大型发电机内冷却水水质指标的验证研究  

Verification Study on Water Quality Indicators of Cooling Water in Large Generator

作　　者：张明 詹佳佳 瞿子涵 张爽 张莹 陈文 ZHANG Ming;ZHAN Jia-jia;QU Zi-han;ZHANG Shuang;ZHANG Ying;CHEN Wen(State Grid Hubei Electric Power Research Institute)

机构地区：[1]国网湖北省电力有限公司电力科学研究院

出　　处：《标准科学》2024年第S01期240-244,共5页Standard Science

摘　　要：基于发电机或调相机内冷却水的控制工艺,在实验室搭建了动态模拟系统,对内冷却水系统的运行参数指标进行了测试,分贫氧环境和不控制氧含量两个水环境,结合电位-pH图讨论了水质指标对采信标准的具体要求。结果表明,动态除盐水系统中,溶氧量是引起铜试片腐蚀的重要因素,必须作为首要因素进行控制;空气中CO_(2)的溶入会导致水质酸化,大幅增加空芯铜导线的腐蚀风险,标准中应对pH调节加药处理装置进行要求。另外,pH值的无限制提高一方面会带来Cu的碱性腐蚀,另一方面也会威胁发电机运行安全,因此标准中pH值必须设定上限值。A dynamic simulation system was built in the laboratory based on the control process of internal cooling water for generator or condenser.The operating parameter indicators of the internal cooling water system were tested,divided into two water environments:poor oxygen environment and uncontrolled oxygen content.The specific requirements of water quality indicators for acceptance standards were discussed in combination with the potential vs pH diagram.The results indicate that dissolved oxygen is an important factor causing the corrosion of copper specimens in dynamic desalination water systems,and must be controlled as the primary factor.The dissolution of CO_(2) in the air can cause water acidification,significantly increasing the corrosion risk of hollow copper wires.The standard should make requirement for pH adjustment and dosing treatment devices.In addition,the unrestricted increase in pH value will bring about alkaline corrosion of Cu on the one hand,and threaten the safety of generator operation on the other hand.Therefore,an upper limit value must be set for pH value in the standard.

关 键 词：大型发电机 内冷却水 验证试验 腐蚀 

分 类 号：TM31[电气工程—电机]