超临界W锅炉启动阶段水冷壁壁温特性分析  

Research on Water Wall Temperature Characteristics of Supercritical W Boiler During Start-up

作　　者：黄晓刚 陈文 曾俊 HUANG Xiao-gang;CHEN Wen;ZENG Jun(China Power International Vinh Tan Operation & Maintenance Engineering Company Ltd.,Pingshun 77028,Vietnam;State Grid Hunan Electric Power Test and Research Institute (Hunan Key Laboratory of Efficient & Clean Thermal Power Generation Technology),Changsha 410007,China)

机构地区：[1]中电永新运营有限公司,平顺77028 [2]国网湖南省电力有限公司电力科学研究院(高效清洁火力发电技术湖南省重点实验室),长沙410007

出　　处：《应用能源技术》2021年第7期46-50,共5页Applied Energy Technology

基　　金：湖南省科技创新平台与人才计划2016TP1027资助;高效清洁火力发电技术湖南省重点实验室开放研究基金项目XDKY-KF-2019-01/XDKY-2019-05资助。

摘　　要：对某超临界W锅炉启动过程中水冷壁壁温特性进行了分析,研究结果表明锅炉下部水冷壁壁温随着负荷的增加而增加,在转直流负荷至380 MW负荷段壁温有一个突升的过程,但一般不出现水冷壁管壁超温现象。沿炉膛高度方向上,上部垂直水冷壁壁温偏差比下部大,W锅炉在直流负荷以上运行时更应注意上部水冷壁的壁温偏差情况,控制水煤比,尤其是控制燃料量的增加速率,这是保证水冷壁安全运行的重要措施。The temperature distribution characteristics of the water wall during the start-up of a supercritical W flame boiler is analyzed.The research results shown that the wall temperature of the lower water wall of the boiler increases with the load.There is a sudden rise in the wall temperature of the stage where the one-through load is transferred to 380 MW load,but there is generally no phenomenon of overheating of the water wall.Along the height of the furnace,there is a phenomenon that the wall temperature deviation in the upper radiation zone is larger than that in the lower radiation zone during the operation.When the W boiler is operating above the one-through load,more attention should be paid to the wall temperature deviation of the upper water wall,to control the water-to-fuel ratio,especially to control the increase rate of fuel,which is an important measurement to ensure the safe operation of the water wall.

关 键 词：水冷壁 “W”锅炉 壁温 超临界 启动 

分 类 号：TK223.3[动力工程及工程热物理—动力机械及工程] TK229.2