Patents by Inventor Alberto Scotti Del Greco
Alberto Scotti Del Greco 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: 11067096Abstract: The present disclosure relates to a turbomachine assembly, which includes a shaft, a radial gas expander supported on the shaft between a first bearing and a second bearing, and a compressor supported on the shaft in overhung position adjacent to one or the other of the first and second bearings. The compressor includes a plurality of movable inlet nozzles and the radial gas expander includes a plurality of movable guide vanes.Type: GrantFiled: March 9, 2015Date of Patent: July 20, 2021Assignee: Nuovo Pignone SrlInventors: Matteo Berti, Paolo Delturco, Matteo Dall'ara, Alberto Scotti Del Greco
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Patent number: 10927849Abstract: In some embodiments, a plenum of an apparatus for transferring energy between a rotating element and a fluid may include a through hole disposed through the plenum; a plurality of inlet guide vanes disposed proximate a peripheral edge of the through hole, the plurality of inlet guide vanes comprising a first group of inlet guide vanes having a symmetrical profile, a second group of inlet guide vanes, and a third group of inlet guide vanes, wherein each inlet guide vane of the second group and third group have a cambered profile, wherein each inlet guide vane of the second group has same cambered profile, and further wherein each inlet guide vane of the third group has a different cambered profile from each other inlet guide vane of the third group.Type: GrantFiled: June 15, 2018Date of Patent: February 23, 2021Assignee: NUOVO PIGNONE TECNOLOGIE SRLInventors: Ismail Hakki Sezal, Christian Aalburg, Rajesh Kumar Venkata Gadamsetty, Matthias Carl Lang, Venkata Rama Krishna Chaitanya Ongole, Alberto Scotti del Greco
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Patent number: 10920788Abstract: In order to reduce erosion of an impeller due to liquid droplets in an incoming flow of gas, the impeller comprises converging-diverging bottlenecks; the incoming flow passes through the bottlenecks so that the speed of the gas at the inlet of the impeller first suddenly and substantially increases and then suddenly and substantially decreases; furthermore, the impeller is configured so that, internally after its inlet, the incoming flow is deviated gradually in the meridional plane.Type: GrantFiled: September 11, 2014Date of Patent: February 16, 2021Assignee: NUOVO PIGNONE SRLInventors: Alberto Scotti Del Greco, Andrea Arnone, Matteo Checcucci, Filippo Rubechini
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Patent number: 10634001Abstract: A device for controlling the flow in a turbomachine, in an embodiment, a centrifugal compressor; the device includes a plurality of fixed blades and a plurality of adjustable blades adjacent to the plurality of fixed blades so that each of the adjustable blades has an aerodynamic interaction with one of the fixed blades; each of the adjustable blades is pivoted to rotate about a fixed axis substantially located at the center of pressure of the adjustable blade; the center of pressure is evaluated when the blade is at a reference orientation.Type: GrantFiled: January 27, 2016Date of Patent: April 28, 2020Assignee: Nuovo Pignone SrlInventors: Alberto Scotti Del Greco, Sen Radhakrishnan, Rajesh Kumar Venkata Gadamsetty, Matthias Carl Lang, Ismail Hakki Sezal
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Patent number: 10221691Abstract: A connection arrangement comprising a shaft having an axial through hole, a tie rod located inside the axial through hole, an impeller comprising a solid hub, a plurality of blades, and an integral stub protruding axially from the solid hub; at an end of the tie rod there is an integral body having a shape radially protruding from the tie rod; the stub has a cavity for receiving the body and an axial hole for inserting the body into the cavity; the stub axial hole has a shape corresponding to the shape of the body; the cavity is so sized and shaped as to allow rotation of the body inside the cavity and trapping of the body in the cavity once rotated; the shaft and the impeller are coupled together by a coupling.Type: GrantFiled: June 5, 2014Date of Patent: March 5, 2019Assignee: Nuovo Pignone SrlInventors: Gabriele Mariotti, Enrica Caterina Benedetto, Alberto Scotti Del Greco, Marco Mencagli
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Publication number: 20180291923Abstract: In some embodiments, a plenum of an apparatus for transferring energy between a rotating element and a fluid may include a through hole disposed through the plenum; a plurality of inlet guide vanes disposed proximate a peripheral edge of the through hole, the plurality of inlet guide vanes comprising a first group of inlet guide vanes having a symmetrical profile, a second group of inlet guide vanes, and a third group of inlet guide vanes, wherein each inlet guide vane of the second group and third group have a cambered profile, wherein each inlet guide vane of the second group has same cambered profile, and further wherein each inlet guide vane of the third group has a different cambered profile from each other inlet guide vane of the third group.Type: ApplicationFiled: June 15, 2018Publication date: October 11, 2018Inventors: Ismail Hakki Sezal, Christian Aalburg, Rajesh Kumar Venkata Gadamsetty, Matthias Carl Lang, Venkata Rama Krishna Chaitanya Ongole, Alberto Scotti del Greco
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Patent number: 10030669Abstract: Embodiments of an apparatus for transferring energy between a rotating element and a fluid are provided herein. In some embodiments, a plenum of an apparatus for transferring energy between a rotating element and a fluid may include a through hole disposed through the plenum; and a plurality of inlet guide vanes disposed proximate a peripheral edge of the through hole, the plurality of inlet guide vanes comprising a first group of inlet guide vanes having a cambered profile and a second group of inlet guide vanes disposed radially inward of the first group of inlet guide vanes, wherein the first group of inlet guide vanes are in a fixed position with respect to the plenum and the second group of inlet guide vanes are movable with respect to the plenum.Type: GrantFiled: June 26, 2014Date of Patent: July 24, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Ismail Hakki Sezal, Christian Aalburg, Rajesh Kumar Venkata Gadamsetty, Matthias Carl Lang, Venkata Rama Krishna Chaitanya Ongole, Alberto Scotti del Greco, Rudolf Konrad Selmeier
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Patent number: 10024335Abstract: In some embodiments, a plenum of an apparatus for transferring energy between a rotating element and a fluid may include a through hole disposed through the plenum; a plurality of inlet guide vanes disposed proximate a peripheral edge of the through hole, the plurality of inlet guide vanes comprising a first group of inlet guide vanes having a symmetrical profile, a second group of inlet guide vanes, and a third group of inlet guide vanes, wherein each inlet guide vane of the second group and third group have a cambered profile, and wherein each inlet guide vane of the third group has a different cambered profile from each other inlet guide vane of the third group.Type: GrantFiled: June 26, 2014Date of Patent: July 17, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Ismail Hakki Sezal, Christian Aalburg, Rajesh Kumar Venkata Gadamsetty, Matthias Carl Lang, Venkata Rama Krishna Chaitanya Ongole, Alberto Scotti del Greco
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Publication number: 20180023586Abstract: A device for controlling the flow in a turbomachine, in an embodiment, a centrifugal compressor; the device includes a plurality of fixed blades and a plurality of adjustable blades adjacent to the plurality of fixed blades so that each of the adjustable blades has an aerodynamic interaction with one of the fixed blades; each of the adjustable blades is pivoted to rotate about a fixed axis substantially located at the center of pressure of the adjustable blade; the center of pressure is evaluated when the blade is at a reference orientation.Type: ApplicationFiled: January 27, 2016Publication date: January 25, 2018Applicant: Nuovo Pignone Technologie SrlInventors: Alberto SCOTTI DEL GRECO, Sen RADHAKRISHNAN, Rajesh Kumar Venkata GADAMSETTY, Matthias Carl LANG, Ismail Hakki SEZAL
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Publication number: 20170023011Abstract: The present disclosure relates to a turbomachine assembly, which includes a shaft, a radial gas expander supported on the shaft between a first bearing and a second bearing, and a compressor supported on the shaft in overhung position adjacent to one or the other of the first and second bearings. The compressor includes a plurality of movable inlet nozzles and the radial gas expander includes a plurality of movable guide vanes.Type: ApplicationFiled: March 9, 2015Publication date: January 26, 2017Applicant: Nuovo Pignone SrlInventors: Matteo BERTI, Paolo DELTURCO, Matteo DALL'ARA, Alberto Scotti DEL GRECO
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Publication number: 20160222980Abstract: In order to reduce erosion of an impeller due to liquid droplets in an incoming flow of gas, the impeller comprises converging-diverging bottlenecks; the incoming flow passes through the bottlenecks so that the speed of the gas at the inlet of the impeller first suddenly and substantially increases and then suddenly and substantially decreases; furthermore, the impeller is configured so that, internally after its inlet, the incoming flow is deviated gradually in the meridional plane.Type: ApplicationFiled: September 11, 2014Publication date: August 4, 2016Inventors: Alberto SCOTTI DEL GRECO, Andrea ARNONE, Matteo CHECCUCCI, Filippo RUBECHINI
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Publication number: 20160130947Abstract: A connection arrangement comprising a shaft having an axial through hole, a tie rod located inside the axial through hole, an impeller comprising a solid hub, a plurality of blades, and an integral stub protruding axially from the solid hub; at an end of the tie rod there is an integral body having a shape radially protruding from the tie rod; the stub has a cavity for receiving the body and an axial hole for inserting the body into the cavity; the stub axial hole has a shape corresponding to the shape of the body; the cavity is so sized and shaped as to allow rotation of the body inside the cavity and trapping of the body in the cavity once rotated; the shaft and the impeller are coupled together by a coupling.Type: ApplicationFiled: June 5, 2014Publication date: May 12, 2016Inventors: Gabriele MARIOTTI, Enrica Caterina BENEDETTO, Alberto SCOTTI DEL GRECO, Marco MENCAGLI
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Publication number: 20160123345Abstract: An impeller includes a hub having a direction of rotation, a plurality of impeller blades extending from the hub, each blade having a downstream end, an upstream end, a leading surface facing the direction of rotation of the hub, and a trailing surface facing opposite to the direction of rotation of the hub. The impeller further includes a secondary flow reducer extending towards the downstream end and the upstream end of the at least one of the plurality of impeller blades, the secondary flow reducer defining first and second surfaces intersecting one of the leading surface and the trailing surface of the at least one of the plurality of impeller blades as well as a third surface between the first and second surfaces.Type: ApplicationFiled: June 11, 2014Publication date: May 5, 2016Inventors: Alberto SCOTTI DEL GRECO, Libero TAPINASSI
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Publication number: 20150377252Abstract: Embodiments of an apparatus for transferring energy between a rotating element and a fluid are provided herein. In some embodiments, a plenum of an apparatus for transferring energy between a rotating element and a fluid may include a through hole disposed through the plenum; and a plurality of inlet guide vanes disposed proximate a peripheral edge of the through hole, the plurality of inlet guide vanes comprising a first group of inlet guide vanes having a cambered profile and a second group of inlet guide vanes disposed radially inward of the first group of inlet guide vanes, wherein the first group of inlet guide vanes are in a fixed position with respect to the plenum and the second group of inlet guide vanes are movable with respect to the plenum.Type: ApplicationFiled: June 26, 2014Publication date: December 31, 2015Inventors: Ismail Hakki Sezal, Christian Aalburg, Rajesh Kumar Venkata Gadamsetty, Matthias Carl Lang, Venkata Rama Krishna Chaitanya Ongole, Alberto Scotti del Greco, Rudolf Konrad Selmeier
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Publication number: 20150377251Abstract: In some embodiments, a plenum of an apparatus for transferring energy between a rotating element and a fluid may include a through hole disposed through the plenum; a plurality of inlet guide vanes disposed proximate a peripheral edge of the through hole, the plurality of inlet guide vanes comprising a first group of inlet guide vanes having a symmetrical profile, a second group of inlet guide vanes, and a third group of inlet guide vanes, wherein each inlet guide vane of the second group and third group have a cambered profile, and wherein each inlet guide vane of the third group has a different cambered profile from each other inlet guide vane of the third group.Type: ApplicationFiled: June 26, 2014Publication date: December 31, 2015Inventors: Ismail Hakki Sezal, Christian Aalburg, Rajesh Kumar Venkata Gadamsetty, Matthias Carl Lang, Venkata Rama Krishna Chaitanya Ongole, Alberto Scotti del Greco
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Patent number: 9046097Abstract: A system for testing a compressor is provided. The system comprises one or more compressors connected together in series to a test compressor wherein an output of the test compressor is connected to an input of a first compressor in the series, forming an overall loop, one or more process fluid coolers in the overall loop, one or more orifices in the overall loop, a control valve in the overall loop, and a first plurality of sensors configured adjacent to a process fluid input of the test compressor and a second plurality of sensors configured adjacent to a process fluid output of the test compressor.Type: GrantFiled: December 19, 2012Date of Patent: June 2, 2015Assignee: Nuovo Pignone S.P.AInventors: Alberto Scotti Del Greco, Libero Tapinassi, Stefano Vanghi, Filippo Gerbi, Chiara Cinelli
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Patent number: 8944746Abstract: A turboexpander-compressor system includes an expander configured to expand an incoming gas, a first set of moveable inlet guide vanes configured to control a pressure of the incoming gas, a compressor configured to compress a gas received from the expander, a shaft configured to support and rotate an expander impeller and a compressor impeller, a second set of moveable inlet guide vanes attached to the compressor and configured to control a pressure of the gas input into the compressor, and a controller configured to acquire information about a rotating speed of the shaft, a pressure and a temperature of the incoming gas, a pressure and a temperature of the gas output from the expander, and to control the second set of moveable inlet guide vanes to maximize a ratio between the rotating speed of the shaft and a drop of an enthalpy across the expander, in off-design conditions.Type: GrantFiled: June 23, 2011Date of Patent: February 3, 2015Assignee: Nuovo Pignone S.p.A.Inventors: Gabriele Mariotti, Alberto Scotti Del Greco, Stefano Ghiraldo
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Patent number: 8882438Abstract: A method and system for power generation including a turboexpander with at least two expansion stages, the turboexpander being connected to a power generation unit, is provided. The system includes a controller configured to control (i) an angle of a first inlet guide vane provided at an inlet of a first expansion stage of the turboexpander for maintaining an inlet pressure of the first expansion stage in a predetermined range, and (ii) an angle of a second inlet guide vane provided at an inlet of a second expansion stage of the turboexpander. The controller is configured to determine a highest power from determined powers of the power generation unit and a corresponding angle of the second inlet guide vane and to adjust the angle of the second inlet guide vane independent of the angle of the first inlet guide vane to achieve the highest power.Type: GrantFiled: May 23, 2011Date of Patent: November 11, 2014Assignee: Nuovo Pignone S.p.A.Inventors: Antonio Asti, Alberto Scotti Del Greco, Paolo Del Turco, Alessio Miliani
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Patent number: 8567184Abstract: A system for recovering energy in a gas compression plant. The system comprises at least one centrifugal compressor configured to suck the gas, at a certain inlet pressure, from a suction conduit and configured to deliver the gas, at a certain outlet pressure that is greater than an inlet pressure, through a delivery conduit The system also includes at least one gas recirculation system configured to redirect the gas from the delivery conduit to the suction conduit when the gas flow rate entering into the compressor is below a certain limit value. In the portion of the plant arranged downstream of the compressor, at least one turbo-expander and at least one valve are installed in parallel so that they cooperate with each other and are controlled by electronic devices so as to protect the compressor and to produce useful energy during recirculation mode.Type: GrantFiled: April 22, 2010Date of Patent: October 29, 2013Assignee: Nuovo Pignone S.p.A.Inventors: Alberto Scotti Del Greco, Renato Ferroni, Gabriele Mariotti, Alessandra Barabino
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Publication number: 20130031902Abstract: Various methods and systems are provided for an engine. In one example, the system includes a two-stage turbocharger which has first turbocharger with a first turbine and a first compressor and a second turbocharger with a second turbine and a second compressor, where the first turbine and the second turbine are arranged in parallel and the first compressor and the second compressor are arranged in series. The system may include a duct coupling turbine inlets of the first and second turbine, and a valve coupled between the duct and the inlet of the first turbine to throttle flow to first turbine.Type: ApplicationFiled: August 3, 2011Publication date: February 7, 2013Inventors: Rodrigo Rodriguez Erdmenger, Douglas C. Hofer, Jassin Fritz, Alberto Scotti Del Greco, Georgios Bikas, Mark Stablein, Sebastian Walter Freund, Vittorio Michelassi