Page 149 - 《摩擦学学报》2021年第5期

第 41 卷 第 5 期 摩 擦 学 学 报 Vol 41 No 5
2021 年 9 月 Tribology Sept, 2021

DOI: 10.16078/j.tribology.2020143

迷宫-蜂窝混合型密封静态稳定性与

泄漏特性研究

3
1
1,2*
1
杨兴辰 , 张万福 , 顾承璟 , 张晓斌 , 李 春 1,2
(1. 上海理工大学 能源与动力工程学院, 上海 200093;
2. 上海市动力工程多相流动与传热重点实验室, 上海 200093;
3. 华北电力科学研究院有限责任公司, 北京 210096)
摘 要: 建立迷宫-蜂窝混合型密封三维数值分析模型，研究密封在阻塞/非阻塞流动状态及不同偏心率下静态稳定
性与泄漏特性，并与传统迷宫密封进行对比分析. 结果表明：两种不同结构型式的密封泄漏量均随偏心率的增大而
增加，但迷宫-蜂窝混合型密封相较于传统迷宫密封有更好的封严性能. 在阻塞与非阻塞状态下，两种密封均表现为
负的静态刚度系数，系统易产生静态失稳现象. 与传统迷宫密封相比，迷宫-蜂窝混合型密封静态刚度系数绝对值较
小，稳定性较高.
关键词: 迷宫-蜂窝混合型密封; 静态稳定性; 泄漏特性; 计算流体力学
中图分类号: TK263 文献标志码: A 文章编号: 1004-0595(2021)05–0738–11

Leakage Performance and Static Stability of Hybrid

Labyrinth-Honeycomb Seals

1 1,2* 1 3 1,2
YANG Xingchen , ZHANG Wanfu , GU Chengjing , ZHANG Xiaobin , LI Chun

(1. School of Energy and Power Engineering, University of Shanghai for Science and Technology,
Shanghai 200093, China
2. Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, Shanghai 200093, China
3. North China Electric Power Research Institute Co Ltd, Beijing 210096, China)
Abstract: A three-dimensional numerical model of the hybrid labyrinth-honeycomb seal was established. The static
stability and leakage characteristics of the hybrid labyrinth-honeycomb seal were investigated and compared to the
traditional labyrinth seal in the choked/unchoked flow condition and different eccentricity. Results showed that the
leakage flow rate of the two kinds of seals increased with the increasing eccentricity, while the hybrid labyrinth-
honeycomb seal showed better leakage performance than the traditional labyrinth seal. The fluid-induced force and static
stiffness coefficient of two kinds of seals in the choked and unchoked condition were negative, which was prone to the
static instability of the system. Compared to the traditional labyrinth seal, the absolute value of the static stiffness
coefficient of the hybrid labyrinth-honeycomb seal was smaller, and hybrid labyrinth-honeycomb seal possessed a
relatively better stability.
Key words: hybrid labyrinth-honeycomb seal; static stability; leakage characteristics; computational fluid dynamics
(CFD)

Received 7 July 2020, revised 14 September 2020, accepted 15 September 2020, available online 28 September 2021.
*Corresponding author. E-mail: wfzhang@usst.edu.cn, Tel: +86-18817882508.
The project was supported by National Natural Science Foundation of China (51875361) and Natural Science Foundation of
Shanghai (20ZR1439200).
国家自然科学基金项目(51875361)和上海市自然科学基金项目(20ZR1439200)资助.