Safe pressurizer of wind power generation hydraulic system

Abstract

The invention discloses a safe pressurizer of a wind power generation hydraulic system, which is applied to the technical field of wind power generation, and comprises an oil pump, and an accumulator connected with an oil pump pipeline; an oil inlet of a spindle brake unit and an oil inlet of a yawing brake unit are arranged on the oil pump and an accumulator pipeline in sequence; a manual pump branch connected with a first interface of an external oil tank through a manual pump pipeline, a first adjustable throttle valve, a throttle valve branch connected with a second interface of the external oil tank through a throttle valve pipeline, and a first spillover valve branch connected with the second interface of the external oil tank through a first spillover valve pipeline are arranged between the oil inlet of the yawing brake unit and the accumulator pipeline in sequence. When oil supply of the pipeline of the accumulator adopted by the safe pressurizer of the wind power generation hydraulic system is cut off, the hydraulic oil stored in the pipeline is released and flows into a spindle brake device and a yawing brake device so as to guarantee the normal work of the two devices; and when a fan is stopped for overhauling, the pressure of the accumulator can supplement the pressure loss in the system to play the role of pressurizing.

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 safety pressure maintaining device for a hydraulic system of wind power generation. 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 motor pump unit breaks down or the motor needs to be shut down intermittently, the hydraulic oil in the hydraulic system pipeline is often insufficient or unstable, which affects the normal operation of the main shaft brake device and yaw brake device; in addition, during the maintenance process In the process, the pressure in the pipeline is often reduced due to the loss of hydraulic oil in the hydraulic system, which makes the main shaft brake device and yaw brake device unable to work normally. [0004] It is necessary to provide a safety pressure maintaining device f...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a safety pressure maintaining device for the hydraulic system of wind power generation, which can ensure the safe and normal operation of the main shaft braking device and the yaw braking device, thereby overcoming the unstable oil pressure in the prior art which is easy to cause pipe failure. road fault defect

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