The propeller shaft (31) supported with at least one bearing (41) extends through an opening (O1) in the hull of the vessel to the propeller (32). The seal arrangement comprises a water seal (100) positioned on the propeller shaft (31) adjacent to the opening (O1) and a first oil seal (200) positioned on the propeller shaft (31) at an axial (X-X) distance from the water seal (100) adjacent to the bearing (41). An intermediate compartment (300) surrounds the water seal (100) and the first oil seal (200). A first pressure sensor (91) measures the pressure of the sea water acting at the propeller shaft (31) and a second pressure sensor (92) measures the pressure within the intermediate compartment (300). An air pressure system (500) produces an air pressure into the intermediate compartment (300), whereby the air pressure within the intermediate compartment (300) is kept at a lower level compared to the pressure of the sea water acting on the propeller shaft (31).


    Access

    Download


    Export, share and cite



    Title :

    Seal arrangement for a propeller shaft


    Additional title:

    Dichtungsanordnung für eine Antriebswelle
    Agencement d'étanchéité pour un arbre d'hélice


    Contributors:

    Publication date :

    2019-01-02


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING



    SEAL ARRANGEMENT FOR PROPELLER SHAFT AND METHOD FOR SEALING PROPELLER SHAFT

    SAMI PALOKANGAS | European Patent Office | 2015

    Free access

    SEAL ARRANGEMENT FOR A PROPELLER SHAFT AND METHOD FOR SEALING A PROPELLER SHAFT

    PALOKANGAS SAMI | European Patent Office | 2019

    Free access


    Seal arrangement for a rotating ship propeller shaft

    WRAGE MARKO / FANGAUF CARLOS | European Patent Office | 2016

    Free access

    Seal arrangement with improved shaft bushing for a rotating ship propeller shaft

    FANGAUF CARLOS / ZIEMEN LARS | European Patent Office | 2016

    Free access