郭建军
GUO Jianjun

• 1:国能神东煤炭集团有限责任公司

摘要(Abstract)：

渣浆泵在输送固液两相浆液时，过流件会因固相颗粒的冲击产生磨损，颗粒的质量浓度、粒径均会对磨损程度产生较大影响。粗颗粒工况往往会导致渣浆泵过流件产生较大磨损，因此探究粗颗粒工况下渣浆泵磨损规律十分重要。建立了渣浆泵固液两相流仿真模型，分析了粗颗粒工况下(三种颗粒直径),渣浆泵内部流场及颗粒运动的变化规律。基于磨损模型，分析了渣浆泵不同过流件的磨损规律。结果表明：粗颗粒工况下，颗粒主要分布在蜗壳流道及叶片压力面。当颗粒直径为1 mm时，颗粒分布更分散，更易受流场影响。蜗壳最大磨损量与颗粒直径呈负相关关系，当颗粒直径较小时，磨损区域呈斑状分布；随着颗粒直径的增加，颗粒磨损主要分布在蜗壳流道及隔舌进口侧。颗粒直径对叶片最大磨损量影响较小，颗粒磨损主要分布在叶片压力面。
When conveying solid-liquid two-phase slurry, the overflow components of the slurry pump will wear due to the impact of solid particles, and the mass concentration and particle size of the particles will have a significant impact on the degree of wear. Coarse particle working conditions often lead to significant wear on the flow components of the slurry pump, so it is important to explore the wear patterns of the slurry pump under coarse particle working conditions. This article establishes a simulation model for solid-liquid two-phase flow in a slurry pump, and analyzes the changes in the internal flow field and particle motion of the slurry pump under coarse particle conditions(three particle diameters). Based on the wear model, the wear patterns of different flow passage components of the slurry pump were analyzed. The results indicate that under coarse particle conditions, particles are mainly distributed in the volute flow channel and blade pressure surface. When the particle diameter is 1 mm, the particle distribution is more dispersed and more susceptible to the influence of the flow field. The maximum wear of the volute is negatively correlated with the particle diameter. When the particle diameter is small, the wear area shows a patchy distribution. As the particle diameter increases, particle wear is mainly distributed in the volute flow channel and the inlet side of the tongue. The particle diameter has little effect on the maximum wear of the blade, and particle wear is mainly distributed on the pressure surface of the blade.

关键词(KeyWords)： 粗颗粒;渣浆泵;过流件;磨损
coarse particle;slurry pump;flow passage;wear

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 郭建军
GUO Jianjun

DOI: 10.13226/j.issn.1006-6772.24081402

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