摘要
雾化喷嘴广泛应用于动力机械工程领域。在煤矿湿式除尘系统中,喷嘴的雾化性能决定了除尘效果,开展雾化喷嘴结构参数研究,对提高除尘效率具有重要意义。基于喷嘴气穴等因素,首先阐述了雾化机理;随后设计了一种旋流雾化喷嘴,并利用Fluent对雾化过程进行数值模拟,得出了两相流的运动规律;最后实验测量了不同入口压力下的粒径分布情况,验证了仿真结果的正确性。研究表明:旋流雾化喷嘴可以有效阻止气穴现象的产生,可提高喷嘴的喷雾效率。
Atomizing nozzle is widely used in the field of power engineering. In coal mine wet dust removal system, the performance of the atomizing nozzle determined the dust removal effect. Research on atomization nozzle structure parameters, has a great significance to improve the efftciency of dust removal. Based on the nozzle air pockets, first the atomization mechanism was elaborated; Then a swirl atomizer was design, and flow field numerical simulation was done by using the Fluent software, the movement of the two phases flow was obtained; At last, the size distribution under different pressure was measured, the correctness of the simulation result was verified. Research shows that the swirl atomizing nozzle can effectively prevent the cavitation generation; it can improve the efficiency of the nozzle spray.
出处
《机械设计与制造》
北大核心
2017年第3期137-140,共4页
Machinery Design & Manufacture
基金
国家自然科学基金(61473237)
陕西省教育厅专项科研计划项目(15JK2186)
关键词
雾化喷嘴
旋芯
除尘系统
气穴现象
Atomizing Nozzle
Distributor
Dust pelletizing system
Cavitation
