氢气露点仪的选型和改造  

Type Selecting and Reconstructing of Dew Point Hygrometer

作　　者：单文俊[1] 

机构地区：[1]华能南京电厂,江苏南京210035

出　　处：《江苏电机工程》2007年第5期51-53,共3页Jiangsu Electrical Engineering

摘　　要：江苏华能南京电厂氢气露点仪自安装以来,每年当气温超过30℃时,仪表就不能正常工作,露点指示值在负十多度和正十多度之间跳动,影响了运行人员对发电机氢气湿度的监视。通过对露点测量原理的比较和影响湿度原因的分析,基本确定了原露点仪指示波动的原因,并且通过改造解决了这一长期存在的问题。Since the dew point hygrometer was installed in Huaneng Nanjing Power Plant,it has not work well when the air temperature was large than 30℃.The indication value always flopped between-10 ℃ and +10 ℃ and this problem affected the monitoring of the hydrogen humidity of the generators.Through the compare of the principle of dew point measuring and the analysis of the reason of affecting humidity,the reasons of the fluctuate of this dew point hygrometer were confirmed.A reconstruction approach to this dew point hygrometer was used to solve this problem.

关 键 词：发电机 氢气 露点仪 选型 改造 

分 类 号：TH765.5+1[机械工程—仪器科学与技术]