Optimization of the Structural Parameters of a Plastic Centrifugal Pump in the Framework of a Flow Field Analysis

Abstract

In order to determine the optimal structural parameters of a plastic centrifugal pump in the framework of an orthogonal-experiment approach, a numerical study of the related flow field has been performed using CFX. The thickness S, outlet angle β2, inlet angle β1, wrap angle, and inlet diameter D1 of the splitter blades have been considered as the variable factors, using the shaft power and efficiency of the pump as evaluation indices. Through a parametric analysis, the relative importance of the influence of each structural parameter on each evaluation index has been obtained, leading to the following combinations: β1 19°, β2 35°, S 2 mm, wrap angle 154°, and D1 85 mm (corresponding to the maximum efficiency of 75.48%); β1 19°, β2 20°, S 6 mm, wrap angle 158°, and D1 81 mm (corresponding to the minimum shaft power of 75.48%). Moreover, the grey correlation method has been applied to re-optimize the shaft power and efficiency of the pump, leading to the following optimal combination: β1 19°, β2 15°, S 4 mm, D1 81 mm, and wrap angle 152°(corresponding to the maximum efficiency of 71.81% and minimum shaft power of 2.187 kW).

Optimisation Methodology for Skimmer Device Selection for Removal of the Marine Oil Pollution

“…Some pumps are used to transfer oil between tanks. The centrifugal pump is the most common pump used in accidental oil pollution [26]. Here, the oil flows from the direction of pumping to the pressure side by the action of centrifugal forces.…”

“…Here, the oil flows from the direction of pumping to the pressure side by the action of centrifugal forces. The radial flow pushes the oil between the blades of one or more rotors [26,27]. Centrifugal pumps are suitable for all applications except for small quantities, low speeds, and liquids with a high viscosity.…”

Optimal design of impeller for self-priming pump based on orthogonal method

“…In recent years, many scholars at home and abroad have conducted in-depth research on the relationship between the geometric parameters of self-priming pumps and their performance. Luo et al 1 combined orthogonal experimental methods and gray correlation method to investigate the influence of structural parameters such as blade thickness, impeller inlet and outlet angles, the wrap angle and splitter blade diameter on the hydraulic performance of the centrifugal pump. Through data analysis, the optimal combination of parameters for the corresponding evaluation indexes was derived.…”