Abstract：Installation effects on the performance of turbine flowmeters are investigated using numerical simulation method. Results from numerical analysis show that flow disturbances caused by pipe configurations such as single bend, out-of-plane double bends and valves may produce flat, asymmetry and swirl velocity profiles, thus leading to the meter reading error. Placing bends and valves in good locations so that swirls generated as flow pass through them rotate in contrary directions is useful to reduce the swirling intensity so as to lower installation effects on flowmeter measurement accuracy. The upstream stator shows very good performance in terms of swirl, but the flatness and asymmetry relative efficiencies are not very high.
［1］MATTINGLY G E, YEH T T. Elbow effects on pipe flow and selected flow meters ［A］. Proceedings of the International Conference on Flow Measurement［C］, Seoul, Korea, 1993: 61-79.
［2］BRENNAN J A, MCFADDIN S E, SINDT C F, et al. The influence of swirling flow on orifice and turbine flowmeter performance ［J］. Flow Measurement and Instrumentation, 1989, 1(1): 24-30.
［3］van der KAM PM A, van DELLEN K. The effects of double bends out of plane on turbine meters ［J］. Flow Measurement and Instrumentation, 1991, 2(1): 61-68.
［4］MATTINGLY G E, YEH T T. Effects of pipe elbows and tube bundles on selected types of flowmeters ［J］. Flow Measurement and Instrumentation, 1991, 2(1): 4-13.
［5］MICKAN B, WENDT G, KRAMER R, et al. Systematic investigation of pipe flows and installation effects using laser Doppler anemometry-Part II. The effect of disturbed flow profiles on turbine gas meters-a describing empirical model ［J］.Flow Measurement and Instrumentation, 1996, 7(3/4): 151-160.
［6］MICKAN B, WENDT G, KRAMER R, et al.Systematic investigation of flow profiles in pipes and their effects on gas meter behaviour［J］. Measurement, 1997, 22(1/2): 1-14.
［7］ISLAM M, SESHADRI V, SINGH S N, et al. Skewed velocity profile effect on turbine flowmeter performance ［J］. Journal of Process Mechanical Engineering, 2003, 217(7): 25-32.
［8］Wang Z, Zhang T. Research on tangential type turbine flowmeter based on simulation ［A］.Proceedings of the 2007 IEEE International Conference on Mechatronics and Automation［C］, Harbin, China, 2007: 3094-3099.
［9］HUWENER TH, VON LAVANTE E, ERNST R, et al. Numerical investigation of flow effects on accuracy in turbine flow meters ［A］.Proceedings of the 7th International Conference on Flow Measurement［C］, Glasgow, Scotland, 1994.
［10］von LAVANTE E, BANASZAK U, KETTNER T, et al. Numerical simulation of Reynolds Number effects in a turbine flow meter ［A］.Proceedings of the 12th International Conference on Flow Measurement［C］, Guilin, China, 2004: 575-582.
［11］Sun L J, Zhou Z Y, Zhang T.Numerical simulation of turbine flowmeter’s three-dimensional flow fields ［A］.Proceedings of the 6th World Congress on Intelligent Control and Automation［C］, Dalian, China, 2006: 5023-5027.
［12］刘正先,徐莲环. 涡轮流量计前导流器的结构与性能 ［J］. 机械工程学报, 2008, 44(1): 233-237.
2010, Vol. 31 
