CN105181318B - A kind of blade of wind-driven generator Torsion Coupling vector measurement device - Google Patents
A kind of blade of wind-driven generator Torsion Coupling vector measurement device Download PDFInfo
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- CN105181318B CN105181318B CN201510608815.2A CN201510608815A CN105181318B CN 105181318 B CN105181318 B CN 105181318B CN 201510608815 A CN201510608815 A CN 201510608815A CN 105181318 B CN105181318 B CN 105181318B
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Abstract
A kind of blade of wind-driven generator Torsion Coupling vector measurement device, including clamping device, load applying mechanism and measurement executing agency, the clamping device is matched with the root cylinder of measured blade, the load applying mechanism is matched with the blade tip of measured blade, the measurement executing agency includes displacement sensor, force snesor, static strain measuring system and computer, institute's displacement sensors are arranged at leading edge and the rear in measured blade different location section, the force snesor is mounted on load applying mechanism, the static strain measuring system input terminal is connect with displacement sensor and force snesor, its output end is connect with computer.The present invention realizes the accurate measuring and calculating to blade Torsion Coupling characteristic before wind-driven generator installation, ensure that the reliability service of wind-driven generator.
Description
Technical field
The present invention relates to a kind of measuring device, especially a kind of blade of wind-driven generator Torsion Coupling vector measurement device,
Belong to technical field of power generation.
Background technology
Blade of wind-driven generator is the critical component of wind-driven generator, often composite material is selected to make, due to composite material
In contain the fiber cloth with different laying angles and overlay thickness so that composite material has anisotropic characteristics, because
This blade can all twist deformation and flexural deformation simultaneously under pure bending or pure torsional load, i.e. composite material blade has
Torsion Coupling deformation characteristic.The Torsion Coupling characteristic of blade determines deformational behavior of the blade under load effect, utilizes wind-force
The characteristic of generator blade material anisotropy, blade can change shape automatically with the variation of wind speed, generate rational distortion and become
Shape improves Wind energy extraction ability to widen wind energy conversion system normal operation wind speed range, reduces the shock loading that blade is born, and
Improve its security performance in high wind speed.
The Torsion Coupling characteristic of blade of wind-driven generator belongs to the inherent characteristic of blade entirety, can pass through blade Torsion Coupling
VectorIt indicates, Torsion Coupling vectorThat is the vector of each aerofoil section Torsion Coupling vector α compositions of blade（）, section Torsion Coupling vector α is the ratio for generating bending angle β and windup-degree θ（）.In order to ensure the reliability of wind-driven generator work, the Torsion Coupling to blade is needed before wind-driven generator installation
VectorCalculated.
Invention content
The purpose of the present invention is to provide a kind of blade of wind-driven generator Torsion Coupling vector measurement devices, to realize in wind
Accurate measuring and calculating before power generator installation to blade Torsion Coupling characteristic, ensures the reliability service of wind-driven generator.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of blade of wind-driven generator Torsion Coupling vector measurement device, including clamping device, load applying mechanism and survey
Measure executing agency；The structure of the clamping device is matched with the root cylinder of measured blade, the load applying mechanism
Structure is matched with the blade tip of measured blade；The measurement executing agency includes displacement sensor, force snesor, static strain survey
Amount system and computer, institute's displacement sensors are arranged at leading edge and the rear in measured blade different location section, described
Force snesor is mounted on load applying mechanism, the static strain measuring system input terminal and displacement sensor and force snesor
Connection, output end are connect with computer.
Above-mentioned blade of wind-driven generator Torsion Coupling vector measurement device, the load applying mechanism include hydraulic loaded group
Part, auxiliary clamp, first support and second support；The auxiliary clamp is sleeved on the blade tip position of measured blade, by upper and lower
Two grip block compositions, formation and the matched holding chamber of measured blade tip at the middle part of upper and lower two grip blocks, upper and lower
Two grip block left and right ends setting load working faces.
Above-mentioned blade of wind-driven generator Torsion Coupling vector measurement device, the hydraulic loaded component is by the second hydraulic power unit
And hydraulic cylinder composition, second hydraulic power unit are connect with hydraulic cylinder, and hydraulic control system, the liquid are equipped in hydraulic power unit
Cylinder pressure includes the first hydraulic cylinder being fixed in first support and fixed second hydraulic cylinder on the secondary support bracket, first liquid
The piston rod of cylinder pressure stretches down, and the piston rod of the second hydraulic cylinder stretches upwards, the piston rods of two hydraulic cylinders respectively with
The load working face of auxiliary clamp left and right ends corresponds to.
Above-mentioned blade of wind-driven generator Torsion Coupling vector measurement device is arranged on the clamping cavity wall of the auxiliary clamp
Rubber pad.
Above-mentioned blade of wind-driven generator Torsion Coupling vector measurement device, the first support and second support are removable
Dynamic structure.
Above-mentioned blade of wind-driven generator Torsion Coupling vector measurement device, the clamping device include grip slipper, hydraulic clip
Tool and the first hydraulic power unit, the grip slipper are fixed on level ground, and blade mounting hole is arranged on grip slipper, are pacified in blade
The periphery in dress hole is evenly arranged three sets of hydraulically operated fixtures.
Above-mentioned blade of wind-driven generator Torsion Coupling vector measurement device, the hydraulically operated fixture include clamping oil cylinder and clamping
Block, the clamping oil cylinder are connect with the first hydraulic power unit, and the piston rod and grip block fixing assembling of oil cylinder, the grip block is clamped
Equipped with the matched arc clamping face of root of blade.
The present invention is fixed the root cylinder of measured blade by clamping device, then will be assisted in load applying mechanism
Fixture is sleeved on the blade tip position of measured blade, then by the first hydraulic cylinder that is fixed in first support and is fixed on second
Second hydraulic cylinder on holder respectively imposes the load working face of auxiliary clamp left and right ends that size is identical, direction is opposite pushes away
Power makes to be measured blade generation torsional bending deformation under torsional moment effect；It is arranged in measured blade different location at this time
Collected information is passed to computer by the displacement sensor of section leading edge and rear by static strain measuring system, simultaneously
Collected power load information is passed to computer by the force snesor on load applying mechanism, then by being set in computer
Information analysis, calculating of the program set to different location section leading edge and the acquisition of trailing edge displacement sensor, obtain in different torques
The shift value of blade different location section leading edge and rear, then calculates wind-driven generator according to the shift value under load condition
The Torsion Coupling vector α values of blade, and then obtain Torsion Coupling vector.Since the grip block in clamping device of the present invention is by pressing from both sides
Hydraulic oil cylinder driving is held, and first support and second support are removable frame in load applying mechanism, therefore the present invention has
Good universal performance is suitable for the measurement to the blade of wind-driven generator of different model.It can be seen that the present invention realizes
Accurate measuring and calculating before wind-driven generator installation to blade Torsion Coupling characteristic, ensure that the reliability service of wind-driven generator.
Description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the general structure schematic diagram of the present invention；
Fig. 2 is the clamping device front view of the present invention；
Fig. 3 is the clamping device side view of the present invention；
Fig. 4 is the load applying mechanism schematic diagram of the present invention；
Fig. 5 is auxiliary fixture structure schematic diagram in load applying mechanism of the present invention；
Fig. 6 is the measurement executing agency schematic diagram of the present invention；
Fig. 7 is to be measured displacement sensor schematic view of the mounting position at a certain sectional position of blade；
Fig. 8 is in a certain sectional position change schematic diagram of the front and back measured blade of load load；
Fig. 9 is the schematic diagram that Torsion Coupling vector α values are calculated according to the shift value of blade different cross section leading edge and rear；
Figure 10 is that different cross section flexural deformation w is opened up with blade to coordinate z change curves.
Each list of reference numerals is in figure：1, clamping device, 1-1, grip slipper, 1-1-1, blade mounting hole, 1-2, clamping oil cylinder,
1-3, grip block, 1-4, the first hydraulic power unit, 2, load applying mechanism, 2-1, first support, 2-2, first hydraulic cylinder, 2-3,
Two hydraulic cylinders, 2-4, auxiliary clamp, 2-4-1, grip block, 2-4-2, load working face, 2-4-3, holding chamber, 2-4-4, rubber
Pad, 2-5, second support, 2-6, the second hydraulic power unit, 3, measure executing agency, 3-1, displacement sensor, 3-2, static strain survey
Amount system, 3-3, computer, 3-4, force snesor, 4, be measured blade, 4-1, leading edge, 4-2, rear.
Specific implementation mode
Referring to Fig. 1, Fig. 6, Fig. 7, the present invention includes clamping device 1, load applying mechanism 2 and measures executing agency 3, described
The structure of clamping device 1 is matched with the root cylinder of measured blade 4, the structure of the load applying mechanism 2 be measured
The blade tip of blade 4 matches, and the measurement executing agency 3 includes displacement sensor 3-1, force snesor 3-4, static strain measurement system
Unite 3-2 and computer 3-3, and institute displacement sensors 3-1 is arranged in the leading edge 4-1 in 4 different location section of measured blade with after
At edge 4-2, the force snesor 3-4 be mounted on load applying mechanism 2 on, the static strain measuring system 3-2 input terminals with
Displacement sensor 3-1 and force snesor 3-4 connections, output end are connect with computer 3-3.
Referring to Fig. 1, Fig. 4, Fig. 5, load applying mechanism 2 of the invention includes hydraulic loaded component, auxiliary clamp 2-4, the
One holder 2-1 and second support 2-5；The auxiliary clamp 2-4 is sleeved on the blade tip position of measured blade 4, by upper and lower two
Grip block 2-4-1 compositions, form and the matched holding chamber 2- of measured blade tip at the middle part of upper and lower two grip block 2-4-1
Load working face 2-4-2, the holding chamber 2-4-3 of the auxiliary clamp 2-4 is arranged in upper and lower two grip block left and right ends in 4-3
Rubber pad 2-4-4 is set on inner wall；The hydraulic loaded component is made of the second hydraulic power unit 2-6 and hydraulic cylinder, and described second
Hydraulic power unit 2-6 is connect with hydraulic cylinder, and hydraulic control system is arranged in the second hydraulic power unit 2-6；The hydraulic cylinder includes
The first hydraulic cylinder 2-2 that is fixed on the first support 2-1 and second hydraulic cylinder 2-3 being fixed on second support 2-5, described the
The piston rod of one hydraulic cylinder 2-2 stretches down, and the piston rod of the second hydraulic cylinder 2-3 stretches upwards, the work of two hydraulic cylinders
Stopper rod is corresponding with the load working face 2-4-2 of the left and right ends auxiliary clamp 2-4 respectively；The first support 2-1 and second support
2-5 is removable frame.
Referring to Fig. 1, Fig. 2, Fig. 3, clamping device 1 of the invention includes grip slipper 1-1, hydraulically operated fixture and the first hydraulic power unit
1-4, the grip slipper 1-1 are fixed on level ground, and blade mounting hole 1-1-1 is arranged on grip slipper 1-1, are installed in blade
The periphery of hole 1-1-1 is evenly arranged three sets of hydraulically operated fixtures；The hydraulically operated fixture includes clamping oil cylinder 1-2 and grip block 1-3, described
Clamping oil cylinder 1-2 is connect with the first hydraulic power unit 1-4, the piston rod and grip block 1-3 fixing assemblings of clamping oil cylinder 1-2, described
Grip block 1-3 is equipped with and the matched arc clamping face of root of blade.
Referring to Fig. 1, Fig. 7, wind machine's laminae made from composite material can not only occur bending and deformation, simultaneously under the action of load
Also occur that torsional deflection.In order to calculate the Torsion Coupling deformation characteristic of composite material blade structure generation, need to apply blade
Add pure bending load or pure torsional load.Due to the anisotropy of blade material and the scrambling in section so that blade is cut
The flexural center in face be difficult find, therefore on pneumatic equipment bladess to be measured apply a vertical direction power when, it cannot be guaranteed that should
Power is by chance by flexural center, i.e., it cannot be guaranteed that applying pure bending load to blade, so, present invention employs pure torsion load to add
Load mode applies a pair of equivalent reversed parallel force to blade tip position to be measured.
The Torsion Coupling characteristic of blade of wind-driven generator can pass through vectorDescription, formula
In,(i=1,2,3 ... n) be i-th of blade section Torsion Coupling vector, i.e., blade when bearing pure torsional load in this section
The bending angle that face generatesAnd windup-degreeθRatio（）.Therefore, in the Torsion Coupling vector Δ progress to blade
When measuring and calculating, it is necessary first to the bending angle in each section of bladeAnd windup-degreeθValue is calculated, and blade bending angleAnd windup-degreeθBear after load that displacement is closely related at section leading edge 4-1 and rear 4-2 with blade, so can be by right
Shift value measures to calculate the Torsion Coupling vector α of blade profile at blade profile leading edge 4-1 and rear 4-2i。
Referring to Fig. 1~Fig. 7, the present invention is a kind of blade of wind-driven generator Torsion Coupling vector measurement device, worked
Cheng Wei：The root cylinder of measured blade 4 is fixed, then auxiliary clamp 2-4 in load applying mechanism 2 is sleeved on measured
The blade tip position of blade 4；Adjust displacement sensor 3-1 so that be measured deformation position of the blade 4 under dead weight as sensor
The initial position of measurement；By loading suitable torsional load, make to be measured the generation low-angle torsional deflection of blade 4（Such as torsion
Angle is less than 2 °）, then the displacement sensor by being arranged at measured blade 4 different location section leading edge 4-1 and rear 4-2
Change in displacement information at leading edge 4-1 and rear 4-2 is passed to computer 3-3 by 3-1 by static strain measuring system 3-2,
The displacement of 4 leading edge 4-1 of measured blade is calculated and be shown by computer 3-3u 1With the displacement of rear 4-2u 2。
Referring to Fig. 8, Fig. 9, Figure 10, according tou 1Withu 2Numerical value can calculate separately out bending angleAnd windup-degreeθValue,
To further calculate out Torsion Coupling vectorαValue.Its theoretical foundation is：AC, BD are respectively before loading, load rear blade section
The string in face, chord length L；Due to the windup-degree very little of blade, straight-line displacement is approximately equal to camber line displacement, i.e. AB
To be measured the displacement of 4 leading edge 4-1 of bladeu 1；CD is the displacement for being measured 4 rear 4-2 of bladeu 2, BD straight line parallels are moved
The positions AE are moved, then the windup-degree of section torsional deflection：
；
Section flexure deformation is indicated with the corresponding deformation FH (FH=FI-HI) in 1/4 chord length place, is denoted as w：
w=FI-HI=
Or
Curve matching w=w (z) is made into the flexural deformation of different cross section, obtains the flexural deformation w of different cross section shown in Figure 10
The curve changed to coordinate z is opened up with blade.By w derivations, section flexure angle is obtained, i.e.,；
Then it can pass through formulaCalculate section Torsion Coupling vectorαValue finally obtains description blade bending
The vectorial Δ of coupled characteristic（）.
Claims (2)
1. a kind of blade of wind-driven generator Torsion Coupling vector measurement device, characterized in that it includes clamping device (1), load
Applying mechanism (2) and measurement executing agency (3)；The root cylinder of the structure and measured blade (4) of the clamping device (1)
Matching, the structure of the load applying mechanism (2) are matched with the blade tip of measured blade (4)；Measurement executing agency (3) packet
Displacement sensor (3-1), force snesor (3-4), static strain measuring system (3-2) and computer (3-3) are included, the displacement passes
Sensor (3-1) is arranged at leading edge (4-1) and the rear (4-2) in measured blade (4) different location section；The force snesor
(3-4) is mounted on load applying mechanism (2), static strain measuring system (3-2) input terminal and displacement sensor (3-1)
And force snesor (3-4) connection, output end are connect with computer (3-3)；
The load applying mechanism (2) includes hydraulic loaded component, auxiliary clamp (2-4), first support (2-1) and second support
(2-5)；The auxiliary clamp (2-4) is sleeved on the blade tip position of measured blade (4), by upper and lower two grip blocks (2-4-1)
Composition, formation and the matched holding chamber of measured blade tip (2-4-3) at the middle part of upper and lower two grip blocks (2-4-1),
Upper and lower two grip block left and right ends setting load working face (2-4-2)；
The hydraulic loaded component is made of the second hydraulic power unit (2-6) and hydraulic cylinder, second hydraulic power unit (2-6) and liquid
Cylinder pressure connects, and hydraulic control system is equipped in hydraulic power unit, and the hydraulic cylinder includes the be fixed in first support (2-1)
One hydraulic cylinder (2-2) and the second hydraulic cylinder (2-3) being fixed in second support (2-5), the work of the first hydraulic cylinder (2-2)
Stopper rod stretches down, and the piston rod of the second hydraulic cylinder (2-3) stretches upwards, the piston rods of two hydraulic cylinders respectively with auxiliary
The load working face (2-4-2) of the left and right ends fixture (2-4) is corresponding；
The first support (2-1) and second support (2-5) are removable frame；
The clamping device (1) includes grip slipper (1-1), hydraulically operated fixture and the first hydraulic power unit (1-4), the grip slipper (1-
1) it is fixed on level ground, blade mounting hole (1-1-1) is set on grip slipper (1-1), in blade mounting hole (1-1-1)
Periphery is evenly arranged three sets of hydraulically operated fixtures；
The hydraulically operated fixture includes that oil cylinder (1-2) and grip block (1-3) is clamped, the clamping oil cylinder (1-2) and the first hydraulic pump
Stand (1-4) connection, piston rod and grip block (1-3) fixing assembling of clamping oil cylinder (1-2), the grip block (1-3) be equipped with
The matched arc clamping face of root of blade.
2. blade of wind-driven generator Torsion Coupling vector measurement device according to claim 1, characterized in that the auxiliary
Rubber pad (2-4-4) is set on holding chamber (2-4-3) inner wall of fixture (2-4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510608815.2A CN105181318B (en) | 2015-09-23 | 2015-09-23 | A kind of blade of wind-driven generator Torsion Coupling vector measurement device |
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| CN201510608815.2A CN105181318B (en) | 2015-09-23 | 2015-09-23 | A kind of blade of wind-driven generator Torsion Coupling vector measurement device |
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| CN105181318A CN105181318A (en) | 2015-12-23 |
| CN105181318B true CN105181318B (en) | 2018-08-10 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606356A (en) * | 2016-03-16 | 2016-05-25 | 中国直升机设计研究所 | Tail rotor blade supporting device |
| CN106055764B (en) * | 2016-05-26 | 2019-04-16 | 华北电力大学（保定） | Pneumatic equipment bladess based on three-dimensional shell finite element-beam model are displaced calculation method |
| CN106370125A (en) * | 2016-10-27 | 2017-02-01 | 沈阳航空航天大学 | Blade continuous deformation measuring device based on residual stress release |
| CN110057518B (en) * | 2019-05-21 | 2021-03-19 | 山东理工大学 | Loading method and device for wind power blade trailing edge component |
| CN113446979B (en) * | 2021-07-07 | 2022-05-17 | 山东理工大学 | Accurate measuring device for space angle of steel wire rope and wind power blade in full-size static force loading test of wind power blade |
| CN113390625B (en) * | 2021-08-17 | 2021-12-07 | 中国航天空气动力技术研究院 | Front edge bending test tool and method |
| CN115127943A (en) * | 2022-07-07 | 2022-09-30 | 西安热工研究院有限公司 | Multifunctional testing platform and testing method for wind turbine blade |
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| DE102012205153B4 (en) * | 2012-03-29 | 2013-10-17 | Repower Systems Se | Test device and vibration mass arrangement for a rotor blade of a wind turbine |
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