大型火电机组加热器动态数学模型的研究.pdfVIP

第 43 卷 第 6 期 汽 　轮 　机 　技 　术 Vol . 43 No . 6 2001 年 12 月 TURBINE TECHNOLOGY Dec . 2001 大型火电机组加热器动态数学模型的研究 赵文升 ,王兵树 ,马良玉 ,崔 　凝 ,高建强 (华北电力大学 ,保定 河北 071003) 摘要 : 以在大型火电机组中广泛使用的三段式加热器为研究对象 ,充分考虑了加热器结构参数和工质物性参数对 传热过程的影响以及静态计算与动态数学模型间的差别 ,建立了加热器动态数学模型 。仿真实验与工程应用证明 该模型具有较高的静态计算精度和良好的动态响应特性 ,具有较广泛的适用性和一定的工程应用价值 。 关键词 :加热器 ;动态数学模型 ;仿真 ( ) 分类号 :TK264 . 9 　　　文献标识码 :A 　　　文章编号 :1001 - 5884 2001 06 - 0324 - 04 Research on Dynamic Mathematical Model of the Heater for Large Thermal Power Unit ZHAO Wensheng , WAN G Bingshu , MA Liangyu , CUI Ning , GAO Jianqiang (North China Electric Power University , Baoding Hebei 071003 China) Abstract :The three - section feedwater heaters , which are widely used in the large thermal power unit , are taken as the obj ect to be invested . The dynamic mathematical model of the heater is built by investigating deeply on the structure , the operating charac teristic and the heat transfer theories of the heaters . The heater construction parameters and the physical property of the working medium are fully considered in the model . The difference between the static calculation formula and the dynamic model is also considered . The static accuracy and dynamic performance of the mathematic model of the heater are verified by detailed simulation tests and by practical engineering application . Key words : heater ; dynamic mathematical model ; simulation 加热器换热各种因素如流动状态 、流体物性参数 、表面状况 0 　前 　言 等因素的影响的分析 ,在传热计算中 ,充分考虑了工质的物