Pump Rotor Intermediate Coaxial Motor Rotors Patents (Class 417/351)
  • Patent number: 11454222
    Abstract: A pump system and method of operating the same may utilize two relatively smaller turbines that are attached to and used to power a single pump. The two turbines are releasably coupled to the pump via respective one-way clutches, thereby enabling the use of one or both turbines at a time to power the pump. At low loads (e.g., low pump outputs), only one turbine operates to power the pump, and at higher loads (e.g., high pump outputs), both turbines operate to power the pump. By using two smaller turbines instead of one large turbine, the range-ability of the turbine power at the most efficient operating ranges is increased. This improves the fuel efficiency of the pump system. In addition, the dual turbine driven pump system provides increased reliability by preventing the loss of all power to the pump in the event of a turbine malfunction.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: September 27, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Stanley V. Stephenson
  • Patent number: 11073048
    Abstract: The invention relates to an exhaust gas turbine, comprising a turbine wheel (7) with a multiplicity of moving blades (8) and an exhaust-gas outlet duct (15), which is arranged downstream of the moving blades of the turbine wheel. The exhaust-gas outlet duct (15) is delimited radially on the outside by an axial turbine diffuser (1) and radially on the inside, at least partially, by a spinner (2). The axial turbine diffuser (1) is formed by a number N>1 of successive conical diffuser segments. An axial diffuser opening angle A between successive diffuser segments is A>1.0°. A ratio L/H between an axial diffuser segment length L and an entry height H of the exhaust-gas outlet duct (15) is L/H>0.01. A ratio H/S between the entry height H of the exhaust-gas outlet duct and a maximum radius S of the spinner (2) is H/S>1.0. The spinner (2) is formed by a number P>1 of successive conical spinner segments. An axial spinner opening angle B between successive spinner segments is B>1.0°.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: July 27, 2021
    Assignee: ABB Schweiz AG
    Inventors: Stephan Senn, Christoph Mathey
  • Publication number: 20150110642
    Abstract: A pumping device for pumping a fluid is provided. The pumping device includes a pump and a power housing. At least a portion of the pump is positioned within the power housing. The pumping device also includes a first motor and a second motor. The first motor is operably connected to the pump and adapted to provide energy to the pump. At least a portion of the first motor is positioned within the power housing. The second motor is operably connected to the pump and adapted to provide energy to the pump. At least a portion of the second motor is positioned within the power housing.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 23, 2015
    Inventors: Mohamad Khalil Dahouk, Jason Jon Kreidler, Bruce R. Cole, Norman Carl Golm, JR., Lester Benjamin Manz, Gregory L. Gross, Michael Allen Marks, John Sheldon Wagley, Yilcan Guzelgunler
  • Publication number: 20140205475
    Abstract: An apparatus includes a pump having a pump drive shaft for operating the pump, a first motor connected via a first flexible coupling to drive one end of the shaft and a second motor connected via a second flexible coupling to drive the opposite end of the shaft. The apparatus also includes a variable speed drive connecting each of the first and second motors electrically to drive the pump drive shaft.
    Type: Application
    Filed: August 16, 2012
    Publication date: July 24, 2014
    Applicant: FRAMO ENGINEERING AS
    Inventor: Helge Dale
  • Patent number: 7467929
    Abstract: A device for axially conveying fluids, wherein the conveyor part thereof is entirely magnetically borne and the radial bearing thereof is provided with sufficient rigidity and efficiently dampened, whereby problems encountered when passing through critical speeds and the disadvantageous effects of hydrodynamic and mechanical imbalance of the rotor are avoided. The magnetic bearing is combined with a hydrodynamic bearing.
    Type: Grant
    Filed: February 18, 2002
    Date of Patent: December 23, 2008
    Assignee: Berlin Heart GmbH
    Inventors: Peter Nüsser, Johannes Mueller, Hans-Erhard Peters, Joerg Mueller, Werner Neumann, Kurt Graichen, Andreas Arndt
  • Publication number: 20080069706
    Abstract: A centrifugal pump device includes a motor unit and a pump unit. The motor unit includes two elongated stator units, and a rotor disposed rotatably on a motor housing unit between the stator units. Each of the stator units extends in a direction perpendicular to and spaced apart from a rotating axis of the rotor. The pump unit includes a pump chamber, a plurality of impeller blades disposed in the pump chamber and anchored to the rotor, a pump housing unit attached fixedly and sealingly to the motor housing unit, a liquid passage in fluid communication with the pump chamber, an inlet passage in fluid communication with the liquid passage, and an outlet passage in fluid communication with the pump chamber and extending at least partially into a between-stator region.
    Type: Application
    Filed: September 14, 2007
    Publication date: March 20, 2008
    Inventor: Kau-Chung Huang
  • Patent number: 6464472
    Abstract: A circulation fan apparatus including a hermetic vessel 1 containing a corrosive process gas therein, and a circulation fan 2 installed in the hermetic vessel, rotors 2-1, 2-2 of the circulation fan are rotatably supported by bearings, wherein the bearings comprises control-type radial magnetic bearings 4, 5 and at least control-type axial magnetic bearing 6, 7, displacement sensor targets 4-1, 5-1, 6-1, and 7-1 and rotor-side magnetic poles 4-2, 5-2, 6-2, and 7-2 of radial magnetic bearings 4 and 5 and axial magnetic bearings 6 and 7 are fixed to the rotors 2-1 and 2-2 of the circulation fan 2 and are disposed in the hermetic space communicating with the hermetic vessel, and displacement sensors 4-3, 5-3, 6-3, and 7-3 and stator-side magnetic poles 4-4, 5-4, 6-4, and 7-4 opposing the displacement sensor targets and rotor-side magnetic poles are disposed outside of the hermetic vessel with cans 14, 15, 17, and 18 interposed therebetween, whereby even when the circulation fan 2 is rotated at a high speed and u
    Type: Grant
    Filed: August 16, 2000
    Date of Patent: October 15, 2002
    Assignees: Ebara Corporation, Komatsu Ltd.
    Inventors: Shinichi Sekiguchi, Hiroyuki Shinozaki, Toshimitsu Barada, Toshiharu Nakazawa, Takeshi Kawamura
  • Patent number: 5641276
    Abstract: An electric pump includes an impeller, a shaft and a motor having at least one permanent magnet rotor and a stator. The impeller is coupled by the shaft to the at least one permanent magnet rotor of the electric motor. A hermetically sealed housing is provided in which the shaft is supported and which has openings for delivery side and suction side connections for material to be pumped. The rotor is disposed inside the housing and the stator of the electric motor is disposed outside the housing. At least one stator carrier is attached to the housing, the stator being mounted in the at least one stator carrier. The at least one stator carrier is of one-piece configuration so as to enclose the housing across an entire circumference thereof in a cup-shaped manner. The at least one stator carrier holds a liquid for cooling the at least one stator.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: June 24, 1997
    Assignee: Magnet-Motor Gesellschaft fur magnetmotorische Technik mbH
    Inventors: Gotz Heidelberg, Peter Ehrhart
  • Patent number: 4437814
    Abstract: In a dredge pump having a pump housing and an impeller in the housing, an impeller shaft projects through and beyond the housing in both directions. Two drive motors, one coupled rigidly to one end of the shaft and the other, to the other end, to drive the shaft, hence the impeller, are mounted on supports. The supports are mounted on pads made up of a pair of plates with an elastomeric block sandwiched between and bonded to them, by being connected to one of the plates of each pad. The other of the pad plates is mounted or secured to a fixed structure located with respect to the pads and impeller so that axial forces from the impeller shaft tending to put one set of pads in tension are countered by axial forces tending to put the other set of pads in compression. The pads permit substantial torsional movement, and provide compensation for slight misalignment of the drive motors, permitting the rigid coupling of the drive motors to the two ends of the impeller shaft.
    Type: Grant
    Filed: July 15, 1981
    Date of Patent: March 20, 1984
    Assignee: Delta Dredge and Pump Corporation
    Inventor: John F. Kalbac