27-50 OPTIMIZAREA FORMEI DISCULUI VANEI FLUTURE CU COEFICIENT DE REZISTENȚĂ HIDRAULICĂ DE 0,07


BUTTERFLY VALVE DISC SHAPE OPTIMISATION FOR HYDRAULIC RESISTANCE COEFFICIENT 0.07
The paper presents the optimization of butterfly valve disc shape to obtain hydraulic resistance coefficient 0.07 by numerical methods and by experimental measurements realized in Hydro-Engineering Co. Reşiţa. It is presented the test stand, the optimized butterfly valve disc model which measurements were made and the results of model tests. The results of model tests conducted by similarity criterion for butterfly valve with nominal diameter 4900 mm and nominal pressure of 170 mwc consists of determining the hydraulic resistance coefficient and consequently the flow coefficient and the determination of forces and moment coefficients, the coefficient of cavitation and vibration level.
Keywords: disc butterfly valve, hydraulic resistance coefficient, numerical analysis
Cuvinte cheie: disc vană fluture, coeficient de rezistență hidraulică, analiză numerică

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