钢丝绳抽油杆抽油超冲程分析

Analysis of over-stroke conditions of the wire rope rod

通过对钢丝绳抽油杆和常规钢杆振动模型固有频率的分析,从理论上分析了钢丝绳抽油杆和常规钢杆振动形成谐振(超冲程)的条件;同时讨论了振动阻尼系数对共振的影响关系,从理论上得出了钢丝绳抽油杆在抽油时更易形成超冲程,进而从理论上解释了钢丝绳抽油杆在抽油过程中的泵效较高的事实,进一步解释了当前人们对钢丝绳应用和研究中的一些疑点和难点,为钢丝绳抽油系统的设计和应用提供了重要的理论指导。

The paper theoretically presents conditions under which the wire rope rod resonates through analyzing the inherent vibration frequency of it. At the same time, it discusses the effect of vibration damping coefficient on resonance, and concludes that wire rope rod is easier to form overstroke during production, furthermore,it explains why the pumping efficiency of wire rope rod pumping system is higher and also gives explanation to some questions and puzzles that exist in current research and application of wire rope rod. This paper can provide important theoretical directions for the design and application of wire rope rod.