新型浮动式收敛袋型密封自适应同心性能数值与实验研究

doi:10.7527/S1000-6893.2019.23270

材料工程与机械制造

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新型浮动式收敛袋型密封自适应同心性能数值与实验研究

孙丹¹, 王平¹, 赵欢¹, 张国臣¹, 肖忠会², 孟继纲²

1. 沈阳航空航天大学航空发动机学院辽宁省航空推进系统先进测试技术重点实验室, 沈阳 110136;
2. 沈阳鼓风机集团股份有限公司辽宁重大装备制造协同创新中心, 沈阳 110142

收稿日期:2019-07-05 修回日期:2019-11-18 出版日期:2020-03-15 发布日期:2019-11-07
通讯作者: 孙丹 E-mail:phd_sundan@163.com
基金资助:
国家自然科学基金（51675351）；中国博士后科学基金（2018M633572）；辽宁省高等学校创新人才支持计划项目（LR2016033）

Numerical and experimental study on adaptive concentric performance of a new type of floating convergent pocket seal

SUN Dan¹, WANG Ping¹, ZHAO Huan¹, ZHANG Guochen¹, XIAO Zhonghui², MENG Jigang²

1. Key Laboratory of Advanced Measurement and Test Technology for Aviation Propulsion System, Liaoning Province, School of Aero-engine, Shenyang Aerospace University, Shenyang 110136, China;
2. Collaborative Innovation Center of Machine Manufacturing in Liaoning, Shenyang Blower Works Group Company Limited, Shenyang 110142, China

Received:2019-07-05 Revised:2019-11-18 Online:2020-03-15 Published:2019-11-07
Supported by:
National Natural Science Foundation of China(51675351); China Postdoctoral Science Foundation(2018M633572);College Innovation Talent Support Program of Liaoning Province(LR2016033)

摘要/Abstract

摘要： 提出了新型浮动式收敛袋型密封结构，建立了新型收敛袋型密封数值求解模型，研究新型收敛袋型密封周向压力分布规律，分析进出口压比和偏心率对新型收敛袋型密封泄漏量及浮动同心力的影响。设计搭建了浮动式自同心密封实验台，在数值计算结果与实验测试结果相互验证的基础上，研究进出口压比和偏心率对新型浮动式收敛袋型密封泄漏量及自适应同心性能的影响。研究结果表明：在本文研究工况下，新型收敛袋型密封所产生的浮动同心力是传统迷宫密封的8.9~10.9倍。在不同进出口压比和偏心率下，传统浮动式迷宫密封均始终处于初始偏心位置，自适应同心性能较差。新型浮动式收敛袋型密封均向转子轴心方向移动，且随着进出口压比和偏心率的增大，浮动响应时间缩短，自适应同心性能增强。新型浮动式收敛袋型密封具有良好的浮动响应特性和自适应同心性能。

关键词: 浮动式收敛袋型密封, 偏心率, 浮动同心力, 浮动响应特性, 自适应同心性能

Abstract: A new type of floating convergent pocket seal structure is proposed, a numerical solution model of new convergent pocket seal is established, the distribution law of circumferential pressure of new convergent pocket seal is studied, and the influence of import/export pressure ratio and eccentricity on the leakage and floating concentric force of new convergent pocket seal are analyzed. The experimental platform of floating self-concentric seal is designed and constructed. On the basis of the mutual verification of the numerical calculation results and the experimental test results, the influence of import/export pressure ratio and eccentricity on the leakage and adaptive concentric performance of the new floating convergent pocket seal was studied. The results show that, under the working conditions, the floating concentric force of the new convergent pocket seal is 8.9-10.9 times that of the traditional labyrinth seal. Under different import/export pressure ratios and eccentricities, the traditional floating labyrinth seal is always in the initial eccentric position and the adaptive concentric performance is poor. The new floating convergent pocket seal moves in the rotor axis direction, with the increase of import/export pressure ratio and eccentricity, the floating response time is shortened and the adaptive concentric performance is enhanced. The new type of floating convergent pocket seal has good floating response characteristics and adaptive concentric performance.

Key words: floating convergent pocket type seal, eccentricity, floating concentric force, floating response characteristics, adaptive concentric performance

中图分类号:

V233.5

孙丹, 王平, 赵欢, 张国臣, 肖忠会, 孟继纲. 新型浮动式收敛袋型密封自适应同心性能数值与实验研究[J]. 航空学报, 2020, 41(3): 423270-423270.

SUN Dan, WANG Ping, ZHAO Huan, ZHANG Guochen, XIAO Zhonghui, MENG Jigang. Numerical and experimental study on adaptive concentric performance of a new type of floating convergent pocket seal[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(3): 423270-423270.

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主管单位：中国科学技术协会主办单位：中国航空学会北京航空航天大学

新型浮动式收敛袋型密封自适应同心性能数值与实验研究

Numerical and experimental study on adaptive concentric performance of a new type of floating convergent pocket seal

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