汽轮发电机组密封油系统的异常情况分析及预防措施.doc

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汽轮发电机组密封油系统的异常情况分析及预防措施,                 摘 要   发电机密封油系统做为汽轮发电机组中一个主要系统,如果运行不稳定,将造成漏氢或发电机内部进油的情况发生,同类型机组甚至出现着火的事故。   许昌电厂2×210mw汽轮发电机组在新机组试运初期,由于对密封油系统故障分析不彻底,连续多...
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汽轮发电机组密封油系统的异常情况分析及预防措施

                 摘     要

   发电机密封油系统做为汽轮发电机组中一个主要系统,如果运行不稳定,将造成漏氢或发电机内部进油的情况发生,同类型机组甚至出现着火的事故。
   许昌电厂2×210MW汽轮发电机组在新机组试运初期,由于对密封油系统故障分析不彻底,连续多次解体检查平衡阀,增加了运行、维护劳动量,但是效果并不明显。通过运行专业进行数据采集,对发电机密封油系统温度、压力、油箱油位、平衡阀异常情况详细记录,进行科学的逻辑分析与推理,准确判断出设备故障,为检修工作指明了方向,大大降低了检修劳动强度,提高工作效率,确保了机组安全、稳定、经济运行。同时为国内同类型机组运行及维护起到一定的借鉴作用。
 
关键词:发电机组密封油系统 ,异常情况 ,分析,预防措施。 


 

Analysis and Preventive measures for the Abnormalities of Turbo Generator Sealing Oil System
Abstract
   Generator sealing oil system for turbine generator unit of a main system, if the operation is not stable, will cause the hydrogen leakage or generator internal oil inlet condition occurs, the same type of unit or even fire accident.
   The Xuchang power plant 2 210MW turbo-generator in trial operation of new unit early, due to the sealing oil system fault analysis is not thorough, successive inspection balance valve, increased operation, maintenance work, but the effect is not obvious. By running the professional data collection, to the sealing oil system of the generator temperature, pressure, oil tank level, balance valve anomalies recorded in detail, undertake scientific analysis and logic reasoning, accurate judgement of equipment fault, for overhaul job points to clear direction, greatly reduces the labor intensity of maintenance, improve work efficiency, ensure the safety, stability of unit, economic operation. At the same time for the same type of domestic plant operation and maintenance play a certain reference role.
Key words: generator sealing oil system, abnormal condition, analysis, preventive measures.

 

目    录
中文摘要…………………………………………………………………………………….Ⅰ
1. 绪论……………………………………………………………………………………… 1
  1.1 课题的背景及意义............................................................ 1
  1.2本论文主要研究内容...................................................1
2. 210MW汽轮发电机组设备简介.....................................2
3.发电机密封油系统的运行技术要点................................. 7
  3.1 启动前的准备、检查及恢复.................................................. 7
  3.2密封油系统投运.............................................................. 7
  3.3密封油的维护:............................................................... 8
  3.4密封油系统停止.............................................................. 8
  3.5对氢侧回油箱异常情况的分析密封油系统..................................... 8
4.发电机密封瓦磨损情况及分析  ...................................... 11
  4.1 #1机发电机密封瓦异常情况..................................................11
  4.2停机后维护人员检查结果.....................................................11
  4.3氢侧汽端回油温度异常情况分析:.............................................11
  4.4空侧汽端油压变化情况分析.................................................. 12
  4.5对氢侧回油箱异常情况的分析................................................ 12
  4.6对发电机氢气补充量异常情况分析............................................13
  4.7对发电机密封瓦磨损情况总结分析............................................13
5.防止发电机密封瓦磨损采取措施........................................14
  5.1检修方面.................................................................... 14
  5.2运行操作方面................................................................14
6. 结论..........................................................................16
参考文献........................................................................ 17
致谢...............................................................................18