| 一种煤粉炉内断面温度场在线监测系统 |
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| 引用本文： | 娄春,周怀春,刘浩.一种煤粉炉内断面温度场在线监测系统[J].电站系统工程,2004,20(2):5-7,10. |
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| 作者姓名： | 娄春 周怀春 刘浩 |
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| 作者单位： | 华中科技大学;华中科技大学;华中科技大学 |
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| 基金项目： | 国家自然科学基金(50176056)，教育部重点科技项目(99081) |
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| 摘 要： | 建立一种基于可见光辐射测温方法的炉膛断面温度场在线监测系统。在锅炉最上层燃烧器之上的某一断面安装4个炉膛火焰探测器,通过对火焰辐射图像的处理,计算出该断面的温度分布。系统能在1s之内完成温度场的计算、显示、数据存储等多项功能。系统经过黑体炉标定,有较高的测量精度。在两台300MW四角切圆煤粉炉上的检测结果表明,锅炉最上层燃烧器以上7m的炉膛断面温度分布呈单峰分布,在炉膛四角存在低温区,与锅炉运行特征相符合,与热电偶的检测结果相比误差小于4%。
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| 关 键 词： | 煤粉燃烧 辐射测温 断面温度场 在线监测 |
| 文章编号： | 1005-006X(2004)02-0005-04 |
An On-line Monitoring System for Cross-section Temperature in Pulverized Coal-fired Furnaces |
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| LOU Chun,ZHOU Huai-chun,LIU Hao.An On-line Monitoring System for Cross-section Temperature in Pulverized Coal-fired Furnaces[J].Power System Engineering,2004,20(2):5-7,10. |
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| Authors: | LOU Chun ZHOU Huai-chun LIU Hao |
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| Abstract: | An on-line monitoring system for cross-section temperature fields in furnace based on radiative temperature measurement is designed. Four flame detectors are installed on a section above combustors region of furnace. Through processing flame radiative image, the temperature fields of the section are detected. In one second, many functions include the calculation, display and data saving can be completed. The system calibrated through blackbody has high precision. The results of two 300MW coal-fired boilers show that temperature distributions of the section above combustors region shows uni-model distribution attribute, and it fits the running characteristic of boiler. Comparing with that of the thermocouple, the error is less than 50℃. |
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| Keywords: | pulverized coal combustion temperature measurement cross-section temperature on-line monitor |
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