涡流式分离器气液两相分离数值模拟研究  

Numerical Simulation of Gas-liquid Two-phase Separation in Vortex Separator

作　　者：张泽楷 张婷婷 尹莎莎 尹俊连 王德忠[1] Zhang Zekai;Zhang Tingting;Yin Shasha;Yin Junlian;Wang Dezhong(School of Nuclear Science and Engineering,Shanghai Jiao Tong University,Shanghai,200240,China;Marine Design&Research Institute of China,Shanghai,200011,China;Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]上海交通大学核科学与工程学院,上海200240 [2]中国船舶与海洋工程设计研究院,上海200011 [3]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《核动力工程》2022年第6期201-208,共8页Nuclear Power Engineering

基　　金：中国核动力研究设计院核反应堆系统设计技术重点实验室基金(HT-KFKT-02-2020001)。

摘　　要：对于气液两相分离,传统分离器或体积过大,或旋流强度低,因此考虑提出一种新式的涡流式分离器。利用涡流二极管逆向流动形成强度较高旋流的特点,在旋流腔上方加入一根支管,从切向入口进入的两相流由于密度差和旋流的作用,气相会聚集在中心由于浮力作用从上支管流出分离器,液相会分布在四周由于重力作用从下支管流出分离器,从而实现两相分离。采用数值模拟的方式分别对不同旋流腔尺寸以及出口形状的分离器进行计算,模拟结果表明,在进口流量为0.5 t/h、入口含气率1%~5%工况下,控制底流口压力和入口相同,溢流口与入口压差在80~90 kPa范围内,分离器对粒径在50~100μm的气泡分离效率可以达到90%以上。For gas-liquid two-phase separation,traditional separators are either too large in volume or low in swirling intensity.So a new type of cyclone separator is proposed.Utilizing the reverse flow of vortex diode to form a high-strength swirling flow,a branch pipe is added above the swirling chamber.For the two-phase flow entering from the tangential inlet,due to the density difference and swirling flow,the gas phase will gather in the center and flow out of the separator from the upper branch pipe due to buoyancy,and the liquid phase will be distributed around the separator from the lower branch pipe due to gravity,thus realizing the separation of the two phases.The separators with different swirling chamber sizes and outlet shapes are calculated by numerical simulation.The simulation results show that under the working condition that the inlet flow is 0.5 t/h and the inlet air content is 1%~5%,the pressure at the control underflow port is the same as that at the inlet,the pressure difference between the overflow port and the inlet is 80~90 kPa,and the separation efficiency of the separator for bubbles with a diameter of 50μm and 100μm can be above 90%.

关 键 词：气体脱除 旋流式分离器 涡流二极管 数值模拟 

分 类 号：TL334[核科学技术—核技术及应用]