The invention relates to a water flow pressurizing guide pipe which is used for being arranged in front of a propeller of a stern to pretreat water flow so as to increase the efficiency of the propeller, and comprises a C-shaped flow equalizing guide pipe with a downward opening, and the flow equalizing guide pipe is fixed to the upper side of the front of the propeller. A plurality of rotational flow blades used for enabling water flow to generate pre-rotational flow before passing through the propeller are radially arranged on the inner side of the flow equalizing guide pipe, and the deflection direction of the rotational flow blades is opposite to the rotation direction of the propeller; the side, away from the propeller, of the flow-equalizing guide pipe is an inlet, the other side of the flow-equalizing guide pipe is an outlet, and the diameter of the inlet is larger than that of the outlet. According to the water flow pressurizing guide pipe, water flow is pressurized and accelerated when passing through the flow equalizing guide pipe, so that the propeller generates extra thrust; meanwhile, the rotational flow blades can generate pre-rotational flow, so that the rotation energy loss of a tail water flow field caused by the rotation of the propeller is reduced and improved; the device is simple and reliable in structure and convenient to install and maintain, has a good energy-saving effect, and can be additionally installed on an existing ship conveniently.

    本发明涉及一种水流加压导向管,用于设置在船艉的螺旋桨之前以对水流进行预处理,从而增加螺旋桨效率,包括C型、口部向下的均流导向管,所述均流导向管固定于螺旋桨前方上侧,均流导向管内侧呈放射状设有多个用于使水流在通过螺旋桨前产生预旋流动的旋流叶片,旋流叶片的偏转方向与螺旋桨的旋转方向相反;所述均流导向管的远离螺旋桨一侧为入口,另一侧为出口,所述入口直径大于出口直径。本发明的水流加压导向管,水流通过均流导向管时加压提速,使螺旋桨产生额外的推力;同时旋流叶片能够产生预旋流,减小和改善尾部水流场因螺旋桨的旋转而产生的旋转能量损失;结构简单可靠、安装维护方便,具有良好的节能效果,且便于对现有船舶进行加装。


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    Title :

    Water flow pressurizing guide pipe


    Additional title:

    一种水流加压导向管


    Contributors:
    CAI MINGFA (author) / SUN ZHI (author) / CHENG BAOGUO (author)

    Publication date :

    2024-09-10


    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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