CN107366673A - Bolt sleeve, blade root built-in fitting and the wind electricity blade production method of wind electricity blade - Google Patents
Bolt sleeve, blade root built-in fitting and the wind electricity blade production method of wind electricity blade Download PDFInfo
- Publication number
- CN107366673A CN107366673A CN201610311656.4A CN201610311656A CN107366673A CN 107366673 A CN107366673 A CN 107366673A CN 201610311656 A CN201610311656 A CN 201610311656A CN 107366673 A CN107366673 A CN 107366673A
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- Prior art keywords
- bolt sleeve
- blade
- wind electricity
- endoporus
- electricity blade
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
- F16B37/04—Devices for fastening nuts to surfaces, e.g. sheets, plates
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
Abstract
The present invention discloses a kind of bolt sleeve of wind electricity blade, blade root built-in fitting and wind electricity blade production method.The bolt sleeve of wind electricity blade, is embedded in wind electricity blade blade root in advance, and the bolt sleeve includes first end and the second end；The bolt sleeve external diameter is gradually reduced from second end to the first end；The bolt sleeve has an endoporus, and the endoporus penetrates the bolt sleeve first end, and the endoporus extends along the bolt sleeve axis, and the endoporus includes leading portion, stage casing and inner segment, and the stage casing of the endoporus is set to internal thread.Glued connection is substituted by mechanically connecting, improves the stability of general bolt sleeve boundary strength, while reduces blade root overall weight, advantageously reduces blade cost.
Description
Technical field
This invention relates generally to a kind of wind electricity blade production technology, pass through in particular to one kind
Mechanically connect and substitute glued connection, improve the spiral shell of the wind electricity blade of general bolt sleeve boundary strength stability
Bolt set, blade root built-in fitting and wind electricity blade production method.
Background technology
, typically can be by the direct integral built-in of multiple bolt sleeves in wind electricity blade leaf in the production of wind electricity blade
Root, blade root may be selected synchronously integrally formed with blade body.And due to the blade root intensity requirement of composite
Height, toughness are poor.So in the prior art, to influence blade root monnolithic case after avoiding bolt sleeve from being pulled,
Bolt sleeve profile is typically chosen in isometrical design.And the adhesion between the bolt sleeve of isometrical design and blade root
It is poor.
At present, the bolt sleeve of wind electricity blade is mainly connected with gluing and transmits stress, and transmits the gluing of stress
Interface is easily changed by operating environment and process conditions.General bolt sleeve outer surface will
Harshness is sought, it is necessary to specially treated.
Above- mentioned information is only used for strengthening the reason of the background to the present invention disclosed in the background section
Solution, therefore it can include not forming the information to prior art known to persons of ordinary skill in the art.
The content of the invention
A series of concept of reduced forms is introduced in Summary, this will be in embodiment
It is further described in part.Present invention part is not meant to attempt to limit required guarantor
The key feature and essential features of the technical scheme of shield, do not mean that more attempt to determine it is claimed
Technical scheme protection domain.
A primary object of the present invention is at least one defect for overcoming above-mentioned prior art, there is provided one
The bolt sleeve of kind wind electricity blade, glued connection is substituted by mechanically connecting, improves general bolt sleeve interface
The stability of intensity, while blade root overall weight is reduced, advantageously reduce blade cost.
Another main purpose of the present invention is at least one defect for overcoming above-mentioned prior art, there is provided
A kind of blade root built-in fitting and wind electricity blade production method, can quickly be produced with mass, and can be more preferable
Ground ensures that qualification rate and structural strength, the blade root built-in fitting of pre-molding can be filled before production and application
The detection divided, to avoid scrapping because the entirety that blade root is bad and fits into large-scale blade.
For achieving the above object, the present invention adopts the following technical scheme that：The embodiment of the present invention provides one
The bolt sleeve of kind wind electricity blade, is embedded in wind electricity blade blade root, the bolt sleeve includes first end and second in advance
End；The bolt sleeve external diameter is gradually reduced from second end to the first end；The bolt sleeve has
One endoporus, the endoporus penetrate the bolt sleeve first end, and the endoporus prolongs along the bolt sleeve axis
Stretch, the endoporus includes leading portion, stage casing and inner segment, and the stage casing of the endoporus is set to internal thread.
According to an embodiment of the present invention, the first end extends to the wind electricity blade blade root direction,
Second end extends to the wind power blade tip lightening direction；The first end exposes to the blade root end face.
According to an embodiment of the present invention, the bolt sleeve outer surface is circular conical surface, the bolt sleeve circle
Conical surface slope is between 0.010 to 0.018.
According to an embodiment of the present invention, the bolt sleeve is provided with only in the position close to second end
Rotation structure, the spline structure are section non-circular structure.
According to an embodiment of the present invention, the bolt sleeve outer surface is circular conical surface, the bolt sleeve circle
Conical surface slope is between 0.010 to 0.018；The upper compartment of terrain in bolt sleeve outer surface axial direction offers multiple
Bulge loop or multiple grooves.
According to an embodiment of the present invention, the endoporus is open bore or envelope at the end of bolt sleeve second
Closed pore；The inner of the endoporus inner segment is alignd or close to second end, and the inner segment of the endoporus is by outer
End inboard end aperture gradually expands；The inner segment of the endoporus is by the slope of outer end inboard end 0.29 to 0.82
Between.
According to an embodiment of the present invention, the inner segment of the endoporus is by the slope of outer end inboard end
0.652。
According to another aspect of the present invention, there is provided a kind of blade root built-in fitting of wind electricity blade, the built-in fitting are pre-
It is embedded in wind electricity blade blade root, joined integrally in the built-in fitting there are multiple bolt sleeves, the built-in fitting is to set
Pre-molding after fat mixes with fiber；Each bolt sleeve extends parallel to the wind electricity blade axis, respectively
The bolt sleeve includes first end and the second end, and the first end extends to the wind electricity blade blade root direction,
The first end exposes to the blade root end face；Second end extends to the wind power blade tip lightening direction；
Each bolt sleeve external diameter is gradually reduced from second end to the first end；The bolt sleeve has one
Individual endoporus, the endoporus penetrate the bolt sleeve first end, and the endoporus extends along the bolt sleeve axis,
The endoporus includes leading portion, stage casing and inner segment, and the stage casing of the endoporus is set to internal thread.
According to an embodiment of the present invention, the bolt sleeve outer surface is circular conical surface, the bolt sleeve circle
Conical surface slope is between 0.010 to 0.018；The upper compartment of terrain in bolt sleeve outer surface axial direction offers multiple
Bulge loop or multiple grooves.
According to another aspect of the present invention, there is provided a kind of wind electricity blade production method, comprise the following steps：
Prepare the bolt sleeve of multiple foregoing wind electricity blades；
Prepare the blade root built-in fitting of wind electricity blade as previously described；
In wind electricity blade production, the wind electricity blade is incorporated into the blade root built-in fitting of the wind electricity blade
Blade root.
As shown from the above technical solution, the bolt sleeve of the wind electricity blade of the embodiment of the present invention, blade root built-in fitting
And the advantages of wind electricity blade production method and good effect are：
Applicable anchor force can be provided, moreover it is possible to burst after preventing the second end tension of bolt sleeve in blade root
It side, can not only mitigate the overall weight of bolt sleeve, the second end can also be avoided excessively to tie up the inner side of blade root
Thickness space, increase blade root bond strength.
The bolt sleeve of the wind electricity blade of inventive embodiments, based on mechanical connection and member-retaining portion bonding connects
Connection function, the characteristics of being provided simultaneously with mechanical connection and bonding connection so that the cold-resistant thermal shock resistance properties of product
More preferable blade adaptability is wider, can meet large-scale blade complex load requirement well.The present invention is to bolt
Metal surface is covered without processing particular/special requirement, belongs to environmental friendly product.
Brief description of the drawings
Following the following detailed description of the embodiment of the present invention is considered in conjunction with the accompanying drawings, and of the invention is each
Kind target, feature and advantage will become apparent.Accompanying drawing is only the exemplary diagram of the present invention,
It is not necessarily drawn to scale.In the accompanying drawings, same reference represents same or similar all the time
Part.Wherein：
Fig. 1 is the bolt sleeve structure schematic perspective view of the wind electricity blade according to first embodiment.
Fig. 2 is the bolt sleeve structure schematic cross-sectional view of the wind electricity blade according to first embodiment.
Fig. 3 is the bolt sleeve structure schematic perspective view of the wind electricity blade according to second embodiment.
Fig. 4 is the bolt sleeve structure schematic side view of the wind electricity blade according to second embodiment.
Fig. 5 is the bolt sleeve structure schematic cross-sectional view of the wind electricity blade according to second embodiment.
Fig. 6 is the bolt sleeve structure schematic rear view of the wind electricity blade according to second embodiment.
Wherein, description of reference numerals is as follows：
1st, bolt sleeve；11st, first end；12nd, the second end；13rd, endoporus；131st, leading portion；132nd, in
Section；133rd, inner segment；14th, outer surface；15th, spline structure；16th, bulge loop；17th, groove.
Embodiment
Example embodiment is described more fully with referring now to accompanying drawing.However, example embodiment can
Implement in a variety of forms, and be not understood as limited to embodiment set forth herein；Conversely, there is provided this
A little embodiments cause the present invention fully and completely, and the design of example embodiment will be passed on comprehensively
To those skilled in the art.Identical reference represents same or similar structure in figure, thus will
Omit their detailed description.
In the following description, a large amount of concrete details are given to provide to the present invention more thoroughly
Understand.It will be apparent, however, to one skilled in the art that the present invention can be without one
Or these multiple details and be carried out.In other examples, in order to avoid obscuring with the present invention,
It is not described for some technical characteristics well known in the art.
First embodiment
Fig. 1 is the bolt sleeve structure schematic perspective view of the wind electricity blade according to first embodiment.Fig. 2
It is the bolt sleeve structure schematic cross-sectional view of the wind electricity blade according to first embodiment.
As illustrated, the embodiment of the present invention provides a kind of bolt sleeve 1 of wind electricity blade, it can be embedded in advance
The blade root position of wind electricity blade, a shank of bolt can be spirally connected and be fixed on this bolt sleeve 1, recycle spiral shell afterwards
Tightening latch and external connection.The direct fixation that is spirally connected with outside shank of bolt can also be selected.Facilitate the use this
Wind electricity blade is fixedly connected by bolt sleeve 1 with generating set.
In the present exemplary embodiment, bolt sleeve 1 can be that (cylinder more adapts to lightweight to cylindrical strip
The demand of design), it may include the end 12 of first end 11 and second.First end 11 is directed to wind electricity blade leaf
One end of root direction extension, the second end 12 are directed to one end of wind power blade tip lightening direction extension.Can be by
One end 11 exposes to blade root outer face, and first end 11 may be selected to be and blade root end face, first end 11
It is alternatively chosn to protrude from blade root end face certain altitude.The external diameter of bolt sleeve 1 can be from the second end 12 to first end
11 are gradually reduced, with the big outer small bolt sleeve with dovetail effect in formation.For concrete example, such as
Shown in Fig. 1, the outer surface 14 of bolt sleeve 1 can be circular conical surface, and the circular conical surface slop control of bolt sleeve 1 exists
Between 0.010 to 0.018, applicable anchor force can be provided, moreover it is possible to prevent the second end 12 of bolt sleeve 1
Burst after tension on the inside of blade root.Also, the slope of the present embodiment outer surface 14 is by by the second end
12 realize to the thin outer wall of bolt sleeve 1 of 11 gradual car of first end, are not using gradual to the second end 12
Thicken the straightforward procedure of outer wall.That is, the external diameter at the second end 12 is identical with existing bolt sleeve, and
Between external diameter at first end 11 is equivalent to the 85% to 95% of existing bolt sleeve.
In this way, can not only mitigate the overall weight of bolt sleeve 1, the second end 12 can also be avoided excessively to tie up
The inner thickness space of blade root, increase blade root bond strength.
As shown in Fig. 2 in the present exemplary embodiment, bolt sleeve 1 has an endoporus 13, endoporus 13
In-and-out bolt cover 1 first end 11, endoporus 13 along the axis of bolt sleeve 1 extend, endoporus 13 include leading portion 131,
Stage casing 132 and inner segment 133, in the present exemplary embodiment, endoporus 13 is substantially from first end 11 to the
The trisection of two end 12 forms these three segmentations.And in the present embodiment it is set in the stage casing 132 of endoporus 13
Internal threaded regions, it is spirally connected with this internal thread and external bolt.In specific example, reach exists
90mm is between 115mm.In this way, it may be such that the force part of bolt sleeve 1 is located at middle part so that with
Carry out load external pull in the middle part of blade root, avoid with blade root outside and inner side direct load external pull, through reality
The long-term test of room is tested, blade root service life can largely be improved with this.Moreover, internal thread is located at
Stage casing 132, can also be easy to Fast Installation to assemble, bolt after the guiding of the certain distance of leading portion 131,
Can be quickly to silk at the internal thread of stage casing 132, moreover it is possible to avoid because angle is damaged not to caused by the outside of stripped thread and blade root
It is bad.Further, because the slope of the present embodiment outer surface 14 is by from the second end 12 to first end 11
The gradual thin outer wall of bolt sleeve 1 of car realizes that so, at stage casing 132, the outer wall thickness of bolt sleeve 1 is also
Enough intensity can be ensured, light-weight design can be advantageous to this.
Bolt sleeve 1 is provided with spline structure 15 in the position close to the second end 12, and spline structure 15 is section
Non-circular structure.For concrete example, multiple breach can be formed to realize by the cutting at the second end 12,
Preferably, a facet is cut in the corresponding position close to blade root inner surface, and in contrast
The corresponding position close to blade root outer surface of opposite side cut another facet, it is of course also possible to
Selection corresponds to two facets of increase again between the two facets cut out, to form equidistantly distributed.
These planes can be parallel to the axis of bolt sleeve 1.With this, bolt can be prevented after being combined with blade root
It is enclosed in blade root and rotates.And the second end 12 can also be avoided excessively to tie up the inner thickness space of blade root,
Increase blade root bond strength.
According to an embodiment of the present invention, as shown in Fig. 2 endoporus 13 is at the end 12 of bolt sleeve 1 second
Can be open bore or blind hole.The inner of endoporus inner segment 133 is alignd or close to the second end 12, wherein,
The inner segment 133 of endoporus may be selected gradually to be expanded by outer end inboard end aperture.This is mainly by the second end 12
The external diameter for gradually expanding endoporus 13 is realized.The inner segment 133 of endoporus 13 is existed by the slope of outer end inboard end
Between 0.29 to 0.82.Through constantly checking, one there is the embodiment of preferable effect to be, the inner segment of endoporus by
The slope of outer end inboard end is 0.652.Here outer end refers to that the inner refers to towards this one end of blade root direction
Towards this one end of wind power blade tip lightening direction.Inner segment 133 selects gradually to be expanded by outer end inboard end aperture,
The overall weight of bolt sleeve 1 can not only be mitigated；The outer wall of bolt sleeve 1 outside inner segment 133 can also be caused to be more easy to
Deformation, to the end direction at the second end 12, gradually weaken rigidity and strengthen plasticity.So that bolt sleeve 1
After the overload pulling force received, the outer wall of bolt sleeve 1 outside inner segment 133 can be deformed inward, and be unlikely to overall spalling
Blade root profile, strengthen the anti-ability locally overloaded of blade root, avoid because local overload triggers blade root integrally to damage,
Security incident can largely be avoided.
In the above embodiment of the present invention, although bolt sleeve formed it is interior big outer small to be acted on dovetail, by
Gradually expanded by outer end inboard end aperture in the inner segment 133 of endoporus 13, be not only gradually thinned inner segment again
The outer wall of bolt sleeve 1 outside 133, also leaves deformation space between the outer wall of bolt sleeve 1 and bolt, makes
Obtain bolt sleeve 1 in the present embodiment and maximum static load power is increased by interior big outer small profile, but when load
After breaking through maximum static load power, although bolt sleeve 1 may be pulled, due to bolt sleeve 1 it is larger in
End can be deformed inward, so the thing of overall spalling blade root profile will not occur because of interior big outer small profile again
Therefore.
Second embodiment
Fig. 3 is the bolt sleeve structure schematic perspective view of the wind electricity blade according to second embodiment.Fig. 4
It is the bolt sleeve structure schematic side view of the wind electricity blade according to second embodiment.Fig. 5 is according to
The bolt sleeve structure schematic cross-sectional view for the wind electricity blade that two implementations exemplify.
As illustrated, (cylinder is more for second embodiment of the invention bolt sleeve 1 or cylindrical strip
Adapt to the demand of light-weight design), it may include the end 12 of first end 11 and second.First end 11 is directed to
One end of wind electricity blade blade root direction extension, the second end 12 are directed to the one of wind power blade tip lightening direction extension
End.First end 11 can expose to blade root outer face, first end 11 may be selected to be with blade root end face,
First end 11 is alternatively chosn to protrude from blade root end face certain altitude.The external diameter of bolt sleeve 1 can be by the second end
12 are gradually reduced to first end 11, with the big outer small bolt sleeve with dovetail effect in formation.This reality
Applying 1 outer surface of bolt sleeve 14 in example, axially upper compartment of terrain offers multiple bulge loops 16 or multiple grooves 17.
Preferred embodiment is that equally spaced car goes out multiple grooves 17, two phases on the basis of first embodiment
Bulge loop 16 can be formed between adjacent groove 17.By being then based on interior big outer small profile, so what is formed is each
Individual bulge loop 16 is the gauge structure such as non-in fact.The resin or fiber of bolt sleeve 1 and surrounding can be easy to this structure
Fully combined.The section of bulge loop 16 is also an option that as square, trapezoidal, semicircle or other inner sides greatly
The small shape in outside.
For concrete example, as shown in fig. 1, the outer surface of bulge loop 16 can be circular conical surface, and circular conical surface is oblique
Rate is can be controlled between 0.010 to 0.018, can provide applicable anchor force, moreover it is possible to prevents bolt sleeve 1
The tension of the second end 12 after burst on the inside of blade root.Also, the slope of the present embodiment outer surface is to pass through
Realized by the second end 12 to the thin outer wall of bolt sleeve 1 of 11 gradual car of first end, be not to use to second
End 12 gradually thickeies the straightforward procedure of outer wall.That is, external diameter and existing bolt at the second end 12
Cover it is identical, and between the external diameter at first end 11 is equivalent to the 85% to 90% of existing bolt sleeve.
In this way, can not only mitigate the overall weight of bolt sleeve 1, the second end 12 can also be avoided excessively to tie up
The inner thickness space of blade root, increase blade root bond strength.
As shown in figure 5, in the present exemplary embodiment, bolt sleeve 1 has an endoporus 13, endoporus 13
In-and-out bolt cover 1 first end 11, endoporus 13 along the axis of bolt sleeve 1 extend, endoporus 13 include leading portion 131,
Stage casing 132 and inner segment 133, in the present exemplary embodiment, endoporus 13 is substantially from first end 11 to the
The trisection of two end 12 forms these three segmentations.And in the present embodiment it is set in the stage casing 132 of endoporus 13
Internal threaded regions, it is spirally connected with this internal thread and external bolt.In this way, may be such that bolt sleeve 1 by
Power position is located at middle part so as to carry out load external pull in the middle part of blade root, avoids with the outside of blade root and inner side
Direct load external pull, the long-term test through laboratory, blade root can largely be improved with this and used
Life-span.Moreover, internal thread is located at stage casing 132, can also Fast Installation be easy to assemble, bolt is in leading portion 131
, can be quickly to silk at the internal thread of stage casing 132 after the guiding of certain distance, moreover it is possible to avoid because angle is not right
Cause to damage on the outside of stripped thread and blade root.Further, due to the slope of the present embodiment outer surface 14 be by by
Second end 12 realizes to the thin outer wall of bolt sleeve 1 of 11 gradual car of first end, so, at stage casing 132,
The outer wall thickness of bolt sleeve 1 can also ensure enough intensity, can be advantageous to light-weight design with this.
Shown in reference picture 3, Fig. 6, bolt sleeve 1 is provided with spline structure 15 in the position close to the second end 12,
Spline structure 15 is section non-circular structure., can be by cutting shape at the second end 12 for concrete example
Realize into multiple breach, preferably, cut in the corresponding position close to blade root inner surface one small
Plane, and it is small to cut another in the corresponding position close to blade root outer surface of opposite side on the other side
Plane, it is of course also possible to select to correspond to two facets of increase again between the two facets cut out,
To form equidistantly distributed.These planes have certain angle of cut with the axis of bolt sleeve 1, and preferably selection is reverse
In outer surface slope, to further enhance the deformable effect at the second end.With this, can with blade root knot
After conjunction, prevent bolt sleeve from being rotated in blade root.And the second end 12 can also be avoided excessively to tie up blade root
Inner thickness space, increase blade root bond strength.
According to an embodiment of the present invention, as shown in figure 5, endoporus 13 is at the end 12 of bolt sleeve 1 second
Can be open bore or blind hole.The inner of endoporus inner segment 133 is alignd or close to the second end 12, wherein,
The inner segment 133 of endoporus may be selected gradually to be expanded by outer end inboard end aperture.This is mainly by the second end 12
The external diameter for gradually expanding endoporus 13 is realized.The inner segment 133 of endoporus 13 is existed by the slope of outer end inboard end
Between 0.29 to 0.82.Through constantly checking, one there is the embodiment of preferable effect to be, the inner segment of endoporus by
The slope of outer end inboard end is 0.652.Here outer end refers to that the inner refers to towards this one end of blade root direction
Towards this one end of wind power blade tip lightening direction.Inner segment 133 selects gradually to be expanded by outer end inboard end aperture,
The overall weight of bolt sleeve 1 can not only be mitigated；The outer wall of bolt sleeve 1 outside inner segment 133 can also be caused to be more easy to
Deformation, to the end direction at the second end 12, gradually weaken rigidity and strengthen plasticity.So that bolt sleeve 1
After the overload pulling force received, the outer wall of bolt sleeve 1 outside inner segment 133 can be deformed inward, and be unlikely to overall spalling
Blade root profile, strengthen the anti-ability locally overloaded of blade root, avoid because local overload triggers blade root integrally to damage,
Security incident can largely be avoided.
In the above embodiment of the present invention, although bolt sleeve formed it is interior big outer small to be acted on dovetail, by
Gradually expanded by outer end inboard end aperture in the inner segment 133 of endoporus 13, be not only gradually thinned inner segment again
The outer wall of bolt sleeve 1 outside 133, also leaves deformation space between the outer wall of bolt sleeve 1 and bolt, makes
Obtain bolt sleeve 1 in the present embodiment and maximum static load power is increased by interior big outer small profile, but when load
After breaking through maximum static load power, although bolt sleeve 1 may be pulled, due to bolt sleeve 1 it is larger in
End can be deformed inward, so the thing of overall spalling blade root profile will not occur because of interior big outer small profile again
Therefore.
, can be directly overall pre- by multiple bolt sleeves 1 in the production of wind electricity blade in above-mentioned two embodiment
Wind electricity blade blade root is embedded in, blade root is optional synchronously integrally formed with blade body, is alternatively chosn to individually
It is molded after blade root in conjunction with blade body.
Hereinafter, the embodiment of the present invention provides another form of construction work：
Blade root built-in fitting embodiment
According to an embodiment of the present invention, there is provided a kind of blade root built-in fitting of wind electricity blade, it is this pre-buried
After part is preforming, wind electricity blade blade root is embedded in advance again in blade production.Built-in fitting can be in generally torus
Shape, wherein the built-in fitting bolt sleeve 1 joined integrally for having multiple above-described embodiments to provide, built-in fitting is with resin
Pre-molding in a mold after being mixed with fiber.The blade root built-in fitting of this pre-molding, can be with mass
Quick production, and qualification rate and structural strength can be better ensured that.The blade root built-in fitting of pre-molding
Can sufficiently it be detected before production and application, to avoid fitting into large-scale blade because blade root is bad
Entirety is scrapped.
Also, the blade root built-in fitting of pre-molding, in the corresponding bolt sleeve 1 using above-mentioned second embodiment
When, can be with because using pre-molding, in mould, fiber and resin are to be sufficiently mixed state
Uniformly enter after compression without dead angle in each groove 17 of bolt sleeve 1, be avoided that pre- again outside bolt sleeve 1
Wind fiber cloth.The blade root embedded part structure intensity of this technology is also greater than general technology.
The processing technology embodiment of bolt sleeve
In the above embodiment of the present invention, bolt sleeve may be selected to make by casting, cold or hot forging compacting.Specifically
Operating procedure is illustrated below：
After forging or cast blank part, it is heat-treated first, with destressing crystal grain thinning；Before cutting
Normalizing, improve machinability and mechanical and physical performance, go de-stress；It is quenched before semifinishing,
De-stress is gone, to improve comprehensive mechanical performance；The selection of positioning datum, machining benchmark and reference for assembling weight
Close；The Surface Machining step of bolt sleeve 1 is first thick rear essence, and repeatedly processing, steps up precision；Roughing
Car removes most of processing it is anticipated that finishing the deformation after amendment heat treatment, steps up the precision of part,
Reach requirement.
As shown in FIG. in the specific example shown in 3 to Fig. 6, bolt sleeve outer wall is non-uniform thickness dove-tail form knot
Structure, wall thickness is in 4.2mm between 12.5mm.Bolt sleeve length is in 270mm between 370mm.
Maximum outside diameter 50mm or so, two sections internal diameter 32mm or so before endoporus.Screw thread inside bolt sleeve,
For non-full bar Design of Screw Thread, screw thread typically can be at the middle part or rear portion in the blade root direction of bolt sleeve 1.Screw thread is grown
Degree is in 90mm between 115mm.Bolt sleeve one end open, the other end are to remain silent or be open.Remain silent
Or the other end wall thickness continuous transition of opening is thinned, i.e., inwall aperture, which is gradually extended to port, makes wall at an acute angle,
Or port wall thickness is less than 2.5mm.
Based on this bolt sleeve provided in an embodiment of the present invention, based on mechanical connection and member-retaining portion is bonded
Linkage function, the characteristics of being provided simultaneously with mechanical connection and bonding connection so that the cold-resistant thermal impact of product
The more preferable blade adaptability of energy is wider, can meet large-scale blade complex load requirement well.The present invention is to spiral shell
Bolt covers metal surface without processing particular/special requirement, belongs to environmental friendly product.
It should be understood that multiple examples described above (can such as tilt, reverse, horizontal, vertical along multiple directions
It is straight, etc.) and be utilized with multiple constructions, without departing from the principle of the present invention.Shown in accompanying drawing
Embodiment is only shown and described as the example of effective application of principle of the invention, and the present invention is not
It is limited to any concrete details of these embodiments.
Although disclosing the present invention with reference to some embodiments, without departing substantially from the scope of the present invention and
On the premise of category, a variety of variants and modifications can be carried out to described embodiment.It will therefore be appreciated that
The invention is not limited in the embodiment illustrated, its protection domain should be by the content of appended claims
And its structure of equal value and scheme limit.
Claims (10)
1. a kind of bolt sleeve of wind electricity blade, is embedded in wind electricity blade blade root in advance, it is characterised in that the bolt
Set includes first end and the second end；The bolt sleeve external diameter is gradually contracted from second end to the first end
It is small；
The bolt sleeve has an endoporus, and the endoporus penetrates the bolt sleeve first end, the endoporus edge
The bolt sleeve axis extension, the endoporus include leading portion, stage casing and inner segment, and the stage casing of the endoporus is set to
Internal thread.
2. the bolt sleeve of wind electricity blade as claimed in claim 1, it is characterised in that the first end is to institute
The extension of wind electricity blade blade root direction is stated, second end extends to the wind power blade tip lightening direction；Described
One end exposes to the blade root end face.
3. the bolt sleeve of wind electricity blade as claimed in claim 1, it is characterised in that the bolt sleeve appearance
Face is circular conical surface, and the bolt sleeve circular conical surface slope is between 0.010 to 0.018.
4. the bolt sleeve of wind electricity blade as claimed in claim 1, it is characterised in that the bolt sleeve is connecing
The position at nearly second end is provided with spline structure, and the spline structure is section non-circular structure.
5. the bolt sleeve of wind electricity blade as claimed in claim 1, it is characterised in that the bolt sleeve appearance
Face is circular conical surface, and the bolt sleeve circular conical surface slope is between 0.010 to 0.018；The bolt sleeve appearance
Axially upper compartment of terrain offers multiple bulge loops or multiple grooves in face.
6. the bolt sleeve of the wind electricity blade as described in any one of claim 1 to 5, it is characterised in that described
Endoporus is open bore or blind hole at the end of bolt sleeve second；The inner alignment or close of the endoporus inner segment
In second end, the inner segment of the endoporus is gradually expanded by outer end inboard end aperture；The inner segment of the endoporus
By the slope of outer end inboard end between 0.29 to 0.82.
7. the bolt sleeve of wind electricity blade as claimed in claim 6, it is characterised in that the inner segment of the endoporus
It is 0.652 by the slope of outer end inboard end.
8. the blade root built-in fitting of a kind of wind electricity blade, it is characterised in that the built-in fitting is embedded in wind electricity blade in advance
Blade root, in the built-in fitting it is joined integrally there are multiple bolt sleeves, the built-in fitting to be mixed with resin with fiber after
Pre-molding；Each bolt sleeve extends parallel to the wind electricity blade axis, and each bolt sleeve includes the
One end and the second end, the first end extend to the wind electricity blade blade root direction, and the first end exposes to
The blade root end face；Second end extends to the wind power blade tip lightening direction；Each bolt sleeve external diameter
It is gradually reduced from second end to the first end；
The bolt sleeve has an endoporus, and the endoporus penetrates the bolt sleeve first end, the endoporus edge
The bolt sleeve axis extension, the endoporus include leading portion, stage casing and inner segment, and the stage casing of the endoporus is set to
Internal thread.
9. the blade root built-in fitting of wind electricity blade as claimed in claim 8, it is characterised in that the bolt sleeve
Outer surface is circular conical surface, and the bolt sleeve circular conical surface slope is between 0.010 to 0.018；The bolt sleeve
Axially upper compartment of terrain offers multiple bulge loops or multiple grooves for outer surface.
10. a kind of wind electricity blade production method, it is characterised in that comprise the following steps：
Prepare the bolt sleeve of multiple wind electricity blades as described in any one of claim 1 to 7；
Prepare the blade root built-in fitting of the wind electricity blade as described in claim 8 or 9；
In wind electricity blade production, the wind electricity blade is incorporated into the blade root built-in fitting of the wind electricity blade
Blade root.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610311656.4A CN107366673A (en) | 2016-05-11 | 2016-05-11 | Bolt sleeve, blade root built-in fitting and the wind electricity blade production method of wind electricity blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610311656.4A CN107366673A (en) | 2016-05-11 | 2016-05-11 | Bolt sleeve, blade root built-in fitting and the wind electricity blade production method of wind electricity blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107366673A true CN107366673A (en) | 2017-11-21 |
Family
ID=60304716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610311656.4A Pending CN107366673A (en) | 2016-05-11 | 2016-05-11 | Bolt sleeve, blade root built-in fitting and the wind electricity blade production method of wind electricity blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107366673A (en) |
Cited By (5)
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| CN109296507A (en) * | 2018-10-15 | 2019-02-01 | 株洲时代新材料科技股份有限公司 | A kind of pre-buried connection structure of wind-powered electricity generation composite material blade blade root and wind power plant |
| CN114770984A (en) * | 2022-06-17 | 2022-07-22 | 北京航空航天大学宁波创新研究院 | Bolt sleeve for connecting wind power blade root and embedded strength improving method thereof |
| CN115111249A (en) * | 2022-08-02 | 2022-09-27 | 远景能源有限公司 | Embedded bolt sleeve and wind driven generator |
| CN116164022A (en) * | 2023-04-23 | 2023-05-26 | 新创碳谷集团有限公司 | Wind-powered electricity generation blade root bolt housing and blade root connection structure |
| WO2023117010A1 (en) * | 2021-12-21 | 2023-06-29 | Vestas Wind Systems A/S | Bushing for connecting a rotor blade to a rotor hub in a wind turbine |
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| CB02 | Change of applicant information |
Address after: 100192 Dongsheng Science Park, Zhongguancun, 66 Xixiaokou Road, Haidian District, Beijing. 9 Floors, Block C, Building 6, Area B, North Territory Applicant after: Sinomatech Wind Power Blade Co., Ltd. Applicant after: SINOMA TECHNOLOGY (PINGXIANG) WIND TURBINE BLADE CO., LTD. Address before: 102101 Badaling Economic Development Zone, Yanqing, East Ring Road, No. 1, No. Applicant before: Sinomatech Wind Power Blade Co., Ltd. Applicant before: SINOMA TECHNOLOGY (PINGXIANG) WIND TURBINE BLADE CO., LTD. |
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Application publication date: 20171121 |
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| WD01 | Invention patent application deemed withdrawn after publication |