The invention relates to a water-jet propeller impeller with a detachable sawtooth front edge, which is characterized in that the sawtooth front edge consisting of a plurality of bulges and grooves is arranged on an impeller blade, and the sawtooth front edge can be used for adjusting the flow of an impeller guide edge under a heavy-load working condition and improving a local flow field; the effects of delaying cavitation of the impeller, improving the cavitation bubble form and improving the net positive suction head of the impeller are achieved. The range of the protrusions and the grooves on the front edges of the sawteeth is 0.05-0.2 C, and C is the chord length of the blade tip. Through the mechanism design of the detachable sawtooth front edge of the front edge of the impeller of the water-jet propeller, the front edge of the impeller can be detached and replaced conveniently, and therefore optimal performance adjustment under multiple working conditions is achieved. Under the severe cavitation working condition, the sawtooth front edge has the effect of reducing the coverage area of the cavitation of the impeller in the pump, the propeller can generate higher power under multiple working conditions, and the sailing efficiency and the maximum sailing speed of a ship are improved.

    本发明涉及涉及一种带有可拆换式锯齿前缘的喷水推进器叶轮,叶轮叶片上设有由多个凸起和凹槽组成的锯齿前缘,锯齿前缘能够实现重负荷工况下调节叶轮导边的流动,改善局部流场,实现延迟叶轮空化、改善空泡形态和提升叶轮汽蚀余量的作用。所述锯齿前缘上的多个凸起和凹槽的范围为0.05‑0.2C,C为叶梢弦长。本发明通过喷水推进器叶轮的前缘进行可拆换式锯齿前缘的机构设计,可以实现叶轮的前缘的便捷拆换,从而达到多工况下的最优化性能调节。在空泡恶劣工况,锯齿前缘的效果是减少泵内叶轮空泡的覆盖面积,多个工况下推进器均可以发出更高的功率,提高舰船的航行效率和最大航速。


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    Title :

    Water-jet propeller impeller with detachable sawtooth front edge


    Additional title:

    一种带有可拆换式锯齿前缘的喷水推进器叶轮


    Contributors:
    WANG JIANQIANG (author) / WAN CHURUI (author) / DU DONGMEI (author) / ZHOU MIN (author) / GENG HAOHAN (author) / WANG ZONGLONG (author)

    Publication date :

    2024-01-09


    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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