Determination of centrifugal pump efficiency based on cradle cad evaluation experiment

Abstract

Kazakhstan is a country with a significant resource base, a favorable location and a unique opportunity to supply fossil fuels to Europe and to dynamically developing Asian markets, including China. The article provides brief information on the indicators of pipeline transport in Kazakhstan. The development of energy conservation determines the importance of improving the efficiency of equipment that uses most of the energy consumed. Pumping equipment is one of the most significant consumers of electrical energy. In Kazakhstan, the share of the transport component in the cost of production is large. Kazakhstan's commitment to sustainable development goals creates the need for more economical energy consumption. As a rule, a sixth of the cost of oil transportation is the cost of electricity, which is spent on driving pumping equipment. Therefore, work on the creation of energy-efficient pumps is relevant. The paper proposes a new impeller configuration (with variable vane curvature) for double suction centrifugal pumps with higher efficiency. The head and efficiency of the centrifugal pump were compared with different vane screens. The proposed changes in the design of the centrifugal pump result in an increase in static pressure and relative velocity, which leads to an increase in hydraulic and overall efficiency, and the kinetic energy of turbulence reduces its pulsation. At the same time, the operating point of the pump is shifted towards a decrease in supply by 1.5%.