The stern structure of the water displacement type ship comprises a ship body provided with a propeller and a rudder, the propeller and the rudder are both arranged, the part, located above the propeller, of the bottom face of the ship body is sunken upwards to form a tunnel, and the tunnel extends from the front side of the propeller to the rear side of the propeller. The tunnel is arranged on the bottom surface of the ship body right above the propeller, so that the distance between the blade tip of the propeller and the bottom surface of the ship body can be increased, the mounting position of the propeller is allowed to move upwards, the diameter of the propeller is increased, and the whole stern of the ship body does not need to be lifted. By increasing the distance between the blade tip of the propeller and the bottom surface of the ship body, ship body vibration induced by the propeller can be reduced, and the sailing comfort and safety of the ship are improved; and the wake peak value of the propeller disc surface can be reduced, the wake uniformity of the working area of the propeller is improved, and the propelling efficiency of the propeller is improved, so that the rapidity of a ship can be improved. In addition, compared with a multi-propeller ship, the single-propeller ship is low in manufacturing cost and maintenance cost, and maintenance is more convenient.
本发明涉及一种排水量型船舶的船尾结构,包括装有螺旋桨和舵的船体,螺旋桨与舵均设置一个,船体底面位于螺旋桨上方的部分向上凹陷形成隧道,隧道从螺旋桨的前侧延伸至后侧。其在螺旋桨正上方的船体底面设置隧道,可以增大螺旋桨叶稍与船体底面之间的距离,从而允许螺旋桨的安装位置上移,以及增大螺旋桨直径,不需要将船体的船尾整体抬高。而增加螺旋桨叶稍与船体底面的距离,可以减少螺旋桨诱导发生的船体振动,改善船舶的航行舒适性和安全性;还可以减小桨盘面的伴流峰值,改善螺旋桨工作区域伴流的均匀度,提高螺旋桨的推进效率,从而可以提高船舶的快速性。此外,相对于多桨船,单桨船造价与维护成本都较低,维护也更加便利。
Stern structure of displacement type ship
一种排水量型船舶的船尾结构
2023-06-02
Patent
Electronic Resource
Chinese