Over-reading prediction model of wet gas measurement using Z-shaped gas ultrasonic flow meter

doi:10.3969/j.issn.0438-1157.2013.11.020

CIESC Journal ›› 2013, Vol. 64 ›› Issue (11): 4031-4038.DOI: 10.3969/j.issn.0438-1157.2013.11.020

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Over-reading prediction model of wet gas measurement using Z-shaped gas ultrasonic flow meter

XU Ying^1,2, CHEN Yang^1,2, BA Xili³, YIN Cun^1,2, ZHANG Tao^1,2, SHI Hongran⁴

1. School of Electrical and Automation Engineering, Tianjin University, Tianjin 300072, China;
2. Key Laboratory for Process Measurement and Control of Tianjin, Tianjin 300072, China;
3. PetroChina Planning & Engineering Institute, Beijing 100083, China;
4. China Nuclear Weisi Instrument Co., Ltd., Shanghai 201614, China

Received:2013-04-08 Revised:2013-06-07 Online:2013-11-05 Published:2013-11-05
Supported by:
supported by the National Natural Science Foundation of China(60974118).

Z法气体超声波流量计湿气测量的虚高预测模型

徐英^1,2, 陈阳^1,2, 巴玺丽³, 尹存^1,2, 张涛^1,2, 石弘然⁴

1. 天津大学电气与自动化工程学院, 天津 300072;
2. 天津市过程检测与控制重点实验室, 天津 300072;
3. 中国石油天然气股份有限公司规划总院, 北京 100083;
4. 上海中核维思仪器仪表有限公司, 上海 201614

通讯作者: 徐英
作者简介:徐英(1970-),女,副教授。
基金资助:
国家自然科学基金项目(60974118)。

Abstract

Abstract: In order to investigate the over-reading prediction model of wet gas measurement using gas ultrasonic flow meter,a Z-shaped gas ultrasonic flow meter prototype was selected to analyze its measuring principle and mechanism of over-reading when metering wet gas flow.The laboratory tests were conducted in TJU adjustable medium-pressure wet gas test loop.The over-reading of Z-shaped gas ultrasonic flow meter was mainly related to the void fraction of the pipe under a uniform film assumption with annular flow.Meanwhile,the correlation between void fraction and over-reading was deduced.Five typical void fraction correlations of gas/liquid two-phase flow in horizontal circular pipe were selected to calculate the predicted value of over-reading.The most appropriate void fraction correlation for predicting over-reading of Z-shaped type gas ultrasonic flow meter was the Armand-Massina correlation.The over-reading prediction model based on this void fraction correlation had prediction relative errors ranging from-7.77% to 4.90%,with a standard uncertainty of 0.98% at 95% confidence interval.

Key words: Z-shaped, gas ultrasonic flow meter, wet gas measurement, over-reading, void fraction

关键词: Z法, 气体超声波流量计, 湿气测量, 虚高, 截面含气率

CLC Number:

O359.1

XU Ying, CHEN Yang, BA Xili, YIN Cun, ZHANG Tao, SHI Hongran. Over-reading prediction model of wet gas measurement using Z-shaped gas ultrasonic flow meter[J]. CIESC Journal, 2013, 64(11): 4031-4038.

徐英, 陈阳, 巴玺丽, 尹存, 张涛, 石弘然. Z法气体超声波流量计湿气测量的虚高预测模型[J]. 化工学报, 2013, 64(11): 4031-4038.

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Over-reading prediction model of wet gas measurement using Z-shaped gas ultrasonic flow meter

Z法气体超声波流量计湿气测量的虚高预测模型

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