Jet lubrication system for wind generating set variable-pitch gears and control method thereof

Abstract

The invention provides a jet lubrication system for wind generating set variable-pitch gears and a control method thereof. The jet lubrication system comprises a lubrication pump and an electric control system; a main oil pipe of the lubrication pump is branched into multiple branch oil pipes, the multiple branch oil pipes are each connected with an oil inlet of one electromagnetic valve, and oiloutlets of the multiple electromagnetic valves are each connected with one nozzle; a pressure detection device is connected beside the main oil pipe and used for testing the pressure of the main oil pipe; and the lubrication pump, the multiple electromagnetic valves and the pressure detection device are electrically connected with the electric control system separately. The control method of the jet lubrication system for the wind generating set variable-pitch gears uses the jet lubrication system for the wind generating set variable-pitch gears. By means of the jet lubrication system for thewind generating set variable-pitch gears, the problems that an existing lubrication method for the wind generating set variable-pitch gears is poor in lubrication effect, and particularly when bladesare at the angle of 0 degree or 90 degrees, a lubrication pinion cannot deliver a lubricant to gears in a meshing state can be solved.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a jet lubricating system and a control method for pitch gears of a wind power generating set. Background technique [0002] In order to capture wind energy to the maximum extent, wind turbines need to adjust the windward angle of the blades by continuously changing the pitch. At present, there are mainly two types of pitch control systems for wind turbines: electric pitch control and hydraulic pitch control. Most of the wind turbines in China adopt electric pitch system. Electric pitch adjustment is achieved through the meshing transmission of the pitch drive output pinion and the pitch bearing ring gear to achieve blade adjustment. When the wind turbine is connected to the grid for power generation, most of the time the blades move slightly near 0 degrees (that is, the position where the pitch angle is 0 degrees) or adjust the angle within a small angle range. At...

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Problems solved by technology

[0005] In order to solve the above problems, the present invention provides a jet lubrication system and its control method for pitch gears of wind power generators, which overcomes the poor lubrication effect of existing lubrication methods for pitch gears of wind power generators, especially when the blades are at an angle of 0 degrees or 90 degrees. The problem that the lubricated pinion cannot transfer lubricant to the gears that are in mesh when

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