Research on the Erosion Performance of a New Normally Open Arrow-Type Check Valve Spool

Abstract

In this paper, the erosion performance of a new normally open arrow-type check valve spool was studied by the CFD method. The liquid phase is regarded as a continuous phase, and the particles are solved by a discrete phase model. Based on the verified numerical model, the effect law of five key factors, such as sealing surface Angle α/2, β/2, and particle mass flow rate, on the erosion of the valve spool sealing surface (VSSS) was studied. The maximum erosion rate of the VSSS is used as the evaluation index. The results show that the lower end of the sealing surface is the area with the most serious erosion damage to the VSSS, and the damage degree increases with the increase of α/2. In addition, the maximum erosion rate of the VSSS increases with the increase in particle mass flow and particle diameter and decreases with the increase in fluid viscosity. In terms of structure, reducing the sealing surface angle α/2 can reduce the erosion damage to the VSSS.