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Wind power tower connector looseness detection method and detection device

A loosening degree and detection method technology, applied in the direction of measuring device, mechanical component testing, machine/structural component testing, etc., can solve the problems of long detection period, tower collapse, bolt fracture, etc., to achieve the significance of disaster prevention and mitigation, The effect of reducing collapse accidents and improving maintenance efficiency

Inactive Publication Date: 2019-06-28
INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Wind power tower connector looseness detection method and detection device
  • Wind power tower connector looseness detection method and detection device
  • Wind power tower connector looseness detection method and detection device

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Embodiment Construction

[0030] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts.

[0031] In addition, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustration purposes and are not necessarily drawn to scale.

[0032] Unless the context clearly requires, throughout the specification and claims, "comprises", "comprises" and similar words should be interpreted in an inclusive sense rather than an exclusive or exhaustive meaning; that is, "including but not limited to" meaning.

[0033] In the description of the present invention, it should be understood that the terms "first", "second" and so on are used for descriptive purposes only, and cannot be interpreted a...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 何先龙贾行建佘天莉
Owner INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
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