小口径薄壁钢管爆破压力预测

发布时间：2018-03-15 00:27

本文选题：小口径薄壁钢管　切入点：爆破压力　出处：《油气储运》2017年11期 　论文类型：期刊论文

【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 pressure prediction of pipeline blasting is not only beneficial to the engineering design and integrality evaluation of oil and gas pipeline system. And the transmission efficiency of the pipeline can be improved. The hydrostatic pressure blasting test is carried out for the small diameter thin-walled steel pipe commonly used in oil and gas pipeline, and several typical blasting pressure prediction formulas and methods are compared. Compared with Von Mises yield criterion, the pressure bearing capacity of small diameter thin-walled steel pipe calculated by Tresca yield criterion is closer to the actual result. Moreover, the maximum shear stress plastic failure in Tresca yield criterion is easier to explain the hydrostatic blasting process of small diameter thin-walled steel pipe. Using ASME formula and Barlow OD formula / Barlow ID formula, Max shear stress formula and Turner formula to calculate the blasting pressure of thin-walled steel pipe with small caliber is more applicable.
【作者单位】：中国石油天然气集团公司石油管工程技术研究院;北京隆盛泰科石油管科技有限公司;
【分类号】：TE973

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