许彦, 刘迎来, 聂向晖, 丰振军, 王高峰, 李亮. 小口径薄壁钢管爆破压力预测[J]. 油气储运, 2017, 36(11): 1265-1269. DOI: 10.6047/j.issn.1000-8241.2017.11.006
引用本文: 许彦, 刘迎来, 聂向晖, 丰振军, 王高峰, 李亮. 小口径薄壁钢管爆破压力预测[J]. 油气储运, 2017, 36(11): 1265-1269. DOI: 10.6047/j.issn.1000-8241.2017.11.006
XU Yan, LIU Yinglai, NIE Xianghui, FENG Zhenjun, WANG Gaofeng, LI Liang. Prediction on the burst pressure of small diameter and thin wall steel pipe[J]. Oil & Gas Storage and Transportation, 2017, 36(11): 1265-1269. DOI: 10.6047/j.issn.1000-8241.2017.11.006
Citation: XU Yan, LIU Yinglai, NIE Xianghui, FENG Zhenjun, WANG Gaofeng, LI Liang. Prediction on the burst pressure of small diameter and thin wall steel pipe[J]. Oil & Gas Storage and Transportation, 2017, 36(11): 1265-1269. DOI: 10.6047/j.issn.1000-8241.2017.11.006

小口径薄壁钢管爆破压力预测

Prediction on the burst pressure of small diameter and thin wall steel pipe

  • 摘要: 精准可靠的管道爆破压力预测,不仅有利于油气输送管道系统的工程设计和完整性评估,而且可以提高管道的传输效率。针对油气管道常见的小口径薄壁钢管开展了静水压力爆破试验,对比了几种典型爆破压力的预测公式和方法,采用偏差分析将预测结果与试验结果进行比较。相比Von Mises屈服准则,基于Tresca屈服准则的爆破压力预测公式计算得到的小口径薄壁钢管承压能力更接近实际结果,而且Tresca屈服准则中的最大切应力塑性破坏更容易解释小口径薄壁钢管的静水压爆破过程。同时考虑钢管的几何尺寸特点,采用ASME公式、Barlow OD公式、Barlow ID公式、Max shear stress公式以及Turner公式计算小口径薄壁钢管的爆破压力,其适用性更强。

     

    Abstract: Accurate and reliable prediction on pipeline burst pressure not only is conducive to the engineering design and integrity assessment of oil and gas pipeline systems, but also can improve the transmission efficiency of pipelines. In this paper, the hydrostatic pressure burst test was carried out on the small diameter and thin wall steel pipes which are commonly used in oil and gas pipelines. Then, several typical prediction formulas and methods for burst pressure were compared, and the prediction results were compared with the test results by means of deviation analysis. It is shown that the loading capacity of small diameter and thin wall steel pipe which is calculated by the burst pressure prediction formula based on Tresca yield criterion is closer to the actual result than that based on Von Mises yield criterion. And furthermore, it is more easily to interpret the hydrostatic burst process of small diameter and thin wall steel pipes based on the plastic failure of maximum shear stress in Tresca yield criterion. In view of the geometric characteristics of the steel pipe, ASME formula, Barlow OD formula, Barlow ID formula, Max shear stress formula and Turner formula are more suitable for calculating the burst pressure of small diameter and thin wall steel pipes.

     

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