Optimization design for back-wall shape of bell-like inlet passage in mixed-flow pump Pump sump is the connection between the flange of the inlet of the pump and the inlet of the impeller .

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The flow conditions in the pump suction sump are very complex there are kinds of vortices in and around the pump bell these are common problems which lead to poor pump performance .

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AN EXPERIMENTAL STUDY OF AN OPEN PUMP SUMP WITH BACKWARD-FACING STEP FLOW Numerical simulation for the flow characteristics in the pump sump

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The forebay of a pumping station is a segment that connects intake channel and intake sump and it can make the flow in the intake channel spread smoothly into the intake sump so that each pump unit has a more smooth flow pattern .

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A pump sump is a transition segment which connects a forebay and the intake of a pump the aim of which supplies the good flow condition for the intake of the pump and satisfy the conditions of the hydraulic design of the pump .

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Influence of the Flow Pattern in the Sump on the Flow Field of Pump Inlet

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Pump sump is the connection between the flange of the inlet of the pump and the inlet of the impeller .

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Therefore the good or bad condition of flow in the sump directly exerts an influence on the flow field of the pump inlet and consequently leads to poor pump system performance .

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The function of water diversion system of the pumping station is to ensure adequate water current flow evenly into pump sump or inlet conduit and to offer pump fine flow conditions .

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And the list is ; reactor vessel integrity which as you probably realise now is reactor vessel embrittlement pressurised water sump pump performance we 'll look at that .

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In this paper the open sump flow with vertical intake is simulated with calculation fluid dynamics method according to model-test reports of Lianhu pump station .

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The design of the pump suction sump will influence the running efficiency and security performance . In this new pump suction sump there are three special design characters : closed structure double inlet and double track structure and transition plane structure .

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As the main underground water storage and the mining area sump charged with the task of the mine water excluded the performance of its direct impact on pump capacity and mine safety .

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The other issue is this next issue that I wanna talk about is sump pump performance .

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This paper introduces a reformed automatic control technique for sump pump system .

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In this paper the non-uniform flow in the open pump sump was measured by the 2D PIV system . The height distribution of free water surface was obtained by image processing technology which showed the influence of non-uniform flow on the flow situations in pump sump .

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Air induced by entrained-vortex occurring in the pump sump can be absorbed into the pump which can influence the operation stability of pump and reduce the pump performance .

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Flow pattern evolution in plunge pools of high dam Influence of the Flow Pattern in the Sump on the Flow Field of Pump Inlet

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