Brush Seal Patents (Class 277/355)
  • 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
  • Patent number: 8844131
    Abstract: A process is provided for forming a leaf-spacer pair for use in a leaf seal which effects a seal between two components. The process includes the steps of: (a) providing a leaf section which maintains, in the leaf seal, wiping contact with one of the components, and a root section from which the leaf section extends and which, in the leaf seal, is fixed relative to the other component, the leaf section and the root section being formed from a first sheet of material of substantially uniform thickness; (b) providing a spacer formed from a second sheet of material, the spacer being physically separate from the leaf section and the root section; and (c) fastening the spacer to the root section to form a leaf-spacer pair in which the spacer overlays the root section and remains fixed relative thereto on handling of the leaf-spacer pair.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: September 30, 2014
    Assignee: Rolls-Royce PLC
    Inventor: Gervas Franceschini
  • Patent number: 8840113
    Abstract: A brush seal including a bristle pack mounted in a holder, and having a free end for sealing with a member, a front plate for lying on a high pressure side of the seal and extending part way along the length of the bristle pack to a free end being spaced from the bristle pack characterised in that the front plate is formed for or carries a formation for reducing the influence of swirling fluid on the high pressure side on the bristle pack.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: September 23, 2014
    Assignee: Cross Manufacturing Company (1938) Limited
    Inventors: Peter Francis Crudgington, Aaron Bowsher
  • Publication number: 20140241877
    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: Application
    Filed: October 25, 2012
    Publication date: August 28, 2014
    Inventors: Hidekazu Uehara, Tanehiro Shinohara, Yukihiro Hashimoto, Shin Nishimoto, Takashi Nakano, Masato Aaki, Keita Takamura
  • Patent number: 8814169
    Abstract: A front plate and brush seal assembly for providing a seal between a high pressure area and a low pressure area. An embodiment of a front plate includes a front plate body. The front plate body includes an inner peripheral edge and an outer peripheral edge. A plurality of cuts or slots are provided in the front plate body and extend from the outer peripheral edge of the front plate body toward the inner peripheral edge of the front plate body, such that the plurality of cuts or slots do not extend to the inner peripheral edge, and the plurality of cuts or slots define a plurality of fingers in the front plate body. In an embodiment of a brush seal assembly, the assembly includes a retaining plate that is connected to a front plate.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: August 26, 2014
    Assignee: Eaton Corporation
    Inventor: John F. Short
  • Patent number: 8813359
    Abstract: A process is provided for manufacturing leaf seals for effecting seals between coaxial, relatively rotating components. Each leaf seal has an annular pack of leaves which are stacked face-to-face, and are mountable to one of the components at respective root portions of the leaves. The annular pack has a pack radius at the wiping contact edges which is matched within tolerance limits to the radius of the sealing surface. The process includes: determining production parameters for the production of a plurality of leaf seals, the parameters being determined such that at least a portion of the produced leaf seals will have pack radii which violate the tolerance limit; producing the leaf seals using the determined production parameters; and modifying the pack radii of the portion of the produced leaf seals which violate the tolerance limit such that the modified pack radii match the sealing surface within the tolerance limits.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: August 26, 2014
    Assignee: Rolls-Royce, PLC
    Inventor: Ingo Henry Johannes Jahn
  • Patent number: 8806750
    Abstract: A forced oscillation radial seal is described for regenerative air preheaters which contain rotatable radial plates having upper and lower edges. The forced oscillation seal includes a base with a first portion attached to a lateral face of the plates adjacent the upper and lower edges, and a second free portion, with a pivot system having an axis attached to the second free portion, and a rigid sealing sheet with a first free portion, second portion, and central portion, the sealing sheet attached at its central portion to the pivot system. The forced oscillation seal includes a counterweight attached to the sealing sheet so the sealing sheet reassumes a vertical position after forming a seal with a sealing surface, and a plurality of springs in contact with the sealing sheet and base along the axis of the pivot system, which cooperate with the counterweights to force the seal to oscillate.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: August 19, 2014
    Inventor: Fernando Treviño Hurtado
  • Publication number: 20140225326
    Abstract: The present application provides for a brush seal system for use about a rotor of a rotary machine. The brush seal system may include a number of brush seal segments, with each of the brush seal segments having a number of bristles, and one or more of the brush seal segments including an elliptical profile so as to vary a clearance between the brush seal segments and the rotor.
    Type: Application
    Filed: April 15, 2014
    Publication date: August 14, 2014
    Applicant: General Electric Company
    Inventors: Xiaoqing Zheng, Mehmet Demiroglu, Michael Dennis Mack, Guoqiang Lu
  • Patent number: 8794633
    Abstract: A leaf seal assembly provides a fluidic seal between a first and second member and includes first and second cover plates defining a channel, with a first and second edge, respectively. A plurality of leaf elements are located within the channel, each element having first and second edges adjacent to the first and second cover plates, respectively and a projecting portion of each element extends beyond both edges. A fluid flow in a first direction causes the leaf elements to move away from the first member to create a fluid passage between the elements and the member, allowing a flow through the seal in the first direction; and a fluid flow in a second direction causes the leaf elements to move towards the first member such that a third edge of the projecting portion of each element contacts the member, opposing the flow through the seal in the second direction.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: August 5, 2014
    Assignee: Rolls-Royce PLC
    Inventor: David Stephen Williams
  • Patent number: 8794632
    Abstract: A leaf seal assembly (20) for providing a seal between a first member and a second member (10), the leaf seal assembly comprising a plurality of leaf elements (22) and a first substantially planar cover plate (24a), the leaf elements being arranged in a pack, with a first edge of each leaf element being adjacent to the first cover plate, wherein each leaf element comprises a first shoulder (30a) in the first edge, the first shoulder being arranged so as to form a first gap (28a) between the first edge of each leaf element and the first cover plate over a portion of the first edge.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: August 5, 2014
    Assignee: Rolls-Royce PLC
    Inventor: Ingo H. J. Jahn
  • Patent number: 8794631
    Abstract: A compliant plate seal manufacturing method is provided. The method includes assembling a plurality of compliant plates and a plurality of spacer shims into a weld fixture, thereby forming a leaf pack having a front and rear end and sides and a curvature, welding the sides of the leaf pack to hook plates on the weld fixture, removing a portion of the weld fixture, removing a portion of the hook plates and applying a radial flow plate to the leaf pack.
    Type: Grant
    Filed: January 12, 2009
    Date of Patent: August 5, 2014
    Assignee: General Electric Company
    Inventors: Michael Dennis Mack, William Edward Adis, Hrishikesh Vishvas Deo, Daniel Frederick Purdy, Norman Arnold Turnquist
  • Patent number: 8776864
    Abstract: A seal assembly for a regenerative heat exchanger can include a primary sealing member with a mounting base and a flexible contact portion that defines a first distance between a proximal edge of the mounting base and a contact edge of the flexible contact portion, the first distance being generally constant along the length of the primary sealing member. The seal assembly can also include a second member with a mounting portion and a cantilevered portion that defines a second distance between a proximal edge of the mounting portion and a distal edge of the cantilevered portion, the second distance being generally constant along the length of the second member. The first distance is greater than the second distance by a predetermined amount so as to limit the preload flexure of the flexible contact portion against a sector plate of the heat exchanger when the seal assembly is installed in the regenerative heat exchanger.
    Type: Grant
    Filed: August 17, 2009
    Date of Patent: July 15, 2014
    Assignee: Paragon Airheater Technologies, Inc.
    Inventors: Frank Klisura, Stephan Hastings
  • Patent number: 8752288
    Abstract: A first process is provided for forming a stack of leaves for use in a leaf seal which effects a seal between two components. Corresponding processes are provided for forming a leaf-spacer pair and then for forming a stack of leaves from such pairs. Each leaf of the stack has a leaf section which maintains wiping contact with one of the components and a root section which is fixed relative to the other component and from which the leaf section extends. The stack includes a plurality of spacers which interpose between the root sections.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: June 17, 2014
    Assignee: Rolls-Royce PLC
    Inventors: David S. Williams, Ingo H. J. Jahn, Gervas Franceschini
  • Patent number: 8727354
    Abstract: A brush seal assembly is disclosed that includes bristles arranged circumferentially about an axis to provide a bristle assembly. First and second plates are secured about the bristle assembly to provide a subassembly. A circumference of the subassembly is pressed into a retaining ring to provide the brush seal assembly. The circumference need not be machined. A perimeter weld is no longer needed to secure the first and second plates and bristle assembly to one another to provide the brush seal assembly.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: May 20, 2014
    Assignee: United Technologies Corporation
    Inventor: Mark E. Addis
  • Patent number: 8727353
    Abstract: A brush seal adapted to restrict a fluid flow through a gap between a first component and a second component, comprising: a body; a brush pack secured to the body; and a passage through the body for introducing a cooling flow to said gap. The passage has a first end that is exposed to the gap and a second end that is not exposed to the gap. The passage discharges a cooling flow to the brush seal, the cooling flow being discrete from the fluid flow.
    Type: Grant
    Filed: April 5, 2006
    Date of Patent: May 20, 2014
    Assignee: United Technologies Corporation
    Inventor: Mark E. Addis
  • Patent number: 8707711
    Abstract: An apparatus is provided for sealing a channel fluidly connecting between a high pressure zone and a low pressure zone. The apparatus has at least two brush seal elements provided in the channel in series in a direction from the high pressure zone toward the low pressure zone to define an intermediate zone between the brush seal elements. The intermediate zone is fluidly connected to the low pressure zone through a bypass or passage, allowing a fluid in the intermediate zone to flow in part through the bypass to the low pressure zone.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: April 29, 2014
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventor: Kazuhiko Tanimura
  • Patent number: 8702105
    Abstract: Provided is a seal member, which is used in a heating furnace having an insertion port to which an end of a rod to be heated is inserted and seals between the insertion port and a surface of the rod inserted to the insertion port in an airtight manner, the seal member having: a plurality of seal chips in thin strips arranged along an inner surface of the insertion port in an airtight manner, each seal chip having one end held by the inner surface of the insertion port and the other end elongated towards inside the insertion port, where (a) when the rod is not inserted in the insertion port, each of the plurality of seal chips forms a slanting angle with respect to an insertion direction of the rod and (b) when the rod is inserted in the insertion port, the other end of each of the plurality of seal chips is pressed against a surface of the rod by means of elastic deformation.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: April 22, 2014
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventor: Tetsuya Otosaka
  • Patent number: 8695351
    Abstract: An annular seal for use between coupled combustor components includes a segmented annular solid edge portion and a plurality of alternating spring fingers and slots extending from the solid edge portion and arranged about a circumference of the solid edge portion, wherein one or more of the plurality of spring fingers or one or more of the plurality of straight and angled slots have non-uniform width dimensions.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: April 15, 2014
    Assignee: General Electric Company
    Inventors: Wei Chen, Donald Timothy Lemon, Mert Enis Berkman, Richard Martin Dicintio
  • Patent number: 8690159
    Abstract: A brush seal is disclosed that may include a spring-loaded seal arrangement configured to conform to a wide range of sealing diameters along the length of a rotor of a turbomachine. In particular, the brush seal may be manufactured with free ends configured to overlap and provide a finite amount of radially expandable/contractible play and yet maintain an effective seal. Consequently, the same brush seal design may be used in a range of locations along a rotor length without the need to specifically manufacture separate brush seals for each variance in dimension.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: April 8, 2014
    Assignee: Dresser-Rand Company
    Inventors: David J. Peer, Robert E. Kunselman
  • Patent number: 8690160
    Abstract: A brush seal assembly including a pair of annular plates defining an annular slot between them and a radially outer chamber opening into the slot; and an annular brush seal having bristles and an enlarged portion at its outer periphery formed by welding the bristles together, the brush seal extending through the slot with its enlarged portion retained in the chamber wherein at least a portion of one of the plates has an extension thereof which is deformed over the other plate to hold the plates together to form the assembly characterized in that one of the plates has a flat face in the region of the slot.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: April 8, 2014
    Assignee: Cross Manufacturing Company (1938) Limited
    Inventor: Peter Francis Crudgington
  • Patent number: 8690158
    Abstract: A seal member for effecting a seal preventing fluid flow in an axial direction through an annular space formed between a rotatable shaft and a stator structure. The seal member includes a plurality of flexible seal strips extending radially through the annular space and having a radially outer end supported to the stator structure and a radially inner end defining a tip portion extending widthwise in the axial direction for engaging in sliding contact with a peripheral surface of the rotatable shaft. The seal strips are mounted to the stator structure with the tip portions of the seal strips at an angle to the axial direction. Each of the tip portions are formed with a curvature in a radially extending plane between a leading edge and a trailing edge of each seal strip.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: April 8, 2014
    Assignee: Siemens Energy, Inc.
    Inventor: Alexander R. Beeck
  • Patent number: 8678396
    Abstract: A leaf seal device having a connection holding section of a sealing plate which is bent at a first bending section. A plurality of laminated sealing plates are engaged sequentially at the first bending section. An inclined face at an inner circumferential side of the connection holding section, a pitch and a space of a sealing section are changed.
    Type: Grant
    Filed: February 3, 2012
    Date of Patent: March 25, 2014
    Assignee: Eagle Industry Co., Ltd.
    Inventor: Toru Kono
  • Publication number: 20140070496
    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: Application
    Filed: April 5, 2013
    Publication date: March 13, 2014
    Applicant: Rolls-Royce PLC
    Inventor: Rolls-Royce PLC
  • Patent number: 8657298
    Abstract: A brush seal assembly is provided, including a sealing surface, a side plate, a backing plate, a plurality of bristles, and a biasing member. The backing plate is selectively located in a stationary position and has at least one backing tooth and a backing tip. The backing tooth has a tooth surface and the backing tip has a tip surface. A tooth clearance is measured between the tooth surface and the sealing surface. A tip clearance is measured between the tip surface and the sealing surface. The tooth clearance is less than the tip clearance. The bristles are located between the side plate and the backing plate. The bristles include an end portion for sealing to the sealing surface. The biasing member exerts a biasing force upon the backing plate in a direction towards the sealing surface. The backing tooth is configured for selectively contacting the sealing surface.
    Type: Grant
    Filed: August 15, 2011
    Date of Patent: February 25, 2014
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Hemant Vinayak Gedam
  • Patent number: 8632074
    Abstract: This invention relates to a method of forming brush seals and to brush seals themselves. Thus a back plate 10, which defines an anchor recess 11, a reservoir recess 12 and a land 13 is laid horizontally. A bristle pack 14 is then laid on top of the back plate 10, so that one end 15 overlies a recess 11 and the other, 16, projects beyond the land 13. The bristles are then clamped in position by clamp 21 and epoxy resin is poured into the recess 11 as indicated by the arrows. A mold is introduced over the recess. Once the resin is cured, the mold can be removed and it will be noted that excess epoxy resin has fallen into the recess 12 preventing resin wicking beyond the land 13 and interfering with the performance of the bristles.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: January 21, 2014
    Assignee: Cross Manufacturing Company (1938) Limited
    Inventors: Aaron Bowsher, Matthew Richard Jenkins
  • Patent number: 8632075
    Abstract: According to one aspect of the invention, a seal assembly includes a mounting structure coupled to an inner static structure in a turbine. Further, the seal assembly includes a brush seal member coupled to the mounting structure, wherein the brush seal member includes a first end that is in sealing contact with a rotor and a second end in sealing contact with a stator and wherein the brush seal member includes a plurality of bristles.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: January 21, 2014
    Assignee: General Electric Company
    Inventor: Karimulla Shaik Sha
  • Patent number: 8608174
    Abstract: The present invention provides a leaf seal device which is available to assemble easily and to control and to set an inclination angle and a space of a sealing section. In the leaf seal device of the present invention, a connection holding section 21 of a sealing plate 12 is bent at a first bending section 22. Thereby, since laminated a plurality of sealing plates 12 are engaged sequentially at the first bending section 22, a radial direction is defined so as to become easily assemble. Also, according to inclining a face 24 at an inner circumferential side of the connection holding section 21, a pitch and a space of a sealing section 31 are changed. Therefore, the space of the sealing section can be controlled, if controlling a bend angle of the first bending section 22.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: December 17, 2013
    Assignee: Mitsubishi Industries, Ltd.
    Inventor: Toru Kono
  • Publication number: 20130320624
    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: Application
    Filed: May 29, 2013
    Publication date: December 5, 2013
    Inventor: Ingo Henry Johannes JAHN
  • Publication number: 20130320627
    Abstract: Described is a leaf seal for sealing between a static component and a relatively rotating component having an axis of rotation, the leaf seal defining axially separated higher pressure upstream and lower pressure downstream areas within the static component when in use, the leaf seal comprising: a plurality of leaf elements having: a root end for attachment to the static component; a free end for wiping contact with the rotating component; an upstream edge extending from the root end to the free end; and, a downstream edge extending from the root end to the free end, wherein the leaf element width between the upstream edge and downstream edge at the root end is a, and width between the upstream edge and the downstream edge at the free end is b, where b<0.5?.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 5, 2013
    Inventors: Adele NASTI, Gervas FRANCESCHINI
  • Publication number: 20130313782
    Abstract: A method of forming a seal for effecting a seal between two, coaxial, relatively rotating components is provided. The seal has an annular pack of elongate flexible members. The pack is mountable to a first one of the components at the root portions of the flexible members and extending towards the other component. End portions of the flexible members are presented for wiping contact with the other component. The method includes the steps of: (i) forming a plurality of pack segments, wherein each segment contains a respective subset of the flexible members of the annular pack, and wherein the end portions of the flexible members of each subset, when viewed in the axial direction of the seal, lie on a straight line; and (ii) assembling the pack segments in a substantially circular pack holder such that each pack segment forms a respective angular sector of the annular pack.
    Type: Application
    Filed: April 30, 2013
    Publication date: November 28, 2013
    Applicant: Rolls-Royce PLC
    Inventors: Ingo Henry Johannes JAHN, Gervas FRANCESCHINI
  • Patent number: 8585058
    Abstract: A leaf seal for sealing a shaft rotating about an axis, in particular in a gas turbine, includes a multiplicity of spaced-apart leaves (26) which are arranged in a concentric circle around the axis and are fixed in their position by welded connections produced by electron beam welding, the leaves (26), with their surfaces, being oriented essentially parallel to the axis. The welded connections of the leaves are improved by the leaves (26) being designed in such a way and being arranged in the leaf seal in such a way that they abut against one another at the side edges directly or via intermediate spacers (27) along at least one contact line (36) extending over a plurality of leaves (26), and by the welded connections being designed as welds directed along the at least one contact line (36) and oriented in axial direction.
    Type: Grant
    Filed: October 3, 2006
    Date of Patent: November 19, 2013
    Assignee: ALSTOM Technology Ltd.
    Inventors: Nigel Anthony Rhodes, Ernst Vogt
  • Publication number: 20130300067
    Abstract: A system for sealing a gas path in a turbine includes a brush holder and a support connected to the brush holder and extending away from the brush holder. The support has an upstream side and a downstream side. A plurality of upstream bristles is connected to the brush holder along the upstream side of the support, and a plurality of downstream bristles is connected to the brush holder along the downstream side of the support. The upstream and downstream bristles have terminal ends that extend away from the brush holder.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 14, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Kunal Upendra Sakekar, Bhaskar Ram, Srinivasarao Pakkala, Shaik Karimulla Sha
  • Publication number: 20130277918
    Abstract: A shaft seal assembly externally mounted to a high temperature device, such as a gas or steam turbine, having a plurality of rotary shaft sealing brush seals that includes at least one brush seal of wear-compensating construction that possesses a suitably high linear coefficient of expansion so it viscoelestically creeps over time compensating for brush seal wear. In one embodiment, a brush seal closest to the device is formed of an electrically conductive material that electrically grounds a rotary shaft of the device during shaft rotation and at least one other brush seal is formed of filaments of polymeric material, such as heat stabilized nylon, of wear compensating construction. In one preferred embodiment, the filaments of the inner brush seal are made of a self-lubricating metallic or bearing material and at least one other brush seal is formed of an intumescing material that can be of polymeric composition.
    Type: Application
    Filed: December 13, 2011
    Publication date: October 24, 2013
    Applicant: Sealeze, A Unit Of Jason Incorporated
    Inventors: Patrick Fitzgerald, David D. Stein
  • Publication number: 20130256992
    Abstract: The present application provides for a brush seal system for use about a rotor of a rotary machine. The brush seal system may include a number of brush seal segments, with each of the brush seal segments having a number of bristles, and one or more of the brush seal segments including an elliptical profile so as to vary a clearance between the brush seal segments and the rotor.
    Type: Application
    Filed: March 27, 2012
    Publication date: October 3, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Xiaoqing Zheng, Mehmet Demiroglu, Michael Dennis Mack, Guoqiang Lu
  • Publication number: 20130249169
    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, characterised in the front and back plates have one or more apertures dimensioned for providing a substantially symmetric pressure drop across the leaves.
    Type: Application
    Filed: May 13, 2013
    Publication date: September 26, 2013
    Applicant: CROSS MANUFACTURING COMPANY (1938) LIMITED
    Inventors: Aaron Bowsher, Peter Francis Crudgington
  • Patent number: 8505923
    Abstract: A brush seal usable in high temperature sealing applications having brush bristles and a sealing membrane of stress and deflection accommodating construction capable of longitudinal extensibility. Sealing membrane has one portion slidably overlapped with another portion. In one embodiment, membrane is folded over itself providing slidable overlapping in one direction and is formed of overlapping membrane sheets providing slidable overlapping in another direction. In another embodiment, membrane has spaced apart deformation regions providing longitudinal extensibility in accommodating stress and/or deflection. Membrane can be made of metallic foil having a thickness no greater than brush bristle width or diameter and is embeddable in bristles of the brush seal.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: August 13, 2013
    Assignee: Sealeze, A Unit Of Jason, Inc.
    Inventors: Roger Ferryman, Patrick Fitzgerald
  • Patent number: 8500128
    Abstract: A sealing device for a coolant supply on a rotating spindle includes a first brush seal and a second brush seal arranged one after another in series on the spindle. An annular leakage chamber is formed axially between the first and second brush seals, and radially between the spindle and a spindle housing.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: August 6, 2013
    Assignee: MTU Aero Engines GmbH
    Inventors: Alfons Gail, Stefan Beichl
  • Patent number: 8490981
    Abstract: A brush seal, brush seal segment, and brush seal backplate for use in a rotary device are provided. In one embodiment, the invention provides a brush seal for a rotary device, the brush seal comprising: a plurality of brush seal segments, each segment including: an arcuate fence; an arcuate backplate circumferentially coextensive with the arcuate fence, the arcuate backplate including: a plurality of circumferentially-oriented cavities; a first dam along a first end of the arcuate backplate, the first dam substantially closing an end of at least one of the plurality of circumferentially-oriented cavities; and a second dam along a second end of the arcuate backplate, the second dam substantially closing an end of at least one of the plurality of circumferentially-oriented cavities; a plurality of brush bristles between the arcuate backplate and the arcuate fence; and a static member to which at least one of the plurality of brush seal segments is affixed.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: July 23, 2013
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, William Edward Adis, Michael Dennis Mack
  • Patent number: 8490980
    Abstract: A seal arrangement (1, 101) for maintaining an axial pressure differential between relative high and low pressure stages along a rotating element (2, 102), the arrangement comprising: i) a plurality of leaf or brush seal members (5) forming a circumferential seal-pack (4, 104) around the rotating element (2, 102), in-between said low and high pressure stages, for limiting leakage of fluid between said low and high pressure stages; ii) a baffle (6, 7, 106, 107) positioned on the upstream or downstream side of the seal-pack (4, 104) for regulating such leakage through the seal pack (4, 104); and iii) a control arrangement for adjusting the position of the baffle (6, 7, 106, 107) hereby to control the regulation of said leakage through the seal-pack (4, 104) and hence control the consequent blow-down effect on the seal-pack (4, 104) caused by that leakage.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: July 23, 2013
    Assignee: Rolls-Royce PLC
    Inventors: Christopher Wright, Simon D. Granville-George
  • Publication number: 20130181408
    Abstract: A hybrid seal carrier for establishing a seal between a rotating component and a stationary component substantially surrounding the rotating component includes a first seal element held between forward and aft end plates and adapted to be seated within a first slot formed in the stationary component. A second seal element is seated within a second slot formed in one of the forward or aft end plate; wherein said first seal element comprises a plurality of bristles forming a brush seal; and said second seal element comprises at least one honeycomb seal.
    Type: Application
    Filed: January 13, 2012
    Publication date: July 18, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Srinivasa Rao Pakkala, John Clisby Blanton, Karimulla Sha Shaik
  • Publication number: 20130175761
    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: Application
    Filed: June 6, 2012
    Publication date: July 11, 2013
    Applicant: Sealeze, A Unit Of Jason Incorporated
    Inventors: Roger Ferryman, Patrick Fitzgerald, David Chrisman, Pavan Kumar Ravulaparthy
  • Publication number: 20130170979
    Abstract: A system having an axial brush seal assembly is provided, having a first component, a second component, at least two plates that generally oppose one another, a plurality of seal bristles, and a base plate. The first component has a first sealing surface. The second component has a second sealing surface. The plurality of seal bristles are received between the at least two plates. The plurality of seal bristles include a first end portion and a second end portion. The first end portion is configured to selectively seal against the first sealing surface and the second end portion is configured to selectively seal against the second sealing surface. At least one of the at least two plates is connected to the base plate, and the base plate supports the brush seal assembly. The axial brush seal assembly provides sealing for two leakage paths simultaneously.
    Type: Application
    Filed: January 4, 2012
    Publication date: July 4, 2013
    Applicant: General Electric Company
    Inventor: Karimulla Shaik Sha
  • Publication number: 20130168926
    Abstract: According to one aspect of the invention, a method for assembling a turbine includes placing a middle layer between a first and second outer member, wherein the middle layer includes a non-continuous layer of material and the first and second outer members each include a member of continuous material and welding a primary joint between the middle layer, first outer member and second outer member, the primary joint extending through the first outer member, the middle layer and at least a portion of the second outer member. The method also includes welding a secondary joint between the middle layer and first outer member, the secondary joint extending through the first outer member and at least a portion of the middle layer.
    Type: Application
    Filed: January 4, 2012
    Publication date: July 4, 2013
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Yan Cui, William Edward Adis, Srikanth Chandrudu Kottilingam, Dechao Lin, Michael Dennis Mack, Daniel Frederick Purdy
  • Publication number: 20130146695
    Abstract: A brush seal assembly for sealing a journal assembly includes a base flange configured and adapted to be mounted to a journal head, e.g., in a vertical pulverizer. A cylindrical skirt is mounted to the base flange and extends in an axial direction from the base flange. A seal mounting ring is mounted to the skirt opposite the base flange, and an annular brush seal is mounted to the seal mounting ring. The brush seal is configured and adapted to seal between the skirt and a journal housing.
    Type: Application
    Filed: December 5, 2012
    Publication date: June 13, 2013
    Applicant: Babcock Power Services, Inc.
    Inventor: Babcock Power Services, Inc.
  • Patent number: 8459652
    Abstract: A brush seal for a turbo-machine for sealing a gap between a rotating and a stationary component is disclosed. Elastically flexible bristles are arranged in a plurality of rows that are adjacent to each other. A film or a disk is arranged between at least two rows of bristles, the film or the disk extending in the longitudinal direction of said bristles.
    Type: Grant
    Filed: August 13, 2007
    Date of Patent: June 11, 2013
    Assignee: Siemens Aktiengesellschaft
    Inventors: Stefan Brück, Matthias Neef, Erik Sulda, Norbert Sürken
  • Patent number: 8459653
    Abstract: The present application provides a sealing assembly for use between a first component and a second component of a rotary machine. The sealing assembly may include a first sealing segment having a first end with a first angled surface and a second sealing segment having a second end with a second angled surface. The first angled surface of the first end of the first sealing segment meets the second angled surface of the second end of the second sealing segment at a joint.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: June 11, 2013
    Assignee: General Electric Company
    Inventor: Xiaoqing Zheng
  • Patent number: 8439364
    Abstract: This invention relates to a seal for sealing between a stator and rotor, including a generally annular carrier (11), an array of adjacent leaves (12) 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 (15, 16) disposed on respective axial sides of the leaves, characterized in the front and back plates (15, 16) have one or more apertures (17, 18) dimensioned for providing a substantially symmetric pressure drop across the leaves.
    Type: Grant
    Filed: March 18, 2008
    Date of Patent: May 14, 2013
    Assignee: Cross Manufacturing Company (1938) Limited
    Inventors: Aaron Bowsher, Peter Francis Crudgington
  • Publication number: 20130094957
    Abstract: A brush ring seal device for installation within a packing case of a turbine includes: a brush seal carrier having a substantially ring-shaped body portion having a front face, a rear face, an inner circumferential groove, and an outer circumferential groove; a brush seal mounted within the inner circumferential groove of the brush seal carrier; and a ring-shaped spring mounted within the outer circumferential groove of the brush seal carrier. The rear face of the brush seal carrier is coated with an anti-friction coating, thereby allowing movement of the brush ring seal device within the packing case.
    Type: Application
    Filed: April 27, 2011
    Publication date: April 18, 2013
    Applicant: ELLIOTT COMPANY
    Inventor: Michael Arthen Mindock, III
  • Patent number: 8413992
    Abstract: A shaft seal that is constituted by annularly arranging a plurality of seal segments in the circumferential direction of a rotating shaft, in which each seal segment has a plurality of thin plates that are provided in a predetermined arrangement in the circumferential direction of the rotating shaft, side plates that sandwich the plurality of thin plates from both sides thereof in the axial direction, and retention rings that retain the base ends of the plurality of thin plates and the base ends of the side plates; the distal ends of the thin plates protrude farther toward the rotating shaft than the distal ends of the side plates, and the protrusion length of the distal ends of the thin plates in the vicinity of the end portions in the circumferential direction where adjacent seal segments are connected is set to be less than the protrusion length of the distal ends of the thin plates that are located at the middle of the seal segment in the circumferential direction.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: April 9, 2013
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hidekazu Uehara, Tanehiro Shinohara, Takashi Nakano, Shin Nishimoto
  • Publication number: 20130084166
    Abstract: A component, in particular for a gas turbine, is disclosed. The component has at least two component segments which are arranged relative to one another leaving a gap and are sealed against each other by a sealing device. The sealing device includes at least one brush seal. Also disclosed is a gas turbine, in particular an aircraft engine, having such a component.
    Type: Application
    Filed: September 21, 2012
    Publication date: April 4, 2013
    Inventor: MTU Aero Engines GmbH