المنتجات الساخنة
Gas Labyrinth Seals: Improved Prediction of Leakage in Gas
网页2020年12月1日Leakage and Dynamic Force Coefficients for Two Labyrinth Gas Seals: Teeth-on-Stator and Interlocking Teeth Configurations. A CFD Approach to Their
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Investigation and improvement of the staggered labyrinth
网页2015年2月14日Three new designs, based on a good understanding of the seal mechanism, are presented, with one reducing leakage by 24.5%. Recent studies on
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Nature, causes, and prevention of labyrinth air seal failures
网页2012年5月22日Brush seals and labyrinth seals in gas turbine applications 9 November 2012 Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power
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Labyrinth-Seal Leakage Analysis ASME Digital Collection
网页1959年9月1日Accurate knowledge of seal leakage is necessary in at least three areas of design: (a) Estimating the effect of seal leakage on performance; (b) regulating the
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Theoretical and experimental research towards labyrinth
网页2022年3月15日This study aims to theoretically model the cryogenic labyrinth seal in the spindle. New leakage equations concerning both deformation and cavitation are
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Leakage Characteristic Identification of Labyrinth Seals on
网页2019年4月14日1. Introduction The labyrinth seal is contact-free, thus allowing the compression of high-purity gases. This characteristic also eliminates lubrication oil
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Leakage from labyrinth seals under stationary and
网页1996年6月1日Abstract. Although the leakage flow through labyrinth seals under stationary conditions has been examined by many investigators a reliable prediction of
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Numerical and Experimental Investigation of the Sealing
网页2019年6月24日The study mainly explores the optimal size of the labyrinth seal with decrease in the leakage and also analyzes the effects of viscosity and temperature,
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LEAKAGE PREDICTION OF LABRYNTH SEALS HAVING ADVANCED
网页Labyrinth seal reduces the internal fluid leakage by enhancement of friction inside the seal and dissipation of kinetic energy. The mode of achieving the friction is different in
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COMPARISON OF LEAKAGE BETWEEN A LABYRINTH SEAL AND
网页In July 2010, TRC funded a two-year program to (a) conduct non-proprietary leakage tests with a HALOTM seal and, for comparison, a three tooth labyrinth seal; and (b) to
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Nonuniform Clearance Effects on Pressure Distribution and Leakage
网页Research Article Nonuniform Clearance Effects on Pressure Distribution and Leakage Flow in the Straight-through Labyrinth Seals Yu Shi,1 Shuiting Ding,1,2 Tian Qiu,2 Peng Liu ,2 and Chuankai Liu2 1School of Energy and Power Engineering, Beihang University, Beijing 100191, China 2Research Institute of Aero-Engine, Beihang University, Beijing 100191,
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Reducing labyrinth seal leakage with application of axially
网页2022年4月1日[1] Kim T S and Cha K S 2009 Comparative analysis of the influence of labyrinth seal configuration on leakage behavior J. Mech. Sci. Technol. 23 2830-2838 Google Scholar [2] Chochua G, Shyy W and Moore J 2002 Computational modeling for honeycomb-stator gas annular seal Int. J. Heat Mass Transf. 45 1849-1863 Google
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Effects of swirl brake axial arrangement on the leakage performance
网页2021年1月1日Fig. 3 shows the computational model and mesh of the labyrinth seal with different brake configurations. As shown in Fig. 3, the computational model consists of the inlet region, seal cavities with swirl brakes and the outlet region.The computational model was built in 360° to obtain the non-uniform circumferential flow field and the exciting force
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Theoretical modeling for leakage characteristics of two-phase
网页2020年10月1日In 1908, Martin [11] presented the first empirical leakage equation for labyrinth seal, it is assumed for incompressible ideal gas. Based on Martin's equation, Egli [12],Kearton [13],Vermes [14] and other researchers continually innovated and improved so that a flow coefficient, a kinetic energy carry-over coefficient and an expansion
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Numerical Study of Leakage and Rotordynamic Performance of
网页2022年1月20日The numerical model of a staggered labyrinth seal working with supercritical carbon dioxide (S–CO<sub>2</sub>) is established. The dynamic and static characteristics of the staggered labyrinth seal for different axial shifting distances of the rotor, various cavity geometries (heights/widths of the rotor convex plate, heights of
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Theoretical and experimental research towards labyrinth sealing
网页2022年3月15日Leak performance of LN 2 across labyrinth seal in the cryogenic spindle is revealed.. LN 2 labyrinth seal leakage equations are built concerning deformation and cavitation.. Effects of tooth deformation and cavitation on sealing are quantitatively described. • Physical variables such as leak rate of supercooling LN 2 are accurately
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Experimental Study of Temperature Effect on Labyrinth Seal Leakage
网页2020年10月14日High rotational speed influence on the discharge coefficients in labyrinth seals has been studied experimentally by Waschka et al. [ 4 ], and they showed that the there is significant effect of rotation when the ratio of Taylor number and Reynolds number is beyond 0.2, after which it reduces the leakage rate.
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LABYRINTH SEAL LEAKAGE ANALYSIS CORE
网页Labyrinth Seal Leakage Analysis. (August 2011) Gaurav Chaudhary, B.E., Panjab University . Chair of Advisory Committee: Dr. Gerald L. Morrison. Seals are basic mechanical devices used in machinery to avoid undesired flow losses of working fluids. Particularly Annular seals are one of the most widely used in
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LEAKAGE PREDICTION OF LABRYNTH SEALS HAVING ADVANCED CAVITY
网页Figure 1 A Labyrinth Seal . A seal is an important component in all kinds of turbo machinery such as turbines, compressors, pumps etc. A seal is the device which reduces the leakage of the fluid from the high pressure regions of assembly and casing of the component to the low pressure regions and avoids backflow.
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A Fluid Mechanics Model to Estimate the Leakage of
网页proportional to the seal clearance and pressure drop in the following functional dependency: M C a(Ap)b, where 1.5 < a < 3 and 0.5 < b < 1. INTRODUCTION Labyrinth seals [1-7] have been used in steam turbines and compres-sors to reduce flow leakage for many years. These seals utilize a laby-
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Nonuniform Clearance Effects on Pressure Distribution and Leakage
网页Research Article Nonuniform Clearance Effects on Pressure Distribution and Leakage Flow in the Straight-through Labyrinth Seals Yu Shi,1 Shuiting Ding,1,2 Tian Qiu,2 Peng Liu ,2 and Chuankai Liu2 1School of Energy and Power Engineering, Beihang University, Beijing 100191, China 2Research Institute of Aero-Engine, Beihang University, Beijing 100191,
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Reducing labyrinth seal leakage with application of axially
网页2022年4月1日[1] Kim T S and Cha K S 2009 Comparative analysis of the influence of labyrinth seal configuration on leakage behavior J. Mech. Sci. Technol. 23 2830-2838 Google Scholar [2] Chochua G, Shyy W and Moore J 2002 Computational modeling for honeycomb-stator gas annular seal Int. J. Heat Mass Transf. 45 1849-1863 Google
Contact
Effects of swirl brake axial arrangement on the leakage performance
网页2021年1月1日Fig. 3 shows the computational model and mesh of the labyrinth seal with different brake configurations. As shown in Fig. 3, the computational model consists of the inlet region, seal cavities with swirl brakes and the outlet region.The computational model was built in 360° to obtain the non-uniform circumferential flow field and the exciting force
Contact
Theoretical modeling for leakage characteristics of two-phase
网页2020年10月1日In 1908, Martin [11] presented the first empirical leakage equation for labyrinth seal, it is assumed for incompressible ideal gas. Based on Martin's equation, Egli [12],Kearton [13],Vermes [14] and other researchers continually innovated and improved so that a flow coefficient, a kinetic energy carry-over coefficient and an expansion
Contact
Numerical Study of Leakage and Rotordynamic Performance of
网页2022年1月20日The leakage flow rate of the staggered labyrinth seal decreases with the increasing convex plate height, the seal cavity height, and the decreasing seal clearance. 1. Introduction During the 1960s–1970s, supercritical carbon dioxide (S–CO 2) was first proposed as a working fluid in a Brayton cycle by Angelino [ 1 ], Feher [ 2 ], and Combs [
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Theoretical and experimental research towards labyrinth sealing
网页2022年3月15日Leak performance of LN 2 across labyrinth seal in the cryogenic spindle is revealed.. LN 2 labyrinth seal leakage equations are built concerning deformation and cavitation.. Effects of tooth deformation and cavitation on sealing are quantitatively described. • Physical variables such as leak rate of supercooling LN 2 are accurately
Contact
LABYRINTH SEAL LEAKAGE ANALYSIS CORE
网页Labyrinth Seal Leakage Analysis. (August 2011) Gaurav Chaudhary, B.E., Panjab University . Chair of Advisory Committee: Dr. Gerald L. Morrison. Seals are basic mechanical devices used in machinery to avoid undesired flow losses of working fluids. Particularly Annular seals are one of the most widely used in
Contact
A Fluid Mechanics Model to Estimate the Leakage of
网页FLUID MECHANICS INCOMPRESSIBLE MODEL TO ESTIMATE THE LEAKAGE OFFLUIDS THROUGH LABYRINTH SEALS J. T. Han Date Published August 1978 NOTICE: This document contains information of a preliminarynature. It is subject to revision or correction and there-fore does not represent a final report.
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LEAKAGE PREDICTION OF LABRYNTH SEALS HAVING ADVANCED CAVITY
网页Figure 1 A Labyrinth Seal . A seal is an important component in all kinds of turbo machinery such as turbines, compressors, pumps etc. A seal is the device which reduces the leakage of the fluid from the high pressure regions of assembly and casing of the component to the low pressure regions and avoids backflow.
Contact
Numerical and Experimental Studies of Labyrinth Seal
网页2019年9月16日Abstract. A labyrinth seal is commonly used to decrease the flow leakage loss between rotating and static components in aero engines. It is susceptible to aeroelastic instability because of its low stiffness. The aim of this study was to establish methods to predict and suppress it effectively. To achieve this, both numerical and experimental
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