CN105822508B - A kind of system for the blade deformation for monitoring wind power plant - Google Patents
A kind of system for the blade deformation for monitoring wind power plant Download PDFInfo
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- CN105822508B CN105822508B CN201610291233.0A CN201610291233A CN105822508B CN 105822508 B CN105822508 B CN 105822508B CN 201610291233 A CN201610291233 A CN 201610291233A CN 105822508 B CN105822508 B CN 105822508B
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- bracing wire
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- measuring device
- signal
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Abstract
The invention discloses a kind of system for the blade deformation for monitoring wind power plant, including at least one bracing wire, at least one measuring device, signal pickup assembly and signal processing apparatus, wherein at least one bracing wire is axially laid with along leaflet inner faces, the nearly blade tip position of leaflet inner faces is fixed in one end of every bracing wire, the other end is connected with one at least one measuring device by flexible member, and with the deformation band dynamic elasticity element of blade extensional motion occurs for bracing wire；At least one measuring device is both secured to the nearly hub positions of leaflet inner faces, and the extensional motion that a bracing wire suitable for being connected according to it drives flexible member to occur exports measuring signal；Signal pickup assembly is connected with least one measuring device and signal processing apparatus respectively, suitable for gathering and transmitting at least one measuring signal of at least one measuring device output to signal processing apparatus；Signal processing apparatus is suitable for the deformation quantity that blade is calculated according at least one measuring signal.
Description
Technical field
The present invention relates to blade state to monitor field, more particularly to it is a kind of monitor wind power plant blade deformation be
System.
Background technology
Wind-power electricity generation is received significant attention as a kind of important renewable new energy.And the blade of wind power plant
As the key position that wind energy is captured in wind power generating set, its health status directly influences the operation of whole wind power system.
The structure and stress of blade are considerably complicated, since the working environment of blade is very severe, spring, summer, autumn and winter, scorching summer and freezing winter, thunder and lightning, ice
Hail, sleet, sand and dust etc. be likely at any time to fan blade produce damage, therefore blade become wind power plant in be easiest to
The position of appearance accident.According to statistics, the accident that blade injury produces accounts for 1/3rd of the total accident of wind turbine.Common fan blade
By the typical fatigue failure such as crackle, layering, gap and unsticking occurs after damaging, these damages are with the fortune of blade
Go and constantly accumulate and eventually result in leaf destruction.During blade produces fatigue failure to fracture, blade is operationally
Strain or deformation in various degree can occur for each several part.Necessary shutdown maintenance during damage accident occurs for usual blade, once while leaf
Piece fractures, then probably damages tower, this will cause the maintenance cost of great number, and very big economic damage is also brought to wind power plant
Lose.Therefore, if the health status of blade can be monitored effectively, machine halt trouble caused by must effectively reducing fan blade, avoids
Produce great economic loss.
At present, the blade of wind power plant, which strains common monitoring means, foil gauge stress monitoring method and fiber grating
Monitoring method etc..These monitoring methods suffer from the defects of it is applicable in type and advantage and disadvantage, its technical requirements is harsher, monitors
Journey is influenced by running environment, weather conditions and other factors, and usually require by complicated detecting instrument equipment and
The intervention of the analysis personnel of specialty can just do result judgement, significantly increase the degree of difficulty of monitoring cost and popularization.
Therefore a kind of scheme of the blade deformation of new monitoring wind power plant is needed.
The content of the invention
In consideration of it, the present invention provides a kind of scheme of the blade deformation of new monitoring wind power plant, to try hard to solve
Certainly or at least alleviate above there are the problem of.
According to an aspect of the invention, there is provided a kind of system for the blade deformation for monitoring wind power plant, including
At least one bracing wire, at least one measuring device, signal pickup assembly and signal processing apparatus, wherein at least one bracing wire edge
Leaflet inner faces are axially laid with, and the nearly blade tip position of leaflet inner faces is fixed in one end of every bracing wire, the other end with it is at least one
One in measuring device is connected by flexible member, and with the deformation band dynamic elasticity element of blade extensional motion occurs for bracing wire；Extremely
A few measuring device is both secured to the nearly hub positions of leaflet inner faces, suitable for the bracing wire band dynamic elasticity member connected according to it
The extensional motion output measuring signal that part occurs；Signal pickup assembly respectively with least one measuring device and signal processing apparatus
Connection, suitable for gathering and transmitting at least one measuring signal of at least one measuring device output to signal processing apparatus；Signal
Processing unit is suitable for the deformation quantity that blade is calculated according at least one measuring signal.
Alternatively, in a system in accordance with the invention, wherein signal processing apparatus is further adapted for judging that the deformation quantity of blade is
It is no to exceed threshold value, if so, then sending alarm.
Alternatively, in a system in accordance with the invention, further include suitable for by bracing wire be fixed on one of leaflet inner faces or
Multiple fixing devices.
Alternatively, in a system in accordance with the invention, wherein fixing device includes and at least one bracing wire position correspondence
At least one through hole or fluting, at least one bracing wire are each passed through corresponding through hole or fluting.
Alternatively, in a system in accordance with the invention, wherein the spacing of every bracing wire is equal.
Alternatively, in a system in accordance with the invention, wherein quality of wire drawing is light, intensity is high and stroke is small.
Alternatively, in a system in accordance with the invention, wherein the equal length of each bar bracing wire.
Alternatively, in a system in accordance with the invention, wherein the length of each bar bracing wire is unequal.
Alternatively, in a system in accordance with the invention, wherein signal processing apparatus is suitable for according at least one measuring signal
Calculate the deformation quantity of blade difference section.
Alternatively, in a system in accordance with the invention, wherein measuring device is pulling force sensor, and measuring signal indicates bracing wire
The pulling force for driving flexible member stretching to produce.
Alternatively, in a system in accordance with the invention, wherein measuring device is displacement sensor, and measuring signal indicates bracing wire
The displacement for driving flexible member stretching to produce.
Alternatively, in a system in accordance with the invention, wherein measuring device is stay-supported type displacement sensor, and the bracing wire is
The bracing wire of stay-supported type displacement sensor.
The scheme of the blade deformation of monitoring wind power plant according to the present invention, by being axially laid with along leaflet inner faces
Bracing wire, and the deformation quantity of blade is obtained by bracing wire with the stretching of blade deformation band dynamic elasticity element, thus can quickly had
Effect and the damage status for reflecting blade each several part in real time, while significantly reduce the cost of monitoring.
Brief description of the drawings
In order to realize above-mentioned and related purpose, some illustrative sides are described herein in conjunction with following description and attached drawing
Face, these aspects indicate the various modes that can put into practice principles disclosed herein, and all aspects and its equivalent aspect
It is intended to fall under in the range of theme claimed.Read following detailed description in conjunction with the accompanying drawings, the disclosure it is above-mentioned
And other purposes, feature and advantage will be apparent.Throughout the disclosure, identical reference numeral generally refers to identical
Component or element.
The system that Fig. 1 shows the blade deformation of monitoring wind power plant according to an illustrative embodiment of the invention
100 structure diagram；
Fig. 2 shows bracing wire schematic diagram when blade according to an illustrative embodiment of the invention is undeformed；
Fig. 3 shows bracing wire schematic diagram during blade deformation according to an illustrative embodiment of the invention；And
Fig. 4 shows the structure diagram of fixing device 150 according to an illustrative embodiment of the invention.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although the disclosure is shown in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
Limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
Completely it is communicated to those skilled in the art.
Blade directly influences whole wind-powered electricity generation as the key position that wind energy is captured in wind power generating set, its health status
The operation of system.The blade of wind power plant is generally very long, and in operation process, each position can all occur under wind-force effect
Different degrees of deformation.And with the growth of blade run time, the fatigue damage of blade can gradually increase, these fatigues
Accumulation can reduce blade reliability of operation, serious, wind turbine can be caused to break down.Therefore, the deformation of blade operationally
The health status for being sized to effectively reflection blade entirety of amount.
The system that Fig. 1 shows the blade deformation of monitoring wind power plant according to an illustrative embodiment of the invention
100 structure diagram.As shown in Figure 1, the system 100 of the blade deformation of monitoring wind power plant includes at least one bracing wire
110th, at least one measuring device 120, signal pickup assembly 130 and signal processing apparatus 140.
Bracing wire 110 is usually light weight, and intensity is high, the small wire rod of stroke, and is axially laid with along leaflet inner faces, wherein
The spacing of every bracing wire can be equal.The nearly blade tip position of leaflet inner faces is fixed in one end of every bracing wire 110, and the position is general
It is the position that blade easily deforms upon.Then measuring device 120 corresponding with one is connected the other end of bracing wire 110 by flexible member
Connect, such as connected by spring, measuring device 120 is then fixed on the nearly hub positions of leaflet inner faces.
The view of bracing wire when Fig. 2 and Fig. 3 respectively illustrates blade normal operation and when blade deforms upon.
It is apparent that when blade deforms upon, the bracing wire 110 being axially laid with can also drive its flexible member connected to stretch therewith
Movement, is transported with bracing wire by the measuring device 120 that flexible member is connected according to the stretching that this bracing wire drives flexible member to occur
Dynamic output measuring signal.Directly closed it is to be appreciated that bracing wire drives the stretching that flexible member occurs to exist with blade deformation degree
System, therefore, can realize the monitoring to blade deformation degree by monitoring the stretching of bracing wire drive flexible member generation.
In actual implementation, the usually sensor, such as pulling force sensor, displacement biography of measuring device 120 of stretching is measured
Sensor etc., the present invention are without limitation.
According to one embodiment of present invention, measuring device 120 is pulling force sensor, when blade deforms upon, bracing wire
Drive flexible member stretching to produce pulling force, touch the pulling force sensor being connected with this bracing wire, pulling force sensor output at this time
Measuring signal instruction bracing wire drives the pulling force that flexible member stretching produces.
According to another embodiment of the invention, measuring device 120 is displacement sensor, when blade deforms upon, is drawn
The stretching of tape dynamic elasticity element produces displacement, touches the pulling force sensor being connected with this bracing wire, and pulling force sensor exports at this time
Measuring signal instruction bracing wire drive flexible member stretching produce displacement.
Wherein, measuring device 120 can also be stay-supported type displacement sensor, accordingly be laid on the bracing wire of leaflet inner faces then
For the stay-supported type displacement sensor bracing wire of itself.
Signal pickup assembly 130 is then connected with least one measuring device 120 and signal processing apparatus 140 respectively, is suitable for
Gather and transmit at least one measuring signal of at least one measuring device output to signal processing apparatus 140.Signal processing device
Put the deformation quantity that the 140 at least one measuring signals gathered according to signal pickup assembly 130 calculate blade.
According to one embodiment of present invention, along leaflet inner faces axially be laid with a bracing wire, bracing wire at this time 110 and leaf
The fixing end of plate inner surface is usually located at blade tip position, is gathered so as to signal processing apparatus 140 according to signal pickup assembly 130
The deformation quantity for the blade that measuring signal calculates can characterize the health degree of blade entirety.
According to another embodiment of the invention, a plurality of bracing wire, the length of a plurality of bracing wire are axially laid with along leaflet inner faces
Can be identical, i.e., the fixing end of all bracing wires and leaflet inner faces is located in same cross-sectional periphery.Signal processing apparatus 140 at this time
The deformation quantity of multiple blades can be calculated according to multiple measuring signals that signal pickup assembly 130 gathers, improves result
Accuracy.
According to another embodiment of the invention, the length of a plurality of bracing wire of laying can be different, i.e., all bracing wires and leaf
The fixing end of plate inner surface is located in different cross-sectional peripheries respectively, as shown in Figure 1.Signal processing apparatus 140 can root at this time
The multiple measuring signals gathered according to signal pickup assembly 130 calculate the deformation quantity of blade difference section, and it is different to characterize blade respectively
The health degree of section.
Further, signal processing apparatus 140 can also judge whether the deformation quantity of blade exceedes threshold value, if so, then sending out
Go out alarm, instruction wind power plant notifies staff's unit exception while out of service.Here threshold value can basis
What the normal variation scope for the deformation quantity that blade occurs in normal operation and bracing wire occurred when with blade movement can not keep away
Systematic error caused by the swing exempted from is set.
The principle for calculating blade deformation quantity is specifically described by taking displacement sensor as an example below.
Displacement sensor exports measuring signal X, and signal pickup assembly 130 gathers the signal and is transmitted to signal processing apparatus
140, the wherein displacement of X, that is, end of pulling.Signal processing apparatus 140 passes through mapping relations：(wherein A is amendment system to Y=AX
Number, Y represent blade deformation quantity), signal out will be transmitted and be converted to the deformation quantity signal of blade, so as to reach to blade deformation
The on-line monitoring of amount.
Further, as shown in Figure 1, the bracing wire length being laid with differs, thus the deformation quantity of blade part segmentation can be realized.
For example, bracing wire D fixed positions are collected in Fig. 1 to blade-shaped the variable data Yd, Yi Jila between sensor fixed position
Line C fixed positions are to the blade-shaped variable data Yc between sensor fixed position.By Z=B (Ya-Yb), (wherein B is amendment
Coefficient, Ya and Yb represent respectively different sensors monitoring blade deformation quantity) mapping relations, signal processing apparatus 140 can
The shape of part between bracing wire D fixed positions and bracing wire C fixed positions on blade to be calculated according to deformation quantity data Yd and Yc
Variable Zc-d.
In addition, the consideration inevitably swung laterally when with blade movement based on bracing wire, according to the present invention
A further embodiment, system 100 can also include one or more fixing devices 150, which will can draw
Line is fixed on leaflet inner faces, the bracing wire of arrangement is moved along fixed axial trajectory, avoids bracing wire when with blade movement
The faint swing of generation, and wound during a plurality of bracing wire of laying between a plurality of bracing wire, and scene is easily installed to different drawings
The identification of line.
Fig. 4 shows the structure diagram of fixing device 150 according to an illustrative embodiment of the invention.Fixing device
150 can be fixed on leaflet inner faces with bonding agent or other reliable fixing means, and including with least one bracing wire position
Corresponding at least one through hole.Each bar bracing wire is each passed through corresponding through hole, is moved along fixed axial trajectory.Except this it
Outside, fixing device 150 can also include at least one fluting (similar with through hole) with least one bracing wire position correspondence, also may be used
To play the effect of fixed bracing wire tracks, the present invention is same without limitation.
In conclusion wind power plant is generally located at the field that wind resource enriches, Service Environment is severe, and stand under load is complicated, zero
The maintenance of part and monitoring cost are higher.And blade is as component important in wind power plant, the direct shadow of its reliability
Ring the normal operation to wind power plant.Many great wind turbine accidents all originate from leaf destruction, if can be to blade fragment
Split progress effective monitoring and will be avoided that and accident occurs, be significantly reduced loss.The present invention is mainly by arranging that bracing wire is directly perceived, effective
The deformation quantity occurred during ground detection vane stress, so as to achieve the purpose that to blade health monitoring.Meanwhile the present invention
System it is simple, stablize, be reliable, install convenient, significantly reduces the strain on-line monitoring cost of blade.
In the specification that this place provides, numerous specific details are set forth.It is to be appreciated, however, that the implementation of the present invention
Example can be put into practice in the case of these no details.In some instances, known method, knot is not been shown in detail
Structure and technology, so as not to obscure the understanding of this description.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand one or more of each inventive aspect,
Above in the description to the exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
The application claims of shield are than the feature more features that is expressly recited in each claim.More precisely, as following
As claims reflect, inventive aspect is all features less than single embodiment disclosed above.Therefore, abide by
Thus the claims for following embodiment are expressly incorporated in the embodiment, wherein each claim is in itself
Separate embodiments as the present invention.
Those skilled in the art should understand that the module or unit or group of the equipment in example disclosed herein
Part can be arranged in equipment as depicted in this embodiment, or alternatively can be positioned at and the equipment in the example
In different one or more equipment.Module in aforementioned exemplary can be combined as a module or be segmented into addition multiple
Submodule.
Those skilled in the art, which are appreciated that, to carry out adaptively the module in the equipment in embodiment
Change and they are arranged in one or more equipment different from the embodiment.Can be the module or list in embodiment
Member or component be combined into a module or unit or component, and can be divided into addition multiple submodule or subelement or
Sub-component.In addition at least some in such feature and/or process or unit exclude each other, it can use any
Combination is disclosed to all features disclosed in this specification (including adjoint claim, summary and attached drawing) and so to appoint
Where all processes or unit of method or equipment are combined.Unless expressly stated otherwise, this specification (including adjoint power
Profit requires, summary and attached drawing) disclosed in each feature can be by providing the alternative features of identical, equivalent or similar purpose come generation
Replace.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included some features rather than further feature, but the combination of the feature of different embodiments means in of the invention
Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed
One of meaning mode can use in any combination.
Present invention additionally comprises：A5, the system as described in A1, wherein the spacing of every bracing wire is equal.In A7, such as A1-6
Any one of them system, wherein the equal length of each bar bracing wire.
In addition, be described as herein can be by the processor of computer system or by performing for some in the embodiment
The method or the combination of method element that other devices of the function are implemented.Therefore, have and be used to implement the method or method
The processor of the necessary instruction of element forms the device for being used for implementing this method or method element.In addition, device embodiment
Element described in this is the example of following device：The device is used to implement as in order to performed by implementing the element of the purpose of the invention
Function.
As used in this, unless specifically stated, come using ordinal number " first ", " second ", " the 3rd " etc.
Description plain objects are merely representative of the different instances for being related to similar object, and are not intended to imply that the object being so described must
Must have the time it is upper, spatially, in terms of sequence or given order in any other manner.
Although according to the embodiment of limited quantity, the invention has been described, benefits from above description, the art
It is interior it is clear for the skilled person that in the scope of the present invention thus described, it can be envisaged that other embodiments.Additionally, it should be noted that
The language that is used in this specification primarily to readable and teaching purpose and select, rather than in order to explain or limit
Determine subject of the present invention and select.Therefore, in the case of without departing from the scope and spirit of the appended claims, for this
Many modifications and changes will be apparent from for the those of ordinary skill of technical field.For the scope of the present invention, to this
The done disclosure of invention is illustrative and not restrictive, and it is intended that the scope of the present invention be defined by the claims appended hereto.
Claims (11)
1. it is a kind of monitor wind power plant blade deformation system, including at least one bracing wire, at least one measuring device,
Signal pickup assembly and signal processing apparatus, wherein
At least one bracing wire is axially laid with along leaflet inner faces, and it is near that the leaflet inner faces are fixed in one end of every bracing wire
Blade tip position, the other end are connected with one at least one measuring device by flexible member, and the bracing wire is with blade
Deformation drive the flexible member that extensional motion occurs, wherein the spacing of every bracing wire is equal；
At least one measuring device is both secured to the nearly hub positions of leaflet inner faces, suitable for the bracing wire connected according to it
Drive the extensional motion output measuring signal that flexible member occurs；
The signal pickup assembly is connected with least one measuring device and the signal processing apparatus respectively, suitable for collection
And at least one measuring signal of at least one measuring device output is transmitted to the signal processing apparatus；
The signal processing apparatus is suitable for the deformation quantity that the blade is calculated according at least one measuring signal.
2. the system as claimed in claim 1, wherein the signal processing apparatus is further adapted for judging that the deformation quantity of the blade is
It is no to exceed threshold value, if so, then sending alarm.
3. the system as claimed in claim 1, further includes fixed suitable for bracing wire to be fixed on to the one or more of leaflet inner faces
Device.
4. system as claimed in claim 3, wherein the fixing device is included with least one bracing wire position correspondence at least
One through hole or fluting, at least one bracing wire are each passed through corresponding through hole or fluting.
5. the system as claimed in claim 1, wherein the quality of wire drawing is light, intensity is high and stroke is small.
6. such as the system any one of claim 1-5, wherein the equal length of each bar bracing wire.
7. such as the system any one of claim 1-5, wherein the length of each bar bracing wire is unequal.
8. system as claimed in claim 7, wherein the signal processing apparatus is suitable for according at least one measuring signal
Calculate the deformation quantity of blade difference section.
9. such as the system any one of claim 1-5, wherein the measuring device is pulling force sensor, the measurement is believed
Number instruction bracing wire drives the pulling force that flexible member stretching produces.
10. such as the system any one of claim 1-5, wherein the measuring device is displacement sensor, the measurement
Bracing wire described in signal designation drives the displacement that flexible member stretching produces.
11. system as claimed in claim 10, wherein the measuring device is stay-supported type displacement sensor, the bracing wire is drawing
The bracing wire of wire type displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610291233.0A CN105822508B (en) | 2016-04-29 | 2016-04-29 | A kind of system for the blade deformation for monitoring wind power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610291233.0A CN105822508B (en) | 2016-04-29 | 2016-04-29 | A kind of system for the blade deformation for monitoring wind power plant |
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| CN105822508A CN105822508A (en) | 2016-08-03 |
| CN105822508B true CN105822508B (en) | 2018-04-13 |
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| CN201610291233.0A Active CN105822508B (en) | 2016-04-29 | 2016-04-29 | A kind of system for the blade deformation for monitoring wind power plant |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106500613B (en) * | 2016-10-17 | 2018-12-18 | 合肥科博软件技术有限公司 | A kind of apparatus and system for the blade deformation monitoring wind power plant |
| CN108468650A (en) * | 2018-03-06 | 2018-08-31 | 傅小燕 | Improve the electric fan of security performance |
| CN108397407B (en) * | 2018-03-06 | 2019-11-15 | 浙江夏品工贸有限公司 | A kind of electric fan |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2215355A2 (en) * | 2007-11-30 | 2010-08-11 | Innovative Windpower AG | Method for regulating the electrical load of a wind power system |
| CN101839216B (en) * | 2010-05-11 | 2015-04-01 | 无锡风电设计研究院有限公司 | Intelligent blade of wind power generator with strain sensors |
| CN103267473B (en) * | 2013-04-17 | 2015-09-30 | 哈尔滨工程大学 | A kind of blade of vertical axis wind turbine deflection measuring apparatus |
| CN205744305U (en) * | 2016-04-29 | 2016-11-30 | 安徽容知日新科技股份有限公司 | A kind of system of the blade deformation monitoring wind power plant |
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