Analysis of Dynamic Tracking Characteristics of Dry Gas Seals During Start-Up Process
Based on the small perturbation method, the transient pressure control equation considering real gas effects was solved, and the fitting expression for the dynamic characteristic parameters of the gas film during the start-up process was obtained. Subsequently, the influence of structural parameters...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-04-01
|
| Series: | Lubricants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2075-4442/13/5/201 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850257832172060672 |
|---|---|
| author | Qiangguo Deng Yong Zhou Pingyang Yu Hengjie Xu Xuejian Sun Wenyuan Mao |
| author_facet | Qiangguo Deng Yong Zhou Pingyang Yu Hengjie Xu Xuejian Sun Wenyuan Mao |
| author_sort | Qiangguo Deng |
| collection | DOAJ |
| description | Based on the small perturbation method, the transient pressure control equation considering real gas effects was solved, and the fitting expression for the dynamic characteristic parameters of the gas film during the start-up process was obtained. Subsequently, the influence of structural parameters of spiral-groove dry-gas seals on the dynamic tracking of the stationary ring’s motion during the non-steady-state start-up process under three-degree-of-freedom perturbations was analyzed. The results show that when the stationary and rotating rings initially separate, the stationary ring exhibits good tracking performance for both axial and angular motions of the rotating ring, although the tracking capability varies significantly. As time and film thickness increase, the tracking capability gradually weakens, and for the working film thickness, the tracking parameters tend to stabilize when the working film thickness is reached. The larger the spiral angles and the deeper the dynamic pressure grooves, the poorer the axial and angular tracking performance of the sealing ring. The number of grooves has a minimal impact on the axial and angular tracking performance of the stationary ring. A higher balance coefficient improves the axial and angular tracking performance of the stationary ring. |
| format | Article |
| id | doaj-art-738e0dbf4b0241f799471ddc71753c7d |
| institution | OA Journals |
| issn | 2075-4442 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Lubricants |
| spelling | doaj-art-738e0dbf4b0241f799471ddc71753c7d2025-08-20T01:56:19ZengMDPI AGLubricants2075-44422025-04-0113520110.3390/lubricants13050201Analysis of Dynamic Tracking Characteristics of Dry Gas Seals During Start-Up ProcessQiangguo Deng0Yong Zhou1Pingyang Yu2Hengjie Xu3Xuejian Sun4Wenyuan Mao5Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaFaculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, ChinaBased on the small perturbation method, the transient pressure control equation considering real gas effects was solved, and the fitting expression for the dynamic characteristic parameters of the gas film during the start-up process was obtained. Subsequently, the influence of structural parameters of spiral-groove dry-gas seals on the dynamic tracking of the stationary ring’s motion during the non-steady-state start-up process under three-degree-of-freedom perturbations was analyzed. The results show that when the stationary and rotating rings initially separate, the stationary ring exhibits good tracking performance for both axial and angular motions of the rotating ring, although the tracking capability varies significantly. As time and film thickness increase, the tracking capability gradually weakens, and for the working film thickness, the tracking parameters tend to stabilize when the working film thickness is reached. The larger the spiral angles and the deeper the dynamic pressure grooves, the poorer the axial and angular tracking performance of the sealing ring. The number of grooves has a minimal impact on the axial and angular tracking performance of the stationary ring. A higher balance coefficient improves the axial and angular tracking performance of the stationary ring.https://www.mdpi.com/2075-4442/13/5/201dry gas sealsstructural parameterstracking performanceaxial displacementangular tilt |
| spellingShingle | Qiangguo Deng Yong Zhou Pingyang Yu Hengjie Xu Xuejian Sun Wenyuan Mao Analysis of Dynamic Tracking Characteristics of Dry Gas Seals During Start-Up Process Lubricants dry gas seals structural parameters tracking performance axial displacement angular tilt |
| title | Analysis of Dynamic Tracking Characteristics of Dry Gas Seals During Start-Up Process |
| title_full | Analysis of Dynamic Tracking Characteristics of Dry Gas Seals During Start-Up Process |
| title_fullStr | Analysis of Dynamic Tracking Characteristics of Dry Gas Seals During Start-Up Process |
| title_full_unstemmed | Analysis of Dynamic Tracking Characteristics of Dry Gas Seals During Start-Up Process |
| title_short | Analysis of Dynamic Tracking Characteristics of Dry Gas Seals During Start-Up Process |
| title_sort | analysis of dynamic tracking characteristics of dry gas seals during start up process |
| topic | dry gas seals structural parameters tracking performance axial displacement angular tilt |
| url | https://www.mdpi.com/2075-4442/13/5/201 |
| work_keys_str_mv | AT qiangguodeng analysisofdynamictrackingcharacteristicsofdrygassealsduringstartupprocess AT yongzhou analysisofdynamictrackingcharacteristicsofdrygassealsduringstartupprocess AT pingyangyu analysisofdynamictrackingcharacteristicsofdrygassealsduringstartupprocess AT hengjiexu analysisofdynamictrackingcharacteristicsofdrygassealsduringstartupprocess AT xuejiansun analysisofdynamictrackingcharacteristicsofdrygassealsduringstartupprocess AT wenyuanmao analysisofdynamictrackingcharacteristicsofdrygassealsduringstartupprocess |