Rotor and stator assembly configured as an aspirating face seal
    1.
    发明授权
    Rotor and stator assembly configured as an aspirating face seal 失效
    转子和定子组件配置为吸气面密封

    公开(公告)号:US5975537A

    公开(公告)日:1999-11-02

    申请号:US958245

    申请日:1997-10-27

    IPC分类号: F16J15/40 F16J15/44

    CPC分类号: F16J15/40 F16J15/443

    摘要: A rotor and stator assembly having a rotor and a stator with opposing surfaces defining an air bearing and an air dam of an aspirating face seal. In a first embodiment, the air bearing and the air dam are axially offset. In a second embodiment, the rotor has an axially extending protuberance located radially between the air bearing and the air dam. The axial offset and the protuberance each act to divert the air flow (e.g., compressed gas or combustion gases in a gas turbine or steam in a steam turbine) in a direction transverse to the air flow direction through the air bearing and the air dam, thus isolating the air flows from the air bearing and the air dam which improves seal performance.

    摘要翻译: 具有转子和定子的转子和定子组件具有限定空气轴承的相对表面和吸气面密封件的空气坝。 在第一实施例中,空气轴承和空气坝被轴向偏移。 在第二实施例中,转子具有径向位于空气轴承和空气坝之间的轴向延伸突起。 轴向偏移和突起各自起作用以使空气流(例如,蒸汽轮机中的燃气轮机中的压缩气体或燃烧气体或蒸汽涡轮机中的蒸汽)沿与空气轴承和空气坝的空气流动方向横切, 从而隔离空气轴承和空气坝的空气流,从而提高密封性能。

    Brush seal for use on bumpy rotating surfaces
    2.
    发明授权
    Brush seal for use on bumpy rotating surfaces 失效
    刷子密封用于颠簸的旋转表面

    公开(公告)号:US5941685A

    公开(公告)日:1999-08-24

    申请号:US950082

    申请日:1997-10-14

    IPC分类号: F01D11/00 F16J15/32 F01D11/08

    摘要: A brush seal which, among other applications, may be used for sealing a steam leakage gap between the shrouded free end of steam-turbine buckets of a steam-turbine rotor and a circumferentially surrounding steam-turbine stator. In a first embodiment, an unflexed brush seal includes bristles having a generally straight first portion secured to a backing plate and a coextensive and generally straight second portion with a free end. The second portion makes a greater angle, than that of the first portion, with respect to a directed reference line. In a second embodiment, the first and second portions are curved, wherein a tangent line to the second portion makes a greater angle than a tangent line to the first portion.

    摘要翻译: 除了其它应用之外,可以使用刷密封件,其用于密封蒸汽涡轮机转子的蒸汽涡轮机叶片的被覆盖的自由端与周向周围的汽轮机定子之间的蒸汽泄漏间隙。 在第一实施例中,非弯曲的刷子密封件包括具有固定到背板的大致直的第一部分和具有自由端的共同延伸且大致直的第二部分的刷毛。 与第一部分相比,第二部分相对于定向参考线具有更大的角度。 在第二实施例中,第一和第二部分是弯曲的,其中与第二部分相切的切线比与第一部分的切线更大的角度。

    Spring system designs for active and passive retractable seals
    6.
    发明授权
    Spring system designs for active and passive retractable seals 有权
    主动和被动可伸缩密封件的弹簧系统设计

    公开(公告)号:US08113771B2

    公开(公告)日:2012-02-14

    申请号:US12408236

    申请日:2009-03-20

    摘要: A spring assembly for a retractable turbine rotor seal supported in an arcuate segment may include in one embodiment a first radially inner restraining plate having a lower surface adapted to engage a surface of a turbine stator, and a flat upper surface provide with an upstanding hub; a second radially outer restraining plate having a flat lower surface and an upper surface adapted to engage a surface of the arcuate segment, the radially outer restraining plate formed with an opening receiving the upstanding hub; and at least one spring telescoped over the upstanding hub and exerting a radially outward biasing force on the second radially outer restraining plate, and adapted to exert a radially outward retracting force on the arcuate segment.

    摘要翻译: 支撑在弧形段中的用于可伸缩涡轮机转子密封件的弹簧组件可以包括在一个实施例中,第一径向内部约束板具有适于接合涡轮机定子的表面的下表面,并且平坦的上表面提供直立的毂; 第二径向外约束板,其具有平坦的下表面和适于接合所述弓形段的表面的上表面,所述径向外限制板形成有接收所述直立毂的开口; 并且至少一个弹簧套叠在直立毂上并在第二径向外限制板上施加径向向外的偏置力,并且适于在弓形段上施加径向向外的缩回力。

    Compliant plate seals for turbomachinery
    8.
    发明授权
    Compliant plate seals for turbomachinery 有权
    符合涡轮机械的板式密封件

    公开(公告)号:US07651101B2

    公开(公告)日:2010-01-26

    申请号:US11871501

    申请日:2007-10-12

    IPC分类号: F16J15/447

    摘要: A shaft seal serves to reduce leakage between a rotating shaft and a static shell. The shaft seal includes a plurality of compliant plate members, each having a root and a tip. The compliant plate members are secured to the static shell at their root in facing relation. The tips of the compliant plate members define a sealing ring between the static shell and the rotating shaft. An axial flow resistance member is disposed within the compliant plate members and serves as a barrier to axial leakage flow between the compliant plate members.

    摘要翻译: 轴密封件用于减少旋转轴和静态外壳之间的泄漏。 轴封包括多个柔性板构件,每个具有根部和尖端。 柔性板构件在其根部处以面对关系固定到静态壳体上。 柔性板构件的尖端在静态壳和旋转轴之间限定密封环。 轴向阻力构件设置在柔性板构件内并用作在柔性板构件之间的轴向泄漏流动的障碍。

    Shaft seal formed of tapered compliant plate members
    10.
    发明申请
    Shaft seal formed of tapered compliant plate members 审中-公开
    轴密封由锥形柔性板构件形成

    公开(公告)号:US20080107525A1

    公开(公告)日:2008-05-08

    申请号:US11591567

    申请日:2006-11-02

    IPC分类号: F04D29/10 F16J15/16

    CPC分类号: F16J15/3292

    摘要: A shaft seal reduces leakage between a rotating shaft and a stator. The shaft seal includes a plurality of plate members attached to the stator in facing relation. The plate members define a sealing ring between the stator shell and the rotating shaft. A thickness of the plate members tapers from thick to thin from a stator end to a rotating shaft end. In this manner, with the more tightly packed tips of the plate members, axial leakage is reduced by tapering the plate members so that the plate roots are thicker than the plate tips.

    摘要翻译: 轴封可减少旋转轴和定子之间的泄漏。 轴封包括以面对关系附接到定子的多个板构件。 板构件在定子壳和旋转轴之间限定密封环。 板构件的厚度从定子端到旋转轴端从厚到浅逐渐变细。 以这种方式,随着板构件的更紧密堆积的尖端,通过使板构件逐渐变细使得板根比板尖更厚而减小轴向泄漏。