Reason analysis for fracture occurred in axial induced draft fan blade of a 600 MW unit

GU Weiwei; ZHANG Yonghai; LI Yuan; YU Xiaobing; SHI Zhigang

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Reason analysis for fracture occurred in axial induced draft fan blade of a 600 MW unit

Thermal Power Generation Issue 11, (2017)

更新时间：2025-09-28

- Reason analysis for fracture occurred in axial induced draft fan blade of a 600 MW unit
- 作者机构：
  
  1. 西安西热节能技术有限公司,陕西,西安,710054
  2. ,陕西,西安,710032
  3. 西安热工研究院有限公司,陕西,西安,710032
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK05
- Published Online：27 November 2017，
  
  Published：2017
- 稿件说明：
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GU Weiwei, ZHANG Yonghai, LI Yuan, et al. Reason analysis for fracture occurred in axial induced draft fan blade of a 600 MW unit[J]. Thermal Power Generation, 2017, (11).
DOI：

GU Weiwei, ZHANG Yonghai, LI Yuan, et al. Reason analysis for fracture occurred in axial induced draft fan blade of a 600 MW unit[J]. Thermal Power Generation, 2017, (11). DOI：

摘要

某电厂600 MW机组轴流引风机叶片断裂，为此对故障现场及机组运行历史数据进行了调查分析，对断裂叶片的材料进行了理化检验和断口分析，并对叶片的离心应力和振动特性进行了有限元分析。结果表明：叶片断裂与基体材料的质量无直接关系；叶片静强度和振动特性满足设计标准；叶片断裂的主要原因是叶片涂层质量不良或工艺不当，导致叶片表面在投运前存在微裂纹或运行中产生微裂纹，在离心应力和气流动应力作用下发生了高周疲劳断裂。

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