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1. 发明授权

US06309174B1 Thrust bearing for multistage centrifugal pumps 失效
标题翻译：多级离心泵推力轴承
公开(公告)号：US06309174B1
公开(公告)日：2001-10-30
申请号：US09031446
申请日：1998-02-26
申请人： Eli Oklejas, Jr. , Andrew T. Rensink
发明人： Eli Oklejas, Jr. , Andrew T. Rensink
IPC分类号： F01D300
CPC分类号： F16C32/0692 , F04D1/06 , F04D29/0416 , F05B2240/52
摘要： A pump has a thrust bearing has a casing with an inlet port and a discharge port. A shaft is positioned within the pump. A thrust bearing is coupled to the shaft. A pressure alterable bearing cavity is located within the casing. The pressure alterable cavity allows the axial thrust on the shaft from the impellers to be counteracted. The thrust bearing has an annular seal coupled with respect to the casing disc is coupled to the shaft and positioned adjacent the seal. The seal and the disc have a gap therebetween. A feedback pipe couples the bearing cavity to the inlet port. As the axial thrust acting on the shaft changes, the gap between the seal and the disc also changes. The changing of the gap changes the pressure within the bearing cavity. The disc and thus the shaft are repositioned in response to the change in the bearing cavity pressure change.
摘要翻译：泵具有推力轴承，具有具有入口和排出口的壳体。轴位于泵内。推力轴承联接到轴上。压力可变轴承腔位于外壳内。压力可变腔允许来自叶轮的轴上的轴向推力被抵消。推力轴承具有相对于壳体盘耦合的环形密封件联接到轴并且邻近密封件定位。密封件和盘之间具有间隙。反馈管将轴承腔连接到入口。当作用在轴上的轴向推力改变时，密封件和盘之间的间隙也发生变化。间隙的变化会改变轴承腔内的压力。响应于轴承腔压力变化的变化，盘和因此的轴被重新定位。

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