Brush Seal Patents (Class 277/355)
  • Patent number: 10533665
    Abstract: The invention is directed to a seal arrangement, in particular a brush seal, for a turbine, in particular an aircraft gas turbine, with a sealing element and with a sealing surface that interacts with the sealing element, wherein the sealing element and the sealing surface are arranged concentrically with respect to each other, in particular concentrically around a machine axis of the turbine is hereby characterized in that the sealing element and the sealing surface are designed in such a way that, in a first operating state, a gap is formed between them, and in that, in a second operating state, a sealing contact is produced between the sealing element and the sealing surface.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: January 14, 2020
    Assignee: MTU Aero Engines AG
    Inventor: Alexander Kloetzer
  • Patent number: 10519793
    Abstract: An aircraft turbojet low-pressure compressor includes a sealing device for a turbine engine. The device includes an internal stator shroud connected to an external casing via an annular row of stator vanes and a rotor with two brush seals arranged inside the shroud and respectively upstream and downstream. The internal shroud includes a frustoconial internal surface, which is associated with each brush seal. Each frustoconical surface lies flush with and is inclined with respect to the bristles of the brush seal, so as to seal with the said brush. A method for assembling a sealing device is also proposed.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: December 31, 2019
    Assignee: SAFRAN AERO BOOSTERS SA
    Inventors: Stéphane Hiernaux, Nicolas Habotte
  • Patent number: 10519791
    Abstract: A shaft sealing device includes a plurality of leaves that is arranged in a periphery of a rotating shaft and divides a space around the rotating shaft into two spaces in an axial direction of the rotating shaft, and a side seal plate that is arranged on one side of the plurality of leaves in the axial direction of the rotating shaft and has an opposite surface facing a side end on one side of the plurality of leaves. The side seal plate has a friction reducing portion for reducing a friction force between the opposite surface of the side seal plate and a surface of the side end on the one side of the plurality of leaves.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: December 31, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Azumi Yoshida, Hidekazu Uehara, Kohei Ozaki, Shin Nishimoto
  • Patent number: 10519807
    Abstract: Turbine assemblies for a turbine of a gas turbine engine are disclosed herein. The turbine assemblies include a carrier and a blade track. The blade track extends around blades of a turbine wheel assembly to block gasses passed along a gas path from moving over the blades without causing the blades to rotate during operation of the turbine assembly. The blade track includes a plurality of blade track segments arranged circumferentially adjacent to one another about a central axis to form a ring. A retention ring engages both the carrier and the blade track segments to facilitate coupling and sealing.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: December 31, 2019
    Assignees: Rolls-Royce Corporation, Rolls-Royce North American Technologies Inc., Rolls-Royce High Temperature Composites Inc.
    Inventors: Brian J. Shoemaker, Joseph P. Lamusga, Ted J. Freeman
  • Patent number: 10520016
    Abstract: Improved bearing roller elements are disclosed. Vanes are added to a ring-roller type element which allow fluids to flow through a bearing assembly in a controlled manner. The fluids can then provide convection cooling. The vaned ring-roller elements allow the creation of a pump, either as part of the bearing assembly's cooling system or as a dedicated device. The use of magnetic spokes in ring-roller type elements which can be used with or without the vanes which allows them to be driven by an electromagnetic field is also disclosed, as is the use of such magnetic elements in the bearing roller elements to allow electromagnetic braking and/or regenerative braking. A bearing assembly incorporating the roller elements in a ring configuration and using pre-load to produce additional benefits is also disclosed.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: December 31, 2019
    Assignee: Taurus Technologies Group, Inc.
    Inventors: Stefan Magnusson, Marta Magnusson, Maxine Magnusson
  • Patent number: 10502322
    Abstract: Provided is a split type brush seal device, brush seal pieces, and a method of assembling a split type brush seal device in which the brush seal pieces can be applied to an attached portion having an acceptable curvature. The split type brush seal device includes plural brush seal pieces having bundled wire rods, and attached members in which the plural brush seal pieces are attached to attached portions in the circumferential direction. Each of the brush seal pieces has a plate of arc shape to which the bundled wire rods are fixed. The split type brush seal device further includes a biasing member that forcibly cause a curvature of the plate to approximate to a curvature of the attached portion.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: December 10, 2019
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventors: Toru Kono, Ryu Kikuchi, Norihiko Saito
  • Patent number: 10465546
    Abstract: A seal system may comprise a seal cavity defined, at least partially, by a first axial surface and a second axial surface. The second axial surface may be recessed with respect to the first axial surface. A brush seal may be disposed in the seal cavity. The brush seal may comprise a first bristle pack and a backing plate coupled to the first bristle pack. A first group of bristles of the first bristle pack may be radially inward of the first axial surface.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: November 5, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventors: Mark J. Rogers, Timothy M. Davis
  • Patent number: 10443735
    Abstract: A brush seal having an annular shape, includes: a low-pressure-side plate including a low-pressure-side recessed portion radially recessed and circumferentially extending; a high-pressure-side plate including a high-pressure-side recessed portion positioned to face the low-pressure-side recessed portion, the high-pressure-side recessed portion being radially recessed and circumferentially extending; a brush body including a plurality of wire rods and supported between the low-pressure-side plate and the high-pressure-side plate; and a fixing member inserted into a space formed by the low-pressure-side recessed portion and the high-pressure-side recessed portion.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: October 15, 2019
    Assignee: EAGLE INDUSTRY CO., LTD.
    Inventor: Toru Kono
  • Patent number: 10415413
    Abstract: A seal assembly includes an annular base, a spring, a shoe, a first channel, a seal cover, and a seal. The spring includes a beam and is connected to the annular base. The shoe is disposed radially inward of the annular base and connected to the spring. The shoe includes an upstream portion, a downstream portion, and a lip connected to and extending radially outward from the upstream portion of the shoe. The spring extends from the annular base to the shoe. The first channel is positioned between the shoe and the beam of the spring. The seal is disposed between the seal cover and the shoe such that a downstream face of the seal is in contact with an upstream face of the shoe.
    Type: Grant
    Filed: September 1, 2016
    Date of Patent: September 17, 2019
    Assignee: United Technologies Corporation
    Inventors: Conway Chuong, Joey Wong, Ross Wilson, Christopher J. Peters
  • Patent number: 10400896
    Abstract: A dual-ended brush seal assembly that may be for turbine engine includes a first structure having a first surface and a second structure having a second surface. A brush seal of the assembly includes a bent bristle pack having a first end in sealing contact with the first surface and an opposite second end in sealing contact with the second surface. The first and second ends project in respective first and second directions that generally traverse one-another.
    Type: Grant
    Filed: August 26, 2015
    Date of Patent: September 3, 2019
    Assignee: United Technologies Corporation
    Inventor: Timothy M. Davis
  • Patent number: 10393270
    Abstract: A brush seal includes a bristle pack disposed between a top plate and a back plate. A sliding backing plate is disposed between the bristle pack and the back plate. The bristle pack includes a first bristle set that extends across a seal gap between a first engine component and a second engine component to prevent leakage across the seal gap and a second bristle set that exerts a force on the sliding backing plate. The sliding backing plate supports at least a portion of the first bristles and extends across the seal cavity to contact the second component. The force exerted on the sliding backing plate drives the sliding backing plate into contact with the second component.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: August 27, 2019
    Assignee: United Technologies Corporation
    Inventors: Timothy M Davis, Jose R. Paulino, Mark J. Rogers
  • Patent number: 10330117
    Abstract: The main object of the invention is an angular stator sector (10) for a turbomachine compressor, comprising an outer shroud and an inner shroud (S) arranged coaxially one inside the other, and at least one vane (P) extending radially between the outer shroud and the inner shroud (S) and connected to the latter by its radial ends, characterized in that the inner shroud (S) comprises at least one brush seal (1, 2, 3) forming an obstacle to the recirculation of the downstream gases upstream of the inner shroud (S).
    Type: Grant
    Filed: September 5, 2014
    Date of Patent: June 25, 2019
    Assignee: SAFRAN AIRCRAFT ENGINES
    Inventors: Damien Joseph Cellier, Mickael Dias Gomes, Antoine Robert Alain Brunet, Daniel Georges Plona
  • Patent number: 10309538
    Abstract: A device for attaching seal elements in a recess, particularly in an installation groove designed in a flow machine, is disclosed. At least one fixing body is arranged between a seal carrier element and a clamping body assigned to the seal carrier element, where the fixing body is integrally connected to the seal carrier element and the clamping body by bar-like connections that can be detached when subjected to a force. In addition, at least one plastic deformable structure is designed on the fixing body. An attachment method as well as a production method for the device is also disclosed.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: June 4, 2019
    Assignee: MTU Aero Engines AG
    Inventor: Julian Weber
  • Patent number: 10280799
    Abstract: A seal assembly for a gas turbine engine according to an example of the present disclosure includes, among other things, a seal arc segment that has a sealing portion and a first interface portion. The first interface portion defines circumferential mate faces. A support includes a mounting portion and a second interface portion. The mounting portion is configured to be fixedly attached to an engine static structure, and the second interface portion is radially inward of the first interface portion. At least one positioning member is dimensioned to abut the first and second interface portions such that the first and second interface portions are spaced apart by a predetermined distance in a radial direction.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: May 7, 2019
    Assignee: UNITED TECHNOLOGIES CORPORATION
    Inventor: Timothy M. Davis
  • Patent number: 10233764
    Abstract: A vane assembly for a gas turbine engine is disclosed in this paper. The vane assembly includes an inner platform, an outer platform, and a ceramic-containing airfoil. The ceramic-containing airfoil extends from the inner platform to the outer platform. A clamp mechanism couples the inner platform and the outer platform to the ceramic-containing airfoil.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: March 19, 2019
    Assignees: Rolls-Royce North American Technologies Inc., Rolls-Royce Corporation
    Inventors: David J. Thomas, Richard C. Uskert, Thomas D. Nixon
  • Patent number: 10208674
    Abstract: A seal assembly, includes a first brush supported between first and second plates, a second brush supported on the first and second plates transverse to the first brush seal, and a third plate attached to the second brush.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: February 19, 2019
    Assignee: United Technologies Corporation
    Inventor: Paul M. Lutjen
  • Patent number: 10196987
    Abstract: A shaft sealing mechanism (11) that partitions an annular space (14) that is formed between a fixed part (12) and a rotating shaft (13) into a high-pressure-side region and a low-pressure-side region, that obstructs the flow of a fluid (G), and that is provided with: a plurality of annularly laminated thin-plate seal pieces (22) that are fixed to an annular seal housing (21) that is provided to the fixed part and are in sliding contact with the rotating shaft; and an annular low-pressure-side plate (26) that is sandwiched and held such that a low-pressure-side gap (?L) is formed between the seal housing and a low-pressure-side side edge part (22d) of the thin-plate seal pieces. The thin-plate seal pieces have pressure-conduction holes (31) that are formed further to the inside in the radial direction of the rotating shaft than an inner-circumferential-side tip part (26a) of the low-pressure-side plate.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: February 5, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Kohei Ozaki, Hidekazu Uehara, Azumi Yoshida, Hiroharu Oyama
  • Patent number: 10190432
    Abstract: A brush seal assembly is operable to seal a gap between a diaphragm and a rotor of a turbine. A brush seal assembly includes: a brush configured to have one end inserted into one side of a diaphragm and the other end protruding toward a rotor; a support strip configured to support one side of the brush; and a back plate configured to support one side of the support strip.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: January 29, 2019
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventor: Mahmut Faruk Aksit
  • Patent number: 10190433
    Abstract: A shaft sealing mechanism (11) that partitions an annular space (14) that is formed between a fixed part (12) and a rotating shaft (13) into a high-pressure-side region and a low-pressure-side region, that obstructs the flow of a fluid (G), and that is provided with: a plurality of annularly laminated thin-plate seal pieces (22) that are fixed to an annular seal housing (21) that is provided to the fixed part and are in sliding contact with the rotating shaft; and an annular low-pressure-side plate (26) that is sandwiched and held such that a low-pressure-side gap (?L) is formed between the seal housing and a low-pressure-side side edge part (22d) of the thin-plate seal pieces. The thin-plate seal pieces have a thick part (31) that is formed further to the inside in the radial direction of the rotating shaft than an inner-circumferential-side tip part (26a) of the low-pressure-side plate.
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: January 29, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Kohei Ozaki, Azumi Yoshida, Hidekazu Uehara, Tanehiro Shinohara, Hiroharu Oyama
  • Patent number: 10174844
    Abstract: A shaft seal mechanism (11) that blocks a fluid (G) flowing within a ring-shaped space (14) is equipped with: a ring-shaped seal housing (21) disposed on a fixed section (12); a plurality of thin-plate seal pieces (22) that are secured to the seal housing (21), are in sliding contact with a rotating shaft (13), and are layered in a ring shape; a ring-shaped high-pressure-side plate (25) that forms a high-pressure-side gap (?H) between itself and the seal housing (21); a ring-shaped low-pressure-side plate (26) that forms a low-pressure-side gap (?L) between the seal housing (21) and the thin-plate seal pieces (22); stepped sections (31, 32) that are formed on side edge sections (22c, 22d) of the thin-plate seal pieces (22); and locking sections (25b, 26b) that lock the stepped sections (31, 32).
    Type: Grant
    Filed: December 15, 2015
    Date of Patent: January 8, 2019
    Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.
    Inventors: Hidekazu Uehara, Kohei Ozaki, Azumi Yoshida, Hiroharu Oyama
  • Patent number: 10145254
    Abstract: A sealing structure according to the embodiment includes a first cylinder, a second cylinder, an intermediate cylinder, a first sealing part, and a second sealing part. The first cylinder forms a flow passage of a working fluid of a turbine therein. The second cylinder is disposed at one end of the first cylinder and downstream from the flow passage. The intermediate cylinder is disposed between the first and second cylinders. The first sealing part is disposed at one of a first region between the first cylinder and the intermediate cylinder and a second region between the second cylinder and the intermediate cylinder, and follows a positional displacement in a radial direction. The second sealing part is disposed at the other of the first and second regions, and follows a positional displacement in an axial direction.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: December 4, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norikazu Takagi, Shogo Iwai
  • 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: 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: 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: 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: 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: 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: 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: 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: 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