粗颗粒海底矿石浆体提升电泵研究

Study on Lifting Motor Pumps for Coarse Particle Slurry in Sea Bed Mining

基于N-S方程和标准k-ε湍流模型,提出了适用于深海采矿的粗颗粒高扬程提升电泵的优化设计方法,该方法由泵结构参数的优化设计、流动分析、特性预测和反求修正设计四部分构成。应用该方法进行了我国深海多金属结核采矿海试系统八级提升电泵的优化设计、流动分析与特性预测,将该八级提升电泵仿真模拟结果与我国研制的首台两级提升电泵实验结果进行对比,表明该泵能获得较好的工作特性指标,满足多金属结核采矿海试系统的要求,其单级扬程和效率有较大的提高,说明该优化设计方法是合理可行的。

The optimum design method was put forward based on the N-S equation and standard k-εturbulence 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.