光学精密工程2018，Vol.26Issue(12)：2902-2908,7.DOI:10.3788/OPE.20182612.2902
液压油路气液两相传质的光学测量
Optical measurement of mass transfer between gas and liquid phases in hydraulic circuits
摘要
Abstract
In order to study the mass transfer between the free gas and oil in a fluid power system and realize bubble mass measurement in oil, the radius limit of the bubble during measurement was derived from steady state and zero temperature gradient conditions.A high-pressure gas-oil mass transfer optical measurement system was designed, and the key algorithms for bubble identification and tracking were studied.First, the radius limit of a bubble during measurement was derived from the Biot number and Newton's Law of Cooling, and a high-pressure gas-oil mass transfer optical measurement system was designed.Then, a method to identify bubble elements from a video was demonstrated, based on the roundness of a circle and a set threshold.Finally, a minimum vector length method was used to track the center of a bubble between frames.Experimental results indicate that the system can achieve optical measurements under a pressure of 14 Mpa, and the error for measuring the radius of the bubble is within 4％.The experimental method for gas-oil mass transport study can satisfythe system requirements of optical measurement of gas-oil mass transfer in a fluid power system.关键词
光学测量/液体可压缩性/气液传质Key words
optical measurement/fluid compressibility/gas-oil mass transfer分类
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田昊..液压油路气液两相传质的光学测量[J].光学精密工程,2018,26(12):2902-2908,7.基金项目
国家重点研发计划资助项目(No.2017YFC0307003) （No.2017YFC0307003）
大连理工大学精密与特种加工教育部重点实验室研究基金资助项目(No.JMTZ201703) （No.JMTZ201703）
中央高校基本科研业务费青年教师科技创新项目(No.3132018200) （No.3132018200）
