力变形下螺旋槽干气密封气膜流场近似计算及分析

苏虹; 丁雪兴; 张海舟; 吴昊; 刘勇

doi:10.6052/j.issn.1000-4750.2012.05.S035

力变形下螺旋槽干气密封气膜流场近似计算及分析

兰州理工大学石油化工学院，甘肃，兰州730050

基金项目: 国家自然科学基金项目(51165020)

详细信息

作者简介:
苏虹(1987―)，女(满族)，辽宁抚顺人，硕士生，主要从事流体动密封和机械振动的研究(E-mail:suh725@163.com)；张海舟(1986―)，男，河南周口人，硕士生，主要从事流体动密封及机械振动的研究(E-mail:haizhou27@163.com)；吴昊(1989―)，男，黑龙江齐齐哈尔人，硕士生，主要从事流体动密封及机械振动的研究(E-mail:haoge1237@163.com)；刘勇(1987―)，男，河南驻马店人，硕士生，主要从事流体动密封及机械振动的研究(E-mail:liuyong7805801@126.com).

通讯作者:
丁雪兴(1964―)，男，江苏苏州人，教授，博士，博导，主要从事流体动密封和机械振动研究(E-mail:dingxx1@163.com).

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出版历程
- 收稿日期: 2013-06-30
- 修回日期: 2013-06-30
- 刊出日期: 2013-06-24

GAS MEMBRANE FLOW FIELD APPROXIMATE CALCULATION AND ANALYSIS OF SPIRAL GROOVE DRY GAS SEAL ON THE FORCE DISTORTION

College of Petrochemical Engineering ,Lanzhou University of Technology,Lanzhou,Gansu 730050,China

摘要

摘要: 基于滑移边界条件下的雷诺方程，不考虑密封环的变形，力平衡的条件下，利用迭代法求解获得密封腔内气膜压力函数式；根据微尺度流体流动过程中压力及转速的变化，得到不同压力下的密封面的转角及变形量的分布规律，获得相应的气膜厚度近似表达式。同时，在广义雷诺方程下，求出无变形时理论泄露量。利用Maple程序求解，得到不同压力下的密封环力变形泄漏量，并与理论值进行比对。研究表明：随气体从外径流入内径，泄漏量随着压力的增大而增大；相同工况下，与无变形泄漏量相比，有变形的泄漏量更接近于实验值，从而对密封性能产生影响。
- 干气密封 /
- 力变形 /
- 泄漏量 /
- 气膜厚度 /
- Maple程序
Abstract: The pressure distributions function is obtained not considering the seal rings’ deformation, based on the Reynolds equation under the slid boundary conditions. Changing with the revolving speeds and pressure of fluid in the spiral groove, the corners and deformations of the sealing surface distributions are solved, and the approximate analytic of the corresponding gas film thickness is obtained. Meanwhile, the theoretical leakage not considering forced deformation is obtained by using the Generalized Reynolds Equation. The Maple software is applied to solve the leakages with the forced deformation in the seal ring. The leakages are calculated out and compared with the theoretical values under different pressures. The result shows that with an increasing of pressure, the leakage is increased alone the radial from the outside to inside. In the same condition, the leakage considering forced deformation is closer to the experimental values, compared with theoretical values. Thus it affects the sealing performance.
- dry gas seal /
- forced deformation /
- leakage /
- gas film thickness /
- Maple program

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参考文献(12)

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[10]	丁雪兴),(陈德林),(张伟政),(俞树荣),(杜兆年). 螺旋槽干气密封微尺度流动场的近似计算及其参数优化[J]. (应用力学学报), 2007,24(3):425―428. Ding Xuexing, Chen Delin, Zhang Weizheng, Yu Shurong, Du Zhaonian. Approximate calculation and parameters optimization for micro-scale flow field in spiral grooved gas seal [J]. Chinese Journal of Applied Mechanics,2007,24(3): 425―428. (in Chinese
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文章访问数: 302
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力变形下螺旋槽干气密封气膜流场近似计算及分析

通讯作者: 丁雪兴(1964―)，男，江苏苏州人，教授，博士，博导，主要从事流体动密封和机械振动研究(E-mail:dingxx1@163.com).

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GAS MEMBRANE FLOW FIELD APPROXIMATE CALCULATION AND ANALYSIS OF SPIRAL GROOVE DRY GAS SEAL ON THE FORCE DISTORTION

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目录

通讯作者:
丁雪兴(1964―)，男，江苏苏州人，教授，博士，博导，主要从事流体动密封和机械振动研究(E-mail:dingxx1@163.com).