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Non-destructive testing method and device for wind turbine blades

A non-destructive testing, wind turbine technology, used in measurement devices, testing of machine/structural components, wind turbines, etc.

Active Publication Date: 2016-12-28
ARIANEGRP SAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] In addition, visual inspection techniques only allow the detection of defects that are visible from the outside of the blade and are large enough to be observed, that is, often in the very early stages of defects, while ultrasonic inspection techniques that can detect internal defects have long been used

Method used

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  • Non-destructive testing method and device for wind turbine blades
  • Non-destructive testing method and device for wind turbine blades
  • Non-destructive testing method and device for wind turbine blades

Examples

Experimental program
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Embodiment Construction

[0056] For example figure 1 The present method of non-destructive testing of a blade 10 of a wind turbine 100 shown above, called CND, is based on a transmission measurement technique using observations away from the blade, ie without contacting the measurement sensor.

[0057] In this document, the expression "contactless measurement" means that the sensor used to carry out the measurement does not come into physical contact with the surface of the blade under test to perform the measurement, but the support system of the sensor can be supported on the blade so as to be in contact with the surface The sensors are held at a distance.

[0058] The wind turbine blade 10 is in the shape of a buoyant streamline with a large elongation, and its outer surface 19 is geometrically defined by a series of aerodynamic profiles 11, each aerodynamic profile 11 corresponding to the upper cladding 111 and the lower cladding 112 The geometry, the upper cladding 111 and the lower cladding 112...

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PUM

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Abstract

The method CND of non-destructive testing of a wind turbine blade includes: stressing the structure of the blade through a modification of a physical characteristic of a fluid filling the hollow interior volume of the blade; observing zones to be tested of the exterior surface of the blade, with the contactless measurement of a physical parameter on points of the exterior surface of the blade; and comparing the map of the values of the physical parameter measured with a reference map. A corresponding system CND for checking the structural integrity of a wind turbine blade includes an aerothermic device for modifying the physical conditions, temperature or pressure, of a fluid filling the hollow interior volume of the blade, a device for contactless measurement of a physical parameter, temperature or dimensions, of the exterior surface of the blade, and a device for processing the measurements.

Description

technical field [0001] The invention relates to the field of wind turbines. [0002] The invention relates in particular to non-destructive testing of the integrity of the blades of wind turbines, especially large wind turbines, corresponding to testing as far as possible without dismantling the blades. Background technique [0003] The industry of producing energy, especially electricity, by wind turbines is growing rapidly. The concern for gathering maximum energy with wind turbines and the search for economies of scale lead to the design of ever larger machines with blades of great length in terms of blade span and towers supporting nacelles of great height. [0004] Currently, wind turbine blades reach a span size of greater than 50 meters, and prototypes of more than 75 meters are under construction. These blades are subject to many constraints which lead to their manufacture in metallic and / or composite materials. [0005] The composite materials used are of the typ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00F03D1/00G01N25/72
CPCF03D1/065F05B2260/83G01M99/002G01N25/72Y02E10/72
Inventor J·布泰尔P·茹昂
Owner ARIANEGRP SAS