作　　者： ; ; ;

机构地区： 上海理工大学能源与动力工程学院

出　　处： 《上海第二工业大学学报》 2006年第2期107-111,共5页

摘　　要： 在水平T型分支管道中,用压缩空气对平均粒径为0.25 mm砂石进行气力输送试验。通过试验,当输送气速和分支管路流量控制阀开度变化时,对分支管路各自的阻力特性和固相颗粒在各分支管路中的流量分配特性进行了研究。结果表明,在发送压力保持不变的情况下,随着表观气速的减小,气固两相流在各分支管路单位长度上的压差,当开始时逐渐减小;但当气速下降到一定程度后,各分支管路单位长度压差转而增大;当各分支管路流量控制阀的开度差值变大时,分支管路各自的单位长度压差曲线逐渐远离,而固相颗粒在分支管路中的流量分配情况也发生较大变化。 Pneumatic conveying experiment of average particle diameter 0.25 mm sand is camed out using compress air at horizontal tee branch pipe. The paper investigated the flow distribution of solid phase and the respective resistance properties of branch pipes when both conveying velocity and the flow valve opening of branch pipe are changed. The result shows that when the operation pressure keep to a constant value, with the conveying velocity is decreased, the respective unit length pressure drop declines at first, but when the conveying velocity reduces to some extent, the respective pressure drop begins to rise. When the flow valve opening of branch pipe is visible difference, it is found that the pressure drop curve of the respective branch pipe is away from each other, and the flow distribution ratio of solid phase in the branch pipe has some obvious changes.

关 键 词： 气固两相流 分支管路 试验研究 阻力特性 流量分配

领　　域： [机械工程] [化学工程]