Theoretical and experimental investigation on maximum pressure loads of labyrinth seal’s teeth

Jiang, Jie; Yang, Yiyong; Li, Yongjian; Huang, Weifeng

doi:10.1177/1687814018794348

Cited by 3 publications

(3 citation statements)

References 21 publications

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“…10 Jiang et al established a numerical model predicting the pressure distribution across the labyrinth sleeves. 11 Tang et al, Zhang et al, and Pang et al conducted theoretical simulations and experimental studies of the dynamic sealing performance of the labyrinth sleeves. [12][13][14] Besides the labyrinth structure, research works were carried out to investigate the transverse dynamic motion of the piston for LC, and to reduce the labyrinth clearance to improve its efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…established a numerical model predicting the pressure distribution across the labyrinth sleeves. 11 Tang et al., Zhang et al., and Pang et al. conducted theoretical simulations and experimental studies of the dynamic sealing performance of the labyrinth sleeves.…”

Section: Introductionmentioning

confidence: 99%

“…10 Jiang et al established a numerical model predicting the pressure distribution across the labyrinth sleeves. 11 [12][13][14] Besides the labyrinth structure, research works were carried out to investigate the transverse dynamic motion of the piston for LC, and to reduce the labyrinth clearance to improve its efficiency. According to Tsai's research, the piston experiences periodic eccentric movement in the cylinder bore.…”

Section: Introductionmentioning

confidence: 99%

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Research of transverse dynamic oscillation for the piston in labyrinth compressor

Zhang

Liu

Hao³

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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In labyrinth compressor, non-contact labyrinth sealing clearance was designed between piston and cylinder wall to process oil-free gas containing fine particles. To prevent the collision between piston and cylinder wall, this labyrinth clearance was usually set bigger than 2‰ of the piston diameter. Such a big clearance seriously increased the leakage rate and reduced the volume efficiency of the compressor. Thus, it was necessary to investigate the piston transverse oscillation, and find a way to minimize the oscillation amplitude to reduce the labyrinth clearance set. In this paper, a dynamic model was established to predict the piston transverse oscillation based on inertia mass vibration analysis and finite difference method. Experiments investigation of the piston transverse oscillation track showed high prediction accuracy of the proposed model. Then, structure parameters optimization of the compressor was carried out to reduce piston oscillation amplitude. It was found that ratio of the crank shaft radius to connecting rod length and the position of the guide bearing were two key parameters determining the oscillation amplitude. Finally, a case study showed that the oscillation amplitude could be reduced by 53% by adopting optimized parameters.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Research of transverse dynamic oscillation for the piston in labyrinth compressor

Zhang

Liu

Hao³

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Experimental evaluation of steel particle conveying characteristics in a rotary vane feeder under high pressure

Zhao

Li³

et al. 2019

Powder Technology

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Influences of Randomly Uncertain Factors on Dynamic Coefficients of an Interlocking Labyrinth Seal-Rotor System

2022

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Many randomly uncertain factors inevitably arise when gas flows through a labyrinth seal, and the orbit of the rotor center will not rotate along a steady trajectory, as previously studied. Here, random uncertainty is considered in an interlocking labyrinth seal-rotor system to investigate the fluctuations of dynamic coefficients. The bounded noise excitation is introduced into the momentum equation of the gas flow, and as a result, the orbit of the rotor center is expressed as the combination of an elliptic trajectory with the bounded noise perturbation. Simulation results of the coefficients under randomly uncertain perturbations with various strengths are comparatively investigated with the traditional predictions under ideal conditions, from which the influences of random uncertain factors on dynamic coefficients are analyzed in terms of the rotor speed, pressure difference, and inlet whirl velocity. It is shown that the deviation levels of the dynamic coefficients are directly related to the random perturbations and routinely increase with such perturbation strengths, and the coefficients themselves may exhibit distinct variation patterns against the rotor speed, pressure difference, and inlet whirl velocity.

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Theoretical and experimental investigation on maximum pressure loads of labyrinth seal’s teeth

Cited by 3 publications

References 21 publications

Research of transverse dynamic oscillation for the piston in labyrinth compressor

Research of transverse dynamic oscillation for the piston in labyrinth compressor

Experimental evaluation of steel particle conveying characteristics in a rotary vane feeder under high pressure

Influences of Randomly Uncertain Factors on Dynamic Coefficients of an Interlocking Labyrinth Seal-Rotor System

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