Optimization Design and Internal Flow Field Study of Open-Design Vortex Pump
Optimization Design and Internal Flow Field Study of Open-Design Vortex Pump
复制标题
开式涡流泵的优化设计及内部流场研究
DOI：
10.1155/2021/6673200
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发表时间：
2021-03-18
影响因子：
1.6
通讯作者：
Wang, Hongfei
中科院分区：
文献类型：
--
作者：
Gao, Xiongfa;Shi, Weidong;Wang, Hongfei
为了确定主要结构参数对开式旋涡泵性能的影响，优化旋涡泵性能，降低运行振动，提高稳定性，本文引入了正交试验方法。选取的主要因素包括叶轮外径（D2）、叶轮出口宽度（b2）、叶轮出口设置角（β2）和叶轮进口设置角（β1），并根据正交表对9种叶轮进行编码。通过极差分析得到各因素的初步最优取值范围后，通过正交试验进行综合分析，研究影响旋涡泵性能的主要因素，确定影响旋涡泵性能的主次影响因素。为进一步设计提供了优化方案。结果表明，优化方案泵的数值计算结果与试验结果吻合较好，表明了数值计算方法的可行性。试验结果表明，优化模型的效率和扬程分别比原型模型高4.2%和9 m。提高了效率，扬程达到设计要求。通过正交试验证明了涡旋泵性能优化的可行性。回流发生在泵入口处，与叶轮同向旋转。它沿着管壁从侧腔移动到进气道，并与接近的气流汇合。
To determine the influences of the main structural parameters on open-design vortex pump performance, optimize the vortex pump performance, and reduce the running vibration and improve stability, orthogonal testing method was introduced in this paper. The selected main factors included impeller outer diameter (D2), impeller outlet width (b2), outlet setting angle of impeller (β2), and inlet setting angle of impeller (β1), and the nine types of impellers were coded according to orthogonal table. After obtaining the preliminarily optimum value range for each factor through range analysis, comprehensive analysis was employed based on the orthogonal test to investigate the main factors and identify the primary and secondary influencing factors affecting the performance of the vortex pump. An optimization scheme was obtained for further design. The results show that the numerical calculation results of the optimization scheme pump are in good agreement with the test results, and it shows the feasibility of the numerical calculation method. The testing results showed that efficiency and head of the optimal model were 4.2% and 9 m higher than those of the prototype model, respectively. Improved efficiency and head met the design requirements. The orthogonal testing method proved the feasibility of performance optimization of the vortex pump. The backflow occurs at the pump entrance and rotates in the same direction with impeller. It moves along the pipe wall from the lateral cavity to the inlet and encourters with the approaching flow.