两级旋风式汽水分离器的分离性能研究

在研究国内外相关资料的基础上，设计了一种两级旋风分离器结构并针对该结构的分离性能进行了详细的数值模拟研究:依据两级旋风式汽水分离器的结构建立计算分析模型，采用数值模拟分析计算了汽水分离器的分离性能，研究不同入口速度、不同湿度对分离器分离特性的影响，搭建了气-水冷态试验回路对模型进行了验证。分析结果表明数值模拟计算结果与冷态试验结果趋势一致，分离效率计算结果偏差小；设计工况中，分离器总体分离效率优于99.5%；一级分离器适用于粗分离，其分离效率随入口湿度和速度的增大而减小；二级分离器适用于小液滴分离，其分离效率与入口速度呈正相关，与入口湿度呈非线性关系。 

Research on Separation Characteristics of Two Stage Cyclone Steam Separator

A special two-stage whirlwind steam separator was designed based on the research of relevant domestic and foreign data, and the detailed numerical simulation research was conducted in terms of its separation performance. According to the structure of the two-stage cyclone separator, a computational analysis model was established, and the separation performance of the separator was calculated by numerical simulation. The effect of different inlet velocity and different humidity on the separation characteristics of the separator was studied, and the air-water cooling test circuit was built to verify the model. The results show that the numerical simulation results are consistent with the cold test results, and the deviation of separation efficiency is small. In the design condition, the overall separation efficiency of the separator is better than 99.5%. The primary separator is suitable for coarse separation, and its separation efficiency decreases with the increasing of inlet humidity and velocity. The secondary separator is suitable for the separation of small droplets, and its separation efficiency is positively correlated with the inlet velocity and non-linear with the inlet humidity.