| Cite this article: | 巫纾予,缴锡云,郭维华,等.含沙量对输水管网淤塞及水泵选型的影响[J].灌溉排水学报,0,():-. |
| Wu Shu-yu,Jiao Xi-yun,Guo Wei-hua,et al.含沙量对输水管网淤塞及水泵选型的影响[J].灌溉排水学报,0,():-. |
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| Effect of Sand Concentration on Silting in Water Transfer Network and Pump Selection |
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Wu Shu-yu1,2,3,2, Jiao Xi-yun1,3,2, Guo Wei-hua3, Li jiang3, Yao zhen4
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1.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Hohai University;2.China;3.College of Agricultural Science and Engineering;4.Geological Engineering Survey Institute,PowerChina Kunming Engineering Corporation Limited
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| Abstract: |
| Abstract:【Objective】The characteristics of pipeline sedimentation and pump selection under different sand concentration have been analyzed in this paper..【Method】The rule of pipeline hydraulic loss is obtained by analyzing the characteristics of sedimentation under the laboratory test and empirical model. Additionally, the selection of pumps with different sediment concentrations was discussed.【Result】when the sand concentration was 3.24 ~ 114.02 kg/m3, the section curtail rate from 1.06 to 2.30%, and the increase of hydraulic loss from 0.56 to 19.65%. Influenced by pipe silting on pipe performance and influence of sediment content on pump performance, the selection scheme of clean water pump will lead to offset of actual operating point, and the pump efficiency of C3 ~C6 (60.86 ~114.02 kg/m3) will be reduced by 11.95 ~21.03%. Considered the influence of pipeline congestion on pipeline performance and the influence of sand content on pump performance，a scheme for selection of muddy water pump was proposed to improve the working point efficiency by 4.20 ~ 6.23%.【Conclusion】The sediment content of water source has a more significant impact on the selection of pump in pipeline irrigation system. The selection of pump based on the relationship between the deposition law of pipe network and the performance of muddy water pump can better meet the operation requirements of pipeline irrigation system under high sand concentration. |
| Key words: sand concentration ; pipeline ; sedimentation ; pump-selection |
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