螺杆钻具瓣形万向轴瓣齿压扭组合强度分析  

Strength Analysis of Pressure and Torsion Combination Loads of Flapper Teeth of LTC

作　　者：屈文涛[1] 高晓刚[1] 孟栋轩[2] 路玥[1] 

机构地区：[1]西安石油大学机械工程学院,陕西西安710065 [2]长庆油田公司机械制造总厂,陕西西安710201

出　　处：《石油钻探技术》2009年第1期65-68,共4页Petroleum Drilling Techniques

基　　金：陕西省自然科学基础研究计划项目“单螺杆式水力机械转子线型几何理论研究”(编号:SJ08A29)部分研究成果

摘　　要：瓣形万向轴是连接螺杆马达转子和传动轴的中间构件,也是螺杆钻具的易失效件之一。针对瓣形万向轴常见的失效形式,结合实际工况,对瓣形万向轴承受轴向压力和扭转组合载荷时瓣齿的受力特征进行了分析,讨论了瓣形万向轴的两种主要失效形式,并分析了啮合位置参数对万向轴失效形式的影响。最后应用ANSYS分析软件对瓣形万向轴承受压扭组合载荷时瓣齿的强度进行了校核,校核结果与理论分析结果基本一致,为今后瓣形万向轴的结构设计和强度校核提供了理论依据。LTC （Lobe-Type-Couplings） is an intermediate component which connects the screw motor rotor and the drive shaft,and also is one of easiest failure parts of PDM （Positive Displacement Motor）. According to the common failure forms of LTC, the stress characteristics of LTC was analyzed when it is subjected to pressure and torsion combination loads, the two main failure forms of flapper teeth and the impact of the meshing location parameters of flapper teeth on failure forms are analyzed. Using ANSYS software, the finite element analysis of flapper teeth strength under combination loads of pressure and torsion is performed. The calculated results agree with experimental results. The analysis method provides theoretical references for structure design and strength calibration of LTC in the future.

关 键 词：螺杆钻具 万向轴 压扭载荷 有限元法 

分 类 号：TE921.2[石油与天然气工程—石油机械设备]