Patents by Inventor Vittorio Michelassi

Vittorio Michelassi 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: 9822793
    Abstract: Three-dimensional (3D) return vane for a multistage centrifugal compressor. The return channel vane extends upstream to a region proximate the bend apex of the return channel. In each point of the return channel vane, the angle “beta” is defined as the acute angle between the tangent to the local camberline and the local circumferential direction. At each normalized position between leading edge and trailing edge, the local twist of the return channel vane is defined as the algebraic difference between the angles beta at the two points at hub and shroud having said normalized position. When moving in streamwise direction from leading edge to trailing edge, the twist first decreases, reaching an algebraic minimum, then increases, reaching an algebraic maximum, then decreases again. However, the absolute twist of the algebraic minimum is larger than the absolute twist of the algebraic maximum.
    Type: Grant
    Filed: November 5, 2013
    Date of Patent: November 21, 2017
    Assignee: Nuovo Pignone Srl
    Inventors: Ismail Sezal, Christian Aalburg, Vittorio Michelassi, Giuseppe Sassanelli
  • Publication number: 20170328377
    Abstract: A compressor is provided including a compressor end-wall having a casing and a hub. The compressor further includes at least one set of rotor blades, one set of stator blades, and a plurality of end-wall treatments spaced apart from each other, formed in an interior surface of at least one of the casing and hub, and facing a tip of the rotor blade or stator blade. Each end-wall treatment includes a forward recess portion extending along a first axis and an aft recess portion extending along a second axis different than the first axis. The aft recess portion is joined to the corresponding forward recess portion via an intersection portion which is inclined relative to at least one of the first axis, and the second axis. The aft recess portion and/or the forward recess portion are bent from the intersection portion and inclined relative to an axial direction of the compressor.
    Type: Application
    Filed: December 10, 2014
    Publication date: November 16, 2017
    Inventors: Ramakrishna Venkata MALLINA, Sungho YOON, Vittorio MICHELASSI, Ivan MALCEVIC
  • Publication number: 20170321602
    Abstract: An apparatus and method are disclosed for a gas turbine engine including an offtake located within the air flow of the engine. The offtake has an inlet and a louver covering the inlet. The louver has multiple airfoils arranged to direct the air flow into the inlet of the offtake.
    Type: Application
    Filed: February 23, 2017
    Publication date: November 9, 2017
    Inventors: Antonio GUIJARRO VALENCIA, Vittorio MICHELASSI
  • Publication number: 20170306734
    Abstract: A fluid processor for use in a downhole pumping operation includes a fluid processing stag, a nozzle stage and a gas compressor stage. The nozzle chamber is configured as a convergent-divergent nozzle and the variable metering member is configured for axial displacement within the convergent section to adjust the open cross-sectional area of the nozzle. A method for producing fluid hydrocarbons from a subterranean wellbore with a pumping system includes the steps of measuring a first gas-to-liquid ratio of the fluid hydrocarbons and operating a motor within the pumping system to operate at a first rotational speed. The method continues with the steps of measuring a second gas-to-liquid ration of the fluid hydrocarbons with the sensor module, where the second gas-to-liquid ratio is greater than the first gas-to-liquid ratio, and operating the motor at a second rotational speed that is faster than the first rotational speed.
    Type: Application
    Filed: February 24, 2015
    Publication date: October 26, 2017
    Inventors: Michael Franklin HUGHES, Jeremy Daniel VAN DAM, Vittorio MICHELASSI, Scott Alan HARBAN, Rene DU CAUZE DE NAZELLE
  • Patent number: 9771977
    Abstract: Gas bearing for an aspirating seal assembly is disclosed. The gas bearing includes a bearing body having a bearing surface. The gas bearing further includes a first through-hole disposed in the bearing body, and a plurality of second through-holes spaced apart from each other and disposed around the first through-hole. The first through-hole is characterized by a size, and a first central axis. Each second through-hole is characterized by a size, and a second central axis. The second central axis of each second through-hole in the plurality of second through-holes intersects the first central axis at an angle in a range from about 30 degrees to about 150 degrees or at an angle in a range from about ?30 degrees to about ?150 degrees. Size of at least one through-hole in the plurality of second through-holes is different from the size of the first through-hole.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: September 26, 2017
    Assignee: General Electric Company
    Inventors: Rodrigo Rodriguez Erdmenger, Christopher Edward Wolfe, Vittorio Michelassi, Quang Tue Nguyen Tran, Nathan Evan McCurdy Gibson
  • Publication number: 20170268528
    Abstract: Centrifugal compressor having flow-control blades in which each of the flow-control blades has a pressure side and an opposite suction side. Each of the flow-control blades includes a main section and an inducer section that project away from an impeller surface. The inducer section is positioned upstream from the main section. The inducer section includes a trailing edge and the main section includes a leading edge that is spaced apart from the trailing edge. The inducer sections are aligned with the respective main sections as the inducer and main sections project from the impeller surface to a designated point above the impeller surface. Each of the trailing edges of the inducer sections and the respective leading edge of the main section form a bleed gap therebetween after the designated point. The bleed gap is configured to permit fluid to flow therethrough from the pressure side to the suction side.
    Type: Application
    Filed: March 21, 2016
    Publication date: September 21, 2017
    Inventors: Rodrigo Rodriguez Erdmenger, Vittorio Michelassi
  • Patent number: 9689401
    Abstract: An impeller designed to be mounted on a rotary shaft includes: a basic rim provided with blades protruding on one surface of the basic rim, and a hub capable of being coupled to the basic rim and to the rotary shaft. In certain embodiments, the impeller includes an annular plate and the hub, where the annular plate and the basic rim are configured to interact together so as to hold the basic rim axially and to maintain a freedom of radial deformation of the basic rim relative to the hub and to the annular plate.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: June 27, 2017
    Assignee: Thermodyn
    Inventors: Sylvain Guillemin, Vittorio Michelassi, Douglas Carl Hofer
  • Patent number: 9689886
    Abstract: A flow angle probe is provided comprising: (a) a probe vane configured to contact a moving fluid within a fluid conduit; (b) an optional probe mounting mechanically coupled to the probe vane; (c) a rotary shaft coupled either to the optional probe mounting or the probe vane; (d) a rotary encoder coupled to the rotary shaft; (e) a sensor hermetically isolated from the probe vane and configured to sense a change in position of the rotary encoder; and (f) a probe housing encompassing at least a portion of the rotary shaft, the rotary encoder and the sensor. The novel flow angle probes disclosed herein may be used in a wide variety of turbomachines and fluid processing systems, and applications, including turbomachine design and operational control, as well as in flow assurance.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: June 27, 2017
    Assignee: General Electric Company
    Inventors: Carsten Michael Schneider, Vittorio Michelassi, Andreas Herrig, Erik Mele, Nathaniel David Varano, Brent David Michalowski, Kenton Travis Shonhor
  • Publication number: 20170175752
    Abstract: A fluid transport device defining a centerline axis therethrough includes at least one rotatable member including a first portion and a second portion axially opposite the first portion. The fluid transport device also includes at least one stationary member positioned proximate the at least one rotatable member. The at least one rotatable member and the at least one stationary member define at least one stage. The at least one rotatable member defines at least one pressure balance port extending from the second portion to the first portion. The at least one pressure balance port is configured to substantially equalize a fluid pressure proximate the second portion with a pressure of a fluid proximate the first portion.
    Type: Application
    Filed: December 21, 2015
    Publication date: June 22, 2017
    Inventors: Douglas Carl Hofer, Vittorio Michelassi, Rosario Monteriso
  • Patent number: 9611855
    Abstract: A subsea boosting module for use with a direct current (DC) power system includes a housing defining at least one interior chamber. A fluid pump is disposed within the interior chamber. An electric motor is disposed within the interior chamber and drivingly coupled to the fluid pump. A plurality of power components is disposed within the interior chamber to deliver power to the electric motor.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: April 4, 2017
    Assignee: General Electric Company
    Inventors: Christof Martin Sihler, Manoj Ramprasad Shah, Siddharth Navinchandra Ashar, Simon Herbert Schramm, Svend Erik Rocke, Vittorio Michelassi
  • Publication number: 20170058951
    Abstract: Gas bearing for an aspirating seal assembly is disclosed. The gas bearing includes a bearing body having a bearing surface. The gas bearing further includes a first through-hole disposed in the bearing body, and a plurality of second through-holes spaced apart from each other and disposed around the first through-hole. The first through-hole is characterized by a size, and a first central axis. Each second through-hole is characterized by a size, and a second central axis. The second central axis of each second through-hole in the plurality of second through-holes intersects the first central axis at an angle in a range from about 30 degrees to about 150 degrees or at an angle in a range from about ?30 degrees to about ?150 degrees. Size of at least one through-hole in the plurality of second through-holes is different from the size of the first through-hole.
    Type: Application
    Filed: August 26, 2015
    Publication date: March 2, 2017
    Inventors: Rodrigo Rodriguez Erdmenger, Christopher Edward Wolfe, Vittorio Michelassi, Quang Tue Nguyen Tran, Nathan Evan McCurdy Gibson
  • Publication number: 20170051581
    Abstract: A method of operating a hydrocarbon extraction field with the aid of a computer includes programming the computer with a virtual flow meter model. The model may be written with a notation that represents at least one of mass flow, temperature and pressure at extremities of a plurality of pressure loss elements (PLEs). The PLEs may include a plurality of wells located in the hydrocarbon extraction field. The method may further include the computer estimating, with use of the model, respective mass flow rates from a plurality of the wells. The method may further include controlling elements of the hydrocarbon extraction field based at least in part on the estimated mass flow rates.
    Type: Application
    Filed: August 19, 2015
    Publication date: February 23, 2017
    Inventors: Luca Parolini, Vittorio Michelassi
  • Patent number: 9574567
    Abstract: A supersonic compressor rotor and method of compressing a fluid is disclosed. The rotor includes a first and a second rotor disk, a first set and a second set of rotor vanes. The first set and second set of rotor vanes are coupled to and disposed between the first and second rotor disks. Further, the first set of rotor vanes are offset from the second set of rotor vanes. The rotor includes a first set of flow channels defined by the first set of rotor vanes disposed between the first and second rotor disks. Similarly, the rotor includes a second set of flow channels defined by the second set of rotor vanes disposed between the first and second rotor disks. Further, the rotor includes a compression ramp disposed on a rotor vane surface opposite to an adjacent rotor vane surface.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: February 21, 2017
    Assignee: General Electric Company
    Inventors: Rajesh Kumar Venkata Gadamsetty, Chaitanya Venkata Rama Krishna Ongole, Douglas Carl Hofer, Vittorio Michelassi
  • Patent number: 9574562
    Abstract: A pump for pumping a multiphase fluid includes a housing and a rotor with an outer surface. A plurality of inducer vanes are attached to the rotor hub, each having a leading edge and a trailing edge where the leading edge of one inducer vane overlaps the trailing edge of an adjacent inducer vane by a first overlap angle. A plurality of impeller vanes are also attached to the hub. The impeller vanes each have a leading edge and a trailing edge where the leading edge of one impeller vane overlaps the trailing edge of an adjacent impeller vane by a second overlap angle larger than the first overlap angle. The pump includes a rotor flow channel extending between the hub outer surface and the housing inner surface. The rotor flow channel has an inlet area and an outlet area, whereby the outlet area is smaller than the inlet area.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: February 21, 2017
    Assignee: General Electric Company
    Inventors: Jeremy Daniel Van Dam, Vittorio Michelassi, Ismail Hakki Sezal, Xuele Qi, Rene du Cauze de Nazelle, Vishal Gahlot, Scott Richard Erler
  • Publication number: 20160356805
    Abstract: A flow angle probe is provided comprising: (a) a probe vane configured to contact a moving fluid within a fluid conduit; (b) an optional probe mounting mechanically coupled to the probe vane; (c) a rotary shaft coupled either to the optional probe mounting or the probe vane; (d) a rotary encoder coupled to the rotary shaft; (e) a sensor hermetically isolated from the probe vane and configured to sense a change in position of the rotary encoder; and (f) a probe housing encompassing at least a portion of the rotary shaft, the rotary encoder and the sensor. The novel flow angle probes disclosed herein may be used in a wide variety of turbomachines and fluid processing systems, and applications, including turbomachine design and operational control, as well as in flow assurance.
    Type: Application
    Filed: August 6, 2015
    Publication date: December 8, 2016
    Inventors: Carsten Michael Schneider, Vittorio Michelassi, Andreas Herrig, Erik Mele, Nathaniel David Varano, Brent David Michalowski, Kenton Travis Shonhor
  • Patent number: 9512700
    Abstract: A subsea fluid processing system is provided containing a liquid reservoir, an inlet tank, a pump, an outlet system, and a fluid re-circulation loop. The liquid reservoir circulates a primer liquid stream to the inlet tank via the fluid re-circulation loop. The inlet tank further receives a first production fluid stream and mixes it with the primer liquid stream to produce thereby a second production fluid stream having a reduced gas volume fraction (GVF) relative to the first production fluid stream. The pump receives the second production fluid stream from the inlet tank and increases its pressure. Further, the outlet system containing the liquid reservoir receives the second production fluid stream from the pump and separates at least a portion of the primer liquid stream from a principal production stream. The primer liquid includes at least one exogenous liquid not derived from the first production fluid stream.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: December 6, 2016
    Assignee: General Electric Company
    Inventors: Guillaume Becquin, Siddharth Navinchandra Ashar, Jr., Vittorio Michelassi, Rosa Castane Selga, Rene Du Cauze De Nazelle
  • Patent number: 9500122
    Abstract: The method includes moving at least one of a first support and a second support to vary a position of the plurality of main blades and tandem blades relative to each other to control one or more flow control characteristics across the turbine. The turbine includes a nozzle having the plurality of main blades and tandem blades. The plurality of main blades are coupled to the first support and the plurality of tandem blades are coupled to the second support disposed spaced apart from the first support.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: November 22, 2016
    Assignee: General Electric Company
    Inventors: Cathal Clancy, Daniel Edward Loringer, Rodrigo Rodriguez Erdmenger, Vittorio Michelassi
  • Patent number: 9458863
    Abstract: In one embodiment, a turbomachine for imparting energy to a multiphase fluid is provided. The turbomachine comprises a casing having an inlet and an outlet; an axial stage part comprising at least one axial stage; a mixed-flow stage part comprising at least one mixed-flow stage fluidly connected to the axial stage part; and a centrifugal stage part comprising at least one centrifugal stage fluidly connected to the mixed-flow stage part. The axial stage is defined by an angle between an axial impeller outlet flow and an axis parallel to a rotational axis of the shaft having a value between 0° and 5°, the mixed-flow stage by an angle having a value between 5° and 80°, and the centrifugal stage by an angle having a value between 80° and 90°.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: October 4, 2016
    Assignee: NUOVO PIGNONE S.P.A.
    Inventors: Lorenzo Bergamini, Vittorio Michelassi
  • Publication number: 20160222981
    Abstract: A multistage centrifugal compressor is described. The compressor comprises a casing and a shaft rotatingly supported in the casing by at least a first bearing and a second bearing. At least one in-between-bearing impeller is mounted on the shaft, between the first bearing and the second bearing. An overhung impeller is mounted at one end of the shaft. A first diaphragm arrangement is further located in the casing. The first diaphragm arrangement comprises return a channel assembly with a plurality of stationary return channel blades defining a plurality of return vanes for redirecting compressed gas from an exit location of the overhung impeller to an inlet location of the in-between-bearings impeller. The first diaphragm arrangement houses one of the first bearing and second bearing.
    Type: Application
    Filed: September 2, 2014
    Publication date: August 4, 2016
    Inventors: Vittorio MICHELASSI, Ismail Hakki SEZAL, Christian AALBURG
  • Publication number: 20160218590
    Abstract: A rotating machinery equipment is disclosed, comprising a rotating electrical machine having a stator and a rotating shaft, whereon a rotor is mounted. The machinery equipment further comprises a cooling fan comprised of a rotating impeller mounted on the rotating shaft for co-rotation therewith. Cooling gas passages are provided for delivering compressed cooling gas through the stator and rotor. The cooling gas is delivered by the impeller into a cooling-gas distribution chamber. The pressure of the cooling gas in the cooling-gas distribution chamber generates an axial force balancing the axial thrust generated on the electrical machine by the cooling gas flow.
    Type: Application
    Filed: March 6, 2014
    Publication date: July 28, 2016
    Inventors: Ilia OXMAN, Vittorio MICHELASSI