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为了给W型火焰锅炉的运行、设计提供科学依据 ,对从法国Stein公司引进的 360MW的W型火焰锅炉 (配备直流缝隙式燃烧器 )进行了冷态模型的空气动力特性研究 .利用热线风速仪测量了炉内的流场速度 ,得出了不同工况下炉内W型气流的流场图以及最佳工况下的风量配置范围 ,对不同工况下流场的气流速度分布规律、气流的充满度、气流行程、炉膛出口处的气流速度偏差等进行了分析 ,研究了炉内空气动力场的特性和变化规律 .研究结果表明 ,形成良好炉内流场的各次风动量流率比的最佳范围为M1∶M2 ∶M3∶M4∶M5 =1∶1 9∶0 .2∶1 .4∶3.6～ 1∶38∶0 .2∶1 .4∶3.6;验证了此种W型火焰锅炉具有不易发生火焰短路以及炉膛出口的气流速度偏差小的特点 ;指出了锅炉存在的结构缺陷 .
In order to provide a scientific basis for the design and operation of the W flame boiler, the aerodynamic characteristics of the cold model of the 360 MW W flame boiler (equipped with a DC slit burner) introduced from Stein Company in France were studied. The hotline anemometer The flow field in the furnace was measured. The flow field of the W-type gas flow in the furnace under different operating conditions and the range of the air volume under the best operating conditions were obtained. The distribution of the flow velocity in the flow field under different operating conditions, The fullness of the air flow, the air flow and the deviation of the air velocity at the exit of the hearth are analyzed, and the characteristics and variation of the aerodynamic field in the furnace are studied.The results show that the air flow rate ratio The best range of M1: M2: M3: M4: M5 = 1: 1 9: 0 .2: 1 .4: 3.6 ~ 1:38:0 .2: 1: 4: 3.6; The flame boiler has the characteristics that the flame short-circuit does not easily occur and the gas flow velocity deviation at the furnace outlet is small. The structural defects existing in the boiler are pointed out.