复合材料修复含腐蚀管道的变形量预测  

Prediction of Composite Deformation in Pipelines with Repaired Defects

作　　者：徐时贤 段梦兰[1] 张玉[1] 何同[2] 

机构地区：[1]中国石油大学(北京),北京102249 [2]中国石油化工股份有限公司石油工程技术研究院,北京100029

出　　处：《石油矿场机械》2016年第9期71-74,共4页Oil Field Equipment

基　　金：国家自然科学基金"深海极端环境下复合材料立管粘结接头的强度及断裂研究"(No.11302264);国家重点基础研究发展计划(973计划)"深海工程结构的极端环境作用与全寿命服役安全"(2011CB013702)

摘　　要：采用复合材料修复管道的技术比其他传统修复技术更有优势,而且还能降低成本。因为复合材料的变形量决定了修复管道的承载内压能力,因此计算了两种情况下的复合材料变形量,即,单一腐蚀和两处腐蚀。建立带缺陷管道的三维模型,对腐蚀的深度、宽度和缺陷的距离进行研究。130个有限元模型通过Python语言进行了参数化建模。分析结果证明腐蚀长度对复合材料的变形量影响比较大。而且,对于两处腐蚀的情况,当它们的轴向距离参数大于2时,由具有最大尺寸缺陷的腐蚀决定复合材料变形量。Repairs made with composite patches on pipes offer distinct advantages over traditional repairs in addition to reduced cost. The object of this study was to calculate amount of deformations of composite in repaired pipelines under two conditions ： single corrosion defect and two corrosion defects. The three-dimensional finite element model （FEM） was built. The effects of corroded depth, length, width and distance of defects were investigated. Besides, 130 finite element models of thick-walled pipes with practical configurations were constructed and analyzed using Python （the programming language within the finite element software package ABAQUS）. The obtained results indicated that the length of defect has a great influence on the deformation. In addition, for two corrosion defects, when the axial spacing factor is more than 2, the maximum deformation depends on the maximum dimension of them.

关 键 词：管道维修 复合材料 腐蚀 径向变形 

分 类 号：TE973[石油与天然气工程—石油机械设备]