The invention relates to the technical field of ships, and particularly discloses a stern energy-saving device and a double-propeller ship, the stern energy-saving device comprises a rudder blade, a propeller shaft, propellers and vortex elimination fins, the cross sectional area of the rudder blade is gradually reduced from top to bottom, the propeller shaft comprises a connecting section and an extending section, the connecting section and the extending section extend in the axial direction of the propeller shaft and are connected, and the connecting section is connected with the extending section. The rudder blade is integrally arranged above the axis of the extending section, the rear end of the extending section extends to the position below the rudder blade, the propeller is fixedly arranged on the connecting section, the vortex eliminating fin is fixedly arranged on the connecting section or the extending section, and the vortex eliminating fin is arranged behind the propeller. According to the stern energy-saving device, the vortex eliminating fin, the propeller shaft extending section extending to the position below the rudder blade and the rudder blade located above the axis of the propeller shaft extending section are matched with one another, so that resistance borne by the rudder blade can be reduced, energy loss caused by trailing vortex is reduced, the ship navigation resistance is reduced, the propelling efficiency of a propeller is improved, and the service life of the propeller is prolonged. And the rapid performance of the ship is improved.

    本发明涉及船舶技术领域,具体公开了一种船艉节能装置及双桨船,该船艉节能装置包括舵叶、桨轴、螺旋桨和消涡鳍,舵叶的横截面积由上至下逐渐减小,桨轴包括连接段和延伸段,连接段和延伸段沿桨轴的轴向延伸设置且相连接,舵叶整体设置于延伸段的轴线的上方,延伸段的后端延伸至舵叶的下方位置处,螺旋桨固定设置在连接段,消涡鳍固定设置在连接段或延伸段,消涡鳍设置于螺旋桨的后方,船艉节能装置通过消涡鳍、延伸至舵叶的下方位置处的桨轴延伸段以及位于桨轴延伸段的轴线的上方的舵叶之间的相互配合,能够降低舵叶所受的阻力,减少了尾涡造成的能量损失,从而降低了船舶航行阻力,提升了螺旋桨的推进效率,提高了船舶的快速性能。


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    Title :

    Stern energy-saving device and twin-paddle ship


    Additional title:

    船艉节能装置及双桨船


    Contributors:
    MIAO FEI (author) / CHEN LEIQIANG (author) / HUANG GUOFU (author) / CHEN SHAOFENG (author) / ZHANG XIAOSONG (author) / GAO LIJIN (author) / HUANG SHUQUAN (author)

    Publication date :

    2024-12-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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