CN108386323A - A kind of fan blade damage sync detection device and method - Google Patents
A kind of fan blade damage sync detection device and method Download PDFInfo
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- CN108386323A CN108386323A CN201810104295.5A CN201810104295A CN108386323A CN 108386323 A CN108386323 A CN 108386323A CN 201810104295 A CN201810104295 A CN 201810104295A CN 108386323 A CN108386323 A CN 108386323A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
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Abstract
The present invention relates to a kind of fan blade damage sync detection device and methods, described device includes lifting mechanism, propulsive mechanism, lazy-tongs, mobile mechanism, annulus collecting mechanism, information process unit, lazy-tongs include lazy-tongs matrix, intelligent locking apparatus, and annulus collecting mechanism includes infrared thermoviewer, infrared flashlight driving source regulating system.The method includes：Lifting mechanism by device lift just, raising, it is synchronous with wind turbine that delivery device pushes detection device, annulus collecting mechanism is sent to detection position by mobile mechanism, the height, angle, frequency of infrared flashlight is adjusted in regulating system, infrared thermoviewer acquisition image data is sent to information process unit, the infrared three-dimensional thermography of information process unit structure blade is analyzed and determined that device resets, and detection terminates.The advantage of the invention is that：It realizes fan blade damage on-line synchronous detection, damage is judged by the infrared three-dimensional thermal imagery map analysis of fan blade, substantially reduces detection time.
Description
Technical field
The invention belongs to wind turbine damage detection technology field more particularly to a kind of fan blade damage sync detection device and
Method.
Background technology
Wind is a kind of energy of not public hazards, very environmentally friendly using wind-power electricity generation, and the electric energy that can be generated is very huge,
Therefore more and more countries more pay attention to wind-power electricity generation.Fan blade is converted to the front end equipment of electric energy as wind energy,
The quality of performance directly determines the height of transfer efficiency, thus periodic detection its situation is extremely important.
Fan blade is shell structure made of a composite material, and 90% or more of weight is made of composite material,
Every generator generally has branched blade.Blade transport and installation process in, due to blade size itself and conduct oneself with dignity it is larger and
And the generation of fan blade internal injury can be caused with certain elasticity.Even more noteworthy, due to the evil of working environment
The property complicated and changeable of pessimum and operating mode, fan blade is in sunlight, acid rain, blast, self-vibration, dust storm, under conditions of salt fog etc. is unfavorable
With the variation of time, degeneration also occurs for performance, until natural cracking is generated, trachoma, surface abrasion, broken by lightning, cross
To failures such as crackles.Moreover, also will appear different degrees of fatigue damage in the process of running；If daily can carry out blade
Periodic maintenance, so that it may to avoid the maintenance cost of great number in the future, reduce the economic loss caused by shutting down.
Detecting in such a way that monitoring is combined, it can prevent and can avoid the generation of accident.At present to wind turbine
Crop leaf measuring can be divided into production quality inspection and military service blade is in place, on-line checking.Quality inspection is produced often to the life in production process
Defect, material tests are produced, this detection is realization easy to operate.However to the blade on-line checking of military service it is most of still according to
It manually detects, artificial detection has that dangerous high, detection efficiency is low, labor intensity is big, data are not easy to maintain and when detecting
Between it is long the defects of.Therefore, military service blade on-line checking gradually obtains more and more attention.With carrying for non-destructive testing technology
It rises, non-destructive testing can be combined with advanced mechanical device, different military services is designed using different non-destructive testing technologies
Blade detects in place.Common fan blade non-destructive testing technology has：The inspections such as ultrasonic wave, sound emission, X-ray, infrared thermal imaging
Survey technology.But each detection method all has the advantages that respective and uses limitation, and there is no perfect standards to provide
The applicable stage of detection method.Such as authorize publication No. CN204961177U, the patent document in date of publication on January 13rd, 2016 discloses
A kind of fan blade detection device, is a kind of fan blade real-time detection apparatus using active infra-red thermal imaging,
The detection device feature will be detected manually with each parameter setting of light illuminating unit into optimum state before being to detect；Such as Shen Qing Publication
Number CN107063602A, the date of publication patent document on the 18th of August in 2017 disclose a kind of fan blade mechanical damage detection dress
It sets, is a kind of based on carrying out the degree of intelligence that can accurately identify damaged blade position of Digital Image Processing to image
High detection device, which solves existing pneumatic equipment bladess there is inconvenient, detection is inaccurate, degree of intelligence is low,
The shortcomings of practicability is poor, complicated；Such as application publication number CN106501280A, the patent in date of publication on March 15th, 2017
Document discloses a kind of fan blade on-line measuring device and its detection method based on laser ranging, which is swashed using three-dimensional
Ligh-ranging carries out blade contactless detection technique, the case where capable of effectively monitoring blade, finds failure in time.However,
Above-mentioned fan blade, which is on active service to detect in place, can only realize fan blade static detection, and static detection overlong time is brought quite
The problems such as big economic loss.Therefore, a kind of device being suitable for fan blade military service on-line checking of research has important work
Journey application value and practical significance.The patent document of Authorization Notice No. CN20483211U, date of publication on December 2nd, 2015 disclose
A kind of wind field running blade of wind-driven generator detection device, the detection device are the principles using sound phase instrument, pass through sound
The sound that blade is sent out when source receiving device receives the rotation of wind turbine power generation machine detects that blade damages shape by timely data processing
State, which solves the technologies for the apparatus for examination and repair for not having the damaged condition for detecting blade of wind-driven generator promptly and accurately
Problem, and the ground that can be placed on from one determining deviation of wind turbine is detected running wind turbine.But the device is largely
On influenced by surrounding medium environment, influence image quality, and also do not account for when wind direction changes, wind turbine also can
As wind direction circumferentially rotates, to which the precondition that detection device is placed in windward side will change so that detection
The error of generation is larger.
Therefore, fan blade damage check should meet military service on-line checking, and adapt to the variation of wind direction, to
The detection that can be very good to complete blade shows very intuitive defect.
Invention content
The object of the present invention is to provide a kind of fan blade damage sync detection devices and method, the detection device can be real
The online detection of existing fan blade.The thermography that blade different directions are acquired by annulus collecting mechanism, through information process unit
The infrared three-dimensional thermography of processing structure fan blade, what the damage of blade can be very visual in image is presented on three-dimensional thermography
In, the acquisition of thermography is completed during fan operation, can reduce the warp brought because shutdown detection time is long in this way
Ji loss.The detection device can according to fan blade different parts curved surface automatically adjust infrared flashlight driving source angle with
Highly, the Acquisition Error caused by larger, lack of homogeneity of temperature field spatial gradient etc. can be thus reduced, according to blade difference portion
The thickness of position adjusts excitation source frequency, can reduce in this way due to encouraging improper and missing inspection depths damage.
The technical solution adopted by the present invention：A kind of fan blade damage sync detection device, including lifting mechanism, pusher
Structure, lazy-tongs, mobile mechanism, annulus collecting mechanism, information process unit；Lifting mechanism is by lifting module and box elliptic
Telescopic arm forms；Lifting mechanism is connect with propulsive mechanism；Propulsive mechanism is flexibly connected with lazy-tongs；Lazy-tongs are equipped with multigroup
Mobile mechanism, it is identical as fan blade number respectively；Mobile mechanism is equipped with mobile work platform；Mobile work platform and annulus harvester
Structure connects.
A kind of lifting mechanism of fan blade damage sync detection device is stretched by lifting module and box elliptic
Contracting arm is constituted, and lifting module is that detection device is lifted to the vertical position of parallel wind turbine tower from the initial position on parallel ground,
Box elliptic telescopic arm is that detection device is risen to lazy-tongs matrix central axes to overlap with axial fan hub housing axis；Institute
It states lifting mechanism to be made of lifting module and box elliptic telescopic arm, the lifting module includes Triangular Arm, pull rod, hydraulic cylinder
Assembly；Triangular Arm is to be arranged symmetrically with pull rod, and the Triangular Arm lower end and pan frontward end are hinged, the pull rod lower end with it is described
Triangular Arm upper end is hinged, and the pull rod upper end is hinged with the box elliptic telescopic arm, the upper end of the hydraulic cylinder assembly with
The box elliptic telescopic arm is hinged, and lower end and the hinged box elliptic telescopic arm single-unit in the middle part of the Triangular Arm are flexible
Arm overall length be equal to the sum of single-unit extended length and nested lengths, single-unit telescopic arm it is previous save telescopic arm in nested parts according to
Minimum lap of splice principle is chosen, and elongation is selected according to the elasticity modulus of selected materials with Poisson's ratio, the box is ellipse
Round type telescopic arm connects propulsive mechanism.Propulsive mechanism is made of a set of hydraulic system, which is along axial fan hub housing axis
Direction pushes detection device, and delivery device triggers intelligent locking apparatus while withdrawal.
A kind of lazy-tongs of fan blade damage sync detection device, are a kind of that detection device is same with wind turbine
The mechanism of step, the mechanism reach synchronous effect, radial degree of freedom by being constrained with radial degree of freedom axial degree of freedom
By completing to constrain with the synchronous matrix concave structure of the blade root of axial fan hub shell, blade cooperation, axial freedom passes through
Intelligent locking apparatus is completed to constrain, and the intelligent locking apparatus includes lock tongue, transmission mechanism, deceleration mechanism, driving motor, touches
Send out module；The trigger module includes pressure sensor, pressure ball, compression spring, wherein the average helical diameter of compression spring
Less than pressure bulb diameter；Multigroup trigger module is connected using OR circuit, is prevented single trigger module from damaging and is influenced entire inspection
Survey device normal work.
The mobile mechanism of described a kind of fan blade damage sync detection device, by ball screw framework by motor
Rotary motion is converted into the precision machinery device of workbench linear motion, and ball-screw makes the detection of every section of blade all meshingly
Closely, detection process is very steady, since ball-screw has the invertibity of transmission, so using fast after detection
It moves back, uses this high-accuracy mechanical device that can detection error be greatly reduced.
A kind of annulus collecting mechanism of the fan blade damage sync detection device, including more infrared thermoviewers,
Infrared flashlight driving source regulating system and annulus matrix.It is uniformly placed between the infrared flashlight driving source regulating system
On annulus matrix, more infrared thermoviewers are uniformly distributed on the annulus matrix between infrared flashlight driving source regulating system.
A kind of annulus collecting mechanism of fan blade damage sync detection device, wherein driving source select infrared lamp
Bubble, because the thermal conversion efficiency of infrared lamp and the efficiency of heating surface are high, and starting efficiency is high, can radiate and reach within a short period of time
Peak continues the influence of radiation after light bulb will not be caused to close.
A kind of infrared flashlight driving source of fan blade damage sync detection device, single pulse infrared flare
Driving source successively decreases around centered on generating temperature field on examined workpiece surface and having the characteristics that by driving source corresponding points, even number
Pulsed infrared flash of light driving source is covered simultaneously to workpiece heat, and the radiation of pulsed infrared flash of light driving source can be overlapped mutually, can reduce
The heat wave temperature generated by pulsed infrared flash of light driving source.Similarly, if glistened using four, six or multiple pulsed infrareds
Driving source carries out regular arrangement, then can not only greatly improve the spatial dimension and one-time detection area of heat wave radiation, improve
The time gradient of Wen Sheng, moreover it is possible to more effectively reduce spatial gradient, this is conducive to the flaw detection to interior of articles defect and improves inspection
Survey efficiency.
A kind of infrared flashlight driving source regulating system of fan blade damage sync detection device, passes through adjusting
The height of driving source makes driving source adapt to the curved surface variation of surveyed blade different parts with angle, make driving source from blade away from
From being maintained within the scope of 550mm-650mm；The change of blade different parts thickness is adapted to by adjusting the driving frequency of driving source
Change.
A kind of infrared flashlight driving source regulating system of fan blade damage sync detection device, height and angle
Degree regulating device includes distance and angle detection module, microprocessor module, steering engine, electric telescopic rod, and distance is detected with angle
Distance of the infrared flashlight driving source away from detection surface is passed to microprocessor module by module with the real-time angle parameter of steering engine,
Excitation optimal adjustment parameter is calculated through analysis through processor, by adjusting steering engine and light weight electric telescopic rod, improves excitation
Between source due to angle and position caused by the larger, lack of homogeneity of temperature field spatial gradient etc. disadvantage, on the one hand can be with
Disadvantage mentioned above is substantially improved, the spatial dimension and one-time detection area of heat wave radiation on the other hand can be improved.
A kind of infrared flashlight driving source regulating system of fan blade damage sync detection device is to excitation frequency
The adjusting of rate, frequency regulation arrangement include arbitrarily signal generating device, amplifier, and information process unit is according to blade lane database
Vane thickness parameter, selects frequency appropriate to send instructions to arbitrarily signal generating device, and arbitrarily signal generating device passes through amplification
Signal is issued infrared flare driving source by device, is come and fan blade difference portion by using the infrared flare driving source of different frequency
The thickness of position matches, and different driving frequencies can detect the damage of different depth, when frequency is high, be conducive to searching surface
Damage.When frequency is low, detectable relatively deep damage provides the two-dimensional infrared thermograph of different directions for three-dimensional thermal imaging.
A kind of the selection of material of fan blade damage sync detection device, Suo Su mechanisms are all made of bending and compression
Intensity is in 500Mpa or more, high strength light material of the relative density between 1.0-1.5；Multigroup mobile mechanism, institute
The quantity for stating annulus collecting mechanism is identical as the quantity of fan blade.
A kind of application method of fan blade damage sync detection device, characterized in that mainly include the following steps that：
(1) first step：
Lifting mechanism starts：The lifting module of lifting mechanism starts, and the lifting angle for lifting module is lifted to 90 ° by 0 °, makes
The vertical position that detection device is lifted to parallel wind turbine tower from the initial position on parallel ground is obtained, box elliptic telescopic arm is stretched
Long, the centering detection module on lazy-tongs central axes to be located at detects lazy-tongs matrix central axes and axial fan hub shell
When axis overlaps, box elliptic telescopic arm stops elongation；
(2) second step：
The synchronization of detection device：The hydraulic stem of propulsive mechanism extends, and detection dress is pushed along axial fan hub housing axis direction
It sets, waits for the sensor of axial fan hub shell triggering lazy-tongs bottom portion of groove, delivery device stops push, at this time when lazy-tongs
Radial locking is completed, the hydraulic stem of propulsive mechanism executes recovery command, while triggering intelligent locking apparatus, carries out axial locking,
Final lazy-tongs complete the radial constraint with axial direction of combination；
(3) third walks：
Mobile mechanism runs：Annulus collecting mechanism is sent to wind turbine by detection mobile mechanism by initial mobile mechanism end
At the wing tip of blade, mobile mechanism is driven apart from interior to blade root direction with the single feed range of 285mm-400mm, until transmission
To blade root；
(4) the 4th steps：
The adjusting of driving source：Testing agency is driven to detection position by mechanism to be moved static, infrared flashlight driving source
The electric telescopic rod of regulating system is adjusted height, the angle of driving source with steering engine, driving source with fan blade song
Face variation is adjusted, and so that driving source is maintained within the scope of 550mm-650mm with a distance from blade, actuation duration 30s；According to
The thickness parameter for the blade being loaded into before information process unit detection, information process unit is to infrared flashlight driving source regulating system
Arbitrarily signal generating device transmission data, arbitrarily signal generating device sends a signal to infrared flashlight driving source through amplifier, makes
Driving frequency adapts to the thickness change of blade different parts；
(5) the 5th steps：
The acquisition of Infrared Thermogram：The same position that multigroup infrared thermoviewer on annulus collecting mechanism completes blade is multi-party
To infrared two-dimentional thermography acquisition, the sample frequency of infrared thermoviewer is set as 5Hz-10Hz, acquisition time 90s, acquires
Obtained leaf image data transmission is to information process unit；
(6) the 6th steps：
Information process unit handles information：Recycle above-mentioned steps third and fourth, five steps to blade root, information process unit
The infrared three-dimensional thermography of blade is built according to obtained image data is received, and blade injury is analyzed and determined；
(7) the 7th steps：
Device resets：Annulus testing agency is retreated to the initial position of mobile mechanism end, pusher soon by mobile mechanism
The hydraulic stem of structure, which is extended to lazy-tongs matching hole internal trigger intelligent locking apparatus, unlocks, and withdraws detection device, lifting mechanism
Detection device is resetted in initial horizontal position with lifting module by box elliptic telescopic arm.
The beneficial effects of the present invention are the online detections of fan blade；The different curved surface of fan blade, thickness exist
Difference, the detection device is with the driving source regulating system for adapting to spoon of blade, thickness change；It is infrared by three that wind blade can be achieved
Tie up thermography structure, by three-dimensional Infrared Thermogram can be visual in image find out defect whereabouts；With automation journey
The advantages that degree is high, adaptable, detection efficiency is high.
Description of the drawings
Fig. 1 is the whole assembling schematic diagram of the present invention.
Fig. 2 is the annulus collecting mechanism schematic diagram of the present invention.
Fig. 3 is the lazy-tongs schematic diagram of the present invention.
Fig. 4 is the lazy-tongs trigger module partial schematic diagram of the present invention.
Fig. 5 is the propulsive mechanism schematic diagram of the present invention.
Fig. 6 is the lifting mechanism schematic diagram of the present invention.
Fig. 7 is the application method flow chart of the present invention.
Specific implementation mode
Carry out the embodiment that the present invention will be described in detail below in conjunction with accompanying drawings and embodiments, thereby how the present invention is applied
Technological means solves technical problem and reaches the realization process of technical effect to fully understand and implement.
As shown in Figure 1, for a kind of fan blade damage sync detection device entirety assembling schematic diagram, including lifting mechanism 1,
Propulsive mechanism 2, lazy-tongs 3, mobile mechanism 4, annulus collecting mechanism 5, mobile work platform 6, connector 7, information process unit
8；The lifting mechanism 1 is connect with the propulsive mechanism 2；The propulsive mechanism 2 is flexibly connected with the lazy-tongs 3；It is described
It is identical as fan blade number respectively equipped with multigroup mobile mechanism 4 on lazy-tongs 3；The mobile mechanism 4 is equipped with mobile working
Platform 6；The mobile work platform 6 is connect with annulus collecting mechanism 5 by connector 7.
As shown in Fig. 2, annulus collecting mechanism 5 includes thermal infrared imager 51, infrared flashlight driving source regulating system 52, circle
Ring base 53, infrared flashlight driving source regulating system 52 include infrared excitation source flash lamp 521, distance and angle detection module
522, driving source bearing 523, steering engine 524, electric telescopic rod 525, arbitrarily signal generating device 526, amplifier 527, annulus matrix
53；The infrared flashlight driving source 521 is fixed on the driving source bearing 523, the radial angle and axis of driving source bearing 523
To being connect respectively with driving source bearing 523 by the telescopic end of the steering engine 524, the electric telescopic rod 525, the infrared thermal imagery
The fixing end of instrument 51 and the electric telescopic rod 525 is fitted to 53 inside of annulus matrix, and annulus matrix 53 passes through connector 7
It is linked with workbench 6.
As shown in figure 3, the assembling schematic diagram of lazy-tongs 3, including lazy-tongs matrix 31, intelligent locking apparatus 32, biography
Sensor 33, centering detection module 34, lazy-tongs 3 by lazy-tongs matrix 31 and intelligent locking apparatus 32 by detection device with
Wind turbine is locked, lazy-tongs matrix 31 by carrying out radial constraint with the matched wind turbine leaf concave structure of axial fan hub shell,
Intelligent locking apparatus 32 completes axial constraint locking；Centering detection device detects outside lazy-tongs matrix central axes and axial fan hub
Columella line overlaps, and sensor sensing delivery device push detection is in place；Intelligent locking apparatus 32 includes lock tongue 321, trigger module
322, deceleration mechanism 323, driving motor 324, controller 325, transmission mechanism 326；As shown in figure 4, lazy-tongs trigger module
322 partial schematic diagrams, the trigger module include pressure sensor 3221, compression spring 3222, pressure ball 3223, and be averaged spiral shell
It revolves diameter and is less than bulb diameter；Multigroup trigger module 322 is connected using OR circuit；The trigger module 322 triggers the driving
The rotation of motor 324, the deceleration mechanism 323 complete the biography of the power between the driving motor 324 and the transmission mechanism 326
Defeated, the transmission mechanism 326 drives the lock tongue 321 to execute the switch of intelligent locking apparatus 32.
As shown in figure 5, the propulsive mechanism 2, the propulsive mechanism is the centre of mechanism lifting mechanism 1 and lazy-tongs 3
Bindiny mechanism the opening and closing of the intelligent locking apparatus 32 of lazy-tongs 3 by the extension and contraction control of hydraulic stem.
As shown in fig. 6, the lifting mechanism of the lifting mechanism 1, including lifting module 11, box elliptic telescopic arm 12,
It includes Triangular Arm 111, pull rod 112, hydraulic cylinder assembly 113, the box elliptic telescopic arm 12 that module is lifted described in pedestal 13
It is socketed to form by single oil cylinder；Triangular Arm 111 and pull rod 112 are all arranged symmetrically, and 111 lower end of Triangular Arm is cut with scissors with 13 front end of pedestal
It connects, 112 lower end of pull rod is hinged with 111 upper end of the Triangular Arm, and 112 upper end of pull rod is cut with scissors with the box elliptic telescopic arm 12
It connects, the upper end of the hydraulic cylinder assembly 113 is hinged with the box elliptic telescopic arm 12, in lower end and the Triangular Arm 111
Portion is hinged.
As shown in fig. 7, a kind of application method step of fan blade damage sync detection device：
The first step：
Lifting mechanism raising process：The lifting module 11 of lifting mechanism 1 starts, and the lifting angle for lifting module 11 is lifted by 0 °
To 90 ° so that box elliptic telescopic arm 12 is lifted to the vertical position of parallel wind turbine tower, case from the initial position on parallel ground
Type elliptic telescopic arm 12 extends, and the centering detection module 33 on 3 central axes of lazy-tongs to be located at detects lazy-tongs base
For 31 central axes of body with axial fan hub housing axis when overlapping, box elliptic telescopic arm 12 stops elongation.
Second step：
The process that detection device synchronizes：The hydraulic stem of propulsive mechanism 2 extends, and pushes and examines along axial fan hub housing axis direction
Device is surveyed, waits for that the sensor 33 of axial fan hub shell triggering lazy-tongs bottom portion of groove, delivery device 2 stop push, pushed
The elongation end of delivery device 2 contacts always with the pressure ball 3223 of lazy-tongs 3 in journey, the lock tongue 321 of intelligent locking apparatus 32
In unlocking condition；Wait for that the sensor 33 of axial fan hub shell triggering lazy-tongs bottom portion of groove, delivery device 2 stop push,
Intelligent locking apparatus 32 is triggered simultaneously, compression spring 3222 rebounds pressure ball 3223, and pressure sensor 3221 is by pressure at this time
Force signal is transmitted to controller 325, and controller 325 controls driving motor 324 and rotates, and deceleration mechanism 323 is moved driving motor 324
Power passes to transmission mechanism 326, and the lock tongue 321 of intelligent locking apparatus is closed, and final lazy-tongs 3 are completed to detection device and wind
The radial direction of machine and axial constraint.
Third walks：
Mobile mechanism runs：The movement of workbench 6, mobile mechanism 4 is driven to acquire annulus by ball screw framework
Mechanism 5 is sent to the wing tip of fan blade by initial 4 end of mobile mechanism, and mobile mechanism 4 is with the single of 285mm-400mm
Feed range distance is driven to blade root direction, until being transmitted to blade root.
4th step：
Infrared flashlight driving source regulating system adjusts excitation source height and angle process:Distance and angle detection module
Distance of the infrared flashlight driving source 521 away from detection surface is passed to processing unit by 522 with 524 real-time angle parameter of steering engine
8, the height and angle that excitation is adjusted is calculated through analysis through processing unit 8, passes through infrared flashlight driving source regulating system
52 steering engine 524 and electric telescopic rod 525, infrared flashlight driving source 521 is passed through away from the distance between tested fan blade
Electric telescopic rod 525 is adjusted to 550mm-650mm, changes infrared flashlight driving source 524 by adjusting the angle of steering engine 524
Between superposition area, regulating system 52 is encouraged by infrared flashlight to improve between infrared flashlight driving source 521 due to angle
The disadvantage of degree and larger, lack of homogeneity of temperature field spatial gradient etc. caused by height reason, on the one hand can substantially improve above
On the other hand disadvantage can improve the spatial dimension and one-time detection area of heat wave radiation.
Infrared flashlight driving source regulating system adjusts driving frequency process：Information process unit 8 passes through the database middle period
The thickness parameter of piece selects suitable driving frequency, information process unit 8 to send required frequency to arbitrarily signal generating device 526
Instruction, arbitrarily signal generating device 526 sends the signal to amplifier 527, and final signal is sent to infrared by amplifier 527 again
Flash lamp driving source 521, the thickness of driving frequency survey fan blade to adapt to of infrared flashlight driving source 521, to make
Thermal infrared imager 51 institute collected thermograph for different-thickness position damage two-dimentional thermography.
5th step：
The acquisition of Infrared Thermogram：The same position that multigroup infrared thermoviewer on annulus collecting mechanism 5 completes blade is more
The acquisition of the infrared two-dimentional thermography in direction, within the scope of 5Hz-10Hz, acquisition time is the sample frequency of infrared thermoviewer
90s, the leaf image data transmission collected to information process unit 8.
6th step：
Pixel-level is carried out to these thermographies by the digital image processing algorithm of 8 image processing unit of information process unit
Processing and identification, find out a large amount of features；A large amount of features on different thermographies are matched using matching algorithm, are found out not
It is the same point with which point on thermography；Scene coordinate system is built, it is every by solving the methods of equation of higher degree group inversion reckoning
The corresponding acquisition position of thermography and angle (three-dimensional) are opened, i.e., thermal imaging system when being shot to every thermography positions；Finally
According to the relative spatial co-ordinates of thermal imaging system and direction and point data of the same name, using measuring the space learned algorithm and find out all same places
Three-dimensional coordinate；A large amount of same places constitute point cloud, then point is connected composition face, finally on the whole thermography patch, constitute red
Outer three-dimensional thermal imagery model, size and the position of the damage of such blade are just intuitively shown very much.
7th step：
Device reseting procedure：Annulus collecting mechanism 5 is retreated to the initial position of 4 end of mobile mechanism soon by mobile mechanism 4,
The elongation of propulsive mechanism 2 is unlocked to 3 matching hole internal trigger intelligent locking apparatus 32 of lazy-tongs, withdraws detection device, lifting machine
Structure 1 is set out by box elliptic telescopic arm 12 and lifts module 11 by detection device reset in initial horizontal position.
Claims (9)
1. a kind of fan blade damages sync detection device, which is characterized in that including lifting mechanism, propulsive mechanism, lazy-tongs,
Mobile mechanism, annulus collecting mechanism, information process unit；The lifting mechanism is by lifting module and box elliptic telescopic arm group
At the lifting mechanism is connect with the propulsive mechanism；The propulsive mechanism is flexibly connected with lazy-tongs；The lazy-tongs
Upper that multigroup mobile mechanism is housed, mobile mechanism's number is identical as fan blade number；The mobile mechanism is equipped with mobile work platform；
The mobile work platform is connect with annulus collecting mechanism；Information process unit is with annulus collecting mechanism by being wirelessly attached.
2. fan blade damage check synchronizing device according to claim 1, which is characterized in that the lazy-tongs include
Lazy-tongs matrix, intelligent locking apparatus；The intelligent locking apparatus includes lock tongue, transmission mechanism, deceleration mechanism, driving electricity
Machine, multigroup trigger module；Multigroup trigger module includes pressure sensor, pressure ball, compression spring, wherein the pressure bullet
Spring average helical diameter is less than the diameter of pressure ball；The trigger module is connected using OR circuit；The trigger module triggering
The rotation of the driving motor, the deceleration mechanism realize the power transmission between the driving motor and the transmission mechanism,
The transmission mechanism drives lock tongue to execute the switch of intelligent locking apparatus；The planform of the lazy-tongs matrix constrains
The radial degree of freedom of detection device and wind turbine；The planform of the lazy-tongs matrix and intelligent locking apparatus are by detection device
Together with wind turbine Complete Bind so that device detection is synchronous with blower fan work arrival.
3. fan blade according to claim 1 damages sync detection device, which is characterized in that the annulus collecting mechanism
Including infrared thermoviewer, infrared flashlight driving source regulating system and annulus matrix, wherein infrared thermoviewer, infrared flashlight swashs
It is multigroup to encourage source regulating system quantity；It is uniformly placed on annulus matrix between the infrared flashlight driving source regulating system,
The more infrared thermoviewers are uniformly distributed in the annulus matrix between the infrared flashlight driving source regulating system；It is described red
Outer flash lamp driving source regulating system carries out height, angle, frequency to infrared flashlight and adjusts；The regulating system to height,
The regulating device of angle includes distance and Angle Measurement Module, microprocessor module, driving source bearing, steering engine, electric telescopic rod；
The distance is located at Angle Measurement Module on driving source bearing, and axial length and the radial angle of the driving source bearing are distinguished
It is adjusted by the electric telescopic rod and the steering engine, the telescopic end of the electric telescopic rod is connect with the excitation bearing, described
The fixing end of thermal infrared imager and the electric telescopic rod coordinates and on the annulus matrix；The regulating system is to frequency
The regulating device of rate includes arbitrarily signal generating device, amplifier, the input terminal of the arbitrarily signal generating device at described information
Unit connection is managed, output end is connect with the amplifier, and the amplifier other end is connect with the infrared flare driving source；Institute
Annulus matrix is stated to connect by chaining part and the workbench of mobile mechanism；The reception and transmitting of above equipment information are all to pass through nothing
Line come complete transmission.
4. fan blade according to claim 1 damages sync detection device, which is characterized in that the hydraulic-feed mechanism
Extension and contraction control described in lazy-tongs locking.
5. fan blade according to claim 1 damages sync detection device, which is characterized in that the mobile mechanism uses
Ball screw framework converts the rotary motion of motor in the precision machinery device of workbench linear motion.
6. fan blade failed synchronization detection device according to claim 1, which is characterized in that the lifting mechanism is by lifting
Rising mould block and box elliptic telescopic arm composition, the lifting module includes Triangular Arm, pull rod, hydraulic cylinder assembly；Triangular Arm with
Pull rod is to be arranged symmetrically, and the Triangular Arm lower end is hinged with pan frontward end, and the pull rod lower end is cut with scissors with the Triangular Arm upper end
It connects, the pull rod upper end is hinged with the box elliptic telescopic arm, and the upper end of the hydraulic cylinder assembly and the box are oval
Formula telescopic arm is hinged, and lower end is equal to single with the hinged box elliptic telescopic arm single-unit telescopic arm overall length in the middle part of the Triangular Arm
The sum of extended length and nested lengths are saved, nested parts of the single-unit telescopic arm in previous section telescopic arm are according to the minimum lap of splice
Principle is chosen, and elongation selectes according to the elasticity modulus of selected materials with Poisson's ratio；On the box elliptic telescopic arm
End connection propulsive mechanism.
7. fan blade according to claim 1 damages sync detection device, which is characterized in that described information processing unit
In include the infrared three-dimensional thermography unit of two-dimensional infrared thermography structure, driving source parameter processing unit.
8. fan blade damage inspection sync detection device according to claim 1, which is characterized in that the mechanism is all made of
Bending and compressive strength are in 500Mpa or more, high strength light material of the relative density between 1.0-1.5；Multigroup shifting
Motivation structure, the quantity of the annulus collecting mechanism are identical as the quantity of fan blade.
9. a kind of application method of fan blade damage sync detection device, characterized in that mainly include the following steps that：
(1) first step：
Lifting mechanism starts：The lifting module of lifting mechanism starts, and the lifting angle for lifting module is lifted to 90 ° by 0 ° so that inspection
The vertical position that device is lifted to parallel wind turbine tower from the initial position on parallel ground is surveyed, the elongation of box elliptic telescopic arm waits for
Centering detection module on lazy-tongs central axes detects lazy-tongs matrix central axes and axial fan hub housing axis
When coincidence, box elliptic telescopic arm stops elongation；
(2) second step：
The synchronization of detection device：The hydraulic stem of propulsive mechanism extends, and pushes detection device along axial fan hub housing axis direction, waits for
Axial fan hub shell triggers the sensor of lazy-tongs bottom portion of groove, and delivery device stops push, and lazy-tongs complete diameter at this time
To locking, the hydraulic stem of propulsive mechanism executes recovery command, while triggering intelligent locking apparatus and carrying out axial locking, final synchronous
Mechanism reaches the radial constraint with axial direction of combination；
(3) third walks：
Mobile mechanism runs：Annulus collecting mechanism is sent to fan blade by detection mobile mechanism by initial mobile mechanism end
Wing tip at, mobile mechanism is driven apart from interior to blade root direction with the single feed range of 285mm-400mm, until be transmitted to leaf
Piece blade root；
(4) the 4th steps：
The adjusting of driving source：It is static that testing agency is driven to detection position by mechanism to be moved, and infrared flashlight driving source is adjusted
System is adjusted height, the angle of infrared flashlight driving source with steering engine by electric telescopic rod, infrared flashlight excitation
Source is adjusted with the curved surface variation of fan blade, and infrared flashlight driving source is made to be maintained at 550mm- with a distance from blade
Within the scope of 650mm, actuation duration 30s；The thickness parameter for the blade being loaded into before being detected according to information process unit, information processing
Unit is to the arbitrarily signal generating device transmission data of infrared flashlight driving source regulating system, and arbitrarily signal generating device is through amplifier
Infrared flashlight driving source is sent a signal to, driving frequency is made to adapt to the thickness change of blade different parts；
(5) the 5th steps：
The acquisition of Infrared Thermogram：The same position that multigroup infrared thermoviewer on annulus collecting mechanism completes blade is multidirectional
The acquisition of infrared two dimension thermography, the sample frequency of infrared thermoviewer is within the scope of 5Hz-10Hz, acquisition time 90s, acquisition
Obtained leaf image data transmission is to information process unit；
(6) the 6th steps：
Information process unit handles information：Recycle above-mentioned steps third and fourth, five steps to blade root, information process unit according to
The obtained infrared three-dimensional thermography of image data structure blade is received, and blade injury is analyzed and determined；
(7) the 7th steps：
Device resets：Annulus collecting mechanism is retreated to the initial position of mobile mechanism end soon by mobile mechanism, propulsive mechanism
Hydraulic stem, which is extended to lazy-tongs matching hole internal trigger intelligent locking apparatus, unlocks, and withdraws detection device, lifting mechanism passes through
Box elliptic telescopic arm resets detection device in initial horizontal position with lifting module.
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| CN108343562A (en) * | 2018-02-02 | 2018-07-31 | 长沙理工大学 | A kind of fan blade damage sync detection device |
| CN109580410A (en) * | 2018-12-10 | 2019-04-05 | 湘潭大学 | A kind of equivalent loading device and method of working-blade thermal barrier coating service load |
| CN110222650A (en) * | 2019-06-10 | 2019-09-10 | 华北水利水电大学 | A kind of acoustie emission event classification method based on sound emission all band acquisition parameter |
| CN111829894A (en) * | 2020-06-24 | 2020-10-27 | 山东大学 | Rock-soil multi-field measurement test system and method |
| CN112283050A (en) * | 2020-11-17 | 2021-01-29 | 天津科技大学 | Machine vision-based online monitoring method for wind turbine blade |
| CN116973242A (en) * | 2023-09-22 | 2023-10-31 | 江苏华恬节能科技有限公司 | Polyurethane product high-temperature illumination deformation detection equipment and detection method thereof |
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