高压水除鳞喷嘴结构参数对喷嘴射流性能的影响

Effects of Structural Parameters on the High-pressure Water Descaling Nozzle Performance

为了进一步研究高压水除鳞喷嘴的射流性能,优化喷嘴的结构参数,选取出口扩张角、锥孔深度、入口收缩角作为参考因素,以喷射角和射流流量作为评价指标,对喷嘴各参考因素对射流性能的影响进行了仿真分析。结合正交试验的方法,对喷嘴各结构参数及其交互作用对其性能影响的显著性及重要性次序进行分析,获得最优的参数组合并对其进行了实验验证。结果表明:出口扩张角的增大会使喷射角减小但会使射流流量增加,锥孔深度的增加可以较为全面地提升喷嘴的射流性能,收缩角的增大会使得喷嘴的射流性能减弱,喷嘴的除鳞效果变差;3个参考因素中锥孔深度是对射流性能影响最大的因素;当出口扩张角为80°、锥孔深度为8mm、入口收缩角为65°时喷嘴的射流性能最优。通过将参数优化后的喷嘴的实验结果与原始喷嘴的实验结果对比发现,优化后喷嘴的喷射角由原始值35.7°提升至44.1°,射流流量的大小由原始值10.17L/min提升至28.3L/min。

In order to determine the structural parameters of the descaling nozzles and improve the descale effects,The numerical simulation method was used to analyze the effects of the nozzle divergence angle?the depth of inner cone hole,convergence angle on the nozzle spray angle and the volume flow rate.Herein,the orthogonal experiment method was adopted to simulate structural parameters and their interactions of the descaling nozzles and the significance and importance order of influence.Obtained the optimal combination of structural parameters was validated by experiments.The results show that when the divergence angels are increased,the nozzle spray angles will reduce but the volume flow rates will increase.When the depths of inner cone holes are increased?the nozzle jet.performance will be comprehensively promoted.When the convergences are increased,the nozzle spray angles and the volume flow rates will be simultaneously reduced.The depths of inner cone holes are significantly correlated to the three factors,the optimal aggregative index may be obtained under the conditions of nozzle divergence angle is 80°?the depth of inner cone hole is 8 mm,the nozzle convergence angle is 65°.Under these conditions,the efficiency of the descaling nozzle performance is mostly improved.The experimental research designed by the optimized parameters show that the nozzle spray angle in-creases from 35.7°to 44.1°and the volume flow rate increases from 10.17 L/min to 28.3 L/min.