Analysis of Abrasion Characteristics of Double-Suction Pumps under Sandy Flow
In order to deeply analyse the abrasion characteristics of double-suction pump under sandy flow,the RNG model is used to calculate the shear force,sediment distribution and solid-liquid sliding speed of the front and back of the vane,and then analyse the influence of sand content,sand diameter and inlet flow rate on abrasion based on orthogonal test method.The study shows that under the sand content flow,the sand particles on the front and back of the blade are mostly concentrated at the inlet.The solid-liquid slip velocity is most affected by the sand grain diameter,and the solid-liquid slip velocity increases when the sand grain diameter increases.Among the three factors,the sand particle diameter has the greatest weight on the influence of double suction pump abrasion,followed by sand content,and the influence of flow rate is relatively less.
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