石油输送管线的疲劳裂纹扩展与寿命预估  

Fatigue Crack Growth and Life Estimation of a Crude Oil Pipeline

作　　者：史耀武[1] 史轩[2] 孙嗣莹[1] 

机构地区：[1]北京工业大学 [2]北京巴布科克.威尔科克斯有限公司

出　　处：《焊管》2003年第2期7-10,61,共4页Welded Pipe and Tube

摘　　要：用紧凑拉伸 ( CT)试件 ,测试了 API 5 L X5 2管材及焊管接头的疲劳裂纹扩展速率 ,根据泵站的载荷谱 ,估算了管线的服役寿命。指出管线运行载荷谱及焊管缺陷对石油管线的服役寿命有重要影响。减少运行中管线的压力波动、消除焊趾缺陷、严格焊管生产的无损检查 。Fatigue crack growth rate has been measured for the API 5L X52 steel and its welded joints using CT specimens.Based on the operational pressure fluctuation spectrum acquired at pump station discharges,service life of the pipeline is estimated.It is indicated that operational pressure spectrum and defects of pipeline has important influence on the lifetime of crude oil pipeline.In order to extend the lifetime,we must decrease the pressure fluctuation of the pipeline, eliminate defects of welds,and enhance non-destructive testing.

关 键 词：载荷谱 石油输送管线 疲劳裂纹扩展 寿命预估 

分 类 号：TE973[石油与天然气工程—石油机械设备]