Influence of flashboard location on flow resistance properties and internal features of gate valve under the variable condition

Lin, Zhe; Ma, Guangfei; Cui, Baoling; Li, Yi; Zhu, Zuchao; Tong, Nansen

doi:10.1016/j.jngse.2016.05.025

Cited by 31 publications

(17 citation statements)

References 18 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%

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%

Numerical Analysis of Woltman Meter Accuracy under Flow Perturbations

Palau

Balbastre

Manzano

et al. 2019

Water

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“…Parametric model of the valve body should be able to accurately reflect the actual situation of the structure [5][6][7], that is to say, its shape, boundary conditions and loads should keep consistent with actual situation. The model should be simplified as much as possible on the premise of guarantee calculation precision, therefore those characteristics which do not affect the valve body overall performance can be simplified in the process of modeling.…”

Section: Modelingmentioning

confidence: 99%

Strength Analysis and Structure Optimization of Gate Valve Body Based on Finite Element Software

Zhang

Tian

2019

E3S Web Conf.

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Stress concentration zone and maximumdeformation zone ofgate valve at 1.6MPaworking pressure were found out according to strength calculationand analysisby ANSYSsoftware, which proceedsthe processes of modeling, meshing, constraintsdefine, applyingloadsand solving. Design variables,state variablesand optimize targetswere defined by target optimization design function of ANSYS Workbenchin ordertoreveal the influence law of eachdesign variable onthe gate valve body equivalent stress,and the optimal valuesof design variablescould be obtained after calculation. The valve structure was improved and stress concentration was reduced from the perspective of safety and economy,whichcouldprovidea referencefor reliable valvedesign.The shape of the valve body was optimized by topology optimization design in order to achieve the rational use of materials.Researchresultsshow that the maximum stress lies on both sides of the valve rib plateand the stress is beyond thematerial allowable value, but the valve body has little deformation.After optimization the maximum equivalent stress of valve body is decreasedby23.91%and the valvebodyhasuniformstress distribution, the mass of the valve body is reduced by1.4%as well. Material utilization is improvedeffectively,which indicates that the optimizationdesignbased onANSYS Workbenchis highly efficient and reliable.

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“…In process machinery, pumps, valves, pipes, absorption tower, fluid-bed and other devices which involve complex flow or heat transfer are indispensable [1][2][3][4][5][6][7][8][9][10][11][12][13]. Among them, the valve is an important controlling device for opening and closing pipelines, adjusting the flow direction and regulating the transmission of the medium [14][15][16][17][18][19][20]. Due to its various features and functions, the valve is widely used in life and in industrial fields.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis to the Effect of Guiding Plate on Flow Characteristics in a Ball Valve

et al. 2020

Self Cite

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When internal flows go through a valve with a small opening degree, high-speed jet flows are induced, which causes the erosion of the valve core and affects the stability of the flow field. Setting guiding plates in the valve behind the valve core has the function of reducing the adverse effect of high-speed jet flows. In this work, numerical simulations were carried out to investigate the effect of the guiding plate on flow and resistance coefficient, velocity and pressure distributions and flow stability downstream of the valve. The number of guiding plates was changed from 0 to 3 and the opening degree was varied from 0 to 100% at intervals of 10%. A guiding plate with holes in it plays the role of bypassing and guiding flow. Under the action of the guiding plate, the flow coefficient obviously decreases, the gap flow between the valve core and the valve wall in the top of the valve are modified, and the gap flow even disappeared in the valve with 3 guiding plates. It was found that setting the guiding plate can improve the performance of the ball valve, reducing the internal erosion and increasing the stability of valve downstream flow efficiently.

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Influence of flashboard location on flow resistance properties and internal features of gate valve under the variable condition

Cited by 31 publications

References 18 publications

Numerical Analysis of Woltman Meter Accuracy under Flow Perturbations

Numerical Analysis of Woltman Meter Accuracy under Flow Perturbations

Strength Analysis and Structure Optimization of Gate Valve Body Based on Finite Element Software

Numerical Analysis to the Effect of Guiding Plate on Flow Characteristics in a Ball Valve

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