摘要
针对旋叶式压缩机油气分离器对小直径油滴分离效率较低的问题,提出了一种新型的二级油气分离管结构。基于SST k-ω湍流模型和DPM离散相模型,建立了油气分离器多相流数值模型,分析了流场速度分布与油滴运动轨迹,研究了离心式油气分离器分离效率的规律,提出了分离器结构改进的方案(即在分离器主排气管中增设二级分离管,增加油滴与壁面碰撞几率,进而增加油气分离效率);搭建了离心式油气分离器油滴标定试验台,开展了离心式油气分离器油滴分离试验研究。研究结果表明:新型二级分离管对各直径油滴分离效率均有提升,尤其对小直径油滴分离效率提升近20%,优化结果有效地解决了分离器对小直径油滴分离效果差的问题。
In order to solve the problem of low separation efficiency of small diameter oil droplets by oil-gas separator used in rotary vane compressor,a new two-stage oil-gas separation pipe structure was proposed.Firstly,based on the SST k-ωturbulence model and the discrete phase model(DPM),the numerical model of multiphase flow in the oil-gas separator was established.The velocity distribution of the flow field and the movement trajectory of oil droplets were analyzed.The law of separation efficiency of centrifugal oil-gas separator was studied,and the scheme for improving the separator structure was proposed,in which a secondary separation pipe was added in the main exhaust pipe of the separator to increase the collision probability between oil droplets and the wall surface and thus increase the oil-gas separation efficiency.A calibration test bench for oil droplets in a centrifugal oil-gas separator was built,and experimental research on oil droplet separation in a centrifugal oil-gas separator was conducted.The research results show that the newly established secondary separation pipe has improved the separation efficiency of oil droplets of various diameters,especially for small diameter oil droplets,with an increase of nearly 20%.The problem of poor separation effect of the separator for oil droplets of small diameters has been effectively solved by the optimization results.
作者
刘进
何泽银
陶平安
刘红梅
向银
冉志祥
IU Jin;HE Zeyin;TAO Ping'an;LIU Hongmei;XIANG Yin;RAN Zhixiang(Institute of Automotive Thermal Management System,Chongqing Jianshe Vehicle System Co.,Ltd.,Chongqing 400052,China;School of Mechatronics and Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China)
出处
《重庆交通大学学报（自然科学版）》
CAS
CSCD
北大核心
2023年第7期155-160,共6页
Journal of Chongqing Jiaotong University(Natural Science)
基金
重庆市技术创新与应用发展专项项目(cstc2019jcyj-msxmX0038,stc2020kqjscx-phxmX0047)
重庆市自然科学基金项目(cstc2019jcyj-msxmX0799)。
关键词
车辆工程
汽车空调
旋叶式压缩机
油气分离器
分离效率
vehicle engineering
automotive air conditioner
rotary vane compressor
oil gas separator
separation efficiency
