Investigation of double-volute balancing in centrifugal pumps

IF 1.9 3区 工程技术 Q3 MECHANICS Meccanica Pub Date : 2024-08-23 DOI:10.1007/s11012-024-01870-7
Ali Kibar, Kadri Suleyman Yigit
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Abstract

This study investigates the effect of radial hydraulic forces on low-specific-speed centrifugal pump bearings and assesses the effectiveness of the double-volute balancing technique in mitigating these forces. Numerical simulations were conducted on centrifugal pumps with both single- and double-volute designs. Experimental validation confirmed the numerical findings, establishing the technique's efficacy. Additionally, while size limitations often restrict the use of double-volutes in small pumps, their potential benefits and encouragement for further exploration are discussed for these applications, highlighting the significance of the double-volute arrangement in designing and operating high-pressure radial-flow centrifugal pumps. The simulations demonstrated a notable decrease in the radial hydraulic forces with the implementation of the double-volute configuration. Consequently, adopting a double-volute centrifugal pump design resulted in a substantial reduction in the impeller-induced forces and forces exerted on the bearings, leading to an approximate 45% decrease in the hydraulic radial forces. This result explains the significant reduction in impeller-induced and bearing forces.

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离心泵双涡流平衡研究
本研究探讨了径向液压力对低速离心泵轴承的影响,并评估了双渐开线平衡技术在减轻这些力方面的效果。对采用单涡旋和双涡旋设计的离心泵进行了数值模拟。实验验证证实了数值结果,确定了该技术的有效性。此外,虽然尺寸限制往往限制了双蜗杆在小型泵中的使用,但讨论了其潜在的好处,并鼓励进一步探索这些应用,强调了双蜗杆布置在设计和操作高压径向流离心泵中的重要性。模拟结果表明,采用双蜗壳结构后,径向水力明显减小。因此,采用双涡流离心泵设计可大幅降低叶轮感应力和施加在轴承上的力,从而使径向液压力降低约 45%。这一结果解释了叶轮感应力和轴承力大幅降低的原因。
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来源期刊
Meccanica
Meccanica 物理-力学
CiteScore
4.70
自引率
3.70%
发文量
151
审稿时长
7 months
期刊介绍: Meccanica focuses on the methodological framework shared by mechanical scientists when addressing theoretical or applied problems. Original papers address various aspects of mechanical and mathematical modeling, of solution, as well as of analysis of system behavior. The journal explores fundamental and applications issues in established areas of mechanics research as well as in emerging fields; contemporary research on general mechanics, solid and structural mechanics, fluid mechanics, and mechanics of machines; interdisciplinary fields between mechanics and other mathematical and engineering sciences; interaction of mechanics with dynamical systems, advanced materials, control and computation; electromechanics; biomechanics. Articles include full length papers; topical overviews; brief notes; discussions and comments on published papers; book reviews; and an international calendar of conferences. Meccanica, the official journal of the Italian Association of Theoretical and Applied Mechanics, was established in 1966.
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