Effect of abnormal deflection of the second stage rotor blade on stall of axial fan

ZHANG Lei; QU Yaopeng; WANG Songling; DENG Yuhan; LI Kang

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Effect of abnormal deflection of the second stage rotor blade on stall of axial fan

Thermal Power Generation Issue 6, (2017)

更新时间：2025-09-28

- Effect of abnormal deflection of the second stage rotor blade on stall of axial fan
- 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： TK83
- Published Online：30 June 2017，
  
  Published：2017
- 稿件说明：
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ZHANG Lei, QU Yaopeng, WANG Songling, et al. Effect of abnormal deflection of the second stage rotor blade on stall of axial fan[J]. Thermal Power Generation, 2017, (6).
DOI：

ZHANG Lei, QU Yaopeng, WANG Songling, et al. Effect of abnormal deflection of the second stage rotor blade on stall of axial fan[J]. Thermal Power Generation, 2017, (6). DOI：

摘要

动叶可调式轴流风机叶片角度异常偏转时可能会诱发轴流风机失速。为了探讨这种影响规律，本文以两级动叶可调式轴流风机为研究对象，对第二级动叶轮中2个相邻叶片异常偏转角为+9°时轴流风机内的失速现象进行非定常数值模拟。结果表明：虽然叶片偏转降低了轴流风机的出口静压，但使轴流风机的稳定运行范围有所增加；失速先兆最先出现在第二级动叶片前缘叶顶；带有异常叶片和正常叶片的轴流风机内均经历了失速先兆的产生、发展、合并，最后演化为完整的失速团4个阶段；异常叶片的周向分布规律与正常叶片相同，均为周向均匀分布；异常叶片使失速先兆数量和演化为失速团的时间增加，虽然失速团数量没变，但生成的失速团的影响范围较正常轴流风机有所减小。

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