| Cite this article: | 胡秋瑾,汤方平,石丽建,等.大型立式轴流泵装置水力模型比选分析[J].灌溉排水学报,0,():-. |
| Hu Qiujin,Tang Fangping,Shi Lijian,et al.大型立式轴流泵装置水力模型比选分析[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Hydraulic Model Comparison Analysis of Large Vertical Axial Flow Pumps |
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Hu Qiujin1, Tang Fangping1, Shi Lijian1, Shang Xiaojun2, Wang Chaofei1, Zhou Ying1
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1.School of water conservancy science and engineering, Yangzhou University;2.Jiangsu Taihu District Water Conservancy Project Management Office
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| Abstract: |
| 【Objective】Selection of vertical axial flow pump is an important content in the research of water pump technology transformation. Reasonable selection method has practical significance for efficient, stable and safe operation of pumping stations. This paper is for study the rationality of the pump selection method. 【Method】Based on the Renault time-averaged NS equation and RNG k-ε turbulence model, the vertical axial flow pump device is used as the research object. The traditional selection method and the method of increasing the flow with equal head are used. The pump device performs numerical calculation of the full flow channel, and the external characteristics of the pump device and the guide vane flow line distribution under different operating conditions are added as a reference index for analyzing the pump selection method. The reliability of the hydraulic model selection is then verified by model tests. 【Results】 The model selected by the traditional selection method has a high head in the high-efficiency zone of the pump device, but considering the loss of the culvert at the back, it can be applied to the pumping station. The selection method of equal head and flow rate is reasonable in the high efficiency area, but the maximum head cannot meet the requirements. The maximum error between the numerical calculation and the results of the model test is less than 5%, and the trend of the overall performance curve is relatively good. The numerical calculation is reasonable and reliable for the simulation of the pump device. 【Conclusion】 The selection method of increasing the flow rate by equal heads can ensure that the highest efficiency point of the axial flow pump is close to the design point. In actual engineering, it is necessary to take into account each characteristic head. |
| Key words: Pump selection; vertical axial pump device; numerical simulation; model test |
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