直线电机在油田抽油机上的应用

摘要

This article introduced the structure, working principle, sealing type of tubular permanent magnet linear motor, and emphasized on discussing its application on downhole oil-pumping machine.%介绍了一种圆筒型永磁直线电机的结构形式、工作原理、密封方式，着重阐述了其在油田井下抽油机中的应用。