磁力泵滑动轴承磨损检测

Slide bearing wear monitoring on magnetic drive pump

当磁力泵滑动轴承磨损超过极限,泵旋转部件将与隔离套摩擦,最终磨损隔离套,从而造成严重后果,因此,对滑动轴承磨损检测方法的研究很有必要.由于复杂的结构和密闭空间,磁力泵滑动轴承磨损监测非常具有挑战性.论述了一种简易、低成本的磁力泵滑动轴承磨损检测传感器,由于磁力泵自身的内、外磁钢环和轭铁部件也作为该传感器的一部分,所以传感器只需用一根导线就可以构成.根据磁力泵样机和传感器物理参数,通过理论分析和试验修正得到传感器输出特性曲线和输出函数.最后分别用不偏心和偏心两套滑动轴承在磁力泵上进行了传感器检测可行性试验.结果表明测量值与实际值误差满足监控要求,由该传感器构造的检测系统能够实现磁力泵滑动轴承磨损监测,对提高磁力泵产品的可靠性具有实际应用价值.

When the magnetic drive pump slide bearing wear exceeds its limit,the rotating assembly will rub and eventually breach the containment shell,and will cause serious consequence.Therefore,research of a slide bearing wear monitoring method is necessary.Due to complex structure and confined space,such monitoring is however very challenging.A simple,low-cost magnetic drive pump slide bearing wear sensor was proposed,which was made only of one piece of wire.According to the physical parameters of the pump and the sensor,the feature curve and the output function of the sensor was established by theoretical analysis and experimental correction.Two sets of sliding bearings were adopted on magnetic drive pump for the feasibility experiment with the sensors： one bearing is normal without eccentricity,the other is of eccentricity.The results show that the error between the measured value and the actual value meets the monitoring requirement.So the detection system built by the sensor can conduct magnetic drive pump slide bearing wear monitoring,and has practical value on improving reliability of magnetic drive pump product.