就液－液水力旋流器入口形式的种类与有关油－水分离用水力旋流器入口形式的研究工作加以介绍，综合考虑入口与外设管线的连接、流量的合理匹配、入口处可提供的压力、加工制造能力以及水力旋流器内部流场的稳定性等诸多因素，分析了不同入口形式（单入口、双入口、直线型与涡线型入口等）对水力旋流器流场分布及分离特性的影响。 This paper introduces the types of liquid-liquid hydrocyclone inlet and the research work on hydrocyclone inlet for oil-water separation. Considering the connection of inlet and peripheral pipeline and the reasonable matching of flow, inlet can provide Pressure, processing and manufacturing capabilities and the stability of the flow field inside the hydrocyclone, the effects of different inlet forms (single entry, double entry, straight entry and vortex entry) on the hydrocyclone flow field distribution And the impact of separation characteristics.