The invention relates to a ship oar front energy-saving device and a design method thereof, and the device comprises a circumferential guide blade which is a part of a cylinder surrounding the tail part of a ship, and the central angle corresponding to the circumferential guide blade is 0-180 degrees; one end of each radial guide vane is connected with the inner wall of the circumferential guide vane, and the other end of each radial guide vane is connected with the stern of the ship; for a right-handed propeller, the number of the left side blades is larger than that of the right side blades, the distribution range of the left side blades is larger than that of the right side blades, and for a left-handed propeller, the number of the right side blades is larger than that of the left side blades. The distribution range of the right blades is larger than that of the left blades. According to the energy-saving device in front of the ship propeller, the water flow direction in front of the propeller can be more effectively improved, so that pre-rotational flow opposite to the propeller in direction is formed, and the propulsion of the propeller is improved.
本发明涉及一种船舶桨前节能装置及其设计方法,其中装置包括:周向导叶片,周向导叶片为环绕船舶的尾部的圆筒形的一部分,其所对应的圆心角为0°—180°;多个径向导叶片,每个径向导叶片一端连接周向导向片的内壁,另一端连接船舶的船尾;径向导叶片与流经该径向导叶片的尾流之间的夹角为攻角,对于右旋螺旋桨,左侧叶片的数量大于右侧叶片的数量,左侧叶片的分布范围大于右侧叶片的分布范围,对左旋螺旋桨,右侧叶片的数量大于左侧叶片的数量,右侧叶片的分布范围大于左侧叶片的分布范围。本发明的船舶桨前节能装置可更有效地改善螺旋桨前方的水流方向,使其形成与螺旋桨方向相反的预旋流,提高螺旋桨的推进。
Energy-saving device in front of ship propeller and design method of energy-saving device
一种船舶桨前节能装置及其设计方法
2025-05-13
Patent
Electronic Resource
Chinese
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