喷油螺杆压缩机用油气分离器滤芯出口孔径对分离特性的影响
Influence on the outlet aperture size of the filter element of the oil gas separator on the separation characteristics of the fuel injection screw compressor
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摘要: 采用大涡模拟分三种出口孔径的模型,对喷油螺杆空压机用油气分离器滤芯的一次分离筒内的流场进行了对比分析.结果表明:出口孔径的尺寸对切向速度和轴向速度分布有一定的影响;对自由涡和强制涡区域、上行流下行流的数值、二次流的程度和油滴的分布等均产生一定的影响;综合各项因素可知,2 mm出口孔径有较好的分离效果.Abstract: The large eddy simulation model was divided into three outlet apertures. The flow field in the primary separation cylinder of the oilgas separator filter element for the fuel injection screw air compressor was compared and analyzed. The results showed that the outlet aperture size was tangential speed and axis. It had a certain influence on the velocity distribution;it had certain influence on the free vortex and the forced vortex region, the value of the upstream flow, the degree of the secondary flow and the distribution of the oil droplets. Based on various factors, the 2 mm aperture outlet had a good separation effect.
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