The low-noise pump-jet propeller comprises stator blades, rotor blades and a rotor hub, the stator blades, the rotor blades and the rotor hub are located in a guide pipe, a plurality of rotor blades arranged in a circumferential array are installed on the rotor hub, a plurality of stator blades arranged in a circumferential array are installed on the inner wall of the guide pipe, and the rotor blades and the stator blades are arranged on the inner wall of the guide pipe. The guide pipe and the rotor hub are both connected with a ship body, a rotary type integral blade crown is arranged at the tops of the rotor blades, and the rotary type integral blade crown and the guide pipe are both of a rotary structure with the axis of the pump-jet propeller as a rotary shaft. Under the condition that it is guaranteed that the propelling performance of the pump-jet propeller is equivalent, a rotary integral blade crown is additionally arranged at the top of a rotor blade, so that a flow field of a blade top gap becomes more uniform, blade top gap vortexes are eliminated, the amplitude of blade top gap pulsating pressure can be effectively reduced, line spectrum components in gap exciting force can be eliminated, and the blade top gap pulsating effect is improved. And the frequency spectrum characteristic amplitude is greatly reduced.

    本发明公开了一种转子叶片带叶冠的低噪声泵喷推进器,包括位于导管内部的定子叶片、转子叶片与转子轮毂,所述转子轮毂上安装有若干个呈圆周阵列的转子叶片,所述导管的内壁上安装有若干个呈圆周阵列的定子叶片,所述导管与转子轮毂均与船体相连接,若干个所述转子叶片顶部设置有回转型整体式叶冠,所述回转型整体式叶冠与导管均以泵喷推进器的轴线为旋转轴的回转结构。在保证泵喷推进器推进性能相当的情况下,通过在转子叶片顶部增设一回转型的整体式叶冠,可以使叶顶间隙的流场变得更加均匀,叶顶间隙涡得以消除、可以有效降低叶顶间隙脉动压力的幅值、可以消除间隙激励力中的线谱成分,频谱特性幅值大幅降低。


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    Title :

    Low-noise pump-jet propeller with rotor blades provided with blade crowns


    Additional title:

    一种转子叶片带叶冠的低噪声泵喷推进器


    Contributors:
    ZOU DONGLIN (author) / XUE LIN (author) / RAO ZHUSHI (author) / TA NA (author) / DONG XINGUO (author) / YANG YUZE (author)

    Publication date :

    2023-12-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B63G OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS , Angriffs- oder Verteidigungsanordnungen auf Schiffen



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