Search Patents
  • Gas turbine internal manifold mounting arrangement
    Patent number: 8171738
    Abstract: A mounting system supporting and positioning an internal fuel manifold of a gas turbine engine includes at least a heat shield surrounding a fuel inlet of the fuel manifold, the heat shield bearing at least a portion of a load to support the fuel manifold.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: May 8, 2012
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Jason Fish, Bryan Olver
  • Integral heater for fuel conveying member
    Patent number: 7937926
    Abstract: A fuel conveying member for an engine, the fuel conveying member having heating means integrated therein to permit pyrolysis of carbonaceous deposits.
    Type: Grant
    Filed: September 12, 2008
    Date of Patent: May 10, 2011
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lev Alexander Prociw, Harris Shafique, Jason Fish, Bhawan B. Patel
  • Dual conduit fuel manifold for gas turbine engine
    Patent number: 7654088
    Abstract: Fuel conduit systems for internal installation in a gas turbine engine are provided which are low cost and easy to manufacture. First and second members co-operate to provide a channel to define a discrete fuel carrying conduit. The direction of fuel flow can be adapted to provide desired cooling effect.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: February 2, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Harris Shafique, Lev Alexander Prociw
  • Fuel manifold inlet tube
    Patent number: 7305830
    Abstract: In a gas turbine engine, a fuel inlet tube comprising a body, a channel defined in the body and in fluid communication with a manifold, and a side inlet in fluid communication with the channel, the side inlet being sealingly isolated by at least two annular sealing members concentric with each other and disposed about the tube body at longitudinally spaced part points thereon.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: December 11, 2007
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Jason Fish
  • Fuel nozzle and manifold assembly connection
    Patent number: 7617683
    Abstract: A fuel supply assembly for a gas turbine engine including a manifold portion with a transfer conduit, a fuel nozzle with an entry conduit and disconnectable means for retaining the transfer and entry conduits in mating engagement with one another.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: November 17, 2009
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lev Alexander Prociw, Alekaandar Kojovic
  • Reduced stress internal manifold heat shield attachment
    Patent number: 8572976
    Abstract: A fuel manifold assembly for a gas turbine engine fuel system comprises a fuel manifold at least partly enclosed by a heat shield, the internal manifold being made of a first material having a first coefficient of thermal expansion, and the heat shield being made of a second material having a second coefficient of thermal expansion that is lower than the first coefficient of thermal expansion.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: November 5, 2013
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Jason Fish, Bhawan B. Patel, Saeid Oskooei
  • Redundant fuel manifold sealing arrangement
    Patent number: 7559201
    Abstract: A fuel manifold of gas turbine engines comprises a tube for fluid communication with a fuel source and for connection with at least one fuel nozzle tip to thereby define a fuel conveying passage. A redundant seal is provided around the tube and covers substantially an entire length thereof to reduce a risk of fuel leakage of the fuel conveying passage.
    Type: Grant
    Filed: September 8, 2005
    Date of Patent: July 14, 2009
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lev Alexander Prociw, Harris Shafique
  • Multi-channel fuel manifold
    Patent number: 7716933
    Abstract: A fuel manifold for a gas turbine engine having a first peripheral surface having a first channel defined therein and a second peripheral surface having a second channel defined therein, each of the first and second channels being sealingly enclosed to define a corresponding conduit.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: May 18, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lev Alexander Prociw, Aleksander Kojovic, Harris Shafique
  • Gas turbine combustor and fuel manifold mounting arrangement
    Patent number: 8353166
    Abstract: A mounting system for locating a combustor and a fuel manifold of a gas turbine engine within a gas generator casing thereof is described. The mounting system comprises at least three support pin assemblies which extend radially inwardly from the gas generator casing. The support pin assemblies support both the fuel manifold and at least an upstream end of the combustor and maintaining engagement between the fuel manifold and the combustor during operation of the gas turbine engine.
    Type: Grant
    Filed: August 18, 2006
    Date of Patent: January 15, 2013
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Oleg Morenko
  • Fuel conveying member with side-brazed sealing members
    Patent number: 7942002
    Abstract: A gas turbine engine fuel nozzle system having a fuel conveying member with a channel formed in a surface thereof defined between a pair of facing spaced apart walls, and at least one sealing member disposed within the channel and sealingly fastened to the spaced apart walls.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: May 17, 2011
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Jason Fish
  • Internally mounted fuel manifold with support pins
    Patent number: 8171739
    Abstract: An apparatus for internally mounting a fuel manifold within a surrounding casing in a gas turbine engine which includes a fuel manifold and support pins which are displaceable relative to mounting portions on the fuel manifold between a retracted position, wherein the fuel manifold is able to be inserted within a casing of the engine, and an extended position, wherein the support pins project outwardly from the fuel manifold for engagement with the casing.
    Type: Grant
    Filed: April 27, 2009
    Date of Patent: May 8, 2012
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Jason Araan Fish
  • Fuel conveying member for a gas turbine engine
    Patent number: 8096130
    Abstract: A gas turbine engine fuel conveying member in fluid flow communication with at least one fuel nozzle, the fuel conveying member having at least first and second member portions sealingly engaged to one another, and means for conveying fuel defined at a junction between the first and second member portions. The means for conveying fuel is defined by at least part of two different walls of each of the first and second member portions.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: January 17, 2012
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Oleg Morenko
  • External rigid fuel manifold
    Patent number: 7992390
    Abstract: A fuel manifold of a gas turbine engine includes a tube assembly having substantially rigid inner tubes disposed inside of substantially rigid outer tubes in pairs, concentrically spaced apart by a spacer apparatus. The inner tubes form a primary fuel passage for directing a primary fuel flow and the outer tubes form a secondary fuel passage for directing a secondary fuel flow, the secondary flow being greater than the primary flow.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: August 9, 2011
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Bhawan B. Patel, Oleg Morenko
  • Fuel inlet with crescent shaped passage for gas turbine engines
    Patent number: 8096131
    Abstract: An inlet tube within a gas turbine engine which includes a primary fuel channel and a secondary fuel channel formed in a cylindrical tube body. The secondary channel has a substantially crescent shaped cross-sectional area which is complementary in shape to the primary fuel channel, such as to maximize the combined fuel flow area through the primary and secondary fuel channels relative to an outer diameter of the cylindrical tube body.
    Type: Grant
    Filed: November 14, 2007
    Date of Patent: January 17, 2012
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Reza Ziaei, Eduardo Hawie
  • Fuel manifold inlet tube
    Patent number: 7451599
    Abstract: An inlet tube supplies fuel to a manifold of a combustor in a gas turbine engine, the manifold defining a manifold plane. The inlet tube comprises a tube body having a channel providing fluid flow communication between first and second ends of the tube body. At least a portion of the channel defines a tube body plane which is spaced apart from the manifold plane.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: November 18, 2008
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Jason Fish, Bhawan B. Patel
  • Fuel manifold with reduced losses
    Patent number: 7854120
    Abstract: A fuel conveying member of a gas turbine engine fuel system conducting pressurized fluid flow is provided. The fuel conveying member comprises a body defining an L-shaped fuel flow passage therein, the L-shaped passage including an elbow. The elbow portion provides a substantially smooth fluid-dynamic transition between portions of the passage upstream and downstream thereof.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: December 21, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Bryan William Olver
  • Internal fuel manifold with turned channel having a variable cross-sectional area
    Patent number: 7607226
    Abstract: A method of manufacturing an internal manifold of a gas turbine engine including machining an annular channel in a ring by a turning process, and varying a position of a tool bit relative to the surface of the ring as a function of a relative circumferential location of the tool bit around the ring such that the channel has a cross-sectional area that varies around a circumference of the ring.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: October 27, 2009
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Bhawan B. Patel, Jason Fish, Dany Gaudet, Lafleche Gagnon
  • Internal fuel manifold and fuel inlet connection
    Patent number: 7743612
    Abstract: An internal fuel manifold assembly for a gas turbine engine comprises a fuel manifold ring and a fuel inlet assembly fastened thereto. The fuel inlet assembly providing fluid flow communication with the fuel manifold ring and being joined to the fuel manifold ring at an inlet region thereon. The inlet region of the fuel manifold ring is reinforced relative to the remainder of the circumference of the fuel manifold ring.
    Type: Grant
    Filed: September 22, 2006
    Date of Patent: June 29, 2010
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Oleg Morenko
  • Heat shield for a fuel manifold
    Patent number: 7926286
    Abstract: A fuel injection system for a gas turbine engine having a manifold ring, a plurality of spray tip assemblies and a heat shield including at least two heat shield segments cooperating to at least substantially surround a cross-section of the manifold ring around a circumference of the manifold ring, and detachably retained around the manifold ring through a plurality of removable fasteners.
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: April 19, 2011
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Oleg Morenko, Bhawan B. Patel, Nagaraja Rudrapatna, Saeid Oskooei
  • Internal fuel manifold with airblast nozzles
    Patent number: 7533531
    Abstract: A gas turbine engine internal fuel manifold assembly including an annular fuel distribution member defining at least one fuel flow passage therein, and a plurality of fuel nozzles having spray tips mounted to the fuel distribution member. the spray tips are in fuel flow communication with the fuel flow passage, and each fuel nozzle has at least one core airflow passage extending through a center thereof between the spray tip and an air inlet defined in the fuel nozzle.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: May 19, 2009
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Lev Alexander Prociw, Aleksandar Kojovic, Harris Shafique