CN109238670A - Fan blade fatigue test test device - Google Patents
Fan blade fatigue test test device Download PDFInfo
- Publication number
- CN109238670A CN109238670A CN201810796386.XA CN201810796386A CN109238670A CN 109238670 A CN109238670 A CN 109238670A CN 201810796386 A CN201810796386 A CN 201810796386A CN 109238670 A CN109238670 A CN 109238670A
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- CN
- China
- Prior art keywords
- fan blade
- pedestal
- mass block
- decelerating motor
- test device
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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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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of fan blade fatigue test test devices, including fixed pedestal, blade holder, loading device, range sensor, controller, the blade holder clamps fan blade to be measured, the blade holder is fixed on the fixed pedestal, the loading device includes decelerating motor and gyrating mass block, the decelerating motor drives the gyrating mass block to do sinusoidal rotation in perpendicular, and centrifugal force caused by the gyrating mass block acts on the fan blade to be measured；The range sensor is used to detect the displacement at tested fan blade stress, and detected shift value is sent to controller, controller is according to the shift value, the rotational frequency of the decelerating motor is controlled, so that the rotational frequency of the decelerating motor is identical as the vibration frequency of the tested fan blade；The detected moment is greater than preset range, then judges the tested fan blade fatigue failure.
Description
Technical field
The invention belongs to the technical fields such as the fatigue test of fan blade, and in particular to a kind of fan blade fatigue test survey
Trial assembly is set.
Background technique
In each component part of wind power generating set, blade is the important component for converting wind energy into mechanical energy, structure,
Strength and stability plays an important role to the reliability of Wind turbine.In April, 2012 Department of Science and Technology of China statement: it is required that pushing
10 MW class offshore wind farm unit complete machines and the research and development of parts design key technology, to realize marine ultra-large type Wind turbines
Model machine operation.Domestic test is not able to satisfy the blade testing of 10 MW class at present, is based primarily upon following reason: 1, testing
Platform power of test is insufficient, is not enough to bear the test moment of flexure of 10 megawatts of grade blades；2, the drawbacks of static loading mode: existing crane
There is the load distribution inaccuracy of load in load vertically upward, loading gravitational load that is unstable and laterally loading influences；3, tired
The drawbacks of labor loading method: that there are Vibrating Loads is limited for motor eccentric wheel loading method, and 10 megawatts of grade blades are not enough to draw
It plays resonance and reaches test load；4, a testboard can only carry out a test, cannot by static(al) and testing fatigue simultaneously into
Row, fatigue test need 2 to 4 months time, and time cost is too high.
Therefore, it is necessary on the basis of existing technology, research and develop that a kind of control is accurate, and reliable test result is steady
It is fixed, the high-efficient test device low with testing cost of test job.
Summary of the invention
The present invention is directed at least solve the technical problems existing in the prior art, a kind of fan blade fatigue test is proposed
Test device can improve the above-mentioned problems of the prior art.
A kind of fan blade fatigue test test device, including fixed pedestal, leaf are provided to achieve the purpose of the present invention
Plate clamp, loading device, range sensor, controller, the blade holder clamp fan blade to be measured, and the blade holder is solid
It is scheduled on the fixed pedestal, the loading device includes decelerating motor and gyrating mass block, described in the decelerating motor drives
Gyrating mass block does sinusoidal rotation in perpendicular, and centrifugal force caused by the gyrating mass block acts on the wind to be measured
On machine blade；The range sensor is used to detect displacement at tested fan blade stress, and by detected shift value
It is sent to controller, controller controls the rotational frequency of the decelerating motor according to the shift value, so that the deceleration is electric
The rotational frequency of machine is identical as the vibration frequency of the tested fan blade；The range sensor detects the tested blower leaf
The moment of flexure of the root of piece, the detected moment are greater than preset range, then judge that the tested fan blade fatigue is lost
Effect.
Preferably, the range sensor is laser distance sensor.
Preferably, the outer circumference direction of the gyrating mass block is equipped with the safety guard of annular.
Preferably, nylon safety net is cased on the safety guard.
Preferably, the gyrating mass block is equipped with multiple counterweight mounting structures.
Preferably, the fixed pedestal is that tubular loads pedestal, and the blade holder is fixed on the tubular load pedestal
Mounting cylinder in.
Preferably, the blade holder is fixed on the tubular by high-strength bolt and loads in the mounting cylinder of pedestal.
Preferably, the fixed pedestal includes pedestal, flange, and one end of the flange is bolted on pedestal,
The blade holder is bolted in the other side of the flange.
The invention has the following advantages:
Fan blade fatigue test test device provided by the invention, loading force frequency close to fan blade vibration
When frequency, the amplitude of blade can be sharply increased, and stable amplitude is larger, and the moment of flexure error for being tested root of fan blade is small, detection
Whether the moment of root of fan blade is greater than preset value at this time, if more than preset value, it can be determined that the root of tested fan blade
Fatigue failure occurs for portion, and this fatigue behaviour detection accuracy is high, and the efficiency of detection can be improved significantly.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the fan blade fatigue test test device that embodiment of the present invention provides.
Description of symbols:
Fixed pedestal 1, tested fan blade 2, loading device 3, controller 4, range sensor 5.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Referring to FIG. 1, Fig. 1 is the structural representation for the fan blade fatigue test test device that embodiment of the present invention provides
Figure.
As shown in Figure 1, fan blade fatigue test test device provided by the present invention, including fixed pedestal 1, blade folder
Tool, loading device 3, range sensor 5, controller 4, the blade holder clamp fan blade to be measured, and the blade holder is solid
It is scheduled on the fixed pedestal 1, the loading device 3 includes decelerating motor and gyrating mass block, and the decelerating motor drives institute
It states gyrating mass block and does sinusoidal rotation in perpendicular, centrifugal force caused by the gyrating mass block acts on described to be measured
On fan blade；The range sensor 5 is used to detect displacement at tested 2 stress of fan blade, and by detected position
Shifting value is sent to controller 4, and controller 4 controls the rotational frequency of the decelerating motor according to the shift value, so that described
The rotational frequency of decelerating motor is identical as the vibration frequency of the tested fan blade 2；The range sensor detects 5 quilts
The moment of flexure of the root of fan blade 2 is surveyed, the detected moment is greater than preset range, then judges the tested blower leaf
2 fatigue failure of piece.
Fan blade fatigue test test device provided by the invention, loading force frequency close to fan blade vibration
When frequency, the amplitude of blade can be sharply increased, and stable amplitude is larger, and the moment of flexure error for being tested 2 root of fan blade is small, detection
Whether the moment of root of fan blade is greater than preset value at this time, if more than preset value, it can be determined that the root of tested fan blade 2
Fatigue failure occurs for portion, and this fatigue behaviour detection accuracy is high, and the efficiency of detection can be improved significantly.
In preferred scheme, the range sensor 5 is laser distance sensor.Laser distance sensor can quickly be grown
The scanning of distance is tested fan blade 2, can rapidly and accurately obtain the local displacement changing value of large-sized fan blade.
In preferential scheme, the outer circumference direction of the gyrating mass block is equipped with the safety guard of annular.Safety guard can be with
Danger caused by preventing gyrating mass block from flying out.
In more optimal solution, it is cased with nylon safety net on the safety guard, can further improve the security performance of safety guard.
In preferred scheme, the gyrating mass block is equipped with multiple counterweight mounting structures, can be by adjusting counterweight
Size is required to change the weight of gyrating mass block with the experiment load for meeting different.
In preferred scheme, the fixed pedestal 1 is that tubular loads pedestal, and the blade holder is fixed on the tubular and adds
In the mounting cylinder for carrying pedestal.
In further embodiment, the blade holder is fixed on the installation that the tubular loads pedestal by high-strength bolt
In cylinder.
In addition to above scheme, fixed pedestal 1 can also use following scheme, and the fixed pedestal 1 includes pedestal, flange,
One end of the flange is bolted on pedestal, and the blade folder is bolted in the other side of the flange
Tool.
Structure, feature and effect of the invention, the above institute are described in detail based on the embodiments shown in the drawings
Only presently preferred embodiments of the present invention is stated, but the present invention does not limit the scope of implementation as shown in the drawings, it is all according to structure of the invention
Think made change or equivalent example modified to equivalent change, when not going beyond the spirit of the description and the drawings,
It should all be within the scope of the present invention.
Claims (8)
1. a kind of fan blade fatigue test test device, which is characterized in that including fixed pedestal, blade holder, loading device,
Range sensor, controller, the blade holder clamp fan blade to be measured, and the blade holder is fixed on the fixed pedestal
On, the loading device includes decelerating motor and gyrating mass block, and the decelerating motor drives the gyrating mass block vertical
Sinusoidal rotation is done in plane, centrifugal force caused by the gyrating mass block acts on the fan blade to be measured；It is described away from
It is used to detect the displacement at tested fan blade stress from sensor, and detected shift value is sent to controller, control
Device processed controls the rotational frequency of the decelerating motor according to the shift value so that the rotational frequency of the decelerating motor with
The vibration frequency of the tested fan blade is identical；The range sensor detects the curved of the root of the tested fan blade
Square, the detected moment are greater than preset range, then judge the tested fan blade fatigue failure.
2. fan blade fatigue test test device according to claim 1, which is characterized in that the range sensor is
Laser distance sensor.
3. fan blade fatigue test test device according to claim 1, which is characterized in that the gyrating mass block
Outer circumference direction is equipped with the safety guard of annular.
4. fan blade fatigue test test device according to claim 3, which is characterized in that be cased on the safety guard
Nylon safety net.
5. fan blade fatigue test test device according to claim 1, which is characterized in that on the gyrating mass block
Equipped with multiple counterweight mounting structures.
6. fan blade fatigue test test device according to claim 1, which is characterized in that the fixed pedestal is cylinder
Shape loads pedestal, and the blade holder is fixed in the mounting cylinder of the tubular load pedestal.
7. fan blade fatigue test test device according to claim 6, which is characterized in that the blade holder passes through
High-strength bolt is fixed in the mounting cylinder of the tubular load pedestal.
8. fan blade fatigue test test device according to claim 1, which is characterized in that the fixed pedestal includes
One end of pedestal, flange, the flange is bolted on pedestal, and institute is bolted in the other side of the flange
State blade holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796386.XA CN109238670A (en) | 2018-07-19 | 2018-07-19 | Fan blade fatigue test test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796386.XA CN109238670A (en) | 2018-07-19 | 2018-07-19 | Fan blade fatigue test test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109238670A true CN109238670A (en) | 2019-01-18 |
Family
ID=65072227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810796386.XA Pending CN109238670A (en) | 2018-07-19 | 2018-07-19 | Fan blade fatigue test test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109238670A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900461A (en) * | 2019-02-27 | 2019-06-18 | 东软医疗系统股份有限公司 | A kind of CT swivel plate method for testing security and device |
| CN111795899A (en) * | 2020-07-30 | 2020-10-20 | 上海电气风电集团股份有限公司 | Torsion loading equipment and blade torsion testing method |
| CN112285555A (en) * | 2020-09-25 | 2021-01-29 | 北京二郎神科技有限公司 | Fatigue test device of unmanned aerial vehicle power system |
| CN113109006A (en) * | 2020-01-13 | 2021-07-13 | 西门子歌美飒可再生能源公司 | Testing device and method for fatigue testing of wind turbine blades |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202661260U (en) * | 2012-06-15 | 2013-01-09 | 上海同韵环保能源科技有限公司 | Fatigue loading test device for wind turbine blade of wind generating set |
| CN203365124U (en) * | 2013-07-18 | 2013-12-25 | 连云港中复连众复合材料集团有限公司 | Full-dimension test system and platform for megawatt-level blower fan blade |
| CN203785883U (en) * | 2014-03-28 | 2014-08-20 | 北京金风科创风电设备有限公司 | Fatigue test tool of wind turbine blade |
-
2018
- 2018-07-19 CN CN201810796386.XA patent/CN109238670A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202661260U (en) * | 2012-06-15 | 2013-01-09 | 上海同韵环保能源科技有限公司 | Fatigue loading test device for wind turbine blade of wind generating set |
| CN203365124U (en) * | 2013-07-18 | 2013-12-25 | 连云港中复连众复合材料集团有限公司 | Full-dimension test system and platform for megawatt-level blower fan blade |
| CN203785883U (en) * | 2014-03-28 | 2014-08-20 | 北京金风科创风电设备有限公司 | Fatigue test tool of wind turbine blade |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900461A (en) * | 2019-02-27 | 2019-06-18 | 东软医疗系统股份有限公司 | A kind of CT swivel plate method for testing security and device |
| CN113109006A (en) * | 2020-01-13 | 2021-07-13 | 西门子歌美飒可再生能源公司 | Testing device and method for fatigue testing of wind turbine blades |
| CN111795899A (en) * | 2020-07-30 | 2020-10-20 | 上海电气风电集团股份有限公司 | Torsion loading equipment and blade torsion testing method |
| CN111795899B (en) * | 2020-07-30 | 2023-08-04 | 上海电气风电集团股份有限公司 | Torsion loading equipment and blade torsion testing method |
| CN112285555A (en) * | 2020-09-25 | 2021-01-29 | 北京二郎神科技有限公司 | Fatigue test device of unmanned aerial vehicle power system |
| CN112285555B (en) * | 2020-09-25 | 2024-05-17 | 北京二郎神科技有限公司 | Fatigue testing device of unmanned aerial vehicle power system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190118 |
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| RJ01 | Rejection of invention patent application after publication |