Positive biased packing ring brush seal combination
    1.
    发明授权
    Positive biased packing ring brush seal combination 有权
    正偏压填料环刷密封组合

    公开(公告)号:US06250641B1

    公开(公告)日:2001-06-26

    申请号:US09199730

    申请日:1998-11-25

    IPC分类号: F16J15447

    摘要: Circumferentially extending sealing segments (45) are disposed about a rotary component (16) and have seal face (34) carrying a plurality of labyrinth seal teeth (36) and a brush seal (37). The segments are movable between large and small clearance positions relative to the rotor at start-up and steady-state operating conditions, respectively. In one form, springs (31) bias the segments radially outwardly at start-up and steam pressure displaces the segments to the small clearance positions at steady-state operations. In a further embodiment, springs bias the segment for movement to the small clearance position, the extent of movement being determined by thermal expansion of centering rings mounting the segments to the stationary components.

    摘要翻译: 周向延伸的密封段(45)围绕旋转部件(16)设置并且具有承载多个迷宫式密封齿(36)和刷密封件(37)的密封面(34)。 分段在启动和稳态运行条件下分别相对于转子在大间隙位置和小间隙位置之间可移动。 在一种形式中,弹簧(31)在启动时径向向外偏压节段,并且在稳态操作时,蒸汽压将段移动到小间隙位置。 在进一步的实施例中,弹簧偏置该段用于移动到小间隙位置,移动的程度由通过将段安装到固定部件的定心环的热膨胀来确定。

    Brush seal segment
    2.
    发明授权
    Brush seal segment 失效
    刷子密封段

    公开(公告)号:US6105966A

    公开(公告)日:2000-08-22

    申请号:US131485

    申请日:1998-08-10

    CPC分类号: F16J15/3288

    摘要: A brush seal segment useful, when circumferentially arrayed with other such segments, to seal the gap between a rotor and a surrounding casing of a rotary machine such as a steam turbine. An annular backing plate has a rim radially-inwardly bounding together upstream-facing and downstream-facing surfaces. Canted bristles abut the upstream-facing surface. The rim is designed to allow the bristles to recover from a rotor rub. In one design, the rim acts as a labyrinth-seal tooth and is shaped to deform, under a radial force, longitudinally away from the upstream-facing surface. In another design, the rim has a more-inwardly projecting second portion near a radially-aligned edge, and only this second portion acts as a labyrinth-seal tooth.

    摘要翻译: 当用其它这种部分周向排列时,用于密封旋转机器(例如蒸汽轮机)的转子和周围壳体之间的间隙的刷密封段是有用的。 环形背板具有径向向内限定在一起的面向上游和下游的表面的边缘。 鬃毛紧靠着面向上游的表面。 轮辋旨在使刷毛从转子摩擦中恢复。 在一种设计中,轮辋用作迷宫式密封齿并且成形为在径向力作用下纵向远离上游侧表面变形。 在另一种设计中,轮辋在径向对齐的边缘附近具有更向内突出的第二部分,并且仅该第二部分用作迷宫式密封齿。

    Turbine brush seal protection device and method
    4.
    发明授权
    Turbine brush seal protection device and method 失效
    涡轮刷密封保护装置及方法

    公开(公告)号:US06206629B1

    公开(公告)日:2001-03-27

    申请号:US09376835

    申请日:1999-08-18

    IPC分类号: F01D4907

    CPC分类号: F16J15/3288 F16J15/3268

    摘要: A turbine brush seal protection device includes an annular substrate having an outer periphery and defining a slot open at the outer periphery. The slot is for receiving a portion of an annular brush seal of a gas turbine subassembly during installation of a gas turbine and such that the annular substrate at least partially covers the annular brush seal of the gas turbine subassembly. The annular substrate at the outer periphery and within the slot thereof is removably mounted to a stationary portion of the gas turbine subassembly. A turbine brush seal protection method includes the steps of providing the annular substrate, placing the annular substrate over a portion of an annular brush seal of a gas turbine subassembly such that the seal portion is inside the slot of the annular substrate during installation of a gas turbine and the annular substrate at least partially covers the annular brush seal of the gas turbine subassembly, mounting the annular substrate at the outer periphery and within the slot thereof to a stationary portion of the gas turbine subassembly, and removing the annular substrate from the stationary portion of the gas turbine subassembly before completion of installation of the gas turbine subassembly.

    摘要翻译: 涡轮刷密封保护装置包括具有外周边并限定在外周边开口的狭槽的环形基板。 所述槽用于在燃气轮机的安装期间接收燃气轮机子组件的环形刷密封件的一部分,并且使得环形衬底至少部分地覆盖燃气轮机子组件的环形刷密封。 在外周和其槽口内的环形基板可拆卸地安装到燃气轮机组件的固定部分。 涡轮刷密封保护方法包括以下步骤:提供环形基板,将环形基板放置在燃气轮机子组件的环形刷密封件的一部分上,使得密封部分在安装气体期间在环形基板的槽内 涡轮机和环形基板至少部分地覆盖燃气轮机子组件的环形刷密封件,将环形基板安装在外周边并且在其槽内,到燃气轮机子组件的固定部分,并将环形基板从固定件 在完成燃气轮机组件的安装之前,燃气轮机组件的一部分。

    Self-centering brush seal
    7.
    发明授权
    Self-centering brush seal 失效
    自定心刷密封

    公开(公告)号:US06168162A

    公开(公告)日:2001-01-02

    申请号:US09129335

    申请日:1998-08-05

    IPC分类号: F16J1102

    CPC分类号: F16J15/3288 Y10S277/926

    摘要: 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.

    摘要翻译: 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。

    Repositionable brush seal for turbomachinery
    10.
    发明授权
    Repositionable brush seal for turbomachinery 失效
    涡轮机的可重新定位的刷密封

    公开(公告)号:US06382632B1

    公开(公告)日:2002-05-07

    申请号:US09788716

    申请日:2001-02-21

    IPC分类号: F16J15447

    CPC分类号: F16J15/3288

    摘要: A brush seal assembly is radially and axially repositionable relative to stationary and rotating components. Shim packs whose thickness can be reduced by peeling adhesively attached foil layers from the shim packs are used to provide both axial and radial repositioning. In another form, a plurality of set screws may be threaded into a mounting member for the brush seal assembly to controllably space the brush seal from the rotating component. In a further form, an eccentric cam is rotated to reposition the brush seal assembly radially inwardly or outwardly with shim packs being used to reposition the brush seal in an axial direction.

    摘要翻译: 刷密封组件相对于静止和旋转部件径向和轴向地可重新定位。 使用通过从垫片包剥离附着的箔层可以减小其厚度的垫片,以提供轴向和径向重新定位。 在另一种形式中,多个固定螺钉可以拧入用于刷密封组件的安装构件中,以可控地将刷密封件与旋转部件隔开。 在另一种形式中,偏心凸轮被旋转以使刷密封组件径向向内或向外定位,其中垫片用于沿轴向重新定位刷密封件。