双钩波形板汽水分离器的数值研究  

Numerical Study of Corrugated Plate Moisture Separator with Double Hook

作　　者：伍文明 郑晓敏 何开俊 黄南云 夏潘 贺铸[2] WU Wenming;ZHENG Xiaomin;HE Kaijun;HUANG Nanyun;XIA Pan;HE Zhu(Hubei Defon Heat Exchanger Co.Ltd.,Huangshi 435106,Hubei,China;School of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]湖北迪峰换热器股份有限公司,湖北黄石435106 [2]武汉科技大学材料学部,武汉430081

出　　处：《科技和产业》2025年第4期64-70,共7页Science Technology and Industry

摘　　要：对两种不同疏水钩结构的双钩波形板汽水分离器进行了数值研究,运用计算流体力学方法构建了波形板内部的气液两相流动模型。采用剪切应力输运k-omega(k-omega SST)模型和离散相(DPM)模型,在不同入口速度条件下,对两种波形板的分离效率和压降进行了对比分析。结果表明:大粒径液滴在惯性作用下会撞击分离器壁面直接被分离,而小粒径液滴其惯性力较小,运动轨迹与主流相近,会随主流一起运动,难以被捕捉;疏水钩结构会产生一定的涡流,从而对流场的局部气流流速有一定的影响,主流气相会带入一部分液滴,增加其脱除效率;当SH型和N型波形板入口速度分别大于4 m/s和6 m/s时,粒径大于8μm的液滴的分离效率能达到100%;当两种波形板的总体分离效率达到84%时,N型波形板损失的能量约为SH型波形板的2倍。综合对比了两种双钩波形板汽水分离器的压降和分离效率,对其结构的异同、性能的优劣进行了综合分析。Two kinds of double-hooked corrugated plate moisture separators with different draining hook structures were numerically investigated,and the gas-liquid two-phase flow model inside the corrugated plates was constructed by using computational fluid dynamics methods.The separation efficiency and pressure drop of the two corrugated plates were comparatively analyzed using the shear stress transport k-ω(SST k-ω)model and the discrete phase model(DPM)under different inlet velocity conditions.The results show that large-size droplets will be separated directly by impacting the separator wall under the effect of inertia,while small-size droplets with smaller inertia force and similar trajectory to the main stream will move with the main stream and are difficult to be captured.The draining hook structure will produce a certain amount of vortex,which will have a certain effect on the local gas flow rate of the flow field,and the main stream gas phase will bring in a portion of the droplets to increase its removal efficiency.When the inlet velocities of the SH-type and N-type corrugated plate are greater than 4 m/s and 6 m/s,respectively,the separation efficiency of the droplets with a particle size larger than 8μm can reach 100%.When the overall separation efficiency of the two types of corrugated plates reaches 84%,the energy loss of the N-type corrugated plate is about twice as much as that of the SH-type corrugated plate.Comprehensive comparison of the pressure drop and separation efficiency of the two types of corrugated plate moisture separators with double hook,the similarities and differences in their structures,performance advantages and disadvantages were studied and analyzed.

关 键 词：汽水分离器 疏水钩 波形板 压降 分离效率 数值模拟 

分 类 号：O359.1[理学—流体力学]