The invention provides an offset type front prewhirl guide wheel and a ship. The offset type front prewhirl guide wheel comprises an arc-shaped guide pipe, a connecting piece and a guide vane part. The connecting piece is used for connecting the arc-shaped guide pipe and a tail of a ship body, and the guide vane part is connected to the arc-shaped guide pipe and the tail of the ship body. A broadside, corresponding to a rotating direction of a propeller, of the ship body is defined as a first broadside, and the other side is defined as a second broadside. An end surface of the arc-shaped guidepipe corresponding to a first broadside part is higher than the end surface of the arc-shaped guide pipe corresponding to a second broadside part. The guide vane part on the second broadside is radially distributed on an inner side and an outer side of the arc-shaped guide pipe, a prewhirl effect of a water flow can be effectively enhanced, and propulsion efficiency of the ship is improved. By means of an asymmetric design mode of removing parts of the arc-shaped guide pipe on the first broadside and through setting a longitudinal inclination angle and a transverse inclination angle of the arc-shaped guide pipe, resistance caused by the arc-shaped guide pipe on the first broadside is effectively reduced, and a problem that the propelling efficiency of the ship body is low due to guide pipe resistance is solved. Meanwhile, a working load of a paddle at the position is reduced, and a pulsating kinetic energy level is decreased.
本发明提供一种偏置式前置预旋导轮及船舶,包括弧形导管、连接件和导叶部。连接件用于连接弧形导管与船体尾部,导叶部则连接于弧形导管和船体尾部。定义船体在螺旋桨旋向对应的舷侧为第一舷侧,另一侧为第二舷侧。对应第一舷侧部分的弧形导管的端面设置为高于对应第二舷侧部分的弧形导管的端面。第二舷侧的导叶部呈放射形分布弧形导管的内侧和外侧,可有效加强水流的预旋作用,提高船的推进效率。通过去除第一舷侧部分弧形导管的不对称设计方式,并设置弧形导管纵倾和横倾角度,有效减小第一舷侧处弧形导管引起的阻力,解决了船体由于导管阻力导致推进效率低的问题。同时,减小了该处桨叶工作负荷,降低了脉动力能级。
Offset type front prewhirl guide wheel and ship
一种偏置式前置预旋导轮及船舶
14.08.2020
Patent
Elektronische Ressource
Chinesisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
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