船体双区域外加电流阴极保护缩比模型模拟研究  

Research on physical scale model of ICCP systems in double-zones of hull

作　　者：梁成浩[1] 于楠[2] 吴建华[2] 黄乃宝[1] 

机构地区：[1]大连海事大学机电与材料工程学院,辽宁大连116026 [2]大连理工大学化工学院,辽宁大连116012

出　　处：《大连理工大学学报》2008年第5期656-660,共5页Journal of Dalian University of Technology

基　　金：辽宁省自然科学基金资助项目(972210)

摘　　要：建立某船1∶100缩比模型,研究了船体双区域外加电流阴极保护系统中船体保护电位分布.结果表明,双区域阴极保护的优化设计是在船艏区增加1组辅助阳极,且参比电极布置在两组辅助阳极之间;船艉区参比电极布置在辅助阳极外侧,此时船体保护电位曲线分布均匀,均在-0.80^-0.90 V,船体得到有效的阴极保护.螺旋桨主轴接地后,发现船艉区辅助阳极附近电位降低,且随轴转动速率增加,辅助阳极附近电位进一步降低.船模主轴不同状态下,优化设计的双区域阴极保护系统,均能达到阴极保护要求.实验验证,采用缩比模型对船体外加电流阴极保护系统进行设计是一种方便、有效的方法,为船体阴极保护优化提供了新途径.A 1 ： 100 physical scale model of a vessel is established and used to study the distribution of the potential in the impressed current cathodic protection （ICCP） system of a hull＇s double-zones. The optimized design as below is obtained based on the experimental results of the 1 ： 100 physical model. Two anodes are added to the bow area and reference electrode （RE） is fixed between two anodes, and RE is outside the anodes in the buttock area. Under the optimization operational condition, the potential range along the surface of the hull is between -- 0.80 V and -- 0.90 V, which provides adequate corrosion protection to the hull of the vessel. When the shaft is earthed, the potential around anodes reduces, and decreases with the increase of shaft% rotation rate. The optimized double-zones ICCP system can provide adequate corrosion protection of the vessel when the shaft is kept under different conditions. It is proved that the use of physical scale model provides a practical and flexible tool for the design and optimization of ICCP system of a ship.

关 键 词：缩比模型 外加电流阴极保护 保护电位 

分 类 号：TG174.41[金属学及工艺—金属表面处理]