华电技术 ›› 2009, Vol. 31 ›› Issue (10): 16-18.

• 专题综述 • 上一篇    下一篇

600MW超临界汽轮机热耗率偏高的原因分析

马士东   

  1. 安徽华电宿州发电有限公司,安徽宿州 234101
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-10-25

Reason of higher heat rate of the 600MW supercritical turbine

MA Shidong   

  1. Anhui Huadian Suzhou Power Generation Corporation Limited, Suzhou 234101, China
  • Received:1900-01-01 Revised:1900-01-01 Published:2009-10-25

摘要: 某电厂#2机组自投产以来,机组各项经济指标及热耗率一直偏高于设计值,机组效率达不到设计要求。为此,在#2机组大修前进行了汽轮机热力性能试验,计算得到了汽轮机在 3VWO,450MW,300MW 3个工况下的热耗率和高中压缸效率。找出了#2机汽机热耗率偏高原因,提出了优化措施,为#2机组大修和技术改造提供了参考依据。

关键词: 超临界汽轮机组, 热耗率, 试验工况, 试验数据, 原因分析, 优化措施

Abstract: Since the No.2 unit of a power plant was put into production, the economical indicators and the heat rate always were higher than the design values, and the unit efficiency was not reached to the design demand. Therefore, the turbine thermodynamic performance test was carried out before No.2 unit overhaul, and the turbine heat rate and the efficiency of high pressure cylinder and middle pressure cylinder under three operation conditions of 3VWO, 450MW and 300MW were obtained by calculation. Then the reason of higher heat rate of No.2 unit turbine had been found, and some optimization measures were proposed providing reference for overhaul and technical reformation of No.2 unit.

Key words: supercritical turbine set, heat rate, test condition, test data, reason analysis, optimization measure