电动机输出扭矩在线检测仪的研制与应用

如何准确测试游梁式抽油机井的地面机械效率是一个难以解决的问题,其主要原因是无法现场在线测试电动机效率。通过电动机扭矩在线检测装置的研制,可动态测量出电动机输出扭矩和转速,方便地计算出电动机输出功率,包括瞬时功率和平均功率。如果同步测量电动机输入功率,可方便计算电动机的机械效率,从而解决了测试抽油机井系统效率时无法准确测试地面效率的问题。现场应用取得了较好的效果,为分析和研究抽油机井系统各节点的能耗情况、提高机采系统效率提供了重要手段。同时,也为准确评价电动机寿命和电动机效率提供了重要手段。

Development and application of on-line detector for motor torque

How to test accurately the ground system efficiency in the rod pumped well is a problem difficult to solve.The main reason is that the motor efficiency can not be tested on-line.Through developing the on-line detector for motor torque,the motor output torque and rotate speed can be dynamically measured on-line.The motor output power,including the instantaneous power and average power can be calculated conveniently.If the motor input power can be measured synchronously,the mechanical efficiency of motor can be calculated conveniently.Consequently,the problem of testing the ground system efficiency can be solved accurately during the efficiency testing in the rod pumped well.The field application has achieved a good effect,which can provide important means for analyzing,researching,improving the efficiency of machine-production system and also can provide important method for accurately evaluating the motor efficiency and life.