可变形磨损模型下微型离心泵复合磨损研究

王田田; 李俊宏; 南玲博; 陈帝伊; 曹东亮; 韩伟

可变形磨损模型下微型离心泵复合磨损研究

1. 西北农林科技大学水利与建筑工程学院;
2. 中山大学航空航天学院;
3. 海尔集团;
4. 兰州理工大学能源与动力工程学院

基金项目:

国家自然科学基金重点项目(52339006)

详细信息

作者简介:
王田田(1996—),男,博士生,主要从事水动力学及水力机械研究,E-mail:Tiantian7921@163.com

通讯作者:
陈帝伊(1982—),男,教授,博士生导师,主要从事水电站及泵站工程研究,E-mail:diyichen@nwafu.edu.cn

中图分类号: TH311;TH117.1
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出版历程
- 收稿日期: 2023-08-22
- 刊出日期: 2024-04-24

Complex Wear of Micro Centrifugal Pump under Deformable Wear Model

1. College of Water Resources and Architectural Engineering, Northwest A&F University;
2. School of Aeronautics and Astronautics, Sun Yat-sen University;
3. Haier Group;
4. School of Energy and Power Engineering, Lanzhou University of Technology

摘要

摘要: 为了探究微型离心泵在不同颗粒体积分数下的复合磨损类型与磨损变化，基于计算流体动力学与离散元耦合的方法，通过可变形磨料磨损Archard模型与可变形冲蚀磨损Oka模型对离心泵在不同颗粒体积分数(2%、4%、6%、8%、10%、12%)下的颗粒-部件碰撞占比率、磨损分布与演化进行了研究。通过对比实验发现颗粒体积分数在4%附近时颗粒与叶轮叶片、蜗壳碰撞占比率呈现不同的变化趋势。离心泵磨损以磨料磨损为主，磨料磨损中蜗壳为磨损最严重的部件，占总磨料磨损量的68.5%,随着颗粒体积分数的增加，蜗壳处磨料磨损由断面Ⅷ向断面Ⅰ演化，蜗壳前后端先后磨损。冲蚀磨损高磨损区域主要集中于叶轮叶片，占冲蚀磨损总量的95.83%,蜗壳处冲蚀磨损断面演化规律与磨料磨损变化规律近似，但蜗壳后端最先被磨损。颗粒体积分数对蜗壳磨料磨损变形量影响较大，蜗壳、叶轮磨料磨损变形量与冲蚀磨损变形量具有相似的变化趋势。
- 微型离心泵 /
- 磨料磨损 /
- 冲蚀磨损 /
- 可变形磨损 /
- 颗粒体积分数 /
- CFD-DEM
Abstract: Micro centrifugal pump has a wide range of applications in the field of medical and chemical sewage treatment, but it often faces the problem of wear in use. In order to explore the compound wear type and wear change of micro centrifugal pump under different particle volume fractions, based on the method of computational fluid dynamics and discrete element coupling, and the deformable abrasive wear Archard model and the deformable erosion wear Oka model, the particle-component collision ratio, wear distribution and evolution of centrifugal pumps under different particle volume fractions（2%, 4%, 6%, 8%, 10%, 12%） were studied. The results showed that when the particle volume fraction was near 4%, the impact ratio between impeller blade and volute showed different trends. The wear in centrifugal pump was mainly abrasive wear, and the parts with the most serious wear in the abrasive wear accounted for 68.5% of the total abrasive wear. With the increase of particle volume fraction, the abrasive wear at the volute changed from section Ⅷ to section Ⅰ, and the front and back ends of the volute wear successively. The high wear area of erosion wear was mainly concentrated in the impeller blade, accounting for 95.83% of the total erosion wear. The evolution law of erosion wear section at the volute was similar to the change law of abrasive wear, but the back end of the volute was worn first. The particle volume fraction had more influence on the abrasive wear deformation of volute, and the abrasive wear deformation of volute and impeller had a similar change trend to the erosion wear deformation.
- micro centrifugal pump /
- abrasive wear /
- erosion wear /
- deformable wear /
- particle volume fraction /
- CFD-DEM

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