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    • 4. 发明授权
    • Self-centering brush seal
    • 自定心刷密封
    • US06168162A
    • 2001-01-02
    • US09129335
    • 1998-08-05
    • George Ernest ReluzcoDonald Ernest WoodmanseeOsman Saim DincNorman Arnold TurnquistChristopher Edward Wolfe
    • George Ernest ReluzcoDonald Ernest WoodmanseeOsman Saim DincNorman Arnold TurnquistChristopher Edward Wolfe
    • F16J1102
    • F16J15/3288Y10S277/926
    • A self-centering brush seal is disposed in an annular groove formed in a stationary component about a rotatable component, the stationary and rotatable components having a common axis. The brush seal includes a plurality of bristles projecting into sealing engagement with the rotating component. The brush seal has a radial clearance in the groove enabling the brush seal for free-floating radial excursions within the groove to maintain concentricity with the rotary component notwithstanding deviation of the axis of rotation of the rotating component relative to the axis of the fixed component. In another form, the brush seal comprises a plurality of arcuate segments having a helical coil spring biasing the segments for radial movement enabling the tips of the bristles to seal against the rotatable component. In a further embodiment, leaf springs bias each segment to maintain its bristles in engagement with the rotatable component. In a still further embodiment, the seal segments are pressure balanced in a radial direction with an O-ring seal sealing high and low pressure regions on opposite sides of the segments.
    • 自定心刷密封件设置在围绕可旋转部件形成在固定部件中的环形槽中,固定和可旋转部件具有公共轴线。 刷密封包括突出成与旋转部件密封接合的多个刷毛。 刷密封件在槽中具有径向间隙,使得刷密封件能够在凹槽内自由浮动的径向偏移,以保持与旋转部件的同心度,尽管旋转部件的旋转轴线相对于固定部件的轴线的偏离。 在另一种形式中,刷子密封件包括多个弧形段,其具有螺旋螺旋弹簧,所述螺旋弹簧偏置所述段用于径向移动,使得刷毛的尖端能够密封抵靠可旋转部件。 在另一实施例中,板簧对每个片段进行偏置以保持其刷毛与可旋转部件接合。 在又一个实施例中,密封段在径向方向上被压力平衡,O形环密封件密封了段的相对侧上的高压区域和低压区域。
    • 7. 发明授权
    • Anti-hysteresis brush seal
    • 抗滞后刷密封
    • US5961280A
    • 1999-10-05
    • US928114
    • 1997-09-12
    • Norman Arnold TurnquistChristopher Edward WolfeOsman Saim Dinc
    • Norman Arnold TurnquistChristopher Edward WolfeOsman Saim Dinc
    • F16J15/32F04D29/08
    • F16J15/3292
    • A brush seal which, among other applications, may be used for sealing a steam leakage gap between a steam turbine rotor and a steam turbine casing. A brush seal backing plate has a surface which includes adjacent first and second areas. First and second bristle packets contact and generally cover, respectively, the first and second areas. A first anti-hysteresis plate is positioned between and contacts the first and second bristle packets, is aligned generally perpendicular to the backing plate, and is proximate and generally spaced apart from the backing plate. The anti-hysteresis plate restores the bristles which would otherwise become set in a non-sealing position against the backing plate because of transient events such as thermal differential growth or relative movement of the rotor and casing.
    • 除了其它应用之外,刷密封可用于密封蒸汽涡轮机转子和汽轮机壳体之间的蒸汽泄漏间隙。 刷密封背板具有包括相邻的第一和第二区域的表面。 第一和第二刷毛包分别接触并通常分别覆盖第一和第二区域。 第一抗滞后板定位在第一和第二刷毛包之间并且与第一和第二刷毛包接触,大体上垂直于背板排列,并且与背板接近并且大体间隔开。 抗滞后板恢复刷毛,否则由于瞬时事件(例如热差增长或转子和壳体的相对运动)而将背对板设置在非密封位置。