吉林大学学报(工学版) ›› 2012, Vol. 42 ›› Issue (01): 39-45.

• 论文 • 上一篇    下一篇

锅炉过热器/再热器管道热流密度的评估方法

徐鸿, 赵志渊, 林振娴   

  1. 华北电力大学 能源动力与机械工程学院,北京 102206
  • 收稿日期:2010-03-12 出版日期:2012-01-01 发布日期:2012-01-01
  • 作者简介:徐鸿(1959-),男,教授.研究方向:锅炉受热面管道蒸汽侧氧化和管道剩余寿命评估. E-mail:xuhong@ncepu.edu.cn
  • 基金资助:

    中央高校基本科研业务费专项项目(09QX61).

Assessment method for heat flux of superheater/reheater tubes

XU Hong, ZHAO Zhi-yuan, LIN Zhen-xian   

  1. School of Energy,Power and Mechanical Engineering, North China Electricity Power University, Beijing 102206,China
  • Received:2010-03-12 Online:2012-01-01 Published:2012-01-01

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摘要：

通过建立数值模型进行编程计算,分析了锅炉过热器/再热器管道在不同的管道几何尺寸、烟气温度、蒸汽流量和温度下,各个界面热流密度的变化情况。通过回归分析得到了热流密度与管道内壁侧氧化层厚度和运行时间的关系表达式,即热流密度的评估关系式。

关键词: 动力机械工程, 锅炉过热器, 再热器, 热流密度, 氧化层, 运行时间, 评估

Abstract:

The changes of the heat fluxes on interfaces of the superheater/reheater tubes with different tube geometries, flue gas temperatures, steam flows and temperatures were analyzed using the established numerical model and the corresponding program. The relationship expressions of the heat flux versus the tube imner-wall oxide scale thickness and operation time were obtained by regression analyses. The results provide a theoretical basis for the design and operation of the power plant.

Key words: power machniery and engineering, superheater, reheater, heat flux, oxide scale, operation time, assessment

中图分类号: 

  • TK224.9


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