超临界压力W火焰锅炉炉膛水冷壁热负荷分布的试验研究  

Experimental Study on Water Wall Heat Load Distribution of Supercritical Pressure W-flame Boilers

作　　者：杨勇 俞谷颖[1] 陈端雨[1] 周文台[1] 杨耀[1] 王璞[1] 李剑平 

机构地区：[1]上海发电设备成套设计研究院,上海200240 [2]云南华电镇雄发电有限公司,云南镇雄657200

出　　处：《动力工程学报》2015年第6期429-436,共8页Journal of Chinese Society of Power Engineering

摘　　要：对某2×600 MW超临界压力变压运行W火焰直流锅炉炉膛水冷壁壁温进行了测量,获得了水冷壁热负荷的分布,并对不同工况下的热负荷进行了分析.结果表明:磨煤机投运方式对炉拱下方冷灰斗区域热负荷的影响较大;启动过程中,下部水冷壁热负荷的分布不均匀,但大部分测点的热负荷维持在400kW/m2以内;在满负荷工况下,热负荷很高且分布不均匀;炉内形成了前墙压后墙的燃烧形式.By measuring the water wall temperature and calculating the heat load in furnace of 2×600MW supercritical pressure W-flame once-through boilers,the heat load distribution was analyzed under different working conditions.Results show that the heat load distribution at lower water wall is highly affected by the mode of coal mill operation;during start-up process,the heat load distribution is not uniform at lower water wall,but most of the heat load is kept within 400kW/m2;under full load conditions,the heat load is high and unevenly distributed;the combustion of front wall is stronger than that of rear wall.

关 键 词：W火焰锅炉 超临界压力 水冷壁 热负荷 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]