The propeller is provided with a main shaft, a propeller hub, a flow guide cap and a plurality of propeller blades evenly distributed on the surface of the propeller hub in the circumferential direction, and a plurality of first vortex generators and a plurality of second vortex generators are distributed on the blade backs of the propeller blades at intervals along the front edges of the propeller blades. Wherein the first vortex generator is located at the position 5%-10% of the blade width away from the front edge of the blade, and the second vortex generator is located at the position 20%-30% of the blade width away from the front edge of the blade; the first vortex generator comprises a bowl-shaped bulge, the bowl opening of the bowl-shaped bulge is connected with the back surface of the paddle, and the bottom of the bowl-shaped bulge is provided with a hemispherical concave surface; the second vortex generator is provided with a streamline incident flow top face used for blocking flowing of incoming flow. The vortex generators are arranged at the front edges of the blades to disturb incoming flow, so that the problem of cavitation of the propeller can be inhibited and weakened.
本发明公开了一种带有涡流发生器的螺旋桨,具有主轴、桨毂、导流帽以及在桨毂表面周向均布的若干桨叶,在桨叶叶背上,沿着桨叶前缘间隔分布有若干第一涡流发生器和若干第二涡流发生器,其中第一涡流发生器位于距离桨叶前缘5%~10%叶片宽度的位置,第二涡流发生器位于距离桨叶前缘20%~30%叶片宽度的位置;第一涡流发生器包括碗型凸起,碗型凸起碗口与桨叶叶背表面相连接,碗型凸起底部具有半球内凹面;第二涡流发生器具有用于阻碍来流流动的流线型迎流顶面。本发明通过在桨叶前缘位置设置涡流发生器对来流进行扰动,可抑制、削弱螺旋桨空化的问题。
Propeller with vortex generator
一种带有涡流发生器的螺旋桨
2024-01-19
Patent
Elektronische Ressource
Chinesisch
IPC: | B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
NTIS | 1984
|ASYMMETRIC WAKE GENERATING VORTEX GENERATOR FOR REDUCING PROPELLER NOISE AND VIBRATION
Europäisches Patentamt | 2016
|Propeller : hull vortex cavitation
TIBKAT | 1971
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