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本文在分析了当前气体流量计优缺点的基础上,根据气体动力学中音速喷管壅塞流动原理,阐述了用音速喷管作为气体流量计的工作原理;提出了以最少量不同尺寸的喷管组合来满足宽量程比及高测量精度等要求的方法。
Based on the analysis of the advantages and disadvantages of the current gas flowmeter, based on the principle of gas-flow choking in the nozzle, the principle of using the sound-velocity nozzle as the gas flowmeter is expounded. Combination to meet the wide range and high measurement accuracy and other requirements of the method.