Abstract:The rotor component of submersible axial flow pump was calculated under multiple conditions using CFX and Workbench software to analyze the stress and strain distribution by the action of fluid force,centrifugal force and gravity. Moreover, the possibility of failure caused by large deformation and insufficient strength was pointed out. The results showed that the radial force was the minimum under the standard condition. The direction of axial force in the hub was opposite to that in the impeller. The axial force was increased with the flow rate increasing. The hub could balance the axial force well under the large flow condition. The radial deformation was extremely smaller than the circumferential deformation which was the main deformation in the impeller. This may mean that the torque plays a major role in the total deformation. The pressure on the suction surface was significantly lower than that on the pressure surface.Near the inlet side of the hub appeared the high stress area,in which would emerge stress concentration. The main stress was reduced with the flow increasing. The static structural analysis and strength assessment of the axial pump could not only reduce the incidence of accidents, but also provide a powerful reference for axial flow hydraulic design optimization.
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