| 王岩， 邵春雷*.不同空化状态下离心泵内颗粒磨损机理研究[J].轻工机械,2025,43(5):18-28 |
| 不同空化状态下离心泵内颗粒磨损机理研究 |
| Mechanisms of Particle Wear in Centrifugal Pumps under Various Cavitation Regimes |
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| DOI：10.3969/j.issn.1005 2895.2025.05.003 |
| 中文关键词: 离心泵 磨损特性 泥沙磨损 离散相模型：Oka磨损模型 |
| 英文关键词:centrifugal pump wear characteristic particle wear DPM（Discrete Phase Model） Oka wear model |
| 基金项目:国家自然科学基金（51306087）；江苏省自然科学基金（BK20191361）；江苏省研究生科研与实践创新计划项目（SJCX21_0493）。 |
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| 中文摘要: |
| 为了研究离心泵空化过程中的磨损特性，课题组以IS 80 50 250型离心泵为研究对象，采用离散相模型（Discrete Phase Model，DPM)、Schnerr Sauer空化模型和Oka磨损模型对含沙水条件下离心泵内不同空化状态下的磨损状态进行模拟，分析了空化状态、固体颗粒直径和颗粒密度对离心泵性能和磨损的影响规律。结果表明：随着空化程度的加剧，离心泵内各部件的磨损变化具有一致性，呈现出先增大后减小的变化趋势；同时当固体颗粒直径小于0.03 mm时，固体颗粒会促进空化的形成，当固体颗粒直径为0.05~0.07 mm时，固体颗粒会抑制空化的形成，但是磨损情况会随着颗粒直径的增大而增大；固体颗粒密度的改变会改变泵内湍流状态，从而影响泵内流场的分布，颗粒密度越大，离心泵内各部件磨损越严重。研究结果可为离心泵磨损的研究提供参考。 |
| 英文摘要: |
| In order to investigate the wear characteristics of centrifugal pumps during cavitation，the IS 80 50 250 centrifugal pump was took as the research object. Numerical simulations were conducted using the Discrete Phase Model（DPM）,the Schnerr Sauer cavitation model, and the Oka wear model to analyze erosion patterns under low concentration sand laden water conditions under various cavitation states. The effects of cavitation regimes, particle size, and particle density on cavitation dynamics and wear behavior were systematically evaluated. The results indicate that with the intensification of cavitation, the wear of various components in the centrifugal pump are consistent, showing a trend of first increasing and then decreasing; At the same time, when the diameter of solid particles is less than 0.03 mm, solid particles promote the formation of cavitation. When the diameter of solid particles is 0.05 to 0.07 mm, solid particles will inhibit the formation of cavitation, but the wear will increase with the increase of particle diameter; The change in solid particle density will alter the turbulent state in the pump, thereby affecting the distribution of the flow field inside the pump. The higher the particle density, the more severe the wear of various components inside the centrifugal pump.The research results can provide reference for the study of centrifugal pump wear. |
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