CN114320782A - Wind power blade, manufacturing method thereof and wind driven generator - Google Patents
Wind power blade, manufacturing method thereof and wind driven generator Download PDFInfo
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- CN114320782A CN114320782A CN202210006638.0A CN202210006638A CN114320782A CN 114320782 A CN114320782 A CN 114320782A CN 202210006638 A CN202210006638 A CN 202210006638A CN 114320782 A CN114320782 A CN 114320782A
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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 invention discloses a wind power blade, a manufacturing method thereof and a wind driven generator, wherein the wind power blade comprises a blade root part, a first connecting hole is formed in the end surface of one end, connected with a hub of the wind driven generator, of the blade root part, the first connecting hole is distributed along the circumferential direction of the blade root part, a cylindrical hole communicated with the first connecting hole is formed in the outer circumferential surface of the blade root part, a cylindrical part is arranged in the cylindrical hole, the first connecting hole is used for installing a first connecting piece, one end of the first connecting piece is connected with the cylindrical part, the other end of the first connecting piece is connected with the hub, a protruding part is arranged on the side wall of the blade root part, a second connecting hole communicated with the cylindrical hole is formed in the end surface, facing one end of the hub, of the protruding part, and the second connecting hole is used for installing a second connecting piece. The convex part provided with the second connecting hole can increase the number of connecting pieces between the wind power blade and the hub, improve the bearing capacity of the blade root part and further increase the use safety of the wind power blade.
Description
Technical Field
The invention relates to a wind power blade, a manufacturing method thereof and a wind driven generator.
Background
The current blade root bolt adopts the single row bolt design, sets up the single row bolt hole along the circumferencial direction distribution in the tip of blade root promptly. The design length of the wind power blade is longer and longer, the blade root load is also larger and larger, and the limit load and the fatigue damage of the blade root bolt are increased. Therefore, in the use process of the wind driven generator, the bolts are easy to deform, break and the like, and the safety of the wind driven generator is further influenced.
Disclosure of Invention
The invention provides a wind power blade, a manufacturing method thereof and a wind power generator, aiming at overcoming the defect that the safety of the wind power generator is affected because the bolt for connecting the wind power blade and a hub is easy to deform, break and the like due to overlarge load in the use process of the wind power generator.
The invention solves the technical problems through the following technical scheme:
the invention provides a wind power blade, which comprises a blade root part, wherein a first connecting hole is formed in the end surface of one end of the blade root part, which is connected with a hub of a wind driven generator, and is distributed along the circumferential direction of the blade root part, a cylindrical hole communicated with the first connecting hole is formed in the outer circumferential surface of the blade root part, a cylindrical part matched with the cylindrical hole is arranged in the cylindrical hole, the first connecting hole is used for installing a first connecting piece, one end of the first connecting piece is connected with the cylindrical part, the other end of the first connecting piece is connected with the hub, a bulge part is formed in the side wall of the blade root part, a second connecting hole communicated with the cylindrical hole is formed in the end surface of the bulge part, which faces one end of the hub, the second connecting hole is used for installing a second connecting piece, and one end of the second connecting piece is connected with the cylindrical part, the other end of the second connecting piece is connected with the hub.
In the scheme, by adopting the structure, on the first hand, the number of the connecting pieces between the wind power blade and the hub is increased, the load of a single connecting piece in the blade root is reduced, when the blade root is connected with the hub through the bolt, the load of a single bolt in the blade root can be reduced, the bearing capacity of the blade root is improved, the situations that the bolt is deformed and broken due to overlarge load are avoided, and the use safety of the wind power blade is improved; in the second aspect, the bulge and the second connecting piece are only added locally, and compared with the method that a row of second connecting pieces are added in the whole ring design of the inner side wall or the outer side wall of the blade root, the weight of the blade root and the weight of a machine head of the whole machine can be effectively reduced, and the load of the whole machine is reduced; and in the third aspect, the number of blade root connecting pieces is increased, and when the blade root is connected with the hub through the bolt, the diameter of the pitch circle of the blade root can be reduced under the condition that the bearing capacity of the bolt is certain, so that the sizes of the hub and the bearing connected with the blade root are reduced, and the production cost of the whole machine is reduced.
Preferably, the column-shaped member comprises a first column-shaped member and a second column-shaped member, and a first threaded hole matched with the first connecting piece is formed in the side wall of the first column-shaped member;
and a second threaded hole matched with the first connecting piece and a third threaded hole matched with the second connecting piece are formed in the side wall of the second cylindrical piece.
In this scheme, adopt above-mentioned structural style, through the mode that increases wind-powered electricity generation blade's bolt quantity, reduce the load of single bolt in the blade root, improve the security of blade root bolt, further increase the security that wind-powered electricity generation blade used.
Preferably, the side end of the protruding portion has a slope extending from the inner wall of the protruding portion to the inner wall surface of the root portion outwardly of the side end of the protruding portion.
In this scheme, adopt above-mentioned structural style, set up the inclined plane on the bulge for the upper surface of bulge is in the slow transition of the both sides of bulge, avoids the emergence of fold, reduces stress concentration.
Preferably, the protruding portion includes a first end portion and a second end portion opposite to each other, the opening of the second connection hole is located on an end face of the first end portion, and a thickness of the second end portion is gradually reduced in a direction away from the first end portion.
In this scheme, adopt above-mentioned structural style, the thickness of second tip diminishes along the direction of keeping away from first tip gradually in the bulge, and the thickness that is close to the apex of wind-powered electricity generation blade in the bulge diminishes gradually promptly to reduce the clearance between bulge and the blade root, strengthen wind-powered electricity generation blade bulk strength.
The invention also provides a manufacturing method of the wind power blade, which is used for manufacturing the wind power blade, and the manufacturing method comprises the following steps:
s1, modeling the wind power blade, carrying out loading analysis on the blade root of the wind power blade, and calculating to obtain an area with the largest loading of the blade root and the lowest safety;
s2, calculating the number of the second connecting pieces required to be added according to the area, and obtaining the size of the bulge according to the required number of the second connecting pieces and the radius of the inner wall of the blade root;
s3, forming the wind power blade without the bulge in the wind power blade mould;
s4, arranging the convex part in the maximum loaded area in the blade root;
and S5, forming the first connecting hole and the cylindrical hole on the root part of the blade, and forming the second connecting hole on the protruding part.
In this solution, the area of lowest safety on the root of the blade is calculated, and the number of second connecting pieces that need to be added is calculated to obtain the size of the projection and to manufacture the projection. The bulge part provided with the second connecting piece can increase the number of the connecting pieces in the lowest region of the safety in the blade root part, reduces the load of a single connecting piece in the region, and when the blade root part is connected with the hub through the bolt, the load of a single bolt in the blade root part can be reduced, the bearing capacity of the blade root part is improved, the situations that the bolt is excessively loaded to deform, break and the like are avoided, and the use safety of the wind power blade is further improved. In addition, the bulge and the second connecting piece are only added locally, and compared with the method that a row of second connecting pieces are added on the whole circle of the inner side wall or the outer side wall of the blade root, the weight of the blade root and the weight of a machine head of the whole machine can be effectively reduced, and the load of the whole machine is reduced. And the number of blade root connecting pieces is increased, the number of blade root bolts is increased when the blade root part is connected with the hub bolt, and the diameter of a blade root pitch circle is reduced, so that the size of the hub and a bearing connected with the blade root part of the hub is reduced, and the cost of the whole machine is reduced.
Preferably, step S3 includes:
s31, placing the layer material of the wind power blade in the wind power blade mould;
and S32, pouring resin and curing to form the wind power blade without the bulge.
Preferably, step S4 includes:
s41, stacking and paving multiple layers of glass fiber cloth in the maximum loaded area in the blade root;
s42, paving pouring auxiliary materials, and vacuumizing;
s43, resin pouring and curing;
and S44, removing the pouring auxiliary material to form the convex part.
Preferably, in step S41, the glass fiber cloth is rectangular, and a plurality of layers of the glass fiber cloth are stacked and laid sequentially from large to small.
In this scheme, the fine cloth of multilayer glass adopts from big to little mode to pile up and lay for the both sides of bulge have from the inner wall of bulge to the inclined plane that extends to the internal face of root of leaf portion outside the side of bulge, make the upper surface of bulge slowly pass through in the both sides of bulge, avoid the emergence of fold, reduce stress concentration.
The invention also provides a wind driven generator which comprises the wind power blade.
In this scheme, increase the quantity of the connecting piece between wind-powered electricity generation blade and the wheel hub, reduce the load of single connecting piece in the blade root, when passing through bolted connection between blade root and the wheel hub, can reduce the load of single bolt in the blade root, further increase the security that wind-powered electricity generation blade used.
Preferably, the wind power generator includes a hub, the first connecting member and the second connecting member, one end of the first connecting member passes through the first connecting hole and is connected to the pillar, the other end of the first connecting member is connected to the hub, one end of the second connecting member passes through the second connecting hole and is connected to the pillar, and the other end of the second connecting member is connected to the hub.
In this scheme, increase the bulge that is provided with the second connecting piece at the lateral wall of blade root, be connected through first connecting piece and second between wind-powered electricity generation blade and the wheel hub, improve the bearing capacity of blade root.
The positive progress effects of the invention are as follows:
the bulge part provided with the second connecting hole can increase the number of connecting pieces between the wind power blade and the hub and reduce the load of a single connecting piece in the blade root part, and when the blade root part is connected with the hub through the bolt, the load of a single bolt in the blade root part can be reduced, the bearing capacity of the blade root part is improved, the situations that the bolt is deformed and broken due to overlarge load are avoided, and the use safety of the wind power blade is further improved. In addition, the bulge and the second connecting piece are only added locally, and compared with the method that a row of second connecting pieces are added on the whole circle of the inner side wall or the outer side wall of the blade root, the weight of the blade root and the weight of a machine head of the whole machine can be effectively reduced, and the load of the whole machine is reduced. And the number of blade root connecting pieces is increased, the number of blade root bolts is increased when the blade root part is in bolt connection with the hub, and the diameter of a blade root pitch circle can be reduced under the condition that the bearing capacity of the bolts is certain, so that the size of the hub and a bearing for connecting the hub and the blade root part is reduced, and the cost of the whole machine is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a wind turbine blade according to a preferred embodiment of the present invention.
Fig. 2 is a schematic structural view of another angle of the wind turbine blade according to the preferred embodiment of the invention.
Fig. 3 is a schematic view of laying the glass fiber cloth in the convex portion according to the preferred embodiment of the invention.
Fig. 4 is a schematic structural view of the first cylindrical member according to the preferred embodiment of the present invention.
Fig. 5 is a schematic structural view of the second column member according to the preferred embodiment of the present invention.
Fig. 6 is a schematic flow chart of a manufacturing method of a wind turbine blade according to a preferred embodiment of the invention.
Description of reference numerals:
root of leaf 1
First connecting hole 11
First cylindrical member 121
Third threaded hole 1222
Detailed Description
The present invention is further illustrated by the following examples, but is not limited thereby in the scope of the following examples.
An embodiment of the present invention provides a wind turbine blade, as shown in fig. 1, fig. 2, fig. 4, and fig. 5. The wind power blade comprises a blade root portion 1, a first connecting hole 11 is formed in the end face of one end, connected with a hub of the wind driven generator, of the blade root portion 1, and the first connecting hole 11 is distributed along the circumferential direction of the blade root portion 1. Be equipped with the cylindricality hole 12 with first connecting hole 11 intercommunication on the outer peripheral face of root of leaf 1, cylindricality hole 12 corresponds the setting with first connecting hole 11, is equipped with in the cylindricality hole 12 with cylindricality hole 12 complex cylindricality piece. First connecting hole 11 is used for installing first connecting piece, and the one end and the cylindricality piece of first connecting piece are connected, and wheel hub is connected to the other end of first connecting piece. Be equipped with bulge 2 on the lateral wall of root of leaf 1, second connecting hole 21 with cylindricality hole 12 intercommunication is seted up on the terminal surface of bulge 2 towards the one end of wheel hub, and second connecting hole 21 is used for installing the second connecting piece, and the one end and the cylindricality piece of second connecting piece are connected, and wheel hub is connected to the other end of second connecting piece, and the wind-powered electricity generation blade passes through first connecting piece, second connecting piece and installs on aerogenerator's wheel hub.
In the embodiment, the wind power blade adopts the structure, on the first hand, the number of the connecting pieces between the wind power blade and the hub is increased, the load of a single connecting piece in the blade root part 1 is reduced, when the blade root part 1 is connected with the hub through the bolt, the load of a single bolt in the blade root part 1 can be reduced, the bearing capacity of the blade root part 1 is improved, the bearing capacity of the blade root part is improved, the situations that the bolt is deformed and broken due to overlarge load are avoided, and the use safety of the wind power blade is further improved; in the second aspect, the bulge part 2 and the second connecting piece are only added locally, and compared with the method that a row of second connecting pieces are added on the whole circle of the inner side wall or the outer side wall of the blade root part 1, the weight of the blade root part 1 and the weight of a machine head of the whole machine can be effectively reduced, and the load of the whole machine is reduced; and in the third aspect, the number of blade root connecting pieces is increased, the number of blade root bolts is increased when the blade root part 1 is in bolt connection with the hub, and the diameter of a blade root pitch circle can be reduced under the condition that the bearing capacity of the bolts is certain, so that the sizes of the hub and a bearing for connecting the hub and the blade root part 1 are reduced, and the cost of the whole machine is reduced.
In this embodiment, as shown in fig. 4 and 5, the column member includes a first column member 121 and a second column member 122, and a first threaded hole 1211 for engaging with the first connector is provided on a side wall of the first column member 121. The second column member 122 has a second screw hole 1221 formed in a side wall thereof for engaging with the first connector, and a third screw hole 1222 for engaging with the second connector. Correspondingly, the first connecting piece is a stud bolt, and the second connecting piece is a stud bolt. The wind power blade comprises a single-row area and a double-row area, wherein the double-row area is an area provided with the protruding parts. In the single row area, the first column member 121 is installed in the column hole 12, the first connecting member passes through the first connecting hole 11 to be connected with the first threaded hole 1211 in a matching manner, and the other end of the first connecting member is connected with the hub. In the double-row area, the second cylindrical member 122 is installed in the cylindrical hole 12, the first connecting piece penetrates through the first connecting hole 11 to be matched and connected with the second threaded hole 1221, and the other end of the first connecting piece is connected with the hub; the second connecting piece passes through the second connecting hole and is connected with the third screw hole 1222 in a matching manner, and the other end of the first connecting piece is connected with the hub. Through the mode of increasing the bolt quantity of wind-powered electricity generation blade, reduce the load of single bolt in the root of blade 1, improve the security of blade root bolt, further increase the security that wind-powered electricity generation blade used.
Preferably, through simulation calculation, the blade root 1 is subjected to load analysis, a bolt area with the largest load and the lowest safety is found, the load bearing capacity of the blade root 1 and the safety of the blade root bolt are greatly improved through the addition of the bulge 2 and the second connecting piece in the bulge 2 in the bolt area, the possibility of bolt fracture and deformation in the bolt area with the lowest safety is reduced, and the use safety of the wind power blade is further improved.
The side end of the projecting portion 2 has a slope 23, and the slope 23 extends from the inner wall surface of the projecting portion 2 to the inner wall surface of the blade root portion 1 toward the outside of the side end of the projecting portion 2. The inclined plane 23 is arranged on the bulge 2, so that the upper surface of the bulge 2 is slowly transited on two sides of the bulge 2, wrinkles are avoided, and stress concentration is reduced. Specifically, both sides of the projecting portion 2 extend from the inner wall surface of the projecting portion 2 to the inner wall surface of the root portion 1, respectively, toward the outside of the side end of the projecting portion 2.
The protruding portion 2 includes a first end portion and a second end portion opposite to each other, an opening of the second connection hole 21 is located at an end surface of the first end portion, and a thickness of the second end portion is gradually reduced in a direction away from the first end portion. The thickness that is close to the apex of wind-powered electricity generation blade in the root of leaf 1 diminishes gradually, and the thickness of second tip diminishes gradually along the direction of keeping away from first end in the bulge 2, and the thickness that is close to the apex of wind-powered electricity generation blade in the bulge 2 diminishes gradually promptly to reduce the clearance between bulge 2 and the root of leaf 1, strengthen wind-powered electricity generation blade bulk strength.
An embodiment of the present invention provides a manufacturing method of a wind turbine blade, which is used for manufacturing the wind turbine blade according to any one of the above embodiments, and as shown in fig. 6, the manufacturing method of the wind turbine blade includes the following steps:
s1, modeling the wind power blade, carrying out loading analysis on the root part 1 of the wind power blade, and calculating to obtain an area with the maximum loading and the minimum safety of the root part 1;
s2, calculating the number of second connecting pieces required to be added according to the area, and obtaining the size of the bulge 2 according to the number of the required second connecting pieces and the radius of the inner wall of the blade root 1;
s3, forming the wind power blade without the bulge 2 in the wind power blade mould;
s4, arranging a convex part 2 in the maximum loaded area of the blade root part 1;
and S5, opening a first connecting hole 11 and a cylindrical hole 12 on the blade root part 1, and opening a second connecting hole 21 on the bulge part 2. Correspondingly, when the whole wind driven generator is manufactured, the bearing connected with the blade root part 1 of the hub is designed with a corresponding local structure and hole positions, and then the wind power blade and the hub are connected in a hoisting mode according to the corresponding hole positions.
In the present embodiment, the number of second connection members required to be added is calculated based on the calculated lowest safety region on the blade root 1 to obtain the size of the projection 2 and manufacture the projection 2. The convex part 2 provided with the second connecting piece can increase the number of the connecting pieces in the region with the lowest safety in the blade root part 1, reduces the load of a single connecting piece in the region, and can reduce the load of a single bolt in the blade root part 1 when the blade root part 1 is connected with the hub through the bolt, thereby improving the bearing capacity of the blade root part 1, improving the safety of the bolt of the blade root part and further increasing the use safety of the wind power blade. In addition, only the bulge part 2 and the second connecting piece are locally added, and compared with the method that a row of second connecting pieces are added on the whole circle of the inner side wall or the outer side wall of the blade root part 1, the weight of the blade root part 1 and the weight of a machine head of the whole machine can be effectively reduced, and the load of the whole machine is reduced. And the number of blade root connecting pieces is increased, the number of blade root bolts is increased when the blade root part 1 is connected with the hub bolt, and the pitch circle diameter of the blade root is reduced, so that the size of the hub and a bearing connected with the blade root part 1 is reduced, and the production cost of the whole machine is reduced.
Wherein, step S3 includes:
s31, placing a layer material of the wind power blade in the wind power blade mould;
and S32, pouring resin, curing and die assembling to form the wind power blade without the bulge 2.
Step S4 includes:
s41, selecting the size of the glass fiber cloth 22 according to the size of the obtained bulge 2, and stacking and paving multiple layers of glass fiber cloth 22 in the maximum loaded area in the blade root 1;
in step S41, one end of the blade root 1 connected to the hub is set as a connection end, and when laying multiple layers of the glass fiber cloth 22, a cloth blocking positioning tool is placed at the connection end and used as a positioning scale for chord-wise laying of the glass fiber cloth 22, and the cloth blocking positioning tool makes one end of the multiple layers of the glass fiber cloth 22 flush with the connection end, so as to ensure that the manufactured protruding portion 2 is flush with the connection end of the blade root 1.
S42, after the glass fiber cloth 22 is laid, laying an infusion auxiliary material outside a boss structure formed by multiple layers of glass fiber cloth 22, and vacuumizing the interior of the infusion auxiliary material;
s43, after the vacuum inspection is qualified, resin is used for vacuum infusion and heating to 75 ℃ for curing until the bulge 2 meets the requirement of being capable of mounting a second connecting piece;
and S44, removing the pouring auxiliary material to form the convex part 2.
As shown in fig. 3, in step S41, the glass fiber cloth 22 is rectangular, and a plurality of layers of glass fiber cloth 22 are stacked and laid in order from large to small. The multilayer glass fiber cloth 22 is stacked and laid in a mode from large to small, the multilayer glass fiber cloth 22 is laid in layers according to the specified interval in the circumferential direction of the blade root part 1 and the direction close to the blade tip, the two sides of the protruding part 2 are provided with inclined planes which extend from the inner wall of the protruding part 2 to the outer side of the side end of the protruding part 2 to the inner wall surface of the blade root part 1, the upper surface of the protruding part 2 is in slow transition on the two sides of the protruding part 2, wrinkles are avoided, and stress concentration is reduced.
An embodiment of the invention provides a wind driven generator, which comprises a wind power blade as described in any one of the above embodiments. Through the quantity that increases the connecting piece between wind-powered electricity generation blade and the wheel hub, reduce the load of single connecting piece in the root of blade 1, when passing through bolted connection between root of blade 1 and the wheel hub, can reduce the load of single bolt in the root of blade 1, further increase the security that wind-powered electricity generation blade used.
The wind driven generator comprises a wheel hub, a first connecting piece and a second connecting piece, one end of the first connecting piece penetrates through the first connecting hole 11 to be connected with the columnar piece, the other end of the first connecting piece is connected with the wheel hub, one end of the second connecting piece penetrates through the second connecting hole 21 to be connected with the columnar piece, and the other end of the second connecting piece is connected with the wheel hub. The bulge 2 provided with the second connecting piece is additionally arranged on the side wall of the blade root part 1, the wind power blade is connected with the hub through the first connecting piece and the second connecting piece, and the bearing capacity of the blade root part 1 is improved.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. The wind power blade is characterized in that the wind power blade comprises a blade root part, a first connecting hole is formed in the end face of one end, connected with a hub of a wind driven generator, of the blade root part, the first connecting hole is distributed along the circumferential direction of the blade root part, a cylindrical hole communicated with the first connecting hole is formed in the outer circumferential face of the blade root part, a cylindrical piece matched with the cylindrical hole is arranged in the cylindrical hole, the first connecting hole is used for installing a first connecting piece, one end of the first connecting piece is connected with the cylindrical piece, the other end of the first connecting piece is connected with the hub, a bulge is formed in the side wall of the blade root part, a second connecting hole communicated with the cylindrical hole is formed in the end face, facing one end of the hub, of the bulge, the second connecting hole is used for installing a second connecting piece, one end of the second connecting piece is connected with the cylindrical piece, the other end of the second connecting piece is connected with the hub.
2. The wind turbine blade as claimed in claim 1, wherein the pillar member comprises a first pillar member and a second pillar member, and a first threaded hole for engaging with the first connector is formed in a side wall of the first pillar member;
and a second threaded hole matched with the first connecting piece and a third threaded hole matched with the second connecting piece are formed in the side wall of the second cylindrical piece.
3. The wind power blade according to claim 1, wherein the side end of the projecting portion has a slope extending from an inner wall of the projecting portion to an inner wall surface of the root portion, facing outward of the side end of the projecting portion.
4. The wind blade as set forth in claim 1, wherein said protruding portion includes a first end portion and a second end portion opposite to each other, an opening of said second connection hole is located at an end surface of said first end portion, and a thickness of said second end portion is gradually reduced in a direction away from said first end portion.
5. A method of manufacturing a wind blade for manufacturing a wind blade according to any of claims 1-4, the method comprising the steps of:
s1, modeling the wind power blade, carrying out loading analysis on the blade root of the wind power blade, and calculating to obtain an area with the largest loading of the blade root and the lowest safety;
s2, calculating the number of the second connecting pieces required to be added according to the area, and obtaining the size of the bulge according to the required number of the second connecting pieces and the radius of the inner wall of the blade root;
s3, forming the wind power blade without the bulge in the wind power blade mould;
s4, arranging the convex part in the maximum loaded area in the blade root;
and S5, forming the first connecting hole and the cylindrical hole on the root part of the blade, and forming the second connecting hole on the protruding part.
6. The method for manufacturing a wind turbine blade according to claim 5, wherein the step S3 includes:
s31, placing the layer material of the wind power blade in the wind power blade mould;
and S32, pouring resin and curing to form the wind power blade without the bulge.
7. The method for manufacturing a wind turbine blade according to claim 5, wherein the step S4 includes:
s41, stacking and paving multiple layers of glass fiber cloth in the maximum loaded area in the blade root;
s42, paving pouring auxiliary materials, and vacuumizing;
s43, resin pouring and curing;
and S44, removing the pouring auxiliary material to form the convex part.
8. The method according to claim 7, wherein in step S41, the glass fiber cloth is rectangular, and a plurality of layers of the glass fiber cloth are stacked and laid sequentially from large to small.
9. Wind power generator, characterized in that it comprises a wind power blade according to any of claims 1-4.
10. The wind power generator as claimed in claim 9, wherein the wind power generator includes a hub, the first connecting member and the second connecting member, one end of the first connecting member is connected to the pillar member through the first connecting hole, the other end of the first connecting member is connected to the hub, one end of the second connecting member is connected to the pillar member through the second connecting hole, and the other end of the second connecting member is connected to the hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210006638.0A CN114320782A (en) | 2022-01-05 | 2022-01-05 | Wind power blade, manufacturing method thereof and wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210006638.0A CN114320782A (en) | 2022-01-05 | 2022-01-05 | Wind power blade, manufacturing method thereof and wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114320782A true CN114320782A (en) | 2022-04-12 |
Family
ID=81025127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210006638.0A Pending CN114320782A (en) | 2022-01-05 | 2022-01-05 | Wind power blade, manufacturing method thereof and wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114320782A (en) |
-
2022
- 2022-01-05 CN CN202210006638.0A patent/CN114320782A/en active Pending
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