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首页>《中国测试》期刊>本期导读>新型内外管差压流量计弹状流双参数测量研究

新型内外管差压流量计弹状流双参数测量研究

328    2019-01-30

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作者:方立德1,2,3, 王配配1,2,3, 王松1,2,3, 曾巧巧1,2,3, 谢辰1,2,3, 李小亭1,2,3, 韦子辉1,2,3

作者单位:1. 河北大学质量技术监督学院, 河北 保定 071000;
2. 河北省计量仪器与系统工程实验室, 河北 保定 071000;
3. 保定市产业计量工程技术研究中心, 河北 保定 071000


关键词:气液两相流;差压流量计;压损比;双参数测量


摘要:

为实现气液两相流相含率及流量的双参数测量,设计新型内外管差压流量计测量装置。利用该装置在单相水流量为1~11 m3/h范围内进行实验测试,拟合单相流出系数C的数学模型。单相水流量测量值与实际值的最大示值相对误差在±1.6%以内。气液两相流测量特性研究在水流量范围为2~6 m3/h,气流量范围为0.12~0.6 m3/h进行实验,在已知含率的情况下求得弹状流的两相总质量流量预测模型,通过分析压损比与XLM变化规律,分段建立压损比和FrgXLM的数学模型,得到分相含率。预测结果表明:弹状流液相含率相对误差在±2%以内,两相总质量流量相对误差在±3%以内。通过差压及压损比实现相含率及流量的双参数测量,为气液两相流不分离测量提供一种参考方法。


Research on dual-parameter of slug flow measurement based on new differential pressure flowmeter
FANG Lide1,2,3, WANG Peipei1,2,3, WANG Song1,2,3, ZENG Qiaoqiao1,2,3, XIE Chen1,2,3, LI Xiaoting1,2,3, WEI Zihui1,2,3
1. College of Quality and Technology Supervising, Hebei University, Baoding 071000, China;
2. Measuring Instruments and Systems Engineering Laboratory of Hebei Province, Baoding 071000, China;
3. The Research Center of Industrial Metrology Engineering Technology of Baoding, Baoding 071000, China
Abstract: In order to realize the dual-parameter measurement of phase holdup and flow rate in gas-liquid two-phase flow, a new type of differential pressure flowmeter measuring device was designed. Experiments were conducted in single-phase of water flow range of 1-11 m3/h, and the mathematical model of the single-phase out flow coefficient C was fitted. The maximum relative error between the measured value and the actual value of the single-phase water flow is within ±1.6%. The two-phase test of the water flow rate is 2-6 m3/h, and the air flow rate is 0.12-0.6 m3/h. The two-phase mass flow prediction model of slug flow and bubble flow is obtained respectively when the phase holdup is known. By analyzing the pressure loss ratio and the change rule of XLM, the mathematical models of pressure loss ratio and Frg and XLM were established in sections, and the void fraction was obtained. The relative error of the liquid phase holdup is within ±2%, the relative error of mass flow is less than ±3%. Dual-parameter measurement of phase holdup and flow rate is realized by using differential pressure and pressure loss ratio measured by new differential pressure flowmeter, which provides a new method for the non separation measurement of the gas-liquid two phase flow.
Keywords: gas-liquid flow;differential pressure flowmeter;pressure loss ratio;dual-parameter measurement
2019, 45(1):27-33  收稿日期: 2018-06-09;收到修改稿日期: 2018-07-25
基金项目: 国家自然科学基金项目(61475041);国家重点研发计划子任务(2016YFF0203103-3,2017YFC0805703);河北省自然科学基金(E2017201142);河北大学研究生创新资助项目(hbu2018ss81)
作者简介: 方立德(1974-),男,河北保定市人,教授,博士,研究方向为热工计量测试技术
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