CN106609726A - Insert for blade, blade and wind generating set - Google Patents
Insert for blade, blade and wind generating set Download PDFInfo
- Publication number
- CN106609726A CN106609726A CN201611186130.4A CN201611186130A CN106609726A CN 106609726 A CN106609726 A CN 106609726A CN 201611186130 A CN201611186130 A CN 201611186130A CN 106609726 A CN106609726 A CN 106609726A
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- China
- Prior art keywords
- blade
- abaculus
- embedded
- connecting portion
- root
- Prior art date
- 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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- 238000005260 corrosion Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
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- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011151 fibre-reinforced plastic Substances 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
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- 239000002025 wood fiber Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/06—Rotors
- F03D1/065—Rotors characterised by their construction elements
- F03D1/0675—Rotors characterised by their construction elements of the blades
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention provides an insert block for a blade, the blade and a wind generating set. The insert for a blade comprises: a connecting portion having a connecting hole; embedding portion, embedding portion are connected with connecting portion, and embedding portion is protruding including installation base member and embedding, and the embedding is protruding to be fixed on the installation base member, and along the radial extension of blade root, or extend along the first direction, and the first direction has first contained angle with the radial of blade root. The insert block for the blade can avoid the increase of extra thickness of the blade root and reduce the weight of the blade.
Description
Technical field
The present invention relates to field of wind power equipment, more particularly to a kind of blade abaculus, blade and wind power generating set.
Background technology
The history of wind power generating set is made a general survey of, it is a kind of firm to develop that many effort have been carried out, compact and cheap
Blade abaculus.It is difficult to effective and reliable way answering fiberglass/resin, the wood fiber/resin or carbon fiber/resin
Close structure to be fixed on metal wheel hub.
The blade abaculus structure and installation method that at present industry is used belongs to one of two types.
The first kind, the surface for putting type joint (so-called T connector) and Second Type is (so-called pre-buried to surface type joint
Sleeve pipe).
For the T connector of standard, the minimum diameter of nut is determined by following requirements：
1st, reach is engaged；
2nd, nut strength；
3rd, the crush resistance in the hole in blade construction；
4th, after blade drilling remaining total cross sectional area intensity, including stress concentration factor.
Generally, the first two requires to meet by middle-sized nut, however, the 3rd standard needs major diameter
Nut.The problem is processed in the patent of the A1 of WO 2,012 168990.Finally, in order to meet the 4th requirement, blade root
Thickness increases.Such as the U of patent CN 202851266, the scheme of US 2014/0169980A1.This causes the weight of blade to increase, from
And reduce the efficiency of whole wind power generating set.Size and the increase of load with blade, needs to increase blade root thickness, or
Person carries out nut checkerboard type layout.
For the joint with pre- tubing, the size of sleeve pipe is mainly determined by following factors：
1st, reach is engaged；
2nd, casing strength；
The intensity of bonding (binding agent) the 3rd, between sleeve pipe and other blade constructions；
4th, sleeve pipe pre-installs the gross area intensity of rear blade remaining cross-section, including the factor of stress concentration.
Generally, the first two requires to meet by middle-sized nut.However, the 3rd requires that needs are long
Sleeve pipe.Meanwhile, the edge effect (stress concentration) produced at mating surface, it is difficult to ensure that from fiber-reinforced polymer structure
To the Load Balanced distribution of the metal structure of sleeve pipe, need to use the sleeve pipe of complicated shape last for this, in order to meet the 4th
Require, blade root thickness needs to increase, and causes leaf weight to increase, and reduces the efficiency of whole blower fan.And, with blade dimensions
With the increase of load, need to lift blade root thickness, or using the sleeve arrangement mode of load is compared, increased many costs,
Leaf weight is also increased much.
The further development of the joint of pre- tubing as disclosed in WO 2006/070171A1, wherein introducing complicated shape
The pre- tubing of (similar ice cream shape).The effect of the total shape and additional interlocking structure that are further described is to make each
Securing member obtains more many areas and the more large area used in load transmittance process, therefore, still tied using blade root and sleeve pipe
Shearing at conjunction is used as basic load transfer mode.The major defect of the invention is, because the preferable shape of sleeve pipe is not flat
Smooth, therefore, blade root needs to be kept as T connector the same thickness or bigger thickness, causes relatively high blade weight
Amount.Hierarchy therein also needs to increase extra weight.Finally, this joint style is not allowed using with high flexibility value
Length, the bolt with high fatigue life.
Above-mentioned problem promotes inventor to constantly search for more preferable scheme.However, all schemes of the prior art are all
There is same difficulty, such as fiber is damaged or bond length is excessive.
The main purpose of patent WO2011/035548 is to be attached to the wedge structure on blade to reduce blade root by introducing
Thickness.This structure can be regarded as a kind of face to the combination in face, have the shortcomings that the combination of this type, such as by
In the low weight efficiency that the low shear strength of binding agent is caused, the stress concentration at binding agent edge, metal is caused with plastic bonding
Problem etc..
The main purpose of patent CN 103511191A is the thickness for reducing blade root by removing decannulation within a fitting.This
It is T connector that plant structure can be regarded as, and it has whole shortcomings that T connector has.Such as, the fiber of fibre reinforced materials is complete
Whole property is destroyed, high stress concentrations of bolt introduce region etc..In addition, this kind of structure can not change in use bolt,
So that blade root fastenings structure height is ineffectiveness.
The content of the invention
Embodiments of the invention provide a kind of blade abaculus, blade and wind power generating set, pre- to solve existing blade root
Burying bolt sleeve needs the extra problem for increasing blade root thickness.
To reach above-mentioned purpose, embodiments of the invention provide a kind of blade abaculus, and it includes：Connecting portion, connecting portion
With connecting hole；Embedded division, embedded division is connected with connecting portion, and embedded division includes installing matrix and embedded projection, is embedded in raised solid
It is scheduled in installing matrix, and radially extending along blade root, or extends in a first direction, first direction and the radial direction of blade root has the
One angle.
Further, along the direction away from connecting portion, the thickness of the installing matrix of embedded division is gradually reduced.
Further, it is provided with embedded projection on relative at least one side of installing matrix.
Further, along the direction away from installing matrix, it is embedded in raised cross-sectional area and is gradually reduced.
Further, multiple embedded projections, Duo Geqian are provided with a side of installing matrix or on two sides
Enter projection interval setting in installing matrix.
Further, embedded division is arranged on the first end of connecting portion；Or connecting portion is cylinder, embedded division is two and one by one
It is arranged in correspondence with the opposite sides radially in connecting portion；Or connecting portion is cylinder, embedded division is arranged on the first of connecting portion
End and opposite sides radially.
Further, connecting hole is screwed hole.
According to a further aspect in the invention, there is provided a kind of blade, it includes blade root and the blade abaculus with blade root fastenings,
Blade abaculus is above-mentioned blade abaculus, and the embedded division of at least blade abaculus is arranged in blade root.
Further, blade abaculus is for multiple, and being provided at circumferentially spaced along blade root.
Further, blade also includes two or more blade sections, length of at least a portion blade sections along blade
Degree direction is sequentially connected；And/or at least a portion blade sections are sequentially connected along the width of blade.
According to a further aspect in the invention, there is provided a kind of blade, the blade includes two or more blade sections,
The part of one or two blade sections docking in adjacent blade sections is provided with blade abaculus, and the blade abaculus is upper
The blade abaculus stated.
Further, the blade abaculus is multiple, and along the partially circumferentially interval setting of blade sections docking.
According to a further aspect in the invention, there is provided a kind of wind power generating set, it includes blade, and blade is above-mentioned leaf
Piece.
The blade of embodiments of the invention abaculus includes connecting portion and embedded division, and embedded division is used to be embedded in wind-driven generator
In the blade root of group, coordinate transmission load, connecting portion to be used to connect double threaded screw with blade root, blade is connected with wheel hub.By
There are multiple embedded projections in embedded division, load transmission is carried out by embedded raised and installing matrix, during load transmission, due to embedding
Enter the raised radial direction along blade root to extend, therefore load by embedded raised compression and stretching to transmit so that carry energy
Power is more preferable.Because load transfer is smooth gradually transfer, therefore break inactivation situation will not occur, it is not necessary to increase root of blade
Thickness, therefore leaf weight is reduced, so as to improve vane efficiency, and reduce the blade and wheel hub of wind power generating set
Between connection weight.
Description of the drawings
Fig. 1 is the dimensional structure diagram at the first visual angle of the first blade abaculus of embodiments of the invention；
Fig. 2 is the dimensional structure diagram at the second visual angle of the first blade abaculus of embodiments of the invention；
Fig. 3 is the dimensional structure diagram at the 3rd visual angle of the first blade abaculus of embodiments of the invention；
Fig. 4 is the dimensional structure diagram of second blade abaculus of embodiments of the invention；
Fig. 5 is the dimensional structure diagram of the third blade abaculus of embodiments of the invention；
The cross section structure diagram that Fig. 6 coordinates for the blade root of embodiments of the invention with blade abaculus；
Fig. 7 is the dimensional structure diagram at the blade root of the blade of embodiments of the invention；
Fig. 8 is the structural representation at the blade root of the blade of embodiments of the invention.
Description of reference numerals：
10th, connecting portion；11st, connecting hole；20th, embedded division；21st, installing matrix；22nd, it is embedded in projection；30th, blade root；40th, transition
Structure；50th, double threaded screw.
Specific embodiment
The blade of the embodiment of the present invention is retouched in detail with abaculus, blade and wind power generating set below in conjunction with the accompanying drawings
State.
As shown in Figure 1 to Figure 3, embodiments in accordance with the present invention, blade abaculus includes connecting portion 10 and embedded division 20, even
Socket part 10 has connecting hole 11；Embedded division 20 is connected with connecting portion 10, and embedded division 20 includes installing matrix 21 and embedded raised 22,
Embedded raised 22 are fixed in installing matrix 21, and radially extending along blade root 30, or extend in a first direction, first direction with
The radial direction of blade root 30 has the first angle.The embedded division 20 of the blade abaculus is used to coordinate with blade root 30, is embedded in blade root 30
Fiber-reinforced layer in.Connecting portion 10 is in the outside of blade root 30, for installing stud.During load transmission, due to embedded raised 22
Extend or extend in a first direction along the radial direction of blade root 30, therefore load the compression by being embedded in raised 22 and stretch to pass
Pass so that bearing capacity is more preferable.Because load transfer is smooth gradually transfer, therefore break inactivation situation will not occur, no
Root of blade thickness must be increased, therefore reduce leaf weight, so as to improve vane efficiency, and reduce wind-driven generator
Connection weight between the blade and wheel hub of group.
The value of the first angle between the radial direction of first direction and blade root 30 can be as needed for arbitrary value, preferably
Ground, the value of the first angle is not equal to 90 ° more than 0 ° and less than 180 °.
The material of connecting portion 10 and embedded division 20 can determine as needed, preferably metal or steel construction.Embedded division 20
Can be determined according to real needs with the position relationship of connecting portion 10.As shown in Figure 1 to Figure 3, embedded division 20 is arranged on connecting portion
10 first end, connecting hole 11 is caved inward by second end relative with first end of connecting portion 10 and is formed.
As shown in figure 4, connecting portion 10 be cylinder (cross-sectional area of the cylinder can be circular, oval polygon or its
His arbitrary shape, certainly, the shape of each cross section of the length direction of the cylinder can be consistent, or different, i.e., should
Cylinder is variable cross-section cylinder), embedded division 20 is two, and is arranged in correspondence with the opposite sides radially in connecting portion 10, even
Connect hole 11 by connecting portion 10 first end or the second end cave inward and formed.
As shown in figure 5, connecting portion 10 is cylinder, embedded division 20 is arranged on the first end of connecting portion 10 and radially relative
Both sides, connecting hole 11 is caved inward by second end relative with first end of connecting portion 10 and is formed.In other words, embedded division 20
Opening is provided with installing matrix 21, connecting portion 10 is arranged in opening.
These three blades are described in detail with abaculus below：
As shown in Figures 1 to 3, connecting portion 10 is cylinder, and it is axially extending along blade root 30.Certainly, in other embodiment
In, the shape of cross section of connecting portion 10 can also be other shapes, such as oval, polygon or irregularly shaped.Connecting portion
10 minimum length is according to the given nominal diameter of the bolt for being connected with wheel hub of blade, the minimum engagement length of given material
Degree etc. is selecting, therefore, to assure that bearing capacity.
Connecting hole 11 is axially extending along connecting portion 10.In the present embodiment, connecting hole 11 is blind hole, and it is threaded,
For engaging with the double threaded screw 50 being connected.End face of the opening of connecting hole 11 at the second end of connecting portion 10.
The installing matrix 21 of embedded division 20 is connected by transition portion with connecting portion 10.Installing matrix 21 is tabular.Cross
Cross part to be gradually reduced to the thickness of embedded division 20 by connecting portion 10.The shape and length of transition portion is selected according to following manner,
Stress concentration is avoided, and needs to make reversed fatigue pressure be maintained at low-level.
It should be noted that transition portion can be integrally formed with installing matrix 21, i.e., transition portion is really pacified
A part for dress matrix 21.Installing matrix 21 can be connected by modes such as welding or integrated injection moldings with connecting portion 10.
Preferably, in the present embodiment, along the direction away from connecting portion 10, the thickness of the installing matrix 21 of embedded division 20 by
It is decrescence little.Because blade abaculus is when being embedded in blade root 30, further away from the direction of connecting portion 10 depth of blade root 30 is embedded in
Deeper, the bearing strength of the installing matrix 21 of needs can be reduced suitably, can so reduce weight.
Preferably, embedded raised 22 are provided with the two opposite side surfaces of installing matrix 21.So that embedded division 20 and leaf
The connection of root 30 is relatively reliable, and load transfer capacity is more preferable.Certainly, being embedded in raised 22 can be provided only on the one of installing matrix 21
On individual side.
Multiple embedded raised 22, multiple embedded raised 22 are provided with a side of installing matrix 21 in installing matrix
Interval setting on 21.
In the present embodiment, being embedded in raised 22 can arrange in a conventional manner in installing matrix 21.As along installation base
The length direction of body 21 interval setting multigroup embedded raised 22 successively, per group embedded raised 22 include it is multiple along installing matrix 21
Width successively spaced embedded raised 22.Certainly, in other embodiments, being embedded in raised 22 can be with unconventional
Mode is arranged.
In the present embodiment, the cross section for being embedded in raised 22 is circle.Circle is more conducive to convenient for production.Embedded raised 22
Diameter selection in the following manner, the injury that the hole for installing embedded raised 22 formed on blade root 30 is caused is less.
Embedded raised 22 size determines that in the following manner embedded raised 22 diameter is comparable to blade root 30 and meets material strand diameters.When
So manufacturing cost can also be taken into consideration.Preferably, raised 22 diameter and the equal diameters of the fibre bundle of blade root 30 are embedded in.
Multiple embedded raised 22 sizes can be consistent.The quantity of embedded raised 22 in installing matrix 21 is undergoing double end
Screw rod 50 transmission load and do not fail in the life cycle of blade and be advisable.Certainly, the size for being embedded in raised 22 can also root
Different sizes are designed as according to use demand.
Embedded raised 22 can individually produce after be assembled into again in installing matrix 21, it is also possible to the one of installing matrix 21 into
Type.The length and shape of installing matrix 21 is determined with following standard so as to can bear the load and nothing of embedded raised 22 transmission
Stress concentration.The thickness and width of installing matrix 21 is selected according to following standard, it is ensured that the using in blade of installing matrix 21
Can bear in journey from the load of the transmission of double threaded screw 50 of blade and not fail and be advisable.
Preferably, along the direction away from installing matrix 21, embedded raised 22 cross-sectional area is gradually reduced.Certainly, at it
In his embodiment, embedded raised 22 diameter can not also change.
As shown in figure 4, the connecting portion 10 of blade abaculus is cylinder, embedded division 20 is fixedly installed on the footpath of connecting portion 10
Opposite sides upwards.In addition to the relative position of embedded division 20 and connecting portion 10 is different, this kind of blade abaculus with it is above-mentioned
Blade abaculus can be consistent.The thickness of the installing matrix 21 of the embedded division 20 of this kind of blade abaculus can be consistent, it is also possible to
Gradual change.
As shown in figure 5, the connecting portion 10 of blade abaculus is cylinder, and the installing matrix 21 of embedded division 20 is rectangle
Plate, and side has opening, connecting portion 10 is arranged in opening, and is seamlessly transitted by transition structure 40 with installing matrix 21,
To prevent stress concentration.
As shown in Figure 6 to 8, according to a further aspect in the invention, there is provided a kind of blade, it includes blade root 30 and and blade root
The blade abaculus of 30 connections, blade abaculus is above-mentioned blade abaculus, and the embedded division 20 of at least blade abaculus is arranged
In blade root 30.The blade reconnects double threaded screw 50 with the embedded blade root 30 of abaculus, can solve T-shaped in prior art connecing
The thickness of blade root 30 that head and service sleeve are caused increases, and reduces the problem of vane efficiency.
Blade abaculus is for multiple, and being provided at circumferentially spaced along blade root 30, to connect double threaded screw 50.Diametrically,
The distance of adjacent blades abaculus can be with equal or different.
As shown in fig. 6, embedded raised 22 are connected to the corresponding part of blade root 30, being embedded in raised 22 may the protrusion table of blade root 30
Face.Embedded division 20 can be installed in order to coordinate, hole or chamber are provided with blade root 30.
The shape of blade abaculus is not particularly critical, as long as blade abaculus does not have wedge angle, can reduce stress concentration
.Especially needed idea is, it is to avoid the generation fatigue crack of the screwed hole of connecting portion 10.Blade abaculus it is convex from blade root
The part for going out, such as connecting portion 10, should prevent corrosion by suitable mode.
After blade abaculus is properly handled, it can be loaded in blade root 30.With a jig plate (not shown come)
Obtain the tram of the blade abaculus in the annular of blade root 30.Blade abaculus is mainly by the structure division of blade root 30
The compression stress and tension force for being internally embedded raised 22 realizes load transmission.
The composite layer of blade root 30 is above and below embedded division 20.The cavity of blade root 30 is used to place embedded division
20.The actual cross sections of the cavity of blade root 30 can be any shape, but it is preferably crushed with high aspect ratio, so as to
Keep the structural intergrity of blade root composite material.
The quantity of blade abaculus depends on the design of the pitch variable bearings of wind power generating set.Typically for 1.5MW wind-force
The blade of generating set, with no less than 50 blade abaculus.Bigger blade has more blade abaculus.Typical leaf
The width of piece abaculus is 100mm.And the spacing of blade abaculus is 112.9mm on center circle diameter.For a 2MW
For blade, center circle diameter 2300mm, 64 bolts, using the bolt of M36.Certainly, for bigger blade, use
More bolts and elevator bolt diameter also can be.The concentric of two or more bolts and blade abaculus is provided in blade
Ring, one of them can lift compression/extended region between tip and blade root in another, so.
Preferentially, for the hole in the fiber-reinforced layer casting die for installing embedded raised 22 blade root, can be in lamination solidification
Period preform, or formed under the auxiliary of any other manufacturing process.
Alternatively, connecting portion is covered by corrosion resistant coating.
The gross weight and the cost of raw material of assembling blade can be significantly decreased using the blade abaculus, and including many
The manufacture of the wind generator set blade root of individual this blade abaculus becomes easy.
According to a further aspect in the invention, there is provided a kind of blade, including two or more blade sections, adjacent leaf
The part of one or two blade sections docking in fragment is provided with blade abaculus (not shown), and blade abaculus is upper
The blade abaculus stated.Docking between blade sections can be realized using this kind of blade abaculus, without increasing blade sections pair
The thickness of position is connect, leaf weight is reduced, realizes that blade section connects.
Alternatively, blade abaculus is multiple, and along the partially circumferentially interval setting of blade sections docking.
According to an embodiment of the invention on the other hand, there is provided a kind of wind power generating set, it includes blade, and blade is upper
The blade stated.
Compared with classical root of blade attachment arrangement, embedded raised the 22 of minor diameter does not apply or makes to the root of blade
Into less damage, there is no stress concentration in the composite, therefore the thickness and length of blade root 30 can reduce, so as to subtract
The gross weight of vanelets.
Compared with T-shaped pre-embedded bolt blade root, the total sectional area of hole drill rear blade is bigger, therefore the reliability that increased.
Compared with pre-buried sleeve pipe, the load of service sleeve is delivered to set by the shearing force in binding agent from root of blade
Pipe, the blade abaculus load of the present embodiment is mainly transmitted by way of embedded raised 22 compression or stretching, increased material
Material service efficiency.
Because fiber extends between blade root 30 and embedded raised the 22 of embedded division 20, therefore in blade root 30 and embedded division 20
Between define new firm attachment structure.Therefore, principle of the invention is based not only on and combines and the transmission of local compressive load,
Also based on the additional latch-up structure between embedded raised 22 and the fiber of blade root 30.
It is gradually to shift due to loading transfer, therefore the situation of break inactivation will not occurs, it is not necessary to increases root of blade thick
Degree, therefore reduce the connection weight between wind generator set blade and wheel hub.
Because embedded projection 22 can be arranged with precalculated position, therefore the leaf after the hole for accommodating embedded projection 22 is got out
The total cross-sectional area of piece root keeps relatively large, and more bolts subsequently can be installed at same radius and root of blade.When
When loading the array transmission by being embedded in raised 22, therefore current design is the design of multi load path, correspondingly increases blade
The fault-tolerance of root component.
The blade abaculus is connected with blade and is similar to three-dimensional type joint, and it is maximally effective joint categories, is not existed T-shaped
The problem of joint and service sleeve class joint.Using concrete embedded raised 22 blade abaculus, be embedded in raised 22 diameter with
The equal diameters of the fibre bundle of fibre reinforced materials, can be fused in the fibre reinforced materials of blade root 30 naturally.Meanwhile, with
Other designs are contrary, and the length of the inside of connecting portion 10 engagement screw thread requires to choose according to minimum length of action, to allow to reduce
The weight of connecting portion 10.
The blade abaculus of the present invention, blade and wind power generating set have the effect that：
Blade abaculus can provide relatively low weight for blade root；Root of blade component strength and tired longevity can be increased
Life, therefore increase the overall security of wind power generating set；Relatively low cost can be provided for root component, lift blade abaculus
It is anti-ineffectiveness.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, all should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by the scope of the claims.
Claims (13)
1. a kind of blade abaculus, it is characterised in that include：
Connecting portion (10), the connecting portion (10) is with connecting hole (11)；
Embedded division (20), the embedded division (20) is connected with the connecting portion (10), and the embedded division (20) is including installing matrix
(21) and embedded projection (22), the embedded projection (22) is fixed in the installing matrix (21), and along the footpath of blade root (30)
To extension, or extend in a first direction, the first direction has the first angle with the radial direction of the blade root (30).
2. blade abaculus according to claim 1, it is characterised in that along the direction away from the connecting portion (10), institute
The thickness for stating the installing matrix (21) of embedded division (20) is gradually reduced.
3. blade abaculus according to claim 1, it is characterised in that the two opposite side surfaces of the installing matrix (21)
On be provided with it is described it is embedded projection (22).
4. blade abaculus according to any one of claim 1 to 3, it is characterised in that along away from the installing matrix
(21) direction, the cross-sectional area of the embedded projection (22) is gradually reduced.
5. blade abaculus according to any one of claim 1 to 3, it is characterised in that in the installing matrix (21)
A side on or two sides on be provided with it is multiple it is described it is embedded projection (22), it is multiple it is described it is embedded projection (22) described
Interval setting in installing matrix (21).
6. blade abaculus according to claim 1, it is characterised in that the embedded division (20) is arranged on the connecting portion
(10) first end；Or
The connecting portion (10) is cylinder, and the embedded division (20) is two, and is arranged on the connecting portion correspondingly
(10) opposite sides radially；Or
The connecting portion (10) is cylinder, and the embedded division (20) is arranged on the first end of the connecting portion (10) and radially
Opposite sides.
7. blade abaculus according to claim 1, it is characterised in that the connecting hole (11) is screwed hole.
8. a kind of blade, it is characterised in that including blade root (30) and the blade abaculus being connected with the blade root (30), the leaf
Piece abaculus is the blade abaculus any one of claim 1 to 7, the embedded division (20) of at least described blade abaculus
It is arranged in the blade root (30).
9. blade according to claim 8, it is characterised in that the blade abaculus is multiple, and along the blade root
(30) be provided at circumferentially spaced.
10. blade according to claim 8, it is characterised in that the blade also includes two or more blades
Section, two or more described blade sections are sequentially connected along the length direction of the blade；And/or, two or more
The blade sections are sequentially connected along the width of the blade.
11. a kind of blades, it is characterised in that the blade includes two or more blade sections, in adjacent blade sections
The part of one or two blade sections docking be provided with blade abaculus, the blade abaculus is to appoint in claim 1 to 7
Blade abaculus described in one.
12. blades according to claim 11, it is characterised in that the blade abaculus is multiple, and along the blade
The partially circumferentially interval setting of section docking.
13. a kind of wind power generating sets, it is characterised in that including blade, the blade is any one of claim 8 to 12 institute
The blade stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611186130.4A CN106609726B (en) | 2016-12-20 | 2016-12-20 | Insert for blade, blade and wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611186130.4A CN106609726B (en) | 2016-12-20 | 2016-12-20 | Insert for blade, blade and wind generating set |
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| Publication Number | Publication Date |
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| CN106609726A true CN106609726A (en) | 2017-05-03 |
| CN106609726B CN106609726B (en) | 2019-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611186130.4A Active CN106609726B (en) | 2016-12-20 | 2016-12-20 | Insert for blade, blade and wind generating set |
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| Country | Link |
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| CN (1) | CN106609726B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019110069A1 (en) * | 2017-12-08 | 2019-06-13 | Vestas Wind Systems A/S | A replacement insert for repair of a joint connecting a wind turbine rotor blade to a rotor hub |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019110069A1 (en) * | 2017-12-08 | 2019-06-13 | Vestas Wind Systems A/S | A replacement insert for repair of a joint connecting a wind turbine rotor blade to a rotor hub |
| US11732686B2 (en) | 2017-12-08 | 2023-08-22 | Vestas Wind Systems A/S | Replacement insert for repair of a joint connecting a wind turbine rotor blade to a rotor hub |
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| Publication number | Publication date |
|---|---|
| CN106609726B (en) | 2019-10-11 |
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