A vortex elimination fin structure with detachable fins comprises a flow guide body, a cavity is formed in the flow guide body, four or five grooves with one open end are formed in the outer portion of the flow guide body, the fins are installed in the grooves, a round hole is formed in the rear side of the flow guide body, a flange is arranged on the front side of the flow guide body, and a sealing groove is formed in the end face of the flange. When the propeller is installed on the propeller shaft and pressed through a fixing nut, the flow guide body is installed on the propeller hub through the bolt, grease is injected through the round hole in the rear end of the flow guide body, the rear end cover is used for sealing after the flow guide body is filled with the grease, and the situation that seawater corrodes parts, and consequently the propeller is difficult to disassemble is prevented. And finally, the fins are installed in the grooves of the flow guide body and fixed through stainless steel screws. The device has the advantages of being simple in structure, convenient to machine and manufacture, low in cost, easy to maintain, capable of reducing capacity loss of rotating water flow on the rear side of the propeller, reducing exciting force and noise of wake flow of the propeller, further reducing oil consumption of a main engine, improving ship propelling performance and the like.

    一种带可拆卸鳍叶的消涡鳍结构,包括有一导流体,导流体内部为空腔,导流体外部是一端开口的4道或5道凹槽,凹槽内安装鳍叶,导流体后侧开圆孔,导流体前侧为法兰,法兰端面上有密封槽。当螺旋桨安装至螺旋桨轴上,并通过固定螺母压紧,先将导流体通过螺栓安装至螺旋桨桨毂上,通过导流体后端圆孔注入油脂,注满油脂后,用后端盖封闭起来,防止海水腐蚀零件而导致螺旋桨难以拆卸。最后,将鳍叶安装至导流体的凹槽内,并用不锈钢螺钉固定。本装置具有结构简单,便于加工制造,成本低,易于维护,而且能够减少螺旋桨后侧旋转水流的能力损失,降低螺旋桨尾流的激振力和噪音,进一步降低主机油耗,提升船舶推进性能等特点。


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    Title :

    Vortex elimination fin structure with detachable fins


    Additional title:

    一种带可拆卸鳍叶的消涡鳍结构


    Contributors:
    ZHANG RUIBIAO (author) / ZHAO PENG (author) / TIAN YONGJIAN (author) / HE JIAN (author) / SUN GUOJIE (author)

    Publication date :

    2020-10-02


    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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