CN108152130A - Three side method wind electricity blade static test methods - Google Patents
Three side method wind electricity blade static test methods Download PDFInfo
- Publication number
- CN108152130A CN108152130A CN201711160881.3A CN201711160881A CN108152130A CN 108152130 A CN108152130 A CN 108152130A CN 201711160881 A CN201711160881 A CN 201711160881A CN 108152130 A CN108152130 A CN 108152130A
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- CN
- China
- Prior art keywords
- wind electricity
- electricity blade
- test point
- puller system
- test
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0033—Weight
Abstract
The present invention provides a kind of three side method wind electricity blade static test methods, it can simply, quickly and accurately realize the measurement and calculating of the load angle required in GL specifications, amount of deflection, torque, the test of the key parameters such as load angle, amount of deflection and torque during static loading experiment can be solved using equipment such as the existing puller system in laboratory, fixture, tape measures, entire method is easy to operate, measurement error is small.
Description
Technical field
The present invention relates to a kind of three side method wind electricity blade static test methods.
Background technology
As the traditional fossil energies such as coal, oil, natural gas exhaust increasingly closing on for timetable, the development and utilization of wind energy
The attention of people is increasingly obtained, wind energy, nuclear energy and solar energy become three big clean energy resourcies side by side.Wherein, blade is wind-force hair
Core component in electric equipment.With the growth requirement in market, the renewal speed of the blade profile of present blade is very fast.According to GL
Code requirement, fan blade must could enter the normal production phase by test process such as static(al)s.Blade carries out static(al) test
When, it is necessary to when load force reaches 100%, strain value when measuring and calculating deformable blade, is scratched at load angle
The physical quantitys such as degree, torque.So in the static loading experiment of wind electricity blade, how quick and correct measurement strain value, loading angle
The physical quantitys such as degree, amount of deflection, torque are a key technologies.
Invention content
The technical problems to be solved by the invention are to overcome the static load reality of the prior art lacked in wind electricity blade
In testing the defects of the method for physical quantitys such as quick and correct measurement strain value, load angle, amount of deflection, torque, and provide one kind three
Side method wind electricity blade static test method.
The present invention solves above-mentioned technical problem by the following technical programs：
The present invention provides a kind of three side method wind electricity blade static test methods, include the following steps：
The root of wind electricity blade is fixed on test fixed station, the axis horizontal of the wind electricity blade is placed；
At least one test point is set on the wind electricity blade；
In the test point installs fixture of the wind electricity blade, the fixture is connected by connecting rope with puller system, described
Puller system is located at the top of the wind electricity blade；
Foil gauge is sticked on the surface of the test point of the wind electricity blade；
The puller system pulls the fixture, and the fixture drives the wind electricity blade bending；
The foil gauge measures the strain value on the surface of the wind electricity blade；
The change in location of the test point is measured, and calculates the load angle of the test point, amount of deflection；
The puller system measures tensile load, and the torque of the test point is calculated by the tensile load；
Strain value that the foil gauge is measured, calculate gained the test point load angle, amount of deflection and torque, with
Standard value compares, and judges whether the wind electricity blade meets specification.
It, can quickly and correct measurement goes out strain value, load angle, scratches by the above method in the technical program
Degree and torque, after comparing with standard value, you can judge whether wind electricity blade meets specification.
Preferably, the puller system pulls the fixture, the fixture drives the wind electricity blade bending；Including：
The puller system pulls the fixture, preloads 40% value of thrust；
Determine it is ready after, the puller system continues to load, until the tensile load be 100% value of thrust.
In the technical program, by taking the form of preloading, the stability and reliability of static loading experiment ensure that.
Preferably, the strain value that the foil gauge measures sends signal acquiring system to, the signal acquiring system is by institute
The strain value for stating foil gauge acquisition is converted to strain data and the strain data is transferred to processor, the processor storage
And handle the strain data.
In the technical program, strain value is after processor is handled, dependent variable that tester can directly read that treated
According to, and compared with standard value.
Preferably, measuring the change in location of the test point, and calculate the load angle of the test point, amount of deflection；It is described
The calculating of load angle, including：
The coordinate points after the completion of the test point loads are set as A ', the coordinate points of the puller system are B；
Setup algorithm datum mark is C, and straight line BC is parallel with the axis of the wind electricity blade；
The load angle
In the technical program, load angle α can be rapidly and accurately measured, then by load angle α and and standard value
It compares, you can judge whether wind electricity blade meets specification.
Preferably, measuring the change in location of the test point, and calculate the load angle of the test point, amount of deflection；It is described
The calculating of amount of deflection, including：
The coordinate points before the test point does not load are set as A, the coordinate points after the completion of test point loading are A ', institute
The coordinate points for stating puller system are B；
Setup algorithm datum mark is C, and straight line BC is parallel with the axis of the wind electricity blade；
It calculates
Calculate amount of deflection D=AB × cosB-A ' B × cosB.
In the technical program, by the above method, can rapidly and accurately measure amount of deflection D, then by amount of deflection D and with mark
Quasi- value compares, you can judges whether wind electricity blade meets specification.
Preferably, the puller system measures tensile load, the torque of the test point is calculated by the tensile load；Packet
It includes：
The coordinate points after the completion of the test point loads are set as A ', the coordinate of A ' is (x1,z1), the seat of the puller system
Punctuate is B, and the coordinate of B is (x2,z2)；
The puller system measures tensile load F；
Calculate torque
In the technical program, by the above method, can rapidly and accurately measure torque M, then by torque M and with mark
Quasi- value compares, you can judges whether wind electricity blade meets specification.
Preferably, the measurement of the change in location of the test point is measured by tape measure or laser testing instrument.
In the technical program, by using tape measure or laser testing instrument, the position of test point can be rapidly and accurately measured
Put variation.
Preferably, the quantity of the test point is multiple, multiple test points are arranged along the axis of the wind electricity blade.
In the technical program, each test point corresponds to a puller system and a fixture, passes through above-mentioned three sides method wind electricity blade
Static test method can measure strain value, load angle, amount of deflection and the torque of each test point.
Preferably, the puller system is equipped with pulling force sensor, the tensile load of the puller system is by the pull sensing
Device measures.
In the technical program, by pulling force sensor, the tensile load of puller system can be timely and accurately tested out.
On the basis of common knowledge of the art, above-mentioned each optimum condition can be combined arbitrarily to get each preferable reality of the present invention
Example.
The positive effect of the present invention is：
The three sides method wind electricity blade static test method can simply, quickly and accurately realize that is required in GL specifications adds
The measurement and calculating of angle, amount of deflection, torque are carried, can be solved using equipment such as the existing puller system in laboratory, fixture, tape measures
The test of the key parameters such as load angle, amount of deflection and torque during static loading experiment, entire method is easy to operate, measurement error
It is small.
Description of the drawings
Fig. 1 is the test device schematic diagram of three side method wind electricity blade static test methods of the invention.
Fig. 2 is the partial enlarged view of test device shown in FIG. 1.
Fig. 3 is the schematic diagram calculation of three side method wind electricity blade static test methods of the invention.
Reference sign
Wind electricity blade 1
Test fixed station 2
Fixture 3
Connecting rope 4
Puller system 5
Foil gauge 6
Signal acquiring system 7
Processor 8
Tape measure 9
Specific embodiment
It is further illustrated the present invention below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.
As shown in Figure 1 to Figure 2, three side method wind electricity blade static test methods of the invention, include the following steps：
The root of wind electricity blade 1 is fixed on test fixed station 2, the axis horizontal of wind electricity blade 1 is placed；
At least one test point is set on wind electricity blade 1；
In the test point installs fixture 3 of wind electricity blade 1, fixture 3 is connected by connecting rope 4 with puller system 5, puller system 5
Positioned at the top of wind electricity blade 1；
Foil gauge 6 is sticked on the surface of the test point of wind electricity blade 1；
Puller system 5 pulls fixture 3, and fixture 3 drives wind electricity blade 1 to be bent；
Foil gauge 6 measures the strain value on the surface of wind electricity blade 1；
The change in location of test point is measured, and calculates the load angle of test point, amount of deflection；
Puller system 5 measures tensile load, and the torque of test point is calculated by tensile load；
Strain value that foil gauge 6 is measured, calculate gained test point load angle, amount of deflection and torque, with standard value
It compares, judges whether wind electricity blade 1 meets specification.
It, can quickly and correct measurement goes out strain value, load angle, amount of deflection and torque, with standard by the above method
After value compares, you can judge whether wind electricity blade 1 meets specification.
Wherein, in order to ensure the stability of static loading experiment and reliability, when puller system 5 loads, fixture 3 is pulled, is preloaded
40% value of thrust；It is to be determined it is ready after, puller system 5 is further continued for loading, until tensile load be 100% value of thrust.
Wherein, the strain value that foil gauge 6 measures sends signal acquiring system 7 to, and signal acquiring system 7 adopts foil gauge 6
The strain value of collection is converted to strain data and strain data is transferred to processor 8, and processor 8 stores and handles strain data.
Strain value is after the processing of processor 8, tester can directly read that treated strain data, and compared with standard value.
Wherein, as shown in figure 3, the calculating of load angle α, carries out by the following method.
The coordinate points after the completion of test point loads are set as A ', the coordinate points of puller system 5 are B；Setup algorithm datum mark is
C, straight line BC are parallel with the axis of wind electricity blade 1；
As shown in Figure 3,
Therefore, load angle
By the above method, can rapidly and accurately measure load angle α, then by load angle α and with standard value phase
Compare, you can judge whether wind electricity blade 1 meets specification.
Wherein, as shown in figure 3, the calculating of amount of deflection D, carries out by the following method.
The coordinate points before test point does not load are set as A, the coordinate points after the completion of test point loading are A ', puller system 5
Coordinate points are B；
Setup algorithm datum mark is C, and straight line BC is parallel with the axis of wind electricity blade 1；
From the figure 3, it may be seen that
H1=AB × cosB, H2=A ' B × cosB,
Therefore, amount of deflection D=H1-H2=AB × cosB-A ' B × cosB.
By the above method, amount of deflection D can be rapidly and accurately measured, then compare amount of deflection D and with standard value, you can
Judge whether wind electricity blade 1 meets specification.
Wherein, as shown in figure 3, the calculating of the torque M of test point, carries out by the following method.
The coordinate points after the completion of test point loads are set as A ', the coordinate of A ' is (x1,z1), the coordinate points of puller system 5 are B,
The coordinate of B is (x2,z2)；
From the figure 3, it may be seen that x1=x2-H2,
In conclusion the functional equation of straight line can be obtained by where A ' B：
(x-x2)/(x2-x1)=(z-z1)/(z2-z1)
The coordinate of known O points is (0,0), and the length of arm of force L is equal to point O to the distance of straight line A ' B.
With reference to the range formula of zero to straight line：
To sum up, it can obtain what load F (size of F is measured by puller system 5) applied wind electricity blade 1 at 100%
The formula of torque M：
By the above method, torque M can be rapidly and accurately measured, then compare torque M and with standard value, you can
Judge whether wind electricity blade 1 meets specification.
Wherein, in the above-mentioned methods, the measurement of the change in location of test point is measured by tape measure 9 or laser testing instrument.
Wherein, the quantity of test point is multiple, and multiple test points are arranged along the axis of wind electricity blade.Each test point corresponds to
One puller system 5 and a fixture 3 by above-mentioned three sides method wind electricity blade static test method, can measure answering for each test point
Variate, load angle, amount of deflection and torque.
Wherein, puller system 5 is equipped with pulling force sensor, and the tensile load of puller system 5 is measured by pulling force sensor.Pass through drawing
Force snesor can timely and accurately test out the tensile load of puller system 5.
By above-mentioned three sides method wind electricity blade static test method, the actual numerical value of test load angle α can be obtained.Separately
On the one hand, we can acquire load F to the vertical range L of origin by geometric knowledge.In this way, amount of deflection and torque pass through " three
The measurement of side method " can be obtained with calculating.Again because of strain value and moment of flexure proportional, in static loading experiment,
It can verify that tested wind electricity blade either with or without the requirement for reaching GL specifications by recording amount of deflection and strain value.
The present invention is not limited to the above-described embodiments, no matter making any variation in its shape or structure, all falls within this hair
Within bright protection domain.Protection scope of the present invention is defined by the appended claims, and those skilled in the art exists
Under the premise of without departing substantially from the principle and substance of the present invention, many changes and modifications may be made, but these
Change and modification each fall within protection scope of the present invention.
Claims (9)
1. a kind of three side method wind electricity blade static test methods, which is characterized in that include the following steps：
The root of wind electricity blade is fixed on test fixed station, the axis horizontal of the wind electricity blade is placed；
At least one test point is set on the wind electricity blade；
In the test point installs fixture of the wind electricity blade, the fixture is connected by connecting rope with puller system, the pulling force
Machine is located at the top of the wind electricity blade；
Foil gauge is sticked on the surface of the test point of the wind electricity blade；
The puller system pulls the fixture, and the fixture drives the wind electricity blade bending；
The foil gauge measures the strain value on the surface of the wind electricity blade；
The change in location of the test point is measured, and calculates the load angle of the test point, amount of deflection；
The puller system measures tensile load, and the torque of the test point is calculated by the tensile load；
Strain value that the foil gauge is measured, calculate gained the test point load angle, amount of deflection and torque, with standard
Value compares, and judges whether the wind electricity blade meets specification.
2. method wind electricity blade static test method in three sides as described in claim 1, which is characterized in that the puller system pulls institute
Fixture is stated, the fixture drives the wind electricity blade bending；Including：
The puller system pulls the fixture, preloads 40% value of thrust；
Determine it is ready after, the puller system continues to load, until the tensile load be 100% value of thrust.
3. method wind electricity blade static test method in three sides as described in claim 1, which is characterized in that the foil gauge measured
Strain value sends signal acquiring system to, and the strain value that the foil gauge acquires is converted to dependent variable by the signal acquiring system
Processor is transferred to according to and by the strain data, the processor stores and handles the strain data.
4. method wind electricity blade static test method in three sides as described in claim 1, which is characterized in that measure the test point
Change in location, and calculate the load angle of the test point, amount of deflection；The calculating of the load angle, including：
The coordinate points after the completion of the test point loads are set as A ', the coordinate points of the puller system are B；
Setup algorithm datum mark is C, and straight line BC is parallel with the axis of the wind electricity blade；
The load angle
5. method wind electricity blade static test method in three sides as described in claim 1, which is characterized in that measure the test point
Change in location, and calculate the load angle of the test point, amount of deflection；The calculating of the amount of deflection, including：
The coordinate points before the test point does not load are set as A, the coordinate points after the completion of test point loading are A ', the drawing
The coordinate points of power machine are B；
Setup algorithm datum mark is C, and straight line BC is parallel with the axis of the wind electricity blade；
It calculates
Calculate amount of deflection D=AB × cosB-A ' B × cosB.
6. method wind electricity blade static test method in three sides as described in claim 1, which is characterized in that the puller system measures drawing
Power loads, and the torque of the test point is calculated by the tensile load；Including：
The coordinate points after the completion of the test point loads are set as A ', the coordinate of A ' is (x1,z1), the coordinate points of the puller system
For B, the coordinate of B is (x2,z2)；
The puller system measures tensile load F；
Calculate torque
7. method wind electricity blade static test method in three sides as described in claim 1, which is characterized in that the position of the test point
The measurement of variation is measured by tape measure or laser testing instrument.
8. method wind electricity blade static test method in three sides as described in claim 1, which is characterized in that the quantity of the test point
To be multiple, multiple test points are arranged along the axis of the wind electricity blade.
9. method wind electricity blade static test method in three sides as described in claim 1, which is characterized in that the puller system is equipped with
Pulling force sensor, the tensile load of the puller system are measured by the pulling force sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711160881.3A CN108152130A (en) | 2017-11-20 | 2017-11-20 | Three side method wind electricity blade static test methods |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711160881.3A CN108152130A (en) | 2017-11-20 | 2017-11-20 | Three side method wind electricity blade static test methods |
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| CN108152130A true CN108152130A (en) | 2018-06-12 |
Family
ID=62468962
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374403A (en) * | 2018-12-25 | 2019-02-22 | 江苏金风科技有限公司 | The test platform of blade and the test method of blade |
| CN110231162A (en) * | 2019-07-22 | 2019-09-13 | 上海电气风电集团有限公司 | The method for testing fatigue of wind electricity blade |
| CN111649884A (en) * | 2020-06-12 | 2020-09-11 | 国网山东省电力公司电力科学研究院 | Device for testing mechanical property of angle steel reinforcing member of power transmission tower |
| CN111829878A (en) * | 2020-06-04 | 2020-10-27 | 国网山东省电力公司电力科学研究院 | Mechanical property testing device and method for angle steel reinforcing member of power transmission tower |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109374403A (en) * | 2018-12-25 | 2019-02-22 | 江苏金风科技有限公司 | The test platform of blade and the test method of blade |
| CN109374403B (en) * | 2018-12-25 | 2021-01-22 | 江苏金风科技有限公司 | Blade testing platform and blade testing method |
| CN110231162A (en) * | 2019-07-22 | 2019-09-13 | 上海电气风电集团有限公司 | The method for testing fatigue of wind electricity blade |
| CN111829878A (en) * | 2020-06-04 | 2020-10-27 | 国网山东省电力公司电力科学研究院 | Mechanical property testing device and method for angle steel reinforcing member of power transmission tower |
| CN111649884A (en) * | 2020-06-12 | 2020-09-11 | 国网山东省电力公司电力科学研究院 | Device for testing mechanical property of angle steel reinforcing member of power transmission tower |
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Application publication date: 20180612 |