基于椭圆度卷轴铺设过程矫直质量控制方法研究  

Ellipticity-based Control Method of the Straightening Quality in the Reel Laying Process

作　　者：唐彪[1] 段梦兰[1] 胡显伟 谭双妮[1] 刘振鹏[1] 

机构地区：[1]中国石油大学(北京)海洋油气研究中心 [2]中国石油天然气勘探开发公司

出　　处：《石油机械》2013年第9期48-51,55,共5页China Petroleum Machinery

基　　金：国家863计划项目"水下采油树关键技术研究及成套设备研制(1期)"(2012AA09A205)

摘　　要：由于管道在铺设过程的反复塑性变形,会产生残余应力、残余塑性应变及椭圆度,较大地影响了铺管作业质量。分析得到椭圆度为铺设过程的重要影响因素,结合已有的卷轴铺设残余应变控制法,提出椭圆度与残余应变共同控制法。通过有限元软件建立三维铺设模型,模拟上卷矫直过程应力应变变化规律。对于模拟的管道截面,若以残余应变作为矫直参数,矫直位移150～300mm均符合要求;但是加入椭圆度作为另一个矫直参数,则选择椭圆度1.40%,矫直位移200 mm左右为最佳。该项研究成果为矫直过程的参数选择提供了合理依据,对工程实践具有一定的借鉴意义。Repeated plastic deformation of pipeline in the laying process produces residual stress, residual plas- tic strain and ellipticity, which remarkably affects the quality of pipeline laying. The analysis indicates that elliptici- ty has a remarkable effect on the laying process. Referring to the available control method of reel laying residual strain, the method to control ellipticity and residual strain was put forward. The finite element software was used to establish the three-dimensional laying model. The law of stress and strain variation in the process of roll-up straight- ening was simulated. As for the simulated pipeline cross-section, the 150 -300 mm straightening displacement a- grees with the requirement if the residual strain is taken as the straightening parameter. But, if ellipticity is added as another straightening parameter, then ellipticity is chosen as 1.40%. The straightening displacement of about 200 mm is the optimum. The research achievement provides the rational basis for the selection of parameters in the process of straightening.

关 键 词：卷轴铺设 椭圆度 矫直过程 质量控制 残余应变 有限元模拟 

分 类 号：TE952[石油与天然气工程—石油机械设备]