加速管道系统磨蚀的参数及磨蚀预测

Coefficient for speeding pipeline system abrasion and abrasion prediction

沙的冲蚀能磨掉管壁上的腐蚀保护膜,引起严重的磨蚀性腐蚀,这种腐蚀受很多因素的影响,探讨了这些因素如何共同作用导致磨蚀性腐蚀的。B.S.McLaury等人把磨蚀实验和流动模拟(包括沙蚀)相结合运用在研究过程中,对沙蚀和磨蚀性腐蚀致使壁厚损失诸多影响因素进行了研究,这些因素包括:管道几何形状、管道尺寸、管材、流体流速、流体粘度和密度、沙粒大小、沙粒形状、沙粒密度和出沙率。提出了预测沙的磨蚀速度的方法,这个方法是在前人一些早期的适用于沙蚀条件下的经验方法基础上发展而来的。对磨蚀模拟的预测结果与实验数据进行了比较。

Sand erosion can abrade corrosion protection film on pipe wall and brings about serious abrasive corrosion. This kind of corrosion will be affected by many factors. Approaches how these factors act in combination with each other to bring about abrasive corrosion. B. S. Mclaurry and so on combine abrasive experiment and flow model (including sand abrasion) into research process. This method includes a research on such factors as the effect of sand abrasion and abrasive corrosion on pipe wall thickness losses, which covers : pipeline geometric shape, size, pipe material, flow rate, fluid viscosity an density, sand grain's size, shape, density and sand production rate. Puts forward a method for predicting sand abrasion speed. The method is developed on the basis of an experience suitable for sand abrasive condition used early in previous. Compares prediction result of abrasive corrosion with experimental data.