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| Simulation and Design of the Small Pipe Ultrasonic Flowmeter |
| ZHAO Wei-guo1,ZHAO Xue-song1,HUANG Chao-chuan1,2 |
1.College of Metrology and Measurement Engineering, China Jiliang University, Hangzhou, Zhejiang 310018, China
2.Zhejiang Cangnan Instrument Factory, Cangnan, Zhejiang 325800, China |
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Abstract In order to solve the problem of small pipe measurement of transit-time ultrasonic flowmeter, the inner acoustic reflection device and tapered pipe were designed. The flow correct coefficient K and its RMS error were adopted as the evaluation standard. The shape, size and distance of the reflectors and the size of tapered pipe were studied with FLUENT software. Then the optimal pipe model was designed. The coefficients of the model at different flow points were also calculated. The simulation results showed that the flow pipe model is stable and can improve the accuracy of the small pipe measurement.
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［1］Jae C J, Poong H S. Estimation of the flow profile correction factor of a transit-time ultrasonic flow meter for the feedwater flow measurement in a nuclear power plant［J］. Nuclear Science, 2005,52 (3):714-718.
［2］Mahadeva D V, Baker R C, Woodhouse J. Further Studies of the Accuracy of Clamp-on Transit-Time Ultrasonic Flowmeters for Liquids［J］. Instrumentation and Measurement, 2009, 58 (5):1602-1609.
［3］Van Deventer J. Introduction of a 2 Transducer Ultrasonic Mass Fowmter［C］ // IMTC. Instrumentation and Measurement Technology Conference, Lulea University, 2005, 1369-1371.
［4］陈书洗, 倪礼宾, 朱翠华. 气体超声波流量计流速修正系数的确定及其计算机在线处理［J］. 计量学报, 1991,12 (1): 72-75.
［5］王雪峰, 唐祯安. 超声波气体流量计的管道模型仿真和误差分析［J］. 仪器仪表学报, 2009, 30 (12): 2612-2618.
［6］张也影. 流体力学［M］. 北京:高等教育出版社,1999: 257-277.
［7］Daugherty R L, Ingersoll A C. Fluid mechanics ［M］. New York: McGRW-Hill Publishing Company Ltd. 1954, 25-88.
［8］Liu F, He C F. Numerical Simulation of Multi-path Ultrasonic Flowmeter: Ultrasonic Path Error Analysis［C］//Sensor Device Technologies and Applications, 2010 First International Conference on Sensor Device Technologies and Applications, Beijing University, 2010, 58-62.
［9］贺盛, 彭黎辉, 仲里敏. 基于CFD的超声波流量计最优声道位置研究［J］. 仪器仪表学报, 2009, 30 (4): 182-186.
［10］王汉卿. 超声波流量计的测量误差［J］. 节能减排, 1998, (5): 37-41.
［11］刘永辉, 杜广生, 陶莉莉, 姜志成, 沈芳. 反射装置对超声波流量计水流特性影响的研究［J］. 仪器仪表学报, 2011, 32 (5): 1183-1188.
［12］张俊, 张晓婷. 流体传输中流体阻力和水头损失的计算［J］. 流体传动与控制, 2011,4(24): 24-28. |
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2012, Vol. 33 
