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An energy consumption improvement method for centrifugal pump based on bionic optimization of blade trailing edge
Energy ( IF 9.0 ) Pub Date : 2022-02-05 , DOI: 10.1016/j.energy.2022.123323
Yanpi Lin 1 , Xiaojun Li 1 , Zuchao zhu 1 , Xunming Wang 2 , Tong Lin 1 , Haibin Cao 1
Affiliation  

The centrifugal pump is one of the most widely used types of power machinery in the water resource utilization and chemical industries. Its energy consumption cost accounts for a large proportion of its total economic cost. In this paper, an energy consumption improvement method for centrifugal pump is proposed by referring to the bionic structure to reduce the energy loss of the centrifugal pump. Four types of impellers with different types of sinusoidal tubercle trailing edges (STTE) are designed. Experiment and numerical simulation are combined to explore the beneficial effects of STTEs. Experimental research shows that this structural change will not affect the performance of the pump. On this basis, the entropy generation rate analysis method was introduced, and the numerical calculation results were analyzed to explore the internal influence of the STTE on the energy loss characteristics of the centrifugal pump. Results show that the use of STTEs can adjust the proportion of energy loss of each component in a centrifugal pump and effectively reduce the overall energy loss. Quantitative research indicated that the STTE3 has the optimal effect of reducing energy consumption. The use of STTE3 can reduce the total energy consumption by more than 5% at all flow rate conditions and reach a peak of 16.95% under 1.2 times nominal flow rate conditions. Thus, the bionic structure optimization method to improve the internal energy loss characteristics of centrifugal pumps will be beneficial and can provide a certain degree of reference for the hydraulic design of centrifugal pumps.



中文翻译:

基于叶片后缘仿生优化的离心泵能耗改进方法

离心泵是水资源利用和化工行业中应用最广泛的一种动力机械。其能源消耗成本占其总经济成本的很大比例。本文借鉴仿生结构,提出了一种离心泵能耗改进方法,以降低离心泵的能量损失。设计了四种具有不同类型正弦结节后缘(STTE)的叶轮。实验和数值模拟相结合,探索 STTE 的有益效果。实验研究表明,这种结构变化不会影响泵的性能。在此基础上,引入熵生成率分析方法,并对数值计算结果进行分析,探讨STTE对离心泵能量损失特性的内在影响。结果表明,STTEs的使用可以调整离心泵各部件的能量损失比例,有效降低整体能量损失。定量研究表明,STTE3具有降低能耗的最佳效果。使用STTE3可以在所有流量条件下将总能耗降低5%以上,在1.2倍标称流量条件下达到16.95%的峰值。因此,采用仿生结构优化方法改善离心泵内能损失特性将是有益的,可为离心泵的水力设计提供一定的参考。

更新日期:2022-02-10
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