Numerical optimization method for pump pit of flow isolation type integrated prefabricated pump station

Abstract

The invention discloses a numerical optimization method for a pump pit of a flow isolation type integrated prefabricated pump station. The method comprises the following steps: designing the flow isolation type integrated prefabricated pump station; calculating an internal flow field of a submersible sewage pump in the integrated prefabricated pump station by adopting LES, and carrying out test verification; calculating a solid-phase movement track in the integrated prefabricated pump station based on the DPM, and comparing the solid-phase movement track with a test result; establishing a calculation equation of the deposition rate of the particles and the area ratio of the easy-to-deposit area on the surface of the pump pit; taking the minimum deposition rate of the particles, or the minimum area ratio of the easy-to-deposit area on the surface of the pump pit, or the minimum deposition rate of the particles and the minimum area ratio of the easy-to-deposit area on the surface of thepump pit as a target function; through taking the main geometrical parameters of the pump pit as design variables, performing numerical optimization on the pump pit of the flow-isolating integrated prefabricated pump station by means of a response surface method, so that the optimal shape of the flow-isolating pump pit is determined. The invention provides the numerical optimization method for a pump pit of a flow-isolating integrated prefabricated pump station, and provides theoretical support for designing an anti-silting pump pit.

Description

technical field [0001] The invention belongs to the field of fluid machinery design, and in particular relates to a numerical optimization method for a pump pit of a flow-blocking integrated prefabricated pump station. Background technique [0002] The integrated prefabricated pumping station is an integrated product integrating submersible sewage pump, pumping station equipment, decontamination grille equipment, control system and remote monitoring system. It is characterized by flexible maneuvering, extremely short construction period, easy installation, unattended and remote monitoring functions, and is suitable for application in urban sewage treatment. However, due to the highly integrated and automated features of the prefabricated pumping station, the manual cleaning cycle is usually measured in months. Once the sediment and debris are deposited, they will not be cleaned effectively for a long time, which will greatly affect the internal quality of the prefabricated p...

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Problems solved by technology

[0004] With the development of computational fluid dynamics, numerical optimization is widely used in the structural design of hydraulic machinery, but there are no related reports on the structural optimization of integrated prefabricated pumping stations based on numerical simulation.

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