Abstract: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.