液钠混合轴承的流场分析和结构优化

IF 1.8 4区 工程技术 Q3 ENGINEERING, CHEMICAL Lubrication Science Pub Date : 2024-01-02 DOI:10.1002/ls.1684
Fei Song, Xuefeng Yang, Zhiqiang Zhang, Wenlong Dong, Min Wu, Zhiyuan Wang, Yeqi Zhu
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引用次数: 0

摘要

液钠混合轴承是机械泵轴底部的关键支撑部件,即受流体作用发挥平衡叶轮径向力的部件,为提高轴承性能,基于计算模型、仿真分析、结构改进等方面的分析,本文基于流体力学理论对轴承有限元模型进行数值计算和流场分析。在不同偏心率和振动速度下,分析了结构改进对轴承承载能力的影响。结果表明,液钠混合轴承的承载能力主要是静水承载能力,流体动力压力只起辅助作用。改进承载结构后,承载能力提高了 4%-7.3%。当环形槽深度为 0.6 毫米时,泄漏量减少了 27%-38%。
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Flow field analysis and structure optimization of liquid sodium hybrid bearing

Liquid sodium hybrid bearing is mechanical pump shaft bottom key support components, that play a balanced radial force of the impeller by fluid effect, in order to improve the bearing performance, based on the calculation model, simulation analysis, structure improvement and other aspects of analysis, this paper based on the theory of fluid mechanics of bearing finite element model for numerical calculation and analysis of flow field. Under different eccentricities and vibration velocities, the influence of structure improvement on bearing capacity is analysed. The results show that the bearing capacity of the liquid sodium hybrid bearing is mainly the hydrostatic bearing capacity, and the hydrodynamic pressure only plays an auxiliary role. After the improvement of the load-bearing structure, the load-bearing capacity is increased by 4%–7.3%. And the leakage is reduced by 27%–38% when the depth of the annular groove is 0.6 mm.

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来源期刊
Lubrication Science
Lubrication Science ENGINEERING, CHEMICAL-ENGINEERING, MECHANICAL
CiteScore
3.60
自引率
10.50%
发文量
61
审稿时长
6.8 months
期刊介绍: Lubrication Science is devoted to high-quality research which notably advances fundamental and applied aspects of the science and technology related to lubrication. It publishes research articles, short communications and reviews which demonstrate novelty and cutting edge science in the field, aiming to become a key specialised venue for communicating advances in lubrication research and development. Lubrication is a diverse discipline ranging from lubrication concepts in industrial and automotive engineering, solid-state and gas lubrication, micro & nanolubrication phenomena, to lubrication in biological systems. To investigate these areas the scope of the journal encourages fundamental and application-based studies on: Synthesis, chemistry and the broader development of high-performing and environmentally adapted lubricants and additives. State of the art analytical tools and characterisation of lubricants, lubricated surfaces and interfaces. Solid lubricants, self-lubricating coatings and composites, lubricating nanoparticles. Gas lubrication. Extreme-conditions lubrication. Green-lubrication technology and lubricants. Tribochemistry and tribocorrosion of environment- and lubricant-interface interactions. Modelling of lubrication mechanisms and interface phenomena on different scales: from atomic and molecular to mezzo and structural. Modelling hydrodynamic and thin film lubrication. All lubrication related aspects of nanotribology. Surface-lubricant interface interactions and phenomena: wetting, adhesion and adsorption. Bio-lubrication, bio-lubricants and lubricated biological systems. Other novel and cutting-edge aspects of lubrication in all lubrication regimes.
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