The invention discloses a sealed pod propeller comprising a shell and a rotating shaft, the rotating shaft is movably connected into end covers on the two sides of the shell through bearings, a driving device installed in the shell provides power for rotation, a propeller is fixedly installed at the output end of the rotating shaft, and a sealing assembly is arranged on the side edge of a bearing; the sealing assembly comprises a concave pole and a convex pole, and one of the concave pole and the convex pole is fixed on the rotating shaft; the concave pole has an annular structure; the outer side of the concave pole is provided with a permanent magnet, and the inner side of the concave pole is provided with a groove; the top of the convex pole is arranged in the groove, and a U-shaped or V-shaped gap is formed between the convex pole pole and the groove; the gap is filled with magnetic fluid; the magnetic fluid is accumulated at the bottom of the groove under the action of a magnetic field provided by the magnetic pole on the inner side of the permanent magnet, and a U-shaped or V-shaped sealing belt is formed between the convex pole pole and the concave pole by utilizing the principle that the fluid is in static pressure balance in the U-shaped pipe. The invention provides a high-performance sealed pod propeller which is good in sealing performance and low in friction coefficient by utilizing magnetofluid sealing.
本发明公开了一种密封吊舱推进器,包括有壳体及转轴,所述转轴通过轴承活动连接在壳体两侧的端盖中,由安装在壳体中的驱动装置提供动力旋转,转轴输出端固定安装有螺旋桨,轴承侧边设有密封组件;密封组件包括有凹极和凸极,凹极和凸极其中之一固定在转轴上;凹极呈环状结构,外侧设有永磁体,内侧设有凹槽;所述凸极顶部置于凹槽内,并与凹槽之间形成有“U”型或“V”型间隙;所述间隙内填充磁流体;所述磁流体在永磁体内侧磁极提供的磁场作用下积聚在凹槽底部,利用流体在“U”型管中静压平衡的原理,在凸极与凹极之间形成“U”型或“V”型的密封带。本发明利用磁流体密封提供了一种密封性能好、摩擦系数低的高性能的密封吊舱推进器。
Sealed pod propeller
密封吊舱推进器
2021-05-25
Patent
Electronic Resource
Chinese