The invention provides a double-stage propeller for a ship, which relates to ship propelling devices. The double-stage propeller for the ship comprises a front engine, a rear engine, a front propeller, a rear propeller and a square tube-shaped housing. The front propeller is mounted on an output shaft of the front engine; and the rear propeller is mounted on an output shaft of the rear engine. The front propeller and the rear propeller have equal diameters and are placed within the square tube-shaped housing with one in front of another. A forward angle between the rotating plane of the front propeller and a left plate of the square tube-shaped housing is not more than 80 DEG. A backward angle between the rotating plane of the rear propeller and the left plate of the square tube-shaped housing is not more than 80 DEG. The rotating planes of the front propeller and the rear propeller are vertical to both a top plate and a bottom plate of the square tube-shaped housing. The front propeller and the rear propeller respectively rotate within the square tube-shaped housing under the driving of the front engine and the rear engine so as to suck the water ahead of them into the square tube-shaped housing and then extrude the water from the backside of the square tube-shaped housing. Compared with the traditional ship propeller, the double-stage propeller for the ship, provided by the invention, has the advantages of large thrust face, low resistance and high efficiency.


    Access

    Download


    Export, share and cite



    Title :

    Double-stage propeller for ship


    Contributors:

    Publication date :

    2016-01-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

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



    Two-stage propeller for ship

    LEI ZHENYOU | European Patent Office | 2020

    Free access

    Double-lever propeller-powered ship

    ZHAO BAIHUA | European Patent Office | 2015

    Free access

    Double-body oblique propeller ship

    WANG ZHICHENG | European Patent Office | 2015

    Free access

    Double-engine and double-propeller refueling ship

    ZHANG WENDONG / LUO YUANFANG / LI YUAN | European Patent Office | 2016

    Free access

    SHIP PROPELLER MOUNTING BRACKET, SHIP PROPELLER AND SHIP

    WANG QIANG / TAO SHIZHENG / WAN XIAOKANG | European Patent Office | 2023

    Free access