机械动力学:2017,Vol:36,Issue(9):1333-1339
引用本文:
田家林, 吴纯明, 杨琳, 刘刚, 杨志, 袁长福. 扭转振动发生器的工作原理及其运动特性分析[J]. 机械科学与技术
Tian Jialin, Wu Chunming, Yang Lin, Liu Gang, Yang Zhi, Yuan Changfu. Research on Operation Principle and Kinematics of Torsional Vibration Generator[J]. Journal Of Remote Sensing

扭转振动发生器的工作原理及其运动特性分析
田家林1,2, 吴纯明1, 杨琳1, 刘刚1, 杨志1, 袁长福1
1. 西南石油大学机电工程学院, 成都 610500;
2. 西南交通大学机械工程学院, 成都 610031
摘要:
针对某些地区地层研磨性强,可钻性差,机械钻速低的技术难点,提出了一种扭转振动发生器。通过对发生器结构和工作原理的分析,建立其运动学模型,推导出液压锤的碰撞周期、转动角速度、转动角位移的表达式;结合算例参数得到液压锤的碰撞周期、转动角速度、转动角位移随时间的变化关系,以及入口流量、入口压强对其三者的影响;最后,通过室内实验验证了计算方法的可靠性与准确性。结果表明:液压锤碰撞周期与入口压强成反比,与入口流量成正比;其角速度及角位移随入口流量的增大而减小,随入口压强的增大而增大。
关键词:    钻井    井下工具    运动学    扭转振动    粘滑   
Research on Operation Principle and Kinematics of Torsional Vibration Generator
Tian Jialin1,2, Wu Chunming1, Yang Lin1, Liu Gang1, Yang Zhi1, Yuan Changfu1
1. School of Mechanical Engineering, Southwest Petroleum University, Chengdu 610500, China;
2. School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, China
Abstract:
Aiming at the technical difficulties of strong abrasion resistance, poor drillability and low rate of penetration of the stratum, a torsional vibration generator is designed. According to the structure and operating principle of the torsional vibration generator, its kinematics and mathematical models are established. The expression of the collision period, angular velocity, angular displacement of the hydraulic hammer are derived, and the variation relationships of these parameters with respect to time are obtained with the aid of numerical examples, and the effect of the inlet pressure and inlet flow on them are also achieved. The accuracy and reliability of the calculation method are verified by experiments. The results show that its collision period increases with the inlet flow and decreases with the inlet pressure. With the increasing of inlet pressure and the decreasing of inlet flow, the angular velocity and angular displacement of the hydraulic hammer are increased.
Key words:    angular velocity    calculations    computational geometry    collision    design    experiments    mathematical models    mechanical properties    models    pressure    vibrations   
收稿日期: 2016-06-05     修回日期:
DOI: 10.13433/j.cnki.1003-8728.2017.0904
基金项目: 国家自然科学基金项目(51674216)、国家科技重大专项项目(2016ZX05038)及国家留学基金项目(201608515039)资助
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作者简介: 田家林(1979-),副教授,博士,研究方向为井下工具、钻井动力学及理论研究,tianjialin001@gmail.com
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