水内冷发电机空芯铜导线的防腐蚀  

Prevention of Tubular Copper Conductor in Water-Cooling Generator

作　　者：谢学军[1] 曹顺安[1] 潘玲[1] 龚洵洁[1] 彭珂如[1] 

机构地区：[1]武汉大学动力与机械学院,湖北武汉430072

出　　处：《材料保护》2007年第10期75-77,共3页Materials Protection

摘　　要：分析了水内冷发电机空芯铜导线的腐蚀原因，提出了4种相应的防腐蚀方法，即通过加强内冷水系统密封控制内冷水中溶解氧和二氧化碳含量，在除盐水中加氨或采用部分凝结水控制内冷水pH值在7．5～8．0，或在内冷水旁路采用钠型混床调节内冷水为碱性，在内冷水中添加低剂量高效铜缓蚀剂和控制其他材质腐蚀产物的沉积等。现场应用结果表明，开发的新型铜缓蚀剂对铜的缓蚀效果好，加药量小，内冷水中新型铜缓蚀剂含量在5mg／L以下，内冷水水质稳定，符合国家标准要求。加入缓蚀剂后，内冷水水质为：电导率≤2．0μS／cm，铜离子含量≤4μg／L，pH〉6．8，水质合格率达99．8％。On the basis of expounding the corrosion mechanism of the tubular copper conductor in the water-cooling generator, four methods of preventing corrosion of the tubular copper conductor in the water- cooling generator have been proposed. The corrosion of the tubular copper conductor could be prevented effectively and conveniently by keeping pH of the cooling water between 7. 5 and 8.0 by adding amine to the deionized water or giving partly the condensed water to the cooling water, and by adding low dosage and high efficiency copper inhibitor to the cooling water. The result of inhibitor application on the spot showed that the added dosage of the inhibitor developed by us was low, being lower than 5 mg/L, and that the efficiency of the inhibitor to copper was good, and the quality of the cooling water was stable. During the period that the inhibitor was added to the cooling water, the conductivity of the cooling water was lower than 2. 0 μS/cm, the content of copper in the cooling water is lower than 40 μg/L.the pH in the cooling water was higher than 6. 8.

关 键 词：内冷水发电机 空芯铜导线 紫铜 防腐蚀 

分 类 号：TM312[电气工程—电机]