管道维抢修复合材料应用浅析
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摘要
近年来复合材料在油气管道维抢修中被推广应用,成为处置油气管道缺陷的一种重要手段。通过标准对比及试验研究,认为复合材料不适用于环焊缝缺陷的补强,但对于环焊缝错边缺陷,由于错边主要造成局部应力集中,认为复合材料可通过增加管道等效壁厚的方式用于错边缺陷的补强。对变形协调和等强度补强原理分析后认为,以管道不发生屈服为边界条件,应更加注重变形协调,在确保不发生其他风险前提下,尽量使用拉伸模量与钢管弹性模量接近的复合材料。
In recent years,the wrap composite material sleeve has been applied in the oil and gas pipeline maintenance,which has become an important way to repair the pipeline flaws. After analysis of standards and test data,it was found that the wrap composite material sleeve didn't fit for the reinforcement of the girth weld flaw. But for the girth weld misalignment,because the damage of misalignment mainly caused the local stress concentration,the wrap composite material sleeve can reinforce misalignment because it could increase equivalent wall thickness of pipe. The compatibility of deformation and the equivalence of strength reinforcement were analyzed. It was found that the compatibility of deformation was more important than equivalence of strength under the boundary conditions of no pipe strength yield happened. If there was no other risk,the composite material,whose tensile modulus was close to pipe elasticity modulus,was fitter for pipeline maintenance.
In recent years,the wrap composite material sleeve has been applied in the oil and gas pipeline maintenance,which has become an important way to repair the pipeline flaws. After analysis of standards and test data,it was found that the wrap composite material sleeve didn't fit for the reinforcement of the girth weld flaw. But for the girth weld misalignment,because the damage of misalignment mainly caused the local stress concentration,the wrap composite material sleeve can reinforce misalignment because it could increase equivalent wall thickness of pipe. The compatibility of deformation and the equivalence of strength reinforcement were analyzed. It was found that the compatibility of deformation was more important than equivalence of strength under the boundary conditions of no pipe strength yield happened. If there was no other risk,the composite material,whose tensile modulus was close to pipe elasticity modulus,was fitter for pipeline maintenance.
引文
[1]马卫锋,唐凡,梁兵,等.管道修复补强用复合材料现场检测及评价指标体系[J].石油工程建设,2013,39(6):56-59.
[2]帅健,刘惟,王俊强,等.复合材料缠绕修复管道的应力分析[J].石油学报,2013,34(3):372-379.
[3]中国石油天然气股份有限公司管道分公司.油气管道修复手册:Q/SY GD 1033-2014[S].北京:石油工业出版社,2014:2-3.
[4]中国石油天然气集团公司.油气管道管体修复技术规范:Q/SY 1592-2013[S].北京:中国标准出版社,2015:2-3.
[5]国家质量监督检验检疫总局.油气管道完整性管理规范:GB 32167-2015[S].北京:中国标准出版社,2015.
[6]王修云,郑岩,王金友,等.碳纤维复合材料焊缝补强技术研究[J].油气储运,2005,24(Z):133-137.
[7]国家质量监督检验检疫总局.含缺陷油气管道剩余强度评价方法:SY/T 6477-2017[S].北京:石油工业出版社,2017:22-24.
[8]ASME. Repair of pressure equipment and piping:ASEM PCC-2-2015[S]. New York:ASME publisher,2015:149.
[2]帅健,刘惟,王俊强,等.复合材料缠绕修复管道的应力分析[J].石油学报,2013,34(3):372-379.
[3]中国石油天然气股份有限公司管道分公司.油气管道修复手册:Q/SY GD 1033-2014[S].北京:石油工业出版社,2014:2-3.
[4]中国石油天然气集团公司.油气管道管体修复技术规范:Q/SY 1592-2013[S].北京:中国标准出版社,2015:2-3.
[5]国家质量监督检验检疫总局.油气管道完整性管理规范:GB 32167-2015[S].北京:中国标准出版社,2015.
[6]王修云,郑岩,王金友,等.碳纤维复合材料焊缝补强技术研究[J].油气储运,2005,24(Z):133-137.
[7]国家质量监督检验检疫总局.含缺陷油气管道剩余强度评价方法:SY/T 6477-2017[S].北京:石油工业出版社,2017:22-24.
[8]ASME. Repair of pressure equipment and piping:ASEM PCC-2-2015[S]. New York:ASME publisher,2015:149.