为提高大口径管道流量在线校准的准确度,建立了一套多声道超声测流装置,对其现场探头定位安装及几何测量方法进行了优化,并在研究流量计算模型的基础上进行了不同探头插入状态的实验室测试。在DN400的管道上安装交叉4声道超声探头,测试了3种探头插入状态,通过分析流量测量误差来得到最优化方案。实验表明,探头插入状态显著影响装置流量测量误差,随着插入深度的增加流量测量结果逐渐增大,但即使全突状态流量依然偏小;3种状态中全缩线性较好,经过系数修正后,全缩状态下超声测流装置计量准确性最高,达到0.2级;超声测流装置经过实验室测试与优化,可以满足1.0级大口径管道流量在线校准的要求。
Abstract
In order to improve the accuracy of online flow calibration for large diameter pipeline, a set of ultrasonic flow measurement device is established. The probe installation technical process and geometric parameter measurement method are optimized for practical use. The flow rate model is studied and flow rate calibration under different probe protrusion state is done in the laboratory. The configuration of double-plane 4-path is installed for a DN400 pipe, and three probe protrusion states are tested to get a best solution based on flow error analysis. The experiments shows that the probe protrusion state has a significant impact on the flow measurement error of the device, and flow measurement results increases with the increase of probe insertion depth. The full contraction state is with the best linearity, and the practical installation with this state can get the best flow measurement accuracy with 0.2 level after a coefficient correction. The ultrasonic flow measurement device can meet the accuracy requirements of online flow calibration for 1.0 level large diameter pipeline after laboratory optimization.
关键词
计量学 /
流量计量 /
超声测流装置 /
在线校准 /
系数修正 /
探头状态
Key words
metrology /
flow measurement /
ultrasonic flow measurement device /
online calibration /
coefficient correction /
probe status
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参考文献
［1］朱永宏, 师恩洁, 曹爱菊. 封闭管道中电磁流量计在线计量的方法和实施策略研究［J］. 中国计量, 2012, (6): 68-70.
［2］苗豫生, 王华, 蔡洁. 在线校准大口径流量计的实验验证［J］. 工业计量, 2013, 23 (4): 16-17, 29.
Miao Y S, Wang H, Cai J. Experimental Verification for Online Calibration of Large Diameter Flowmeter［J］. Industrial Measurement, 2013, 23 (4): 16-17, 29.
［3］袁易全. 高灵敏管外夹持式超声流量计传感器及流量修正系数的研究［J］. 计量学报, 1996, 17 (2): 154-160.
Yuan Y Q. Research on High Sensitivity Sensor for Out-erclamped Ultrasonic Flowmeter and Its Flow Correction Coefficient［J］. Acta Metrologica Sinica, 1996, 17 (2): 154-160.
［4］王艳霞, 傅星, 李正光, 等. 高精度的超声波在线流量测量［J］. 计量学报, 2003, 24 (3): 202-204, 249.
Wang Y X, Fu X, Li Z G, et al. The Precision On-line Ultrasonic Measurement of Flow［J］. Acta Metrologica Sinica, 2003, 24 (3): 202-204, 249.
［5］Kang L, Feeney A, Su R L, et al. Flow Velocity Measurement Using a Spatial Averaging Method with Two-Dimensional Flexural Ultrasonic Array Technology［J］. Sensors, 2019, 19 (21): 4786.
［6］穆立彬, 徐科军, 刘博, 等. 基于可变阈值和过零检测的四声道气体超声波流量变送器［J］. 计量学报, 2019, 40 (2): 266-270.
Mu L B, Xu K J, Liu B, et al. Development of Fourch-annel Ultrasonic Gas Flow Transmitter Based on Variable Threshold and Zero-Crossing Detection［J］. Acta Metrologica Sinica, 2019, 40(2): 266-270.
［7］Hu H M, Meng T, Zhang L, et al. Study on Geometric Parameter Measurement and Wight Coefficient Correction of Ultrasonic Flowmeter［C］//FLOMEKO 2013, Paris, 2013.
［8］刘博, 徐科军, 穆立彬, 等. 基于Kalman滤波的气体超声波流量计融合方法［J］. 计量学报, 2018, 39 (6): 868-873.
Liu B, Xu K J, Mu L B, et al. Fusion Method of Ultrasonic Gas Flowmeter Based on Kalman Filter［J］. Acta Metrologica Sinica, 2018, 39 (6): 868-873.
［9］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, 33 (10): 2307-2314.
Zhang L, Meng T, Wang C, et al. Probe Installation Effects on the Accuracy of Feed Thru Ultrasonic Flowmeters［J］. Chinese Journal of Scientific Instrument, 2012, 33 (10): 2307-2314.
［10］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, 25 (3): 60-65.
Zhang P Y, Zheng D D, Xu T S, et al. Study on the Influence of Ultrasonic Probes on Flow Field and Meas-urement Performance of Ultrasonic Flowmeter［J］. Journal of Experiments in Fluid Mechanics, 2011, 25 (3): 60-65.
［11］罗哉, 刘晖, 崔学伟, 等. 关节臂式坐标测量机热变形误差建模及补偿［J］. 计量学报, 2019, 40(1): 71-77.
Luo Z, Liu H, Cui X W, et al. Modeling and Com-pensation of Thermal Deformation Error of Artic-ulated Arm Coordinate Measuring Machine［J］. Acta Metrologica Sinica, 2019, 40(1): 71-77.
［12］毛玉玉. 大口径水流量计在线检定系统设计与开发［D］. 青岛: 中国石油大学 (华东), 2017.
［13］霍殿中, 翟秀贞, 苗予生, 等. 大口径多声道超声流量计的干校验法检定［J］. 计量学报, 1994, 15 (4): 269-275.
Huo D Z, Zhai X Z, Miao Y S, et. al. Dry Calibration Method for Large-Size Multi-Channel Ultrasonic Flow Meters［J］. Acta Metrologica Sinica, 1994, 15 (4): 269-275.
［14］宋振华. 超声流量计流场分析及导波流量检测方法研究［D］. 北京: 北京工业大学, 2017.
［15］JJG 1030—2007超声流量计检定规程［S］. 2007.
［16］GB/Z 35717—2017水轮机、蓄能泵和水泵水轮机流量的测量超声传播时间法［S］. 2007.
［17］陈国宇, 刘桂雄. 时差式超声流量计立体多声道模型设计［J］. 华南理工大学学报 (自然科学版), 2018, 46 (7): 94-99, 108.
Chen G Y, Liu G X. Design of 3D Multi-Path Model for Transit-Time Ultrasonic Flowmeter［J］. Journal of South China University of Technology (Natural Science Edition), 2018, 46 (7): 94-99, 108.
［18］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.
Hu H M, Wang C, Meng T. Integration Method of Mul-tichord Ultrasonic Flowmeter and Its Accuracy Analysis ［J］. Chinese Journal of Scientific Instrument, 2010, 31 (6): 1218-1223.
［19］Jie Y, Hai N J. Design of Multi-channel Ultrasonic Flowmeter based on ARM［C］//2010 International Conference on Electrical and Control Engineering, Wuhan, China, 2010.
基金
国家质量基础的共性技术研究与应用专项(2017YFF0206303)
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