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| Experimental results on the same test-bed and selection analysis for hydraulic model of axial-flow pump |
| TANG Fang-ping1, XIE Wei-dong2, WU Jie3 |
| 1.Yangzhou University, Yangzhou, Jiangsu 225009, China; 2.Jiangsu Surveying and Design Institute of Water Resources Co., Ltd., Yangzhou, Jiangsu 225009, China; 3.China Water Huaihe Engineering Co., Ltd., Bengbu, Anhui 233001, China |
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Abstract The experimental results on the same test-bed in Tianjin were analyzed.The summarized rules can be used as references for design of pumping station and pump selection.The comparative projects of the axial-flow hydraulic model,which was classified by the main geometry dimension of impeller and the slope of the head-flow rate curve was simplified.The nominal head was presented for preliminary selection of hydraulic models,with consideration of the efficiency and reliability at all operation conditions.Using the method of keeping head and increasing flow rate and referring to the layout and preliminary design of the Eastern Route of South-to-North Water Project based on the nominal head,the higher weighted-average efficiency of the hydraulic model can be ensured.The influences of the installation precision of pump device,the blade thickness and the blade radial tip on the test results were analyzed.
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Received: 08 August 2013
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