基于同轴线相位法的两相流含气率测量研究

doi:10.3969/j.issn.1000-1158.2020.04.008

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Abstract In order to accurately measure the void fraction of gas-liquid two-phase flow, a coaxial phase difference measurement method was proposed. The coaxial line sensor was used to obtain the void fraction of the mixed medium by measuring the change of the phase difference after the electromagnetic wave was distributed through the gas-liquid mixed medium having different distribution conditions in the coaxial line. The design of the coaxial line measurement circuit and the measurement sensor were completed, and a void fraction measurement model was established. Subsequently, the indoor static experiment was carried out with gas-liquid two-phase. The error analysis of the sensor response and experimental results under the vertical tube state was carried out. The results show that the phase difference output is linear with the void fraction. At the same time, the relative error between the prediction result and the experimental result is within ±5% at different frequencies, indicating that the prediction model has better accuracy.

Key words： metrology void fraction of gas-liquid two-phase flow coaxial line phase difference static experiment

Received: 15 August 2019

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TB937

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	Articles by authors
	FANG Li-de
	LANG Yue-xin
	ZHAO Ning
	LI Xiao-ting
	WEI Zi-hui

Cite this article:

FANG Li-de,LANG Yue-xin,ZHAO Ning, et al. Study on Measurement of Two-phase Gas-liquid Flow Based on Coaxial Phase[J]. Acta Metrologica Sinica, 2020, 41(4): 434-440.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2020.04.008 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2020/V41/I4/434

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