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通过对平炉顶吹氧枪进行测定和实验研究,阐述了氧枪喷管中气体流动的基本规律,并从理论上导出了与拉伐尔喷管形式相同的直筒喷管流量计算公式,简化了直筒喷管的流量计算。直筒喷管流出的氧气射流中存在着强激波,使射流的滞止压力沿轴向衰减较快。为了减弱氧气射流中激波的强度,研制了一种加工简便的直筒-扩张型超音速喷管。实验研究证实,这种喷管和拉伐尔喷管的氧气射流的特性基本相同。文中介绍了这种喷管的性能和设计方法。
Based on the determination and experimental study of the top-blowing lance, the basic law of the gas flow in the lance nozzle is expounded and the formula for calculating the flow rate of the straight lance nozzle in the same form as the Laval nozzle is derived theoretically Straight nozzle flow calculation. Straight nozzle outflow of oxygen jet there is a strong shock, so that the jet lag pressure decay faster in the axial direction. In order to reduce the intensity of shock waves in oxygen jets, a straight-dilator supersonic nozzle was developed. Experimental studies have confirmed that this nozzle and Laval nozzle oxygen jet basically the same characteristics. This article describes the performance of this nozzle and design methods.