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    System and method including a circumferential seal assembly to facilitate sealing in a turbine
    41.
    发明授权
    System and method including a circumferential seal assembly to facilitate sealing in a turbine 有权

    公开(公告)号：US10280777B2

    公开(公告)日：2019-05-07

    申请号：US14577549

    申请日：2014-12-19

    Applicant: General Electric Company

    Inventor： Neelesh Nandkumar Sarawate ,  Norman Arnold Turnquist ,  Christopher Edward Wolfe

    IPC: F01D11/00 ,  F02C3/04 ,  F01D11/02 ,  F16J15/08 ,  F16J15/10 ,  F16J15/12

    Abstract: A method and system including a circumferential seal assembly for sealing between components within a turbine is provided. A circumferential seal assembly is disposed in a slot extending circumferentially about an inner barrel. The seal assembly includes a first shim layer and at least one additional shim layer configured in an overlapping stacked configuration so as to stagger the end portions of each of the shim segments defined by the shim layers, relative to one another and circumferentially about the seal assembly. One or more cloth layers are configured wrapping about the first shim layer and the at least one additional shim layer to define a sealing member having a first sealing surface and a second sealing surface. The assembly further including a base plate, wherein the sealing member is disposed on an upper surface of the base plate to provide for sealing engagement between the components of the turbine.

    Seal assembly to seal end gap leaks in gas turbines
    43.
    发明授权
    Seal assembly to seal end gap leaks in gas turbines 有权

    公开(公告)号：US10138747B2

    公开(公告)日：2018-11-27

    申请号：US15418707

    申请日：2017-01-28

    Applicant: General Electric Company

    Inventor： Bodhayan Dev ,  Neelesh Nandkumar Sarawate

    IPC: F01D11/00 ,  F01D9/04 ,  F16J15/02

    Abstract: Various embodiments include gas turbine seals and methods of forming such seals. In some cases, a turbine includes: a first arcuate component adjacent to a second arcuate component, each arcuate component including one or more slots having a seal assembly disposed therein. The seal assembly including an intersegment seal including a plurality of seal segments defining one or more end regions. One or more of the plurality of seal segments including at the one or more end regions a plurality of jet holes and a channel having a wire disposed therein, wherein the intersegment seal provides sealing of one or more end gaps defined proximate the one or more end regions in response to the thrust of a flow of pressurized air through the plurality of jet holes.

    Flexible layered seal for turbomachinery
    44.
    发明授权
    Flexible layered seal for turbomachinery 有权

    公开(公告)号：US10047622B2

    公开(公告)日：2018-08-14

    申请号：US14337453

    申请日：2014-07-22

    Applicant: General Electric Company

    Inventor： Neelesh Nandkumar Sarawate ,  Victor John Morgan ,  David Wayne Weber

    IPC: F01D11/00 ,  F16J15/02 ,  F16J15/08

    Abstract: The present application provides seal assemblies having improved flexibility for reducing leakages between adjacent misaligned components of turbomachinery. The seal assemblies include a first outer shim formed of a flexible permeable material and a second outer shim formed of a substantially impervious material. At least the second outer shim is configured for sealing engagement with seal slots of the adjacent components. The seal assemblies may also include at least one of an inner shim and a filler layer positioned between the first and second outer shims. The seal assemblies may be sufficiently flexible to account for misalignment between the adjacent components, sufficiently stiff to meet assembly requirements, and sufficiently robust to meet operating requirements associated with turbomachinery. A turbomachine including the seal assembly is provided.

    CENTRIFUGALLY ACTIVATABLE SEAL FOR A ROTARY MACHINE AND METHOD OF ASSEMBLING SAME
    48.
    发明申请
    CENTRIFUGALLY ACTIVATABLE SEAL FOR A ROTARY MACHINE AND METHOD OF ASSEMBLING SAME 审中-公开

    公开(公告)号：US20180058241A1

    公开(公告)日：2018-03-01

    申请号：US15248161

    申请日：2016-08-26

    Applicant: General Electric Company

    Inventor： Neelesh Nandkumar Sarawate ,  Deepak Trivedi ,  Xiaoqing Zheng

    IPC: F01D11/08 ,  F01D5/02 ,  F01D9/02

    Abstract: A seal for a rotary machine includes a flexible element extending circumferentially about a rotating component and extending generally radially from a first end to a free second end. The flexible element is coupled proximate the first end for rotation with the rotating component. The seal also includes a retaining plate having a stop face that orients the flexible element at a first angle when the rotating component is operating at less than a critical speed and under the including of pressure loading, such that a clearance gap is defined between the free second end and a stationary component. The flexible element extends at substantially a second angle when the rotating component is operating at a speed greater than the critical speed, such that the flexible element forms a dynamic seal between the rotating component and the stationary component.

    Seals with a thermal barrier for turbomachinery
    50.
    发明授权
    Seals with a thermal barrier for turbomachinery 有权

    公开(公告)号：US09850772B2

    公开(公告)日：2017-12-26

    申请号：US14695288

    申请日：2015-04-24

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： Neelesh Nandkumar Sarawate ,  Edip Sevincer ,  Anthony Marin

    IPC: F01D25/00 ,  F01D11/00

    CPC classification number: F01D11/005 ,  F01D25/005 ,  F05D2300/6033

    Abstract: Seal assemblies for reducing leakage between components of turbomachinery include a metallic shim, at least a pair of non-metallic end blocks, and ceramic fiber positioned between the shim and the end blocks. The shim may be mechanically coupled with the end blocks such that the metallic shim, end blocks and ceramic fiber are coupled. The end blocks account for misalignment of turbine components by ensuring sealing engagement of the seal to the components. The end blocks may be a ceramic or glass material, and the ceramic fiber may be a high temperature woven ceramic fiber. The ceramic fiber and/or the end blocks protect the metallic shim from reaching harmful temperatures during use of the seal, such as use in high temperature turbines including CMC components.

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