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    • 6. 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。