1000MW机组旋流燃烧器风量分布特性的数值模拟  

Numerical Simulation on Air Flow Distribution Characteristics for 1 000 MW Swirl Burners

作　　者：吕洪坤[1] 华国钧 童家麟[1] 齐晓娟[1] 

机构地区：[1]国网浙江省电力公司电力科学研究院,浙江杭州310014 [2]浙江省能源集团有限公司,浙江杭州310012

出　　处：《热能动力工程》2017年第1期86-90,共5页Journal of Engineering for Thermal Energy and Power

摘　　要：通过对一台1 000 MW机组的旋流燃烧器进行数值模拟,对其内部的阻力特性和二次风流经各燃烧器的流量分配做了研究。结果表明:对于在实际风量下工作的燃烧器,其阻力系数为定值,且仅与叶片开度有关;同一风箱内,在叶片开度相同的情况下,中间燃烧器的风量略高于两侧燃烧器的风量,偏差大约为5%。通过对叶片角度进行调整,可以达到提高两侧燃烧器风量的目的,研究所得结论可为燃烧器的设计和运行提供参考。The numerical simulationwas employed to investigate the swirl burner of a 1000 MW unit. The resistances of swirl burner and flow characteristics of each burner inside the secondary-air-box were investigated. Analysis results indicated that for the swirl burner with constant air flow,the drag coefficient is a constant,and only related to the opening of the blade. Under the same opening of the blade,the flow rates for the side burners are lower than the middle ones,with the deviation about 5%. Adjusting the opening of the blade can increase the flow rates for the side burners. The numerical simulation results agree well with the field test results. This study is believed to provide a reference for the burner design and operation.

关 键 词：旋流燃烧器 阻力系数 流量分配 优化 

分 类 号：TK223.23[动力工程及工程热物理—动力机械及工程]