抽油机连杆的力学分析及结构改进
Mechanical Analysis and Structure Improvement of Connecting Rods in Oil Pumping Unit
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- 引用格式:
-
何,畏,王向涛,孙,宇,王钰文.抽油机连杆的力学分析及结构改进[J].天然气与石油,2013,31(3):0.doi:
.Mechanical Analysis and Structure Improvement of Connecting Rods in Oil Pumping Unit[J].Natural Gas and Oil,2013,31(3):0.doi:
- DOI:
- 作者:
- 何 畏 王向涛 孙 宇 王钰文
- 作者单位:
- 西南石油大学机电工程学院
- 关键词:
- 抽油机；连杆；断裂；有限元；裂纹控制；再制造
Oil pumping unit； Connecting rod； Fracture； Finite element； Cracking control； Remanufacturing
- 摘要:
- 目前，我国油田闲置的异五型抽油机较多，由于本身结构设计存在缺陷且服役时间较长，其驴头、连杆等部位多出现裂纹或断裂。使用再制造技术对闲置的异五型抽油机进行结构改造，能够修旧利废，节约成本。因采用常规校核方法难以对连杆的连接部位进行计算，故运用有限元软件ANSYS对连杆原结构进行分析。分析发现原设计并不合理，连杆接头与中间管的连接处存在较大的应力集中。针对抽油机连杆存在应力集中、经常断裂的问题，提出了相应的改进措施，经过软件计算和实际检验，改进后的连杆效果良好。
At present， there are many idle five-type oil pumping units in oil fields， structural design defects and long time operation of such units result in some cracks or fractures in horse heads， connecting rods and other parts of the units. Application of remanufacturing technology in reconstructing the units can repair the old and utilize the waste and reduce costs. Conventional checking method is difficult to calculate the parameters of joint parts in connecting rods. Applied is the finite element software ANSYS to analyze the original structure of connecting rods and it is found that the original design is unreasonable and major stress concentration exist in the joint part between the connecting rod joint and intermedium tube. In view of such problems， proposed are improvement measures， and through software calculation and actual inspection， the effect of the improved connecting rods is good.
