某电厂汽轮机发电机氢气纯度低原因分析及处理  

Cause Analysis and Treatment of Low Hydrogen Purity of Steam Turbine Generator in a Power Plant

作　　者：陈浩 李隆锋 倪仲俊 CHEN Hao;LI Longfeng;NI Zhong jun(Zhejiang Energy Yueqing Power Generation Co.,Ltd.,Wenzhou,Zhejiang Province,320609 China)

机构地区：[1]浙江浙能乐清发电有限责任公司,浙江温州320609

出　　处：《科技资讯》2021年第9期42-45,共4页Science & Technology Information

摘　　要：某电厂660 MW汽轮发电机组自机组投产以来一直存在发电机氢气纯度偏低的情况,不仅影响发电机的效率,还不利于机组的安全运行。该机组系氢冷发电机,配有密封油系统,密封瓦为双流环配置。该文对造成发电机氢气纯度低的原因进行了分析与排查,剖析了密封油系统对氢气纯度的影响。根据分析结果,结合机组检修对相关设备进行了处理、调整、优化,最终取得了较好的效果,同时也为其他同类型电厂提供了经验借鉴。Since the 660 MW steam turbine generator unit of a power plant was put into operation,the hydrogen purity of the generator has been low,which not only affects the efficiency of the generator,but also is not conducive to the safe operation of the unit.The unit is a hydrogen cooled generator,equipped with a sealing oil system,and the sealing pad is of double flow ring configuration.This paper analyzes and investigates the causes of low hydrogen purity of generator,and analyzes the influence of sealing oil system on hydrogen purity.According to the analysis results,combined with the unit maintenance,the relevant equipment was treated,adjusted and optimized,and finally achieved good results.At the same time,it also provides experience for other similar power plants.

关 键 词：氢冷发电机 氢气纯度 双流环密封油系统 密封瓦 分析处理 

分 类 号：TM311[电气工程—电机]