| Cite this article: | 侯新月,汤玲迪,李浩,等.卷盘式喷灌机用斜击式和切击式水涡轮外特性试验与对比分析[J].灌溉排水学报,2019,(8):-. |
| Hou Xinyue,Tang Lingdi,Li Hao,et al.卷盘式喷灌机用斜击式和切击式水涡轮外特性试验与对比分析[J].灌溉排水学报,2019,(8):-. |
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| Experimental and Comparative Analysis on the Hydraulic Performance of Inclined-jet and Tangential Water Turbines for Hose Reel Irrigators |
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Hou Xinyue1, Tang Lingdi2, Li Hao3, Lang Jingbo1, Qiu Zhipeng4
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1.Heilongjiang Province Hydraulic Research Institute;2.National Research Center of Pumps，Jiangsu University;3.Farmland Irrigation Research Institute, Chinese Academy of Agricultural Sciences;4.Jiangsu Huayuan Water-saving Co., LTD.
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| Abstract: |
| 【Objective】In order to grasp the hydraulic characteristics of the existing water turbines for hose reel irrigators in China including inclined-jet type and tangential type, the water turbine hydraulic characteristic test device is built. 【Method】The hydraulic characteristic data of flow rate, inlet pressure, outlet pressure, torque and rotational speed of the two water turbines at a certain speed were tested, and flow-head, flow-power and flow-efficiency characteristic curves for two water turbines were obtained. In addition, the rotational speed characteristics of the two water turbines under a certain head, namely the rotational speed-efficiency and the rotational speed-power curves can be calculated. 【Result】The test data shows that the optimal operating rotational speed of the inclined-jet water turbine is about 300r/min, the highest efficiency is only 13.8%, while the optimal operating speed of the tangential water turbine is about 600r/min, and the efficiency is 33.7%. Further comparative analysis shows that compared with the performance of the inclined-jet water turbine, the shaft power of the tangential water turbine increased 34.3%, the operating flow rate decreased about 29.7%, and the efficiency increased 19.9 percentage points, when two water turbines operating at the most efficient work point. 【Conclusion】Therefore, the overall performance of the tangential water turbine is better than that of the inclined-jet water turbine, which provides reference data for further improving the performance of the water turbine of the hose reel irrigator. |
| Key words: hose reel irrigator; inclined-jet water turbine; tangential water turbine; hydraulic performance |
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