Variable pitch bearing waste oil collection device and offshore wind turbine adopting same

Abstract

The invention discloses a variable pitch bearing waste oil collection device and an offshore wind turbine adopting the variable pitch bearing waste oil collection device. The variable pitch bearing waste oil collection device comprises a waste oil collection bottle and a connector. The connector is connected with a variable pitch bearing. The variable pitch bearing waste oil collection device is characterized in that the axis of the waste oil collection bottle is collinear with the circle center of the variable pitch bearing, a piston is arranged in the waste oil collection bottle, one end of the waste oil collection bottle is provided with a connection portion, the connection portion is in threaded connection with the connector, the other end of the waste oil collection bottle is provided with a rear cover, the rear cover is detachably connected with the waste oil collection bottle, and the middle of the rear cover is provided with an air exhaust hole. The variable pitch bearing waste oil collection device has the beneficial effects that a 90-degree connector is omitted due to the fact that the axis of the waste oil collection bottle is collinear with the circle center of the variable pitch bearing, waste oil directly flows into the waste oil collection bottle when collected, the waste oil collection efficiency is greatly improved, the variable pitch bearing is prevented from being damaged, and the service life of the variable pitch bearing is prolonged.

Description

technical field [0001] The invention relates to the field of offshore wind power generators, in particular to a device for collecting waste oil of variable pitch bearings and an offshore wind power generator using the same. Background technique [0002] When the wind turbine is in normal operation, the blade angle is in the process of dynamic adjustment, and the pitch bearing needs reliable lubrication to ensure the normal operation of the pitch bearing. [0003] The pitch bearing waste oil collection bottle is designed on the outer ring of the pitch bearing of the general wind turbine, which is responsible for collecting the waste oil discharged from the inside of the pitch bearing. The newly added bearing grease can enter the inside of the pitch bearing, but Such as figure 1 As shown in the figure, the waste oil collection bottle 2 is connected to the pitch bearing 1 through the connector 3, wherein the connector is at a 90-degree angle, the axis of the existing waste oil...

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Problems solved by technology

[0003] The pitch bearing waste oil collection bottle is designed on the outer ring of the pitch bearing of the general wind turbine, which is responsible for collecting the waste oil discharged from the inside of the pitch bearing. The newly added bearing grease can enter the inside of the pitch bearing, but like figure 1 As shown in the figure, the waste oil collection bottle 2 is connected to the pitch bearing 1 through the connector 3, wherein the connector is at a 90-degree angle, the axis of the existing waste oil collection bottle is tangent to the outer ring of the pitch bearing, and the waste oil collection The connection between the bottle and the pitch bearing is a corner structure. Due to the high flow resistance of viscous grease, it has to go through a 90-degree corner to enter the waste oil collection bottle. At this time, it is difficult for the waste oil collection bottle to collect waste oil. Most of them are base thin oils separated from grease. The waste oil collection effect is not good. After long-term operation, the soap base inside the grease is separated and adheres to the bearing raceway and balls, which makes the pitch bearing wear and waste oil is collected. The effect is poor; and because the waste oil cannot be discharged and new grease is continuously added to the pitch bearing, a large amount of grease overflows from the oil seal and damages the oil seal

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