Method and device for detecting loosening degree of connecting part of wind power generation tower

Abstract

The invention discloses a method and device for detecting the loosening degree of a connecting part of a wind power generation tower, and the method comprises the steps: setting a sensor at each of two sides of the connecting part of the wind power generation tower, and obtaining the vibration data of the wind power generation tower in a first wind speed section after the arrival of typhoon at each time, the vibration data in a second speed section and the vibration data in a third wind speed section; comparing the three pieces of obtained vibration data with the reference vibration data of the initial wind speed of the wind power generation tower in the first section, and judging the loosening degree of the connecting part of the wind power generation tower after the typhoon at each time. Therefore, the method achieves the automatic detection and recognition of the loosening degree of the connecting part of the wind power generation tower, improves the maintenance efficiency of the loosening damage of the connecting part of the wind power generation tower, reduces the collapse accidents of the wind power generation tower, and has the important significance in prevention and reduction of natural disasters.

Description

technical field [0001] The invention relates to the technical field of structure detection, in particular to a method and a detection device for detecting the looseness of a wind power tower connector. Background technique [0002] The tower body structure of a wind power tower is generally composed of multi-section tower tubes, wherein flanges are provided at both ends of each section of the tower tube, and adjacent tower tubes are fastened and connected by flange plates and bolts. Bolt loosening is a common structural damage of wind power towers. Especially under the action of typhoons, bolts are subjected to large tensile stress. Under the action of tensile stress, the bolts are gradually thinned and the nuts are gradually loosened or the bolts are broken. If not found in time , there will be a tower collapse accident. The common method at home and abroad to detect the looseness of the fastening bolts of the flange of the wind power tower is manual regular inspection and...

AI Technical Summary

Problems solved by technology

Bolt loosening is a common structural damage of wind power towers. Especially under the action of typhoons, bolts are subjected to large tensile stress. Under the action of tensile stress, the bolts are gradually thinned and the nuts are gradually loosened or the bolts are broken. If not found in time , there will be a tower collapse accident

The common method at home and abroad to detect the looseness of the fastening bolts of the flange of the wind power tower is manual regular inspection and regular maintenance. Although this method is reliable, since each wind power tower has more than 700 bolts, manual regular maintenance There are defects such as too long detection period, untimely detection of loose damage, and high detection cost

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