论文部分内容阅读
为了掌握金属储罐基础厚度、土壤电阻率对储罐阴极保护的影响,建立了20钢储罐底板外侧阴极保护电位分布的数学模型。利用FLUENT软件模拟计算了不同影响因素下金属储罐底板外侧的阴极保护电位,研究了不同厚度沥青砂层、砂垫层和土壤电阻率对其阴极保护电位分布的影响。结果表明:沥青砂层的厚度对保护电位分布影响较小,土壤电阻率对保护电位分布影响较大,砂垫层越厚越有利于阴极保护电位的均匀分布。本模型的模拟结果与实测结果相近,可以用于金属储罐阴极保护效果的预测。
In order to grasp the influence of the thickness of metal storage tank foundation and the soil resistivity on the cathodic protection of storage tank, a mathematical model for the distribution of cathodic protection potential outside the storage tank bottom of 20 steel was established. Using FLUENT software, the cathodic protection potentials outside the metal tank bottom under different influence factors were simulated. The effects of different thickness of tar sand, sand cushion and soil resistivity on the cathodic protection potential distribution were studied. The results show that the thickness of asphalt sand has little influence on the distribution of protective potential, and the soil resistivity has a great influence on the distribution of protective potential. The thicker the sand cushion is, the more conducive to the uniform distribution of cathodic protection potential. The simulation results of this model are similar to the measured ones and can be used to predict the cathodic protection of metal storage tanks.