不同叶片包角的斜流泵水力特性多维度研究

发布时间：2018-06-03 19:11

本文选题：叶片包角 + 水力特性　；参考：《人民长江》2017年16期

【摘要】：在保证斜流泵主要几何参数不变的前提下,对叶轮叶片包角为60°,65°,70°,75°和80°的斜流泵模型进行了数值模拟计算,分析了叶片包角变化对斜流泵水力特性及叶轮和空间导叶流场的影响。分析结果表明:叶片包角的改变对叶轮流道及空间导叶流道流场都会产生较大的影响;随着叶片包角(60°~70°)的增大,叶片流道扩散降低,叶片包角表面的脱流现象会得到较好的抑制,回流漩涡明显减少,叶片流道的流动较为顺畅;随着叶片包角的进一步增加,叶轮流道内的摩擦阻力也随之增大,并逐渐占据主要影响因子,说明斜流泵存在着一个最佳叶片包角值。研究结果可为斜流泵叶片包角的选择提供重要的参考。
[Abstract]:On the premise of keeping the main geometric parameters of the oblique flow pump unchanged, the oblique flow pump model with 60 掳/ 65 掳/ 70 掳/ 75 掳and 80 掳impeller vane enveloping angle is numerically simulated, and the influence of the blade angle change on the hydraulic characteristics of the oblique flow pump and the flow field of impeller and space guide vane is analyzed. The results show that the flow field of the impeller passage and the space guide vane channel will be greatly affected by the change of the blade angle, and the blade channel diffusion decreases with the increase of the blade envelope angle (60 掳~ 70 掳). The phenomenon of defluxing on the surface of the blade envelope angle will be better restrained, the swirl of backflow will be reduced obviously, the flow of the blade passage will be smooth, and the friction resistance in the impeller passage will increase with the further increase of the angle of the blade. And gradually occupied the main factors, indicating that the oblique flow pump has an optimal vane angle value. The results can provide an important reference for the selection of blade angle of oblique flow pump.
【作者单位】：西华大学能源与动力工程学院;
【基金】：四川省科技厅项目(2016JY0187) 四川省教育厅重大培育项目(14CZ0013) 西华大学2016年研究生创新基金(ycjj2016098)
【分类号】：TH38

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