气流式喷嘴雾化特性试验研究  

Experimental Study of Atomization Characteristics of an Airflow Type Nozzle

作　　者：任兰学[1] 马胜远[1] 王永峰[1] 庞学佳[1] 

机构地区：[1]中国船舶重工集团公司第七○三研究所,黑龙江哈尔滨150036

出　　处：《热能动力工程》2008年第5期516-518,共3页Journal of Engineering for Thermal Energy and Power

摘　　要：一般气流式喷嘴并不能雾化气液混合物,而压力式喷嘴相比气流式喷嘴,存在着易磨损,雾化效果差等问题。为解决上述问题,我们自行设计了新型的气流式喷嘴,并进行了雾化特性的试验研究,对雾化粒滴进行了测量分析。测量结果表明,该型喷嘴在试验条件下雾化粒度小于50μm,雾化效果优于一般的气流式喷嘴。与此同时我们对影响雾化效果的影响因素进行了分析研究,对不同气液比的情况进行了测试,发现当气液比增大时雾滴粒度减小;同时我们还对空气速度分别为150m/s及250m/s进行了测试,测试看出气液相对速度越大,雾滴粒度越小。研究表明,该型喷嘴能够对气液混合物进行雾化,并可应用于石化领域中分离塔的碱液分离,压缩(气)机注水降温中水的雾化等。Compared with ordinary pressure type nozzles,airflow type nozzles have such problems as easy to be worn out and a poor atomization effectiveness.However,ordinary airflow type nozzles are incapable of atomizing any gas-liquid mixture.To solve the above problem,a new type of airflow nozzle was designed by the Institute and an experimental study has been conducted of its atomization characteristics.In addition,the atomized particles and droplets were measured and analyzed.The measurement results show that under the test conditions,the particle diameters atomized by the nozzles in question are less than 50 μm and the atomization effectiveness is superior to that of ordinary airflow type nozzles.In the meantime,an analysis and study of the factors influencing atomization effectiveness have been conducted.Measurements were performed at different gas-liquid ratios.When the gas-liquid ratio increases,the atomized droplet particle diameter will decrease.At the same time,measurements were also performed at an air speed of 150 m/s and 250 m/s respectively.The greater the relative speed between the gas and liquid,the smaller the atomized droplet particle diameter.The results of the study show that the type of nozzles under discussion can atomize the gas-liquid mixture and can be applied to the alkaline solution separation in the separation towers of petrochemical industry and the water atomization for temperature reduction through water injection into a compressor.

关 键 词：气流式 喷嘴 雾化 试验研究 

分 类 号：TK263.4[动力工程及工程热物理—动力机械及工程]