低压雾化喷头雾化性能试验

Research on atomization performance of low-pressure atomization nozzle

为了进一步了解低压雾化喷头的雾化性能,为以后优化喷头性能提供理论依据,进行了相关试验.选取低压雾化喷头的孔径为0.5,0.8,1.0 mm,压力为0.08,0.11,0.14 MPa,喷头和锥盘间距为2,4,6 mm,锥盘夹角为150°,120°,90°等4个参数,设计并进行了正交试验.通过测量3种不同孔径的喷头在0~2.4 m雾化射程时的雾化水量分布特性,并对喷头以正方形组合方式和三角形组合方式时在不同组合间距下的均匀性进行分析,并进行极差分析,得到各因素影响趋势.结果表明:径向水量分布呈现正态分布,最高雾化水量点出现在接近雾化射程末端,且与喷嘴孔径成正相关;与三角形组合方式相比,正方形组合方式较好;影响雾化射程的主次顺序依次为孔径、锥盘夹角、压力、间距,对三角形组合均匀性系数的影响主次顺序依次为锥盘夹角、孔径、间距、压力,正方形组合均匀性系数的影响主次顺序依次为锥盘夹角、孔径、压力、间距.

In order to further understand the atomization performance of the low-pressure atomization nozzle and provide a theoretical basis for optimizing the performance of the nozzle,relevant tests were carried out.The aperture of low-pressure atomization nozzle is 0.5,0.8 and 1.0 mm,the pressure is 0.08,0.11 and 0.14 MPa,the spacing between nozzle and cone disk is 2,4 and 6 mm,the cone angle is 150°,120°and 90°,and the orthogonal test was designed and carried out.By measuring the atomization water distribution characteristics of 3 kinds of nozzles with different apertures in the atomization range of 0-2.4 m,and analyzing the uniformity of the nozzles in the square combination and triangle combination with different combination spacing,the range analysis was carried out on the results to obtain the influence trend of each factor.The results show that the radial water distribution presents a normal distribution,the highest atomized water point is close to the end of atomization range,and is positively correlated with the nozzle diameter.Comparing with triangle combination,square combination is better.The order of influence on atomization range is aperture,cone angle,pressure and spacing,the order of influence on triangle combination uniformity coefficient is cone angle,aperture,pressure and spacing,and the order of influence on square combination uniformity coefficient is cone angle,aperture,pressure and spacing.