The invention discloses a sealed rim propeller which comprises a rotating shaft, a shell, a stator and a rotor, the rotating shaft is movably connected in the shell through a bearing, and the stator is fixed on the shell and corresponds to the rotor; the rotating shaft is of a hollow and trumpet-shaped structure and comprises a large end part, a small end part and a gradual change part; a propeller is fixed to the large end, and a rotor is fixed to the gradual change part. A sealing assembly is arranged on the side edge of the bearing and comprises a concave pole and a convex pole, and one of the concave pole and the convex pole is fixed to a rotating shaft. Permanent magnets are arranged on the outer sides of the concave poles, and grooves are formed in the inner sides; the tops of the salient poles are arranged in the grooves, and U-shaped gaps are formed between the salient poles and the grooves; magnetic fluid is filled in the gap; 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 sealing belt is formed between the salient pole and the concave pole according to the principle that fluid is in static pressure balance in the U-shaped pipe. The sealed rim propeller is low in friction coefficient and high in propelling efficiency.
本发明公开了一种密封轮缘推进器,包括有转轴、壳体、定子及转子,转轴通过轴承活动连接在壳体中,定子固定在壳体上,与转子相对应;转轴呈中空、喇叭状结构,包括有大端部、小端部及渐变部;大端部固定有螺旋桨,渐变部固定有转子;轴承侧边设有密封组件,包括有凹极和凸极,其中之一固定在旋转的转轴上;凹极外侧设有永磁体,内侧设有凹槽;凸极顶部置于凹槽内,并与凹槽之间形成U型间隙;间隙内填充磁流体;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,并利用流体在U型管中静压平衡的原理,在凸极与凹极之间形成U型的密封带。本发明提供了一种摩擦系数低、推进效率密高的密封轮缘推进器。
Sealed rim propeller
一种密封轮缘推进器
2021-05-07
Patent
Electronic Resource
Chinese