CN207366507U - The in-service ultrasonic nondestructive testing device of wind turbine paddle - Google Patents
The in-service ultrasonic nondestructive testing device of wind turbine paddle Download PDFInfo
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- CN207366507U CN207366507U CN201721338677.1U CN201721338677U CN207366507U CN 207366507 U CN207366507 U CN 207366507U CN 201721338677 U CN201721338677 U CN 201721338677U CN 207366507 U CN207366507 U CN 207366507U
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Abstract
The in-service ultrasonic nondestructive testing device of wind turbine paddle, including ultrasound transmitter device, ultrasonic receiver, data collector, back-end data processor, ultrasound transmitter device and ultrasonic receiver are separately mounted on the inside of wind turbine paddle cavity in the layout points of networking layout, effective transmitting range of the spacing and ultrasound transmitter device of ultrasound transmitter device and ultrasonic receiver matches, ultrasonic receiver is connected with data collector, and data collector is connected with back-end data processing.The layout points of networking layout can be quadrangle or the node of hexagonal mesh shape, and ultrasonic transmission can use one debit's formula of hair, can also use pulse return pattern.Monitoring ultrasonic has the advantages that small, cost is low, efficient, pollution-free, harmless.The utility model can monitor existing wind turbine paddle state automatically, once finding disrepair phenomenon, can give warning in advance, significantly reduce the O＆M cost of wind-powered electricity generation industry.
Description
Technical field
A kind of wind turbine paddle ultrasonic nondestructive testing device is the utility model is related to, it is more particularly to a kind of to use
Ultrasonic detection technology carries out the breakage of the in-service generation of wind-driven generator paddle and flaw in the device of Non-Destructive Testing.
Background technology
Wind-power electricity generation is as technology in new energy field is most ripe, the power generation side of on the largest scaleization and commercialized development prospect
Formula, has the advantages that cleaning, renewable, environmental benefit is good, is regenerative resource with the fastest developing speed in the world in recent years.
According to《China Power development report 2016》It has been shown that, for Wind Power In China scale in 2016 up to 148,640,000 kilowatts, accounting improves 9%, is sure to occupy
The third-largest power supply in China.
With the fast development of wind energy and installing and using extensively for Wind turbines, the operation troubles problem of Wind turbines is increasingly
It is prominent.Since Wind turbines are installed at the air ports such as high mountain, wilderness, seabeach, island, it is exposed to the elements throughout the year, scorching summer and freezing winter
With the influence of extreme difference in temperature so that Wind turbines Frequent Troubles.The safe and stable of Wind turbines, failure-free operation not only can be with
Stable supply of electric power is provided, the cost of wind-powered electricity generation can also be greatly reduced, is the key link that whole industrial chain develops in a healthy way.Mesh
The maintenance mode that preceding wind field is taken is mostly periodic maintenance and correction maintenance.Since wind turbine majority is arranged in remote districts, inspection every time
Repair and take time and effort so that the maintenance cost of Wind turbines remains high for a long time.
The accident statistics data of Wind turbines (provide http by wind power plant Keyes's Nei Si information forum://
Www.caithnesswindfarms.co.uk/AccidentStatistics.htm) show annual wind-powered electricity generation accident in rising
Trend (Figure 1).Keyes Nei Si forums point out that the statistics is to use the accident of Liao You officials and news report, institute
May be more much higher than the data with actual accident quantity.The statistics shows that the accident that Wind turbines occur most frequently is
Blade injury.From 1996 to 2017, a total of 370 declaration of an accident triggered due to blade injury.Wind power generation unit blade
Damage in operation can mainly show as trailing edge cracking, face checking, trailing edge damage, blade tip cracking etc..Its reason may have
Lightning stroke, fatigue load effect, structure genetic defects etc..The length of blade of large-scale wind electricity unit reaches 2m up to 60m, blade root diameter.
Blade injury often shows as the cracking of the trailing edge near blade tip and blade tip.The original width very little (about 1mm) in crack, but with
The operation of wind turbine, the length in crack are easy to extend.Some typical cracking situations are as shown in Figure 2.So blade is strong
It is particularly important that health monitors.This project is exactly to design the online real time health monitoring system of fan blade.
Wind power generation unit blade monitoring technology belong to monitoring structural health conditions (Structural Health Monitoring,
Abbreviation SHM) one kind.SHM is in recent ten years in Non-Destructive Testing (Non Destructive Testing, abbreviation NDT；Or
Non Destructive Evaluation, abbreviation NDE) on the basis of the intelligent monitoring means that grow up.Non-Destructive Testing
It is on the premise of structure and material is not damaged, data acquisition and assessment is carried out to the surface and internal state for being examined structure
A kind of detection means.
The sensor of network type is installed on monitoring of structures (such as aircraft, train) by monitoring structural health conditions, is formed similar
In the neural sensory perceptual system of human body, structure is given with real perception, realizes and obtains data in structure operational regime.When
When there is unusual condition, system can make intelligent decision, issue warning signal in real time, for structural maintenance and administrative decision provide according to
According to and instruct.
Structural healthy monitoring system can improve the security performance of system.Real-time and accurately decision structure in the process of running
State, when there is unusual condition, send early warning in advance, the generation for the accident that averts a calamity.And reduce human factor and cause
Wrong diagnosis, so as to substantially increase the reliability of system.
Intellectual structure health monitoring system can be with the O＆M efficiency of optimization system.Intelligence structure health monitoring is in structural health
On the basis of monitoring, intelligent decision further is provided for structural maintenance by data fusion and nitrification enhancement, regular dimension
Repair and be changed into foresight maintenance.Foresight maintenance can greatly improve efficiency of operation, reduce labour cost, unexpected failure is reduced
To minimum degree, premature repairs or replacement is avoided to cause unnecessary waste, so that the effectively service life of extending structure.
Structural health monitoring technology substantially experienced three developing stage：First stage on the basis of NDT, sensor
It is integrated in data acquisition in structure, simple data processing is made to diagnosis information, the volume of system is bigger, data processing phase
To simple；Second stage is then the volume-diminished of sensor and data acquisition, to improve integrated level, the speed of data processor
Also increase, so as to carry out more complicated signal processing or modeling, be widely used at present in engineering；
As the leap of sensor technology and volume constantly reduce, mechanism health monitoring is entered to be combined with multiple sensors, a variety of
Data transfer is combined, the three phases that networked data processing, signal processing are combined with intelligence learning.
In the 1970s and the eighties, ocean platform begins one's study the damnification recognition method based on vibration.Due to sea
The cost of foreign platform structure to in-site measurement is very high, cycle length, so there is an urgent need to can carry out health monitoring online.Monitoring
Basic skills is the change of the resonant frequency produced by measure analog signals, and the damage of signal intensity and structure is associated to come
Tested.
Monitoring structural health conditions start to be widely used in multiple industries in recent ten years.Bridge, building, wind-powered electricity generation etc. are civilian
Construction industry uses a variety of passive sensors, including accelerometer, anemoclinograph, displacement meter, thermometer, strain gauge, shakes
Dynamic sensor etc., infers the overall state of structure indirectly by the parameter of collection.
Aerospace, railway transportation equipment, pipeline, container, track etc., also begin to using passive sensor and active
Sensor such as ultrasonic technique carries out autotelic scanning to structure.U.S. NASA is compound by fiber optic sensor network embedment carbon fiber
Material aircraft skin, makes material have perception and judgment.The new long haul aircraft of airbus is equipped with airplane tail group
Redundant sensor, and it is mounted with airplane tail group health instruction system in flight-deck, improve overall security.Utilize ultrasonic skill
The burn into that art can effectively detect oil pipeline by measuring the thickness of tube wall ruptures equivalent damage.
Utility model content
The purpose of this utility model is to provide a kind of automatic detection device for in-service wind turbine paddle, can exist in real time
Damage, hole, crackle and the gauffer situation of detection blower fan paddle are used as a servant, to ensure the safe handling of wind turbine paddle.
The utility model is realized in this way：
The in-service ultrasonic nondestructive testing device of wind turbine paddle, including ultrasound transmitter device, ultrasonic receiver, data acquisition
Device, back-end data processor, it is characterized in that ultrasound transmitter device and ultrasonic receiver are separately mounted in wind turbine paddle cavity
Side is in the layout points of networking layout, and the effective of the spacing and ultrasound transmitter device of ultrasound transmitter device and ultrasonic receiver sends out
Penetrate distance to match, ultrasonic receiver is connected with data collector, and data collector is connected with back-end data processing.
Further, the in-service ultrasonic nondestructive testing device of wind turbine paddle, it is characterized in that networking layout
Layout points are the nodes of quadrilateral mesh shape
Further, the in-service ultrasonic nondestructive testing device of wind turbine paddle, it is characterized in that networking layout
Layout points are the nodes of hexagonal mesh shape
Further, the in-service ultrasonic nondestructive testing device of wind turbine paddle, it is characterized in that ultrasound transmitter device and super
Sound wave recipient is androgynous to be installed at the layout points on the inside of wind turbine paddle cavity in networking layout.
The in-service ultrasonic nondestructive testing device of the utility model fan blade uses ultrasonic examination technical principle, is direct
A kind of most effective detection method of detecting structure situation.Ultrasonic examination be when utilizing ultrasonic propagation wave reflections and
The energy variation penetrated carrys out the lossless detection method with surface defect inside experimental material.Compare, surpass with conventional range estimation flaw detection
Sonic flaw detection can monitor range estimation flaw detection monitoring less than inside configuration state.For example, metal is caused due to fatigue
Underbead crack, the layering of new composite inner and crack can be effectively monitored with ultrasonic scanning.With X
Radiographic inspection is compared, and ultrasonic examination has the advantages that small, cost is low, efficient, pollution-free, harmless.
Ultrasonic wave can not reflected at two kinds on the interface of the medium of acoustic impedance.The size of the energy reflected with
The difference of interface both sides medium acoustic impedance is related with orientation, the size of interface.Pulse reflection supersonic detector is exactly
Design around this principle.It is similar in the structure there are the defects of, cause the interface between a scarce different medium, hand over
Acoustic impedance between interface is different, and when the ultrasonic wave of transmitting runs into this defect, waveform distortions and reflection will occur.
For same uniform dielectric, the arrival time of impulse wave to apart from directly proportional.Therefore defect can be judged by the appearance of flaw indication
Presence；The position of defect can be determined by the time that flaw indication occurs；Defect is judged by the amplitude of flaw indication
Equivalent size.
Ultrasonic signal not only produces surface wave, also produces penetrated wave.Multiple ultrasonic exciting sources and receiver are distributed
In body structure surface or assembly in inside configuration, ultrasonic wave is produced by multiple driving sources, receives transmitting in multiple sensors that receive
Pumping signal, it is possible to form the sensor network of a monitored structure of covering.By being modeled to the data of ultrasound
Or data processing, it is possible to assess the body structure surface and inside whether there is defect.
The utility model can be applied directly to domestic tens thousand of on the wind turbine of operation, including offshore wind farm, energy
It is enough to monitor the existing in-service state of wind turbine paddle automatically, once find wind turbine paddle flaw, such as phenomena such as crackle, hole and gauffer,
It can give warning in advance, the generation for the accident that averts a calamity.Reduce the cycle of manpower maintenance, significantly reduce the fortune of wind-powered electricity generation industry
Tie up cost.
The utility model can also be directly installed on new wind turbine, as the standard configuration of wisdom wind turbine of new generation, not only
Security performance, optimization O＆M efficiency can be improved, lower O＆M cost, all kinds of parameters of fan operation can also be gathered in real time,
Extremely valuable reference data is provided for the design, production, O＆M of wind turbine.
As the important component of clean energy resource, foreign countries are also greatly developing Wind Power Generation Industry.This item purpose achievement in research,
Technical merit is leading in the world, has very big potentiality to be generalized to overseas market.
Brief description of the drawings
Fig. 1 is pulse-echo ultrasound ripple transmission mode schematic diagram；
Fig. 2 receives ultrasonic transmission mode and networking schematic layout pattern for a hair one；
Fig. 3 is the grid schematic layout pattern of ultrasound transmitter device and ultrasonic receiver in wind turbine paddle.
In figure：11- ultrasonic sensors, (21,22,23,24)-ultrasound transmitter device, (31,32,33)-ultrasonic wave receive
Device, (41,42,43)-flaw.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment further illustrates the utility model.
The in-service ultrasonic nondestructive testing device of the utility model wind turbine paddle, including ultrasound transmitter device, ultrasonic wave receive
Device, data collector, back-end data processor, it is characterized in that ultrasound transmitter device and ultrasonic receiver are separately mounted to wind turbine
In the layout points of networking layout, the spacing and ultrasonic wave transmission of ultrasound transmitter device and ultrasonic receiver on the inside of paddle cavity
Effective transmitting range of device matches, and ultrasonic receiver is connected with data collector, and data collector is handled with back-end data
Connection.
In the in-service working status of monitoring wind turbine paddle, ultrasonic wave work can use two ways, and a kind of mode is called
Pulse echo (Pulse-echo), another way are called a hair one and receive (Pitch-catch).
Pulse echo (Pulse-echo) pattern is mainly used to monitor the back wave of pumping signal, as shown in Figure 1.In pulse
Under echo (Pulse-echo) pattern, single sonac transmitting pumping signal can be used, while connect with this sensor
Responded, as shown in Fig. 1 (a).Two sonacs being packaged together are can also use, one is used for launching, a use
To receive, if Fig. 1 is (shown in (b).Two ways respectively has quality.When using a sensor internal loopback, cost can drop
Low, the quantity of line will be lacked, while volume is also small.Shortcoming is that the pumping signal sent can dock the collection of letters number generation interference, docking
The antijamming capability for receiving circuit requires height.When using two sensors, pumping signal can be preferably eliminated to receiving
The interference of signal, shortcoming are then the cost for increasing sensor, line and volume.Pulse-echo (pulse echo) is anti-by signal
Penetrate, cause to decay more, so being usually used in the monitoring from the nearlyer orientation of sensor.
One hair one receives the then mainly change on monitoring signal transmission path of (Pitch-catch) pattern.Received in a hair one
(Pitch-catch) under pattern, two sonacs are separated by a distance, and a sensor is used for sending, another use
To receive.Pitch-catch uses network-type distribution, as shown in Figure 2.When there is damage on the path in signal transmission, receive
The signal of sensor will produce corresponding change.One hair one is received under (Pitch-catch) mode, and receiving sensor is directly extracted
The signal of emission sensor, it is not necessary to reflect, so transmission range is farther, can be used for the monitoring of long range.
According to ultrasonic sensor monitor two ways, the utility model proposes grid placement scheme, can be at the same time
Arrangement ultrasonic sensor is integrated using two kinds of monitoring modes, single can also use a kind of monitoring mode.Four sides
The grid node of shape is the crosspoint of co-ordination, and the node of hexagonal mesh is the angle point of hexagon.
The selection of the networking layout placement point of ultrasonic sensor, can be by the arrangements of rule, such as network of quadrilaterals
The node of lattice, or the node of hexagonal mesh, can also can also be as needed by irregular arrangements, its density degree
To select.Such as can be with the setting layout points of comparatively dense in the windward side of wind turbine paddle and easily damaged position.
Data collection and analysis：, it is necessary to be analyzed and processed accordingly after ultrasonic instrument data acquisition.Data analysis is most
Common method is energy comparison.At the normal position of wind turbine paddle, the reception waveform of ultrasonic wave has certain energy.In wind
The abnormal position of machine paddle, waveform can produce change with normal waveform.By calculating the size of change energy, with history
The fault threshold of experience compared to pair, it is possible to judge the state of wind turbine paddle.
The above descriptions are merely exemplary embodiments of the present utility model, is not limited to the model of the utility model
Enclose.Any those skilled in the art, the equivalent variations made on the premise of the design of the utility model and principle is not departed from
With modification, the scope that the utility model is protected should all be belonged to.
Claims (4)
1. the in-service ultrasonic nondestructive testing device of wind turbine paddle, including ultrasound transmitter device, ultrasonic receiver, data acquisition
Device, back-end data processor, it is characterized in that ultrasound transmitter device and ultrasonic receiver are separately mounted in wind turbine paddle cavity
Side is in the layout points of networking layout, and the effective of the spacing and ultrasound transmitter device of ultrasound transmitter device and ultrasonic receiver sends out
Penetrate distance to match, ultrasonic receiver is connected with data collector, and data collector is connected with back-end data processing.
2. according to the in-service ultrasonic nondestructive testing device of wind turbine paddle described in claim 1, it is characterized in that the networking is laid out
Layout points be quadrilateral mesh shape node.
3. according to the in-service ultrasonic nondestructive testing device of wind turbine paddle described in claim 1, it is characterized in that the networking is laid out
Layout points be hexagonal mesh shape node.
4. according to the in-service ultrasonic nondestructive testing device of wind turbine paddle described in claim 1, it is characterized in that ultrasound transmitter device and
Ultrasonic receiver is androgynous to be installed at the layout points on the inside of wind turbine paddle cavity in networking layout.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721338677.1U CN207366507U (en) | 2017-10-18 | 2017-10-18 | The in-service ultrasonic nondestructive testing device of wind turbine paddle |
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| CN201721338677.1U CN207366507U (en) | 2017-10-18 | 2017-10-18 | The in-service ultrasonic nondestructive testing device of wind turbine paddle |
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| CN207366507U true CN207366507U (en) | 2018-05-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946381A (en) * | 2019-01-08 | 2019-06-28 | 南京质联智能科技有限公司 | A kind of detection method and device |
| CN110500982A (en) * | 2019-08-30 | 2019-11-26 | 南昌大学 | A kind of parallel connection staggered form surface cracks Landslide Forecast System |
| CN112649498A (en) * | 2019-10-12 | 2021-04-13 | 中国石油化工股份有限公司 | Leakage pollution risk monitoring system and method for in-service refinery enterprise storage and transportation device |
-
2017
- 2017-10-18 CN CN201721338677.1U patent/CN207366507U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109946381A (en) * | 2019-01-08 | 2019-06-28 | 南京质联智能科技有限公司 | A kind of detection method and device |
| CN110500982A (en) * | 2019-08-30 | 2019-11-26 | 南昌大学 | A kind of parallel connection staggered form surface cracks Landslide Forecast System |
| CN112649498A (en) * | 2019-10-12 | 2021-04-13 | 中国石油化工股份有限公司 | Leakage pollution risk monitoring system and method for in-service refinery enterprise storage and transportation device |
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