W型火焰锅炉炉内气流组织优化及模拟研究  

Optimization and Simulation Study on Air Flow in W-Shaped Flame Boiler Furnace

作　　者：申加旭 赛俊聪 李恒阳 秦欢 SHEN Jiaxu;SAI Juncong;LI Hengyang;QIN Huan(Yunnan Electric Power Test and Research Institute(Group)Co.,Ltd.,Kunming 650217,China)

机构地区：[1]云南电力试验研究院(集团)有限公司,云南昆明650217

出　　处：《锅炉技术》2024年第2期27-31,共5页Boiler Technology

摘　　要：利用计算流体力学(CFD)软件,建立W型火焰锅炉数值模型,研究冷态试验前后,炉内气流组织变化以及飞灰冲蚀和炉膛壁面磨损情况。研究结果表明:经冷态试验优化气流组织,可以得到良好的W形态;调平后炉膛内部流场优化,炉膛内部整体磨损情况改善,磨损速率由调平前的4×10^(-6)kg/(m^(2)·s)降低到1.5×10^(-6)kg/(m^(2)·s);合理的气流组织对炉膛壁面的磨损影响较大,调平前波动幅度最大达到25×10^(-7)kg/(m^(2)·s),调平后波动幅度则在5×10^(-7)kg/(m^(2)·s),合理配风是保证炉膛壁面磨损减弱的重要因素。In this paper,the numerical model of W-shaped flame boiler was established by using CFD to study the changes of air flow in the furnace,the fly ash erosion and of furnace wall wear before and after the cold air-dynamic test.The results show that a good W-shape can be obtained by optimizing the air flow in the cold air-dynamic test;After leveling,the flow field inside the furnace was optimized,the overall wear was improved and the wear rate was reduced from 4×10^(-6) kg/(m^(2)·s)to 1.5×10^(-6) kg/(m^(2)·s);The reasonable air flow structure has a great influence on the wear of furnace wall.The maximum fluctuation range before leveling was 25×10^(-7) kg/(m^(2)·s),and the one after leveling was 5×10^(-7) kg/(m^(2)·s).The reasonable air distribution was an important factor to ensure the decrease of furnace wall wear.

关 键 词：W型火焰锅炉 冷态试验 空气动力场 磨损速率 

分 类 号：TK08[动力工程及工程热物理]