Research on the measuring characteristics of a new design butterfly valve flowmeter

Mu, Yuanpeng; Liu, Mingsheng; Ma, Zhixian

doi:10.1016/j.flowmeasinst.2019.101651

Cited by 20 publications

(9 citation statements)

References 25 publications

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“…Studies show that CFD techniques can be used to evaluate the hydraulic behaviour of flow regulating valves. Research on butterfly valves under different opening range [26,37,38], and gate valves under different opening [4,39] or partial closing [33] conditions has been computational simulated under a wide range of flow conditions, using standard k-ε turbulent model with CFD solver software.…”

Section: Computational Fluid Simulationmentioning

confidence: 99%

“…Some studies have validated CFD techniques to simulate the operation of water meters [16,25] and correspondingly, the influence of hydraulic fittings [8,26] or other structures [27] on the distortion of the measured flow. The use of CFD numerical models can effectively reduce the high cost of experimental testing with turbine flowmeters [28].…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis of Woltman Meter Accuracy under Flow Perturbations

Palau

Balbastre

Manzano

et al. 2019

Water

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One of the unknowns in the instrumentation for water measurement is what degree of influence other hydraulic elements exert on the velocity profile and, consequently, on the measurement errors. In this work, the measurement errors of a horizontal-axis Woltman meter produced by a gate valve and by a butterfly valve in different hydraulic configurations were studied using a simplified numerical model. The gate valve was installed beside the meter and three pipe diameters upstream of the meter and were operated with closures of 75%, 50% and 25%, while the butterfly valve was installed at three pipe diameters upstream of the meter with closures of 0 • (open) and 30 • . The numerical model based on the rotor's torque balance equations and Computational Fluid Dynamics (CFD) was validated by experimental tests. According to the results, it was concluded that the proposed model is valid and capable of estimating the errors caused by the hydraulic fittings arranged next to the meter. In addition, it is evident that for the analysed operating range, both valves must be installed at least three diameters of straight pipe upstream of the meter. Author Contributions: Conceptualization, C.V.P.; methodology, C.V.P., I.B. and J.M.; software, C.V.P., I.B. and J.M.; formal analysis, C.V.P., I.B. and J.M.; investigation, C.V.P., I.B.P. and J.M.; data curation, C.V.P., I.B.P. and J.M.; writing-original draft preparation, C.V.P.; writing-review and editing, C.V.P., B.M.A. and G.V.B.; visualization, C.V.P. and G.V.B.; supervision, C.V.P., B.M.A. ad J.M. Funding: This research received no external funding. Conflicts of Interest:The authors declare no conflict of interest.

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Section: Computational Fluid Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Woltman Meter Accuracy under Flow Perturbations

Palau

Balbastre

Manzano

et al. 2019

Water

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“…The regulating valves are important components in the fluid transportation pipeline system. The flow field near the valve will become complicated when the fluid passes through the valve flow passage, especially when the valve is working at a small opening, which will cause both valve and pipe to be seriously damaged and cause a large number of energy loss in the fluid transportation pipeline system [1][2][3][4]. Therefore, it is of great practical significance to master the flow characteristics of the fluid in the throttling process of the regulating valve and optimize the design and operation of the pipeline system according to the characteristics.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of regulating characteristics between air-ring flow regulating valve and center butterfly valve

Liu

Chen

2021

PLoS ONE

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In this study, a novel air-ring flow regulating valve was proposed to reduce the flow resistance caused by valve structural pressure drop in fluid transportation pipeline system. The regulating characteristics at different valve openings were analyzed by numerical method and the results were compared with the center butterfly valve which is most widely applied in fluid transportation pipeline system. Besides, an experimental system was designed to validate the numerical model in the present study. The results indicated that the simulation results agree well with experimental data. The resistance coefficient of the air-ring flow regulating valve is smaller than that of the center butterfly valve when the valve opening is greater than 67%, and the resistance coefficient is reduced by up to 100% as the valve is fully opened. Both valves maintain approximately equal percentage flow characteristics, the deviation in relative flow coefficient is small. In addition, the wall shear stress of the air-ring flow regulating valve is much smaller than that of the center butterfly valve at the same valve opening, and the maximum velocity in the pipeline system is always smaller than that of the center butterfly valve, which significantly reduces valve surface abrasive erosion and thus prolongs its service life.

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“…Some other researches focused on the flow characteristics under various conditions to understand the property of flow throttling [10,11]. More recently, it was reported that the differential pressure caused by the butterfly valves could be used for flow measurement [12,13]. Different from other kinds of butterfly valves, the link rod butterfly valve uses a four-bar linkage mechanism to drive the valve plate [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of flow field in link rod butterfly valve for high-temperature steam

Kan

Chen

2020

J Braz. Soc. Mech. Sci. Eng.

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The link rod butterfly valve, which uses a four-bar linkage mechanism to drive the valve plate, is a promising candidate for treating high-temperature steam and industrial exhaust because of its reliable sealing property. In this paper, the 3D flow field in the link rod butterfly valve for high-temperature steam was simulated using computational fluid dynamics. The flow coefficient of the valve, the velocity field, the temperature distribution and the enthalpy change in the steam under different valve openings were studied. The results showed that the flow coefficient of the link rod butterfly valve increased with an accelerated slope as the rotation angle of the valve stem was enlarged over 60°. The velocity and the vorticity of the steam were dramatically increased near the valve. The steam branches were accelerated up to 15 times the inlet flow velocity when they passed through the gaps between the valve plate and the valve body, and the vorticity was as large as 76/s. The temperature of the steam passing through the valve was decreased by 50-108 K for different openings. The temperature difference in the steam on the valve plate was as high as 400 K, which makes a challenge for the material of the valve plate. Larger enthalpy drop of the steam was resulted in when the valve was working at the throttling state than fully opened. Local peaks for the enthalpy drop were observed as the valve stem was rotated by 30° and 60°, and the local valley was at about 50°. The present study may serve as a useful reference for the design of link rod butterfly valves.

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Research on the measuring characteristics of a new design butterfly valve flowmeter

Cited by 20 publications

References 25 publications

Numerical Analysis of Woltman Meter Accuracy under Flow Perturbations

Numerical Analysis of Woltman Meter Accuracy under Flow Perturbations

Comparative analysis of regulating characteristics between air-ring flow regulating valve and center butterfly valve

Numerical analysis of flow field in link rod butterfly valve for high-temperature steam

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