There is provided a shaft sealing device in which a leakage of a sealed fluid to a leakage side space can be easily repaired. A shaft sealing device 1 sealing a sealed fluid includes a mating ring 5 having a sliding surface 51 and attached to a casing 4 into which a rotating shaft 3 is inserted, a commonly used seal ring 6 having a sliding surface 62a that slides against the sliding surface 51 of the mating ring 5, and attached to the rotating shaft 3, and the sliding surfaces 51 and 62a, and a backup seal ring 7 attached to the rotating shaft 3 on a counter-sealed fluid side in an axial direction with respect to the sliding surface 51 of the mating ring 5 and the sliding surface 62a of the commonly used seal ring 6, and having a sliding surface 72a facing the sealed fluid in the axial direction. The backup seal ring 7 is movable toward the sealed fluid in the axial direction.
SHAFT SEALING DEVICE
WELLENDICHTUNGSVORRICHTUNG
DISPOSITIF D'ÉTANCHÉITÉ D'ARBRE
19.03.2025
Patent
Elektronische Ressource
Englisch
SEALING DEVICE OF PROPELLER SHAFT AND SEALING METHOD OF PROPELLER SHAFT
Europäisches Patentamt | 2015
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