Test research on flow patterns at intake area of a pumping station

Abstract

Abstract This paper focuses on the problem of the flow pattern in the inlet area of a drainage pumping station for its safety. Limited to the restrictions on terrain conditions and surrounding constructions, this pumping station was designed with a compact layout which could not followed by regular standards. The small size may affect the hydraulic conditions at the intake of this pumping station, which in turn will affect the safe operation of the project. Therefore, in order to ensure whether the pumping station works stably, it is necessary to conduct an intensive study on the flow pattern at the intake area of this pumping station via a model test. Research shows that the original design may bring hydraulic problems. In the test, we found intermittent suction vortexes in the inlet area. This hydraulic phenomenon should be avoided in the inlet area of pump stations. In this case, it is proposed to reduce the elevation of the water intake system to increase the depth of submergence. According to the test results, harmful vortexes disappeared and the water flow became smoother in all operating conditions after adopting improvement measures. This shows that the proposal is effective and makes the project safer.