Based on analyzing the mechanism of filtration, some parameters which affect the filtration efficiency, pressure drop or residual pressure drop, such as structure of the mesh, cycle index, filtration velocity, fluid concentration and temperature, compressibility of filter cake, maximum permission pressure drop and backflowing pressure, are discus.
在分析过滤机理的基础上,从过滤效率、压降、残余压降三个方面,分析了过滤器性能的影响因素,包括丝网结构、循环次数、过滤速度、流体浓度及温度、颗粒粒径、滤饼的可压缩性、最大允许压降、反吹压力等。
The test results show that in the initial period of the filtration cycle,the residual pressure drop of the filter increases rapidly,and then increases slowly.
实验结果表明,过滤循环初始阶段滤管残余压降上升较快,随后上升趋势逐渐变缓;随着温度的升高,滤管的初始压降升高,形成的粉尘层也越疏松。
Taking the air-jet vacuum pump as the research object and utilizing the software of FLUENT to simulate the flow field of air-jet vacuum, in a certain operating condition, the influences of five structure parameters on the remaining pressure in air-jet vacuum pump are obtained.
以空气射流真空器为研究对象,采用FLUENT软件对其内部流场进行数值模拟,得出在一定的工况下,空气射流真空器5个结构参数对其残余压强的影响情况。
In a certain operating condition,the influences of the structure parameters ratio of areas,angle of mixing section,distance between nozzle exit and inlet of throat section,length of throat section,and angle of(diffuser) section on the remaining pressure in air-jet vacuum pump are analyzed.
分析了一定工况下,面积比、吸入段锥角、喉嘴距、喉管长度和扩散段锥角对空气射流真空器残余压强的影响,得到较优的结构参数,为空气射流真空器的设计和研究提供一定的理论支持。
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