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Design of bladeless impellers for abrasive fluid pumping
Journal of the Brazilian Society of Mechanical Sciences and Engineering ( IF 1.8 ) Pub Date : 2021-03-30 , DOI: 10.1007/s40430-021-02954-1
Edson Alves Figueira Júnior , Carlos Hanieri de Freitas Oliveira , Valério Luiz Borges , Solidônio Rodrigues de Carvalho

Centrifugal pumps are commonly used by mineral processing companies, such as Vale, CBMM, Kinross, and Anglo-American. As a consequence of the presence of abrasive particles in the mineral pulp, their housing and impellers readily wear out. As a result, industrial companies invest a lot of their financial resources in the maintenance of these pumps, in addition to replacing their damaged mechanical parts. To solve this problem, some researchers have been proposing novel metal alloys to improve centrifugal pump properties and mechanical endurance. In an attempt to explore a new approach, this study focuses on the disc impellers reported in Nikola Tesla’s patents. In the laboratory, an experimental bench was developed to simulate the pumping of a highly abrasive pulp composed of water and silicon carbide. An impeller base was designed to allow the assembly of 2, 3 and 4 discs. It was observed that an increase in the number of discs resulted in increased pump performance. However, the dimensions and distance between the discs depend on operational parameters, such as: dimensions of the housing and the abrasive particles to be pumped. Besides, disc impellers need to operate at higher rotations to reach the same flow and total head obtained from commercial blade impellers. In this work, the wear on the casing and on the three-disc and semi-open impellers was quantified by measuring mass losses. The disc impellers showed less wear, which provides an increase in their useful life. In addition, a three-disc impeller demonstrated high performance when compared to a semi-open impeller.



中文翻译:

磨料泵送无叶轮的设计

选矿公司(例如Vale,CBMM,Kinross和Anglo-American)通常使用离心泵。由于矿浆中存在磨料颗粒,其外壳和叶轮很容易磨损。结果,除了更换损坏的机械零件外,工业公司还将大量财务资源投入到这些泵的维护中。为了解决这个问题,一些研究人员已经提出了新颖的金属合金来改善离心泵的性能和机械耐久性。为了探索一种新的方法,本研究着重于尼古拉·特斯拉的专利中所报道的盘式叶轮。在实验室中,开发了一个实验台来模拟由水和碳化硅组成的高磨蚀性纸浆的泵送。叶轮底座的设计允许组装2个,3个和4个圆盘。可以看到,碟片数量的增加导致泵的性能提高。但是,盘之间的尺寸和距离取决于操作参数,例如:外壳和要泵送的磨料颗粒的尺寸。此外,盘式叶轮需要以更高的转速运转,以达到相同的流量和从商用叶片式叶轮获得的总扬程。在这项工作中,通过测量质量损失来量化壳体以及三盘式和半开放式叶轮上的磨损。盘式叶轮的磨损较小,从而增加了使用寿命。此外,与半开式叶轮相比,三盘式叶轮表现出较高的性能。可以看到,碟片数量的增加导致泵的性能提高。但是,盘之间的尺寸和距离取决于操作参数,例如:外壳和要泵送的磨料颗粒的尺寸。此外,圆盘式叶轮需要以更高的转速运转,以达到从商用叶片式叶轮获得的相同流量和总扬程。在这项工作中,通过测量质量损失来量化壳体以及三盘式和半开放式叶轮上的磨损。盘式叶轮的磨损较小,从而增加了使用寿命。此外,与半开式叶轮相比,三盘式叶轮表现出较高的性能。可以看到,碟片数量的增加导致泵的性能提高。但是,盘之间的尺寸和距离取决于操作参数,例如:外壳和要泵送的磨料颗粒的尺寸。此外,圆盘式叶轮需要以更高的转速运转,以达到从商用叶片式叶轮获得的相同流量和总扬程。在这项工作中,通过测量质量损失来量化壳体以及三盘式和半开放式叶轮上的磨损。盘式叶轮的磨损较小,从而增加了使用寿命。此外,与半开式叶轮相比,三盘式叶轮表现出较高的性能。例如:外壳的尺寸和要泵送的磨料颗粒。此外,圆盘式叶轮需要以更高的转速运转,以达到从商用叶片式叶轮获得的相同流量和总扬程。在这项工作中,通过测量质量损失来量化壳体以及三盘式和半开放式叶轮上的磨损。盘式叶轮的磨损较小,从而增加了使用寿命。此外,与半开式叶轮相比,三盘式叶轮表现出较高的性能。例如:外壳的尺寸和要泵送的磨料颗粒。此外,圆盘式叶轮需要以更高的转速运转,以达到从商用叶片式叶轮获得的相同流量和总扬程。在这项工作中,通过测量质量损失来量化壳体以及三盘式和半开放式叶轮上的磨损。盘式叶轮的磨损较小,从而增加了使用寿命。此外,与半开式叶轮相比,三盘式叶轮表现出较高的性能。通过测量质量损失来量化壳体以及三盘式和半开放式叶轮上的磨损。盘式叶轮的磨损较小,从而增加了使用寿命。此外,与半开式叶轮相比,三盘式叶轮表现出较高的性能。通过测量质量损失来量化壳体以及三盘式和半开放式叶轮上的磨损。盘式叶轮的磨损较小,从而增加了使用寿命。此外,与半开式叶轮相比,三盘式叶轮表现出较高的性能。

更新日期:2021-03-30
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