论文部分内容阅读
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50～2000μm;对50～200μm气泡两种方法的测量结果相差不大,200～2000μm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.
Based on the technology of optical fiber endoscope, an intrusion photographic device composed of optical fiber endoscope, image acquisition system and illumination system was constructed, and the size distribution of the bubble generated by the microbubble generator and two kinds of membrane tubes with different apertures was measured. The results show that the diameters of the bubbles produced by the three bubble generation devices are in the range of 50-2000 μm, and the results of the two methods for the bubble sizes of 50-200 μm are almost the same. The micro-bubble sampling and photographic method with a size of 200-2000 μm The value is higher than that of invagination, probably because the large bubbles are easily aggregated and broken during sampling, and the invagination method can measure the bubble size more accurately and is suitable for on-line measurement of the bubble size with wider distribution in gas-liquid system Dynamic distribution, but also can be used for other measurement methods and numerical simulation method validation.