METHOD AND DEVICE FOR REDUCING AXIAL THRUST IN ROTARY MACHINES AND A CENTRIFUGAL PUMP USING SAME
    2.
    发明公开
    METHOD AND DEVICE FOR REDUCING AXIAL THRUST IN ROTARY MACHINES AND A CENTRIFUGAL PUMP USING SAME 审中-公开
    方法和装置的轴向推力在流机和旋转泵这样的装置

    公开(公告)号:EP1175564A1

    公开(公告)日:2002-01-30

    申请号:EP00923450.1

    申请日:2000-04-18

    Inventor: GANELIN, Boris

    CPC classification number: F04D29/2266 F01D3/00 F04D29/0516

    Abstract: A method and device for reducing or eliminating axial thrust in a rotary machine such as a centrifugal pump or compressor by altering the fluid pressure in a cavity (31) or (32) formed between a rotor (20) and a housing (10). The device contains a disk (40) placed along the rotor (20) for subdividing the fluid in the cavity (32) in such a way that all annular gap leakage flow is channeled and pumped through the space (42) between that disk and the rotor from the center of the pump towards the periphery. As a result, the pressure in the cavity (32) is altered to reduce and control the axial thrust on the rotor (20) which becomes independent of the wear state of the shaft seals (61). In another embodiment, the step of flow subdividing is achieved by providing a set of braking vanes (56) along the periphery of the cavity (31) for reducing the rotational speed of the fluid coming from the cavity as well as from the annular gap and a stationary disk (50) is placed along the interior wall (11) of the housing (10) for directing the radial flow of that fluid towards the center of the pump.

    Abstract translation: 例如离心泵或压缩机通过改变转子和壳体之间形成的空腔中的流体压力:一种用于在旋转机械减少或消除轴向推力的方法和装置。 该装置包含沿转子为细分在空腔中的流体在寻求一种方式做了所有环形设计间隙泄漏流放置在磁盘被引导,并通过转子盘之间的空间泵送并没有从朝向周边的泵的中心。 其结果是,在空腔中的压力被改变,以减少和控制上成为独立的轴密封件的磨损状态的转子的轴向推力。 在另一个实施方式流细分的步骤是通过用于减少从所述腔来的流体的旋转速度提供一组沿该腔室的周边的制动叶片以及从环形设计间隙和一个静止盘沿着放置取得 用于引导流体的径向流动的壳体的内壁做朝向泵的中心。

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