【作者】 吴卿宇；

【导师】 张军；

【作者基本信息】 大连理工大学 ， 精密仪器及机械， 2012， 硕士

【摘要】 水泵被广泛用于当代社会的各个行业中,是应用最为普遍的机械装置之一,其性能的优劣往往起到决定性作用。水泵主轴性能是评判水泵整体性能的关键,轴向力则是影响主轴性能的一个主要因素,对其进行实时监测,能够为泵叶轮、轴向力平衡装置的研发提供准确参数,为评定水泵工作状态提供可靠依据,从而有效提高水泵整体性能。针对水泵主轴结构及其轴向力特性,研制出一种压电式水泵轴向力测力仪。采用测力仪位于泵腔内部的测力方式,通过轴承解决转子回转与测力仪相对静止的矛盾关系,实现轴向力测量。测力仪内部采用四传感器,以菱形结构,均匀布置于同一圆周上的分布方式,做为测力核心,测力范围为：0～32000N。运用ANSYS Workbench软件对压电式水泵轴向力测力仪结构参数进行优化,选择最佳结构参数,使测力仪具备最优性能。设计静、动态标定装置模拟实测环境,对测力仪进行静、动态实验,实验结果显示,测力仪各项性能均达到设计要求。对测力仪进行现场测试,测试结果表明其性能良好,能够实时准确检测转子轴向力,测试性能真实可靠。更多还原

【Abstract】 Pumps are widely used in various industries now. They are one of the most widely used mechanical devices. The performances of them often play a decisive role. The property of spindle in it is the key to judge the performance of the whole pump, meanwhile axial force is one of the main factors that affect the performance of spindle. It can provide accurate parameter for the design of spindle and the research of balance device for axial force by real-time monitoring of axial force. It can also provide a reliable basis for the assessment to pump in working state so as to effectively improve the overall performance of it.According to the characteristics of the structure of spindle and the axial force on it, a kind of piezoelectric dynamometer applying in detecting axial force of spindle in pump is developed. Make a measurement with the dynamometer in pump. Resolve the contradictory relationship between the rotation of spindle and the relatively static of dynamometer in order to achieve the measurement.There are four sensors in diamond-shaped distribution in the dynamometer on the same circle. Measurement range:0-320000N.Optimize the structural parameters of dynamometer using ANS YS Workbench software, select the optimal structural parameters in order to make the dynamometer have best performance.Set up a calibrating device to simulate the real environment of the measurement to force for static calibration and dynamic calibration. The results of experiments show that the dynamometer meet the stiffness requirements. It has good static and dynamic characteristics, high sensitivity, linearity, repeatability, the dynamometer has a good stability, that the performance has met the expected designing specifications. Make the dynamometer a field testing, the results show that it has a good performance. The dynamometer can accurately detect the rotor axial force in real time, truly and reliably.更多还原