虑水器出入口结构动力学特性研究

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利用两相流理论建立了虑水器内水和渣粒的分离模型,研究了虑水器不同入口结构和虑水器入口与出口的相对关系,获得了相应的两相流速度与浓度的分布。分析比较的结果表明：虑水器入口采用侧边旋流和逆向排渣方式能实现离心分离和流体的自冲刷作用,更有利于分散相颗粒与连续相的分离;从虑水器入口与出口的位置关系上来看,流体从虑水器侧下方进入并从侧上方流出的分离效果更好;同时,在虑水器出口上方宜留出一定空间,以利于分散相颗粒的汇聚,对于分散相颗粒密度相对连续相较大的情况,虑水器的下方应增设重相排出口。 Two-phase flow theory was utilized to set up water and slag particles separation model inside water strainer,then the filter inlets and the relative relationship between the inlet and outlet was studied,and the corresponding two-phase flow rate and the concentration distribution were obtained.It is shown that,inlet of the strainer adopts the reverse slagging and side cyclone methods to achieve centrifugal separation and self-scouring effect of the fluid,which is more conducive to the dispersed particles and continuous phase separation;From the filter inlet and outlet position relationship point of view,taking into account the water entering from the side into the bottom and out from the top side is more reasonable and effective;At the top of the water strainer exports should leave some space in order to facilitate the collection of the dispersed phase particles.For the dispersed phase particle density is relatively large,heavy phase outlet should be added at the bottom of water strainer.