化工进展 ›› 2022, Vol. 41 ›› Issue (7): 3455-3464.DOI: 10.16085/j.issn.1000-6613.2021-1752
收稿日期:
2021-08-16
修回日期:
2021-09-28
出版日期:
2022-07-25
发布日期:
2022-07-23
通讯作者:
孙立强
作者简介:
解明(1986—),女,硕士,讲师,从事石油化工装备方面的研究工作。E-mail:基金资助:
XIE Ming1(), SUN Liqiang1(), SONG Jianfei2, WEI Yaodong2
Received:
2021-08-16
Revised:
2021-09-28
Online:
2022-07-25
Published:
2022-07-23
Contact:
SUN Liqiang
摘要:
旋风分离器内的气相旋转流具有很强的动态特性,表现为流场瞬时参数随时间波动变化。为了对旋风分离器内气相旋转流动态特性进行表征,本文基于热线/热膜风速仪(HWFA)和动态压力传感器测量的旋风分离器内瞬时切向速度和瞬时压力,从时域和频域两个方面进行了分析。结果表明,旋风分离器内瞬时切向速度信号时域上的波形分布与旋转流的摆动存在联系,时域上的标准偏差可以直观地表征旋风分离器内旋转流的波动强度;频域的主频和功率谱密度(PSD)可以表征旋转流动态参数波动的准周期行为、传递行为和强度衰减特征,也是旋转流摆动行为及其影响范围的反映。基于瞬时切向速度和瞬时压力的时域和频域分析能较好地反映旋转流流场的波动特点,均可用于表征旋风分离器内气相旋转流的动态特性。
中图分类号:
解明, 孙立强, 宋健斐, 魏耀东. 旋风分离器内气相旋转流动态特性分析与表征[J]. 化工进展, 2022, 41(7): 3455-3464.
XIE Ming, SUN Liqiang, SONG Jianfei, WEI Yaodong. Analysis and characterization of gas swirling flow dynamic characteristics in a cyclone separator[J]. Chemical Industry and Engineering Progress, 2022, 41(7): 3455-3464.
D | dr | De | Dh | Dp | H | Hc | Hh | a | b |
---|---|---|---|---|---|---|---|---|---|
100 | 35 | 43 | 70 | 40 | 143 | 220 | 77 | 59 | 28 |
表1 旋风分离器尺寸 (mm)
D | dr | De | Dh | Dp | H | Hc | Hh | a | b |
---|---|---|---|---|---|---|---|---|---|
100 | 35 | 43 | 70 | 40 | 143 | 220 | 77 | 59 | 28 |
测量截面 | z/D |
---|---|
Z1 | 1.23 |
Z2 | 1.93 |
Z3 | 2.52 |
Z4 | 3.30 |
Z5 | 4.05 |
表2 旋风分离器轴向测量截面
测量截面 | z/D |
---|---|
Z1 | 1.23 |
Z2 | 1.93 |
Z3 | 2.52 |
Z4 | 3.30 |
Z5 | 4.05 |
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