Including Axial Flow Blade Set Patents (Class 415/149.2)
  • 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
  • Publication number: 20150135696
    Abstract: An axial-flow turbine assembly that includes one or more features for enhancing the efficiency of the turbine's operation. In one embodiment, the turbine assembly includes a turbine rotor having blades that adjust their pitch angle in direct response to working fluid pressure on the blades themselves or other part(s) of the rotor. In other embodiments, the turbine assembly is deployable in an application, such as an oscillating water column system, in which the flow of working fluid varies over time, for example, as pressure driving the flow changes. In a first of these embodiments, the turbine assembly includes a valve that allows the pressure to build so that the flow is optimized for the turbine's operating parameters. In a second of these embodiments, one or more variable-admission nozzle and shutter assemblies are provided to control the flow through the turbine to optimize the flow relative to the turbine's operating parameters.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 21, 2015
    Inventors: Frederick E. Becker, Francis A. DiBella, Kevin D. Fairman, Alexander Gofer
  • Patent number: 8667773
    Abstract: A turbomachine comprises a flow duct with coaxially arranged radially inner and outer endwalls, first and second sets of axially spaced rotor stages arranged between the inner and outer endwalls, and a plurality of variable endwall segments arranged along the inner endwall. The first set of rotor stages rotates in a first direction, and the second set rotates in a second direction. The first and second sets alternate in axial series along the flow duct, such that axially adjacent rotor stages rotate in different directions. The variable endwall segments are radially positionable, in order to regulate loading on the first and second sets of rotor stages by changing a cross-sectional flow area between the inner and outer endwalls.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: March 11, 2014
    Assignee: United Technologies Corporation
    Inventor: Peter D. Silkowski
  • Patent number: 8511974
    Abstract: A control mechanism is provided for moving at least two components of a gas turbine engine. The control mechanism comprises a movable actuation rod and a first linkage arrangement which includes a first bell crank connecting the actuation rod to a first component. Movement of the actuation rod produces an output motion of the first bell crank which in turn drives movement of the first component. The control mechanism further comprises a second linkage arrangement which includes a second bell crank connecting the actuation rod to a second component. Movement of the actuation rod produces an output motion of the second bell crank which in turn drives movement of the second component. The first and the second linkage arrangements are configure so that over a predetermined range of movement of the actuation rod the first component is moved which the second component is not moved.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: August 20, 2013
    Assignee: Rolls-Royce PLC
    Inventors: Ian A. Hood, Kenneth F. Udall
  • Patent number: 8061963
    Abstract: A wind turbine system includes a kite positioned upstream to a turbine to direct wind to the turbine, thereby increasing revolutions per minutes and power output of the turbine.
    Type: Grant
    Filed: June 15, 2009
    Date of Patent: November 22, 2011
    Inventor: Franklin F K Chen
  • Patent number: 7988409
    Abstract: The present invention provides means to extend the flow rate range over which a downhole turbine 70 will return a power output sufficient to meet the minimum downhole power requirements. In one embodiment, the present invention relates to an arrangement of axial vanes 77 that are situated such that the rotation of the rotor 76 generates an increasing drag force, thereby extending the upper limit of the flow rate range. In another embodiment, the present invention relates to an arrangement of restriction assemblies 75 that can be used to maximize the fluid velocity relative to the fluid flow rate past the stator 74 to achieve the necessary speed and power to rotate rotor 76, thereby extending the lower limit of the flow rate range. In another embodiment, the axial vanes 77 and restriction assemblies 75 are used in combination to further extend both the upper and lower limits of the flow rate range of the downhole turbine 70.
    Type: Grant
    Filed: February 17, 2006
    Date of Patent: August 2, 2011
    Assignee: Schlumberger Technology Corporation
    Inventor: Keith A. Moriarty
  • Patent number: 7478629
    Abstract: A compression and vacuum-producing machine includes a housing, at least one rotating disk having a plurality of blades rotationally supported within the housing, and at least one stationary disk having a plurality of blades fixedly attached to the housing. A drive shaft includes a generally tapered surface and rotatably drives the rotating disks to increase the energy of a fluid stream disposed within the housing. The compression machine includes a transmission in mechanical communication with the drive shaft to convert a rotational input to a desired rotational speed and drive the shaft at the desired speed.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: January 20, 2009
    Inventors: Facundo del Valle Bravo, Jose L. Correa
  • Patent number: 6638014
    Abstract: The invention relates to a valve arrangement (1), in particular for a power plant. A housing (2) contains a shut-off valve (3) for shutting off a fluid flow, a control valve (4) for controlling the fluid flow through a housing outlet (8) and a bypass valve (5) for controlling the fluid flow through a bypass (13). This bypass (13) branches off from the housing (2) between the shut-off valve (3) and the control valve (4).
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: October 28, 2003
    Assignee: ALSTOM (Switzerland) Ltd
    Inventors: Ralf Gerdes, Roger Padfield, Franz Suter
  • Patent number: 6443695
    Abstract: A steam turbine includes a turbine casing, in which a turbine rotor is accommodated so as to extend along a direction of flow of steam, and a plurality of turbine pressure sections are mounted to the turbine rotor, which includes, in combination, at least two or more of a turbine high pressure portion, a turbine intermediate pressure portion and a turbine low pressure portion. The turbine casing is divided into two casing sections, each of the divided turbine casing sections being further divided into a turbine casing upper half and a turbine casing lower half, and the turbine casing lower halves of the divided turbine casing sections being connected to each other by a fastening member such as stud bolt inserted from a side of the turbine low pressure portion.
    Type: Grant
    Filed: March 12, 2001
    Date of Patent: September 3, 2002
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masataka Kikuchi, Toru Takahashi
  • Patent number: 6398491
    Abstract: A multistage turbocompressor is equipped with a tapping point between two compressor stages. The guide-blade cascade of the stage arranged directly upstream or downstream of the tapping point is designed with adjustable geometry. The pressure at the tapping point can be set within wide limits, irrespective of the compressor operating point, by an adjustment of this guide-blade cascade.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: June 4, 2002
    Assignee: Alstom (Switzerland) Ltd
    Inventors: Franz Joos, Uy-Liem Nguyen, Ulrich Waltke