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    Method and apparatus for eliminating thermal bowing of steam turbine rotors
    3.
    发明授权
    Method and apparatus for eliminating thermal bowing of steam turbine rotors 失效
    用于消除汽轮机转子热弯的方法和装置

    公开(公告)号：US06168377A

    公开(公告)日：2001-01-02

    申请号：US09238257

    申请日：1999-01-27

    申请人： Christopher Edward Wolfe ,  Frederick George Baily ,  Lawrence Edward Rentz ,  Alexander Morson ,  Norman Arnold Turnquist ,  Paul Thomas Marks ,  Roger Jordan Carr

    发明人： Christopher Edward Wolfe ,  Frederick George Baily ,  Lawrence Edward Rentz ,  Alexander Morson ,  Norman Arnold Turnquist ,  Paul Thomas Marks ,  Roger Jordan Carr

    IPC分类号： F01D1100

    CPC分类号： F01D11/001 ,  F16J15/3288

    摘要： Brush seals are employed on steam turbine rotors without the risk of causing thermal rotor bowing and without compromising the sealing performance. In one form, a groove in the rotor has an insert in frictional contact with the brush seal. The non-uniform distribution of heat due to frictional contact between the brush seal and proud portions of the rotor is dissipated within the insert such that adjoining rotor portions are substantially uniformly heated without causing thermal bow. In a further form, a groove or grooves are provided in the rotor surface adjacent to the brush seal and maintain non-uniform heat distribution locally in the rotor without causing thermal bow of the rotor. In another form, a land projects radially outwardly of the rotor surface in contact with the brush seal. The non-uniform distribution of heat due to frictional contact between proud portions of the land and the brush seal dissipates into a uniform distribution of heat in the rotor proper to avoid thermal bowing. In a final form, the brush seal has frictional contact with bucket dovetail or wheel protrusions spaced radially outwardly of the rotor such that non-uniform distribution dissipates into a uniform distribution within the rotor.

    摘要翻译： 汽轮机转子上使用刷子密封件，而不会导致热转子弯曲并且不影响密封性能。 在一种形式中，转子中的槽具有与刷密封件摩擦接触的插入件。 由于刷子密封件和转子的骄人部分之间的摩擦接触引起的热量的不均匀分布在插入件内消散，使得相邻的转子部分基本均匀地加热而不引起热弓。 在另一种形式中，在转子表面中设置有与刷子密封件相邻的凹槽或槽，并且在转子中局部地保持不均匀的热分布，而不会导致转子的热弓。 在另一种形式中，一个脊面与转子表面径向向外突出地与刷子密封接触。 由于陆地骄傲部分和刷子密封件之间的摩擦接触导致的热量的不均匀分布在转子中散发成均匀的热分布，以避免热弯曲。 在最终形式中，刷子密封件与铲斗的燕尾榫摩擦接触或轮毂径向向外偏离转子，使得不均匀的分布在转子内消散成均匀的分布。

    Arrangement and method for accurately radially locating a turbine brush seal
    4.
    发明授权
    Arrangement and method for accurately radially locating a turbine brush seal 失效
    涡轮刷密封的精确径向定位的布置和方法

    公开(公告)号：US06261057B1

    公开(公告)日：2001-07-17

    申请号：US09412072

    申请日：1999-10-04

    申请人： Norman Arnold Turnquist ,  Frederick George Baily ,  Lawrence Edward Rentz

    发明人： Norman Arnold Turnquist ,  Frederick George Baily ,  Lawrence Edward Rentz

    IPC分类号： F01D500

    CPC分类号： F16J15/3288 ,  F16J15/442 ,  F16J15/445

    摘要： An arrangement and method for accurately radially locating a brush seal relative to a rotor provides a labyrinth seal segment having a slot open toward the rotor and defining an interior ledge facing away from the rotor, a brush seal segment inserted in the slot and having an exterior shoulder facing toward the rotor and overlying the interior ledge of the labyrinth seal segment such that the brush seal segment can move radially relative to the labyrinth seal segment and rotor and the shoulder of the brush seal segment can move toward and away from the interior ledge of the labyrinth seal segment, and set screws tightened into spaced apart threaded holes in the labyrinth seal segment forcing the shoulder of the brush seal segment against the ledge of the labyrinth seal segment so as to prevent radial floating of the brush seal segment relative to the labyrinth seal segment.

    摘要翻译： 用于相对于转子精确地径向定位刷子密封件的布置和方法提供了一种迷宫式密封件，其具有朝向转子敞开的狭槽，并限定了背向转子的内部凸缘，插入槽中的刷子密封件段 肩部朝向转子并且覆盖迷宫式密封段的内部凸缘，使得刷密封段可相对于迷宫式密封段和转子径向移动，并且刷式密封段的肩部可以朝向和远离内部凸缘 迷宫式密封段和固定螺丝拧紧在迷宫密封段中的间隔开的螺纹孔中，迫使刷子密封段的肩部抵靠迷宫式密封段的凸缘，以防止刷密封段相对于迷宫的径向漂浮 密封段。