Device and system for monitoring blade deformation of wind power generation equipment

Abstract

The invention discloses a device for monitoring the blade deformation of wind power generation equipment. The device comprises a laser emitter arranged on the root part of the inner surface of a blade that is close to a wheel hub and used for emitting the laser to the tip of the blade along the axial direction of the blade; a light screen arranged at a measurement point on the inner surface of the blade, configured to be vertically intersected with the laser emitted by the laser emitter, used for shading the laser so as to form light spots on the light screen, and designed to deflect along the axial direction of the blade along with the deformation of the blade; a camera arranged at a predetermined distance from the light screen on the inner surface of the blade, designed not to block the laser and used for capturing a light screen image of the light spots of the laser on the light screen; and a signal processing means adapted to calculate the deformation of the blade at the measurement point based on the light screen image captured by the camera. The invention also discloses a system for monitoring the blade deformation of wind power generation equipment, and a blade.

Description

technical field [0001] The invention relates to the field of blade state monitoring, in particular to a device and system for monitoring blade deformation of wind power generation equipment. Background technique [0002] As an important renewable energy source, wind power has attracted widespread attention. The blades of wind power generation equipment are the key parts of the wind power generation unit to capture wind energy, and their health directly affects the operation of the entire wind power system. The structure and stress of the blades are quite complicated. Because the working environment of the blades is very harsh, spring, summer, autumn and winter, severe heat and cold, lightning, hail, rain, snow, sand and dust may cause damage to the blades of the fan at any time, so the blades become wind power generation equipment. the most accident-prone location. According to statistics, the accidents caused by blade damage account for about one-third of the total wind t...

AI Technical Summary

Problems solved by technology

These monitoring methods have their applicable defect types, advantages and disadvantages, and their technical requirements are relatively strict. The monitoring process is affected by the operating environment, weather conditions and other factors, and usually requires the intervention of complex testing equipment and professional analysts. In order to judge the results, it greatly increases the cost of monitoring and the difficulty of popularization

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