Lubrication method and device for pitch ring gear of wind turbine
A wind turbine and ring gear technology, which is applied in the monitoring of wind turbines, wind power generation, wind turbines, etc., can solve the problem of small pitch range, small movement of the inner and outer rings of the pitch ring gear, and insufficient lubrication of the pitch ring gear And other issues
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Embodiment 1
[0043] see figure 1 , this embodiment discloses a method for lubricating a pitch ring gear of a wind turbine, and the method specifically includes the following steps:
[0044] Step S101: within a first preset period, monitor the position angle of each blade in the wind turbine in real time, and calculate the average blade position angle of the wind turbine in real time;
[0045] Specifically, the device for real-time monitoring of the position and angle of each blade is an angle value encoder or any other device that can realize real-time monitoring of the position and angle of the blades. Taking a wind turbine with three blades as an example, the three blades of the wind turbine are respectively called blade 1, blade 2, and blade 3. Similarly, three blades will have three blade position angle values, respectively Blade 1 position angle θ1, blade 2 position angle θ2, blade 3 position angle θ3. Normally, the position angles of the three blades of the wind turbine are basical...
Embodiment 2
[0062] see figure 2 , this embodiment discloses a method for lubricating the pitch ring gear of a wind turbine. On the basis of Embodiment 1, in step S203: when the angle difference calculated in the first preset period is continuously smaller than the preset angle θ , after judging the current operating state of the wind turbine, it also includes:
[0063] Step S205: If the current operating state of the wind turbine is in the standby state, judge whether there is a fault in the wind turbine; if there is no fault, then lubricate the pitch ring gear according to the preset second lubrication rule .
[0064] Specifically, according to the preset second lubrication rule, the specific execution process of lubricating the pitch ring gear is: the unit controls the pitch drive blade to complete a cycle of "stop position-pitch operation minimum angle-stop position" Operation, so that the pitch ring gear is fully lubricated.
[0065] Preferably, after lubricating the pitch ring ge...
Embodiment 3
[0069] see image 3 , this embodiment discloses a method for lubricating the pitch ring gear of a wind turbine. On the basis of Embodiment 1, if the current operating state of the wind turbine is in the power generation state, it is judged whether the real-time wind speed of the wind turbine is less than Preset wind speed; if less than, then according to the preset first lubrication rule, lubricating the pitch ring gear includes the following steps:
[0070] Step S304: If the current operating state of the wind turbine is in the power generation state, then judge whether the real-time wind speed of the wind turbine is lower than the preset wind speed; if yes, execute step S305; otherwise, execute step S306;
[0071] Step S305: Lubricate the pitch ring gear according to the preset first lubrication rule;
[0072] Step S306: When it is judged that the real-time wind speed of the wind turbine is greater than the preset wind speed, within the second preset period, continue to mon...
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