| 离心式消防泵性能影响因素及内流场分析 |
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| 引用本文： | 张德胜,施卫东,陆伟刚,曹卫东.离心式消防泵性能影响因素及内流场分析[J].排灌机械,2008,26(1):10-14. |
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| 作者姓名： | 张德胜 施卫东 陆伟刚 曹卫东 |
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| 作者单位： | 江苏大学,流体机械工程技术研究中心,江苏,镇江,212013 |
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| 基金项目： | 江苏省333高层次人才培养工程培养基金
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江苏省六大人才高峰基金 |
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| 摘 要： | 采用SIMPLEC算法及标准k-ε湍流模型,把消防泵叶轮和泵体作为一个整体,在全扬程范围内对10种不同设计方案下的扬程、功率和效率进行了数值计算.结合外特性预测结果、内部静压、流线和湍动能分布,讨论了低比转速消防泵性能影响因素,得出以下结论：叶片出口角和叶片数对扬程和驼峰的影响较明显,增加分流叶片后,扬程提高明显;增加合理布置的分流叶片可以提高泵的扬程和效率,改善叶轮内部流动和湍动能分布;泵体的喉部面积对性能影响非常敏感,其可以有效控制高效区范围和最高效率.
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| 关 键 词： | 消防泵 分流叶片 喉部面积 内流场 湍动能 |
| 文章编号： | 1005-6254（2008）01-0010-05 |
| 收稿时间： | 2007-01-10 |
| 修稿时间： | 2007年1月10日 |
Hydraulic influence factors and inner flow analysis of centrifugal fire pump |
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| ZHANG De-sheng,SHI Wei-dong,LU Wei-gang,CAO Wei-dong.Hydraulic influence factors and inner flow analysis of centrifugal fire pump[J].Drainage and Irrigation Machinery,2008,26(1):10-14. |
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| Authors: | ZHANG De-sheng SHI Wei-dong LU Wei-gang CAO Wei-dong |
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| Institution: | (Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China) |
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| Abstract: | Ten fire pumps with different designs were simulated by SIMPLEC method and standard model. The static pressure, turbulent kinetic energy, streamlines distributions and external performance were analyzed and compared. The results showed as follows. （ 1 ） Blade angle of outlet is very sensitive to the pump head and hump; the head increases quickly after appending blades or splitting blades; （2） Splitter blades with good inner flow and turbulent kinetic energy distribution could improve the performance of pump, such as efficiency, head and so on ; （ 3 ） The influence on the performance of low specific speed fire pump acted by throat area is sensitive; it has benefit to expand the range of the high efficiency and increase the maximum efficiency by increasing pump throat area. |
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| Keywords: | fire pump splitter blade throat area inner flow turbulent kinetic energy |
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