Erosion and wear characteristics of slurry jet pump
In order to study the erosion wear characteristics of the slurry jet pump,a numerical simulation of the solid-liquid two-phase flow inside the slurry jet pump was carried out based on the Euler-Lagrange method with focus on the erosion wear law of the liquid-solid two-phase flow.The results indicate that the inlet of the throat of the slurry jet pump and the middle and rear sections of the throat are the main parts where erosion wear occurs,and the suction chamber and diffuser tube do not have obvious erosion wear.When the particle mass flow increases from 1 kg/s to 1.8 kg/s,the maximum erosion rate of the slurry jet pump increases by 93.7%;When the slurry flow velocity increases from 2 m/s to 5 m/s,the max erosion rate increases by 11.48 times;when the particle diameter increases from 200 μm to 450 μm,the maximum erosion rate first decreases and then increases.The influence of the slurry flow velocity on the erosion wear of the jet pump is more significant compared with the influence of particle mass flow rate and particle diameter,but the main parts of the erosion wear will not change significantly with the three factors.The research results can provide a reference for the design of jet pumps.
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