PCP系统的优化对船舶水下电场的抑制作用  

Restraining effect of PCP system optimization on electric field signal in the sea

作　　者：谭浩 陈聪[2] 沈滨 TAN Hao;CHEN Cong;SHEN Bin(College of Electrical Engineering, Naval University of Engineering, Wuhan 430033, China;Department of Basic Courses, Naval University of Engineering, Wuhan 430033, China;Department of Mechanical and Electrical Engineering, Wuhan Donghu College, Wuhan 430212, China)

机构地区：[1]海军工程大学电气工程学院,湖北武汉430033 [2]海军工程大学基础部,湖北武汉430033 [3]武汉东湖学院机电工程学院,湖北武汉430212

出　　处：《国防科技大学学报》2021年第1期139-144,共6页Journal of National University of Defense Technology

基　　金：国家自然科学基金资助项目(51109215);海军工程大学基金资助项目(425317Q011)。

摘　　要：为了达到抑制水下电场特征的目的,需要使船身电位保持均匀。采用边界元法建立了空气-海水两层介质中的船体模型,通过改变牺牲阳极阴极保护系统中牺牲阳极的数量和分布,定量计算了不同保护状态下的船身电位和水下电场,并进行了实验室船模实验。仿真和实验结果均表明:对阴极保护系统进行合理的设计,使阳极与腐蚀区域之间保护电流的作用距离缩短并使多个阳极共同承担同一区域的防腐功能,能够降低单个阳极输出保护电流的强度,提高船身电位的均匀化程度,在达到防腐效果的同时起到抑制水下电场的目的。It is necessary to make the hull potential uniform in order to restrain the characteristics of underwater electric field.A ship hull model in air-sea two-layer medium was established through boundary element method.By changing the number and distribution of sacrificial anodes in passive cathodic protection system,the potential of ship hull and underwater electric field under different protection conditions were calculated quantitatively,and an experiment in laboratory was carried out.Simulation and the experiment results show that the action distance of protection current between anode and corroded area can be shortened by reasonable design of cathodic protection system,which can make share the anticorrosive function of the same area with multiple anodes and can reduce the intensity of protection current output from single anode to improve the uniformity of hull potential,and can restrain the objective of underwater electric field while achieving anticorrosive effect.

关 键 词：船舶水下电场 被动阴极保护系统 阴极保护系统 边界元 电位均匀化 

分 类 号：U675.6[交通运输工程—船舶及航道工程]