发电机定子线棒温差偏高原因分析及处理  

Analysis and treatment of the high temperature of generator stator bars

作　　者：祁东东 王思卜 赵文亮 程家庆 王冬梅 张晓玲 黄万启[2] QI Dongdong;WANG Sibu;ZHAO Wenliang;CHENG Jiaqing;WANG Dongmei;ZHANG Xiaoling;HUANG Wanqi(Huadian Electric Power Research Institute Co.,Ltd.,Hangzhou,Zhejiang 310030,China;Xi＇an Thermal Power Research Institute Co.,Ltd.,Xi＇an,Shaanxi 710054,China)

机构地区：[1]华电电力科学研究院有限公司,浙江杭州310030 [2]西安热工研究院有限公司,陕西西安710054

出　　处：《清洗世界》2018年第8期12-15,共4页Cleaning World

摘　　要：发电机内冷水系统在长期运行过程中,不可避免地会发生腐蚀产物沉积,导致线棒间温差升高,机组被迫降负荷运行。化学清洗能根除沉积问题,确保机组安全运行。选择硫酸、磷酸、氨基磺酸、柠檬酸、EDTA钠盐、羟基乙酸+甲酸混酸、自制复合酸COAD等清洗介质,进行溶解和腐蚀试验。研究结果表明,复合酸COAD有最好的清洗效果。采用研究配方COAD对电厂发电机内冷水系统进行化学清洗,很好地解决了定子线棒间温差偏高的问题。In the process of long-term operation of the generator cold water system,the corrosion product deposition will inevitably occur,resulting in the temperature difference between the trough and the unit being forced to run down. Chemical cleaning can eliminate the deposition problem and ensure the safe operation of the unit. The dissolution and corrosion tests were carried out on the cleaning medium such as sulfuric acid,phosphoric acid,sulfamic acid,citric acid,EDTA sodium salt,glycolic acid ＋ formic acid mixed acid and homemade compound organic acid COAD. The results show that the compound organic acid COAD has the best cleaning effect. And the use of research formula COAD on the power plant generator cold water system for chemical cleaning,a good solution to the stator line between the temperature difference is too high.

关 键 词：温差升高 定子线棒 腐蚀 冷水系统 发电机 化学清洗 

分 类 号：TM621.8[电气工程—电力系统及自动化]