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http://dx.doi.org/10.18419/opus-13798
Autor(en): | Engelfried, Maximilian Haffner, Georg Baumann, Matthias Bauer, Frank |
Titel: | Modeling the pumping behavior of macroscopic lead structures on shaft counterfaces of rotary shaft seals |
Erscheinungsdatum: | 2023 |
Dokumentart: | Zeitschriftenartikel |
Seiten: | 19 |
Erschienen in: | Lubricants 11 (2023), No. 495 |
URI: | http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-138171 http://elib.uni-stuttgart.de/handle/11682/13817 http://dx.doi.org/10.18419/opus-13798 |
ISSN: | 2075-4442 |
Zusammenfassung: | The leak tightness of the sealing system rotary shaft seal is based on the formation of an active back-pumping effect of the sealing ring. Here, the sealing ring pumps the fluid in the sealing gap back into the housing. However, this active sealing mechanism is disturbed by so-called “lead structures”. Lead structures include all types of directional structures on the sealing counterface which create rotation-dependent axial fluid pumping. Lead-affected sealing counterfaces can thus cause leakage or insufficient lubrication of the sealing contact. To ensure leak tightness, lead must be avoided or tolerated. This article investigates how different structural characteristics of lead affect the amount of fluid pumped by the shaft surface. For this purpose, 26 shafts are subjected to surface analyzing methods and an experimental pumping rate test. The interaction of various geometric features of the lead structures and their combined effect on the pumping capacity is modeled based on the measured data. Appropriated correlation models are discussed and relationships between shaft lead and its pumping effect are shown. The aim is to estimate shaft pumping rates based on surface measurements in future. The results contribute to the derivation of measurable tolerance values for lead and to the prevention of leakage. |
Enthalten in den Sammlungen: | 07 Fakultät Konstruktions-, Produktions- und Fahrzeugtechnik |
Dateien zu dieser Ressource:
Datei | Beschreibung | Größe | Format | |
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Modeling the Pumping Behavior of Macroscopic Lead_Engelfried_Haffner_Bauman_Bauer_Lubricants-11-00495.pdf | 12,64 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons