Shaft system of wind generating set and wind generating set
A wind turbine and shafting technology, applied in wind turbines, wind energy power generation, engines, etc., can solve problems such as optimization of tapered roller bearings
Active Publication Date: 2022-01-25
XINJIANG GOLDWIND SCI & TECH
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Problems solved by technology
However, the industry has not yet optimized the specific settings of tapered roller bearings
Method used
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[0020] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0021] The embodiment of the present invention provides a wind turbine shaft system, please refer to figure 1 and figure 2 , including a fixed shaft 1 and a rotating shaft 2 sleeved on the radially outer side of the fixed shaft 1, the fixed shaft 1 is connected to the fixed part of the wind turbine, the rotating shaft 2 is connected to the hub 4, and the fixed shaft 1 and the rotating shaft 2 pass through the axially distributed The first bearing 5 and the second bearing 6 are connected, the first bearing 5 is close to the center of the hub 4, the second bearing 6 is away from the center of the hub 4, and both the first bearing 5 and the second bearing 6 are tapered roller bearings. Wherein, the fixed part of the wind p...
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The invention provides a shaft system of a wind generating set and the wind generating set. The shaft system of the wind generating set comprises a fixed shaft and a rotating shaft sleeving the radial outer side of the fixed shaft, wherein the fixed shaft is connected with a fixed part of the wind generating set; the rotating shaft is connected with a hub; the fixed shaft and the rotating shaft are connected through a first bearing and a second bearing which are axially distributed; the first bearing is close to the center of the hub; the second bearing is far away from the center of the hub;the first bearing and the second bearing are both tapered roller bearings; and the contact angle of the second bearing is 18-26 degrees. By the adoption of the structure, the second bearing mainly bears the axial force of the hub on a fan base, when the second bearing is within the range, the second bearing can better bear the axial force, the load bearing capacity of the shaft system of the wind generating set is improved, compared with other contact angles, the second bearing can achieve the same effect under the condition that the size is smaller, the material cost of the second bearing is effectively reduced, and therefore the overall cost of the shaft system of the wind generating set is reduced.
Description
technical field [0001] The invention relates to the technical field of wind power generation, in particular to a shaft system of a wind power generator set and a wind power generator set. Background technique [0002] With the vigorous development of wind power generation, the power generation of wind turbines is gradually increasing, and the load it receives is also gradually increasing. The bearing structure of wind turbines needs to be able to withstand greater loads to complete the power generation of wind turbines. need. [0003] The bearing structure of the wind turbine includes an upwind bearing and a downwind bearing, so that the hub can rotate relative to the fan base to drive the generator to generate electricity. Among them, when both the upwind bearing and the downwind bearing adopt tapered roller bearings, the overall load bearing capacity of the bearing structure is relatively large. However, the industry has not yet optimized the specific settings of tapered...
Claims
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IPC IPC(8): F03D80/70
CPCF03D80/70Y02E10/72
Inventor 马加伟李会勋俱英翠
Owner XINJIANG GOLDWIND SCI & TECH