2005Applicant: ALSTOM Technology Ltd.Inventors: Michael Hiegemann, Martin Reigl