气固两相分支管流动及流量分配特性的研究

在水平T型分支管道中,用压缩空气对平均粒径为0．5mm砂石进行气固两相流试验。试验结果表明,当压缩空气的流速大于33m／s时,T型分支接头处没有固相沉积,两个分支管路分配的流量几乎相同。当压缩空气的流速小于33m／s时,分支接头处出现沉积,并且沉积量和分支管路的流量分配与分支管路上阀门开度有关:开度相同时,分支接头两侧的固相沉积量和流量分配相同;开度不同时,阀门开度小的一侧分支接头处的沉积量少,其分配的流量也少。

Research on Flow Shape and Distribution of Materials for Branch Pipe in Gas Solid Two Phase Flow

Pneumatic conveying experiment of average particle diameter 0.5 mm sand was carried out u-sing compressed air at horizontal tee branch pipe. The results indicate that when the velocity of compressed air is higher than 33m/s, there is no solid phase sediment in the embranchment tie-in and the flowrates of soild phase in two branch pipes are basically the same. When the velocity of compressed air is lower than 33m/s, there would be solid phase in the embranchment tie-in, the quantity of sediment and the flowrates of two branch pipes relate to the flow valve openings of branch pipe: when the openings are the same, the quantity of the sediment and the flowrates are basically the same. But when the openings are different, the sediment in the embranchment tie-in and the flowrate of solid phase in one branch decrease with the decrease of the valve opening.