Modernized suction bell of axial-flow chemical pump
DOI:
https://doi.org/10.15587/1729-4061.2015.39454Keywords:
suction bell, hydraulic losses, axial-flow chemical pump, numerical simulationAbstract
The design of the axial-flow chemical pump with the GI (guide vanes - impeller) type blade system, which provides a lower process time of the chemical reaction in the phosphoric acid manufacture was proposed in the paper.
The flow structure in the suction bell of the axial-flow chemical pump was investigated. By visualizing the calculation results, main causes and zones of hydraulic losses were found. Taking into account the results, modernizing existing suction bell was proposed, and numerical simulation of the flow in it was performed. The main condition for modernization was to preserve the flow parameters at the impeller inlet (absolute velocity, flow angle, circulation) with a simultaneous decrease in hydraulic losses. Since the losses are significantly affected by vortices which are formed on the blades, a decision on their dispersion was made. Numerical study of the flow in the modernized suction bell has shown almost double decrease in hydraulic losses. As a result of calculations, the design of the spatial flow in the suction bell of the axial-flow chemical pump was obtained.
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Copyright (c) 2015 Ольга Анатоліївна Матвієнко, Марина Леонідівна Заїкіна
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