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试验研究

埋地管道阴极保护系统辅助阳极参数优化研究

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  • 1. 西安石油大学电子工程学院; 2. 陕西省油气井测控技术重点实验室
权 勃(1991-),工学硕士,研究方向为管道阴极保护,电话:18391867207,E - mail:819526652@qq.com

收稿日期: 2021-10-29

  修回日期: 2021-11-17

  录用日期: 2021-12-22

  网络出版日期: 2023-12-27

基金资助

西安石油大学研究生创新与实践能力培养计划资助项目(YCS20122019)

Research on Optimization of Auxiliary Anode Parameters of Cathodic Protection System of Buried Pipeline

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  • 1. School of Electronic Engineering, Xi’an Shiyou University, Xi’an 710065, China;2. Shaanxi Key Laboratory of Oiland Gas Well Measurement and Control Technology, Xi’an 710065, China

Received date: 2021-10-29

  Revised date: 2021-11-17

  Accepted date: 2021-12-22

  Online published: 2023-12-27

摘要

阴极保护是抑制管道电化学腐蚀的重要手段,其电位的分布情况直接影响着管道保护效果。以西北某成品油输油站为例,利用COMSOL Multiphysics仿真软件研究管道阴极保护电位的分布规律,分析确定了影响管道阴极保护电位分布的主要因素是辅助阳极的埋设位置和输出电流值;并且通过电化学试验分析得到了L360管线钢在该成品油输油站模拟土壤溶液的最佳保护电位。然后以阳极数量、阳极敷设位置和阳极输出电流值为优化目标建立目标函数,利用模拟退火算法搜索出最佳阳极数量,最佳阳极位置和最佳阳极输出电流值。最后根据管道实际保护电位验证了优化方案的可行性,结果证明该方法对阴极保护设计有一定的参考价值。

本文引用格式

张奇志, 权勃, 李琳 . 埋地管道阴极保护系统辅助阳极参数优化研究[J]. 材料保护, 2022 , 55(3) : 67 -72 . DOI: 10.16577/j.issn.1001-1560.2022.0069

Abstract

Cathodic protection is an important method to inhibit the electrochemical corrosion of pipelines, and its potential distribution directly affects the pipeline protection effect. Taking a product oil transportation station in Northwest China as an example, the distribution rule of the cathodic protection potential of the pipeline was studied using COMSOL Multiphysics simulation software, and the main factors affecting the distribution of the cathodic protection potential of the pipeline were analyzed and determined to be the embedding position and output current value of the auxiliary anode. The optimal protection potential of L360 pipeline steel in the simulated soil solution of the product oil transportation station was obtained through electrochemical experiment analysis. Then, the objective function was established with the anode number, anode laying position and anode output current value as optimization goals. The optimal anode quantity, the optimal anode position, and the optimal anode output current value were searched and obtained by the simulated annealing algorithm. Finally, the feasibility of the optimization scheme was verified based on the actual protection potential of the pipeline, which proved that this method could provide a certain reference for the design of cathodic protection.
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