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| Evaluation on the Characteristics of Turbine Meter Base on of Reynolds Number |
| LI Chun-hui1, LI Peng2 |
1. National Institute of Metrology, Beijing 100029, China;
2. Beijing Institute of Metrology, Beijing 100013, China |
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Abstract Within 0.1~2.5 MPa, the high pressure close loop system with 4 turbine meters as master meters will be finished soon in National Institute of Metrology of China. The test for the turbine meter at 0.1MPa, 2.5 MPa showed that the change of indication error could be exceeded 0.4%, for the same turbine meter at the same flowrate and different pressure. On the base of physical model of turbine meter, the evaluation method for the test results of turbine meter under different pressure with curve fitting by means of Reynolds number were presented, and the uncertainty was no more than 0.3% (k=2). The recalibration results verified the evaluation method and uncertainty at 0.1 MPa.
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［1］苏彦勋,杨友涛. 流量检测技术［M］.北京:中国质检出版社,2012.
［2］Tuskamoto H, Hutton S P. Theoretical prediction of meter factor for a helical turbine flowmeter［C］//Conference on Fluid Control and Measurement, Tokyo, Japan,1985.
［3］秦红新,陈康民,赵学端. 涡轮流量计转子内完全三元流场的变域变分有限元解［J］.宇航计测技术,1990,(6):50-54.
［4］Xu Y. A model for the prediction of turbine flowmeter performance［J］.Flow Measurement and Instrumentation,1992,3(1):37-43.
［5］Baker R C. Turbine flowmeters: II. Theoretical and experimental published information［J］. Flow measurements and instrumentation, 1993, 4(3): 123-144.
［6］JJG 643,标准表法流量标准装置［S］.
［7］JJG 1037,涡轮流量计检定规程［S］.
［8］Bremser W, Hasselbarth W, Hirlehei U, et al. Uncertainty analysis and long-term stability investigation of the German primary high pressure natural gas test facility Pigsar［C］//Flomeko,Groningen, Netherlands,2003.
［9］肖明耀. 矩阵最小二乘法原理及应用［M］. 北京:中国计量科学研究院,1978.
［10］Cox M G. The evaluation of key comparison data: determining the largest consistent subset ［J］.Metrologia, 2007, 44(3):187-200. |
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2014, Vol. 35 
