立式柱形油品储罐充装中静电电势的动态分布

发布时间：2018-05-13 16:00

  本文选题：油品储罐 + 空间电荷密度　； 参考：《华南理工大学学报(自然科学版)》2017年06期

【摘要】：考虑储罐充装过程中储罐内空间电荷密度随填充时间的变化特性,建立了充装过程中立式柱形储罐内静电电势的动态分布计算模型.对比模型计算结果与文献中的实验测量数据,验证了模型的有效性.将该模型用于分析无输入管道、采用中间鹤管输入、采用底部管道输入3种情况下储罐内空间电势的动态分布规律,发现:3种情况下储罐内的空间最大电势、液面最大电势均随油品填充率先增加后降低;底部输入管道对储罐内静电电势分布的影响较小,中间输入鹤管可以显著降低储罐内的静电电势;采用中间鹤管输入时,保持油品流量恒定,空间电势最大值随鹤管直径增大而减小,流速恒定时空间电势最大值则随鹤管直径增大而增大.研究结果能够为储罐充装过程中输送条件、输送参数的选取提供指导,以降低充装过程中的静电风险.
[Abstract]:Considering the change of space charge density with filling time during filling, a dynamic distribution model of electrostatic potential in vertical cylindrical storage tank is established. The validity of the model is verified by comparing the calculated results with the experimental data in the literature. The model is used to analyze the dynamic distribution of the spatial potential in the tank under three conditions, I. E. the input of the middle crane pipe and the input of the bottom pipe. The maximum spatial potential in the tank is found under the three conditions: 1: 3. The maximum potential of liquid level increased first and then decreased with the filling of oil, the influence of bottom input pipeline on electrostatic potential distribution in storage tank was small, and the electrostatic potential in storage tank was significantly decreased by intermediate input crane tube. Keeping the oil flow constant, the maximum value of space potential decreases with the increase of crane pipe diameter, and the maximum value of space potential increases with the increase of crane tube diameter when the flow rate is constant. The results of the study can provide guidance for the selection of transportation conditions and transportation parameters during the filling process of the storage tank and reduce the electrostatic risk during the filling process.
【作者单位】： 华南理工大学安全科学与工程研究所;
【基金】：国家自然科学基金资助项目(21576102)~~
【分类号】：TE88
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本文编号：1883862