采用数值模拟法研究某水冷器管箱牺牲阳极对邻近换热管的阴极保护作用  

Sacrificial Anodes Cathodic Protection Effect on Adjacent Heat Exchange Tubes of a Water Cooler by Numerical Simulation

作　　者：李军威 朱巍 LI Junwei;ZHU Wei(Shanghai SECCO Petrochemical Co.,Ltd.,Shanghai 201424,China)

机构地区：[1]上海赛科石油化工有限责任公司,上海201424

出　　处：《腐蚀与防护》2025年第4期91-95,共5页Corrosion & Protection

摘　　要：当水冷器管程有冷却水时,邻近管箱的换热管段经常发生腐蚀泄漏。在管箱内布置牺牲阳极可有效缓解管箱内壁的腐蚀,但是否能为邻近的换热管提供保护有待研究。通过数值模拟法对某型水冷器管箱牺牲阳极进行设计,添加6支阳极,并在管箱内壁增加涂层,管箱内壁区域能得到良好保护的同时,可为邻近换热管提供保护,保护范围虽然只有0.75 m,但已经覆盖换热管易在腐蚀泄漏的部位。此外,涂层是否完整,决定了管箱阴极保护对邻近换热管的保护范围。When there is cooling water in the tube side of the water cooler,heat exchange tube sections adjacent tube box often experience corrosion and leakage.By arranging sacrificial anodes in the tube box,corrosion on the inner wall of the tube box can be effectively alleviated,but whether it can provide protection for adjacent heat exchange tubes remains to be studied.By using numerical simulation method to design sacrificial anodes for a certain type of water cooler tube box,6 anodes were added and a coating was added to the inner wall of the tube box.The inner wall area of the tube box could be well protected while providing protection for adjacent heat exchange tubes.Although the protection range was only 0.75 meters,it had already covered the parts of the heat exchange tubes that were prone to corrosion and leakage.In addition,the completeness of the coating determined the protection range of the cathodic protection of the tube box for adjacent heat exchange tubes.

关 键 词：冷却水腐蚀 管箱牺牲阳极 换热管 数值模拟 阴极保护 

分 类 号：TG174.4[金属学及工艺—金属表面处理]