摘要
南京市三汊河河口闸钢闸门原设计防腐方式为:钢闸门外侧喷锌+氯化橡胶涂料,压水仓内腔采用氯化橡胶涂料。由于防腐等级较低,涂层已破损,锈迹较严重。为增强闸门防腐能力,同时又不影响闸门外观,结合闸门现状和阴极保护的特点,在对涂层局部破损处进行修复的基础上,实施了外侧外加电流阴极保护,内腔采用牺牲阳极保护的联合防腐措施,以增强闸门的防腐性能,延长使用寿命。主要介绍了外加电流和牺牲阳极两种防腐方式在三汊河河口闸钢闸门上的应用,重点介绍了目前国内较少采用的外加电流方式的设计、施工及应用情况。可为不适宜采用牺牲阳极防腐方式的钢闸门提高防腐能力提供应用参考。
In the original anti - corrosion design of the steel gate of Sanchahe Estuary Sluice in Nanjing City, the measure of zinc painted ＋ chlorinated rubber coating outside surface of the gate and chlorinated rubber coating inside surface of the gate was adopted. Due to the low level of anti - corrosion and coating damage, the gate rusted seriously. According to the current situation and the characteristics of cathodic protection, the comprehensive measures are carried out both by outer cathodic protection with impressed current and inner anodic sacrifice protection after repairing the local damaged coating to enhance the anti - corrosion of gate and prolong its service life. The paper introduces the application of impressed current and anodic sacrifice protection in the gate, and focuses on the design, construction and application of impressed current mode that is less used in China at present.
出处
《人民长江》
北大核心
2013年第19期28-31,共4页
Yangtze River
关键词
阴极保护
防腐技术
钢闸门
三汊河河口闸
南京
cathodic protection
anti- corrosion technology
steel gate
Sanchahe Estuary Sluice
Nanjing
