华电技术 ›› 2010, Vol. 32 ›› Issue (2): 51-53.

• 技术交流 • 上一篇    下一篇

国产引进型300MW汽轮机通流部分的改造

段永成   

  1. 国华太仓发电有限公司,江苏太仓215433
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-02-25

Reformation of flow path of 300MW domestic unit manufactured using introduced technique

DUAN Yongcheng   

  1. Guohua Taicang Power Generation Corporation Limited, Taicang 215433, China
  • Received:1900-01-01 Revised:1900-01-01 Published:2010-02-25

摘要: 国产引进型300MW机组经常出现高压缸效率低和轴封漏汽量大的故障,影响了机组运行的经济性。介绍了300MW机组通流部分采用布莱登汽封和蜂窝汽封相结合的改造方法,对改造前、后的性能数据进行了比较,得出了合理使用新型汽封模式且有利于改善和提高机组性能的结论。

关键词: 高压缸效率, 通流间隙数据, 热耗, 轴封漏汽, 300MW汽轮机

Abstract: The faults of lower efficiency of HP casing and larger steam leakage were often occurred in domestic 300MW unit manufactured using introduced technique, and the economical efficiency of unit operation had been influenced. A reformation scheme of flow path of 300MW unit was introduced, in which the combinations of Brandon steam gland and honeycomb gland was adopted. The performance data of the unit before and after reformation were compared each other, and the conclusion obtained is that using newstyle gland rationally can improve the unit performance.

Key words: Key words:efficiency of HP casing, data of flow path, heat rate, steam leakage of shaft gland, 300MW steam turbine