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: 20040068349
    Abstract: A vibration control system for a rotary machine having a rotor, includes a sensor disposed within the rotary machine for sensing vibration of the rotor, a vibration damping device disposed within the rotary machine for imparting a reaction force to the rotor, and a controller arranged in operable communication with the sensor and the vibration damping device. The controller is adapted to receive a sensor signal from the sensor and to send a control signal to the vibration damping device for damping the vibration of the rotor.
    Type: Application
    Filed: October 7, 2002
    Publication date: April 8, 2004
    Inventors: Huageng Luo, Norman Arnold Turnquist, Imdad Imam
  • Publication number: 20040036227
    Abstract: Multistage brush seals are made by initially specifying designs thereof for collectively sharing a differential pressure along an adjacent land subject to relative rotation with the seals. The seals are modified to share the loading without blowdown therefrom. The seals are further modified to ensure rotational stability with the land. The seals are built and tested under pressure to determine pressure blowdown thereof. And then, the seals are again modified to share the pressure loading under blowdown. In this way, the seals share the load in situ under the effects of blowdown.
    Type: Application
    Filed: August 26, 2002
    Publication date: February 26, 2004
    Applicant: General Electric Company
    Inventors: Hamid Reza Sarshar, Norman Arnold Turnquist, Osman Saim Dinc
  • Patent number: 6692228
    Abstract: An insert assembly is provided for a rotary machine wherein the rotary machine comprises a rotor and a casing. The rotor comprises a generally longitudinally-extending axis. The casing is generally coaxially aligned with the axis. The casing circumferentially surrounds and is radially spaced apart from the rotor. The insert assembly comprises a channel circumferentially disposed on the rotor and an insert circumferentially disposed in such channel such that the insert assembly is configured to thermally isolate frictional heat from the rotor to the insert.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: February 17, 2004
    Assignee: General Electric Company
    Inventors: Norman Arnold Turnquist, Christopher Edward Wolfe, Frederick George Baily, John Francis Nolan, George Ernest Reluzco
  • Patent number: 6685427
    Abstract: A seal is provided for controlling flow of a fluid in a fluid path in a rotary machine. The seal comprises a brush seal carrier having a front plate and a back plate disposed therein. A brush seal is disposed between the front plate and the back plate. In addition, a flexible member is disposed between the brush seal and the back plate for reducing stress in the brush seal.
    Type: Grant
    Filed: July 23, 2002
    Date of Patent: February 3, 2004
    Assignee: General Electric Company
    Inventors: Vikas Bhushan Dhar, Norman Arnold Turnquist, Ramesha Guntanur Venkatesh, Lokesh Agrawal
  • Publication number: 20040018085
    Abstract: A seal is provided for controlling flow of a fluid in a fluid path in a rotary machine. The seal comprises a brush seal carrier having a front plate and a back plate disposed therein. A brush seal is disposed between the front plate and the back plate. In addition, a flexible member is disposed between the brush seal and the back plate for reducing stress in the brush seal.
    Type: Application
    Filed: July 23, 2002
    Publication date: January 29, 2004
    Applicant: General Electric Company
    Inventors: Vikas Bhushan Dhar, Norman Arnold Turnquist, Ramesha Guntanur Venkatesh, Lokesh Agrawal
  • Publication number: 20040000759
    Abstract: A brush seal is provided wherein the brush seal is disposed in a section of a steam turbine for reducing leakage of a working fluid across a pressure drop. The brush seal comprises a bristle holder attachable to the steam turbine and a plurality of bristles comprising Ni, Cr, Mo, Fe, W, Mn, V, Si, and C.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 1, 2004
    Applicant: General Electric Company
    Inventors: Norman Arnold Turnquist, Thomas Martin Angeliu, Peter Louis Andresen, Mark Edward Burnett, Frederick George Baily
  • Patent number: 6669443
    Abstract: In a steam turbine, a combined brush and labyrinth seal is provided between a diaphragm web and a radially outwardly projecting platform between axially adjacent wheels on the rotor. The brush seal is located upstream of the labyrinth seal teeth. The platform has at least one and preferably a pair of flanges or fins projecting in opposite axial directions adjacent radial outer ends of the platform. Non-uniform heat distribution resulting from the frictional contact between the bristles of the brush seal and a sealing surface on the platform along the rotor surface affecting rotor dynamics is thereby eliminated or minimized.
    Type: Grant
    Filed: November 16, 2001
    Date of Patent: December 30, 2003
    Assignee: General Electric Company
    Inventors: Mark Edward Burnett, Christopher Edward Wolfe, Frederick George Baily, Norman Arnold Turnquist, Bruce William Brisson, David Alan Caruso
  • Patent number: 6655696
    Abstract: A seal carrier is provided for a rotary machine wherein the seal carrier comprises a packing ring coupled to a seal and wherein the packing ring comprises a channel disposed therein. In addition, a displacement apparatus is disposed in the channel for radially positioning the seal to control a flow of a fluid in a fluid path.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: December 2, 2003
    Assignee: General Electric Company
    Inventors: Biao Fang, Norman Arnold Turnquist, Hamid Reza Sarshar, Mahmut Faruk Aksit, Mark Edward Burnett, Frederick George Baily, Mehmet Demiroglu
  • Publication number: 20030185675
    Abstract: An insert assembly is provided for a rotary machine wherein the rotary machine comprises a rotor and a casing. The rotor comprises a generally longitudinally-extending axis. The casing is generally coaxially aligned with the axis. The casing circumferentially surrounds and is radially spaced apart from the rotor. The insert assembly comprises a channel circumferentially disposed on the rotor and an insert circumferentially disposed in such channel such that the insert assembly is configured to thermally isolate frictional heat from the rotor to the insert.
    Type: Application
    Filed: March 14, 2002
    Publication date: October 2, 2003
    Applicant: General Electric CRD
    Inventors: Norman Arnold Turnquist, Christopher Edward Wolfe, Frederick George Baily, John Francis Nolan, George Ernest Reluzco
  • Patent number: 6589012
    Abstract: In a steam turbine, a combined brush and labyrinth seal is provided between a diaphragm web and a sealing surface on a rotatable component radially outwardly of the rotor surface. The contact between the brush seal and sealing surface lies along an axially upstream projecting flange of an annular platform such that heat generated by frictional contact between the bristles and the sealing surface has minimal effect on the rotor surface and hence rotor dynamics. A backup labyrinth seal is provided between the web and platform. Additionally, axially upstream projecting flanges are provided on the downstream buckets and which flanges are spaced radially outwardly of the rotor surface and lie in registration with the diaphragm web. Labyrinth teeth seal between the diaphragm web and the bucket flanges serving as a backup seal.
    Type: Grant
    Filed: September 24, 2001
    Date of Patent: July 8, 2003
    Assignee: General Electric Company
    Inventors: Mark Edward Burnett, Christopher Edward Wolfe, Frederick George Baily, Norman Arnold Turnquist, Bruce William Brisson, David Alan Caruso
  • Publication number: 20030106214
    Abstract: A method of retrofitting a gas turbine wherein the gas turbine comprises a stator and a rotor. The rotor is coaxially aligned with the stator and spaced apart from the stator so as to define a gap therebetween. The method of retrofitting comprises fixedly securing a sealing member to the stator. The sealing member is configured to restrict a flow of a fluid medium in a fluid path across the gap and generate a pressure drop generally transverse to the gap during operation of the gas turbine.
    Type: Application
    Filed: December 6, 2001
    Publication date: June 12, 2003
    Applicant: General Electric Company
    Inventors: Jason Paul Mortzheim, Norman Arnold Turnquist, Osman Saim Dinc
  • Publication number: 20030102630
    Abstract: The present invention provides an actuated seal assembly for controlling flow in a fluid path in turbomachinery comprising a seal and a seal carrier coupled to the seal. A displacement apparatus is coupled to the seal carrier for positioning the seal so as to control the flow in the fluid path. In addition, a drive system is provided for powering the displacement apparatus.
    Type: Application
    Filed: December 5, 2001
    Publication date: June 5, 2003
    Applicant: General Electric Company
    Inventors: Osman Saim Dinc, Norman Arnold Turnquist, Mehmet Demiroglu, Hamid Reza Sarshar, Ahmad Safi, Mahmut Faruk Aksit, Roger Neal Johnson, Anthony Holmes Furman, Imdad Imam, Gerald Burt Kliman, James Hopkins, Richard Robert Larsen, David Michael Prowse, Steven Wayne Russell
  • Patent number: 6572115
    Abstract: A seal assembly is provided for a rotary machine wherein the rotary machine comprises a rotor and a casing. The rotor comprises a generally longitudinally-extending axis. The casing is generally coaxially aligned with the axis. The casing circumferentially surrounds, is radially spaced apart from the rotor, and comprises an inner circumferential channel generally coaxially aligned with the rotor. The seal assembly comprises a plurality of seal carrier segments fixedly disposed in a circumferential array in the inner circumferential channel. Each of the seal carrier segments comprises a seal carrier channel. At least one of the seal carrier segments comprises at least one fluid inlet disposed therein. In addition, the seal assembly comprises a (meaning at least one) seal disposed in the seal carrier channel and is movable between radially inward and radially outward positions upon introduction of fluid medium in the fluid inlet.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: June 3, 2003
    Assignee: General Electric Company
    Inventors: Hamid Reza Sarshar, Norman Arnold Turnquist, Biao Fang
  • Patent number: 6571470
    Abstract: A method of retrofitting a gas turbine wherein the gas turbine comprises a stator and a rotor. The rotor is coaxially aligned with the stator and spaced apart from the stator so as to define a gap therebetween. The method of retrofitting comprises fixedly securing a sealing member to the stator. The sealing member is configured to restrict a flow of a fluid medium in a fluid path across the gap and generate a pressure drop generally transverse to the gap during operation of the gas turbine.
    Type: Grant
    Filed: December 6, 2001
    Date of Patent: June 3, 2003
    Assignee: General Electric Company
    Inventors: Jason Paul Mortzheim, Norman Arnold Turnquist, Osman Saim Dinc
  • Publication number: 20030095865
    Abstract: In a steam turbine, a combined brush and labyrinth seal is provided between a diaphragm web and a radially outwardly projecting platform between axially adjacent wheels on the rotor. The brush seal is located upstream of the labyrinth seal teeth. The platform has at least one and preferably a pair of flanges or fins projecting in opposite axial directions adjacent radial outer ends of the platform. Non-uniform heat distribution resulting from the frictional contact between the bristles of the brush seal and a sealing surface on the platform along the rotor surface affecting rotor dynamics is thereby eliminated or minimized.
    Type: Application
    Filed: November 16, 2001
    Publication date: May 22, 2003
    Inventors: Mark Edward Burnett, Christopher Edward Wolfe, Frederick George Baily, Norman Arnold Turnquist, Bruce William Brisson, David Alan Caruso
  • Patent number: 6558118
    Abstract: A steam turbine has a rotor mounting axially spaced rotor wheels having male dovetails for mounting a plurality of axially spaced buckets having female dovetails. A plurality of arcuate bridging members extend axially between the axially adjacent bucket dovetails at locations spaced radially outwardly of the surface of the rotor shaft. A diaphragm in radial opposition to the bridging member mounts a brush seal having bristles engaging the bridging member. The bridging member carries backup labyrinth seal teeth for sealing with the diaphragm. The friction generated by contact between the brush seal bristles and bridging members lies radially outwardly of the rotor whereby non-uniform distribution of heat about the rotor surface due to frictional contact with the brush seal is avoided, with consequent avoidance of rotor bowing.
    Type: Grant
    Filed: November 1, 2001
    Date of Patent: May 6, 2003
    Assignee: General Electric Company
    Inventors: Bruce William Brisson, Mark Edward Burnett, Frederick George Baily, David Alan Caruso, Norman Arnold Turnquist, Christopher Edward Wolfe
  • Publication number: 20030082049
    Abstract: A steam turbine has a rotor mounting axially spaced rotor wheels having male dovetails for mounting a plurality of axially spaced buckets having female dovetails. A plurality of arcuate bridging members extend axially between the axially adjacent bucket dovetails at locations spaced radially outwardly of the surface of the rotor shaft. A diaphragm in radial opposition to the bridging member mounts a brush seal having bristles engaging the bridging member. The bridging member carries backup labyrinth seal teeth for sealing with the diaphragm. The friction generated by contact between the brush seal bristles and bridging members lies radially outwardly of the rotor whereby non-uniform distribution of heat about the rotor surface due to frictional contact with the brush seal is avoided, with consequent avoidance of rotor bowing.
    Type: Application
    Filed: November 1, 2001
    Publication date: May 1, 2003
    Inventors: Bruce William Brisson, Mark Edward Burnett, Frederick George Baily, David Alan Caruso, Norman Arnold Turnquist, Christopher Edward Wolfe
  • Patent number: 6550777
    Abstract: A plurality of packing ring segments are provided in a stationary component and about a rotating shaft. Each packing ring segment includes a brush seal insert and a plurality of labyrinth seal teeth along a concave sealing face thereof. Each segment is formed of a pair of components which, in assembly, have a split line through a slot receiving the brush seal insert. The brush seal insert includes a pair of narrow strips or rods welded to outer ends of the bristle pack and is bendable to a range of diameters. By forming forward and backing surfaces defining the slot integral with the components, the width of the bristle slot and the gap between the bristle pack and the forward surface can be readily manufactured and obtained.
    Type: Grant
    Filed: June 19, 2001
    Date of Patent: April 22, 2003
    Assignee: General Electric Company
    Inventors: Norman Arnold Turnquist, Frederick George Baily, Mark Edward Burnett
  • Patent number: 6547522
    Abstract: The present invention provides, in one embodiment, an annular turbine seal for disposition in a turbine between a rotatable component having an axis of rotation and a turbine housing about the same axis of rotation. The turbine seal has a plurality of arcuate seal carrier segments that have an abradable portion secured to the seal carrier segments. In addition, at least one spring is disposed on the seal carrier segment to exert a force and maintain the seal carrier segment adjacent to the rotatable component.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: April 15, 2003
    Assignee: General Electric Company
    Inventors: Norman Arnold Turnquist, Mahmut Faruk Aksit, Farshad Ghasripoor, Raymond Edward Chupp
  • Publication number: 20030059298
    Abstract: In a steam turbine, a combined brush and labyrinth seal is provided between a diaphragm web and a sealing surface on a rotatable component radially outwardly of the rotor surface. The contact between the brush seal and sealing surface lies along an axially upstream projecting flange of an annular platform such that heat generated by frictional contact between the bristles and the sealing surface has minimal effect on the rotor surface and hence rotor dynamics. A backup labyrinth seal is provided between the web and platform. Additionally, axially upstream projecting flanges are provided on the downstream buckets and which flanges are spaced radially outwardly of the rotor surface and lie in registration with the diaphragm web. Labyrinth teeth seal between the diaphragm web and the bucket flanges serving as a backup seal.
    Type: Application
    Filed: September 24, 2001
    Publication date: March 27, 2003
    Inventors: Mark Edward Burnett, Christopher Edward Wolfe, Frederick George Baily, Norman Arnold Turnquist, Bruce William Brisson, David Alan Caruso