Panchenko V. Improve the technical level of the torque flow pump by improving the geometry of the impeller

The thesis is devoted to modeling of workflow of torque flow pump, which has advanced geometry of impeller, to study the influence of the ratio of geometric parameters of impeller on the characteristics of the pump in order to develop methodological recommendations for the calculation of new and improvement of the existing pumping equipment. The main content of the thesis is to improve the mathematical models of the workflow of a torque flow pump, which is based on the equation of difference between the moments of the amount of fluid motion exiting the pump impeller and entering it. The adequacy of the obtained model is confirmed by the results of experimental studies with obtaining the integral characteristics of a torque flow pump with different ratio of the geometrical parameters of the impeller. A theoretical study of the workflow gives an idea of the fluid flow in a torque flow pump free pump chamber. The analysis of the energy balance during the combined workflow application allows us to estimate the weight of each component of the energy transfer and conversion process and to formulate conditions for increasing the efficiency of the pump. The numerical study obtained the regularities of the distribution of the components of the absolute velocity of the fluid along the pump blades, which allowed us to solve the basic equation of the torque flow pump and obtain an improved mathematical model. The physical experiment at the test bench allowed us to confirm the results of the numerical study and the adequacy of the mathematical model obtained and to determine the dependence of the change in the optimal values of the pump operating parameters on the ratio of the geometric parameters of the flowing part. On the basis of the advanced mathematical model, in the light of the experimental data obtained, methodological recommendations were formulated to calculate new free-flow pumps and to improve existing ones by performing non-model changes in the flow part. The technical level of the pumping equipment has been evaluated using the Harrington method.