High compressor exit guide vane assembly to pre-diffuser junction

    公开(公告)号:US10161414B2

    公开(公告)日:2018-12-25

    申请号:US14935628

    申请日:2015-11-09

    Abstract: A pre-diffuser and exit guide vane (EGV) system for a gas turbine engine includes an annular EGV assembly containing a number of guide vanes and having an annular opening bounded by a radially inner annular sealing surface at a first radius and a radially outer annular sealing surface at a second radius. First and second seals substantially matching the first and second radii respectively join the EGV assembly to an annular pre-diffuser having an annular opening bounded by radially inner and outer annular sealing surfaces at substantially the first and second radii. The seals seal the inner sealing surface of the EGV assembly to the inner sealing surface of the pre-diffuser and the second seal seals the outer sealing surface of the EGV assembly to the outer sealing surface of the pre-diffuser, such that the EGV assembly annular opening is in fluid communication with the annular opening of the pre-diffuser.

    Vibration Damping Apparatus for Hydrostatic Seal of Gas Turbine Engine
    16.
    发明申请
    Vibration Damping Apparatus for Hydrostatic Seal of Gas Turbine Engine 审中-公开
    燃气轮机发动机静压密封振动阻尼装置

    公开(公告)号:US20160069269A1

    公开(公告)日:2016-03-10

    申请号:US14766192

    申请日:2013-12-18

    Abstract: A hydrostatic seal and vibration damping apparatus for a gas turbine engine adapted to reduce vibrations during cold engine start-ups is disclosed. In one disclosed configuration, the vibration damping apparatus is comprised of a temperature sensitive control ring having a relatively high coefficient of thermal expansion adapted to expand quickly at relatively low temperatures to protect the hydrostatic seal during such gas turbine engine startups. At operational temperatures, the control ring is adapted to become separated from the hydrostatic sea.

    Abstract translation: 公开了一种适用于减少发动机冷启动时的振动的用于燃气涡轮发动机的液压密封和减振装置。 在一个公开的结构中,减振装置由具有相对高的热膨胀系数的温度敏感控制环组成,适于在较低温度下迅速膨胀以在这种燃气涡轮发动机起动期间保护静水压密封。 在操作温度下,控制环适于与静水压海相分离。

    Flange heat shield
    18.
    发明授权

    公开(公告)号:US10519811B2

    公开(公告)日:2019-12-31

    申请号:US15284763

    申请日:2016-10-04

    Abstract: A flange heat shield is provided. The flange heat shield may comprise an annular body having a forward end opposite an aft end. The forward end of the flange heat shield may comprise a radial snap configured to interface with an inner surface of an engine case. The inner surface of the engine case may comprise an airflow ramp forward of the radial snap. The aft end of the flange heat shield may comprise a plurality of notches defining voids on the aft end. The aft end of the flange heat shield may also comprise mounting tabs configured to couple the flange heat shield to the engine case.

    ENGINE CASES AND ASSOCIATED FLANGE
    20.
    发明申请

    公开(公告)号:US20180230856A1

    公开(公告)日:2018-08-16

    申请号:US15297459

    申请日:2016-10-19

    Abstract: Aspects of the disclosure are directed to a system for an engine having an axial centerline, comprising: a diffuser case, a turbine case, and a turbine vane support, where the diffuser case and the turbine case are coupled to one another via a substantially radially oriented flange, where the turbine vane support includes a heat shield for the flange, and where the turbine vane support includes a radially outward projecting tab that couples to the turbine case via a radial interference fit.

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