600MW汽轮机在首次大修中的积盐检查  

Inspection of Salt Deposits in 600MW Steam Turbine in First Complete overhaul

作　　者：王涛英 徐军锋 郭包生 潘惠 黄晓峰 

机构地区：[1]内蒙古大唐国际托克托发电有限责任公司,内蒙古托克托010206

出　　处：《华北电力技术》2009年第S1期46-48,52,共4页North China Electric Power

摘　　要：对1号机汽轮机转子叶片进行检查,发现高压转子叶片和部分中压转子叶片上的积盐厚达0.7 mm,通过元素分析和物相分析表明,积盐主要成分是磷酸钠盐和硅酸钠盐。对汽包内汽水分离装置进行了全面检查和检修,提出了可能导致积盐的几个因素,结合热化学试验,对1号机组提出整改措施,大修启动后饱和蒸汽钠含量较大修前降幅约15.5%。After examining the turbine vane of boiler №1,we found that the high pressure vanes and some intermediate pressure vanes deposit a lot of salt,through element analysis and phase anaysis,we discovered that those salt are mainly phosphate and silicate.After a through examination on the boiler's air and water separator,we found a few possible reasons for salt deposition,with help of thermochemistry test,we presented solutions for boilre №1.After the overhaul,percentage of sodium in the saturated steam dropped 15.5%.

关 键 词：大修 叶片 汽轮机 积盐 

分 类 号：TK268[动力工程及工程热物理—动力机械及工程]