关键词: 海洋采矿, 提升电泵, 优化设计, 数值模拟

Abstract: The optimum design method was put forward based on the N-S equation and standard k-ε turbulence model for coarse particle and high head lifting motor pumps for deep sea mining, that included optimum design of pump structural parameters, flow analyses, performance parameter prediction and reverse revise design. Optimum design, flow analyses, performance parameter prediction of 8-stage lifting motor pumps were carried out for China' deep sea poly-metallic nodule mining pilot systems by using this design technique. Comparing this research results with the experimental ones of China' first 2-stage lifting motor pumps, it is shown that 8-stage lifting motor pump has nice performance parameters and satisfies requests for the deep sea mining pilot systems, the single-stage head and efficiency are improved, which shows that the optimum design is reasonable and feasible.

Key words: ocean mining, lifting motor pump, optimum design, numerical simulation