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过程工程学报 ›› 2016, Vol. 16 ›› Issue (3): 361-366.DOI: 10.12034/j.issn.1009-606X.215417

• 流动与传递 •    下一篇

侵入式光纤照相法测量气泡尺寸分布

陈方圆 李平平 李向阳 杨超 毛在砂   

  1. 中国科学院过程工程研究所绿色过程与工程重点实验室 中国科学院过程工程研究所绿色过程与工程重点实验室 中科院过程工程研究所 中国科学院过程工程研究所，中国科学院绿色过程与工程重点实验室 中国科学院过程工程研究所
  • 收稿日期:2015-12-09 修回日期:2016-01-12 出版日期:2016-06-20 发布日期:2017-04-28
  • 通讯作者: 陈方圆

An Immerged Fibre-optic Photoimaging Method for Measurement of Bubble Size

CHEN Fang-yuan LI Ping-ping LI Xiang-yang YANG Chao MAO Zai-sha   

  1. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences Institute of Process Engineering, Chinese Academy of Sciences Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences Institute of Process Engineering, Chinese Academy of Sciences
  • Received:2015-12-09 Revised:2016-01-12 Online:2016-06-20 Published:2017-04-28
  • Contact: CHEN Fang-yuan

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被引次数

5

摘要： 基于光纤内窥镜技术构建了以光纤内窥镜、图像采集系统和照明系统组成的侵入式照相装置，测量了由微气泡发生器和两种不同孔径的膜管产生的气泡的尺寸分布，并与取样照相法进行了比较. 结果表明，3种气泡生成装置产生的气泡直径在50~2000 mm；对50~200 mm气泡两种方法的测量结果相差不大，200~2000 mm的微气泡取样照相法测量值比侵入式照相法高，可能是因为取样时大气泡易发生聚并和破碎. 侵入式照相法能较准确测量较宽的气泡尺寸，适用于在线测量气液体系中分布较宽的气泡尺寸动态分布，也可用于其他测量方法及数值模拟方法的验证.

关键词: 气泡尺寸分布, 光纤内窥镜, 在线测量, 取样法, 微气泡发生器

Abstract: An immerged photoimaging system was developed to measure bubble size distribution, which mainly consisted of a fibre-optic endoscope, an image acquisition system and a light source. Bubbles generated by a microbubble generator and two ceramic microporous tubes with different pore-sizes were measured using this system, and the results were compared with those by the conventional sampling photoimaging method. The bubble sizes generated by the three generators ranged from 50 to 2000 mm. The difference between the two methods was not obvious when the bubble diameter was smaller than 200 mm. However, it became significant when the bubble diameter was larger than 200 mm. This is probably because smaller bubbles are relatively more stable, and bigger bubbles are easy to coalesce, leading to measurement errors in the sampling course. The results suggest that this new method is capable of measuring a wide range of bubble sizes reliably, and can be used for in-situ measurement of bubble size in gas-liquid systems, verification of other methods and numerical simulation.

Key words: bubble size distribution, fibre-optic endoscope, in-situ measurement, sampling method, microbubble generator

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