Brush Seal Patents (Class 277/355)
  • 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
  • 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: 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: 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: 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
  • Patent number: 9046179
    Abstract: An axial seal structure includes a high-pressure-side regulating member configured to regulate the flow of a fluid from a high-pressure-side region to multiple thin sheet seal pieces arranged with a minute gap between each of the multiple thin sheet seal pieces in a circumferential direction along a high pressure side of the multiple thin sheet seal pieces and along an outer peripheral surface of a rotating shaft. The high-pressure-side regulating member has multiple wires that are flexible. Respective longitudinal directions of the multiple wires are directed towards a direction having a radial component of the rotating shaft. Tips that are radial inner ends of the wires form free ends, and are in close proximity to or in contact with the outer peripheral surface of the rotating shaft. The wires that are adjacent to each other in the circumferential direction come into contact with each other partially in the longitudinal directions.
    Type: Grant
    Filed: June 23, 2011
    Date of Patent: June 2, 2015
    Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hidekazu Uehara, Tanehiro Shinohara, Takashi Nakano, Shin Nishimoto
  • Patent number: 9010763
    Abstract: A leaf seal has a pair of annular packs of stacked leaves. Each pack is mountable to one of the components with its leaves extending towards the other component such that the leaf edges of at least one of the packs are presented for wiping contact with the other component. The packs are axially spaced from each other by a controlled axial clearance. Within each pack the leaves are stacked face-to-face such that neighboring leaves are separated from each other by interleaf gaps which allow an axial leakage flow through the seal. Further, within each pack the packs are positioned such that, when viewed in the axial direction, the leaves of each pack of the pair substantially obscure the interleaf gaps of the other pack of the pair. The controlled axial clearance is the dominant flow restriction in the seal determining the amount of leakage flow through the seal.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: April 21, 2015
    Assignee: Rolls-Royce PLC
    Inventor: Ingo Henry Johannes Jahn
  • Patent number: 8998212
    Abstract: A leaf seal is provided for effecting a seal between two coaxial, relatively rotating components. The leaf seal has an annular pack of leaves which are stacked face-to-face within the pack, and which are mountable to one of the components at respective root portions of the leaves such that the leaves extend towards the other component and respective edges of the leaves are presented for wiping contact with the other component. The pack includes a plurality of spacers, each spacer separating the root portions of neighboring leaves to form therebetween interleaf gaps which allow an axial leakage flow through the pack. The spacers are distributed around the pack such that the leaves are divided into blocks of two or more leaves sandwiched at their root portions between nearest-neighbor spacers.
    Type: Grant
    Filed: November 9, 2012
    Date of Patent: April 7, 2015
    Assignee: ROLLS-ROYCE plc
    Inventor: Ingo Henry Johannes Jahn
  • Publication number: 20150093235
    Abstract: The present invention relates to a brush seal for a turbomachine, having a support (1) that has a recess (2), in which a spring element (3) is clamped axially, which fastens a brush element (4), the spring element being axially locked at an undercut (2.1) in the recess.
    Type: Application
    Filed: September 25, 2014
    Publication date: April 2, 2015
    Inventor: Frank Stiehler
  • Publication number: 20150084285
    Abstract: The invention relates to a brush seal (10), in particular for the sealing of gaps occurring in turbomachines, including a plurality of individual fibers (12), individual wires or bundles (14) of individual fibers or wires, wherein, in each case, at least two individual fibers (12) or wires, and/or at least two fiber bundles (14) or wire bundles are braided or twisted into a fiber or wire package (16). In addition, the invention relates to a method for producing a brush seal (10).
    Type: Application
    Filed: September 18, 2014
    Publication date: March 26, 2015
    Inventors: Christoph Cernay, Stephan Prostler, Wolfgang Schmidmayr, Julian Weber, Benjamin Grobkurth, Stefan Beichl
  • Publication number: 20150061228
    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: Application
    Filed: September 2, 2014
    Publication date: March 5, 2015
    Inventor: Frank STIEHLER
  • Patent number: 8939709
    Abstract: A system for operating a turbine includes a rotating component and a non-rotating component separated from the rotating component by a clearance. A first actuator is connected to the non-rotating component, and the first actuator comprises a shape-memory alloy. A method for operating a turbine includes sensing a parameter reflective of a clearance between a non-rotating component and a rotating component and generating a parameter signal reflective of the clearance. The method further includes generating a control signal to at least one actuator based on the parameter signal and moving at least a portion of the non-rotating component relative to the rotating component to change the clearance.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: January 27, 2015
    Assignee: General Electric Company
    Inventors: Biju Nanukuttan, Rakesh Adoor, Hariharan Sundaram, James Adaickalasamy, Prasad Punna
  • Publication number: 20150021860
    Abstract: There is disclosed a leaf seal (131) for effecting a seal between first (134) and second 1) coaxial components arranged for relative rotation about a common axis. The seal is particularly suited for use in a gas turbine engine, and has: an annular pack (50) of stacked leaves (132) mountable to said first component (134) at root portions (140) of the leaves distal to the second component (51) and extending towards the second component (51) such that end edges(136) of the leaves (132) are proximal to the second component (51); and a plurality of seal elements (52) which cooperate to define an annulus extending around a surface (137) of the second component (51). Each seal element (52): forms a sector of the annulus; is mounted to the leaf pack (50) at the end edges (136) of a respective group of said leaves (132); and defines a respective seal surface (53) which is presented for interaction with said surface (137) of the second component (51) during relative rotation between the components.
    Type: Application
    Filed: July 11, 2014
    Publication date: January 22, 2015
    Inventor: Michael Joseph PEKRIS
  • Publication number: 20150016959
    Abstract: A partial seal platform for mounting a seal and securing seal to a rotor or a casing including a first arcuate securing segment with a first securing notch for receiving a first securing ridge of rotor or casing; a second arcuate securing segment with a second securing notch for receiving a second securing ridge of rotor or casing; an arcuate coupling segment with a first flat ridge forming a first and second lateral notch on each side of the first flat ridge for receiving the first arcuate securing segment and the second arcuate securing segment; and an arcuate mounting segment including a second flat ridge forming a lateral notch on each side of second flat ridge for receiving first arcuate securing segment and second arcuate securing segment.
    Type: Application
    Filed: July 15, 2013
    Publication date: January 15, 2015
    Inventors: Thomas Joseph Farineau, Michael Dennis Mack, Timothy Scott McMurray, Xiaoqing Zhen
  • Publication number: 20150014938
    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 attached adjacent to the bristle part on its low-pressure side to restrict the movement of the bristle part. The brush seal for sealing a fluid between the stationary part and rotational part is characterized in that the bristle part is formed by the multiple bristles such that the multiple bristles arranged in a direction of fluid are mutually fixed between a base end and a free end to form planar bristles arranged continuously in layers in a circumferential direction to form the bristle part.
    Type: Application
    Filed: February 28, 2013
    Publication date: January 15, 2015
    Inventor: Hideyuki Inoue
  • Publication number: 20150014939
    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: Application
    Filed: February 28, 2013
    Publication date: January 15, 2015
    Applicant: EAGLE INDUSTRY CO., LTD.
    Inventor: Hideyuki Inoue
  • Patent number: 8925199
    Abstract: A method for fabricating a brush seal assembly comprising, bending a first plate member to a helical shape, bending a second plate member to a helical shape, securing the first plate member to a drum, winding a wire material around the drum and the first plate member, securing the second plate member to the drum, attaching the second plate member and the first plate member to the wire, and cutting the wire to define a bristle length.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: January 6, 2015
    Assignee: General Electric Company
    Inventors: William Edward Adis, Bernard Arthur Couture, Jr., Marshall Gordon Jones, Michael Dennis Mack, Daniel Frederick Purdy
  • Publication number: 20150001808
    Abstract: A leaf seal is proposed for effecting a seal between two coaxial and relatively rotating components. The seal has an annular pack of stacked leaves, the pack being mountable to a first one of the components at root portions of the leaves and extending towards the other component such that end edges of the leaves cooperate to define a seal surface of the pack which is presented for air-riding interaction with a surface of the other component during relative rotation between the components such that, in use, a pressure drop is maintained axially across the pack. The seal surface of the pack incorporates a plurality of hydrodynamic lift-generating recesses spaced circumferentially around the pack. Each said recess extends circumferentially across a plurality of adjacent leaves in the pack, each of which leaves being spaced radially from said surface of the other component along at least part of its end edge.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Inventors: Gervas FRANCESCHINI, David Anthony EDWARDS
  • Publication number: 20150001809
    Abstract: Described is a brush seal for sealing between a first component and a second component which relatively rotate during normal use, comprising: an annular housing which is attached to a first component in use; a plurality of bristles each having a fixed end attached to the housing and a free end, wherein the free ends of at least some of the plurality of bristles contact the second component during normal use to provide a sealing surface, wherein the sealing surface includes a plurality of discontinuities around the circumference of the brush seal for providing hydrodynamic lifting force in use.
    Type: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Inventors: Gervas FRANCESCHINI, Terence Valentine JONES, Felix LEPETIT
  • Publication number: 20150001805
    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: Application
    Filed: June 27, 2014
    Publication date: January 1, 2015
    Inventor: Gervas FRANCESCHINI
  • Patent number: 8919780
    Abstract: A brush seal and brush seal segment for use in a rotary device are provided. In one embodiment, the invention provides a brush seal comprising: a plurality of brush seal segments, each segment including: an arcuate fence; an arcuate backplate substantially circumferentially coextensive with the arcuate fence, the arcuate backplate including a first end and a second end; and a plurality of brush seal bristles between the arcuate backplate and the arcuate fence, the plurality of brush seal bristles being angled with respect to a radial axis of the arcuate backplate and at least one of the first end and the second end of the arcuate backplate; and a static member to which at least one of the plurality of brush seal segments is affixed.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: December 30, 2014
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, William Edward Adis, Bernard Arthur Couture, Jr., Michael Dennis Mack
  • Publication number: 20140361489
    Abstract: The present application provides an axially retractable seal system positioned within a seal slot of a stationary component and adjacent to a rotating component. The axially retractable seal system may include a seal with an upper flange positioned within the seal slot and one more bristles extending towards the rotating component and a spring positioned axially between the upper flange of seal and the seal slot such that the seal is forced into a retracted position.
    Type: Application
    Filed: June 5, 2013
    Publication date: December 11, 2014
    Inventor: Andrew Paul Giametta
  • Patent number: 8864138
    Abstract: The invention concerns a system for providing a seal between two volumes (V1, V2) delimited by a part (2A) mounted to rotate about an axis (A) and a stator (6), said system (S) including an annular brush seal (7) that comprises: a brush body (8) pivotally mounted in the stator; and fibers (10) fixed to the brush body and inclined at an angle ? relative to a plane (P) orthogonal to the rotation axis (A), wherein it includes means (11, 12) for adjusting the angle ? of the fibers (10) so as to be able to adjust precisely the clearance between the free end (10A) of the fibers and the rotary part (2A).
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: October 21, 2014
    Assignee: SNECMA
    Inventors: Nelson Dos Santos, Dominik Igel, Gerard Philippe Gauthier
  • Publication number: 20140301848
    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: Application
    Filed: November 16, 2012
    Publication date: October 9, 2014
    Inventors: Sebastian Valero Lafuente, Jesús Lorita, Javier Bescos