作者：陈文琳1,2, 武建军1, 丁昭2
作者单位：1. 兰州大学土木工程与力学学院，甘肃 兰州 730000;
2. 新疆维吾尔自治区计量测试研究院，新疆 乌鲁木齐 830011
关键词：超声流量计;多声道;插入式探头;局部扰流;曲线拟合
摘要：
插入式探头安装方式会对超声流量计内部流场产生扰动，进而影响测量结果。在高压空气流量标准装置上对DN100 mm和DN200 mm的气体超声流量计进行标定，结果显示探头局部扰流对超声流量计会产生负向误差，管道口径越小，局部扰流引入的误差越大。DN100 mm超声流量计在3~27 m/s的流速范围内的测量误差在–1.5% ~ –3%之间，而DN200 mm的超声流量计在1.4~13 m/s的流速范围内的测量误差在–1.2% ~ –2.1%之间。分析不同压力、不同流速下探头局部扰流对超声流量计测量结果的影响规律，并基于流速和测量误差对实验结果进行曲线拟合，提供了拟合曲线的数学模型。
Influence of probe disturbance on the measurement results of ultrasonic flowmeter
CHEN Wenlin1,2, WU Jianjun1, DING Zhao2
1. College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, China;
2. Xinjiang Institute of Measurement & Testing Technology, Urumqi 830011, China
Abstract: The installation of the inserted probe will disturb the internal flow field inside the ultrasonic flowmeter, which will affect the measurement results. The gas ultrasonic flowmeter of DN100 mm and DN200 mm was calibrated on the high-pressure air flow standard device. The results show that the local disturbance of the probe will produce negative error on the ultrasonic flowmeter. The smaller the pipe diameter, the greater the error introduced by local disturbance. The measurement errors of the DN100 mm ultrasonic flowmeter were between –1.5% and –3% in the flow rate range of 3-27 m/s, while the measurement errors of the DN200 mm ultrasonic flowmeter were between –1.2% and –2.1% in the flow rate range of 1.4-13 m/s. The influence of probe disturbance on the measurement results of ultrasonic flowmeter under different pressure and flow rate was analyzed, and the curve fitting of experimental results was made based on velocity and measurement error, and the mathematical model of fitting curve was provided.
Keywords: ultrasonic flowmeter;multi-path;inserted probe;local disturbance;curve fitting
2023, 49(1):126-130 收稿日期: 2021-07-26;收到修改稿日期: 2021-10-28
基金项目: 国家重点基础研究发展计划（2017YFF0205305）; 新疆维吾尔自治区自然科学基金青年科学基金项目（2022D01B51）
作者简介: 陈文琳(1988-),女,甘肃武威市人,高级工程师,博士,研究方向为工程流体力学和流量计量
参考文献
[1] 马雪林, 徐雅, 谢代梁, 等. 多声道超声波流量计内部流-声耦合特性仿真分析[J]. 中国测试, 2021, 47(5): 123-128
[2] 何敏, 任佳, 肖云萍, 等. 气体超声流量计国际标准制/修订进展和发展趋势[J]. 天然气工业, 2007, 27(5): 109-112
[3] 陈利琼, 谢虹雅, 孙靖云, 等. 基于CFD的气体超声流量计计量准确性研究[J]. 中国测试, 2019, 45(7): 87-91
[4] ASME PTC18-2011: Hydraulic Turbines and Pump-Turbines Performance Test Codes[S]. American Society of Meehanieal Engineers, 2011.
[5] ZHENG D. ZHANG P Y, XU T S. Study of acoustic transducer protrusion and recess effects on ultrasonic flowmeter measurement by numerical simulation[J]. Flow Measurement & Instrumentation, 2011, 22(5): 488-493
[6] 张朋勇, 郑丹丹, 徐天室, 等. 超声流量计探头对流场及其测量性能影响研究[J]. 实验流体力学, 2011(3): 60-65
[7] 郑丹丹, 赵丹, 张朋勇. 超声流量测量中换能器对流场扰动机理研究[J]. 机械工程学报, 2014, 50(4): 18-24
[8] 胡岳, 张涛, 郑丹丹, 等. 超声流量计探头安装入侵长度对测量影响的估算[J]. 天津大学学报, 2013, 46(9): 776-783
[9] WANG B, CUI Y, LIU W, et al. Study of transducer installation effects on ultrasonic flow metering using computational fluid dynamics[J]. Advanced Materials Research, 2012, 629: 676-681
[10] CHEN D S, CAO H B, CUI B L. Study on flow field and measurement characteristics of a small-bore ultrasonic gas flow meter[J]. Measurement and Control, 2021(31): 002029402110075
[11] QIN L H, HU L, MAO K, et al. Flow profile identification with multipath transducers[J]. Flow Measurement and Instrumentation, 2016, 52: 148-156
[12] 唐晓宇. 多声道超声波气体流量检测技术仿真与实验研究[D]. 杭州: 浙江大学, 2016.
[13] 胡鹤鸣, 王池, 孟涛. 多声路超声流量计积分方法及其准确度分析[J]. 仪器仪表学报, 2010, 31(6): 1218-1223
[14] LIU Z G, DU G S, SHAO Z F, et al. Measurement of transitional flow in pipes using ultrasonic flowmeters[J]. Fluid Dynamics Research, 2014, 46(5): 055501(10pp)
[15] 张朋勇. 超声流量计非理想流场适应性研究[D]. 天津: 天津大学, 2011.
[16] 李跃忠. 多声道超声波气体流量测量关键技术研究[D]. 武汉: 华中科技大学, 2010.
[17] LYNNWORTH L C, LIU Y. Ultrasonic flowmeters: Half-century progress report, 1955–2005[J]. Ultrasonics, 2006, 44(4): e1371-e1378
[18] 刘桂雄, 陈国宇, 谭文胜. 流量测量流动调整器结构与发展趋势分析[J]. 中国测试, 2020, 46(3): 12-16
[19] 张亮, 孟涛, 王池, 等. 斜插式超声流量计探头插入深度影响实验研究[J]. 仪器仪表学报, 2012(10): 2307-2314
