1000MW超超临界塔式锅炉炉内水冷壁壁温计算研究.pdf

32 1 动 力 工 程 学 报 Vol. 32 No. 1 2012 1 Journal of Chinese Society of Power Engineering Jan. 2012 11 :1674-7607( 2012)01-0001-09 :TK229.2 : A : 470. 30 1 000 MW 朱 明, 张忠孝, 周 托, 赵 超, 滕 叶 ( , 200093) : 以某电厂1 000 MW 超超临界塔式锅炉为研究对 , 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 . : 超超临界; 塔式锅炉; 热负荷; 水冷壁壁温; 一维分区 Calculation on Water Wall Temperature in the Furnace of a 1 000 MW Ultra-supercritical Tower Boiler ZH UMing, ZHANGZhong-xiao, ZHOUTuo, ZHAOChao, TENG Ye (School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China) Abstract: 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 mod- el of heat radiation in furnace and of heat transfer in tube, under premise that relevant engineering require- ments were satisfied. The temperature distribution was compared with actual measurements later on. Re- sults show that the water wall temperature forms two peaks along theheight 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 theroot-mean-square error between calculated data and actual measurements is not more than 5. 83%, the model can be used to predic