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| 600 MW超临界锅炉燃烧器区膜式水冷壁温度场的数值计算 | |
| 引用本文： | 李春燕,阎维平,梁秀俊,黄景立.600 MW超临界锅炉燃烧器区膜式水冷壁温度场的数值计算[J].动力工程,2008,28(5). |
| 作者姓名： | 李春燕 阎维平 梁秀俊 黄景立 |
| 作者单位： | 1. 华北电力大学,机械系,保定,071003 2. 华北电力大学,能源与动力工程学院,教育部电站设备状态监测与控制重点实验室,保定,071003 3. 山西电力科学研究院,太原,030001 |
| 基金项目： | 华北电力大学校科研和教改项目 |
| 摘 要： | 基于有限元法对某电厂600 MW机组锅炉在不同超临界工况下燃烧器区膜式水冷壁的温度场进行了分析和计算.采用双线性四边形单元对水冷壁温度场进行剖分,分区段计算了向火侧的热流密度.依据水冷壁入口和出口工质的实际温度和压力,确定了管内工质温度及管内的对流换热系数,计算了超临界压力下不同工况的水冷壁温度分布,并对造成水冷壁超温的原因进行了分析.对计算结果与实测值进行了比较,误差很小. |
| 关 键 词： | 能源与动力工程 超临界锅炉 膜式水冷壁 有限元 温度场 |
Numerical Calculation of the Temperature Field of Membrane Waterwall in Burner Zone of 600 MW Supercritical Boiler |
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| LI Chun-yan,YAN Wei-ping,LIANG Xiu-jun,HUANG Jing-li.Numerical Calculation of the Temperature Field of Membrane Waterwall in Burner Zone of 600 MW Supercritical Boiler[J].Power Engineering,2008,28(5). | |
| Authors: | LI Chun-yan YAN Wei-ping LIANG Xiu-jun HUANG Jing-li |
| Abstract: | The temperature fields of the membrane waterwall in burner zone of a 600 MW boiler under different supercritical conditions are analyzed and calculated based on finite-element method.Bilinear quadrilateral is used in meshing the temperature field of the waterwall.Heat-flux density of the fire-facing side is sectionalized and calculated.The temperature of the working medium and the heat transfer coefficient in the tube are determined based on the actual temperature and pressure of the inlet medium and outlet medium of the waterwall.The temperature distributions of the waterwall under different supercritical working conditions are calculated.The cause of waterwall overheat is analyzed.The calculated results are compared with the measured values,and the error is small. |
| Keywords: | energy and power engineering supercritical boiler membrane waterwall finite element temperature field |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
