Hydraulic central control device for wind power generating set

Abstract

The invention relates to a hydraulic central control device for a wind power generating set. In the hydraulic central control device, an oil pressure pump arranged inside an oil tank of an oil supply unit is connected with a filter through a pipeline; the filter is respectively connected with a two-position two-way electromagnetic valve of a hydraulic variable propeller control unit and a throttle valve of a braking unit through pipelines; the two-position two-way electromagnetic valve is connected with a three-position four-way electro-hydraulic proportional valve arranged on the hydraulic variable propeller control unit through a pipeline; the three-position four-way electro-hydraulic proportional valve is connected with one side of a hydraulic cylinder arranged inside a variable propeller execution unit through a pipeline, and the other side of the hydraulic cylinder is connected with an energy accumulator arranged on the variable propeller execution unit; and the throttle value is connected with an electromagnetic directional valve, which is arranged inside the braking unit and respectively communicated with a mechanical braking execution mechanism and a yawing braking execution mechanism, through a pipeline. The hydraulic central control device has the advantages that the control device simplifies the complicated hydraulic control unit of the prior control system and ensures easier control; meanwhile, the assembly cost of the entire wind power generating set is greatly reduced.

Description

technical field [0001] The invention relates to a hydraulic control device, in particular to a hydraulic centralized control device for a wind power generating set. Background technique [0002] So far, hydraulic systems have been used in wind turbines to control devices inside wind turbines, such as high-speed shaft brake systems and yaw brake systems. Although hydraulic systems are used so frequently in wind turbines, they are all independently controlled. Although this can ensure the independence of each part of the fan, it greatly increases the cost of the hydraulic control part and makes the control very complicated. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a hydraulic centralized control device for wind power generators, the purpose of which is to use a set of hydraulic control equipment to control it, so as to reduce its production cost and simplify the control. [0004] In order to achieve t...

AI Technical Summary

Problems solved by technology

Although this can ensure the independence of each part of the fan, it greatly increases the cost of the hydraulic control part and makes the control very complicated.

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