Study of the sealing performance of a high-speed deep groove mechanical seal thermodynamic lubrication model

IF 1.5 4区工程技术 Q3 ENGINEERING, MECHANICAL Industrial Lubrication and Tribology Pub Date : 2024-08-14 DOI:10.1108/ilt-05-2024-0184

Weizheng Zhang, Dongmin Han

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Abstract

Purpose

The purpose of this study is to investigate the sealing performance of different deep groove mechanical seals by considering the changing law of dynamic pressure effect and temperature gradient caused by high speed and high pressure.

Design/methodology/approach

A thermohydrodynamic lubrication model (THD) of the mechanical seal was constructed and solved using the commercial software FLUENT. The pressure and temperature distributions of the fluid under different groove types, as well as the sealing performance under different pressures, rotational speeds and sealing gaps, are obtained.

Findings

The annular groove (AG) can effectively reduce the temperature, and the T-type spiral groove (STG) can effectively inhibit the leakage. The increase of pressure and rotational speed leads to the enhancement of dynamic pressure effect and the increase of leakage, while the sealing gap increases and the leakage increases while taking away more heat. The choice of groove type is very important to the impact of sealing performance.

Originality/value

In consideration of the beneficial effect of deep grooves on cooling performance, the viscous temperature equation and the impact of the thermodynamic lubrication model are evaluated in conjunction with the sealing performance of four distinct groove types. This approach provides a theoretical basis for the optimal design of mechanical seals.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-05-2024-0184/

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高速深槽机械密封热力学润滑模型的密封性能研究

目的本研究的目的是通过考虑高速和高压引起的动压效应和温度梯度的变化规律，研究不同深槽机械密封的密封性能。设计/方法/途径利用商业软件 FLUENT 建立并求解了机械密封的热流体动力润滑模型（THD）。结果环形槽（AG）能有效降低温度，T 型螺旋槽（STG）能有效抑制泄漏。压力和转速的增加会导致动压效应的增强和泄漏量的增加，而密封间隙的增加和泄漏量的增加则会带走更多的热量。沟槽类型的选择对密封性能的影响非常重要。原创性/价值考虑到深沟对冷却性能的有利影响，结合四种不同沟槽类型的密封性能，对粘性温度方程和热力学润滑模型的影响进行了评估。这种方法为机械密封的优化设计提供了理论依据。同行评议本文的同行评议记录可在以下网址查阅：https://publons.com/publon/10.1108/ILT-05-2024-0184/。

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来源期刊

Industrial Lubrication and Tribology 工程技术-工程：机械

CiteScore

3.00

自引率

18.80%

发文量

129

审稿时长

1.9 months

期刊介绍： Industrial Lubrication and Tribology provides a broad coverage of the materials and techniques employed in tribology. It contains a firm technical news element which brings together and promotes best practice in the three disciplines of tribology, which comprise lubrication, wear and friction. ILT also follows the progress of research into advanced lubricants, bearings, seals, gears and related machinery parts, as well as materials selection. A double-blind peer review process involving the editor and other subject experts ensures the content''s validity and relevance.