PROBLEM TO BE SOLVED: To provide a water jet propulsion ship that can reduce an influence on a surrounding environment by reducing sufficiently an exhaust gas temperature while reducing exhaust gas pressure loss and reducing signatures.SOLUTION: The water jet propulsion ship is equipped with: a flow path forming portion 2 that forms a flow path R1 through which water can be introduced from an opening portion arranged at a bottom part of a hull; a nozzle 14 that is formed so that the cross sectional area of the flow path gradually decreases toward outside in an extending direction of the flow path forming portion 2; an impeller 3 that pressure-feeds the water introduced from the opening portion; an internal combustion engine E that drives the impeller 3; a casing 50 which is provided to surround the nozzle 14 from an outer periphery side and has an ejection port 51 which opens to the outside; a stator vane 5 which can straighten a flow of water ejected from the nozzle 14; and an exhaust/flow path forming portion 15 which supplies exhaust gas G from the internal combustion engine E between the casing 50 and the nozzle 14 and flows the exhaust gas G between the nozzle 14 and the stator vane 5.SELECTED DRAWING: Figure 2

    【課題】排気ガス圧損の低減、および、低シグネチャー化を図りつつ、排気ガス温度を十分に低下させて周囲環境への影響を低減可能なウォータージェット推進船を提供する。【解決手段】ウォ—タージェット推進船は、船体の底部に配される開口部から水が導入可能な流路R1を形成する流路形成部2と、流路形成部2の延びる方向で外側に向かうに従って流路の断面積が減少するように形成されるノズル14と、開口部から導入された水を圧送するインペラ3と、インペラ3を駆動する内燃機関Eと、ノズル14を外周側から囲むように設けられるとともに外部に開口する噴出口51を有するケーシング50と、ノズル14から噴射される水流を整流可能な静翼と、内燃機関Eの排気ガスGをケーシング50とノズル14との間に供給して、排気ガスGをノズル14と静翼5との間に流入させる排気流路形成部15と、を備える。【選択図】図2


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    Title :

    WATER JET PROPULSION SHIP


    Additional title:

    ウォータージェット推進船


    Contributors:

    Publication date :

    2016-06-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein / F04F PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED , Pumpen von Arbeitsfluiden durch unmittelbare Berührung mit einem anderen Arbeitsfluid oder durch Ausnutzung der Trägheit des zu pumpenden Arbeitsfluids



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