| 张宇,李相波,刘广义,李开伟,谭振江,侯健.模拟海水管路的电偶效应数值仿真研究[J].装备环境工程,2022,19(4):101-107. ZHANG Yu,LI Xiang-bo,LIU Guang-yi,LI Kai-wei,TAN Zhen-jiang,HOU Jian.Numerical Simulation Research on Galvanic Effect of Simulating Seawater Pipeline[J].Equipment Environmental Engineering,2022,19(4):101-107. |
| 模拟海水管路的电偶效应数值仿真研究 |
| Numerical Simulation Research on Galvanic Effect of Simulating Seawater Pipeline |
| 投稿时间：2021-01-22 修订日期：2020-03-22 |
| DOI：10.7643/issn.1672-9242.2022.04.016 |
| 中文关键词: 海水管路 电偶腐蚀 数值仿真中图分类号:TG172.5 文献标识码:A 文章编号:1672-9242(2022)04-0101-07 |
| 英文关键词:sea water pipeline galvanic corrosion numerical simulation |
| 基金项目: |
|
|
| Author | Institution |
| ZHANG Yu | State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266101, China |
| LI Xiang-bo | State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266101, China |
| LIU Guang-yi | State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266101, China |
| LI Kai-wei | State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266101, China |
| TAN Zhen-jiang | State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266101, China |
| HOU Jian | State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Shandong Qingdao 266101, China |
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 研究钛合金模拟海水管路与船体间在不同电连接方式下的电位以及腐蚀电流密度分布，明确防腐措施。方法 针对钛合金模拟海水管路与船体结构，基于有限元建立仿真模型，开展两者的电偶效应数值仿真计算，重点研究两者电连接状态、接触界面绝缘状态和所有结构体单元绝缘状态的电位和电流密度分布情况。结果 在船体钢与钛合金管路系统电连接时，船体钢处于加速腐蚀状态，且与海水管路交界面处腐蚀最为严重，而海水管路处于阴极保护状态。当海水管路结构与船体结构之间绝缘时，船体与海水管路均呈现出自腐蚀状态，两系统间不存在电偶腐蚀。当海水管路结构与船体结构之间绝缘，且海水管路的各单元间也绝缘时，船体与管路海水管路各单元均呈现出自腐蚀状态，两系统间以及海水管路各单元间不存在电偶腐蚀。结论 钛合金管路与船体钢电连接，将会导致船体钢发生电偶腐蚀，尤其是两者交界面处，腐蚀最为严重。异种金属间的绝缘处理可以阻止电偶腐蚀的发生，且只需要将异种金属之间绝缘，无需将同种材质的结构体之间进行绝缘处理。 |
| 英文摘要: |
| This paper aims to study the potential and corrosion current density distribution between the titanium alloy simulated seawater pipeline and the ship hull under different electrical connections and clarify the anti-corrosion measures. Aiming at the titanium alloy simulating seawater pipeline and hull structure, a simulation model was established based on finite element to carry out the numerical simulation calculation of the galvanic effect of the two, focusing on the electrical connection state of the titanium alloy simulating seawater pipeline and hull structure, the insulation state of the contact interface, and the potential of the insulation state of all structural units. The distribution of current density and current density play a guiding role in suppressing galvanic corrosion in actual projects. The simulation results show that when the hull steel is electrically connected to the titanium alloy pipeline system, the hull steel is in a state of accelerated corrosion, and the corrosion at the interface with the seawater pipeline is the most serious, while the seawater pipeline is in a cathodic protection state. When the seawater pipeline structure is insulated from the hull structure, both the hull and seawater pipeline appear to be self-corrosive, and there is no galvanic corrosion between the two systems. When the seawater pipeline structure is insulated from the hull structure and the seawater pipeline and the units are also insulated, each unit of the ship's hull and pipeline seawater piping is in a self-corrosive state, and there is no galvanic corrosion between the two systems and between the seawater pipeline units. The electrical connection of titanium alloy piping and hull steel will cause galvanic corrosion of hull steel, especially at the interface between the two, where the corrosion is the most serious. The insulation treatment between dissimilar metals can prevent the occurrence of galvanic corrosion, and only needs to insulate the dissimilar metals, and there is no need to insulate the structures of the same material. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
