Ship's propulsion arrangement and method

Details Ship's propulsion arrangement and method Ship's propulsion arrangement and method

2007-03-13

2007-03-13

Vasudeva, Ajay (Department: 3617)

Marine propulsion

Electric drive for propelling means

C310S052000, C310S064000

Reexamination Certificate

active

10479979

ABSTRACT:
The invention relates to a ship's propulsion and steering arrangement surrounded by water comprising an electric motor in a chamber, a propeller shaft associated with the electric motor having a propeller fitted outside the chamber, and a pressure source for pressurizing the chamber with air or some other pressurizing medium. The invention also relates to a method for managing fluid flows in the propulsion and steering arrangement of the aforementioned kind, wherein the chamber is sealed against the water pressure from outside and against other compartments of the ship. The chamber is pressurized by means of a flowing medium, monitoring of the pressure in the chamber is performed, and the composition of the medium escaping from the chamber in a controlled manner is monitored. Further, the invention comprises a method for improving the cooling by means of a pressurized gaseous medium.

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