The vehicle-mounted multi-duct underwater propeller comprises a pipe body and a rotor, and a first duct and a second duct which are communicated with each other are arranged in the pipe body; in the direction from the first duct to the second duct, the inner diameter of the first duct is gradually increased from the end, away from the second duct, of the first duct to the end, close to the second duct, of the first duct; the rotor is rotationally arranged in the water inlet end of the second duct. By additionally arranging the first duct and the second duct, water flow is guided to be sprayed out from a specific outlet, and it is guaranteed that the propeller can be applied to a vehicle. The inner diameter of the first duct is gradually increased from the end away from the second duct to the end close to the second duct, so that water flow is gradually decelerated, the inlet pressure of the rotor is increased, and the rotor is assisted to avoid cavitation. And by reducing the chord length, reducing the load of a low-pressure area, unloading the low-pressure area of the rotor and increasing the pressure of the low-pressure area, the cavitation phenomenon generated when the pressure is lower than medium saturated vapor pressure is avoided, and the working efficiency of the propeller is improved.

    本发明公开一种车载式多涵道水下推进器,包括管体和转子,管体内部设置有相互导通的第一涵道和第二涵道;自第一涵道朝向第二涵道的方向,第一涵道的内径自其背离第二涵道的一端朝靠近第二涵道的一端逐渐变大;转子转动设置在第二涵道入水端内部。本发明通过增加第一涵道和第二涵道结构,引导水流从特定出口喷出,保证推进器可应用在车辆中。本发明第一涵道的内径自其背离第二涵道的一端朝靠近第二涵道的一端逐渐变大,使水流逐渐减速提高转子入口压力,辅助转子避免空化发生。并通过降低弦长,减少低压区负载,对转子低压区进行卸载,提高低压区压力,避免压力低于介质饱和蒸汽压产生空化现象,提高推进器工作效率。


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    Title :

    Vehicle-mounted multi-duct underwater propeller


    Additional title:

    一种车载式多涵道水下推进器


    Contributors:
    ZHANG MINGE (author) / WANG HAIXU (author) / WANG CHANGQIANG (author) / WU JIANGUO (author) / WANG XIAOMING (author) / WEN JIAQI (author) / YANG CANLIN (author)

    Publication date :

    2025-02-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B60F VEHICLES FOR USE BOTH ON RAIL AND ON ROAD , Fahrzeuge für den Verkehr sowohl auf Schienen als auch auf Straßen



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