纤维缠绕复合管材短期爆破压力理论分析  

Theoretical Analysis of Short-Term Burst Pressure of Filament Wound Composite Pipe

作　　者：丁宝 卢晓英 花艺舫 李晓峰[1] 苑会林[1] 张胜[1] 孙彦虎 李洪飞[1] DING Bao;LU Xiaoying;HUA Yifang;LI Xiaofeng;YUAN Huilin;ZHANG Sheng;SUN Yanhu;LI Hongfei(College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China;Petrochemical Research Institute of China National Petroleum Corporation,Beijing 102206,China;Fourth Oil Production Plant of Changqing Oilfield Branch,Xi'an,Shaanxi 710021,China)

机构地区：[1]北京化工大学材料科学与工程学院,北京100029 [2]中国石油天然气有限公司石油化工研究院,北京102206 [3]长庆油田分公司第四采油厂,陕西西安710021

出　　处：《塑料》2021年第1期24-28,共5页Plastics

基　　金：中国石油天然气股份有限公司科技管理部项目(2017F-11)。

摘　　要：根据一定的假设和简化构建了理论爆破压力的计算模型,并通过力学平衡法推导出纤维增强复合管材的理论短期爆破压力计算公式,然后对不同缠绕角度涤纶纤维增强高密度聚乙烯管材进行短期爆破压力测试。由实测数值与理论计算结果的偏差可知,纤维层的环向方向各层纤维受力不均不能忽略,需要对理论公式进行修正,与实测数据进行对比发现,修正公式计算结果最大误差为1.12%,可准确预测爆破压力。不同缠绕角度的计算结果表明,随着纤维缠绕角度增大,短期爆破压力先增大后减小,该管材在最大短期爆破压力时对应的缠绕角度为最佳缠绕角度,其值为60.05°。Based on certain assumptions and simplifications,a calculation model of theoretical burst pressure was constructed,and the calculation formula of theoretical short-term burst pressure of fiber-reinforced composite pipe was deduced by the mechanical balance method.Then,a short-term burst pressure test were carried out on polyester fiberreinforced high-density polyethylene pipes with different winding angles.According to the deviation between the measured value and the theoretical calculation result,it was found that the uneven force of the fibers in the hoop direction of the fiber layer couldn’t be ignored.The formula was revised and compared with the measured data,it was found that the maximum error of the calculation result of the revised formula was 1.12%,which could accurately predict the burst pressure.The calculation results of different winding angles showed that the short-term burst pressure first increases and then decrease with the increase of the filament winding angle.The winding angle corresponding to the maximum short-term burst pressure was the optimal winding angle,and the optimal winding angle for this type of pipe was determined as 60.05°.

关 键 词：纤维增强复合管 短期爆破压力 缠绕角度 修正计算模型 最佳缠绕角度 

分 类 号：TQ327.3[化学工程—合成树脂塑料工业]