干气密封气膜-密封环系统角向摆动的失稳分析

韩明君; 李有堂; 朱丽; 丁雪兴; 俞树荣

干气密封气膜-密封环系统角向摆动的失稳分析

1 兰州理工大学理学院, 兰州 730050;
2 兰州理工大学机电工程学院, 兰州 730050;
3 兰州理工大学石油化工学院, 兰州 730050

基金项目:

国家自然科学基金资助项目(50965010).

详细信息

作者简介:
韩明君(1975—),男,副教授,主要从事结构非线性力学行为、流体动密封方面的研究,E-mail:hanmj@lut.cn.

中图分类号: S277.9;TQ051.1
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- 文章访问数: 13
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出版历程
- 收稿日期: 2011-03-16
- 网络出版日期: 2022-12-02

Instability Analysis of Angular Wobbly for Gas Film and Seal Ring in the System of Dry Gas Seal

1 School of Science, Lanzhou University of Technology, Lanzhou 730050, China;
2 School of Mechanical Electronic Engineering, Lanzhou University of Technology, Lanzhou 730050, China;
3 School of Petrochemical Engineering,Lanzhou University of Technology, Lanzhou 730050, China

摘要

摘要: 建立了角向振动下气膜-密封环系统的动力学模型,应用微扰法和龙格-库塔法求解气膜角向刚度、临界转动惯量和角向摆动的二维振动方程,获得了密封系统失稳时的密封结构参数,分析了临界转动惯量与螺旋角之间的定量关系及失稳点振动的非线性动力学行为,并对模拟结果进行了试验验证.研究结果表明:在静态优化出的螺旋角范围(60°~80°)内,存在着失稳点域,特例中发现有16处,并且在变工况(不同的介质压力、转速)下,虽其振幅发生了变化,但其失稳点的螺旋角数值不变,这与试验结果相吻合.
- 干气密封 /
- 角向摆动 /
- 非线性 /
- 龙格-库塔法 /
- 混沌运动
Abstract: The dynamic model of the angular wobbly of the gas film and seal rings was established,and the gas film angular rigidity,critical moment of inertia and the angular wobbly two-dimensional vibration equations was solved by using the perturbation method and the Runge-Kutta method,then the seal structure instability parameters were obtained,quantitative relation of critical moment of inertia and the angle and the nonlinear dynamic behavior of the vibration was analyzed.The simulation results was verified by testing.The results show that there are instability point-fields in the spiral angle range(usually 60°-80°) of the static optimization,and 16 points in the special case are found and the amplitude will be changed but the spiral angle on the instability point-fields will not be changed under the variable conditions(medium pressure and speed is changed),and the results coincide well with experimental results.
- dry gas seal /
- angular wobbly /
- nonlinear /
- method of the Runge-Kutta /
- chaotic motion

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参考文献(13)

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干气密封气膜-密封环系统角向摆动的失稳分析

作者简介: 韩明君(1975—),男,副教授,主要从事结构非线性力学行为、流体动密封方面的研究,E-mail:hanmj@lut.cn.

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出版历程

Instability Analysis of Angular Wobbly for Gas Film and Seal Ring in the System of Dry Gas Seal

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出版历程

目录

作者简介:
韩明君(1975—),男,副教授,主要从事结构非线性力学行为、流体动密封方面的研究,E-mail:hanmj@lut.cn.