A seal arrangement for sealing around a rotating shaft that passes through a ship bulkhead includes an expandible and contractible seal ring made of several seal ring segments, and radial actuators that engage the seal ring segments and can be power-activated, e.g. with a pressure medium, to pull the seal ring segments radially outwardly, thereby expanding the seal ring to a larger diameter spaced away from the shaft. When the radial actuators are not activated, the biasing force of springs contracts the seal ring segments to a smaller diameter, to establish sealing contact of the seal ring on the shaft. In normal operation a control unit activates the actuators, but if sensors detect a power failure or water in the ship, or a manual switching is triggered, then the seal arrangement contracts under spring force into the sealing condition with the seal rings sealing against the shaft.


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    Titel :

    Shaft seal arrangement for a ship bulkhead


    Beteiligte:
    BRAND JOERG (Autor:in)

    Erscheinungsdatum :

    08.09.2015


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F16J Kolben , PISTONS



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