Experimental analysis of infrared cooling characteristics of swirl atomizer composite nozzle

雾化喷头种类	雾化效果	结构特点	是否容易堵塞	附加资源保障	噪声
旋流式喷头	液滴直径较小	结构简单	否	无	较小
撞击式喷头	喷雾覆盖面广	结构简单，为细长孔结构	是	无	较小
气助式喷头	液滴直径均匀且细小	结构复杂	否	需要压缩空气	噪声较大

Table 2. Recommended values of structure parameters of swirl atomizer nozzle
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Table 2. Recommended values of structure parameters of swirl atomizer nozzle
结构参数推荐取值范围
旋转室半径R /mm R/r_o≥3
旋转室长度L_x/mm L_x/r_o≥2
出口段长度L_o/mm 一般 L_o/r_o取0.5~1.0
旋转室锥角θ /(º) 一般取60~120

Table 3. The droplet diameter distribution of swirl atomizer nozzle

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Table 3. The droplet diameter distribution of swirl atomizer nozzle

试验压力/MPa	D(V，0.5)/μm	D(V，0.99)/μm	SMD/μm
0.1	136.13	216.77	125.15
0.2	134.17	231.24	121.25
0.3	127.53	216.69	114.82
0.4	133.16	195.27	108.58
0.5	111.53	179.56	101.79
0.6	111.79	187.55	101.71
0.7	110.74	175.76	100.94
0.8	107.31	172.05	98.17
0.9	105.97	169.91	96.65
1.0	108.56	154.91	93.94

Table 4. Experiment conditions parameters of swirl atomizer composite nozzle
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Table 4. Experiment conditions parameters of swirl atomizer composite nozzle
工作压力/MPa 钢板初始温度/℃ 水温/℃ 环境温度/℃
0.3 40.9 22.3 34.5
0.5 41.5 22.0 33.7
0.8 42.2 22.2 31.4

Table 5. Comparison of cooling time-consuming of swirl atomizer composite nozzle
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Table 5. Comparison of cooling time-consuming of swirl atomizer composite nozzle
工作压力/MPa 水膜降温时间/s 水膜+水雾
降温时间/s 降温时间缩短比例/% 流量增加比例/% 水雾占比/%
0.3 61 44 27.9 18 15
0.5 55 29 47.3 24 19
0.8 39 21 46.2 18 16

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Zhen WANG, Senlin ZHU, Yinshui LIU, Liangcai LI. Experimental analysis of infrared cooling characteristics of swirl atomizer composite nozzle[J]. Chinese Journal of Ship Research, 2022, 17(4): 170

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