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Wind driven generator blade detection device

A technology for wind turbines and detection devices, which is applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, and can solve the problems of high maintenance costs for blade operation and maintenance.

Inactive Publication Date: 2014-08-06
SHANGHAI DIANJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Brings high maintenance costs to the operation and maintenance of the blades

Method used

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  • Wind driven generator blade detection device

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Embodiment Construction

[0014] In order to make the content of the present invention clearer and easier to understand, the content of the present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0015] figure 1 Schematically shows a block diagram of a wind turbine blade detection device according to a preferred embodiment of the present invention.

[0016] Such as figure 1 As shown, the wind turbine blade detection device according to the preferred embodiment of the present invention includes: an acoustic emission detection device and a data analysis device.

[0017] Wherein, the acoustic emission detection device includes: an acoustic emission source 11, an acoustic emission sensor 10, a signal conditioning circuit 20, a digital encoding circuit 30, and a WiFi transmitter 40; and the data analysis device includes a WiFi receiver 50, an acoustic emission signal An acquisition card (PXDAQ) signal acquisition and processing system 60 an...

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Abstract

The invention provides a wind driven generator blade detection device which comprises an acoustic emission detection device and a data analysis device, wherein the acoustic emission detection device comprises an acoustic emission source, an acoustic emission sensor, a signal conditioning circuit, a digital encoding circuit and a wireless fidelity (WiFi) emitter; the data analysis device comprises a WiFi receiver, an acoustic emission signal acquisition card signal acquisition processing system and a display system. The acoustic emission source is used for transmitting elastic waves to wind driven generator blades to be detected; the acoustic emission sensor is used for detecting mechanical vibration of the wind driven generator blades to be detected caused by the elastic waves, generating an electric signal which expresses the mechanical vibration and transmitting the electric signal to the signal conditioning circuit; the signal conditioning circuit is used for performing digital signal processing on the electric signal.

Description

technical field [0001] The invention relates to the field of wind power generation detection, and more specifically, the invention relates to a wind power generator blade detection device. Background technique [0002] After working for a period of time, due to the daily maintenance of the wind turbine, the blades are often not paid attention to, and the blades will change with time under adverse conditions such as sunlight, acid rain, strong wind, self-vibration, sandstorm, and salt spray. Once a problem is found on the ground, due to aging, the blades will naturally appear natural cracks, trachoma, surface wear, lightning damage, transverse cracks, etc. It brings high maintenance costs to the operation and maintenance of the blades. [0003] Therefore, timely and accurate judgment of blade damage is an urgent problem to be solved. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a wind power generator blade de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04
Inventor 徐永斌谢源高志飞
Owner SHANGHAI DIANJI UNIV
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