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多级混流泵颗粒磨损特性研究

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采用离散相固液两相流模型耦合Oka磨损模型,考虑颗粒运动速度和入射角度,研究多级混流泵内颗粒对叶轮和导叶等过流部件壁面的磨损特性,分析运行流量变化对多级混流泵叶轮和导叶颗粒磨损特性的影响规律.研究表明,多级混流泵内颗粒在叶轮进口、叶轮出口和导叶压力面外缘处产生的磨损较为严重,叶轮叶片和导叶叶片的表面颗粒磨损区域主要呈现带状分布.多级混流泵在小流量工况下运行时,叶轮前盖板的颗粒磨损较为严重,随着运行流量的逐渐增大,叶轮后盖板、叶轮叶片、导叶叶片表面的颗粒磨损逐渐加剧.研究结果为固液两相流多级混流泵的设计和优化提供了理论参考.
The discrete phase solid-liquid two-phase flow model coupled with the Oka wear model was used,the particle movement velocity and incident angle were considered,the wear characteristics of particle in the multistage mixed-flow pump on the wall surfaces of the impeller and guide vane and other overflow parts were studied,and the influence of the operating flow rate change on the particle wear characteristics of the impeller and guide vane of the multistage mixed-flow pump was analyzed.The result shows that the wear generated by particle in the multistage mixed-flow pump at the impeller inlet,impeller outlet and the outer edge of the guide vane pressure surface is serious,and the surface particle wear areas of the impeller blade and guide vane blade are mainly distributed in a band-like manner.When the multistage mixed-flow pump is running under small flow condition,the particle wear of the impeller front cover plate is more serious,and with the gradual increase of the operating flow rate,the particle wear on the surface of the impeller back cover plate,impeller blade and guide vane blade gradually intensifies.The research result provided a theoretical reference for the design and optimization of solid-liquid two-phase flow multistage mixed-flow pump.

Mixed-Flow PumpParticleWearStudy

王卫现

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上海凯士比泵有限公司 上海 200245

混流泵 颗粒 磨损 研究

2024

装备机械
上海电气(集团)总公司

装备机械

影响因子:0.158
ISSN:1662-0555
年,卷(期):2024.(4)