摘要
为了研究喷头在低压雾化的现象和机理,搭建了测量低压雾化喷头水力性能的试验台。使用高速摄影设备和MATLAB软件进行雾化图像采集和分析,研究了孔径为0.3、0.5、0.8和1.0 mm的低压精细雾化喷头在0.15 MPa压力以下的流量、雾化角和雾化粒径雾化特性。结果表明,喷头流量与雾化压力成正相关;雾化角随着压力增大而增大,并且稳定在60°到80°之间;在0.08 MPa压力下喷头轴向方向会出现束状射流之后分散的现象;雾化粒径与雾化压力成负相关,并且较小孔径的喷嘴在较小压力下雾化粒径较大。研究为低压条件下雾化加湿应用提供了理论指导。
In order to study the phenomenon and mechanism of low-pressure atomization,a test rig of low-pressure jet nozzle atomization is built. Flow,atomization angle and atomization characteristics of atomization particle size of low pressure fine atomization nozzle aperture size0.3,0.5,0.8 and 1.0 mm in the pressure below 0.15 MPa are studied by using high-speed photography equipment and MATLAB software to collect and analyze aerial images. The results show that the nozzle flow is positively correlated with the atomization pressure. The atomization angle increases with the increase in pressure and is stable between 60° and 80°. The jet nozzle will appear in the axial direction after the dispersion of the phenomenon at the pressure of 0.08 MPa. Atomization particle size and atomization pressure is negatively correlated,and smaller diameter nozzle at a smaller pressure atomization has a larger particle size. This paper provides guidances for the application of atomization and humidification under low pressure conditions.
作者
张林国
朱兴业
胡广
李扬帆
袁寿其
ZHANG Lin-guo;ZHU Xing-ye;HU Guang;LI Yang-fan;YUAN Shou-qi(Jiangsu University Research Center of Fluid Machinery Engineering and Technology,Zhenjiang 212013,China)
出处
《中国农村水利水电》
北大核心
2018年第10期109-113,共5页
China Rural Water and Hydropower
基金
"十三五"国家重点研发计划(2016YFC0400202)
江苏省重点研发计划(现代农业)(BE2015316)
中国博士后特别资助项目(2016T90428)
江苏高校优势学科建设工程资助项目(PAPD)
关键词
低压雾化喷头
高速摄影设备
雾化特性
low-pressure atomization nozzle
high speed photography equipment
atomization characteristics
