Patents by Inventor Norman Arnold Turnquist

Norman Arnold Turnquist 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).

  • Publication number: 20100239415
    Abstract: A spring assembly for a retractable turbine rotor seal supported in an arcuate segment may include in one embodiment a first radially inner restraining plate having a lower surface adapted to engage a surface of a turbine stator, and a flat upper surface provide with an upstanding hub; a second radially outer restraining plate having a flat lower surface and an upper surface adapted to engage a surface of the arcuate segment, the radially outer restraining plate formed with an opening receiving the upstanding hub; and at least one spring telescoped over the upstanding hub and exerting a radially outward biasing force on the second radially outer restraining plate, and adapted to exert a radially outward retracting force on the arcuate segment.
    Type: Application
    Filed: March 20, 2009
    Publication date: September 23, 2010
    Applicant: General Electric Company
    Inventors: Norman Arnold TURNQUIST, Shorya nmn AWTAR, Mustafa GURSOY, Karatik Mangudi VARADARAJAN
  • Publication number: 20100213675
    Abstract: A compliant plate seal arrangement manufacturing method is provided. A compliant plate seal manufacturing method includes assembling a plurality of t-shims and a plurality of spacer shims into a straight weld fixture, thereby forming a shim pack having a front and rear end and sides, welding the sides of the shim pack to a top plate, removing a portion of the weld fixture, removing the plurality of spacer shims, shaping the shim pack into a target diameter, and applying a radial flow plate to the leaf pack.
    Type: Application
    Filed: February 20, 2009
    Publication date: August 26, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: William Edward Adis, Bernard Arthur Couture, JR., Hrishikesh Vishvas Deo, Sean Douglas Feeny, Michael Dennis Mack, Daniel Frederick Purdy, Norman Arnold Turnquist
  • Publication number: 20100176556
    Abstract: A compliant plate seal manufacturing method is provided. The method includes assembling a plurality of compliant plates and a plurality of spacer shims into a weld fixture, thereby forming a leaf pack having a front and rear end and sides and a curvature, welding the sides of the leaf pack to hook plates on the weld fixture, removing a portion of the weld fixture, removing a portion of the hook plates and applying a radial flow plate to the leaf pack.
    Type: Application
    Filed: January 12, 2009
    Publication date: July 15, 2010
    Applicant: General Electric Company
    Inventors: Michael Dennis Mack, William Edward Adis, Hrishikesh Vishvas Deo, Daniel Frederick Purdy, Norman Arnold Turnquist
  • Publication number: 20100158674
    Abstract: A steam turbine comprises a steam turbine casing, a rotor, and at least one compliant plate seal assembly situated between the casing and the rotor. The compliant plate seal assembly comprises a supporting member being stationary with respect to the casing, a plurality of plate members movably mounted to the supporting member and extending towards the rotor, each plate member being inclined with respect to a rotation direction of the rotor, and an actuator for selectively exerting a pressure to retract the plate members in a direction away from the rotor.
    Type: Application
    Filed: December 22, 2008
    Publication date: June 24, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Norman Arnold Turnquist, Bernard Arthur Couture, JR., Mark William Kowalczyk, Frederick George Baily, Mark Edward Burnett
  • Publication number: 20100143102
    Abstract: A self-correcting seal assembly comprises a plurality of compliant plates coupled circumferentially to a stationary component, at least one slot in the compliant plates extending from the stationary component towards a rotor; and a resistance member coupled to a stationary component. The resistance member comprising at least one annular ring extending from the stationary component towards a rotor and through the slot. The seal assembly is configured to create passive feedback on hydrostatic forces in response to a tip-clearance between the rotor and tips of the compliant plates.
    Type: Application
    Filed: February 15, 2010
    Publication date: June 10, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Hrishikesh Vishvas Deo, Norman Arnold Turnquist, Barbaros Yildirim
  • Patent number: 7703774
    Abstract: A shaft seal reduces leakage between a rotating shaft such as a rotor and a stator. The shaft seal or shingle seal includes a plurality of compliant-plate members attached to the stator in facing relation. The compliant-plate members define a sealing ring between the stator and the rotating shaft. Each of the compliant-plate members includes a plurality of shingles, where adjacent compliant-plate members are disposed relative to each other such that the shingles are at least partially staggered in a direction of axial leakage.
    Type: Grant
    Filed: September 12, 2006
    Date of Patent: April 27, 2010
    Assignee: General Electric Company
    Inventors: Shorya Awtar, William Edward Adis, Mark William Kowalczyk, Norman Arnold Turnquist
  • Publication number: 20100080500
    Abstract: A fiberoptic system for clearance detection between rotating and stationary turbomachinery components is presented. The system comprises an optical fiber probe comprising a plurality of optical fibers, at least one of the optical fibers comprising a transmission fiber and at least one of the optical fibers comprising a signal fiber; a light source for providing light through the transmission fiber towards a target; filters for receiving light from the signal fibers, at least two of the filters for filtering different wavelengths; and at least one photodetector for receiving filtered light from the filters.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Danian Zheng, Peter John Eisenzopf, Kevin Thomas McCarthy, Roy Paul Swintek, Norman Arnold Turnquist, Hua Xia
  • Publication number: 20100078893
    Abstract: An active retractable seal assembly is configured for use between a rotating component and a stationary component of turbo machinery is disclosed. The seal assembly includes a seal mounted to the stationary component. The seal is movable towards and away from the rotating component between a respective closed position and an open position as a function of pressure drop across the seal. The seal includes an active seal segment, a non-active seal segment, and a fluid by-pass circuit. The fluid by-pass circuit is configured for directing fluid around the active seal segment to reduce pressure drop across the active seal segment thereby resulting in the active seal segment moving towards an open position under the action of one or more biasing devices while maintaining the non-active seal segment in a closed position.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Norman Arnold Turnquist, Shorya Awtar
  • Publication number: 20100074572
    Abstract: A device includes a stationary, rotary component, and a fiber optic sensing system. The fiber optic sensing system includes a cable having one or more fiber optic sensors disposed on the stationary component, the rotary component, or combinations thereof. The fiber optic sensing system is configured to detect one or more first parameters including temperature, strain, pressure, vibration, torque; or combinations thereof related to the stationary component, the rotary component, or combinations thereof. The one or more first parameters is used to determine one or more second parameters including thermal expansion, clearance, fluid flow rate variation, condensation, fluid leakage, thermal loss, life, thermal stress, or combinations thereof related to the stationary component, the rotary component, or combinations thereof.
    Type: Application
    Filed: September 24, 2008
    Publication date: March 25, 2010
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Danian Zheng, Norman Arnold Turnquist, Peter John Eisenzopf, Kevin Thomas McCarthy, Hua Xia, Roy Paul Swintek
  • Publication number: 20100047058
    Abstract: A method for measuring temperature of a rotating body such as a steam turbine is provided. The method includes striking a light beam onto the rotating body onto the rotating body and measuring a reflectance of the light beam from the rotating body. The method further includes obtaining a temperature of the rotating body based upon the measured reflectance.
    Type: Application
    Filed: August 25, 2008
    Publication date: February 25, 2010
    Applicant: General Electric Company, a New York Corporation
    Inventors: Chayan Mitra, Ayan Banerjee, Norman Arnold Turnquist, Danian Zheng, Sandip Maity, Roy Paul Swintek
  • Patent number: 7651101
    Abstract: A shaft seal serves to reduce leakage between a rotating shaft and a static shell. The shaft seal includes a plurality of compliant plate members, each having a root and a tip. The compliant plate members are secured to the static shell at their root in facing relation. The tips of the compliant plate members define a sealing ring between the static shell and the rotating shaft. An axial flow resistance member is disposed within the compliant plate members and serves as a barrier to axial leakage flow between the compliant plate members.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: January 26, 2010
    Assignee: General Electric Company
    Inventors: Shorya Awtar, Norman Arnold Turnquist
  • Publication number: 20090320609
    Abstract: A fiberoptic multi-parameter sensing system for monitoring turbomachinery system shaft static and dynamic torques, vibration modes and associated operation status includes a multi-furcated fiber bundle based optical splitter configured to transmit light to a surface of at least one turbomachinery system shaft through a plurality of optical fiber bundles disposed at a plurality of locations in proximity to the surface of the at least one shaft, in which the plurality of locations together are arranged in a substantially axial direction between the ends of the at least one shaft.
    Type: Application
    Filed: June 25, 2008
    Publication date: December 31, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Hua Xia, Norman Arnold Turnquist, David So Keung Chan, Danian Zheng, Kevin Thomas McCarthy, Richard Joseph Gawrelski, Matthew Damian Pietrykowski, Alexander Seth Ross, Yun Li, Juntao Wu
  • Publication number: 20090297341
    Abstract: Disclosed is a seal for turbomachinery including a seal face locatable between a first turbomachinery component and a second turbomachinery component. At least one fluid channel extends through the seal. The at least one fluid channel is capable of injecting fluid flow between the first turbomachinery component and the second turbomachinery component at the seal face thereby disrupting a leakage flow between the first turbomachinery component and the second turbomachinery component. Further disclosed is a turbomachine utilizing the seal.
    Type: Application
    Filed: June 2, 2008
    Publication date: December 3, 2009
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Norman Arnold Turnquist, Kevin L. Bruce, Ciro Cerretelli, John Ernest Tourigny
  • Patent number: 7549834
    Abstract: An actuation pressure control system effects actuation of adjustable seal segments between stationary and rotating turbomachinery members. At least one actuator is coupled with each of the adjustable seal segments and controls a position of the seal segments, respectively. A pressure system is disposed within the turbomachinery that measures or estimates ambient pressure representing an actuator back pressure acting against the actuator. A pressure regulator via a controller pressurizes the actuator to a level sufficient for a desired seal operation and controls actuator pressure based on the actuator back pressure.
    Type: Grant
    Filed: June 19, 2006
    Date of Patent: June 23, 2009
    Assignee: General Electric Company
    Inventors: Darrin Glen Kirchhof, William Charles Below, Mark Edward Burnett, Frederick George Baily, Shorya Awtar, Norman Arnold Turnquist
  • Patent number: 7419164
    Abstract: A shaft seal serves to reduce leakage between a rotating shaft and a static shell. The shaft seal includes a plurality of compliant plate members, each having a root and a tip. The compliant plate members are secured to the static shell at their root in facing relation. The tips of the compliant plate members define a sealing ring between the static shell and the rotating shaft. An axial flow resistance member is disposed within the compliant plate members and serves as a barrier to axial leakage flow between the compliant plate members.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: September 2, 2008
    Assignee: General Electric Company
    Inventors: Shorya Awtar, Norman Arnold Turnquist
  • Publication number: 20080169614
    Abstract: A shaft seal assembly between a rotating shaft and a static shell is disclosed. The shaft seal assembly includes a seal housing in mechanical contact with the static shell, at least two rigid members of the seal housing, and a plurality of compliant plate members defining a sealing ring between the static shell and the rotating shaft. The plurality of compliant plate members is disposed between the at least two rigid members and retained within the seal housing by a compressive force between the at least two rigid members.
    Type: Application
    Filed: January 12, 2007
    Publication date: July 17, 2008
    Inventors: Shorya Awtar, Norman Arnold Turnquist, Jason Paul Mortzheim
  • Publication number: 20080131269
    Abstract: A method of assembling a turbomachine that includes a rotor and a stationary component is provided. The method includes coupling a housing to the stationary component using at least one biasing member, wherein the housing extending circumferentially about the rotor. The method also includes coupling at least one annular ring to the housing, and coupling a plurality of plate members to the housing such that the at least one annular ring extends from the housing towards the rotor and partially through the plurality of plate members.
    Type: Application
    Filed: February 18, 2008
    Publication date: June 5, 2008
    Inventors: Hrishikesh Vishvas Deo, Norman Arnold Turnquist, Frederick George Baily, Bernard Arthur Couture, Sean Douglas Feeny, William Edward Adis, Shorya Awtar
  • Publication number: 20080107525
    Abstract: A shaft seal reduces leakage between a rotating shaft and a stator. The shaft seal includes a plurality of plate members attached to the stator in facing relation. The plate members define a sealing ring between the stator shell and the rotating shaft. A thickness of the plate members tapers from thick to thin from a stator end to a rotating shaft end. In this manner, with the more tightly packed tips of the plate members, axial leakage is reduced by tapering the plate members so that the plate roots are thicker than the plate tips.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 8, 2008
    Applicant: General Electric Company
    Inventors: William Edward Adis, Norman Arnold Turnquist, Sean Douglas Feeny, Shorya Awtar, Jason P. Mortzheim
  • Publication number: 20080098884
    Abstract: Disclosed is an actuator that includes a cylinder having an input port, a piston disposed at least partially inside of the cylinder, and one or more piston rings disposed in a circumferential piston ring groove or grooves. The actuator also includes at least one spring, inserted into the circumferential piston ring groove adjacent to the one or more piston rings and a high pressure side of said piston ring. The spring preloads the one or more piston rings to seal between a low pressure face of the one or more piston rings and a low pressure face of the circumferential piston ring groove. The invention also includes a method for moving an adjustable seal in a radial direction using the piston-ring sealed actuator. The method includes moving the adjustable seal in an axial direction, breaking a primary axial contact between the adjustable seal and a primary sealing face.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 1, 2008
    Inventors: Kripa Kiran Varanasi, Shorya Awtar, Frederick George Baily, Mark Edward Burnett, Farshad Ghasripoor, Imdad Imam, Norman Arnold Turnquist
  • Publication number: 20080102296
    Abstract: A coated turbine engine component includes a turbine engine component and an erosion resistant coating disposed on at least a portion of a surface of the turbine engine component using electron beam physical vapor deposition or ion plasma cathodic arc deposition.
    Type: Application
    Filed: October 26, 2006
    Publication date: May 1, 2008
    Inventors: Farshad Ghasripoor, Norman Arnold Turnquist, Kripa Kiran Varanasi, Reed Roeder Corderman, Sean Douglas Feeny