毕业设计（论文)折梁式抽油机运动学分析及结构设计.doc

PAGE 折梁式抽油机运动学分析及结构设计摘 要： 针对游梁式抽油机系统的效率低、能耗大、平衡性能差等缺点，开展对新型抽油机——折梁式抽油机的研究。折梁式抽油机是由常规游梁式抽油机衍生而来，它有一个后伸并下折的游梁，废弃了钢丝绳而增加了游梁平衡；由于平衡重的多块组合方式，使得平衡重很容易得到增减而方便平衡调节。折梁式抽油机由于平衡效果好，节能显著，适应大型机小泵深抽作业的优点。在本文中，首先设计了折梁式抽油机的整体结构，并对抽油机进行了运动学和动力学分析，得到了悬点速度、加速度和载荷的计算公式。通过和常规纯曲柄平衡抽油机的净扭矩比较，折梁式抽油机的曲柄净扭矩下降了48.9%。最后对抽油机的零部件进行了设计，并绘制了装配图和零件图。关键词：折梁；抽油机；纯曲柄平衡；净扭矩The kinematic analysis of folding beam-pumping unit and its structural designAbstract: Aiming at the problem of low efficiency, high energy consumption ,and poor balance performance, the new type pumping unit - folding beam pumping unit is designed. The folding beam pumping unit is derive from conventional beam pumping unit, which has an extended and folding beam, abandons wire rope and increases the beam balance. The multi-block combination of balance weight makes the balance weight change easily and adjustment convenient. Folding balance beam pumping unit, due to its effective balance, significant energy saving, it can adapt to small pump and deep drawing operations.In this paper, the overall structure of folding beam pumping unit is firstly designed, then the kinematics and dynamics analysis for pumping are made, and speed, acceleration and load formula of polished rod are got. Compared with the conventional pure crank balanced beam pumping unit, the crank net torque of the folding beam pumping unit reduced by 48.9%. Finally, the components of pumping unit is designed, and the assembly and part drawings are plotted.Keywords: The folding ; Pumping unit ; Pure crank balanced ; Net torque 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc295138104 1 绪论 PAGEREF _Toc295138104 \h 1 HYPERLINK \l _Toc295138105 1.1 本文研究意义 PAGEREF _Toc295138105 \h 1 HYPERLINK \l _Toc295138106 1.2 国内外抽油机研究现状趋势 PAGEREF _Toc295138106 \h 1 HYPERLINK \l _Toc295138107 1.2.1 国内抽油机研究现状 PAGEREF _Toc295138107 \h 1 HYPERLINK \l _Toc295138108 1.2.2 国外抽油机研究现状 PAGEREF _Toc295138108 \h 2 HYPERLINK \l _Toc295138109 1.2.3 几种常用抽油机 PAG