CN106197913B - Wind electricity blade detection system - Google Patents
Wind electricity blade detection system Download PDFInfo
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- CN106197913B CN106197913B CN201610765579.XA CN201610765579A CN106197913B CN 106197913 B CN106197913 B CN 106197913B CN 201610765579 A CN201610765579 A CN 201610765579A CN 106197913 B CN106197913 B CN 106197913B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0033—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining damage, crack or wear
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0016—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of aircraft wings or blades
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0075—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by means of external apparatus, e.g. test benches or portable test systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/043—Analysing solids in the interior, e.g. by shear waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The present invention relates to a kind of wind electricity blade detection system, supersonic detection device and imaging detection device, comprehensive survey blade surface damages and underbead crack, detects outer surface using thermal imaging, and using acoustic detection underbead crack, joint guarantees leaf quality.Field programmable gate array one end is connected with computer, the other end of field programmable gate array is connected with supersonic detection device and imaging detection device, computer is for extracting characteristics of image and acoustic characteristic, field programmable gate array is used to control the operation of supersonic detection device and imaging detection device, supersonic detection device is for detecting blade interior crackle, and imaging detection device is for detecting blade exterior defect.
Description
Technical field
The present invention relates to a kind of detection systems, more specifically to a kind of wind electricity blade detection system.
Background technique
Attempt have infrared, ultrasonic, sound emission, ray etc. for the lossless detection method of blade in the world, these method mesh
Before be in the laboratory research stage, without molding specification and standard.At home, most of blade factory is by static(al) reality
Test, profile measurement, visually, the methods of tap and to carry out quality control.And the defect of blade surface such as include bonding, sand holes, hickie,
The many such as fold, bulge be all it is tiny and hidden, detection is not easy, and simply by physics modes such as shape range estimations is difficult to check complete
Face.
Blade causes the source of damage to be most importantly the long crack on blade with using and can gradually crack, due to
It after crack initiation, will be extended by continuous, fit and interference process forms sufficiently long crackle and blade is made to have lateral break
The possibility split, and just germinated crackle out, it does not threaten safely to blade, so the extension of short crack is the key that monitoring
Point, the continuous extension of crackle this may result in the danger of fracture.In Wind turbines operating, blade is in suffered wind load and internal stress
Under the action of, the short crack of germinating is more, and the crackle extended again is a portion.The feature that crackle extends again can be extracted
Signal is different from the crackle of germinating, realizes that the emphasis to cracked extension position monitors, is to practice blade state monitoring and keep away
Exempt from major accident.
In view of the above shortcomings, the designer is actively subject to research and innovation, to found a kind of wind electricity blade detection system
System makes it with more the utility value in industry.
Summary of the invention
In order to solve the above technical problems, the object of the present invention is to provide a kind of using thermal imaging detection blade outer surface damage
Wound, using acoustic detection blade interior crackle, joint guarantees the wind electricity blade detection system of leaf quality.
Wind electricity blade detection system of the present invention, comprising:
Detect the supersonic detection device of blade interior crackle；
Detect the imaging detection device of blade outer surface damage；
It is connect, is controlled described by wired or wireless mode with the supersonic detection device, imaging detection device
The field programmable gate array that supersonic detection device, imaging detection device are run；
Data are carried out with the field programmable gate array and lead to communication connection, extract the figure of the imaging detection device output
As the computer for the acoustic characteristic that feature and the supersonic detection device export.
Further, the supersonic detection device include: processor I, digital analog converter I, driving device I, thermal imaging system,
The electrically heated high frequency flashing light lamp I of light and high frequency flashing light lamp II are carried out to blade, wherein described in the output end connection of the processor I
The input terminal of digital analog converter I, the output end of the digital analog converter connect the input terminal of the driving device I, high frequency flashing light
The input terminal of lamp I and high frequency flashing light lamp II is connected with the output end of driving device I, and processor I exports high frequency flashing light lamp I and high frequency
II driving signal of flash lamp and amplification through driving device I is to motivate strobe light I and high frequency flashing light lamp II to run, thermal imaging system
Input terminal be connected with the output end of driving device I, the output end of thermal imaging system is connected with processor I, thermal imaging system detect leaf
Each regional temperature in piece surface is simultaneously imaged, and picture signal is transmitted to processor I, picture signal is transmitted to computer by processor I.
Further, the supersonic detection device includes automatic cutting device, automatic exciting device, driving device II, number
Mode converter II, sensor I, sensor II and processor II；The fixed point cutoff signal of automatic cutting device reception processor II
And blade is cut；Digital analog converter II is connected with the output end of processor II, and digital analog converter II is used for processor
II digital controlled signal is converted into analog signal output；The output end phase of the input terminal of driving device II and digital analog converter II
Even, the output end of driving device II is connected with automatic cutting device, and driving device II is used for the driving signal of amplification processor II
And automatic cutting device is driven to run；Automatic exciting device input terminal is connected with driving device II, the output of automatic exciting device
End is connected with processor II, and the driving signal of processor II amplifies through driving device II and automatic exciting device is motivated to run, from
Dynamic exciting device applies vibration force to blade and feeds back self-operating state to processor II；Sensor I and sensor II it is defeated
Enter end to be connected with driving device II, the output end of sensor I and sensor II is connected with processor II, sensor I and sensor
II, for sending acoustic signals to blade for detecting blade cracks and receiving acoustic signals, the acoustic signals received is converted
It exports for electric signal to processor II, processor II is acquired each signal and is exported respectively to computer.
Further, the processor I and processor II are all connected by fieldbus with field programmable gate array.
Further, the computer carries out two-way number by field programmable gate array and processor I and processor II
According to transmission, the operation of computer control processor I and processor II, computer receives the imaging signal of processor I and to image
Be split optimization and obtain thermal imaging figure, computer receive the acoustic characteristic that the signal of processor II and extracting is not gone the same way with
Draw sound wave curve.
Further, the high frequency flashing light lamp I and high frequency flashing light lamp II have multiple, composition high frequency flashing light lamp array column.
Further, the sensor I and sensor II have multiple, and the sensor I and sensor II are distributed in blade
Two sides.
According to the above aspect of the present invention, the present invention has at least the following advantages:
Supersonic detection device detects blade interior crackle, and imaging detection device detects blade outer surface damage, ultrasound detection
Device and imaging detection device are contactless detection.
Outside is detected using active thermal imaging.
To internal feature plus extraction is distinguished, extracts the feature of long crack.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
Fig. 1 is the system block diagram of wind electricity blade detection system control system of the present invention；
Fig. 2 is the structural block diagram of the imaging detection device of wind electricity blade detection system control system of the present invention；
Fig. 3 is the structural block diagram of the supersonic detection device of wind electricity blade detection system control system of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
In Fig. 1, the present embodiment wind electricity blade detection system, including computer, field programmable gate array.Ultrasound detection
Device and imaging detection device, the damage of comprehensive survey blade surface and underbead crack, detect outer surface using thermal imaging, using sound
Wave detects underbead crack, and joint guarantees leaf quality.
Field programmable gate array one end is connected with computer, and the other end and ultrasound detection of field programmable gate array fill
It sets and is connected with imaging detection device, computer is for extracting characteristics of image and acoustic characteristic, and field programmable gate array is for controlling
The operation of supersonic detection device and imaging detection device processed, supersonic detection device is for detecting blade interior crackle, image checking
Device is for detecting blade exterior defect.
As shown in Fig. 2, the imaging detection device includes blade, thermal imaging system, driving device I, high frequency flashing light lamp I, height
Strobe light II, processor I and digital analog converter I.The input terminal of high frequency flashing light lamp I and high frequency flashing light lamp II and driving device I
Output end be connected, the input terminal of driving device I is connected with the output end of digital analog converter I, the input terminal of digital analog converter I and
Processor I is connected, processor I export high frequency flashing light lamp I and II driving signal of high frequency flashing light lamp and amplification through driving device I with
Strobe light I and high frequency flashing light lamp II is motivated to run, strobe light I and high frequency flashing light lamp II carry out light heating to blade.High frequency
Flash lamp I and high frequency flashing light lamp II have multiple, composition high frequency flashing light lamp array column, and high frequency flashing light lamp array, which is arranged, actively add to blade
Heat, blade is heated and generates temperature and becomes, and heat build-up in sand holes, and heat is small in bubble and then forms different hot-zones.Utilize thermal imaging
Blade is imaged in instrument, and then obtains the different characteristics of image of different fault locations.It is aobvious that processing is carried out to image using computer
Show, is detected.
As shown in figure 3, the input terminal of thermal imaging system is connected with driving device I, output end and I phase of processor of thermal imaging system
Even, thermal imaging system detects each regional temperature of blade surface and is imaged, and picture signal is transmitted to processor I.Processor I receives
Picture signal first pre-processes image to increase the contrast of image and clarity, is exported later to computer.
The supersonic detection device includes blade, automatic cutting device, automatic exciting device, driving device II, digital-to-analogue turn
Parallel operation II, sensor I, sensor II and processor II.The fixed point cutoff signal of automatic cutting device reception processor II is simultaneously right
Blade is cut.Digital analog converter II is connected with the output end of processor II, and digital analog converter II is used for processor II
Digital controlled signal is converted into analog signal output.The input terminal of driving device II is connected with the output end of digital analog converter II,
The output end of driving device II is connected with automatic cutting device, driving signal and drive of the driving device II for amplification processor II
Dynamic automatic cutting device operation.Automatic cutting device cut-off blade obtains long crack, utilizes the acoustic detection long crack of sensor I
Locate signal.
Automatic exciting device input terminal is connected with driving device II, output end and II phase of processor of automatic exciting device
Even, the driving signal of processor II amplifies through driving device II and automatic exciting device is motivated to run, and automatic exciting device is to leaf
Piece applies vibration force and feeds back self-operating state to processor II.Automatic exciting device applies vibration force to blade, so that leaf
On piece generates crack initiation, and crack initiation is distributed on blade and intensively assembles at long crack, and sensor I and parallel operation II detect
The crack initiation feature of each point simultaneously exports characteristic signal.Processor II, which receive to each road signal, is forwarded to computer, calculates
Machine carries out time frequency analysis to signal, distinguishes long crack and crack initiation and in running crack and is modeled near long crack
It obtains long crack, provide parameter in turn in running crack and crack initiation feature for actual detection.
The input terminal of sensor I and sensor II is connected with driving device II, the output end of sensor I and sensor II with
Processor II is connected, and sensor I and sensor II are for sending acoustic signals to blade for detecting blade cracks and reception sound
Wave signal converts electric signal for the acoustic signals received and exports to processor II, and processor II adopts each signal
Collect and is exported respectively to computer.
Sensor I and sensor II have multiple, the blade information of multiple sensors I and the acquisition of sensor II difference.
Sensor I and sensor II are distributed in the two sides of blade, and sensor I and sensor II are fixed on the two sides of blade,
And the crackle in ultrasonic listening blade each point region is sent to blade and exports different characteristic signals.
Processor I and processor II are all connected by fieldbus with field programmable gate array, field-programmable gate array
Column provide the reception of industrialization logic control and signal, provide interface and reduce the processing load of computer.
Computer carries out bidirectional data transfers, computer by field programmable gate array and processor I and processor II
The operation of control processor I and processor II, computer, which receives the imaging signal of processor I and is split to image, to be optimized
Thermal imaging figure out, computer receive the signal of processor II and extract the acoustic characteristic that do not go the same way to draw sound wave curve.
The above is only a preferred embodiment of the present invention, it is not intended to restrict the invention, it is noted that for this skill
For the those of ordinary skill in art field, without departing from the technical principles of the invention, can also make it is several improvement and
Modification, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of wind electricity blade detection system characterized by comprising
Detect the supersonic detection device of blade interior crackle；
Detect the imaging detection device of blade outer surface damage；
It is connect with the supersonic detection device, imaging detection device by wired or wireless mode, controls the ultrasound
The field programmable gate array that detection device, imaging detection device are run；
Data communication connection is carried out with the field programmable gate array, the image for extracting the imaging detection device output is special
Seek peace supersonic detection device output acoustic characteristic computer；
The imaging detection device includes: processor I, digital analog converter I, driving device I, thermal imaging system, carries out light to blade
Electrically heated high frequency flashing light lamp I and high frequency flashing light lamp II, wherein the output end of the processor I connects the digital analog converter I
Input terminal, the output end of the digital analog converter I connects the input terminal of the driving device I, high frequency flashing light lamp I and high stroboscopic
The input terminal of light lamp II is connected with the output end of driving device I, and processor I exports high frequency flashing light lamp I and high frequency flashing light lamp II and drives
Signal and the amplification through driving device I are moved to motivate high frequency flashing light lamp I and high frequency flashing light lamp II operation, the input terminal of thermal imaging system
It is connected with the output end of driving device I, the output end of thermal imaging system is connected with processor I, and it is each that thermal imaging system detects blade surface
Region is simultaneously imaged, and picture signal is transmitted to processor I, picture signal is transmitted to computer by processor I；
The supersonic detection device includes automatic cutting device, automatic exciting device, driving device II, digital analog converter II, passes
Sensor I, sensor II and processor II；Automatic cutting device receives the fixed point cutoff signal of processor II and cuts to blade
It cuts；Digital analog converter II is connected with the output end of processor II, and digital analog converter II is used for the digital control letter of processor II
Number it is converted into analog signal output；The input terminal of driving device II is connected with the output end of digital analog converter II, driving device II
Output end be connected with automatic cutting device, driving device II for amplification processor II driving signal and drive automatic cutting
Device operation；Automatic exciting device input terminal is connected with driving device II, output end and the processor II phase of automatic exciting device
Even, the driving signal of processor II amplifies through driving device II and automatic exciting device is motivated to run, and automatic exciting device is to leaf
Piece applies vibration force and feeds back self-operating state to processor II；The input terminal and driving device of sensor I and sensor II
II is connected, and the output end of sensor I and sensor II are connected with processor II, and sensor I and sensor II are for sending sound wave
Signal converts electric signal output for the acoustic signals received for detecting blade cracks and receiving acoustic signals to blade
To processor II, processor II is acquired each signal and is exported respectively to computer；
The computer carries out bidirectional data transfers, computer by field programmable gate array and processor I and processor II
The operation of control processor I and processor II, computer, which receives the imaging signal of processor I and is split to image, to be optimized
Thermal imaging figure out, computer receive the signal of processor II and extract the acoustic characteristic that do not go the same way to draw sound wave curve.
2. wind electricity blade detection system according to claim 1, which is characterized in that the processor I and processor II are
It is connected by fieldbus with field programmable gate array.
3. wind electricity blade detection system according to claim 1, which is characterized in that the high frequency flashing light lamp I and high stroboscopic
Light lamp II has multiple, composition high frequency flashing light lamp array column.
4. wind electricity blade detection system according to claim 1, which is characterized in that the sensor I and sensor II have
Multiple, the sensor I and sensor II are distributed in the two sides of blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610765579.XA CN106197913B (en) | 2016-08-30 | 2016-08-30 | Wind electricity blade detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610765579.XA CN106197913B (en) | 2016-08-30 | 2016-08-30 | Wind electricity blade detection system |
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| CN106197913A CN106197913A (en) | 2016-12-07 |
| CN106197913B true CN106197913B (en) | 2019-06-07 |
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| CN201610765579.XA Expired - Fee Related CN106197913B (en) | 2016-08-30 | 2016-08-30 | Wind electricity blade detection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113406107B (en) * | 2021-07-13 | 2023-04-07 | 湖南工程学院 | Fan blade defect detection system |
| CN113820393A (en) * | 2021-08-27 | 2021-12-21 | 明阳智慧能源集团股份公司 | Comprehensive safety detection system and method for wind generating set |
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| DE102009046804A1 (en) * | 2009-11-18 | 2011-05-19 | Man Diesel & Turbo Se | Method for crack detection on blades of rotor of e.g. gas turbine, involves comparing recorded frequency spectrum with center value such that cracked blades are closed when frequency spectrum of blades incorrectly deviates from center value |
| CN101713756B (en) * | 2009-12-24 | 2012-05-30 | 首都师范大学 | Non-contact ultrasonic thermal-excitation infrared imaging nondestructive detection method and system |
| CN102809611A (en) * | 2011-06-02 | 2012-12-05 | 中国人民解放军装甲兵工程学院 | System and method for detecting damage of metal component nondestructively |
| CN103389341B (en) * | 2012-05-10 | 2015-12-02 | 沈阳工业大学 | windmill blade crack detection method |
| CN103149240A (en) * | 2013-03-19 | 2013-06-12 | 南京诺威尔光电系统有限公司 | Nondestructive detecting system and method for automatic tracking thermal wave imaging |
| CN105122046B (en) * | 2013-03-29 | 2018-01-23 | 斯奈克玛 | For the defects of detection object method |
| CN103604872B (en) * | 2013-11-21 | 2016-06-15 | 三峡大学 | Crack expansion acoustic emission method |
| CN104215640A (en) * | 2014-08-18 | 2014-12-17 | 南京航空航天大学 | Wind-generator blade defect damage inspection method and inspection system based on unmanned helicopter |
| CN206281624U (en) * | 2016-08-30 | 2017-06-27 | 大唐东北电力试验研究所有限公司 | Wind electricity blade detection system |
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Non-Patent Citations (1)
| Title |
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| "叶片根深裂纹的原位超声波检测";董瑞琴;《无损检测》;20160131;第38卷(第1期);第38-41页 * |
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