Brush Seal Patents (Class 277/355)
  • Patent number: 10100655
    Abstract: The invention relates to a brush seal, in particular for the sealing of gaps occurring in turbomachines, including a plurality of individual fibers, individual wires or bundles of individual fibers or wires, wherein, in each case, at least two individual fibers or wires, and/or at least two fiber bundles or wire bundles are braided or twisted into a fiber or wire package. In addition, the invention relates to a method for producing a brush seal.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: October 16, 2018
    Assignee: MTU AERO ENGINES AG
    Inventors: Christoph Cernay, Stephan Prostler, Wolfgang Schmidmayr, Julian Weber, Benjamin Grobkurth, Stefan Beichl
  • Patent number: 10060533
    Abstract: The present disclosure relates to sealing systems for gas turbine engines. In one embodiment, a seal support structure for a gas turbine engine includes a seal support configured to retain a circumferential seal and an engine support configured for mounting the seal support structure to a gas turbine engine mount. The engine support includes at least one channel configured to provide radial movement of the seal support structure and circumferential retention of the seal support. Another embodiment is directed to a sealing system including a circumferential seal and seal support structure configured to provide radial movement.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 28, 2018
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Darren M. Smith
  • Patent number: 10047619
    Abstract: A seal configuration (100) for a turbo machine having a rotor (5), wherein the seal configuration (100) has a sealing element (300) to create a seal with respect to the rotor (5) in an installed position and a supporting device (200). The supporting device (200) has, in at least one section of the supporting device, a material (9) that melts when it comes into contact with the rotating rotor (5) in the installed position. A turbo machine having a seal configuration (100) is also provided.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: August 14, 2018
    Assignee: MTU Aero Engines AG
    Inventors: Andre Werner, Stephan Klaen, Manuel Hertter, Frank Stiehler
  • Patent number: 10041416
    Abstract: A system for providing a seal between a combustor and a turbine vane. The system includes a flange configured to extend radially from the combustor, and a seal. The flange includes a flange surface configured to face in an axial direction toward a surface of the vane. The seal is configured to be axially loaded between the flange surface and the surface of the vane.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: August 7, 2018
    Assignee: United Technologies Corporation
    Inventors: Kevin Joseph Low, Joey Wong
  • Patent number: 10024434
    Abstract: A rotary machine (100) includes a rotor (5) that rotates about an axis, a seal housing (30) that is disposed so as to face an outer peripheral surface of the rotor (5), and a seal body (10) that includes a plurality of thin plates (20) extending inward from the seal housing (30) in a radial direction and laminated in a circumferential direction. One thin plate (20) of the plurality of thin plates (20) has a shape in which the thin plate comes into contact with the other thin plates (20) provided on front and rear sides in a rotational direction in a state in which the thin plate does not come into contact with the rotor (5).
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: July 17, 2018
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kohei Ozaki, Hidekazu Uehara, Shin Nishimoto
  • Patent number: 9995395
    Abstract: A brush seal includes a bristle part formed by multiple bristles attached to a stationary part between the stationary part and a rotational part that undergo relative motion by maintaining a space in between and a back plate to restrict the movement of the bristle part. Such brush seal for sealing a fluid between the stationary part and the rotational part includes the bristle part formed by the multiple bristles such that the multiple bristles arranged in a direction of pressure difference between the high-pressure side and the low-pressure side are mutually fixed between a base end and a free end to form planar bristles, and these planar bristles are arranged continuously in layers in a circumferential direction to form a circular bristle part, wherein circumferential grooves are formed on the sliding surface of the bristle part on its free end side.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: June 12, 2018
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Hideyuki Inoue
  • Patent number: 9995163
    Abstract: A seal sub-assembly may comprise a spacer, at least one secondary seal, and a secondary seal cover. At least a portion of the at least one secondary seal are located axially between the spacer and the secondary seal cover. The spacer is attached to the secondary seal cover. The spacer may comprise a first flange and a second flange. The at least one secondary seal may be located axially in line with and radially inward from the first flange. At least a portion of the secondary seal cover may be located axially in line with and radially inward from the second flange.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: June 12, 2018
    Assignee: United Technologies Corporation
    Inventors: Conway Chuong, Ross Wilson, Joey Wong, Christpher J. Peters
  • Patent number: 9982551
    Abstract: A system for sealing an oil chamber from an adjoining exterior volume, and a turbo-machine including a sealing system. The system for sealing the oil chamber from the adjoining exterior volume, both of which are delimited by a mobile rotor in rotation about an axis and a part, fixed or mobile, includes: a first seal arranged between the rotor and the part; a second seal that is mounted between the rotor and the part and which is offset longitudinally relative to the first seal, to form with the first seal a sealing chamber delimited by the rotor, the part, and the two seals; and a mechanism for supplying gas to the sealing chamber, such that the gas can be compressed when the rotor begins to rotate, the chamber communicating with the oil chamber and/or the adjoining exterior volume via the first and second seals alone, respectively.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: May 29, 2018
    Assignee: SNECMA
    Inventors: Dominik Igel, Delphine Leroux
  • Patent number: 9951871
    Abstract: A brush seal assembly may seal a gap between a diaphragm and a rotor of a turbine. The brush seal assembly includes a brush, one end of which is inserted in a rotor facing surface of a diaphragm while the other end thereof protrudes toward a rotor, and a support strip spaced apart from one side of the brush so that one side end portion of the support strip is fixed and the other side end portion thereof supports one side of the brush.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: April 24, 2018
    Assignee: DOOSAN Heavy Industries Construction CO., LTD.
    Inventors: Mahmut Faruk Aksit, Dan Hasnedl
  • Patent number: 9938845
    Abstract: A turbomachinery component of a gas turbine engine is disclosed having a number of techniques of reducing the effects of a gap flow between an airfoil member of the gas turbine engine and a wall of the gas turbine engine. The airfoil member can be variable and in one form is a variable turbine vane. In one embodiment a brush seal is included between the vane and the wall. In another form a wear surface is disposed between the vane and the wall. In yet another form a moveable member capable of being actuated to change position can be disposed between the vane and the wall to alter the size of a gap between the two.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: April 10, 2018
    Assignees: Rolls-Royce Corporation, Rolls-Royce North American Technologies Inc.
    Inventors: Linnea Taketa, John Munson, Ted J. Freeman
  • Patent number: 9926800
    Abstract: A seal includes a housing having a back plate and a front plate. A supporting bristle layer is disposed adjacent to the back plate, and bristles in the supporting bristle layer have a first diameter. A sealing bristle layer is disposed adjacent to the supporting bristle layer, and bristles in the sealing bristle layer have a second diameter. A shielding/protecting bristle layer is disposed adjacent to the sealing bristle layer, and bristles in the shielding/protecting bristle layer have a third diameter. The second diameter is smaller than both the first diameter and the third diameter.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: March 27, 2018
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Bernard Arthur Couture, Jr., Michael John Bowman, William Edward Adis, Michael Dennis Mack, Kim James Clark
  • Patent number: 9920838
    Abstract: A brush seal for a gas turbine, in particular an aircraft engine, is disclosed. The brush seal includes a support ring which has a support plate and a support structure, where the support structure is arranged downstream with respect to the support plate. The brush seal also includes bristles which are arranged upstream with respect to the support ring, where ends of the bristles protrude radially inward beyond the support plate. The support structure yields when a scraping force acting radially outward occurs on a first lateral surface of the support structure, where the first lateral surface is directed radially inward, and the support structure does not yield when an axial operating force occurs on a second lateral surface of the support structure.
    Type: Grant
    Filed: July 2, 2015
    Date of Patent: March 20, 2018
    Assignee: MTU Aero Engines AG
    Inventors: Stephan Klaen, Julian Weber, Frank Stiehler, Christoph Cernay, Thomas Hess
  • Patent number: 9915351
    Abstract: This invention relates to a seal for sealing between a stator and rotor, including a generally annular carrier, an array of adjacent leaves mounted in the annular carrier for sealing between the stator and the rotor with their panes lying parallel to the axis of the carrier and front and back plates disposed on respective axial sides of the leaves, characterized in the front and back plates have one or more apertures dimensioned for providing a substantially symmetric pressure drop across the leaves.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: March 13, 2018
    Assignee: CROSS MANUFACTURING COMPANY (1938) LIMITED
    Inventors: Aaron Bowsher, Peter Francis Crudgington
  • Patent number: 9903476
    Abstract: A rotational shaft seal member which does not cause leakage of powder and which has a slit capable of being enlarged as a result of occurrence of springback. Cylindrical shaft seal member 4b at powder container 1 includes pile 5 including woven/knit pile fabric 7 having cut pile 7b at the inside of cylindrical shaft seal member 4b and pile cylindrical support member 4c; the outside diameter 4e being capable of shrinkage as a result of external pressure, and being capable of enlargement as a result of pressure on the inside diameter 4d. When cylindrical shaft seal member 4b is inserted in attachment hole 2a of support frame 2 at the rotating body, attachment is achieved because slit 8 causes shrinkage of outside diameter 4e of cylindrical shaft seal member 4b, enlargement due to springback of slit 8 causing intimate contact with attachment hole 2a.
    Type: Grant
    Filed: December 25, 2012
    Date of Patent: February 27, 2018
    Assignees: SANWA TECHNO CO., LTD.
    Inventors: Susumu Shoji, Kazuro Fukui
  • Patent number: 9897212
    Abstract: An assembly forming a seal for a turbine engine, comprising a brush seal formed by a plurality of sealing bristles surrounding a core, a retaining cap comprising a portion at least partially housing the brush seal, and a support cover placed in contact with the brush seal in order to hold it in position against the retaining cap, the brush seal being situated between the retaining cap and the support cover. The support cover comprises a structure for lubricating the bristles of the brush seal, comprising an opening for collecting lubricating oil, a lubricating oil distribution groove connected to the opening, and at least one channel for flow of lubricating oil towards the bristles of the brush seal, connected to the groove.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: February 20, 2018
    Assignee: SNECMA
    Inventors: Romain Lagarde, Jean François Comin, René Serge Morreale
  • Patent number: 9879557
    Abstract: A turbine section of a gas turbine engine includes a seal that extends between a vane platform and a Blade Outer Air Seal.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: January 30, 2018
    Assignee: United Technologies Corporation
    Inventors: Theodore W Hall, Michael G McCaffrey, Zachary Mott
  • Patent number: 9863538
    Abstract: As assembly is provided for a gas turbine engine. This assembly includes a component and a brush seal. The component includes a first surface and a second surface. The brush seal includes an annular bundle of bristles which extends longitudinally along an axis to a bundle tip. The bundle of bristles axially contacts the first surface at the bundle tip. The bundle of bristles proximate the bundle tip axially overlaps the second surface, and the bundle of bristles is operable to radially contact the second surface.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: January 9, 2018
    Assignee: United Technologies Corporation
    Inventor: Brian Duguay
  • Patent number: 9845884
    Abstract: Aspects of the disclosure are directed to a brush seal comprising: a bristle pack that includes: a first plurality of bristles, each of the first plurality of bristles having a first dimension, and a second plurality of bristles, each of the second plurality of bristles having a second dimension that is different from the first dimension, where a ratio of the first dimension to the second dimension has a range of 2:1 to 5:1.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: December 19, 2017
    Assignee: United Technologies Corporation
    Inventors: Paul M. Lutjen, Jose R. Paulino
  • Patent number: 9841104
    Abstract: Provided is a shaft sealing apparatus, which includes a seal ring that is installed in an annular space between a rotor and a stator surrounding an outer circumference side of the rotor, that is formed in a divided structure from a movable seal ring and a stationary seal ring whose circumferential ends are adjacent to each other, and that is configured so that the movable seal ring is biased toward a radial outer side thereof by an elastic body, a seal body that is formed by stacking a plurality of thin seal pieces, which extend from the seal ring toward a radial inner side of the rotor, in a circumferential direction of the rotor, and a communicating part that causes the low-pressure side region and the high-pressure side region to communicate with each other.
    Type: Grant
    Filed: January 31, 2013
    Date of Patent: December 12, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hidekazu Uehara, Tanehiro Shinohara, Shin Nishimoto, Takashi Nakano
  • Patent number: 9835253
    Abstract: A brush seal assembly may include: a packing body configured to be positioned between a rotating body and a fixing body and provided with an insertion groove; a brush seal part configured to include a brush extending toward the rotating body in a state in which one end of the brush seal part is inserted into the insertion groove and a support member supporting the brush; a thermal expansion member configured to adhere to a side of the support member and be thermally expanded in a circumferential direction of the packing body; and a fixing member configured to be fitted in the insertion groove to face the thermal expansion member to simultaneously fix the brush seal part in the circumferential direction and a radial direction of the packing body.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: December 5, 2017
    Assignee: DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD.
    Inventor: Mahmut Faruk Aksit
  • Patent number: 9829106
    Abstract: A sealing arrangement for sealing between adjacent first and second exit frames each associated with a transition piece of a turbine. The arrangement includes a transition side seal having bristles that extend from a rail wherein the rail is bendable in a plurality of directions to accommodate bowing of an associated exit frame. The first exit frame includes a rail slot for receiving the rail. The second exit frame includes a bristle slot for receiving the bristles to form a seal between the first and second exit frames, wherein the bristle slot includes a bottom section. The bristles are separated from the bottom section by a bristle gap that is sized to accommodate movement of at least one transition piece to maintain a seal between the first and second exit frames or avoid damage to the bristles.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: November 28, 2017
    Assignee: SIEMENS ENERGY, INC.
    Inventors: Richard L. Thackway, Charalambos Polyzopoulos, James M. Hurney
  • Patent number: 9777588
    Abstract: A brush seal system for sealing a gap between components of a thermal gas turbine that may be moved relative to one another includes a gas seal housing that receives at least one brush head of a brush seal and a support element by means of which a brush packet projecting from the brush head of the brush seal may be supported against flexing. The support element and the brush seal housing are embodied as separate components. The invention furthermore relates to a method for producing such a brush seal system and to a thermal gas turbine having such a brush seal system.
    Type: Grant
    Filed: October 7, 2014
    Date of Patent: October 3, 2017
    Assignee: MTU AERO ENGINES AG
    Inventors: Stephan Klan, Frank Stiehler, Julian Weber, Markus Schlemmer, Stephan Prostler
  • Patent number: 9759077
    Abstract: A sealing system and method is disclosed. The sealing system includes a brush sealing element and an accommodating element with an accommodating chamber. The brush sealing element is disposed in the accommodating chamber and a bendable strap is disposed on the accommodating element. The method includes fastening the brush sealing element in the accommodating chamber of the accommodating element. The accommodating element is arranged in a groove of a housing segment and a position of the accommodating element is secured on the housing element by bending the strap of the accommodating element to engage with a side wall of the housing segment.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: September 12, 2017
    Assignee: MTU Aero Engines GmbH
    Inventors: Stefan Beichl, Erhan Uecguel
  • Patent number: 9759329
    Abstract: It comprises a first member with a plate attached and substantially covering at least one portion of a second member (20), both members being rotatable relative to each other and defining a tortuous way, and it further comprises a brush sealing attached to the first member and resting on a siding plate in the second member such that an inner gap formed between said first and second members is sealed. A flexible member may be provided between the brush sealing and the first member for joining them in a flexible way.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: September 12, 2017
    Assignee: ALSTOM Renewable Technologies
    Inventors: Sebastian Valero Lafuente, Jesús Lorita, Javier Bescos
  • Patent number: 9752448
    Abstract: A brush seal includes a bristle part formed by multiple bristles such that the multiple bristles arranged in a direction of pressure difference between a high-pressure side and a low-pressure side are mutually fixed between a base end and a free end to form planar bristles, wherein these planar bristles are arranged continuously in layers in a circumferential direction to form a circular bristle part. Multiple dynamic-pressure generating grooves that generate dynamic pressure by turning and sliding relative to a rotational part are formed independently in the circumferential direction, on the sliding surface of the bristle part on the free end side, in a manner open to the high-pressure side.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: September 5, 2017
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Hideyuki Inoue
  • Patent number: 9702260
    Abstract: The present disclosure relates to an aircraft brush seal comprising a first brush seal member and a second brush seal member comprising a channel that receives a plurality of interwoven brush fibers. The interwoven brush fibers may be coupled to the first brush seal member and/or may extend into the second brush seal member. The interwoven brush fibers may not couple to the second brush seal member and/or may form an air seal. The air seal may be formed between a first air compartment and a second air compartment.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: July 11, 2017
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Gary A. Schirtzinger, George J. Kramer
  • Patent number: 9689497
    Abstract: The present invention is to provide a brush seal device capable of following displacement in a radial direction of a rotational shaft appropriately. The brush seal device prevents leakage of process fluid, wear of a brush seal etc., and leakage of process fluid from an outer circumferential side. The brush seal device 100 of the present invention integrally includes an inner circumferential brush seal 120 and an outer circumferential brush seal 140. The inner circumferential brush seal 120 has a brush portion 123 and an inner-circumferential-side free end portion 125 at the inner circumferential side. The outer circumferential brush seal 140 has a brush portion 143 and an outer-circumferential-side free end portion 145 at the outer circumferential side.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: June 27, 2017
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Hideyuki Inoue
  • Patent number: 9677669
    Abstract: Disclosed is a shaft seal device comprising: a seal body made by layering a plurality of thin-plate seal pieces in the circumferential direction of the rotor, and a housing that is fixed to the stator, holds the seal body so as to surround the same from radially outside, and includes a first facing surface that faces the high-pressure-side edge of the seal body and a second facing surface that faces the low-pressure-side edge of the seal body. The high-pressure-side clearance between the seal body and the first facing surface is smaller than the low-pressure-side clearance between the seal body and the second facing surface, and a slope part that slopes gradually toward the high-pressure side toward the tip end, which is on the rotor side, is formed in the low-pressure-side edge of each thin-plate seal piece of the seal body.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: June 13, 2017
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Hidekazu Uehara, Shin Nishimoto, Tanehiro Shinohara, Hiroharu Oyama
  • Patent number: 9677410
    Abstract: A shaft sealing device and a rotary machine equipped therewith are provided with a sealing body configured by stacking a plurality of thin sealing pieces; and a low-pressure-side side sealing plate in which a plate surface facing the low-pressure side is pressed against an inner wall surface of the housing facing the direction of the axis by means of the pressure of a fluid applied from a high-pressure side to the low-pressure side. A protrusion for blocking a downward flow toward the inside of the low-pressure-side side sealing plate in the radial direction along the low-pressure side of the sealing body is formed on the inside of the low-pressure-side side sealing plate in the radial direction, and a communication path for guiding the downward flow blocked by means of the protrusion to a low-pressure-side region is formed on the housing.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: June 13, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tanehiro Shinohara, Hidekazu Uehara, Shin Nishimoto, Takashi Nakano
  • Patent number: 9664067
    Abstract: A seal retaining assembly includes a first segment coupled to a first structure. Also included is a recess of the first segment, the recess defined by a first and second wall, the first wall defining a first wall aperture, the second wall defining a second wall aperture. Further included is a second segment having a tab disposed within the recess in fitted contact with the first and second wall to retain the second segment to the first segment in a radial direction, the tab defining a tab aperture, the first and second segment defining an axial gap therebetween, the first wall aperture, the second wall aperture and the tab aperture are aligned to form a passage. Yet further included is a flex seal within the axial gap. Also included is a pin in the passage to fix the second segment to the first segment in axial and circumferential directions.
    Type: Grant
    Filed: October 10, 2014
    Date of Patent: May 30, 2017
    Assignee: General Electric Company
    Inventors: Karol Filip Leszczynski, Christopher Warren Childs, David Matthew Clarida, Gregory Allan Crum, Mitchel Merck, Alexander Maxim Libers
  • Patent number: 9651086
    Abstract: A bearing assembly for a rotating shaft, with brush rings on both sides of the bearing mechanism for damping bearing motion. In a foil gas bearing embodiment, the bearing itself comprises a hollow sleeve, a compliant layer, and a top foil layer. These bearing elements are arranged in a conventional manner except that the top foil layer extends beyond the sleeve. A sleeve extension extends over the extended portion of the top foil layer. Two opposing brush rings, an inner brush ring and an outer brush ring, are attached to the top foil layer extension and the sleeve extension, respectively. The bristles of an inner brush ring and the bristles of an outer brush ring are interposed and provide damping during operation of the bearing.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: May 16, 2017
    Assignee: SOUTHWEST RESEARCH INSTITUTE
    Inventor: Aaron M Rimpel
  • Patent number: 9593585
    Abstract: A seal assembly for sealing a circumferential leakage gap between outlet portions of first and second adjacent transition ducts in a gas turbine engine includes a first seal member affixed to the outlet portion of the first transition duct and a second seal member movable with respect to the first seal member. The second seal member is positionable in a non-sealing first position and a sealing second position. While in the first position, the second seal member is circumferentially spaced from the outlet portion of the second transition duct. While in the second position, the second seal member extends across the leakage gap and creates a seal with the outlet portion of the second transition duct to substantially prevent leakage through the leakage gap.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: March 14, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Andrew G. Green, Miguel Bascones
  • Patent number: 9593588
    Abstract: An inner wall surface of a low-pressure-side side plate opposite to a lateral surface of a thin plate is formed along a direction crossing an axial direction of a rotating shaft such that a gap between the inner wall surface and the thin plate gradually decreases from a radially inner side toward a radially outer side of the low-pressure-side side plate.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: March 14, 2017
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hitoshi Morimoto, Keizo Tsukagoshi, Junichiro Masada, Tatsuji Takahashi, Masato Araki, Tanehiro Shinohara, Hidekazu Uehara
  • Patent number: 9587746
    Abstract: A seal assembly for a rotary machine is provided. The seal assembly includes multiple sealing device segments disposed circumferentially intermediate to a stationary housing and a rotor. Each of the segments includes a shoe plate with a forward-shoe section and an aft-shoe section having one or more labyrinth teeth therebetween facing the rotor. The sealing device includes a stator interface element having a groove or slot for allowing disposal of a spline seal for preventing segment leakages. The sealing device segment also includes multiple bellow springs or flexures connected to the shoe plate and to the stator interface element. Further, the sealing device segments include a secondary seal integrated with the stator interface element at one end and positioned about the multiple bellow springs or flexures and the shoe plate at the other end.
    Type: Grant
    Filed: July 31, 2012
    Date of Patent: March 7, 2017
    Assignee: General Electric Company
    Inventors: Rahul Anil Bidkar, Neelesh Nandkumar Sarawate, Christopher Edward Wolfe, Eric John Ruggiero, Vivek Raja Raj Mohan
  • Patent number: 9525327
    Abstract: The current diverter rings and bearing isolators serve to dissipate an electrical charge from a rotating piece of equipment to ground, such as from a motor shaft to a motor housing. One embodiment of the current diverter ring includes an inner body and an outer body configured to clamp at least one conductive segment between them. In the preferred embodiments of the current diverter ring, the conductive segments are positioned in radial channels. The outer body may be affixed to a shaft, a motor housing, a bearing isolator, or other structure. The bearing isolator may incorporate a retention chamber for holding conductive segments within the stator of the bearing isolator, or the bearing isolator may be fashioned with a receptor groove into which a current diverter ring may be mounted.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: December 20, 2016
    Assignee: Inpro/Seal, LLC
    Inventors: David C. Orlowski, Neil F. Hoehle, Robert A. Tejano, Shawn Horton
  • Patent number: 9506566
    Abstract: Embodiments of a gas turbine engine including a finger-foil seal are provided, as are embodiments of a finger-foil seal. In one embodiment, the finger-foil seal includes an aerodynamic foil having a generally annular body through which a first opening is formed. A finger seal retention structure is disposed around the aerodynamic foil. A finger seal backing spring is coupled to the finger seal retention structure and extends radially inward therefrom to contact an outer circumference of the aerodynamic foil. A first anti-rotation pin extends radially from the finger seal retention structure and into the first opening formed in the aerodynamic foil to inhibit rotation of the aerodynamic foil during operation of the finger-foil seal.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: November 29, 2016
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Marshall Saville, Keith Alan Hurley, Joseph Yanof, Tina Hynes, David Waldman
  • Patent number: 9500094
    Abstract: A floating brush seal in a rim cavity of a turbine in a gas turbine engine, where the floating brush seal includes a seal holder in which the floating brush seal floats, and a expandable seal that fits within two radial extending seal slots that maintains a seal with radial displacement of the floating brush seal and the seal holder.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: November 22, 2016
    Assignee: S & J DEISGN, LLC
    Inventors: Darryl S Eng, Todd A Ebert
  • Patent number: 9435216
    Abstract: A sealing arrangement (100) in an axial turbomachine between, on the one hand, a rotor (1) and, on the other hand, a stator (3) and/or a housing, including a support device (7, 7?) and a sealing element, whereby the support device (7, 7?) extends essentially in the radial direction (r). In the axial direction (u) of the turbomachine, the support device (7, 7?) has an axial contour that effectuates a stiffening effect for the support device (7, 7?).
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: September 6, 2016
    Assignee: MTU Aero Engines GmbH
    Inventor: Frank Stiehler
  • Patent number: 9347459
    Abstract: A sealing system for a centrifugal compressor includes a stator having a seal, a seal disposed in the seal housing and having an abradable portion along an inner circumference, a rotor having a plurality of rotor teeth configured to rotate within the inner circumference of the seal and configured to create rub grooves within the abradable portion, and a first spring disposed between the stator and the seal and configured to facilitate axial movement of the seal relative to the seal housing.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: May 24, 2016
    Assignee: Nuovo Pignone S.p.A.
    Inventors: Nuo Sheng, Roderick Mark Lusted, Vittorio Michelassi
  • Patent number: 9334747
    Abstract: The invention relates to an apparatus (10) for securing sealing elements (12, 14) in a recess (16), more particularly in an installation slot in a turbomachine, having at least one sealing support element (18) comprising at least one sealing element (12, 14). At least one fixing piece (20) is fitted between the sealing support element (18) and a clamping piece (22) associated with the sealing support element (18), and the fixing piece (20) is integrally joined to the sealing support element (18) and the clamping piece (22) by strut-like connections (24) that can be broken by the application of force. The invention also relates to a securing method and to a method for manufacturing the claimed apparatus (10).
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: May 10, 2016
    Assignee: MTU AERO ENGINES AG
    Inventors: Christoph Cernay, Wolfgang Schmidmayr, Thomas Hess, Julian Weber
  • Patent number: 9273782
    Abstract: A leaf seal for effecting a seal between two, coaxial, relatively rotating components. The leaf seal has an annular pack of stacked leaves. The pack is mountable to a first one of the components with interleaf gaps formed between working portions of neighbouring leaves. The leaves extend towards the other component such that end edges of leaf working portions are presented for wiping contact with the other component. At least adjacent its end leaf edge, each leaf has a rear section at or adjacent the low pressure side of the pack and a front section which extends from the rear section to the high pressure side of the pack. The rear sections of the leaves are thicker than their respective front sections to reduce the interleaf gaps at the rear sections such that most of the pressure drop across the pack is over the rear sections.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: March 1, 2016
    Assignee: ROLLS-ROYCE plc
    Inventors: Ingo Henry Johannes Jahn, Gervas Franceschini
  • Patent number: 9267602
    Abstract: A seal assembly between a rotor and a stator is disclosed. In one embodiment, the seal assembly includes: a rotor; a stator positioned around the rotor; and a plurality of seal leaves positioned between the rotor and the stator, the plurality of seal leaves circumferentially stacked around the rotor to define a seal ring between the rotor and the stator, wherein gaps between adjacent seal leaves are partially filled, such that contact faces and residual gaps are between adjacent seal leaves, wherein the contact faces generate friction to dampen vibrations during operation. Such damping effects still allow the compliant motion of the seal leaves with minimal leaf vibration. Also, thicker and more resilient leaves may be applied with reduced leakage through the root gaps.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: February 23, 2016
    Assignee: General Electric Company
    Inventors: Yuefeng Luo, William Edward Adis, Hrishikesh Vishvas Deo
  • Patent number: 9234592
    Abstract: The present invention is to provide a brush seal device capable of following displacement in a radial direction of a rotational shaft appropriately. The brush seal device prevents leakage of process fluid, wear of a brush seal etc., and leakage of process fluid from an outer circumferential side. The brush seal device 100 of the present invention includes an inner circumferential brush seal 120 and an outer circumferential brush seal 140. The inner circumferential brush seal 120 has a brush portion 123 and a free end portion 125 at the inner circumferential side. The outer circumferential brush seal 140 is placed at an outer circumferential side of the inner circumferential brush seal 120, and has a brush portion 143 and a free end portion 145 at the inner circumferential side.
    Type: Grant
    Filed: February 6, 2014
    Date of Patent: January 12, 2016
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Hideyuki Inoue
  • Patent number: 9206905
    Abstract: A leaf seal for effecting a seal between coaxials and relatively rotating components. The seal has annular pack of stacked leaves, the pack mountable to first one of components at leaves root portions and extending towards other component end edges of leaves presented for air-riding interaction with other component during relative rotation between components. In use, pressure drop is maintained axially across the pack, which includes first set of leaves arranged around the pack, each to present an end edge at least part in relationship with other component. The pack includes second set of leaves circumferentially interspersed throughout the first set. The first and second sets, leaves help define, around the pack, circumferential spaces between end edges of first set's successive leaves, the spaces create circumferential variation in pressure around the pack contributing to the generation of hydrodynamic lift between pack and other component during relative rotation between components.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: December 8, 2015
    Assignee: ROLLS-ROYCE PLC
    Inventor: Gervas Franceschini
  • Patent number: 9157531
    Abstract: The seal comprises a casing made of two portions (1, 2) crimped into one another with an accurate hermetic position adjustment at interfaces (15, 6b) and a composite structure comprising inside the casing an advantageously flexible and resilient core (24) and a winding (20) of brush bristles. This structure directly extends facing internal faces (9, 10) facing each other in the casing, which compresses the same and has an arcuate shape having a slightly higher radius of curvature. The composite structure is held at an accurate position, firmly but free of constraint.
    Type: Grant
    Filed: September 9, 2013
    Date of Patent: October 13, 2015
    Assignees: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES, TECHNETICS GROUP FRANCE SAS
    Inventors: Laurent Guimet, Frédéric Sauvinet, Olivier Constant, Philippe Reynaud, Christophe Mengelle, Michel Lefrancois
  • Patent number: 9121506
    Abstract: This application describes a leaf seal arrangement, including: a first component having a high pressure area and a low pressure area therein; a second component which passes from the high pressure area to the low pressure area; a leaf seal having an array of leaf elements between the high and low pressure areas, each leaf element having a fixed end and a free end, wherein the fixed end is attached to the first component and the free end defines a sealing surface through which the second component sealably passes, a sealing gap therebetween, and wherein the sealing gap generally converges from the high pressure area toward the lower pressure area. Also described is a method of providing a leaf seal.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: September 1, 2015
    Assignee: ROLLS-ROYCE PLC
    Inventor: Gervas Franceschini
  • Patent number: 9103223
    Abstract: A shaft sealing device is provided in an annular space between a rotor and a stator surrounding an outer periphery of the rotor, and divides the annular space in the direction of an axis of the rotor into a high-pressure region and a low-pressure region. The shaft sealing device includes a seal body obtained by stacking a plurality of thin plate sealing pieces in a circumferential direction of the rotor; and a high-pressure side plate that extends from the stator toward the radial inner side so as to run along the high-pressure side of the seal body, and is segmented into a plurality of portions in the circumferential direction, and includes a rigidity imparting member configured to impart rigidity in the direction of the axis to a portion of the surface of the high-pressure side plate that faces the high-pressure region.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: August 11, 2015
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Hidekazu Uehara, Tanehiro Shinohara, Yukihiro Hashimoto, Shin Nishimoto, Takashi Nakano, Masato Araki, Keita Takamura
  • Patent number: 9091348
    Abstract: A shaft sealing apparatus is installed in an annular space between a rotor and a stator in a rotating machine and divides the annular space into a low-pressure side region and a high-pressure side region in an axial direction of the rotor. The shaft sealing apparatus includes a seal body formed by stacking a plurality of thin seal pieces, which extend from the stator toward a radial inner side of the rotor, in a circumferential direction of the rotor, and lateral plates having a surface facing the axial direction and curved and extending in a circumferential direction of the annular space. The seal body is welded to the surfaces of the lateral plates which face the axial direction so that the seal body follows a curved shape of the lateral plates.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: July 28, 2015
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tanehiro Shinohara, Hidekazu Uehara, Shin Nishimoto, Hiroharu Oyama, Takashi Nakano
  • Patent number: 9068655
    Abstract: A quick change brush holder of a brush seal having a plurality of spaced apart deflectable brush retaining arrangements that include a tab that is bent into a brush receiving channel toward a brush engaging or retaining position to releasably retain a brush in the channel and that is bent away from the brush engaging or retaining position when it is desired to remove the brush or install a brush in the holder. Each tab has a brush abutment edge that abuts or stops a shoulder of a tape or spine of a brush in the channel preventing removal from the holder when disposed in a brush engaging or retaining position. The brush abutting edge extends generally parallel to the channel enabling a brush to be inserted transversely relative to a lengthwise extent of the holder tape or spine first into the holder.
    Type: Grant
    Filed: June 6, 2012
    Date of Patent: June 30, 2015
    Assignee: Sealeze, A Unit of Jason Inc.
    Inventors: Roger Ferryman, Patrick Fitzgerald, David Chrisman, Pavan Kumar Ravulaparthy
  • Patent number: 9057444
    Abstract: A leaf seal is provided for effecting a seal between two, coaxial, relatively rotating components. The leaf seal has an annular pack of stacked leaves. The pack is mountable to a first one of the components at root portions of the leaves and extends towards the other component such that end edges of the leaves are presented for wiping contact with the other component and, in use, a pressure drop is maintained axially across the pack. The leaf seal has a coverplate at the high or the low pressure side of the pack covering a portion of the radial extent of the pack. Some or all of the leaves have respective abutment formations. Each abutment formation is arranged to abut the coverplate at a stop portion upon radial deflection of the leaf by a predetermined amount to prevent further radial deflection beyond that amount.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: June 16, 2015
    Assignee: ROLLS-ROYCE plc
    Inventor: Ingo Henry Johannes Jahn