螺旋槽结构参数对新型混合式螺旋槽气体止推箔片轴承静态特性影响的理论分析

doi:10.3901/JME.2025.09.358

机械工程学报 ›› 2025, Vol. 61 ›› Issue (9): 358-371.doi: 10.3901/JME.2025.09.358

• 机械动力学 • 上一篇

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螺旋槽结构参数对新型混合式螺旋槽气体止推箔片轴承静态特性影响的理论分析

栾雯霖¹, 王园丁^2,3, 王浩明^2,3, 刘艳¹, 李祥龙⁴, 徐方程⁵

1. 大连理工大学能源与动力学院大连 116024;
2. 上海空间推进研究所上海 201112;
3. 上海空间发动机工程技术研究中心上海 201112;
4. 大连理工大学船舶工程学院大连 116024;
5. 大连理工大学控制科学与工程学院大连 116024

收稿日期:2024-05-22 修回日期:2024-10-28 发布日期:2025-06-12
通讯作者: 徐方程,男,1985年出生,副教授。主要研究方向为气体箔片轴承、箔片密封、挤压油膜阻尼器及转子动力学。E-mail:fcxu@dlut.edu.cn E-mail:fcxu@dlut.edu.cn
作者简介:栾雯霖,男,1997年出生。主要研究方向为气体箔片轴承,转子动力学。E-mail:13840867155@mail.dlut.edu.cn
基金资助:
某部委重大专项(2023KGW·YY4007Tm)、航空发动机及燃气轮机重大专项(J2019-IV-0021)和中央高校基本科研业务费专项资金(DUT22YG112，DUT24GF111)资助项目。

Theoretical Analysis on the Impact of Spiral Groove Structural Parameters on Static Characteristics of Novel Hybrid Gas Foil Thrust Bearing with Spiral Grooves

LUAN Wenlin¹, WANG Yuanding^2,3, WANG Haoming^2,3, LIU Yan¹, LI Xianglong⁴, XU Fangcheng⁵

1. School of Energy and Power Engineering, Dalian University of Technology, Dalian 116024;
2. Shanghai Institute of Space Propulsion, Shanghai 201112;
3. Shanghai Engineering Research Center of Space Engine, Shanghai 201112;
4. School of Naval Architecture, Dalian University of Technology, Dalian 116024;
5. School of Control Science and Engineering, Dalian University of Technology, Dalian 116024

Received:2024-05-22 Revised:2024-10-28 Published:2025-06-12

摘要/Abstract

摘要： 目前，气体箔片轴承的承载能力不足，限制了其在高功率和高载荷涡轮机械领域的应用。为了提高承载能力，提出了一种新型的混合式气体止推箔片轴承，其顶层箔片表面具有螺旋槽，保留了气体止推箔片轴承简单结构的优点，并将顶层箔片表面的螺旋槽作为轴承的辅助增压机制，使其在楔形动压效应的基础上，利用螺旋槽的泵压效应和周向阶梯效应进一步提高轴承的承载能力。建立了无槽气体止推箔片轴承和螺旋槽气体止推箔片轴承的物理模型。采用有限差分法，耦合求解雷诺方程、考虑螺旋槽的气膜厚度方程和箔片变形方程，得到了无槽气体止推箔片轴承(GFTB)和螺旋槽气体止推箔片轴承(GFSFTB)的静态特性。此外，研究了螺旋槽结构参数(槽位置、槽数、槽深、槽宽比、槽长比和螺旋角)以及楔形入口高度对螺旋槽气体止推箔片轴承的摩擦力矩、承载能力和极限承载能力的影响，并获得最佳螺旋槽结构参数。该研究内容主要针对轴承的静态特性。仿真结果表明，GFSFTB的承载能力和轴承刚度显著优于传统的无槽气体止推箔片轴承。因此，所提出了一种用于气体止推箔片轴承性能优化的可行方法，并拓展了箔片轴承的应用前景。

关键词: 螺旋槽气体止推箔片轴承, 仿真, 承载力, 摩擦力矩, 螺旋槽结构参数

Abstract: Currently, the insufficient bearing load capacity of gas foil thrust bearings limits their application in the field of high-power and high-load turbomachinery. In order to improve the bearing capacity, a new type of hybrid gas foil thrust bearing with spiral groove on the top foil surface is proposed, which retains the advantages of simple structure of gas foil thrust bearing and uses the spiral groove on the top foil surface as an auxiliary pressurization mechanism of the bearing, so that the bearing load capacity of gas foil thrust bearing can be further improved by using the pumping effect and circumferential ladder effect of the spiral groove on the basis of taper dynamic pressure effect. The physical models of non-groove gas foil thrust bearings and gas foil spiral groove thrust bearings are established. The Reynolds equation, gas film thickness equation considering spiral grooves and foil deformation equation are coupling solved by finite difference method to obtain the static characteristics of the non-groove gas foil thrust bearing and gas foil spiral groove thrust bearing. In addition, the effect of the spiral groove structural parameters: groove position, number of grooves, groove depth, groove width ratio, groove length ratio and spiral angle as well as the taper inlet height on the friction torque, bearing load capacity and ultimate load capacity of the gas foil spiral groove thrust bearing to obtain the optimal spiral groove structural parameters are researched. Simulation results indicate that the load capacity and bearing stiffness of the GFSFTB are significantly superior to those of traditional non-groove gas foil thrust bearings. Therefore, this study proposes a feasible method for performance optimization of gas foil thrust bearings and extends the application prospects of foil bearings.

Key words: gas foil spiral groove thrust bearing, simulation, load capacity, friction torque, groove structural parameters

中图分类号:

V229
TH133

栾雯霖, 王园丁, 王浩明, 刘艳, 李祥龙, 徐方程. 螺旋槽结构参数对新型混合式螺旋槽气体止推箔片轴承静态特性影响的理论分析[J]. 机械工程学报, 2025, 61(9): 358-371.

LUAN Wenlin, WANG Yuanding, WANG Haoming, LIU Yan, LI Xianglong, XU Fangcheng. Theoretical Analysis on the Impact of Spiral Groove Structural Parameters on Static Characteristics of Novel Hybrid Gas Foil Thrust Bearing with Spiral Grooves[J]. Journal of Mechanical Engineering, 2025, 61(9): 358-371.

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螺旋槽结构参数对新型混合式螺旋槽气体止推箔片轴承静态特性影响的理论分析

Theoretical Analysis on the Impact of Spiral Groove Structural Parameters on Static Characteristics of Novel Hybrid Gas Foil Thrust Bearing with Spiral Grooves

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