玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (8): 82-86.

• 应用研究 • 上一篇    下一篇

燃煤电厂湿法脱硫玻璃钢烟道振动频率分析及实验研究

申智勇,马修元*   

  1. 国电环境保护研究院有限公司,南京210031
  • 收稿日期:2019-03-18 出版日期:2019-08-28 发布日期:2019-08-28
  • 通讯作者: 马修元(1984-),男,博士,高级工程师,主要从事燃煤电厂环保设备开发及应用方面的研究,mxy4815@163.com。
  • 作者简介:申智勇(1969-),男,学士,高级工程师,主要从事燃煤电厂环保设备开发及应用方面的研究。
  • 基金资助:
    国家重点研发计划项目(2017YFC0210200)

VIBRATION FREQUENCY ANALYSIS AND EXPERIMENTAL STUDY OF WET DESULFURIZATION FRP FLUE IN COAL-FIRED POWER PLANT

SHEN Zhi-yong, MA Xiu-yuan*   

  1. State Power Environmental Protection Research Institute, Nanjing 210031, China
  • Received:2019-03-18 Online:2019-08-28 Published:2019-08-28

摘要: 玻璃钢烟道在燃煤电厂湿法脱硫系统逐渐得到应用与推广,然而针对玻璃钢烟道的振动设计还没有规范,且钢结构的振动计算规范也不适用于玻璃钢烟道。因此,有必要对玻璃钢烟道振动进行分析,掌握玻璃钢烟道结构和振动之间的规律,提出烟道加固肋中心距与振动的关系;一方面,将烟道复合材料壁板弯曲视为薄板大挠度弯曲,采用Mindlin理论得到了玻璃钢烟道壁板的振动方程,推导了烟道加固肋间距与频率的关系;另一方面,对层合板进行了振动模态实验。结果表明,钢烟道技术规程和Mindlin理论计算结果与实验结果相比,误差分别为5.51%和2.47%。Mindlin理论计算结果误差较小,显著提高了玻璃钢的烟道设计精度。

关键词: 玻璃钢, 振动, 模态分析, 烟道

Abstract: The FRP flue duct is gradually applied and popularized in the coal-fired power plant wet desulfurization system. However, there is no vibration calculation specification for FRP flue duct design, and the vibration calculation specification of the steel structure is not applicable to the FRP flue duct. Therefore, it is necessary to analyze the vibration of FRP flue duct, obtain the law between FRP flue duct structure and vibration, and propose the relationship between the center distance of the flue duct reinforcement rib and vibration. In this paper, the bending of the flue duct composite panel is regarded as the large deflection of the thin plate. The vibration equation of FRP flue duct wall is obtained by Mindlin theory, and the relationship between the center distance and frequency of flue duct reinforcement rib is derived. On the other hand, the vibration mode experiment was performed on the laminate. The results show that the steel flue duct technical specifications and Mindlin theoretical calculation results are 5.51% and 2.47% compared with the experimental results. The error of Mindlin′s theoretical calculation results is smaller, which significantly improves the design accuracy of FRP flue duct.

Key words: FRP, vibration, modal analysis, flue duct

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