CAJ | 학술논문

采用计算流体力学软件对某300MW四角切圆锅炉机组二次风风箱流场进行分析,以湍动能和出口速度分布均匀性为指标对风箱结构进行数值研究. 结果表明:设置有组合导叶、风箱倒角和蜂窝器的方案有助于减少湍流,增加二次风刚性,保证切圆直径处于中心位置. 改进后的结构出口速度均匀性为原设计的4.6倍,切圆直径与理论值相近.
채용계산류체역학연건대모300MW사각절원과로궤조이차풍풍상류장진행분석,이단동능화출구속도분포균균성위지표대풍상결구진행수치연구. 결과표명:설치유조합도협、풍상도각화봉와기적방안유조우감소단류,증가이차풍강성,보증절원직경처우중심위치. 개진후적결구출구속도균균성위원설계적4.6배,절원직경여이론치상근.
Through making use of CFD software, the flow field of the secondary air bellows in a 300MW cor-ner tangential boiler was analyzed and both turbulence energy and exit velocity uniformity were taken to investi-gate the bellows' structure to show that, the structure which boasting of the combined guide vanes, chamber and honeycombs can reduce the turbulence and increase the rigidity of secondary air and ensure the circle di-ameter in the center.The exit velocity uniformity of bellows improved is 4.6 times that of the former design and the circle diameter is close to the theoretical value.