WATER-JET PROPULSION SYSTEM FOR SHIPS WHICH ARE INTENDED TO BE USED IN SHALLOW WATERS

摘要

A water-jet propulsion system for ships, which are intended to be used in shallow waters. A semi-axial, bladed turbine wheel with a vertical axis of rotation is disposed so that it can rotate in a well-shaped pressure housing. Into the pressure housing, the driving mechanism for the turbine wheel is introduced from above through a cover plate. At the lower end, the pressure housing is closed off by a bottom plate, which has a concentric, centrally disposed water inlet for axial flow against the turbine wheel and at least one water outlet with a shallow inclination. A guiding apparatus in which the flow energy of the water conveyed by the turbine wheel is largely converted into pressure energy is disposed between the outlet end of the conveying channels of the turbine wheel and the at least one water outlet. A bottom plate is structurally separated from the well-shaped pressure housing and its cover plate and the pressure housing is integrated into the load-bearing structure of the ship as a component of the same. The bottom plate together with the water inlet that is integrated into it and the at least one water outlet can be rotated continuously about the longitudinal axis of the pressure housing in both circumferential directions.