Design and analysis of an innovative deep-sea lifting motor pump |
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| Institution: | 1. School of Mechanical and Electrical Engineering, Central South University, Changsha, Hunan 410083, China;2. Department of Energy and Electrical Engineering, Hunan University of Humanities, Science and technology, Loudi, Hunan 417000, China |
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| Abstract: | The lifting motor pump is the core equipment of the deep-sea hydraulic pipeline lifting system, and its research results are one of the important technical reserves for the research and development of marine mineral resources. It is an essential capacity for lifting motor pump to allow coarse particles pass through the flow passages, to realize this requirement, an increased flowrate method is employed to design a wide flow passage for an innovative six-stage lifting motor pump. Based on Computational Fluid Dynamics (CFD), the anti-blocking performance of the lifting motor pump designed by the conventional method and the increased flowrate method are compared, which show that the latter is better than the former. Numerical simulations of the internal two-phase flow inside the innovative pump are presented, and the flow parameters such as pressure, velocity and particle trajectory are obtained. According to the design method of the six-stage lifting motor pump, a two-stage lifting motor pump is manufactured, and the relevant performance experiments are performed. The results obtained by numerical simulation is in a good agreement with the experimental ones, thus the validity and accuracy of the numerical model and method is verified. The innovative two-stage lifting motor pump can operate smoothly with low noise and no blockage occurs, and its performance meets the design goals and requirements. |
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| Keywords: | Lifting motor pump The increased flowrate method Wide flow passage Numerical simulation Performance experiments |
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