| WANG Shipeng,DING Xuexing,DING Junhua,ZHANG Lanxia,JIANG Andi.Effect of Micro-pore Geometric Configuration on Dynamic Lubrication Performance of Floating Ring Gas Seal[J],53(13):139-150, 174 |
| Effect of Micro-pore Geometric Configuration on Dynamic Lubrication Performance of Floating Ring Gas Seal |
| Received:July 18, 2023 Revised:December 06, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2024.13.014 |
| KeyWord:floating ring seal surface micro-texture gas lubrication sealing performance finite difference method |
| Author | Institution |
| WANG Shipeng |
College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou Gansu , China |
| DING Xuexing |
College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou Gansu , China |
| DING Junhua |
College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou Gansu , China |
| ZHANG Lanxia |
College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou Gansu , China |
| JIANG Andi |
College of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou Gansu , China |
|
| Hits: |
| Download times: |
| Abstract: |
| In order to explore the effect of diverse micro-pore geometric configurations on the performance parameters of floating ring air-film seal, an intricate and elaborate lubrication model was employed for surface-textured floating ring seals based on the principles of gas film lubrication theory. Four distinct categories of micro-textured apertures, namely circles, squares, ellipses, and triangles, were meticulously selected as the focal points for comprehensive and in-depth inquiry. The intricate and complex fluid dynamic pressure control equations were deftly and expertly managed by the finite difference method, thereby precisely and accurately determining the intricate distribution of gas pressure within the sealing gap. The experimental validation unequivocally affirmed the precision, exactitude, and validity of the painstakingly constructed and meticulously refined theoretical model. The work aimed to delve into the profound and far-reaching effect exerted by micro-textured apertures exhibiting diverse geometric configurations on the sealing performance of the floating ring. The empirical findings incontrovertibly and irrefutably indicated that micro-textured apertures possessed the inherent and remarkable capability to engender and elicit profound hydrodynamic pressure effects, with linear profile characteristics decidedly and markedly surpassing their curvilinear counterparts in terms of sheer performance and efficacy. The hierarchical ordering of impact on the overall sealing performance was meticulously and scrupulously determined to be triangle, ellipse, square and circle. Under comparable operational conditions that were meticulously devised and rigorously calibrated, micro-textured apertures featured distinct geometric configurations exhibited and manifested analogous and akin variations in the parameters governing and dictating the performance of the sealing mechanism. The augmentation and escalation of rotational speed, inlet pressure, and eccentricity occurred in a concurrent and harmonious manner, invariably leading to a proportional and commensurate augmentation and escalation of the opening force. As the depth and dimension of the micro-textured apertures gradually and incrementally increased and expanded, an easily discernible and palpable attenuation and diminution in the dynamic pressure ensued, thereby culminating in a reduction and decrement in the overall magnitude and magnitude of the opening force. In tandem and synchronization with the heightened and elevated levels of inlet pressure, eccentricity, and the depth of the micro-textured apertures, the leakage rate displayed and exhibited a pronounced and conspicuous escalation and amplification, while concurrently revealing and exhibiting a gradual decline and descent with the progressive advancement and acceleration of rotational speed. The gas friction force, with its inherent and innate propensity and tendency to increase and amplify, exhibited and demonstrated a steadfast and unwavering positive correlation and correspondence with the escalation, augmentation, and upswing of rotational speed, inlet pressure, and eccentricity. In contrast, the gas film friction force, affected and governed by its own set of dynamics and characteristics, evinced and showed an inverse and opposite relationship and association with the depth and dimension of the micro-textured apertures. The far-reaching and significant research findings derived from the meticulous and exhaustive research endeavor provide and furnish a robust and resilient theoretical framework that serves as an indispensable and indispensable guiding reference and compass for the meticulous and precise fabrication and production of the shaft sleeve within the realm and domain of the floating ring gas seal. |
| Close |
|
|
|