CN209718680U - A kind of low wind speed wind electricity blade reinforces precast body and Wind turbines - Google Patents
A kind of low wind speed wind electricity blade reinforces precast body and Wind turbines Download PDFInfo
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- CN209718680U CN209718680U CN201822037192.XU CN201822037192U CN209718680U CN 209718680 U CN209718680 U CN 209718680U CN 201822037192 U CN201822037192 U CN 201822037192U CN 209718680 U CN209718680 U CN 209718680U
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Abstract
The utility model discloses a kind of low wind speed wind electricity blades to reinforce precast body, for the profile-followed reinforcement precast body prepared using wind electricity blade outer surface local location as mold.The invention also discloses a kind of low wind speed Wind turbines, including blade, the blade local location is bonded with above-mentioned reinforcement precast body；The utility model provides a kind of low wind speed blade reinforcement precast body locally quickly reinforced for low wind speed wind electricity blade, carries out the reinforcement of wind field blade using the reinforcement precast body, reinforcement is easy to operate, high-efficient, has excellent performance.The utility model additionally provides a kind of low wind speed Wind turbines, and the blade weak part or damage location after longtime running can quickly be reinforced by being bonded the prefabricated intensive aspect.The quick reinforcement that the utility model is suitable for wind field blade regional area is suitable for popularization and application especially suitable for the quick reinforcement of the batch blade with identical localised reinforced areas.
Description
Technical field
The utility model relates to wind electricity blade maintenance areas, reinforce precast body more particularly to a kind of low wind speed wind electricity blade
And Wind turbines.
Background technique
The low wind speed wind-resources in China are more wide, therefore developing suitable for the Wind turbines of low wind speed resource is China's wind-powered electricity generation hair
One of emphasis direction of exhibition.In this kind of Wind turbines, low wind speed composite material wind-power blade is that it effectively captures low wind speed and wind
One of the critical component of energy.Wind electricity blade running environment is complicated.When wind electricity blade operation, the region of blade local weak is being transported
Stress concentration phenomenon can be generated when will receive the effect of the multiple load such as wind load in row, goes down will lead to local failure failure for a long time,
Influence blade overall performance.Therefore the local weak part of the blade local weak part especially blade of wind field operation is carried out
Reinforcement is of great significance.It is mainly at present hand paste reinforcement for wind field blade local reinforcement method.Hand pastes reinforced resin
Content is not easily controlled, and porosity is high, and reinforcement strength is low, and it is exactly complicated for operation, hardly possible that existing method, which is not interfacial bonding property difference,
To meet intensity and efficiency requirements.
CN102627011 patent discloses reinforcement and the restorative procedure of a kind of blade.This method is by using vinyl tree
Rouge hand paste process to reinforcement outside blade and including wind field outside region to be repaired carry out reinforcement and reparation.This method is due to vinyl
Interface performance of the resin usually in conjunction with blade epoxy-resin systems is poor, and will lead to subsequent reinforcing effect cannot meet the requirements.
CN105196575 patent discloses a kind of method for maintaining for wind generator set blade.This method is first
It needs to cut down defect area, then cut portion is handled, complete fixed and reinforcement finally by hand paste process.
Due to blade profile complexity, partial cut is to high operation requirements and is easy to cause to damage to other regions.Another whole operation process
It is more complicated, it is difficult to meet efficiency requirements.And this method is only applicable to the maintenance for defect part occurred and reinforcement.
It can be seen that above-mentioned existing wind electricity blade is in maintenance, it is clear that there are still there is inconvenient and defect, and be urgently subject to
It is further improved.How a kind of low wind speed wind electricity blade local quickly reinforcement easy to operate, high-efficient, have excellent performance is founded
Method becomes current industry and needs improved target.
Utility model content
First technical problem to be solved in the utility model is to provide a kind of locally fast for low wind speed wind electricity blade
The low wind speed blade that speed is reinforced reinforces precast body, and making it, reinforcement is easy to operate, high-efficient, has excellent performance.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of low wind speed wind electricity blade reinforcement precast body, for what is prepared using wind electricity blade outer surface local location as mold
Profile-followed reinforcement precast body.
It is further improved as the utility model, it is pre- to prepare the profile-followed reinforcement using vacuum bag dry method instillation process
Body processed.
Further, the profile-followed reinforcement precast body is prepared using vacuum bag wet processing.
Further, the reinforcement precast body is to be mutually butted multiple, reinforces the butt end of precast body using staggered floor
Ply angles can be mutually overlapped by the ply angles of staggered floor between adjacent reinforcement precast body.
Further, the inner surface for reinforcing precast body is provided with release cloth.
Further, the inner surface for reinforcing precast body is provided with release cloth, between the adjacent reinforcement precast body
Seam crossing is provided with release cloth.
Second technical problem to be solved in the utility model be to provide a kind of low wind speed Wind turbines, makes it through long-term
Postrun blade weak part or damage location can quickly be reinforced, and reinforcement is easy to operate, high-efficient, has excellent performance.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of low wind speed Wind turbines, including blade, the blade local location are bonded with above-mentioned reinforcement precast body.
Further, two layers of twin shaft cloth is equipped with using wet process bag pressure method in the circumferential profile for reinforcing precast body.
Further, the reinforcement precast body be mutually butted it is multiple, the docking site use wet process bag pressure
Method is equipped with two layers of twin shaft cloth.
By using above-mentioned technical proposal, the utility model is at least had the following beneficial effects:
1, the preparation and application for reinforcing precast body, compared with traditional method, with easy to operate, reinforcement is high-efficient, property
Can be excellent the features such as.
2, profile-followed reinforcement precast body is prepared using mature vacuum bag dry method instillation process or vacuum bag wet processing, especially
It is using vacuum bag dry method instillation process, and preparation method is simple, high-efficient.
3, precast body will be reinforced and is divided into multiple, the later period is facilitated to install, the adjacent paving for reinforcing passing through between precast body staggered floor
Layer structure is mutually overlapped, this kind of structure setting keeps lap-joint stronger, and staggered floor combines closer.
4, reinforce precast body inner surface (as mold wind electricity blade outer surface and reinforce precast body laying it
Between) setting release cloth, it is ensured that its inner surface has certain roughness, convenient for bonding.
5, the twin shaft cloth that wet process pressure bag method is laid with is conducive to bubble discharge in reinforcement and guarantees reinforcing property.
6, the utility model is suitable for the quick reinforcement of wind field blade regional area；It needs to reinforce for another fruit wind field blade
Region have crackle or other need defects for repairing, can also after conventional method polishes repairing, using above-mentioned reinforcement precast body into
Row is reinforced；Quick reinforcement especially suitable for the batch blade with identical localised reinforced areas.
Detailed description of the invention
Above-mentioned is only the general introduction of technical solutions of the utility model, in order to better understand the technology hand of the utility model
Section, below in conjunction with attached drawing, the utility model is described in further detail with specific embodiment.
Fig. 1 is staggered floor, the ply angles schematic diagram for reinforcing precast body in an embodiment of the present invention.
Fig. 2 is the preparation flow figure for reinforcing precast body；
Fig. 3 is to reinforce precast body wind field to reinforce bonding phase flow figure；
Fig. 4 is the bonding schematic diagram that precast body is reinforced in the face PS and the face SS；
Fig. 5 is that the face PS (A) and the face SS (B) reinforce precast body integral adhesive schematic diagram.
Specific embodiment
The technical solution of the utility model is described in further detail below by way of specific example, but is not constituted to this
The limitation or constraint of patent.Various raw materials used in following embodiment can be obtained through commercial channels.
The low wind speed wind electricity blade of the utility model reinforces precast body, is mainly used for low wind speed wind electricity blade carry out office
Portion quickly reinforces, and making it, reinforcement is easy to operate, high-efficient, has excellent performance.
Cooperate shown in Fig. 1, which reinforces precast body 2, is with 1 outer surface local location of wind electricity blade work
For the profile-followed reinforcement precast body of mold preparation.1/2 profile-followed for reinforcing precast body and being less than percentage of blade surface area, belongs to part and adds
By force.Local strengthening reinforcement in the prior art is directly to be handled in the blade surface of wind field, and the utility model is logical
Prior prefabrication is crossed, it is pre- to prepare profile-followed reinforcement as mold for blade before dispatching from the factory or with wind field blade same type
Body processed weakness zone or breakage (crack or hole etc.) region can occur after the blade of wind field runs a period of time, directly
It connects and quick reinforcement can be realized using corresponding reinforcement precast body, form one kind in wind field blade local location and be bonded with above-mentioned add
The low wind speed Wind turbines of strong precast body.
Below to the preparation for reinforcing precast body being related in the present embodiment and using above-mentioned reinforcement precast body to wind turbine
The method that group blade is reinforced carries out expansion description.
As shown in Fig. 2, the preparation process for reinforcing precast body includes the following steps:
S11, the vane operation region as mold is cleaned out, and expands 50-150mm, preferably 100mm along surrounding；
By the step early-stage preparations can be carried out for vacuum bag dry method instillation process.
S12, vacuum bag dry method instillation process carry out the techniques such as laying and perfusion；
It in this step, preferably, can be in the laying of wind electricity blade outer surface and reinforcement precast body as mold
Between release cloth is set.The setting of release cloth can form rough surface in the outer surface for reinforcing precast body after release cloth is torn,
Conducive to the bonding in later period.
In this step, preferably, above-mentioned reinforcement precast body is to be mutually butted multiple, multiple settings can avoid
One large-sized problem for reinforcing the installation inconvenience of precast body later period is only set；When using multiple, as preferred mode, add
The butt end of strong precast body uses the ply angles of staggered floor, and adjacent reinforces carrying out between precast body by the ply angles of staggered floor
Mutually overlap joint, this kind of structure setting keep lap-joint stronger, and staggered floor combines closer.When to be multiple, it is preferable that release cloth
It also may be arranged at multiple seam crossings for reinforcing precast body, further increase the roughness of seam crossing and facilitate multiple reinforcement precast bodies
It is mutually isolated when preparing simultaneously.
Specific steps are as follows: patch one encloses sealant in operating area periphery, successively smears release agent in operating area, is coated with one
Layer isolation film, release cloth；And the 6 layers of E-3AX-1215-7/2.5/2.5- of laying of requirement progress shown in the laying according to Fig. 1 (0 °/-
30°/30°)；Wherein chord length direction and length direction staggered floor are as shown in Figure 1, such as can be in the every faulted layer 50mm in blade root direction, blade tip
The every faulted layer 100mm in direction, the every faulted layer 30mm in leading edge direction.After laying, successively on glass-fiber-fabric be laid with release cloth, every
From film, flow-guiding screen；Vacuum bag film, grafting exhaust tube and glue inlet tube are bonded, using vacuum assistant resin infused by 035C+037H ring
Epoxy resin system, which is imported into, to be reinforced in precast body.
Above-mentioned steps are irrigated using vacuum bag dry method instillation process, are locally with existing wind electricity blade to realize
Precast body is reinforced in mold preparation to be pasted using hand and using conventional vacuum bag wet processing according to default ply sequence
Vacuum flexible bag moulding after laying.
S13, heating 65-75 DEG C, preferably 70 DEG C 5-7 hours.
Resin solidification can be formed molding precast body by heating.
S14, it after being examined confirmation surface shore hardness >=70, demoulds and tears vacuum bag film off, retain other auxiliary materials, will reinforce
Precast body is complete to be marked；Reinforcement precast body split by abutment joint and is removed.
It prepares after reinforcing precast body, it can be reinforced according to the case where wind field blade, of course, it is possible to dispatching from the factory
The reinforcement precast body of preceding prefabricated batch in advance, can also be after there is weakness zone or affected area in discovery wind field blade again in factory
Precast body is reinforced in preparation.
Preferably, will reinforce passing through wet process bag and method being pressed to increase after precast body is adhered on wind electricity blade to be strengthened
Circumferential profile and the docking site for forcing strong precast body press method to be conducive to bubble in reinforcement and are discharged and guarantee benefit by wet process bag
Epistasis energy.
Specifically, step reinforcement precast body being adhered on wind electricity blade to be strengthened is as shown in Figure 3, comprising:
S21, it needs the part reinforced to polish in blade, polishes off blade surface painter's putty to exterior skin layer, beat
Region is ground, and expands 50-150mm, preferably 100mm along surrounding.Operating area processing.Operating area is cleaned out, is cleaned out
Operating area guarantees coarse operating space, cleaning, without sundries such as dust, and confirmation operation area cleans foreign.
Above-mentioned steps can for reinforce the Nian Jie of precast body coarse, clean surface is provided.
S22, in sequence by reinforce precast body be bonded together: cooperation Fig. 4 shown in, choose firstly the need of laying reinforcement it is pre-
Body processed such as reinforces precast body 21 or 22, and examination patch reinforces fixation position of the precast body on blade with record after type, and the reinforcement is pre-
Release cloth at body bonding plane and abutment joint processed removes, remaining place do not remove, then blade bonding region uniformly
Smear the bonding agent 3 of 3mm ± 2mm thickness；By the reinforcement precast body alignment mark position, it is pasted onto blade surface, it is pre- from first pasting
Product top is slowly bonded down along blade, and prefabricated component and blade are compacted by side bonding edge, is finally bonded to prefabricated component lower part,
Prefabricated component is tapped using rubber hammer, is allowed to be bonded stronger；Then, cooperate shown in Fig. 5, using same method in order by the face PS
Reinforcement precast body 23,25, the reinforcement precast body 24,26,28 in the face 27, SS successively affix to blade outer surface to be strengthened.
S23, then is reinforcing being fixed on blade surface for precast body is reinforced using bandage in the middle part of precast body；Heat 65-75
DEG C, preferably 70 DEG C, 4-6 hours, wait bonding agent solidification after the completion of, remove surface auxiliary material and bandage；Pass through bandage secure fit
It is heating and curing, it is ensured that adhesive effect.
S24, will reinforce precast body docking at and outer outline area wet process bag press 2 layers of twin shaft cloth 2AX-0808, normal temperature cure
It can polish and powdering or be heating and curing to surface shore hardness >=70 to surface；Finally it is surface-treated.
In conclusion the utility model provides a kind of low wind speed leaf locally quickly reinforced for low wind speed wind electricity blade
Piece reinforces precast body, carries out the reinforcement of wind field blade using the reinforcement precast body, reinforcement is easy to operate, high-efficient, has excellent performance.This
Utility model additionally provides a kind of low wind speed Wind turbines, and the blade weak part or damage location after longtime running can lead to
It crosses the bonding prefabricated intensive aspect quickly to be reinforced, reinforcement is easy to operate, high-efficient, has excellent performance.The utility model is suitable
For the quick reinforcement of wind field blade regional area, especially suitable for the quick of the batch blade with identical localised reinforced areas
Reinforce, is suitable for popularization and application.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, those skilled in the art make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above,
It falls within the protection scope of the present utility model.
Claims (8)
1. a kind of low wind speed wind electricity blade reinforces precast body, which is characterized in that for using wind electricity blade outer surface local location as
The profile-followed reinforcement precast body of mold preparation；
The reinforcement precast body be mutually butted it is multiple, reinforce precast body butt end use staggered floor ply angles, it is adjacent
Reinforcement precast body between mutually overlapped by the ply angles of staggered floor.
2. low wind speed wind electricity blade according to claim 1 reinforces precast body, which is characterized in that filled using vacuum bag dry method
Note technique prepares the profile-followed reinforcement precast body.
3. low wind speed wind electricity blade according to claim 1 reinforces precast body, which is characterized in that use vacuum bag wet process work
Skill prepares the profile-followed reinforcement precast body.
4. low wind speed wind electricity blade according to claim 1 reinforces precast body, which is characterized in that the reinforcement precast body
Inner surface is provided with release cloth.
5. low wind speed wind electricity blade according to claim 1 reinforces precast body, which is characterized in that the reinforcement precast body
Inner surface is provided with release cloth, and the seam crossing between the adjacent reinforcement precast body is provided with release cloth.
6. a kind of low wind speed Wind turbines, including blade, which is characterized in that the blade local location is bonded with claim 1-
5 described in any item reinforcement precast bodies.
7. low wind speed Wind turbines according to claim 6, which is characterized in that in the circumferential profile for reinforcing precast body
Two layers of twin shaft cloth is equipped with using wet process bag pressure method.
8. low wind speed Wind turbines according to claim 7, which is characterized in that use wet process bag pressure in the butt end
Method is equipped with two layers of twin shaft cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822037192.XU CN209718680U (en) | 2018-12-06 | 2018-12-06 | A kind of low wind speed wind electricity blade reinforces precast body and Wind turbines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822037192.XU CN209718680U (en) | 2018-12-06 | 2018-12-06 | A kind of low wind speed wind electricity blade reinforces precast body and Wind turbines |
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| Publication Number | Publication Date |
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| CN209718680U true CN209718680U (en) | 2019-12-03 |
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| CN201822037192.XU Active CN209718680U (en) | 2018-12-06 | 2018-12-06 | A kind of low wind speed wind electricity blade reinforces precast body and Wind turbines |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109291468A (en) * | 2018-12-06 | 2019-02-01 | 国电联合动力技术有限公司 | Low wind speed wind electricity blade local strengthening method reinforces precast body and Wind turbines |
| CN113580607A (en) * | 2021-06-01 | 2021-11-02 | 国电联合动力技术有限公司 | Plate product preparation method, plate product and wind power blade component preparation method |
-
2018
- 2018-12-06 CN CN201822037192.XU patent/CN209718680U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109291468A (en) * | 2018-12-06 | 2019-02-01 | 国电联合动力技术有限公司 | Low wind speed wind electricity blade local strengthening method reinforces precast body and Wind turbines |
| CN113580607A (en) * | 2021-06-01 | 2021-11-02 | 国电联合动力技术有限公司 | Plate product preparation method, plate product and wind power blade component preparation method |
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