CN202971053U - Wind wheel blade of wind turbine generator - Google Patents
Wind wheel blade of wind turbine generator Download PDFInfo
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- CN202971053U CN202971053U CN201220543126XU CN201220543126U CN202971053U CN 202971053 U CN202971053 U CN 202971053U CN 201220543126X U CN201220543126X U CN 201220543126XU CN 201220543126 U CN201220543126 U CN 201220543126U CN 202971053 U CN202971053 U CN 202971053U
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Abstract
The utility model discloses a wind wheel blade of a wind turbine generator. The wind wheel blade can prevent ice on the surface actively and solve problems of performance degradation and low security of the wind turbine generator caused by blade icing. The wind wheel blade is provided with a casing, wherein the casing comprises at least one layer of a glass fiber fabric and at least one layer of a conductive film which is laid with the glass fiber fabric in a stacking manner; and the conductive film comprises a permeable substrate and an electrode arranged in the permeable substrate. According to the wind wheel blade for the wind turbine generator, the conductive film is added in the casing, a gel-resin mixture is vacuum-injected in the conductive film and the glass fiber fabric, and the wind wheel blade is formed after curing. The electrode is arranged in the conductive film, heat is produced after electrification, the heat efficiency is high, the temperature of the blade surface can be raised rapidly, the blade surface can prevent ice actively, the blade icing time is shortened, service lives of a wind turbine generator set and the blade are prolonged, and the problems performance degradation and low security of the wind turbine generator caused by blade icing are solved.
Description
Technical field
The utility model relates to wind power generation field, is specifically related to a kind of wind wheel blade for wind-driven generator.
Background technique
Wind wheel blade is the important component part of wind-driven generator.For the making of wind wheel blade, because traditional hand paste process efficiency is low, end product quality is unstable, and qualification and environmental conditions to operator rely on higher, therefore the wind wheel blade manufacturer generally adopts vacuum suction technique both at home and abroad, and the resin compound suction is entered the glass fibre laying to make wind wheel blade.
Described vacuum suction technique refers to utilize vacuum resin compound to be imported the reinforcing fiber of doing, and vacuumizes the formation negative pressure at a fibrolaminar end, the blade production technology that resin begins to pour into from the other end.
See also Fig. 1, Fig. 1 is the structural representation of a kind of set-up mode of wind wheel blade processing device in prior art.
As shown in Figure 1, the process that adopts vacuum suction technique to make wind wheel blade is generally:
Lay for after the release cloth 002 of the finished product demoulding in specific wind wheel blade mould 001, glass fibre laying 003 is laid on release cloth 002 as requested; Then, lay successively on the surface of glass fibre laying 003 release cloth 002, coutroi velocity isolating film 004, be used for flow-guiding screen 005 that the homing tree lipoprotein mixture flows and the sealing film 006 of sealed mold; Wherein, release cloth 002 has certain permeability, and isolating film 004 and flow-guiding screen 005 have specific permeability hole, and sealing film 006 fits with mould 001, to consist of seal chamber; Simultaneously, will carry respectively the injected rubber hose 008 of resin compound 007 and the vacuum tube 009 insert-seal film 006 that is connected vacuum pump 010; And then after unlatching vacuum pump 010 vacuumized, resin compound 007 entered into glass fibre laying 003 after permeating successively flow-guiding screen 005, isolating film 004 and release cloth 002 under the effect of negative pressure of vacuum, formed required wind wheel blade after overcuring.
Certainly, can also adopt prepreg technique to make wind wheel blade: prepreg technique refers to directly the Procuring material is laid in blade mold, and then heating makes it reach the processing technology that complete solid state is made wind wheel blade.Wherein, the Procuring material refers to the even Procuring material that forms after fiber tuft or fibre cloth infiltrate through resin.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is exterior skin, sandwich material and the inside panel structural representation of the aerofoil section housing of prior art blade; Fig. 3 is the aerofoil section exterior skin structural representation of prior art blade.
The wind wheel blade of wind power generating set (hereinafter to be referred as blade) has housing, and housing comprises glass fiber cloth, and housing of the prior art generally comprises exterior skin 01, sandwich material 02 and the inside panel 03 that ecto-entad stacks gradually laying.Wherein, exterior skin 01 generally is comprised of several layers of glass fiber cloth 011, as shown in Figure 3; The structure of inside panel 03 and exterior skin 01 are similar, also can adopt multilayer woven glass fabric 011 to lay and form; Sandwich material 02 is filled between exterior skin 01 and inside panel 03, to strengthen the structural rigidity of blade, prevents local buckling, improves the anti-load-carrying ability of whole wind wheel blade, and existing sandwich material generally comprises PVC foam core material, PMI sandwich material etc.
Usually, also be provided with protective layer (not showing in Fig. 2) in the outside of exterior skin 01, protective layer is coating and protective film, is coated with, is attached to the surface of exterior skin 01.
Please refer to Fig. 4 and Fig. 5, Fig. 4 is the leading edge reinforced layer structural representation of prior art blade; Fig. 5 is the local enlarged diagram of leading edge reinforced layer in Fig. 4.
After vane mold matching, need carry out blade inlet edge 04 and trailing edge 05 reinforcement (not showing the trailing edge reinforced layer herein), namely at blade inlet edge and trailing edge suction or hand paste glass fiber cloth 06, the anti-erosion performance of blade inlet edge 04 and trailing edge 05 can be improved to a certain extent, the reliability of vane mold matching can also be strengthened.
Need to prove, described inside and outside and front and back are all take wind wheel blade as reference herein, near the side at wind wheel blade center be in, correspondingly, away from the side at its center be outside; The head end of whole aerofoil profile is the leading edge of blade, and correspondingly, an end relative with leading edge is its trailing edge, and trailing edge is the tail end of aerofoil profile.In the situation that without specifying, all adopt above-mentioned definition to define inside and outside and front and back herein.
In China, wind power generating set generally is positioned at high and cold, coastal area, although the existing wind wheel blade that adopts above-mentioned technique to make has certain intensity and suppleness, due to cold weather, icing phenomenon often appears in blade.This just causes the performance of blade and the output power of unit not to reach designing requirement, and aeroperformance and security of operation that freezing of blade also can affect wind power generating set bring very big harm to wind power generating set.
For solving the wind wheel blade ice formation issues, most research of present stage all concentrates on icing forming process and numerical simulation and the performance prediction of the rear aerofoil profile of freezing.Simultaneously, company is also arranged to the anti-freeze physical method of taking of blade, as opening up at wind wheel blade inner chamber, root of blade position or blade to locating to arrange hot blast conveying pipe, by hot blast conveying pipe, inner chamber input hot air is improved the blade surface temperature, thereby solve the ice formation issues of blade surface.Also there is company to improve the icing situation of blade surface by hydrophobic coating.But the anti-freeze mode of above these blades is all passive deicing, just removes after blade freezes, and can not play prevention effect, and deicing is limited in one's ability.
Therefore, how designing a kind of wind wheel blade, freeze initiatively to prevent its blade surface, is those skilled in the art's technical issues that need to address.
The model utility content
The problem that the utility model solves is to provide a kind of wind wheel blade of wind-driven generator, can realize that blade surface is initiatively anti-icing, can solve wind power generating set hydraulic performance decline and the low problem of Security that blade freezes and brings.
In order to solve the problems of the technologies described above, the utility model provides a kind of wind wheel blade of wind-driven generator, described wind wheel blade has housing, described housing comprises one deck glass fiber cloth at least and the conductive film of one deck and the stacked laying of described glass fiber cloth at least, and described conductive film comprises the osmosis type base material and is arranged in electrode in described osmosis type base material.
Added conductive film in the housing of wind wheel blade of the present utility model, the suction of resin compound vacuum in conductive film and glass fiber cloth laying, through overcuring, has been formed wind wheel blade.Be furnished with electrode in conductive film, can produce heat after energising, its thermal efficiency is higher, the blade surface temperature is raise, realize that effectively blade surface is initiatively anti-icing, reduce the blade icing time, improve the life-span of wind power generating set and blade, solve wind power generating set hydraulic performance decline and safety problem that blade freezes and brings.
Preferably, be coated with conducting medium on described osmosis type base material, and process through insulation.
Preferably, the outermost surface of described housing is described glass fiber cloth.Because the intensity of glass fiber cloth is higher, the outermost surface that glass fiber cloth is arranged on housing can effectively protect its internal structure, can extend to a certain extent the working life of wind wheel blade; The more important thing is, described conductive film can be arranged on any one deck in described glass fiber cloth, and its structure is more flexible; The multilayer conductive film can also be set in the inboard of glass fiber cloth, to strengthen the effect of conductive exothermal.
Preferably, the second layer of described housing ecto-entad is described conductive film.When conductive film was arranged on the second layer, the heat that conductive film produces can be delivered to the outside of housing effectively, and to improve the surface temperature of wind wheel blade, its heat conducting efficient is higher, thereby played better the effect that prevents that its surface from freezing.
Preferably; described housing comprises protective layer, exterior skin, laminboard layer and the inside panel of laying successively from outside to inside; described exterior skin and described inside panel include the described glass fiber cloth of some layers; each described conductive film is arranged in described protective layer, and/or is arranged between two adjacent glass fiber cloths of described exterior skin.
Conductive film can also be arranged in the protective layer and/or exterior skin of described housing; these two layings are relatively pressed close to the outside of described housing; its structure is comparatively tight, intensity is higher; can effectively protect the internal structure of blade, therefore conductive film is arranged on the requirement that above-mentioned any one laying all can be taken into account the anti-freeze and working strength of blade.Certainly, can further strengthen the anti-freeze effect of blade at the two-layer interior conductive film that all arranges.
Preferably, leading edge and/or the trailing edge of described outside are coated with reinforced layer, and described reinforced layer comprises one deck glass fiber cloth at least and the conductive film of one deck and the stacked laying of described glass fiber cloth at least.
For realizing the protection to housing, can increase reinforced layer at leading edge and/or the trailing edge of housing, and increase conductive film in this reinforced layer, can protect targetedly blade.The structure setting of this multiple interpolation conductive film can improve the anti-freeze effect of blade integral significantly.
Preferably, the outermost surface of described reinforced layer is described glass fiber cloth.
Preferably, the described reinforced layer second layer from outside to inside is described conductive film.
The laying of reinforced layer can be used for reference above-mentioned housing and arranges herein, glass fiber cloth is arranged on outermost surface, and conductive film is arranged on the second layer, and its beneficial effect as mentioned above.
Description of drawings
Fig. 1 is the structural representation of a kind of set-up mode of wind wheel blade processing device in prior art;
Fig. 2 is exterior skin, sandwich material and the inside panel structural representation of the aerofoil section housing of prior art blade;
Fig. 3 is the aerofoil section exterior skin structural representation of prior art blade;
Fig. 4 is the leading edge reinforced layer structural representation of prior art blade;
Fig. 5 is the local enlarged diagram of leading edge reinforced layer in Fig. 4;
The aerofoil section exterior skin structural representation of the wind wheel blade that Fig. 6 provides for a kind of embodiment of the utility model;
The wind wheel blade leading edge reinforced layer structural representation that Fig. 7 provides for a kind of embodiment of the utility model;
Fig. 8 is the flow chart of a kind of processing technology of wind wheel blade of the present utility model.
Embodiment
In order further to understand the utility model, below in conjunction with embodiment, the utility model preferred embodiment is described, but should be appreciated that these describe just as further illustrating feature and advantage of the present utility model, rather than to the restriction of the utility model claim.
Please refer to Fig. 6, the aerofoil section exterior skin structural representation of the wind wheel blade that Fig. 6 provides for a kind of embodiment of the utility model.
The utility model provides a kind of wind wheel blade of wind-driven generator, and the housing of wind wheel blade comprises one deck glass fiber cloth 1 at least and the conductive film 2 of one deck and the 1 stacked laying of described glass fiber cloth at least.When housing according to above-mentioned exterior skin, the laminboard layer of filling sandwich material, when the inside panel level is arranged, this conductive film 2 is equivalent to both can be arranged in exterior skin, also can be arranged in inside panel, certainly, conductive film 2 can also be set all in exterior skin and inside panel.
As shown in Figure 6, anti-icing in order to realize blade, one or more layers glass fiber cloth 1 that conductive film 2 can be substituted in exterior skin, also can set up conductive film 2 in exterior skin, be that exterior skin comprises glass fiber cloth 1 and conductive film 2, conductive film 2 can be one or more layers, and conductive film 2 can be arranged in innermost layer, also can be clipped between which floor glass fiber cloth 1.For ease of the conduction heat, blade to be protected, conductive film 2 can be arranged in the nearly surface layer of blade, namely is arranged in the outside laying of blade.
Can expect, in preferred embodiment, the outermost surface of housing is glass fiber cloth 1.Because the intensity of glass fiber cloth is higher, structure is comparatively tight, and its outermost surface that is arranged on housing can effectively be protected the internal structure of blade, to improve the overall performance of blade, extends its working life; The more important thing is, conductive film 2 can be arranged on any one deck of glass fiber cloth inboard, perhaps in the inboard of glass fiber cloth, multilayer conductive film 2 is set.On this basis, conductive film 2 can be arranged on the second layer from outside to inside, namely under the prerequisite that the blade interior structure is protected, to greatest extent heat is delivered to effectively the top layer of blade, improves the surface temperature of blade, prevents that blade surface from freezing.
In addition, as mentioned above, housing generally comprises protective layer and the exterior skin of laying successively from outside to inside, and conductive film 2 can be arranged on exterior skin layer or protective layer, and conductive film 2 can also all be set in exterior skin and protective layer.All comparatively near the surface of housing, therefore being arranged in above-mentioned any one laying, conductive film 2 all can realize preferably the function that blade is anti-freeze due to exterior skin and protective layer.Certainly, can further strengthen the anti-freeze effect of blade at the two-layer interior conductive film 2 that all arranges.
Wherein, protective layer can be one deck or laminated coating, also can be some layers of protective film, when it is coating, can at first conductive film 2 be laid on the outside of exterior skin, and then apply coating outside conductive film, conductive film 2 and the coating of this moment consist of protective layer jointly; When protective layer is protective film, conductive film 2 can be arranged between two adjacent protective films, namely conductive film 2 and protective film form protective layer jointly.
Please refer to Fig. 7, the wind wheel blade leading edge reinforced layer structural representation that Fig. 7 provides for a kind of embodiment of the utility model.
When the leading edge of outside and/or trailing edge are provided with reinforced layer, can also increase conductive film 4 in described reinforced layer, as shown in Figure 7, this reinforced layer comprises one deck glass fiber cloth 3 at least and the conductive film 4 of one deck and the stacked laying of described glass fiber cloth at least.The setting of reinforced layer has been equivalent in the outer installment of housing one deck protective coating, and conductive film 4 can be delivered to heat the outside of reinforced layer and the outer surface of housing; That is to say, conductive film 4 can prevent that cool air from invading housing, even and the reinforced layer that is coated on outside has frozen, under the effect of housing conductive film 2 within it, also can prevent from himself from freezing, this multiple-protection from outside to inside can improve the anti-freeze ability of blade significantly.
The structure of this reinforced layer also can arrange by the analogy housing accordingly.
A kind of comparatively preferred embodiment in, the outermost surface of described reinforced layer is described glass fiber cloth 3, to guarantee the bulk strength of blade.
Further can expect, the described reinforced layer second layer from outside to inside can be described conductive film 4, be that conductive film 4 is arranged in the laying of blade near the surface, with effective transferring heat, improve the temperature of its outside glass fiber cloth 3, and then the anti-freeze ability of enhancing blade exterior, guarantee its normal operation.
Wherein, conductive film 2 and conductive film 4 all can comprise base material, are furnished with electrode in base material, can smear conducting medium on base material, and carry out insulation processing.For realizing the insulation of base material and blade exterior, can adopt the base material coating after dielectric film will be smeared conducting medium, also can smear coatings on base material, in order to complete described insulation processing process; A kind of more preferred embodiment in, can also realize by means of the structure of blade itself insulation of base material and outside, to complete above-mentioned insulation processing: this is that the process of laying glass fiber cloth and resin by injection mixture in the blade processing process is also the process of insulation processing that base material is carried out because the resin compound that is adopted in the blade processing process and glass fiber cloth are all insulating material preferably.Base material can comprise cotton, nonwovens, compact shape cloth, with cloth or the glass fiber cloth of hole; Base material need possess certain permeability, and namely the base material that adopts of the utility model is the osmosis type base material, and guaranteeing in the production process of blade, resin compound can penetrate into described conductive film smoothly.Electrode can be made by annealed copperwire or zinc-plated annealed copperwire.
After electrifying electrodes, conductive film is namely heatable, and Heating mechanism is the free electron generation Brownian movement under the exciting of electric energy in the base material component, produce friction and clash into heat, heat conducts by heat or the mode of radiative heat transfer passes, and to improve leaf temperature, prevents that blade from freezing.
Also need apply coating or pasting protective film due to the surface of blade exterior skin is protective layer; therefore conductive film can be clipped between which floor glass fiber cloth or be arranged in innermost layer when preparing, and not allow it be located immediately at the top layer of the reinforced layer of exterior skin or blade inlet edge, trailing edge.The outermost surface of the reinforced layer of preferred exterior skin, blade inlet edge or the reinforced layer of trailing edge is glass fiber cloth, and glass fiber cloth can be one or more layers.
In addition, can also not change the glass fiber cloth structure of exterior skin and after completing blade surface coating and applying, conductive film is attached to the blade surface position that easily freezes, one or more layers is set, can be used as the part of protective layer, can effectively carry out the deicing protection to the operation blade; When perhaps increasing conductive film in exterior skin, after completing blade surface coating and applying, conductive film is attached to the blade surface position that easily freezes, anti-freeze effect is better.
During use, with the electrifying electrodes of the conductive film in blade, in actual applications can be according to different wind field ambient conditions electric current [strength, the heat that conductive film distributes conducts to blade surface, and the blade surface temperature is raise, thereby realizes initiatively anti-icing.
The laying of conductive film of the present utility model can adopt processing device of the prior art as shown in Figure 1 to complete.Glass fibre laying 003 in Fig. 1 is comprised of some layers of glass fiber cloth, when making blade of the present utility model, only need when carrying out the laying of glass fiber cloth, conductive film 2 is laid in this glass fibre laying 003 gets final product, other manufacturing process can be carried out according to prior art.
Please in conjunction with Fig. 1 and with reference to figure 8, Fig. 8 is the flow chart of a kind of processing technology of wind wheel blade of the present utility model.
Wind wheel blade of the present utility model can adopt following technique to complete:
S11: release cloth 002 is laid on produces in the required mould 001 of wind wheel blade;
S12: lay at least one layer of glass fiber cloth and one deck conductive film at least on above-mentioned release cloth 002, the laying of glass fiber cloth and conductive film is sequentially various, its order does not affect the formation of blade, but the quantity of laying order and each laying can affect the anti-freeze effect of blade, and its concrete paving location can arrange accordingly with reference to the structure of above-mentioned blade; A kind of comparatively preferred embodiment in, conductive film can be laid between two adjacent glass fiber cloths;
S13: on above-mentioned glass fiber cloth and conductive film consist of laying basis, lay successively release cloth 002, coutroi velocity isolating film 004, be used for flow-guiding screen 005 that the homing tree lipoprotein mixture flows and the sealing film 006 of sealed mold, generally can be directly with the edge gluing, sealing of sealing film 006 with mould 001, to guarantee the sealing of mould 001;
S14: will insert in described sealing film 006 with the vacuum tube 009 that is connected with vacuum pump 010 with the injected rubber hose 008 that resin compound 007 is connected respectively;
S15: open vacuum pump 010, mould 001 is vacuumized processing, and resin compound 007 enters into glass fiber cloth and conductive film place laying (the residing position of the existing glass fibre laying 003 of Fig. 1) after permeating successively flow-guiding screen 005, isolating film 004 and release cloth 002 under the effect of negative pressure of vacuum;
S16: be cured processing, to form required wind wheel blade.
In above-mentioned steps S 12, at first the conductive film of laying can also carry out the pre-heat treatment.Through the conductive film after in advance preheating, mould that can auxiliary blade heats, and the mobility of resin compound in the time of can also improving the vacuum suction simultaneously is to guarantee the quality of vacuum suction; In addition, the electric conduction of heating film can also shorten the curing time of resin compound in advance, and then improves the manufacturing efficiency of blade.
Above wind wheel blade to wind-driven generator provided by the utility model is described in detail.Used specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (9)
1. the wind wheel blade of a wind-driven generator, described wind wheel blade has housing, it is characterized in that, described housing comprises one deck glass fiber cloth at least and the conductive film of one deck and the stacked laying of described glass fiber cloth at least, and described conductive film comprises the osmosis type base material and is arranged in electrode in described osmosis type base material.
2. wind wheel blade according to claim 1, is characterized in that, is coated with conducting medium on described osmosis type base material, and process through insulation.
3. wind wheel blade according to claim 1, is characterized in that, the outermost surface of described housing is described glass fiber cloth.
4. wind wheel blade according to claim 3, is characterized in that, the second layer of described housing ecto-entad is described conductive film.
5. according to claim 1-4 described wind wheel blades of any one, it is characterized in that, described housing comprises protective layer, exterior skin, laminboard layer and the inside panel of laying successively from outside to inside, and described exterior skin and described inside panel include the described glass fiber cloth of some layers; Each described conductive film is arranged in described protective layer, and/or is arranged between two adjacent glass fiber cloths of described exterior skin.
6. according to claim 1-4 described wind wheel blades of any one, it is characterized in that, leading edge and/or the trailing edge of described outside are coated with reinforced layer, and described reinforced layer comprises one deck glass fiber cloth at least and the conductive film of one deck and the stacked laying of described glass fiber cloth at least.
7. wind wheel blade according to claim 6, is characterized in that, the outermost surface of described reinforced layer is described glass fiber cloth.
8. wind wheel blade according to claim 7, is characterized in that, the described reinforced layer second layer from outside to inside is described conductive film.
9. wind wheel blade according to claim 6, is characterized in that, the described reinforced layer second layer from outside to inside is described conductive film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220543126XU CN202971053U (en) | 2012-10-22 | 2012-10-22 | Wind wheel blade of wind turbine generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220543126XU CN202971053U (en) | 2012-10-22 | 2012-10-22 | Wind wheel blade of wind turbine generator |
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| CN202971053U true CN202971053U (en) | 2013-06-05 |
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| CN201220543126XU Expired - Lifetime CN202971053U (en) | 2012-10-22 | 2012-10-22 | Wind wheel blade of wind turbine generator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889185A (en) * | 2012-10-22 | 2013-01-23 | 保定华翼风电叶片研究开发有限公司 | Wind turbine blade for wind driven generator and machining process thereof |
| CN106111499A (en) * | 2016-06-28 | 2016-11-16 | 北京航空航天大学 | A kind of electrical heating ice-phobic coating and preparation method thereof |
| CN109707561A (en) * | 2017-10-26 | 2019-05-03 | 吴金珠 | Anti-icing blade preparation method and wind generating set blade |
| CN109822995A (en) * | 2019-01-25 | 2019-05-31 | 惠阳航空螺旋桨有限责任公司 | A kind of insulating method of blade interior electric heating layer |
| CN110815860A (en) * | 2018-08-07 | 2020-02-21 | 吴金珠 | Anti-icing blade, preparation method thereof and wind generating set |
-
2012
- 2012-10-22 CN CN201220543126XU patent/CN202971053U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889185A (en) * | 2012-10-22 | 2013-01-23 | 保定华翼风电叶片研究开发有限公司 | Wind turbine blade for wind driven generator and machining process thereof |
| CN102889185B (en) * | 2012-10-22 | 2015-04-08 | 保定华翼风电叶片研究开发有限公司 | Wind turbine blade for wind driven generator and machining process thereof |
| CN106111499A (en) * | 2016-06-28 | 2016-11-16 | 北京航空航天大学 | A kind of electrical heating ice-phobic coating and preparation method thereof |
| CN109707561A (en) * | 2017-10-26 | 2019-05-03 | 吴金珠 | Anti-icing blade preparation method and wind generating set blade |
| CN110815860A (en) * | 2018-08-07 | 2020-02-21 | 吴金珠 | Anti-icing blade, preparation method thereof and wind generating set |
| CN110815860B (en) * | 2018-08-07 | 2022-04-12 | 吴金珠 | Anti-icing blade, preparation method thereof and wind generating set |
| CN109822995A (en) * | 2019-01-25 | 2019-05-31 | 惠阳航空螺旋桨有限责任公司 | A kind of insulating method of blade interior electric heating layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Institute of Engineering Thermophysics, Chinese Academy of Sciences Assignor: BAODING HUAYI WIND TURBINE BLADE AND DEVELOPMENT CO.,LTD. Contract record no.: 2017990000484 Denomination of utility model: Wind turbine blade for wind driven generator and machining process thereof Granted publication date: 20130605 License type: Common License Record date: 20171212 |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |