Intelligent lubrication system for heavy-duty bearings of wind turbines

Abstract

An intelligent lubricating system for a heavy-duty bearing of a wind power generating set belongs to the technical field of wind turbines. Installed on the base of the engine room, it includes a trigger device and an oil suction and injection pipeline connected to the main bearing. The trigger device includes an action connecting rod and a trigger block. The trigger block is arranged on the outer periphery of the main shaft. One end of the action link is a free end for It is triggered by contact with the trigger block, and the other end is connected to the oil injector. The oil suction and oil injection pipeline includes an oil suction pump, an oil suction filter, a grease storage tank, an oil injector and an oil injection filter connected in sequence. The oil suction pump is connected to the main bearing on the main shaft Oil outlet, the oil outlet pipe of the oil injection filter is connected to the oil injection port of the main bearing to form a lubricating oil circulation; through the rotation of the main shaft, the action connecting rod contacts the trigger block, driving the action connecting rod to reciprocate, and the oil suction pump sucks the lubricating oil flowing out of the main bearing , After being filtered by the oil suction filter, it is stored in the grease storage tank, and then filtered by the oil injector and the oil injection filter, and then returned to the oil injection port of the main bearing for supplementary lubrication. The invention can realize the circulation lubrication of the bearing and improve the service life of the main bearing.

Description

technical field [0001] The invention belongs to the technical field of wind turbines, and in particular relates to an intelligent lubrication system for heavy-duty bearings of wind power generating sets. Background technique [0002] According to the statistics of relevant enterprises, the 1.5MW doubly-fed wind turbines of a certain domestic new energy company experienced phenomena such as wear of the main bearing and rearward movement of the transmission chain within 2-3 years of grid-connected operation. This phenomenon has not attracted enough attention from the owner. After several years of operation, major equipment failures such as main bearing roller falling off and bearing outer ring breaking occurred, resulting in the shutdown of the wind turbine. [0003] To repair such faults, it is necessary to hire a crane to replace the transmission chain assembly in the air. The on-site construction is affected by many aspects such as weather, environment, and personnel qualit...

AI Technical Summary

Problems solved by technology

If the grease is not cleaned and replaced in this state, the hard metal particles are mixed in the running bearing, and the rollers press the hard particles into the raceway, causing the surface of the raceway to bulge, which in turn causes more metal particles to fall off. Long-term operation will eventually cause the contact surface of the roller raceway to wear

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