CN112477189A - Wind power generation blade core material and processing method thereof - Google Patents
Wind power generation blade core material and processing method thereof Download PDFInfo
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- CN112477189A CN112477189A CN202011312660.5A CN202011312660A CN112477189A CN 112477189 A CN112477189 A CN 112477189A CN 202011312660 A CN202011312660 A CN 202011312660A CN 112477189 A CN112477189 A CN 112477189A
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- groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/003—Cutting work characterised by the nature of the cut made; Apparatus therefor specially adapted for cutting rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/06—Grooving involving removal of material from the surface of the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
- B29L2031/082—Blades, e.g. for helicopters
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Wind Motors (AREA)
Abstract
The utility model provides a wind power generation blade core, at a plurality of shallow slots of core first surface cutting, a plurality of shallow slots of cutting on the second surface, and at a plurality of multi-angle V type structure grooves of first surface or second surface cutting, through increasing grooving quantity, and multi-angle V type structure groove makes the core adapt to the special-shaped cambered surface on the mould when placing, the difference in height, realize reducing the production of defects such as gap, fold, arch in the in-process of using, and at the in-process that fills and lead the speed soon, improve wind power generation blade's production efficiency.
Description
Technical Field
The application relates to the field of core materials, in particular to a wind power generation blade core material and a processing method thereof.
Background
The wind power generation blade is one of the important components of the generator, and when the core material of the existing wind power generation blade is laid, the repair is more, the repair time is long, the problems are more, the fitting degree is poor, the production efficiency of a client is seriously influenced, and the yield and the cost of the client are greatly increased. In the actual use process of the finished product, the fitting ratio of the wind power generation blade core material to the cambered surface is poor, and the mechanical property of the product is affected due to the fact that glue is accumulated in folds and in the pouring process easily.
Disclosure of Invention
The purpose of the application is: in order to overcome the defects of the prior art, the wind power generation blade core material and the processing method thereof are provided.
The purpose of this application is accomplished through following technical scheme, a wind power generation blade core includes:
a first surface;
a second surface;
the first surface is provided with a plurality of first deep grooves and second deep grooves which are vertical to each other and two first shallow grooves which are positioned between any two second deep grooves;
the second surface is provided with a plurality of second shallow grooves which are parallel to each other, the second shallow grooves are parallel to the first shallow grooves, and a second shallow groove is arranged between any two first shallow grooves;
the first surface or the second surface of the core material is also provided with a multi-angle V-shaped structural groove.
Preferably, the first and second electrodes are formed of a metal,
the distance between the first deep grooves is 25 mm, the distance between the second deep grooves is 50 mm, the groove width of each first deep groove and the groove width of each second deep groove are 0.8-1.2 mm, and the depth is 1-2 mm.
Preferably, the first and second electrodes are formed of a metal,
the spacing of the first shallow grooves is 25 mm, the spacing of the second shallow grooves is 25 mm, the widths of the first shallow grooves and the second shallow grooves are 2 mm, and the groove depths are 2 mm.
Preferably, the first and second electrodes are formed of a metal,
the horizontal distance between any one of the first shallow grooves and any one of the second shallow grooves is 5.5-6.5 mm.
Preferably, the first and second electrodes are formed of a metal,
the angle of the multi-angle V-shaped structure groove is 1 degree, 6-18 degrees, the width is 0.1-6mm, and the depth is 1-1.5 mm of groove depth and bottom.
Preferably, the first and second electrodes are formed of a metal,
the multi-angle V-shaped structure groove is a first surface multi-angle V-shaped structure groove arranged on the first surface.
Preferably, the first and second electrodes are formed of a metal,
the multi-angle V-shaped structure groove is a second surface multi-angle V-shaped structure groove arranged on the second surface.
Preferably, the first and second electrodes are formed of a metal,
the depth of the first deep groove and the depth of the second shallow groove are intersected by 1-2 mm to enable the first deep groove and the second shallow groove to be communicated, and the depth of the first-surface multi-angle V-shaped structural groove and the depth of the second shallow groove are intersected by 1-1.5 mm to enable the first-surface multi-angle V-shaped structural groove and the second shallow groove to be communicated.
Preferably, the first and second electrodes are formed of a metal,
the depth of the multi-angle V-shaped structural groove on the second surface is intersected with that of the first shallow groove by 1-1.5 mm, so that the groove and the first shallow groove are communicated.
Preferably, the first and second electrodes are formed of a metal,
the wind power generation blade core material needing to be greatly transited is transited at one time at the speed of 1.4-1.8m/min by adopting high-speed automatic plane cutting equipment, and the wind power generation blade core material is horizontally cut into a flat plate with the thickness of 9.5-44.5mm, so that the transition plane is smooth and free of waves.
A processing method of a wind power generation blade core material comprises the following steps:
cutting a plurality of first deep grooves and second deep grooves which are perpendicular to each other and two first shallow grooves which are positioned between any two second deep grooves on the first surface of the wind power generation blade core material, wherein the distance between every two first deep grooves is 25 mm, the distance between every two second deep grooves is 50 mm, the groove width of each first deep groove and the groove width of each second deep groove are 0.8-1.2 mm, and the depth of each first deep groove and each second deep groove is 1-2 mm;
cutting a plurality of second shallow grooves which are parallel to each other on a second surface of the wind power generation blade core material, wherein the second shallow grooves are parallel to the first shallow grooves, a second shallow groove is arranged between any two first shallow grooves, the spacing of the first shallow grooves is 25 mm, the spacing of the second shallow grooves is 25 mm, the widths of the first shallow grooves and the second shallow grooves are 2 mm, the groove depths are 2 mm, and the horizontal spacing between the first shallow grooves and any one second shallow groove is 5.5-6.5 mm;
the depth of the first deep groove and the depth of the second shallow groove are intersected by 1-2 mm, so that the first deep groove and the second shallow groove are communicated;
and cutting a first-surface multi-angle V-shaped structural groove on the first surface of the wind power generation blade core material, wherein the depth of the first-surface multi-angle V-shaped structural groove is intersected with that of the second shallow groove for 1-1.5 mm, so that the first-surface multi-angle V-shaped structural groove and the second shallow groove are communicated.
Compared with the prior art, the application has the following obvious advantages and effects:
1. the method comprises the steps of cutting a plurality of shallow grooves on the first surface and a plurality of shallow grooves on the second surface, and cutting a plurality of multi-angle V-shaped structural grooves on the first surface or the second surface, so that the filling speed of the core material is improved and the adhesive accumulation is reduced by increasing the number of the cutting grooves.
2. A plurality of multi-angle V-shaped structure grooves are cut on the first surface or the second surface, the multi-angle V-shaped structure grooves enable the core material to adapt to a special-shaped arc surface and a height difference on a die when the core material is placed, the defects of gaps, wrinkles, bulges and the like in the actual use process are reduced, the flow guiding speed is accelerated in the pouring process, and the production efficiency of the wind power blade is improved.
Drawings
Fig. 1 is a side and first surface structure view of a wind turbine blade core material according to the present application.
Fig. 2 is a first surface structure view of a wind turbine blade core material according to the present invention.
Fig. 3 is a first surface structure view of a wind turbine blade core material according to the present invention.
Fig. 4 is a second surface structure view of the wind turbine blade core material according to the present application.
Detailed Description
Specific embodiments thereof are described below in conjunction with the following description and the accompanying drawings to teach those skilled in the art how to make and use the best mode of the present application. For the purpose of teaching application principles, the following conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations from these embodiments that fall within the scope of the application. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the present application. In the present application, the terms "upper", "lower", "left", "right", "middle" and "one" are used for clarity of description, and are not used to limit the scope of the application, and the relative relationship between the terms and the terms is not limited to the technical content of the substantial change. Thus, the present application is not limited to the specific embodiments described below, but only by the claims and their equivalents.
Fig. 1 to 4 show a specific embodiment of a wind power blade core according to the present application.
A wind power blade core, comprising:
a first surface 1;
a second surface 2;
the first surface 1 is provided with a plurality of first deep grooves 11 and second deep grooves 12 which are vertical to each other, and two first shallow grooves 13 which are positioned between any two second deep grooves 12;
the second surface 2 is provided with a plurality of second shallow grooves 21 which are parallel to each other, the second shallow grooves 21 are parallel to the first shallow grooves 13, and one second shallow groove 21 is arranged between any two first shallow grooves 13;
the first surface or the second surface of the core material is also provided with a multi-angle V-shaped structural groove 3.
The method comprises the steps of cutting a plurality of shallow grooves on a first surface and a plurality of shallow grooves on a second surface, cutting a plurality of multi-angle V-shaped structural grooves on the first surface or the second surface, enabling the core material to adapt to a special-shaped arc surface and a height difference on a mould when the core material is placed by increasing the number of the cutting grooves and the V-shaped structural grooves, achieving the purpose of reducing the defects of gaps, folds, bulges and the like in the actual use process, accelerating the flow guiding speed in the pouring process and improving the production efficiency of the wind power generation blade.
It should be noted that, as shown in fig. 1 to 3, in the embodiment of the present application,
the distance between the first deep grooves 11 is 25 mm, the distance between the second deep grooves 12 is 50 mm, the groove width of each of the first deep grooves 11 and the second deep grooves 12 is 0.8-1.2 mm, and the depth is 1-2 mm. The first deep grooves 11 and the second deep grooves 12 are crossed, the diversion speed can be increased in the pouring process, the production efficiency of the wind power blade is improved, and the distance between the second deep grooves 12 is 50 mm, so that a space is reserved for shallow groove cutting of the first surface.
It should be noted that, as shown in fig. 1, in the embodiment of the present application,
the space between the first shallow grooves 13 is 25 mm, the space between the second shallow grooves 21 is 25 mm, the groove widths of the first shallow grooves 13 and the second shallow grooves 21 are 2 mm, the groove depths are 2 mm, and the groove depth of the second shallow grooves 21 is 2 mm, so that the first deep grooves 11 and the second shallow grooves 21 are communicated in a crossed mode for 1-2 mm, the pouring and flow guiding speed is increased on the premise of avoiding punching, and the production efficiency of the wind power generation blade is improved.
It should be noted that, as shown in fig. 1, in the embodiment of the present application,
the horizontal distance between any one of the first shallow grooves 13 and any one of the second shallow grooves 21 is 5.5-6.5 mm, and the cutting grooves are uniformly formed to ensure uniform flow guide of the core material in the pouring process, so that the quality of the core material is improved.
It should be noted that, as shown in fig. 1, in the embodiment of the present application,
the multi-angle V-shaped structural groove has the 3-degree angle of 1 degree and 6-18 degrees, the width of 0.1-6mm and the depth of 1-1.5 mm, so that the wind power generation blade core material is adaptive to a special-shaped cambered surface on a die, the defects of gaps, folds, bulges and the like in the actual use process are reduced, and the production efficiency of the wind power generation blade is improved.
It should be noted that, as shown in fig. 1, in the embodiment of the present application,
the multi-angle V-shaped structure groove 3 is a first surface multi-angle V-shaped structure groove 14 arranged on the first surface 1, the first surface multi-angle V-shaped structure groove 14 is additionally arranged on the first surface 1, the flow guiding speed can be accelerated in the filling process, meanwhile, the wind power generation blade core material is made to adapt to a special-shaped arc surface on a die, the generation of defects such as gaps, wrinkles and protrusions in the actual use process is reduced, and the production efficiency of the wind power generation blade is improved.
It should be noted that, as shown in fig. 4, in the embodiment of the present application,
the multi-angle V-shaped structure groove 3 is formed by adding the first-surface multi-angle V-shaped structure groove 22 on the second surface 2 for the second-surface multi-angle V-shaped structure groove 22 on the second surface 2, so that the flow guiding speed can be increased in the pouring process, the wind power generation blade core material is adapted to a special-shaped arc surface on a die, the defects of gaps, wrinkles, protrusions and the like in the actual use process are reduced, and the production efficiency of the wind power generation blade is improved.
It should be noted that, as shown in fig. 1, in the embodiment of the present application,
the depth of the first deep groove 11 is intersected with the depth of the second shallow groove 21 by 1-2 mm, the depth of the first surface multi-angle V-shaped structural groove 14 is intersected with the depth of the second shallow groove 21 by 1-1.5 mm, the first surface multi-angle V-shaped structural groove and the second shallow groove are communicated, perforation is avoided through the intersecting communication, the flow guiding speed can be increased in the pouring process, and the production efficiency of the wind power blade is improved.
It should be noted that, as shown in fig. 4, in the embodiment of the present application,
the depth of the multi-angle V-shaped structure grooves 22 on the second surface is intersected with that of the first shallow grooves 13 by 1-1.5 mm, so that the grooves and the first shallow grooves are communicated, perforation is avoided due to the cross communication, the flow guiding speed can be increased in the filling process, and the production efficiency of the wind power blade is improved.
It should be noted that, as shown in fig. 1, in the embodiment of the present application,
a processing method of a wind power generation blade core material comprises the following steps:
cutting a plurality of first deep grooves 11 and second deep grooves 12 which are perpendicular to each other and two first shallow grooves 13 which are positioned between any two second deep grooves 12 on a first surface 1 of a wind power generation blade core material, wherein the distance between the first deep grooves 11 is 25 mm, the distance between the second deep grooves 12 is 50 mm, the groove widths of the first deep grooves 11 and the second deep grooves 12 are 0.8-1.2 mm, and the depth is 1-2 mm;
cutting a plurality of second shallow grooves 21 which are parallel to each other on a second surface 2 of the wind power generation blade core material, wherein the second shallow grooves 21 are parallel to the first shallow grooves 13, a second shallow groove 21 is arranged between any two first shallow grooves 13, the distance between the first shallow grooves 13 is 25 mm, the distance between the second shallow grooves 21 is 25 mm, the widths of the first shallow grooves 13 and the second shallow grooves 21 are 2 mm, the groove depths are 2 mm, and the horizontal distance between the first shallow grooves 13 and any one second shallow groove 21 is 5.5-6.5 mm;
the depth of the first deep groove 11 and the depth of the second shallow groove 21 are intersected by 1-2 mm, so that the first deep groove and the second shallow groove are communicated;
and cutting a first-surface multi-angle V-shaped structure groove 14 on the first surface 1 of the wind power generation blade core material, wherein the depth of the first-surface multi-angle V-shaped structure groove 14 is intersected with the depth of the second shallow groove 21 for 1-1.5 mm, so that the first-surface multi-angle V-shaped structure groove 14 and the second shallow groove are communicated.
In the embodiment, high-speed automatic plane cutting equipment is adopted, the wind power generation blade core material needing to be greatly transited is transited at one time at the speed of 1.4-1.8m/min, the wind power generation blade core material is horizontally cut into a flat plate with the thickness of 9.5-44.5mm, the transition plane is smooth and waveless, the phenomena of glue accumulation, layering, whitening and poor impregnation after pouring caused by large height difference and more gaps between adjacent plates are reduced, the subsequent repair amount is large, and the glass fibers are folded when being laid, so that the mould surface is prone to generate gaps, and the phenomena of layering, whitening, poor impregnation, bubbles and implosion after pouring are caused.
In summary, the present application has the following technical effects:
the technology optimization is carried out through the existing equipment, the core material plate adopts a composite cutter array dislocation groove structure technology (upper surface groove dislocation and lower surface groove dislocation) of a 0 degree +90 degree staggered cutter cutting deep groove and double-surface longitudinal groove matching, and the purpose of the through hole is achieved by increasing the matching of the longitudinal groove depth and the staggered cutter cutting deep groove, so that the step of machining the through hole is omitted, the productivity between units is improved, and the process circulation is accelerated. The matching mode of the composite cutter array dislocation groove, the multi-angle V-shaped structure groove and the large-amplitude one-time smooth transition adapts to the special-shaped arc surface and the height difference on the die, reduces the generation of defects such as gaps, folds, bulges and the like in the actual use process, accelerates the flow guiding speed in the pouring process, and improves the production efficiency of the wind power blade.
Since any modifications, equivalents, improvements, etc. made within the spirit and principles of the application may readily occur to those skilled in the art, it is intended to be included within the scope of the claims of this application.
Claims (10)
1. A wind power blade core, comprising:
a first surface (1);
a second surface (2);
the first surface (1) is provided with a plurality of first deep grooves (11) and second deep grooves (12) which are vertical to each other and two first shallow grooves (13) which are positioned between any two second deep grooves (12);
the second surface (2) is provided with a plurality of second shallow grooves (21) which are parallel to each other, the second shallow grooves (21) are parallel to the first shallow grooves (13), and one second shallow groove (21) is arranged between any two first shallow grooves (13);
the first surface (1) or the second surface (2) of the core material is also provided with a multi-angle V-shaped structural groove (3).
2. The wind power blade core of claim 1, wherein: the distance between the first deep grooves (11) is 25 mm, the distance between the second deep grooves (12) is 50 mm, the groove width of each first deep groove (11) and the groove width of each second deep groove (12) are 0.8-1.2 mm, and the depth is 1-2 mm.
3. The wind power blade core of claim 1, wherein: the spacing of the first shallow grooves (13) is 25 mm, the spacing of the second shallow grooves (21) is 25 mm, the groove width of the first shallow grooves (13) and the groove width of the second shallow grooves (21) are 2 mm, and the groove depth is 2 mm.
4. The wind power blade core of claim 1, wherein: the horizontal distance between any one first shallow groove (13) and any one second shallow groove (21) is 5.5-6.5 mm.
5. The wind power blade core of claim 1, wherein: the angle of the multi-angle V-shaped structural groove (3) is 1 degree, 6-18 degrees, the width is 0.1-6mm, and the depth is 1-1.5 mm of the groove depth.
6. The wind power blade core of claim 5, wherein: the multi-angle V-shaped structure groove (3) is a first surface multi-angle V-shaped structure groove (14) arranged on the first surface (1).
7. The wind power blade core of claim 5, wherein: the multi-angle V-shaped structure groove (3) is a second surface multi-angle V-shaped structure groove (22) arranged on the second surface (2).
8. The wind power blade core of claim 6, wherein: the first deep groove (11) and the second shallow groove (21) are intersected by 1-2 mm in depth to enable the first deep groove and the second shallow groove to be communicated, and the first-surface multi-angle V-shaped structure groove (14) and the second shallow groove (21) are intersected by 1-1.5 mm in depth to enable the first-surface multi-angle V-shaped structure groove and the second shallow groove to be communicated.
9. The wind power blade core of claim 7, wherein: the depth of the second-surface multi-angle V-shaped structural groove (22) is intersected with that of the first shallow groove (13) by 1-1.5 mm, so that the second-surface multi-angle V-shaped structural groove and the first shallow groove are communicated.
10. A method of manufacturing a wind turbine blade core according to claim 1, wherein: the method comprises the following steps:
cutting a plurality of first deep grooves (11) and second deep grooves (12) which are perpendicular to each other and two first shallow grooves (13) which are positioned between any two second deep grooves (12) on a first surface (1) of a wind power generation blade core material, wherein the distance between the first deep grooves (11) is 25 mm, the distance between the second deep grooves (12) is 50 mm, the groove widths of the first deep grooves (11) and the second deep grooves (12) are 0.8-1.2 mm, and the depth is 1-2 mm;
cutting a plurality of second shallow grooves (21) which are parallel to each other on a second surface (2) of the wind power generation blade core material, wherein the second shallow grooves (21) are parallel to the first shallow grooves (13), a second shallow groove (21) is arranged between any two first shallow grooves (13), the distance between the first shallow grooves (13) is 25 mm, the distance between the second shallow grooves (21) is 25 mm, the groove widths of the first shallow grooves (13) and the second shallow grooves (21) are both 2 mm, the groove depths are both 2 mm, and the horizontal distance between the first shallow grooves (13) and any one second shallow groove (21) is 5.5-6.5 mm;
the first deep groove (11) and the second shallow groove (21) are intersected in depth by 1-2 mm, so that the first deep groove and the second shallow groove are communicated;
and cutting a first-surface multi-angle V-shaped structural groove (14) on the first surface (1) of the wind power generation blade core material, wherein the depth of the first-surface multi-angle V-shaped structural groove (14) is intersected with that of the second shallow groove (21) for 1-1.5 mm, so that the first-surface multi-angle V-shaped structural groove and the second shallow groove are communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312660.5A CN112477189A (en) | 2020-11-20 | 2020-11-20 | Wind power generation blade core material and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011312660.5A CN112477189A (en) | 2020-11-20 | 2020-11-20 | Wind power generation blade core material and processing method thereof |
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| Publication Number | Publication Date |
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| CN112477189A true CN112477189A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011312660.5A Pending CN112477189A (en) | 2020-11-20 | 2020-11-20 | Wind power generation blade core material and processing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113306185A (en) * | 2021-05-27 | 2021-08-27 | 曼纳索(南通)复合材料有限公司 | Preparation method of PVC foam core material for wind driven generator blade |
| WO2023179485A1 (en) * | 2022-03-22 | 2023-09-28 | 远景能源有限公司 | Core material structure and wind turbine blade |
-
2020
- 2020-11-20 CN CN202011312660.5A patent/CN112477189A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113306185A (en) * | 2021-05-27 | 2021-08-27 | 曼纳索(南通)复合材料有限公司 | Preparation method of PVC foam core material for wind driven generator blade |
| WO2023179485A1 (en) * | 2022-03-22 | 2023-09-28 | 远景能源有限公司 | Core material structure and wind turbine blade |
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