抽油机井杆柱系统防偏磨装置设计与优化

Design and Optimization of Anti-eccentric Device for Rod String System in Pumping Wells

针对油田开采过程中抽油机井杆柱系统偏磨问题,设计了一种抽油机井杆柱系统防偏磨装置。该装置安装在悬绳器上板的位置,利用悬点上下运动过程中势能与动能的转换提供动力,通过超越离合器的作用使重锤只在自下而上摆动时带动蜗轮蜗杆传动,以实现抽油机杆柱系统单向间歇性转动。该装置不仅能防止杆柱系统偏磨、防止抽油杆脱扣,还不必外加动力源,减小了装置的体积。利用ADAMS软件对整个装置进行了动力学仿真,验证了其工作原理及结构设计的合理性;对关键部件进行了优化设计,提高了装置的可靠性,延长了其使用寿命。仿真数据分析表明:该装置可以实现杆柱系统的单向间歇性转动,其主要部件蜗轮蜗杆在仿真过程中传动良好,无较大冲击。所得结论可为新型抽油机杆柱系统防偏磨装置的理论研究和现场应用提供借鉴。

To address the eccentric wear of the rod string system in the production,an anti-eccentric device for rod string system in pumping wells is designed. The device is installed on the upper plate of the beam hanger,and uses the conversion of potential energy and kinetic energy during the up and down movement of the polished rod to provide power. The worm and gear is driven by the overrunning clutch when the weight swings from bottom to top,so as to realize the one-way intermittent rotation of the rod string system. The device prevents the eccentric wear of rod string system and rod tripping without additional power source,which reduces the volume of the device.The ADAMS software is used to simulate the dynamics of the whole device to verify the rationality of its working principle and structural design. The key components are optimized to improve the reliability of the device and prolong the service life. The simulation data analyses show that the device can realize one-way intermittent rotation of the rod string system. The key components the worm and gear have a smooth transmission during the simulation process without great impacts. The study can provide references for the theoretical research and field application of novel anti-eccentric device for the rod string system in pumping wells.