Propulsion system for a ship

Details Propulsion system for a ship Propulsion system for a ship

B - Operations, Transporting

63

H

B63H 11/08 (2006.01) B63H 23/34 (2006.01) B63H 23/32 (2006.01)

Patent

CA 2410497

The invention comprises a propulsion system for ships comprising an impeller (13, 14), a stator shell (1), and an impeller housing (3) for achieving a water jet, a shaft (11, 12) for the propulsion of the impeller (13), and a bearing arrangement for the shaft (11, 12) in the stator shell (1), and preferably a sealing (15) of the shaft (11, 12) in the impeller housing (3), wherein the shaft (11, 12) consists of a light weight shaft, which has considerably lower bending rigidity than a homogenous, conventional steel shaft, and the driving force is transmitted via at least one non-flexible coupling (11B, 12A) and via said bearing arrangement which is rigid as to bending and handles the axial load, to the stator shell (1), such that a high power density is achieved.

L'invention concerne un système propulseur destiné à des bateaux et comprenant une turbine (13, 14), une coque stator (1) et un carter de turbine (3) permettant de produire un jet d'eau, un arbre (11, 12) de propulsion de la turbine (13), et un système palier destiné à l'arbre (11, 12) placé dans la coque stator (1) et, de préférence, un élément d'étanchéité (15) destiné à l'arbre (11, 12) et logé dans le carter de turbine (3). L'arbre (11, 12) consiste en un arbre léger qui a une résistance à la flexion nettement plus basse qu'un arbre d'acier classique homogène, et la force motrice est transmise par au moins un accouplement non flexible (11B, 12A) et par ce système palier qui est rigide en flexion et qui gère la charge axiale, vers la coque de stator (1), de manière à obtenir une grande puissance volumique.

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