基于等效间隙的机匣安装边泄漏量定量计算方法
Quantitative calculation method of the casing flange leakage based on equivalent clearance
艾延廷 1刘俊男 1田晶 1刘玉 1赵丹 2姚玉东1
作者信息
- 1. 沈阳航空航天大学辽宁省航空推进系统先进测试技术重点实验室,沈阳 110136
- 2. 中国航发四川燃气涡轮研究院,成都 610550
- 折叠
摘要
结合平行平板流动理论,结合流量因子法和粗糙面接触压力与接触间隙的关系,提出了一种基于等效间隙、能够考虑微观粗糙形貌及受不均匀分布载荷的机匣安装边泄漏量定量计算方法;采用有限元计算方法,研究了内部气体压力和轴向力对机匣安装边气体泄漏量的影响规律;研究表明,随着内部气体压力的增加,泄漏量增大,随着轴向力的增加,泄漏量略微减小;最后将计算结果与泄漏量实验结果进行对比,在内部气体压力和轴向力作用下的泄漏量最大误差分别为3.5％和3.6％,证明了本文计算方法的有效性.
Abstract
A quantitative calculation method of gas leakage in casing flange considering the rough surface morphology and various distributed loads was proposed by using the parallel plate flow theory,which combined the flow factor method and the relationship between contact pressure and contact gap on the rough surface.The influence of internal gas pressure and axial force on gas leakage in casing flange was studied by finite element method.The results showed that with the increase of internal gas pressure,the leakage increased,and with the increase of axial force,the leakage decreased slightly.Finally,the calculated results were compared with the experimental results of leakage,and the maximum errors of leakage under the action of internal gas pressure and axial force were 3.5％and 3.6％,respectively,which proved the effectiveness of the proposed calculation method.
关键词
机匣安装边/表面粗糙度/流量因子/等效间隙/泄漏量实验Key words
casing flange/roughness/flow factor/equivalent clearance/leakage experiment引用本文复制引用
基金项目
国家自然科学基金(11702177)
辽宁省自然科学基金(2020-BS-174)
辽宁省教育厅项目(JYT2020019)
出版年
2024
NETL
NSTL
万方数据