发电机内冷水系统中由于二氧化碳的溶入并不断累积产生的问题日渐突出。通过理论分析了二氧化碳与氢电导率及 pH 的关系，利用动态模拟试验台，采用电化学方法研究了不同二氧化碳量对发电机内冷水铜导线腐蚀的影响。提出用氢电导率对二氧化碳含量进行表征，在监测内冷水水质时，对氢电导率进行监测，控制氢电导率在0．1μS／cm 以下，以提高对铜的缓蚀保护效果和内冷水 pH 在线测量的准确性。
At present,the problem of carbon dioxide dissolation and continuous accumulation in the generator inner cooling water is increasingly outstanding.The relationships of cation conductivity (CC)and pH with carbon dioxide was theoretically analyzed.And the influence of carbon dioxide at different degree contents on the corrosion of copper conductor in the generator inner cooling water was studied by electrochemical method and using a dynamic simulation experiment set.The results showed that it was appropriate to utilize the cation conductivity to represent the content of dissolved carbon dioxide and to supervise and control the cation conductivity below 0.1 μS/cm when inner cooling water was supervised so as to improve the corrosion protection effect of copper and veracity of on-line measurement of pH.
参考文献
| [1] | 谢学军;龚洵洁;许崇武.热力设备的腐蚀与防护[M].北京:中国电力出版社,2011:330-335. |
| [2] | 孙本达,马智敬.超超临界机组发电机内冷却水运行中存在的问题及处理[J].热力发电,2009(01):96-98. |
| [3] | DL/T1164-2012.汽轮发电机运行导则[S]. |
| [4] | DL/T801-2010.大型发电机内冷却水质及系统技术要求[S]. |
| [5] | GB/T12145-2008.火力发电机组及蒸汽动力设备水汽质量[S]. |
| [6] | GB/T7064-2008.隐极同步发电机技术要求[S]. |
| [7] | SCHLEITHOFF K;EMSHOFF H W .Optimization of the conditioning of stator cooling water[J].VGB Kraftwerkstechnik,1990,70(9):794-798. |
| [8] | 邹哲,胡学文,陈志刚,吴琼,李晶.发电机内冷水处理方法的研究及探讨[J].腐蚀与防护,2003(07):310-312. |
| [9] | D4519-1994(1999).Standard test method for on-line determination of anions and carbon dioxide in high pu-rity water by cation exchange and degassed cation con-ductivity[S]. |
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