Yaw brake device of wind power generation hydraulic system

Abstract

The invention discloses a yaw brake device of a wind power generation hydraulic system, which is applied to the technical field of wind power generation. The yaw brake device comprises an oil pump and an oil cylinder set connected with an oil pump pipeline, wherein the oil cylinder set is connected with an outside oil tank pipeline through a first electromagnetic valve and a first overflow valve in turn; oil cylinders are connected with the outside oil tank pipeline through a second electromagnetic valve; overflow branches connected with the outside oil tank pipeline through a second overflow valve are also arranged on the pipeline between the oil pump and the oil cylinder set; and the oil cylinder set consists of six oil cylinders which are connected in series. In the invention, the first electromagnetic valve is adopted, so that the hydraulic system realizes the yaw of a windmill generator under a backpressure condition, so that working energy consumption is reduced and working efficiency is improved; meanwhile, a throttling valve is adopted to control the pressure and flow rate of the hydraulic oil in a hydraulic pipeline, so that the normal and stable yaw brake of the hydraulic system is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and relates to a wind power generation device, in particular to a yaw braking device of a wind power generation hydraulic system. Background technique [0002] The hydraulic braking device of the wind turbine mainly includes a main shaft braking device and a yaw braking device. [0003] When the hydraulic system of the yaw brake brake is braking, the hydraulic system failure is often caused by the hydraulic oil pressure in the hydraulic system pipeline, or the hydraulic oil rate of the hydraulic oil to the main shaft brake cylinder is not uniform, resulting in braking force. Excessive or insufficient phenomena. [0004] It is necessary to provide a yaw brake device for the hydraulic system of wind power generation, so that the hydraulic control system can reduce the work energy consumption and improve the work efficiency, and the pressure and flow rate of the hydraulic oil in the p...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a yaw braking device for the hydraulic system of wind power generation, so that the hydraulic control system can realize normal and stable yaw braking of the hydraulic control system while reducing work energy consumption and improving work efficiency, thereby Overcome the defects of hydraulic system failure or uneven braking force in the prior art

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