油水旋流分离器数值模拟优化研究

Numerical simulation and optimization study of oil-water cyclone separators

牛贵锋 艾志久 刘春全 贺会群 肖莉 蔡战胜

NIU Guifeng AI Zhijiu LIU Chunquan HE Huiqun XIAO Li CAI Zhansheng

中海石油基地集团采油技术服务公司，天津300452 西南石油大学，四川成都610500 江汉机械研究所，湖北荆州434000

CNOOC Oil Base-Oilfield Technology & Services Company, Tianjin 300452, China Southwest Petroleum University, Chengdu 610500, China

受实验条件限制，单纯通过实验研究旋流器的性能周期长，且费用较高。为此，采用雷诺应力模型CFD数值模拟方法，对油水旋流分离器内的油水两相流流场进行了试验研究。研究表明，采出液在进口处的相互流动干扰对油水分离效果有重要影响，据此提出一种新型结构——带有空间阿基米德螺旋线进口流道和导流螺旋的油水旋流分离器。进一步的优化设计和性能试验表明，空间阿基米德螺旋线进口流道和导流螺旋实现了平滑过渡，从而得到较稳定的流场和较高的分离效率。

Based on the Reynolds stress model CFD numerical simulation method, the experimental study is conducted on the oil-water two-phase flow field in oil-water cyclone separators. Research shows that the produced liquid at the entrance interferes with each other, which exerts great effect on oil-water separation. According to this, a new structure-the oil-water cyclone separator with the spatial Archimedes spiral cord imported flow channel and conduction current spiral- is proposed. Further optimal design and performance test show that smooth transition between Archimedes spiral and cyclone chamber is realized, and therefore more stable flow field and higher separating efficiency are fulfilled.