对自行设计的液－液分离水力旋流器进行了一系列室内试验及现场实验，通过原油与水及机油与水两种油水混合介质的分离，系统地研究了水力旋流器几何参数与运行参数对分离效率的影响，提出了一些合理的关系式。在此基础上设计与制造了直径Ｄ为３８ｍｍ及５２ｍｍ两种样机。现场实验证明，该种水力旋流器的分离效率达到９０％以上，且结构简单，可在低压下运行，成本低，能耗少，完全可用于工程实际。 A series of laboratory tests and field experiments were carried out on a self-designed hydrocyclone hydrocyclone. The separation of crude oil, water and oil-water mixture was used to systematically study the hydrocyclone geometry and operation The influence of parameters on the separation efficiency, put forward some reasonable relations. On this basis, design and manufacture of a prototype D diameter of 38mm and 52mm two prototypes. Field experiments show that the hydrocyclone separation efficiency of more than 90%, and the simple structure, low pressure operation, low cost, less energy consumption, can be fully used in engineering practice.