Bearing cooling device and wind generator comprising same
A technology of cooling device and air cooling device, which is applied in the direction of wind power engine, wind power motor combination, wind power generation, etc. It can solve the problems that it is difficult to control the temperature of each component of the bearing within the limit value and the cooling efficiency is low, so as to overcome the low cooling efficiency , enhance the cooling efficiency, increase the life of the effect
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Embodiment 1
[0081] Such as Figure 1 to Figure 3 As shown, the present invention provides a bearing cooling device, which is applied to a bearing system. The bearing system includes a bearing outer ring 1, a bearing inner ring 2 and a fixed shaft 3. The bearing outer ring 1 and the bearing inner ring 2 are coaxial, and the fixed shaft 3 It is fixed on the axial side of the bearing inner ring 2, the bearing outer ring 1 can rotate around the central axis, and the bearing inner ring 2 is stationary. The fixed shaft 3 has a ring structure, and its inner surface surrounds and forms an incompletely closed inner cavity of the fixed shaft 3, and the inner cavity of the fixed shaft 3 communicates with the inner space of the engine room and the bearing inner ring 2 respectively. The bearing cooling device includes an active cooling system, the active cooling system includes an air cooling device and a heat pipe module 4, a part of the air cooling device is located in the space inside the bearing i...
Embodiment 2
[0092] Such as Figure 4 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, and the difference is that the air cooling device also includes an air inlet pipeline 54 and a third fan device 55, and one end of the air inlet pipeline 54 communicates with the outside world. The other end communicates with the inner space of the bearing inner ring 2 and the fixed shaft 3 . As an alternative, the air cooling device can also use one or more than two air inlet pipelines 54 .
[0093] The bearing cooling device also includes an isolating device 56 installed inside the fixed shaft 3 for sealing the space inside the bearing inner ring 2 to prevent the air inside the bearing inner ring 2 from exchanging with the air outside or in the engine room. There are openings on the surface of the isolating device 56, and the air suction pipeline 51 and the air inlet pipeline 54 pass through these openings and are tightly connected with the openings.
[0094] ...
Embodiment 3
[0096] Such as Figure 5 As shown, the structure of this embodiment is basically the same as that of Embodiment 1, and the difference is that the air cooling device is a circulating air cooling system, which includes a circulating air pipeline 57, a first fan device 52, an isolation device 56 and an internal heat exchanger. switch 58. One end of the circulating air pipeline 57 is connected to the inner space of the bearing inner ring 2, and the other end is looped back from the middle, and is still connected to the inner space of the bearing inner ring 2. Preferably, it is set to be divided into two winding branch pipelines . The ends of the two branch pipelines are also connected to the inner space of the bearing inner ring 2, so the circulating air pipeline 57 forms an air circulation space with the inner space of the bearing inner ring 2 and the inner space of the fixed shaft 3. As an alternative, one or more branch lines can also be used. The gas in the circulating air ...
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