Patents by Inventor Richard Brendon Scarlin
Richard Brendon Scarlin 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: 8359925Abstract: A method is disclosed for inspecting a weld joining a first rotor disk made of nickel alloy and having an inner surface and an outer surface concentric with the rotor's longitudinal axis to a second rotor disk having an inner surface and an outer surface concentric with the rotor's longitudinal axis. The weld made of nickel alloy fills a radial gap between the rotor disks, and has a dissimilar microstructure to either of the rotor disks. The method includes forming at least one slot in the first rotor disk extending through either the inner surface or the outer surface of the first rotor disk terminating in the first rotor disk; and passing an inspection signal from the first slot to the weld to inspect the weld for defects.Type: GrantFiled: October 1, 2009Date of Patent: January 29, 2013Assignee: Alstom Technology Ltd.Inventors: Richard Brendon Scarlin, Andreas Pirscher, Maurus Herzog
-
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
-
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
-
Publication number: 20100089165Abstract: A method is disclosed for inspecting a weld joining a first rotor disk made of nickel alloy and having an inner surface and an outer surface concentric with the rotor's longitudinal axis to a second rotor disk having an inner surface and an outer surface concentric with the rotor's longitudinal axis. The weld made of nickel alloy fills a radial gap between the rotor disks, and has a dissimilar microstructure to either of the rotor disks. The method includes forming at least one slot in the first rotor disk extending through either the inner surface or the outer surface of the first rotor disk terminating in the first rotor disk; and passing an inspection signal from the first slot to the weld to inspect the weld for defects.Type: ApplicationFiled: October 1, 2009Publication date: April 15, 2010Applicant: ALSTOM Technology LtdInventors: Richard Brendon Scarlin, Andreas Pirscher, Maurus Herzog
-
Publication number: 20100092301Abstract: A component for a high-temperature steam turbine which operates at temperatures above 600° C., especially above 700° C., is formed of a nickel-based alloy. The negative influence of oxidation of the component which is induced by the superheated steam is prevented by the alloy which is used, having the following composition (in % by weight): C: ?0.2 Si: ?1.0 Mn: ?1.0 Cr: 22.0-25.0 Co: 15.0-25.0 Mo: ?3.0 Nb: ?2.0 Al: 1.0-3.0 Ti: 2.0-4.0 Fe: ?2.0 Zr: ?0.2 B: ??0.05 Ni: remainder.Type: ApplicationFiled: October 27, 2008Publication date: April 15, 2010Inventor: Richard Brendon Scarlin
-
Patent number: 7624909Abstract: A welded component includes at least one high temperature segment of a high alloy Cr steel with high creep strength and a low temperature segment of a low alloy steel with high toughness and/or a high yield strength which are connected materially to one another via a weld joint. In one such component a gradual transition of chemical, physical and mechanical properties in the joining area is achieved in that between the weld joint and the high temperature segment there are at least two successive clad layers of at least two lower alloy weld metals with a total content of elements which increase the creep strength, such as for example Cr, Mo, W and V, which total content decreases toward the weld joint, and/or an increasing total content of elements which increase the toughness and/or yield strength, such as for example Ni and Mn, which total content increases toward the weld joint.Type: GrantFiled: November 20, 2007Date of Patent: December 1, 2009Assignee: Alstom Technology LtdInventors: Herbert Bartsch, Richard Brendon Scarlin
-
Patent number: 7568368Abstract: A method for the surface treatment of ferritic/martensitic 9-12% Cr steels for the purpose of achieving an improved oxidation behavior and increased resistance to solid particle erosion at application temperatures of above 500° C., in particular around 650° C., in steam includes, in a first step, a known shot peening of the surface of the steel with steel particles, and, subsequently, in a second step, shot peening with glass particles, optionally, in a following third step, the surface of the steel being smoothed. A subsequent additional heat treatment is unnecessary.Type: GrantFiled: June 6, 2008Date of Patent: August 4, 2009Assignee: ALSTOM Technology Ltd.Inventors: Richard Brendon Scarlin, Reinhard Knoedler, Stefan Straub
-
Publication number: 20090077801Abstract: A method for the surface treatment of ferritic/martensitic 9-12% Cr steels and of austenitic Cr steels for the purpose of achieving increased resistance to oxidation and solid particle erosion at application temperatures of above 500° C., in particular of approximately 650° C., in steam, includes that the surface of the steel is shot-peened with particles of aluminum or of an aluminum alloy; optionally, in a subsequent step, the surface of the steel is smoothed to a roughness of <0.5 ?m, preferably <0.3 ?m. Following additional heat treatment is not necessary, and the parts thus treated may be employed, for example, as blades in steam turbines.Type: ApplicationFiled: June 11, 2008Publication date: March 26, 2009Inventors: Richard Brendon Scarlin, Stefan STRAUB, Reinhard KNODLER
-
Publication number: 20080307847Abstract: A method for the surface treatment of ferritic/martensitic 9-12% Cr steels for the purpose of achieving an improved oxidation behavior and increased resistance to solid particle erosion at application temperatures of above 500° C., in particular around 650° C., in steam includes, in a first step, a known shot peening of the surface of the steel with steel particles, and, subsequently, in a second step, shot peening with glass particles, optionally, in a following third step, the surface of the steel being smoothed. A subsequent additional heat treatment is unnecessary.Type: ApplicationFiled: June 6, 2008Publication date: December 18, 2008Inventors: Richard Brendon Scarlin, Reinhard Knoedler, Stefan Straub
-
Patent number: 7458219Abstract: A steam power plant with retrofit kit has a steam generator (1) with superheater, a steam turbine set including condensation installations (11), connecting pipelines, auxiliary devices and a generator (10). The steam power plant (22) is distinguished by the fact that the retrofit kit includes a retrofit turbine module (25) which is designed for elevated temperature and for unchanged or modified pressure and is connected upstream of the existing steam turbine set or is exchanged for the high-pressure turbine of the latter. Furthermore, a method for retrofitting an existing steam power plant includes the following steps: connecting a retrofit turbine module (25) for high operating temperatures and unchanged or modified operating pressure upstream of the existing turbine set or exchanging the existing high-pressure turbine for the retrofit turbine module (25); providing a steam generator (1) and/or superheater (32) for high live steam temperature.Type: GrantFiled: April 9, 2002Date of Patent: December 2, 2008Assignee: ALSTOM Technology Ltd.Inventors: Maurus Herzog, Richard Brendon Scarlin, Charles Smadja
-
Publication number: 20080011976Abstract: A steam inlet valve (1) of a steam turbine, with a valve seat (2) and a valve body (3) which, when the valve is closed, bears via a contact region (5) with sealing effect on a contact region (5?) of the valve seat (2). At least one of the two contact regions (5, 5?) has at least one sealing region (6) which faces the other contact region (5, 5?), a base region (7) which faces away from the sealing region (6), and a transition region (8) which is situated between them, wherein the sealing region (6) is formed from a sealing material (B) and the base region (7) is formed from a base material (A), which the valve seat (2) or the valve body (3) also approximately comprises.Type: ApplicationFiled: July 12, 2007Publication date: January 17, 2008Inventor: Richard Brendon Scarlin
-
Patent number: 7314670Abstract: A welded component includes at least one high temperature segment of a high alloy Cr steel with high creep strength and a low temperature segment of a low alloy steel with high toughness and/or a high yield strength which are connected materially to one another via a weld joint. In one such component a gradual transition of chemical, physical and mechanical properties in the joining area is achieved in that between the weld joint and the high temperature segment there are at least two successive clad layers of at least two lower alloy weld metals with a total content of elements which increase the creep strength, such as for example Cr, Mo, W and V, which total content decreases toward the weld joint, and/or an increasing total content of elements which increase the toughness and/or yield strength, such as for example Ni and Mn, which total content increases toward the weld joint.Type: GrantFiled: May 12, 2005Date of Patent: January 1, 2008Assignee: ALSTOM Technology LtdInventors: Herbert Bartsch, Richard Brendon Scarlin
-
Patent number: 7179342Abstract: A thermally loaded component (10), in particular a rotor for a steam or gas turbine, includes a plurality of component sections which, during operation, are exposed to different temperature levels, a first component section being designed for temperatures of >750° C., a second component section being designed for temperatures of approximately between 750° C. and 600° C., and a third component section being designed for temperatures of <600° C.Type: GrantFiled: October 14, 2004Date of Patent: February 20, 2007Assignee: ALSTOM Technology Ltd.Inventor: Richard Brendon Scarlin
-
Patent number: 7168916Abstract: A rotor (10) for a thermal machine, in particular a steam or gas turbine, includes a plurality of rotor disks (12, 13, 14) which are arranged one behind the other in the rotor axis (11) and are welded to one another, at least one first rotor disk (13), which is arranged in a section of the rotor (10) which is subject to particularly high thermal loads, including a nickel-base alloy which is able to withstand high temperatures and is welded to at least one second, adjacent rotor disk (12, 14), which includes a steel which is able to withstand high temperatures.Type: GrantFiled: October 6, 2004Date of Patent: January 30, 2007Assignee: Alstom Technology Ltd.Inventor: Richard Brendon Scarlin
-
Publication number: 20040194467Abstract: A steam power plant with retrofit kit has a steam generator (1) with superheater, a steam turbine set including condensation installations (11), connecting pipelines, auxiliary devices and a generator (10). The steam power plant (22) is distinguished by the fact that the retrofit kit includes a retrofit turbine module (25) which is designed for elevated temperature and for unchanged or modified pressure and is connected upstream of the existing steam turbine set or is exchanged for the high-pressure turbine of the latter. Furthermore, a method for retrofitting an existing steam power plant includes the following steps: connecting a retrofit turbine module (25) for high operating temperatures and unchanged or modified operating pressure upstream of the existing turbine set or exchanging the existing high-pressure turbine for the retrofit turbine module (25); providing a steam generator (1) and/or superheater (32) for high live steam temperature.Type: ApplicationFiled: April 27, 2004Publication date: October 7, 2004Inventors: Maurus Herzog, Richard Brendon Scarlin, Charles Smadja
-
Patent number: 6753504Abstract: In a method for welding together two parts (12, 13), especially of a turbomachine, which are exposed to different temperatures, of which the first part (12) consists of a steel and the second part (13) consists of a nickel-base alloy which contains elements which are unfavorable for welding to steel, such as for example Nb, a crack-free welded joint is achieved by the fact that first of all an intermediate layer (18), in which the amount of unfavorable elements is progressively reduced from the inside outward, is applied to the joining surface (17) which is provided for the welding, and that then the second part (13), which has been provided with the intermediate layer (18), is welded to the first part (12).Type: GrantFiled: March 12, 2002Date of Patent: June 22, 2004Assignee: Alstom Technology LTDInventors: Sorin Keller, Richard Brendon Scarlin, Markus Staubli, Rodney Williams Vanstone
-
Patent number: 6673467Abstract: A metallic component exposed to high temperature steam is provided with a coating comprising a thin primer layer deposited on the surface of the metallic component and a thicker overlay layer on top of the primer layer. The primer layer consists of highly ductile, oxidation resistant material such that it remains free of any defects over a long period of exposure. The overlay layer consists of an oxidation resistant, less ductile, and low-cost material. It protects the thin primer layer from mechanical damage and chemical degradation. The primer layer protects the base material of the metallic component from oxidizing steam that may penetrate through cracks of the overlay layer. Due to suitable choice of coating materials and thicknesses of the layers the coating is low-cost.Type: GrantFiled: October 1, 2001Date of Patent: January 6, 2004Assignee: Alstom (Switzerland) LtdInventors: Richard Brendon Scarlin, Reinhard Knödler
-
Publication number: 20030064244Abstract: A metallic component exposed to high temperature steam is provided with a coating comprising a thin primer layer deposited on the surface of the metallic component and a thicker overlay layer on top of the primer layer. The primer layer consists of highly ductile, oxidation resistant material such that it remains free of any defects over a long period of exposure. The overlay layer consists of an oxidation resistant, less ductile, and low-cost material. It protects the thin primer layer from mechanical damage and chemical degradation. The primer layer protects the base material of the metallic component from oxidizing steam that may penetrate through cracks of the overlay layer. Due to suitable choice of coating materials and thicknesses of the layers the coating is low-cost.Type: ApplicationFiled: October 1, 2001Publication date: April 3, 2003Inventors: Richard Brendon Scarlin, Reinhard Knodler
-
Publication number: 20020172587Abstract: In a method for welding together two parts (12, 13), especially of a turbomachine, which are exposed to different temperatures, of which the first part (12) consists of a steel and the second part (13) consists of a nickel-base alloy which contains elements which are unfavorable for welding to steel, such as for example Nb, a crack-free welded joint is achieved by the fact that first of all an intermediate layer (18), in which the amount of unfavorable elements is progressively reduced from the inside outward, is applied to the joining surface (17) which is provided for the welding, and that then the second part (13), which has been provided with the intermediate layer (18), is welded to the first part (12).Type: ApplicationFiled: March 12, 2002Publication date: November 21, 2002Inventors: Sorin Keller, Richard Brendon Scarlin, Markus Staubli, Rodney Williams Vanstone