IMPROVEMENT OF THE DESIGN OF TURBOMACHINES

https://doi.org/10.48498/minmag.2022.209.9.002

The purpose of the research is: the study of hydraulic losses in pumping units during pumping and transportation of liquids, development of constructive and technological solutions to improve the energy efficiency of centrifugal pumps. The study used theoretical and experimental analyzes of hydraulic losses during the transportation of liquids. Centrifugal pumps operating with incompressible fluid flows are a type of hydraulic turbomachines. Increasing the efficiency of centrifugal pumps is one of the goals that are solved in this article by coaxial arrangement of the impellers in the flow part of the pump. Based on the results of calculations and experimental studies to substantiate the proposed design and technical solutions, establish rational operating modes and determine hydraulic losses with coaxial impellers, it has been established that, compared with existing schemes for the axial arrangement of impellers, the energy efficiency of centrifugal pumps increases by 23%, pressure-flow characteristics increase.

*G.K. Akanova, I.N. Stolpovskikh, A.D. Kolga, S.V. Podbolotov