Nondestructive Evaluation Techniques of Creep Damage in Pressure Equipment
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摘要: 在高温环境下运行的承压设备，随着运行时间的增加，存在蠕变失效的可能性。经常出现蠕变损伤的承压设备有高温环境下工作的电站锅炉承压部件、主蒸汽管道和石化装置中的转化炉管等。在评价承压设备寿命的时候，定量确定材料的损伤程度非常重要。在国内外文献研究的基础上，综合分析了承压设备蠕变破坏早期损伤的无损评价方法。得出研究早期蠕变损伤的无损检测方法是评价设备损伤程度，预测设备寿命的重要课题。Abstract: With the increment of running time of running, the creep failure on pressure equipments which were under the high temperature environment could appear. Several pressure equipments, such as power station boiler, steam pipe, reformer tube of refinery, often suffered from creep damage under high temperature environment. To evaluate the life of the pressure equipments, it was highly significant to determine the damage level of the material. On the foundation of the domestic and foreign literature, this paper discussed the nondestructive method to evaluate the early stage failure of the pressure equipments caused by the creep damage. It is believed that the nondestructive evaluating, which focus on the creep damage of the early stage, is a significant topic in damage estimation and operational life prediction of the pressure equipments.
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[1] Brian Shannon. Assessing Creep Damage in Cast Materials for High Temperature Reformer Tube Application[C]. ASME PVP2007/CREEP8 Conference. San Antonio, Texas, USA:[s.n.],2007. [2] 石油化工装置设备腐蚀与防护手册[M].北京：中国石化出版社,1996. [3] API RP 579—2007 Fitness for Service[S]. [4] API RP 941—2004 Steels for Hydrogen Service at Elevated Temperatures and Pressures in Petroleum Refineries and Petrochemical Plants[S].
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