Propulsion device with outboard waterjet for marine vehicles, which comprises a nacelle (2) which at its interior houses a propeller (3) constituted by a pump (11) actuatable for generating a flow offluid through the nacelle (2) according to an outflow sense (VF). The nacelle (2) comprises: a front dynamic intake (12) having passage sections substantially increasing according to the aforesaid outflow sense (VF), in a manner such to cause a slowing of the local speed of the fluid and a pressure rise; a rear discharge nozzle (14) having passage sections substantially decreasing in the outflow sense (VF) of the fluid, in a manner such to cause an increase of the local speed of the fluid and a pressure decrease, creating a propulsive thrust jet at the outlet of the discharge nozzle (14).
一种用于海上运载工具的利用舷外喷水的推进装置,该推进装置包括短舱(2),该短舱(2)在其内部容纳有由泵(11)构成的螺旋桨(3),该泵(11)能够致动成用于根据流出取向(VF)而产生通过短舱(2)的流体流。短舱(2)包括:前部动态进口(12),该前部动态进口(12)具有根据前述流出取向(VF)而基本上逐渐增大的通路截面,使得引起流体的局部速度的减慢和压力上升;后部排放喷嘴(14),该后部排放喷嘴(14)具有沿流体的流出取向(VF)基本上逐渐减小的通路截面,使得引起流体的局部速度的增加和压力减小,从而在排放喷嘴(14)处产生推进推力喷射。
PROPULSION DEVICE WITH OUTBOARD WATERJET FOR MARINE VEHICLES
用于海上运载工具的利用舷外喷水的推进装置
2021-03-16
Patent
Elektronische Ressource
Chinesisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
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