Weathervane zero position correction device

Abstract

The invention discloses a weathervane zero position correction device, which comprises a weathervane angle correction part, a spindle angle correction part and an angle adjustment part, wherein the weathervane angle correction part is arranged outside a testing device and is connected with the weathervane on the testing device; the weathervane angle correction part is used for adjusting the angle of the weathervane; the spindle angle correction part is arranged on the spindle inside the testing device; the spindle angle correction part is used for measuring the angle of the spindle; and the angle adjustment part is respectively connected with the weathervane and the spindle angle correction part. Through the angle adjustment part, the angle of the weathervane can be adjusted, the zero graduation line of the weathervane is parallel with the spindle, zero graduation line errors of the weathervane are quantified, the weathervane zero position correction speed and the accuracy are improved, and the inaccurate yaw wind alignment degree of a wind turbine can be reduced.

Description

technical field [0001] The invention relates to a correction device, in particular to a wind vane zero position correction device. Background technique [0002] The inaccurate wind turbine yaw will have a significant impact on the power generation of the wind turbine, directly affecting the economic benefits of the wind farm. The main reason for the unit's inaccurate alignment with the wind is that the zero direction collected by the sensor located on the cabin to measure and collect wind direction is not the actual direction of the nose. At present, in the maintenance and installation, the zero position calibration of the wind vane adopts the observation method, relying on the intuitive feeling of the maintenance personnel to make the direction pointed by the zero scale of the wind vane parallel to the direction of the aircraft nose. Due to the difference in sensory perception of each person, it is easy to cause calibration errors, so that the sensor collects The zero dire...

AI Technical Summary

Problems solved by technology

[0006] Since the wind vane needs to align the zero scale position on the base of the wind vane with the direction of the nose, the zero alignment operation is generally completed by the maintenance staff visually observing the zero position of the wind vane and the position of the bracket. From the perspective of visual effects, the wind vane of the cross-bar bracket has For square features, the zero-alignment error is generally around 5-10°, while the vertical rod fixed wind vane is difficult to confirm because the reference point is on the cylindrical vertical rod. It is difficult to find the error with the naked eye, which will cause zero-alignment errors. The error is large, resulting in an increase in measurement error

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