The boundary layer suction type variable cross-section inlet flow channel comprises an inlet flow channel pipe body, an inlet flow channel cavity is formed in the inlet flow channel pipe body, the two ends of the inlet flow channel pipe body are open, and the water inlet end of the inlet flow channel pipe body is exposed to the lower portion of a ship bottom plate and is in a flat semi-oval shape; one end of a water outlet of the inlet flow channel pipe body extends out of the side wall of the ship body, and the part, close to the water inlet, of the inlet flow channel pipe body is gradually transited to a circular pipeline from a flat oval pipeline to the water outlet of the inlet flow channel pipe body. The water jet propulsion system comprises at least one set of suction type inlet flow channel and a propulsion pump, the boundary layer suction type variable cross-section inlet flow channel for water jet propulsion is applied to the suction type inlet flow channel, and the propulsion pump is arranged in an inner cavity at one end of the water outlet of the inlet flow channel pipe body. The ship bottom boundary layer fluid can be fully utilized, the risks of impeller bubble cavitation and the like are not likely to happen, the method is suitable for high-speed ships, and compared with a traditional water spraying propulsion mode, the higher navigational speed can be achieved.

    本发明公开了一种用于喷水推进的边界层吸入式变截面进口流道,包括进口流道管体,进口流道管体内开设有进口流道腔且两端开口,进口流道管体进水口一端外露在船底板下方且呈扁平半椭圆形,进口流道管体出水口一端自船身侧壁伸出,进口流道管体靠近进水口的部分直到进口流道管体出水口由扁平椭圆形管道逐渐过渡到圆形管道。一种喷水推进系统,包括至少一组吸入式进口流道及推进泵,吸入式进口流道应用上述的用于喷水推进的边界层吸入式变截面进口流道,推进泵设置在进口流道管体出水口一端内腔中。本发明可以充分利用船底边界层流体,且不易发生叶轮空泡汽蚀等风险,适用于高速船,相比于传统喷水推进方式,可以达到更高的航速。


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    Title :

    Boundary layer suction type variable cross-section inlet flow channel for water jet propulsion and propulsion system of boundary layer suction type variable cross-section inlet flow channel


    Additional title:

    一种用于喷水推进的边界层吸入式变截面进口流道及其推进系统


    Contributors:
    ZHANG HENG (author) / CAI YOULIN (author) / GENG HAOHAN (author) / QIU JITAO (author) / LI NING (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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