A Theoretical and Experimental Study on Characteristics of Water-Lubricated Double Spiral–Grooved Seals

Zhang, Guo-Yuan; Zhao, Wei; Yan, Xiu-Tian; Yuan, Xiao

doi:10.1080/10402004.2010.546035

Cited by 26 publications

(27 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The experimental results with water as the sealing fluid are supposed to provide the seal performance with the low-viscosity fluid (water, liquid oxygen and liquid hydrogen) as the sealing fluid. Our previous experimental results show that the phenomenon of twophase flow occurs because the face temperature of the seal is higher than 100°C, and the liquid and gas water appear simultaneously in the test process [11].…”

Section: Introductionmentioning

confidence: 99%

“…Due to the extremely small viscosity at cryogenic temperatures of the sealed fluid, the seals have to operate under poor lubricating conditions. We have developed a water-lubricated test system and completed a low-viscosity simulated experimental test with water as the sealed fluid [11][12][13]. The experimental results with water as the sealing fluid are supposed to provide the seal performance with the low-viscosity fluid (water, liquid oxygen and liquid hydrogen) as the sealing fluid.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

An Experimental Test on a Cryogenic High-Speed Hydrodynamic Non-Contact Mechanical Seal

et al. 2017

View full text Add to dashboard Cite

This version is available at https://strathprints.strath.ac.uk/61655/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Abstract The non-contact mechanical seal of a high-speed turbopump in a liquid rocket engine operates under very harsh conditions (such as rapid start-up, cryogenic, highspeed, high-pressure and low-viscosity sealing fluid). The performance of the seal is very different to the performance under normal running conditions. In this paper, for the sake of safety, an experiment is carried out with liquid nitrogen as the sealing fluid. The experimental results with liquid nitrogen are expected to provide an equivalent seal performance as would be experienced with liquid oxygen and liquid hydrogen rocket engine. The main performance parameters, including face temperatures, leakage, face friction force, and friction coefficients, are measured in the speed-up, stable, and speed-down stages. The results show that in the speed-up stage, with rapidly increasing speed, the local face temperature rises dramatically to even higher than the vaporization temperature of liquid nitrogen, and a two-phase flow phenomenon occurs. In the start-up and stable stages, the friction coefficients are 0.25 and 0.13, respectively. After the test, it was found that the wear thickness of the rotor was 0.2 mm, and serious point corrosion appeared on the surface of the stator.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Experimental Test on a Cryogenic High-Speed Hydrodynamic Non-Contact Mechanical Seal

et al. 2017

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…Therefore, a rapid and accurate prediction of the tribological characteristics of different sealing materials is important. Modeling and simulation of the friction and wear of seals are significant methods in sealing material research [4][5][6]. Frölich et al [7] used a comprehensive approach for seals, which took into consideration the interaction of temperature, friction, and wear, and a macroscopic simulation model was developed.…”

Section: Introductionmentioning

confidence: 99%

A microscale mesh numerical method for simulating tribological characteristics of sealing materials

Gong

Zhang²,

Che

et al. 2016

Numerical Meth Engineering

View full text Add to dashboard Cite

SUMMARYA numerical method based on the movable cellular automata (MCA) is presented. The proposed method aims to investigate the tribological characteristics of polytetrafluoroethylene, polyimide, and polyetheretherketone sealing polymer materials in the microscale. The microscale frictional behavior and wear processes of four sealing materials are vividly shown through this grid method. The formation of a mechanically mixed layer is visualized, and the rotation angles of the automata and number of worn cellular automata are obtained. Friction coefficients of the four sealing materials are calculated and compared on a microscale mesh. Tests are conducted on a special test rig of the seal. Scanning electron microscopy investigations reveal the wear patterns of the four sealing composites. Results indicate that the MCA simulations are consistent with the scanning electron microscopy investigations in terms of the wear mechanism. The proposed MCA method can be used to investigate and compare the tribological characteristics of different sealing materials, which will significantly improve the efficiency of sealing material selection.

show abstract

“…Given the uncertainty surrounding both the expected leakage and rotordynamic performance of the floating bushing seals, a number of other seal technologies were also explored for their viable use with the GEL bearing test rig. These seals included lip seals [122,123], labyrinth seals [124][125][126][127][128][129][130][131][132][133][134], a variety of annular seals including bushing, ring, honeycomb, and hole pattern seals [135][136][137][138][139][140][141][142][143][144][145][146], centrifugal motion seals [47,147,148], and mechanical seals [149][150][151][152][153][154][155][156][157][158][159][160][161][162][163]. However, these sealing technologies also faced a number of technical hurdles to being implemented in GEL environments including Hence, after considering the uncertainty surrounding the cu...…”

Section: Bearing Sealsmentioning

confidence: 99%

Gas-Expanded Lubricants for Increased Energy Efficiency and Control in Rotating Machinery

Weaver¹

View full text Add to dashboard Cite

A Theoretical and Experimental Study on Characteristics of Water-Lubricated Double Spiral–Grooved Seals

Cited by 26 publications

References 10 publications

An Experimental Test on a Cryogenic High-Speed Hydrodynamic Non-Contact Mechanical Seal

An Experimental Test on a Cryogenic High-Speed Hydrodynamic Non-Contact Mechanical Seal

A microscale mesh numerical method for simulating tribological characteristics of sealing materials

Gas-Expanded Lubricants for Increased Energy Efficiency and Control in Rotating Machinery

Contact Info

Product

Resources

About