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循环冷却水系统中腐蚀在线监测装置的开发与应用
引用本文:张秀丽,安洪光,谢生源,王应高,吴仕宏,郑丽群.循环冷却水系统中腐蚀在线监测装置的开发与应用[J].中国电力,2003,36(3):24-26.
作者姓名:张秀丽  安洪光  谢生源  王应高  吴仕宏  郑丽群
作者单位:1. 华北电力科学研究院有限责任公司,北京,100045
2. 北京大唐发电股份有限公司,北京,100053
3. 北京大唐下花园发电厂,河北,张家口,075311
4. 中国科学院金属研究所,辽宁,沈阳,110015
摘    要:介绍电厂循环水系统腐蚀在线监测装置原理、组成及其在电厂的应用。监测装置采用电化学线性极化和弱极化测定方法,无需已知塔菲尔常数即可直接给出凝汽器铜管在实际循环水系统中的年腐蚀速率和极化电阻。现场技术人员可根据测量结果评价缓蚀剂的缓蚀效果,并根据极化电阻的变化趋势初步判定电极的腐蚀形态,及时调整缓蚀剂的加药量。

关 键 词:循环冷却水系统  腐蚀  在线监测装置  凝汽器  汽轮机  电化学极化
文章编号:1004-9649(2003)03-0024-03
修稿时间:2002年12月15

Development and application of an on-line corrosion monitor in circulating cooling-water system
ZHANG Xiu-li ,AN Hong-guang ,XIE Sheng-yuan ,WANG Ying-gao ,WU Shi-hong ,ZHENG Li-qun.Development and application of an on-line corrosion monitor in circulating cooling-water system[J].Electric Power,2003,36(3):24-26.
Authors:ZHANG Xiu-li  AN Hong-guang  XIE Sheng-yuan  WANG Ying-gao  WU Shi-hong  ZHENG Li-qun
Affiliation:ZHANG Xiu-li 1,AN Hong-guang 2,XIE Sheng-yuan 3,WANG Ying-gao 1,WU Shi-hong 2,ZHENG Li-qun 4
Abstract:The theory,configuration and application of an on-line corrosion monitoring system in the circulating cooling-water system of a thermal power plant are introduced in this paper.The monitoring system adopted electrochemical measuring method based on linear and weak polarization.It can directly give the values of annual corrosion rate and polarization resistance of condenser tubes in an actual circulating cooling-water system without Tafel constants known in advance.Technicians on-site can estimate the effects of inhibitors in accordance with measuring results,and outline the corrosion forms of electrodes and adjust the dosages of inhibitors immediately according to changing tendencies of polarization resistance.
Keywords:thermal  power plant  corrosion  on-line monitoring  condenser  circulating cooling-water  electrochemical  polarization  
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