【作者】 王毅；

【导师】 芮晓明；

【作者基本信息】 华北电力大学（北京） ， 热能工程， 2011， 硕士

【摘要】 电站锅炉炉膛出口烟气温度分布的实时化和可视化,对锅炉的经济安全运行具有十分重要的作用。然而,由于电站锅炉炉膛出口处的高温、多粉尘的恶劣环境,至今没有一种十分准确有效的在线检测手段。本文分析了多种常用测温方法,选用红外传感器,从辐射测温的角度出发,设计了一种具有扫描功能的红外测温装置,研究了一种基于红外测温的炉膛出口烟气温度场在线监测系统,并对此展开深入的理论和实验研究,为该方法的工程实际应用提供理论支持和技术指导。本文设计了红外测温系统的总体技术方案,深入研究了红外测温原理,分析了适用于二维温度场重建的各类算法,借助工程数学软件Matlab利用傅里叶正则化算法、高斯正则化算法对典型炉型温度场进行计算机仿真,并进行误差分析。最后、利用红外测温系统对通辽发电总厂1号锅炉进行现场实测试验,借助抽气式热电偶对红外传感器以及红外测温系统测温的准确性进行验证和校核。更多还原

【Abstract】 Online measuring and temperature field reconstruction in the furnace exit gas temperature from boiler has a very important role in boiler’s Security and Economic operation.however,there is not a very accurate and effective means of online measuring in FEGT, because of the environment full of high-temperture and dust in the furnace exit of boiler. With the help of infrared sensor,the article Based on radiation thermometry has designed of a temperature measurement with infrared scanning device and studied an online measuring system which is based on infrared temperature in flue gas. The article had proceeded on more thorough theoretical and experimental researches in those,and had provided theoretical support and technical guidance for the methods in practical application in the engineering.The article designed on the primary scheme of infrared temperature measurement system, researched on the infrared theory a temperature measurement and analysised of the temperature field reconstruction for the various algorithms. It has the aid of the regularization method of Fourier, Gaussian and index to simulate typical furnace temperature and analyze error. The last, it made used of the infrared temperature measurement system to type at Tong Liao power plant and with the help of ermocouple to test and check the temperature values.更多还原