CN214330792U - Modularized wind generating set blade - Google Patents
Modularized wind generating set blade Download PDFInfo
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- CN214330792U CN214330792U CN202023271792.6U CN202023271792U CN214330792U CN 214330792 U CN214330792 U CN 214330792U CN 202023271792 U CN202023271792 U CN 202023271792U CN 214330792 U CN214330792 U CN 214330792U
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- blade
- pneumatic
- skin
- bearing
- wind turbine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- 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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Abstract
The utility model discloses a modularized wind generating set blade, belonging to the technical field of wind generating set blade design and manufacture, comprising a bearing part and a pneumatic part; the bearing part comprises a blade main beam and a blade root switching structure; two ends of the blade root switching structure are respectively connected with the blade bearing and the blade main beam through fasteners; the pneumatic part is connected with the bearing part through a fastener, the pneumatic part comprises a skin supporting structure and a skin, and the skin supporting structure comprises a rib plate and a purline; the covering comprises a plurality of covering sheets, and each covering sheet is fixedly connected or bonded with the purline through a fastener to form the pneumatic curved surface of the blade. The utility model discloses technical scheme's beneficial effect lies in: the pneumatic part and the bearing part are respectively and independently manufactured, the structural shape of the bearing part can be suitable for blades of different blade models, and the universality is better; the pneumatic part adopts the skin piece of piecemeal concatenation, carries out local maintenance after the blade damage of being convenient for, has reduced the maintenance cost, and the cost of manufacture of blade mould is lower.
Description
Technical Field
The utility model relates to a aerogenerator blade manufacturing and designing technical field especially relates to a modular wind generating set blade.
Background
The blade of the wind driven generator is one of the key components of the wind driven generator, and the design of the blade directly influences the conversion efficiency and reliability of the blade and influences the annual energy production of the blade. The structural design of the blade mainly comprises a pneumatic part and a bearing part, the cross section of the blade is of a hollow wing-shaped structure, an integrally formed pneumatic shell and a bearing main beam are generally adopted, the pneumatic shell is of a sandwich structure made of hard foam surface plastic, skins on two sides are made of multi-axis glass fiber reinforced composite materials, the skins are thin in structure, light wood and foam materials are generally adopted for filling between the skins, and the skins and the filling materials are integrally poured and formed; the bearing structure comprises a beam cap made of unidirectional glass fiber reinforced composite material and a web plate, wherein the web plate adopts a hard foam plastic sandwich structure, the maximum thickness part of the beam cap is connected through the web plate to form a box-shaped girder or an I-shaped girder, and the beam cap can be integrally formed with the shell or can be prefabricated and then bonded with the shell for forming; the blade root adopts multiaxis glass fiber reinforced composite to make annular structure, has laid connecting bolt on the ring, is convenient for be connected with the bearing, and blade root annular structure and hollow airfoil structure pass through B spline fusion transition near the blade root.
At present, in the prior art, a manufacturing process of split-die pouring molding and die assembly gluing is generally adopted, a blade is divided into two pieces along the maximum outer edge of the front edge and the rear edge of the blade, blade molds (including male molds, female molds and web molds) are respectively manufactured, bearing structures such as a beam cap, a front edge beam, a rear edge beam, a blade root ring and the like are respectively manufactured on the blade molds, then a prefabricated bearing structure and a pneumatic structure are integrally poured and molded, and a prefabricated blade web and the two pieces of the blade are glued into a whole. The manufacturing process has the advantages that the workload of material laying is increased sharply along with the lengthening of the blades, the production efficiency is reduced, and the manufacturing period is long; the glass fiber reinforced composite material is difficult to manufacture and increases quality risk due to the increase of thickness and area; the blade web and the blade shell are directly fixed through bonding, the risk of bonding failure exists in the operation process, the bonding quality is difficult to control and detect, and the overall safety of the wind driven generator can be endangered in serious cases; the blade mould of different models's commonality is relatively poor, has increased the cost of manufacture of blade mould, consequently to above problem, urgent need design one kind can improve blade structure commonality, reduce aerogenerator blade manufacturing and operation and maintenance cost's aerogenerator blade to satisfy the needs of in-service use.
Disclosure of Invention
To solve the above problems in the prior art, a modularized wind turbine generator system blade is provided, and the specific technical scheme is as follows:
a modularized wind generating set blade comprises a bearing part and a pneumatic part;
the bearing part includes:
the blade girder comprises a beam cap and a web plate, and the beam cap and the web plate are enclosed into a box body structure extending from a blade root to a blade tip;
one end of the blade root switching structure is connected with a blade bearing through a fastener, one end of the blade root switching structure, which is close to the blade bearing, is annular, and the other end of the blade root switching structure passes through the fastener and the blade main beam;
the pneumatic portion is connected with the bearing portion through a fastener, and the pneumatic portion comprises:
the skin supporting structure comprises a plurality of rib plates connected with the blade main beam and a plurality of purlins, the purlins are respectively installed on the rib plates, and the installation direction of the purlins is consistent with that of the blade main beam;
and the skin comprises a plurality of skin sheets, and each skin sheet is fixedly connected or bonded with the purline through a fastener to form the pneumatic curved surface of the blade.
Preferably, an included angle between the rib plate and the blade main beam is smaller than or equal to 90 degrees.
Preferably, the section of the blade girder is square, polygonal, circular or elliptical, and along the extension direction from the blade root to the blade tip, the cross-sectional area and the wall thickness of the blade girder are the same or gradually reduced.
Preferably, a sealing material is filled between each skin sheet.
Preferably, each skin sheet is made of a hard or flexible material.
Preferably, the spar cap is made of a unidirectional fiber composite material; and
the web is made of a multidirectional fiber composite material and a foam sandwich material.
Preferably, the blade root adapter structure is made of triaxial fiber resin reinforced plastic.
Preferably, the rib plates are arranged in a staggered mode at intervals and extend out of two sides of the blade main beam.
Preferably, pneumatic accessories are respectively installed on the rib plates, the skin and the purlins, and each pneumatic accessory comprises a vortex generator and/or a noise reduction sawtooth.
Preferably, the blade is provided with a lightning protection part.
The utility model discloses technical scheme's beneficial effect lies in:
the utility model provides a modularized wind generating set blade, the pneumatic part and the bearing part are respectively and independently manufactured, the structural shape of the bearing part can be suitable for blades with different blade models, and the universality is better; on the basis of the same blade bearing part, the pneumatic part adopts the skin sheets spliced in blocks, so that the blade is convenient to maintain locally after being damaged, the maintenance efficiency of the blade is greatly improved, the maintenance cost is reduced, and the manufacturing cost of a blade mould is lower; meanwhile, different pneumatic skin structures are rapidly developed, the development period and cost of the blade can be effectively shortened, and the manufacturing production efficiency of the blade is improved.
Drawings
Fig. 1 is a schematic structural view of a modular wind turbine blade according to the present invention;
fig. 2 is a schematic structural view of a specific embodiment of the carrying part in the present invention;
fig. 3 is a schematic structural diagram of an embodiment of the pneumatic section of the present invention;
fig. 4 is a schematic structural diagram of an embodiment of the skin support structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
The utility model provides a modularized wind generating set blade, belonging to the technical field of wind generating set blade design and manufacture, as shown in figures 1-4, comprising a separated bearing part and a pneumatic part;
the bearing part includes:
the blade girder 11 comprises a beam cap 111 and a web plate 112, and the beam cap 111 and the web plate 112 enclose a box structure extending from a blade root to a blade tip;
one end of the blade root switching structure 12 is connected with a blade bearing through a fastener, one end of the blade root switching structure 12, which is close to the blade bearing, is annular, and the other end of the blade root switching structure 12 is connected with the blade main beam 11 through a fastener;
pneumatic portion passes through the fastener and connects bearing part, and pneumatic portion includes:
a skin support structure 21, the skin support structure 21 includes a plurality of rib plates 211 connected to the blade girders 11, and a plurality of purlins 212, the plurality of purlins 212 are respectively mounted on the plurality of rib plates 211,
the mounting direction of the purlines 212 is consistent with the direction of the blade main beams 11;
and the skin 22 comprises a plurality of skin sheets 221, and each skin sheet 221 is fixedly connected or bonded with the purline 212 through a fastener to form the aerodynamic curved surface of the blade.
Specifically, the technical scheme abandons the manufacturing process of integral injection molding of the bearing part and the pneumatic part in the prior art, the blade of the wind generating set is divided into modular components, the pneumatic part and the bearing part are separated and are respectively and independently manufactured, the bearing part comprises a blade girder 11 and a blade root switching structure 12, the joint of the blade girder 11 and the blade root switching structure 12 is in butt joint or riveting through bolts, wherein the blade girder 11 comprises a girder cap 111 and a web 112, the girder cap 111 and the web 112 are spliced into a box body structure along the length direction of the blade, the box body structure extends from the blade root to the blade tip, the cross section is square, polygonal, circular or elliptical, and the two end parts of the box body structure are communicated and are in an open structure; the blade root switching structure 12 is connected between the blade bearing and the blade main beam 11, one end of the blade root switching structure 12 is in a ring shape and is connected with the blade bearing through fasteners such as bolts, and the shape of the joint of the other end is consistent with that of the blade main beam 11. The blade root switching structure 12 is connected with the blade bearing through a bolt;
the pneumatic part is connected with the bearing part through a fastener, the pneumatic part comprises a skin supporting structure 21 and a skin, the skin is formed by combining a plurality of segmented skin sheets 221 or is formed by adopting an integrally formed skin, the skin supporting structure 21 comprises rib plates 211 and purlines 212, the rib plates 211 comprise frame structures which respectively extend from two sides of the blade girder 11 to the front edge side of the airfoil, the rear edge side of the airfoil and two sides of the airfoil, the frame structures are respectively fixed around four sides of the blade girder 11 to form an integral sheet-shaped rib plate 211, the rib plates 211 are vertical or approximately vertical to the blade girder 11, the purlines 212 are respectively arranged on the rib plates 211 along the direction of the blade girder 11, the direction of the purlines 212 is consistent or approximately consistent with the extending direction of the blade girder 11, so that a fixed curved surface of the skin is formed, and then the skin is connected with the periphery of the fixed curved surface of the skin through bolts, rivets and the like, Fasteners such as clamping devices are fixed on the purlins 212 or are adhered to the purlins 212 by structural adhesive to form the aerodynamic appearance of the blade in the blade root area, and in the operation process of the blade, the load on the skin sequentially passes through the purlins 212, the rib plates 211, the blade main beams 11 and the blade root switching structures 12 and is finally transmitted to the blade bearing.
In the above preferred embodiment, the cross-sectional shape of the bearing portion is square, polygonal, circular or elliptical, and along the length direction of the blade, the cross-section of the bearing portion may be a uniform cross-section or a variable cross-section, so that the blade bearing device can be applied to blades of different blade types, and has better universality.
In a preferred embodiment, the included angle between the rib plate 211 and the blade girder 11 is less than or equal to 90 degrees, and the rib plate 211 and the blade girder 11 are vertical or approximately vertical.
In a preferred embodiment, the cross section of the blade girder 11 is square, polygonal, circular or elliptical, and along the extension direction of the blade girder 11, the cross section of the blade girder 11 is a uniform cross section or a variable cross section, the cross section area of the blade girder 11 is the same or gradually decreases from the blade root to the blade tip, and the wall thickness of the blade girder 11 is the same as the cross section area and is the same or gradually decreases from the blade root to the blade tip.
In a preferred embodiment, a sealing material is filled between the skin sheets 221 and 221.
In a preferred embodiment, each skin piece 221 is made of a rigid or flexible material.
In a preferred embodiment, spar cap 111 is made from a unidirectional fiber composite; and
the web 112 is made of a multi-directional fiber composite and a foam sandwich material.
In a preferred embodiment, the root adapter 12 is made of triaxial fiber-reinforced plastic.
In a preferred embodiment, the plurality of ribs 211 are spaced and staggered and extend to both sides of the blade spar 11.
In a preferred embodiment, the ribs 211, skin, and purlins 212 each have pneumatic attachments (not shown) including vortex generators and/or noise reducing serrations mounted thereon.
In a preferred embodiment, the blade is provided with lightning conductors (not shown).
The utility model discloses technical scheme's beneficial effect lies in:
the utility model provides a modularized wind generating set blade, the pneumatic part and the bearing part are respectively and independently manufactured, the structural shape of the bearing part can be suitable for blades with different blade models, and the universality is better; on the basis of the same blade bearing part, the pneumatic part adopts the skin sheets spliced in blocks, so that the blade is convenient to maintain locally after being damaged, the maintenance efficiency of the blade is greatly improved, the maintenance cost is reduced, and the manufacturing cost of a blade mould is lower; meanwhile, different pneumatic skin structures are rapidly developed, the development period and cost of the blade can be effectively shortened, and the manufacturing production efficiency of the blade is improved.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (10)
1. A modularized wind generating set blade is characterized by comprising a bearing part and a pneumatic part;
the bearing part includes:
the blade girder comprises a beam cap and a web plate, and the beam cap and the web plate are enclosed into a box body structure extending from a blade root to a blade tip;
one end of the blade root switching structure is connected with a blade bearing through a fastener, one end of the blade root switching structure, which is close to the blade bearing, is annular, and the other end of the blade root switching structure passes through the fastener and the blade main beam;
the pneumatic portion is connected with the bearing portion through a fastener, and the pneumatic portion comprises:
the skin supporting structure comprises a plurality of rib plates connected with the blade main beam and a plurality of purlins, the purlins are respectively installed on the rib plates, and the installation direction of the purlins is consistent with that of the blade main beam;
and the skin comprises a plurality of skin sheets, and each skin sheet is fixedly connected or bonded with the purline through a fastener to form the pneumatic curved surface of the blade.
2. The modular wind turbine blade of claim 1, wherein an angle between the rib plate and the blade main beam is less than or equal to 90 degrees.
3. The modular wind turbine blade according to claim 1, wherein the blade spar has a cross section that is square, polygonal, circular or elliptical and has a cross-sectional area that is the same as or gradually decreases in wall thickness along the extension of the blade root towards the blade tip.
4. The modular wind turbine blade of claim 1, wherein a sealing material is filled between each of the skin sheets.
5. The modular wind turbine blade of claim 1, wherein each skin sheet is made of a rigid or flexible material.
6. The modular wind turbine blade of claim 1, wherein the spar cap is made of a unidirectional fiber composite; and
the web is made of a multidirectional fiber composite material and a foam sandwich material.
7. The modular wind turbine blade of claim 1, wherein the blade root adapter is made of triaxial fiber-reinforced plastic.
8. The modular wind turbine blade of claim 1, wherein a plurality of the ribs are staggered and extend to both sides of the blade main beam.
9. The modular wind turbine blade of claim 1, wherein the rib, the skin and the purlins are each provided with a pneumatic attachment, the pneumatic attachment comprising a vortex generator and/or noise reducing serrations.
10. A modular wind turbine blade according to claim 1, characterised in that a lightning conductor is provided on the blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023271792.6U CN214330792U (en) | 2020-12-29 | 2020-12-29 | Modularized wind generating set blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023271792.6U CN214330792U (en) | 2020-12-29 | 2020-12-29 | Modularized wind generating set blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214330792U true CN214330792U (en) | 2021-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023271792.6U Active CN214330792U (en) | 2020-12-29 | 2020-12-29 | Modularized wind generating set blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214330792U (en) |
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2020
- 2020-12-29 CN CN202023271792.6U patent/CN214330792U/en active Active
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