High-altitude oil exchange system for gearbox of wind driven generator and control method of high-altitude oil exchange system

Abstract

The invention discloses a high-altitude oil exchange system for a gearbox of a wind driven generator and a control method of the high-altitude oil exchange system. The system comprises a waste oil discharging module, an oil flushing module, an oil cleaning module, a fresh oil module, an auxiliary power system and an electric control system. A four-step oil exchange manner is adopted, and the four steps include waste oil discharging, flushing, cleaning and fresh oil injecting, so that the cleanliness of an oil product obtained after oil exchange of the gearbox is thoroughly ensured, and a correct oil exchange manner is provided for the oil exchange work of the fan gearbox. The auxiliary power system is adopted so that pressurizing or vacuumizing can be conducted on an oil tank according to different working conditions, auxiliary oil exchange is conducted, and the oil exchange efficiency is improved, so that the oil exchange time is saved. A PLC processor is used for automatic control, multiple processes are controlled in a linkage manner, and one-key operation is adopted, so that the misoperation problem is eradicated; and meanwhile a set of completely-independent manual control device is arranged, so that manual control can be conducted in emergency, and the safety of the whole system is improved.

Description

technical field [0001] The invention relates to the after-service field of wind power generation equipment, in particular to a high-altitude oil change system for a wind power generator gearbox and a control method thereof. Background technique [0002] The gearbox is part of the main transmission chain in the fan and is a key component. Its purpose is to transmit the kinetic energy generated by the wind wheel under the action of wind force to the generator, and increase the speed of the output shaft to the speed required by the generator to generate electricity through the speed-up effect of the gear pair of the gearbox. The cleanliness of the gearbox lubricating oil has a crucial impact on the efficiency and life of the gearbox. [0003] At present, manual oil change is mostly used for the replacement of lubricating oil in gearboxes, that is, maintenance personnel go up and down the fan several times, transport waste oil and new oil, and finally inject new oil into the ge...

AI Technical Summary

Problems solved by technology

[0007] 3. "Modular wind turbine gearbox oil change system and its oil change method" (Patent No.: 201020205838.1), the patent is only the "wind turbine gearbox oil change system and its oil change anti-leakage safety protection method" (Patent No.: 201210248010.8) This patented modular design does not add new things, it can only drain waste oil and fill new oil, without cleaning and flushing the gearbox; draining waste oil and filling new oil does not use auxiliary The power system only relies on the ability of the gear pump, which is difficult to realize in practice

[0008] 4. "An oil change device for fan gearbox" (patent number: 201220705364.6), this patent can only discharge waste oil and add new oil, without washing and cleaning the gearbox, the cleanliness of the gearbox oil is still not enough Guaranteed; the oil filter system is a separate filter system for the new oil tank, including motors, pumps, etc.

[0009] 5. "Lubricating Oil Replacement Device for Main Gearbox of Wind Power Generating Set" (Patent No.: 200920224175.5), this patent can only discharge waste oil and add new oil, without flushing and cleaning the gearbox, the quality of the oil after oil change is not good Guaranteed; In addition, the oil change device does not filter the lubricating oil, does not use the auxiliary power system to assist in draining waste oil and filling new oil, but simply drains waste oil and fills new oil

[0010] Through search, it is found that the above-mentioned method of using the oil change system for oil change operation is mostly a two-step oil change, that is, only draining the waste oil and injecting new oil immediately, without flushing and cleaning the gear box, and the old oil remaining in the gear box The oil problem is still not resolved, and the cleanliness of the oil is still not guaranteed

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