FLUID DYNAMICS INVESTIGATION ON THE BODY STRUCTURE INSIDE A SLEEVE REGULATING VALVE

摘要

The sleeve regulating valve is a typical flow regulating component, which is indispensable in various industrial applications. This work investigates the effects of the body structure on the overall performance and the flow characteristic of a sleeve regulating valve. The anterior cavity h, the diameter of the center cavity D_c, and the eccentricity of the center cavity e are studied in a parametric way. When the relative increment of h, D_c, and e all take the value of 0.15, the rated flow coefficient K_(ve) of the optimized valve is promoted by 33.99% relative to the K_(ve) of the original model. The optimized model presents less wear between the valve core and the sleeve relative to the original model. It results from the fact that the non-centrosymmetric pressure distribution is reduced on the valve core. Besides, the optimized model has smaller lateral fluid force imposed on the valve core F_L than the original model when the relative travel L/L_(max) 0.625, and they have close F_L in the other range. Also, the optimized model has larger axial fluid force imposed on the valve core F_A than the original model when L/L_(max) ＞ 0.875, and they have close Fa in the other range.