The invention provides a ducted propeller for weakening a tip clearance vortex and a use method thereof. The ducted propeller comprises a pipe body, wherein a groove is formed in the inner wall of the pipe body; blade tips of the blades are positioned in the grooves; the skin is laid on the inner wall of the pipe body; the first ring assembly is located between the pipe body and the skin. The inner wall of the first ring assembly is bonded to the skin, the first ring assembly has the capacity of deforming and changing the inner diameter and drives the part, not bonded to the first ring assembly, of the skin to elastically stretch or contract, and the distance between the part, bonded to the inner wall of the first ring assembly, of the skin and the blade tip is adjusted; the first ring assembly deforms and changes the inner diameter of the first ring assembly, so that the skin is driven to stretch or contract, the distance between the inner wall of the first ring assembly and the skin on the first ring assembly and the blade tip is adjusted, and the amount of fluid flowing through the tip gap is controlled by reducing the tip gap as much as possible but not completely eliminating the tip gap. The fluid is controlled to form a small vortex core after flowing through the tip gap, and meanwhile the fluid is prevented from being transferred through other parts of the paddle under the action of the pressure difference of the two sides of the paddle.

    本发明提出了一种削弱梢隙涡的导管螺旋桨及其使用方法,包括管体内壁上开设有沟槽;桨叶叶梢位于沟槽内;蒙皮敷设在管体内壁上;第一环组件位于管体与蒙皮之间;第一环组件内壁粘接于蒙皮,第一环组件具有形变且改变内径的能力并带动蒙皮粘接第一环组件以外的部分弹性拉伸或者收缩,并调整蒙皮被第一环组件内壁粘接的部分与桨叶叶梢的间距;通过第一环组件形变并改变自身内径,从而带动蒙皮拉伸或者收缩,从而调整第一环组件内壁及其上的蒙皮与桨叶叶梢的间距大小,通过尽可能的缩小梢隙但又不会完全消除梢隙来控制流经梢隙的流体量,控制流体流经梢隙后形成较小的涡核,同时避免流体在桨叶两侧压力差的作用下通过桨叶的其他部分进行转移。


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    Title :

    Ducted propeller capable of weakening tip clearance vortex and use method of ducted propeller


    Additional title:

    一种削弱梢隙涡的导管螺旋桨及其使用方法


    Contributors:
    WU JIAFENG (author) / LIU BING (author) / CHEN WEI (author) / HU XU (author) / CAO CHANG (author) / XIE XING (author) / SHA BINBIN (author) / NIU SHUAI (author)

    Publication date :

    2024-02-02


    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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