高寒地区永冻土段大口径原油管道防腐保温预制施工技术研究
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摘要
通常情况下,长输油保温管道预制及施工的最佳环境温度为-5℃～30℃,输送介质的温度一般不超过100℃,此时,防腐保温材料性能和制造工艺最佳,长期使用性能稳定可靠。中俄原油管线漠河-大庆段工程设计的高寒地区永冻土段保温管道,是国内油气长输管道首次采用由防腐材料和保温材料所构成的复合结构,线膨胀系数不同,对温差变化十分敏感。当温度低于-20℃时,聚乙烯材料因低温冷缩,可导致机械性能降低;-5℃低温环境下施工,也可能导致粘接不牢、补口综合性能不佳、开裂后修复困难。
本论文通过对敷设在大兴安岭高寒地区常年永冻土段大口径原油防腐保温管道防腐材料改性、生产配套工装及工艺技术等预制和现场低温防腐补口及开裂修补工艺技术的研究,解决了低温条件下的预制、防腐补口施工及开裂修复等一系列技术难题,减小低温冷脆、冻缩、脱粘对管道综合性能的影响,提高管道可靠性和整体使用寿命。
该课题的研究突破了我国高寒地区大口径原油管道防腐保温管低温预制、防腐补口等关键技术,成果对提高我国高寒永冻土地区油气长输管道预制及施工建设水平,具有重要意义。
Normally, the best prefabrication and construciton environment temperature for long oil transportation pipeline is from -5℃to 30℃, the transmission medium temperature usually less than 100℃, In this case, the material properties and manufacturing process are best, long-term use of performance is stable and reliable. The crude oil pipeline of Sino-russian between mohe and daqing`s engineering design of the heat preservation of piping is the first long distance pipeline by anticorrosion material and thermal insulation material that form the composite structure, Different coefficient of linear expansion`material is very sensitive to temperature changing. When the temperature is below -20℃,The mechanical properties of polyethylene will decreased because of chilling shrink. If the construction is performed at the environment temperature of - 5℃, adhesive rickety , not good filling mouth`s comprehensive performance I, difficult rehabilitate after craze may also be caused.
This paper researched on the modified anti-corrosion materials , matching production fixtures, prefabricated technology and repaired technology for low temperature and anticorrosion pipeline , a series of technic difficulties was resolved, such as prefabrication in low temperature, construction of anticorrosion and repaired for cleavage. The effect of comprehensive performance from cold-short, shrink and debond in low temperature was decreased, the holistic lifetime and realiability of the pipeline were increased.
This topic research has the breakthrough in prefabrication, anticorrosion , and repaired technology in large diameter crude oil pipeline in alpine region. It is very significant in improving the prefabrication , anticorrosion and construction level in permafrost section of alpine region in China.
本论文通过对敷设在大兴安岭高寒地区常年永冻土段大口径原油防腐保温管道防腐材料改性、生产配套工装及工艺技术等预制和现场低温防腐补口及开裂修补工艺技术的研究,解决了低温条件下的预制、防腐补口施工及开裂修复等一系列技术难题,减小低温冷脆、冻缩、脱粘对管道综合性能的影响,提高管道可靠性和整体使用寿命。
该课题的研究突破了我国高寒地区大口径原油管道防腐保温管低温预制、防腐补口等关键技术,成果对提高我国高寒永冻土地区油气长输管道预制及施工建设水平,具有重要意义。
Normally, the best prefabrication and construciton environment temperature for long oil transportation pipeline is from -5℃to 30℃, the transmission medium temperature usually less than 100℃, In this case, the material properties and manufacturing process are best, long-term use of performance is stable and reliable. The crude oil pipeline of Sino-russian between mohe and daqing`s engineering design of the heat preservation of piping is the first long distance pipeline by anticorrosion material and thermal insulation material that form the composite structure, Different coefficient of linear expansion`material is very sensitive to temperature changing. When the temperature is below -20℃,The mechanical properties of polyethylene will decreased because of chilling shrink. If the construction is performed at the environment temperature of - 5℃, adhesive rickety , not good filling mouth`s comprehensive performance I, difficult rehabilitate after craze may also be caused.
This paper researched on the modified anti-corrosion materials , matching production fixtures, prefabricated technology and repaired technology for low temperature and anticorrosion pipeline , a series of technic difficulties was resolved, such as prefabrication in low temperature, construction of anticorrosion and repaired for cleavage. The effect of comprehensive performance from cold-short, shrink and debond in low temperature was decreased, the holistic lifetime and realiability of the pipeline were increased.
This topic research has the breakthrough in prefabrication, anticorrosion , and repaired technology in large diameter crude oil pipeline in alpine region. It is very significant in improving the prefabrication , anticorrosion and construction level in permafrost section of alpine region in China.
引文
[1]王海龙,乔宁,魏刚,地热水管道防腐涂层的研究,北京化工大学学报(自然科学版),2009,36(5):61-63
[2]吴锡合,西气东输新疆段压气站埋地管道腐蚀与防腐技术研究,西南石油大学,博士学位论文,2010
[3]杨晓鸿,天然气管道双层熔结环氧粉末防腐体系的应用,油气储运,2005,24(1):43-46
[3]黄海,深根植物对天然气管道石油沥青覆盖层的影响,油气储运,2005,24(1):46-48
[4]常永懿,管道熔结环氧粉末涂料固化工艺的研究,油气储运,2009,28(3):47~48
[5]张战锋,管道保温的发展,能源与环境,2006(4):73-75
[6]张娜,低热导率硅酸铝纤维复合隔热材料研究,山东大学硕士论文,2006
[7]孙志坚,孙玮,傅加林,秦悦慧,国内绝热保温材料现状及发展趋势,能源工程,2001(4):26-28
[8]程显东,一种新型复合式防腐保温管道的预制及施工,石油工程建设,1999(1):44-46
[9]马明来,吴斌,魏广存等,控制大口径管道防腐保温“一步法”作业偏心问题的做法,石油工程建设,2009,35(5):33-37
[10]李树通,埋地集输管道防腐保温技术研究,工程论坛,2005(16):122-123
[11]赵其新,马向前,马起蓥等,硬质聚氨酯泡沫塑料防腐保温管道电热熔缩复合补口技术,石油工程建设,2005,31(Sup):105-108
[12]荆棘,原油长输管线防腐保温工程质量控制,石油化工技术经济,2007,23(1):43-44
[13]乔军平,张嗣伋，张永宏等，油气管道防腐盢乱淮纬尚托鹿ひ眨推⒃耍?006,25(4):38-40
[14]米琪,管道防腐层补口与熔结环氧粉末涂层(FBE)补口材料的选择,城市煤气,2001, 315(5):4-8
[15] ASTM G31 Standard Practice for Laboratory Immersion Corrosion Testing of Metals. Houston:ASTM International,2004.
[16] NACETM0169一2000 Laboratory Corrosion Testing Of Metals, Houston:NACE,2000
[17] GallianoF,LandoltD. Evaluation of eorrosion Protection Properties of additives for waterborne epoxy coatings on steel[J]. Progress in Organic Coatings. 2002,44(3):217~225.
[18] SunW. Optimal control of impressed cathodic protection systems in ship building[J] .Numerical Methods in Engineering.2000,49(6):751一768
[19] Luiz C W,Panayiotis M. Genetic algorithms for inverse cathodic Protection Problems [J]. Engineering Analysis with Boundary Elements. 2004,28(3):267一277;
[2]吴锡合,西气东输新疆段压气站埋地管道腐蚀与防腐技术研究,西南石油大学,博士学位论文,2010
[3]杨晓鸿,天然气管道双层熔结环氧粉末防腐体系的应用,油气储运,2005,24(1):43-46
[3]黄海,深根植物对天然气管道石油沥青覆盖层的影响,油气储运,2005,24(1):46-48
[4]常永懿,管道熔结环氧粉末涂料固化工艺的研究,油气储运,2009,28(3):47~48
[5]张战锋,管道保温的发展,能源与环境,2006(4):73-75
[6]张娜,低热导率硅酸铝纤维复合隔热材料研究,山东大学硕士论文,2006
[7]孙志坚,孙玮,傅加林,秦悦慧,国内绝热保温材料现状及发展趋势,能源工程,2001(4):26-28
[8]程显东,一种新型复合式防腐保温管道的预制及施工,石油工程建设,1999(1):44-46
[9]马明来,吴斌,魏广存等,控制大口径管道防腐保温“一步法”作业偏心问题的做法,石油工程建设,2009,35(5):33-37
[10]李树通,埋地集输管道防腐保温技术研究,工程论坛,2005(16):122-123
[11]赵其新,马向前,马起蓥等,硬质聚氨酯泡沫塑料防腐保温管道电热熔缩复合补口技术,石油工程建设,2005,31(Sup):105-108
[12]荆棘,原油长输管线防腐保温工程质量控制,石油化工技术经济,2007,23(1):43-44
[13]乔军平,张嗣伋，张永宏等，油气管道防腐盢乱淮纬尚托鹿ひ眨推⒃耍?006,25(4):38-40
[14]米琪,管道防腐层补口与熔结环氧粉末涂层(FBE)补口材料的选择,城市煤气,2001, 315(5):4-8
[15] ASTM G31 Standard Practice for Laboratory Immersion Corrosion Testing of Metals. Houston:ASTM International,2004.
[16] NACETM0169一2000 Laboratory Corrosion Testing Of Metals, Houston:NACE,2000
[17] GallianoF,LandoltD. Evaluation of eorrosion Protection Properties of additives for waterborne epoxy coatings on steel[J]. Progress in Organic Coatings. 2002,44(3):217~225.
[18] SunW. Optimal control of impressed cathodic protection systems in ship building[J] .Numerical Methods in Engineering.2000,49(6):751一768
[19] Luiz C W,Panayiotis M. Genetic algorithms for inverse cathodic Protection Problems [J]. Engineering Analysis with Boundary Elements. 2004,28(3):267一277;