Progress of quantitative evaluation of wetness losses in steam turbine

HAN Zhonghe; HAN Xu; LI Peng

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Progress of quantitative evaluation of wetness losses in steam turbine

更新时间：2025-09-28

- Progress of quantitative evaluation of wetness losses in steam turbine
- Thermal Power Generation Issue 1, (2016)
- 作者机构：
  
  华北电力大学电站设备状态监测与控制教育部重点实验室,河北,保定,071003
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK261
- Published Online：15 February 2016，
  
  Published：2016
- 稿件说明：
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HAN Zhonghe, HAN Xu, LI Peng. Progress of quantitative evaluation of wetness losses in steam turbine[J]. Thermal power generation, 2016, (1).
DOI：

HAN Zhonghe, HAN Xu, LI Peng. Progress of quantitative evaluation of wetness losses in steam turbine[J]. Thermal power generation, 2016, (1). DOI：

摘要

汽轮机内汽液两相非平衡凝结、两相间的速度差异、叶片表面形成水膜等均会引起湿汽损失，从而导致机组效率下降和叶片水蚀损坏。对此，本文通过分析比较国内外湿汽损失评估的研究进展，总结了现有的研究方法和目前存在的问题

讨论了湿汽损失系数的影响因素，并对其进行修正。结果表明：湿汽损失可分为热力学损失、水滴阻力损失、制动损失、疏水损失、离心损失和汽轮机出口损失，热力学损失占湿汽损失的80%以上，水滴阻力损失和制动损失所占比例较小；机组类型、盐分含量、运行工况等因素均会对湿汽损失系数产生影响。湿汽损失定量评估为汽轮机通流部分的设计和改造提供了理论参考。

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