大型斜流泵模型泵装置水力性能的研究

发布时间：2018-01-01 04:19

本文关键词：大型斜流泵模型泵装置水力性能的研究　出处：《流体机械》2016年10期 　论文类型：期刊论文

【摘要】：为了探讨斜流泵段与泵装置水力损失及空蚀试验的异同点,以河海大学多功能水力试验台为基础,通过试验测量和计算,对比分析斜流泵段和斜流泵装置的水力损失及有效空蚀余量。结果表明:斜流泵段在叶片安装角度较小时,其水力损失由叶片表面摩擦损失和出口混合损失决定,而当叶片安装角度增大时,其水力损失由进口撞击损失决定;泵装置较泵段水力损失变化稳定但变化幅度较大;斜流泵装置与泵段在设计扬程附近有效空蚀余量随叶片安装角度增大而增大,但在偏离设计工况时数据变化无明显规律,且斜流泵装置与泵段比较有效空蚀余量总体偏小。
[Abstract]:In order to investigate the oblique flow pump and pump device of hydraulic loss and test the similarities and differences in Hohai University multi-function hydraulic test bench as the foundation, through the measurement and calculation of test, comparison and analysis of the hydraulic loss of oblique flow pump and oblique flow pump device and effective cavitation margin. The results show that the oblique flow pump installation angle low in leaves, the hydraulic loss is determined by the blade surface friction loss and mixing loss at the exit, and when the blade installation angle increases, the hydraulic loss is determined by the import impact loss; a pump device pumps hydraulic loss change stable but changed greatly; and the pump device in the design of oblique flow pump head near effective cavitation margin with the blade installation angle increases, but no obvious rules of data change in off design conditions, and the device and the pump section oblique flow pump effective cavitation allowance is overall small.

【作者单位】：河海大学水利水电学院;河海大学文天学院;
【基金】：国家自然科学基金面上项目(51579080) 安徽省自然科学基金(1608085ME119) 中央校基本科研业务费专项资金(2015B34314)
【分类号】：TH313
【正文快照】： 1前言斜流泵作为近年来研究的热点,具有离心泵和轴流泵的双重优点[1~3],不仅体积小,而且易于启动且自身工作效率高。如李伟博士通过二元理论设计了斜流泵模型并进行优化与研究,证明其拥有良好的稳态性能[4]。但仇宝云、A H Arab等指出,经优化后的泵段处于效率达到最优时,泵装

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