Study on the Clearance of Impeller and Draft-Tube on Stamping and Welding Multistage Centrifugal Pump

Abstract

Based on the Renault-averaged Navier-Stokes equations and a standard turbulence model, the different clearance of the outer edge on the impeller and the draft-tube is simulated by the commercial software CFX, in order to achieve optimal performance. The velocity distributions and pressure distributions within the stamping and welding multistage centrifugal pumps are analyzed. The reasonable clearance value which impact on its performance and properties have been discovered. This paper is helpful to improve the design theory of stamping and welding multistage centrifugal pumps.

Numerical Simulation of Internal Flow in Stamping and Welding Multistage Centrifugal Pump

“…Table 1 shows the design parameters of the impeller. In order to save mould, different stamping pump having a certain range of flow often share draft tube [1], so shared draft tube 3D model has been build, and assembled them using the way shown in figure 1. At last, assemble model of impeller and draft tube was built in the way of sweep and differencing which include inlet section, impeller, casing and outlet section.…”