单、双隔舌对离心泵径向力特性及内部流场的影响

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振动与冲击 ›› 2016, Vol. 35 ›› Issue (11) : 116-122.

论文

牟介刚，刘剑，谷云庆，代东顺，郑水华，马艺

作者信息 +

Radial hydraulic force characteristics and internal flow field analysis in centrifugal pump based on double-tongue

MOU Jie-gang LIU Jian GU Yun-qing DAI Dong-shun ZHENG Shui-hua MA Yi

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文章历史 +

摘要

为了明确不同型式隔舌对离心泵内部流场的影响，利用标准k-ε湍流模型，对不同工况下单隔舌、双隔舌蜗壳离心泵外特性参数进行数值模拟及相关试验，验证双隔舌蜗壳离心泵的可行性，分析不同工况下单隔舌、双隔舌离心泵叶轮与蜗壳处径向力特性，并对蜗壳和叶轮静压分布以及流场的湍动能进行研究。结果表明：采用双隔舌蜗壳并不会对离心泵外特性造成影响；不同工况下，作用在蜗壳上的径向力均远大于叶轮上的径向力，当采用双隔舌时，叶轮处径向力略微减少，而蜗壳处则降低显著；两种隔舌离心泵叶轮内流体流动趋势相当，各处静压分布较为均匀；不同时刻下，采用双隔舌时，其蜗壳内静压分布变化更小，尤其表现在蜗壳扩散段，说明双隔舌蜗壳更利于流体流动。

Abstract

In order to clarify the different tongue influence on the internal flow field of centrifugal pump. Based on k-ε turbulence model, the external characteristics were numerically simulated and tested under different operating conditions, which confirmed double-tongue centrifugal pump was feasible. Radial force characteristics, static pressure distribution and the turbulent kinetic energy on the impeller and volute were analyzed. Results show that:double-tongue have no obvious effect on the external characteristics; Radial hydraulic force on the volute is much larger under different operating conditions; when double-tongue is applied, radial hydraulic force on the impeller decrease slightly, and which reduce significantly on the volute; Tendency of fluid on the impeller are not far-off, and static pressure distribution were uniform for the two tongues; when double-tongue was applied at different times, diversification of static pressure distribution was smaller, especially on the diffuser of volute, which meaned double-tongue was much better for fluid.

导出引用

牟介刚，刘剑，谷云庆，代东顺，郑水华，马艺 . 单、双隔舌对离心泵径向力特性及内部流场的影响[J]. 振动与冲击, 2016, 35(11): 116-122

MOU Jie-gang LIU Jian GU Yun-qing DAI Dong-shun ZHENG Shui-hua MA Yi. Radial hydraulic force characteristics and internal flow field analysis in centrifugal pump based on double-tongue[J]. Journal of Vibration and Shock, 2016, 35(11): 116-122

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