膨胀波纹管抗外挤强度的影响因素分析  

Influence Factors Analysis of Expansion Bellows Collapse Resistance Strength

作　　者：李虎[1] 段庆全[1] 朱冰冰[1] 张会会[1] 

机构地区：[1]中国石油大学(北京)机械与储运工程学院,北京102249

出　　处：《焊管》2017年第3期1-4,共4页Welded Pipe and Tube

基　　金：中国石油化工股份有限公司石油工程技术研究院项目"大尺寸膨胀波纹管力学特性分析测试"(项目号10010099-15FW1907-0012)

摘　　要：为了找出影响膨胀波纹管抗外挤强度的影响因素,通过ABAQUS有限元软件对波纹管的抗外挤强度进行模拟,研究了波纹管的不圆度、波纹管的壁厚、井筒直径等对波纹管抗外挤强度的影响。结果表明,不圆度和壁厚对膨胀后波纹管抗外挤强度的影响较大,随着波纹管不圆度的减小,波纹管的抗外挤强度迅速的增大,壁厚越大波纹管的抗外挤强度也越大;另外,增大波纹管应用的井筒直径可以有效的提高波纹管的膨胀性能,降低波纹管膨胀后的不圆度,但是大尺寸的井筒直径降低了波纹管膨胀后的抗外挤强度。In order to find out the influence factors of expansion bellows collapse resistame strength, the ABAQUS finite element soflware was used to simulate the expansion bellows collapse resistance slrength： the ell＇eels of the non-roundness, wall thickness of the bellows and the diameter of the wellbore on the collapse strength of the bellows were studied. The results showed that lhe non-roundness and the wall thickness have a great iniluence on the collapse strength of expansion bellows. With the decrease of the non-roundness of the bellows, the collapse strength of the bellows increases rapidly. The greater the wall thickness of the bellows the greater the collapse strength： In addition, increasing the borehole diameter fro＂ bellows applications ean effectively improve the expansion peormance of bellows and reduce the non-roundness of the bellows after expansion, but the large diameter wellbore reduces the collapse strength of the bellows after expansion.

关 键 词：膨胀波纹管 有限元法 抗外挤强度 不圆度 

分 类 号：TE973.1[石油与天然气工程—石油机械设备]