Experiment on Leakage Flow Characteristics of Labyrinth Seal

您当前的位置：

首页 >

文章列表页 >

Experiment on Leakage Flow Characteristics of Labyrinth Seal

更新时间：2025-07-09

- Experiment on Leakage Flow Characteristics of Labyrinth Seal
- Vol. 45, Issue 3, Pages: 48-52+64(2011)
- 作者机构：
  
  西安交通大学叶轮机械研究所,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK262
- Online First：10 March 2011，
  
  Published：2011
- 稿件说明：
移动端阅览
Experiment on Leakage Flow Characteristics of Labyrinth Seal[J]. 2011, 45(3): 48-52+64.
DOI：

Experiment on Leakage Flow Characteristics of Labyrinth Seal[J]. 2011, 45(3): 48-52+64. DOI：

摘要

为了研究迷宫密封泄漏特性

设计并搭建了旋转密封试验台

测量了典型迷宫密封在8种压比、5种转速、固定密封间隙下的泄漏量和密封腔室压力.通过数值模拟结果的对比分析

找出了压比、转速对迷宫密封泄漏特性和腔室压力的影响规律.研究结果表明:搭建的旋转密封试验台在迷宫密封泄漏量和密封腔室压力的测量精度上是可靠的; 相比于试验结果

数值计算获得的泄漏量和腔室压力的最大相对误差分别为3.25%、3.6%

表明试验与数值结果吻合良好

数值方法可以较准确地预测迷宫密封的泄漏量和腔室压力; 相同转速下的流量系数随着压比的提高而增大

小压比下的流量系数增加迅速; 相同压比下的转速对流量系数的影响很小

可以忽略; 迷宫密封腔室压力系数沿流动方向逐渐减小

密封腔室结构对压力系数影响很大.

Abstract

A rotating seal test rig with a data acquisition system was designed and established to investigate the leakage behavior of a typical labyrinth seal. The leakage and cavity pressure were measured for the labyrinth seal at eight pressure ratios

four rotational speeds

and a sealing gap. The effects of pressure ratio and rotational speed on the leakage behavior and cavity pressure of the labyrinth seal were examined by experiment and simulation. The results show that the maximum relative deviation of the leakage flow rate and cavity pressure predicted is 3.25% and 3.6%

respectively

compared with the experimental data. The flow coefficient increases with pressure ratio and is more sensitive to the smaller pressure ratio at the same rotational speed. The influence of rotational speed on the flow coefficient is very slight which might be neglected at the same pressure ratio. In addition

the cavity pressure coefficient decreases in the direction of flow and is significantly influenced by the cavity structure.

关键词

Keywords

references

LATTIME S B, STEINETZ B M. Turbine engine clearance control systems: current practices and future directions[J]. Journal of Propulsion and Power, 2004, 20(2): 302-311.

CHUPP R E, HENDRICKS R C, LATTIME S B, et al. Sealing in turbomachinery[J]. Journal of Propulsion and Power, 2006, 22(2): 313-349.

李志刚,李军,丰镇平.迷宫密封泄漏特性影响因素的研究[J].西安交通大学学报, 2010, 44(3): 16-20.

LI Zhigang, LI Jun, FENG Zhenping. Effects of gap pressure ratio and rotational speed on discharge behavior of labyrinth seal[J]. Journal of Xi'an Jiaotong University, 2010, 44(3): 16-20.

ROGER P, VASHIST T K, DAVID C. Rotating seal rig experiments: test result and analysis modeling, GT2006-90957[R]. New York, USA: ASME, 2006.

REGER P, SEAN M, DAVID C, et al. Impact of rotational speed on the discharge characteristic of stepped labyrinth seals, GT2007-28248 [R]. New York, USA: ASME, 2007.

AHMED J, GAMAL M, JOHN M. Labyrinth seal leakage tests: tooth profile, tooth thickness, and eccentricity effects[J]. ASME Journal of Engineering for Gas Turbines and Power, 2008, 130(1): 1-11.

SCHRAMM V, WILLENBORG K, KIM S, et al. Influence of a honeycomb facing on the flow through a stepped labyrinth seal[J]. ASME Journal of Engineering for Gas Turbines and Power, 2002, 124(1):140-146.

YAN X, LI J, SONG L, et al. Investigations on the discharge and total temperature increase characteristics of the Labyrinth seals with honeycomb and smooth lands[C]∥ ASME Turbo Expo 2008: Power for Land, Sea, and Air. New York, USA: ASME, 2008: 1407-1414.

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Effects of Gap Pressure Ratio and Rotational Speed on Discharge Behavior of Labyrinth Seal

Study of the Mechanism of Electrostatic Accumulation and Current Density Distribution Characteristics During Liquid Hydrogen Pipeline Transportation

Numerical Simulation of Space Charge Distribution Characteristics of Polyimide Materials under X-Ray Irradiation

Numerical Simulation Study on Geothermal Extraction Characteristics of Supercritical CO2 in Heterogeneous Fractures

Action Mechanism of Heat Transfer between the Working Medium and the Impeller on Aerodynamic Performance and Flow Characteristics of Radial Inflow Turbines with Supercritical Carbon Dioxide

Related Author

SUN Wenhao

LIU Hongbao

WANG Lei

QING Ziyou

LI Zhuolun

MA Yuan

LI Yanzhong

ZHONG Hui

Related Institution

School of Energy and Power Engineering，Xi’an Jiaotong University

Aerospace System Engineering Shanghai

School of Electrical Engineering，Xi’an Jiaotong University

Northwest Institute of Nuclear Technology

Institute of Electronic Engineering，China Academy of Engineering Physics

⁰