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http://dx.doi.org/10.5293/KFMA.2010.13.4.018

Effect of a Butterfly Valve on the Uncertainty of Flow Rate Measurement  

Yoon, Seok-Ho (한국기계연구원 그린환경에너지기계연구본부)
Lee, Jung-Ho (한국기계연구원 그린환경에너지기계연구본부)
Yu, Cheong-Hwan (한국기계연구원 정책연구실)
Park, Sang-Jin (한국기계연구원 정책연구실)
Chung, Chang-Hwan (한국원자력연구원 열수력안전연구부)
Publication Information
The KSFM Journal of Fluid Machinery / v.13, no.4, 2010 , pp. 18-24 More about this Journal
Abstract
For testing large-capacity pumps, the accurate flow rate measurement is needed in the test loop. As a measuring method of flow rate, venturi tube is recommended due to its low pressure loss. However, upstream disturbance of loop component such as a valve has an effect upon the accuracy of flow rate measurement. For controlling flow rate in case of high flow rate and large-scale piping system, a butterfly-type valve is generally used due to its compactness. However, a butterfly valve disturbs downstream flow by generating turbulence, cavities, or abrupt pressure change. In this study, the effect of downstream disturbance of butterfly valve on the flow rate measurement using a venturi tube is investigated. Test loop consists of circulation pump, reservoir, butterfly valve, venturi tube, and reference flow meter. The test is conducted with regard to a different valve opening angle of butterfly valve. According to the valve opening angle, the uncertainty of flow rate measurement is investigated.
Keywords
Butterfly Valve; Venturi Tube; Flow Rate Measurement; Uncertainty;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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