| 摘要: |
| 海洋防腐工程中受阴极保护金属构筑物表面的电位电流分布常常是不均匀的，而金属表面的电位电流只有在一定范围内才能使构筑物受到有效和适当的保护。尤其是复杂而庞大的海洋钢结构物(如滨海电厂钛管凝汽器)阴极保护系统的设计和监测较复杂，此阴极保护下电化学场的计算，对评价阴极保护效果，优化阴极保护设计有重要意义。采用电化学场中的拉普拉斯（Laplace）方程，使用四节点四面体和合适的形状函数对水室表层和复杂结构体系周围场域进行离散。用有限元计算法，通过对各单元的分布和整个求解区域的总和，建立了两种不同金属组成复杂结构体系的三维有限元数学模型。
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| 关键词: 钛管凝汽器 阴极保护 电位分布 有限元法 |
| DOI： |
| 分类号: |
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| Model for differ metal and complicated structure cathodic protection system in marine environment |
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WANG Ai-ping,DU Min,WANG Qing-zhang
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| Abstract: |
| In the marine anti-corrosion electric potential and current distributions of the cathodic protection metal construction surface are frequently non-uniform in , but the metal surface electric potential and electric current only can make the construction in certain scope receive an effective and suitable protection. In marine environment，it is difficult to design an effective cathodic protection system and corrosion monitoring system for a complex and huge steel structure like a power plant titanium tube condenser. So electrochemistry field computation has a vital significance for appraising the cathodic protection effect and optimizing the cathodic protection design. This article uses Laplace equation, separating tetrahedron as various units and the using the appropriate form function to discrete the complex structure, surface and its environment. The finite element computation method was used to establish a three-dimensions limited mathematics model for a complex structure system with two different metal compositions.
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| Key words: Titanium tube condenser cathodic rotection potential distribution finite element method |
