1000MW超超临界塔式锅炉炉内水冷壁壁温计算研究  

Calculation on Water Wall Temperature in the Furnace of a 1000 MW Ultra-supercritical Tower Boiler

作　　者：朱明[1] 张忠孝[1] 周托[1] 赵超[1] 滕叶[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《动力工程学报》2012年第1期1-9,共9页Journal of Chinese Society of Power Engineering

摘　　要：以某电厂1 000 MW超超临界塔式锅炉为研究对象,在一维分区的计算基础上,对炉内主燃烧区域进行分区,在满足工程需要的基础上简化了辐射传热模型和管内换热模型,对炉内主燃烧区进行变工况研究得出水冷壁壁温分布,并且与实测数据进行比较验证.结果表明:水冷壁壁温沿炉膛高度方向呈现双峰,沿炉膛宽度方向则呈中间高两边低的趋势;随着负荷降低,水冷壁壁温降低;模型计算数据与实测数据相比,均方根误差最大为5.38%;该模型可以预测水冷壁壁温分布,为锅炉设计和实际运行提拱技术支持.Taking the 1 000 MW ultra supercritical tower boiler in a certain power plant as an object of study,based on calculation results of one-dimensional section,the water wall temperature distribution was obtained under varying working conditions,by dividing the primary combustion zone,simplifying the model of heat radiation in furnace and of heat transfer in tube,under premise that relevant engineering requirements were satisfied.The temperature distribution was compared with actual measurements later on.Results show that the water wall temperature forms two peaks along the height direction of furnace,whereas along the width direction,the peak of temperature wave appears in the furnace center.The water wall temperature drops with reducing load.Since the root-mean-square error between calculated data and actual measurements is not more than 5.83%,the model can be used to predict the distribution of water wall temperature.This may serve as a reference for design and operation of similar boilers.

关 键 词：超超临界 塔式锅炉 热负荷 水冷壁壁温 一维分区 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]