作者：王东风, 刘千

作者单位：华北电力大学自动化系, 河北 保定 071003

关键词：炉膛温度; 温度场重建; 测量方法

摘要：

该文介绍热电偶测温、CO2红外光谱测温、光纤测温、辐射能测温、声波测温等温度测量方法的原理及其所存在的问题,分析一种基于激光吸收光谱的炉膛测温技术及其系统构成。在某电厂的应用表明,基于激光吸收光谱的测温系统能够对炉膛温度场进行比较精确的测量。测量结果可指导操作人员通过调节相应的二次风门开度等手段来调整锅炉燃烧,使煤粉在炉膛内燃烧均匀,温度场居中分布,从而有效地提高锅炉燃烧效率。

Development of measuring technique for furnace temperature in power plant boilers

WANG Dong-feng, LIU Qian

Department of Automation, North China Electric Power University, Baoding 071003, China

Abstract: Several commonly-used temperature measuring methods(including thermocouple, CO₂ infrared spectrum measurement, optical fiber thermometric system, infrared radiation temperature measurement, and acoustic temperature measurement) and their advantages and disadvantages were summarized. A kind of boiler furnace temperature measuring technology based on laser absorption spectroscopy was introduced. The measuring structure of the system was presented. The application shows that the temperature field in a boiler furnace can be precisely measured by the temperature measurement system, which can guide the operation engineer to regulate secondary air to achieve equilibrium combustion. As a result, boiler combustion efficiency will be increased.

Keywords: furnace temperature; temperature field reconstruction; measurement method

2014, 40(3): 8-12  收稿日期: 2013-10-14;收到修改稿日期: 2013-12-16

基金项目: 中央高校基本科研业务费专项(11MG49)

作者简介: 王东风(1971-),男,教授,博士,主要从事热工测量与热工控制研究。

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