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).
Seal arrangement for a propeller shaft
Dichtungsanordnung für eine Antriebswelle
Agencement d'étanchéité pour un arbre d'hélice
2019-01-02
Patent
Electronic Resource
English
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
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