Abstract:To improve the water quality of the Suzhou River and make up for the insufficient power of the related branch water flow, and combined with the Suzhou River Environmental Comprehensive Improvement Phase IV Project, 12 one-way pump gates in Minhang District are successively reconstructed into the two-way functions. There is a problem that the space scale of inflow into the original pumping station is restricted during the process. In order to achieve the optimal shape of the inflow channel of the pumping station, the hydraulic performance is good after supported with submersible pumps. The safe and stable operation of the pumping station after its completion is guaranteed, and the benefits are efficiently generated. It is necessary to reconstruct the inlet flow channel. Taking a pump gate along the Suzhou River as an example, four reconstruction schemes are proposed for the inlet flow channel, namely, setting up a diversion pier at the pump intakes, installing a short partition, installing a long partition, and setting up a diversion pier + installing a short partition. The three-dimensional turbulent flow and hydraulic performance of the two-way influent and effluent channel submersible pump devices are studied by using the CFD numerical simulation method. The flow fields and hydraulic performances of the internal flow channels under different schemes are analyzed and evaluated. The results show that installing long partitions is the best choice. The project after being implemented and tested has the good effects.
