The invention discloses a sealed rim propeller or generator, which comprises a stator and a rotor; the rotor is movably connected in end covers on the two sides of a shell through a bearing, and the stator is fixed on the shell and corresponds to the rotor; a rotating shaft in the rotor is of a hollow structure, and blades are fixed on the inner side; a sealing assembly is arranged on the side of the 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 is of a ring 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 gap is formed between the convex 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 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 sealed rim propeller or generator which is good in sealing performance, low in friction coefficient and high in energy conversion rate by utilizing magnetofluid sealing.
本发明公开了一种密封轮缘推进器或发电机,包括有定子及转子,转子通过轴承活动连接在壳体两侧的端盖中,所述定子固定在壳体上与转子相对应;转子中的转轴呈中空结构,内侧固定有桨叶;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;凸极顶部置于凹槽内,并与凹槽之间形成间隙;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、能量转化率高的密封轮缘推进器或发电机。
Sealed rim propeller or generator
一种密封轮缘推进器或发电机
2021-05-28
Patent
Electronic Resource
Chinese