Research Of Buried Pipeline Of Electrochemical Protection System Based On Finite Element Method

As the most important mode of transportation like road transport, rail transport, water transport and air transport, pipeline transport play a very important role in national construction and economic development in our country. As the main way of transporting crude oil and gas, pipelines have been used more and more widely in our country. Due to the increase of running time of pipelines, the construction defects and man-made destructions, buried pipelines are often damaged by corrosion, cause great losses of economy and lives of people. In order to mitigate corrosion, the combination system of protective coating and cathodic protection is widely used.This paper adopts the method of finite element simulation, by taking jingbian pipelines as the example, establish the simulation model of pipeline by using ANSYS software, get the potential distribution of cathodic protection on pipelines. Comparing the simulate potential and real potential, we can get the fact that the maximum bias between them is less than 10%. The reliability of numerical model and method are verified.In order to further study of the electrochemical protection of buried pipeline, this paper tries to use finite element method to simulate the process of anodic protection of buried pipeline, by taking guizhou pipelines as the example, establish the simulation model of pipeline by using ANSYS software, get the potential distribution of anodic protection on pipeline. Comparing the simulate potential and real potential, we find two potentials are almost the same, proved the feasibility that using the finite element simulation method to simulate the process of anodic protection of buried pipeline.