Wind power blade with core material structure designed in partition mode

Abstract

The utility model discloses a wind power blade with a core material structure designed in a partitioned mode, and relates to the technical field of wind power blades, the wind power blade comprises a blade shell, the blade shell comprises an upper shell body and a lower shell body, main beams are fixedly connected to the inner wall of the upper shell body and the inner wall of the lower shell body, core materials are laid on the two sides of the two main beams, and the core materials are arranged in the upper shell body and the lower shell body. Two sets of clamping strips are fixedly connected to the sides, close to each other, of the two main beams, and clamping grooves are formed in the middle positions of the two sets of clamping strips. The whole web is divided into the left web, the middle web and the right web, then the left web, the middle web and the right web can be manufactured in batches, the manufacturing speed is increased by reducing the manufacturing difficulty, and meanwhile, the whole web is split, so that the left web, the middle web and the right web are light in weight, and the manufacturing cost is reduced. And therefore, a worker can conveniently install the fan blade, and the manufacturing efficiency of the fan blade is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine blades, in particular to a wind turbine blade with a core material structure partitioning design. Background Art

[0002] Wind blades are the core component of wind turbines. Based on the principles of aerodynamics, when wind blows through the blades, the curved surface on the blades will produce different airflow speeds and air pressure distributions, thereby generating a forward aerodynamic force on the blades, causing the blades to start rotating. The rotation of the blades drives the rotation of the wind turbine rotor, thereby generating electricity.

[0003] Among them, the wind turbine blade with a core material structure partitioning design with announcement number CN218844479U fully considers the impact of different core material processing methods on the performance of the sandwich structure, and combines the characteristics of blade spanwise load distribution and chord-wise structure anti-buckling. Different core material processing methods are adopted according to the spanwise distribution and chord-wise distribution of the blade according to the structural design requirements. By targeting the differences in core material performance of different processing methods, the core material structure is optimized. While improving the overall performance, it can also effectively reduce the amount of core material used and reduce the cost of wind turbine blades.

[0004] However, the webs inside existing wind turbine blades with a partitioned core structure are usually formed in one piece, which makes them large in size, making it inconvenient for workers to manufacture and install them with the blade shell, greatly reducing the production efficiency of the blades. Utility Model Content

[0005] In view of the problems existing in the existing wind turbine blades with a partitioned core material structure, the present utility model is proposed.

[0006] Therefore, the purpose of the present invention is to provide a wind turbine blade with a core material structure partitioning design, which solves the problem that the internal webs of existing wind turbine blades with a core material structure partitioning design are usually integrally formed, have a large size, and are inconvenient for workers to manufacture and install with the blade shell, greatly reducing the production efficiency of the blade.

[0007] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0008] A wind turbine blade with a core material structure partitioning design includes a blade shell, the blade shell includes an upper shell and a lower shell, the inner walls of the upper shell and the lower shell are fixedly connected to a main beam, both sides of the two main beams are paved with core material, and the sides of the two main beams close to each other are fixedly connected to two groups of clips, the middle positions of the two groups of clips are provided with a clip groove, and the interiors of the two clip grooves are sequentially provided with a left web, a middle web and a right web from left to right, and the left web, the middle web and the right web constitute a complete web.

[0009] Preferably, the core material includes a first supporting layer, a filling layer and a second supporting layer, the first supporting layer is arranged on the inner wall of the blade shell, the filling layer is arranged on the side of the first supporting layer away from the inner wall of the blade shell, and the second supporting layer is arranged on the side of the filling layer away from the first supporting layer.

[0010] Preferably, the two ends of the middle web are fixedly connected with a first T-shaped bar and a second T-shaped bar respectively.

[0011] Preferably, a first T-shaped slot is provided at one end of the left web, and the first T-shaped slot matches the first T-shaped bar.

[0012] Preferably, a second T-shaped slot is provided at one end of the right web, and the second T-shaped slot matches the second T-shaped bar.

[0013] Preferably, both ends of the left web, the middle web and the right web are trapezoidal in shape.

[0014] Preferably, the first supporting layer and the second supporting layer are both made of glass fiber cloth.

[0015] Preferably, the filling layer is a foam board.

[0016] Preferably, both main beams are made of carbon fiber strips.

[0017] Preferably, a strong adhesive is provided between the upper shell and the lower shell.

[0018] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0019] 1. The utility model divides a complete web into a left web, a middle web and a right web, which can then be batch-produced separately, thereby increasing the manufacturing speed by reducing the manufacturing difficulty. At the same time, because the entire web is split, the left web, the middle web and the right web have a lighter weight, which makes it easier for workers to install them, thereby improving the efficiency of wind turbine blade manufacturing.

[0020] 2. The utility model can strengthen the connection between the left web, the middle web and the right web by inserting the first T-shaped bar and the second T-shaped bar into the interior of the first T-shaped chute and the second T-shaped chute respectively, thereby preventing the left web, the middle web and the right web from separating. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 For the utility model Figure 1 sectional view of

[0024] Figure 3 For the utility model Figure 2 A schematic side cross-sectional structural diagram of ;

[0025] Figure 4 For the utility model Figure 2 Top view of the connection between the left middle web, the middle web and the right middle web;

[0026] Figure 5 For the utility model Figure 3 A magnified schematic diagram of part A.

[0027] Description of reference numerals:

[0028] 1. Blade shell; 2. Upper shell; 3. Lower shell; 4. Main beam; 5. Core material; 6. Card strip; 7. Left web; 8. Middle web; 9. Right web; 10. First supporting layer; 11. Filling layer; 12. Second supporting layer; 13. First T-shaped bar; 14. Second T-shaped bar; 15. Strong adhesive. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] The embodiment of the utility model discloses a wind turbine blade with a core material structure partition design.

[0031] Example 1

[0032] Reference Figure 1-5A wind turbine blade with a core material structure partitioning design includes a blade shell 1, which includes an upper shell 2 and a lower shell 3. The inner walls of the upper shell 2 and the lower shell 3 are fixedly connected with a main beam 4, and core materials 5 are laid on both sides of the two main beams 4. The core material 5 includes a first supporting layer 10, a filling layer 11 and a second supporting layer 12. The first supporting layer 10 is arranged on the inner wall of the blade shell 1, the filling layer 11 is arranged on the side of the first supporting layer 10 away from the inner wall of the blade shell 1, and the second supporting layer 12 is arranged on the side of the filling layer 11 away from the first supporting layer 10.

[0033] Reference Figure 2-5 Two sets of clips 6 are fixedly connected to the sides of the two main beams 4 that are close to each other. A clip groove is provided in the middle position of the two sets of clips 6. The inside of the two clip grooves are provided with a left web 7, a middle web 8 and a right web 9 from left to right. The left web 7, the middle web 8 and the right web 9 form a complete web.

[0034] A complete web is divided into a left web 7, a middle web 8 and a right web 9, which can then be mass-produced separately, thereby increasing the manufacturing speed by reducing the difficulty of manufacturing. At the same time, because the entire web is split, the left web 7, the middle web 8 and the right web 9 have a lighter weight, which makes it easier for staff to install them, thereby improving the efficiency of wind turbine blade manufacturing.

[0035] Example 2

[0036] Based on the first embodiment, Figure 2 and Figure 4 The two ends of the middle web 8 are respectively fixedly connected with the first T-shaped bar 13 and the second T-shaped bar 14. A first T-shaped slide groove is opened at one end of the left web 7, and the first T-shaped slide groove matches the first T-shaped bar 13. A second T-shaped slide groove is opened at one end of the right web 9, and the second T-shaped slide groove matches the second T-shaped bar 14.

[0037] The first T-shaped bar 13 and the second T-shaped bar 14 are respectively inserted into the first T-shaped chute and the second T-shaped chute, thereby strengthening the connection between the left web 7, the middle web 8 and the right web 9, and preventing the left web 7, the middle web 8 and the right web 9 from separating.

[0038] Example 3

[0039] Based on the first embodiment, Figure 3 and Figure 5 , both ends of the left web 7, the middle web 8 and the right web 9 are trapezoidal.

[0040] Because both ends of the left web 7, the middle web 8 and the right web 9 are trapezoidal in shape, the widths of the two ends of the left web 7, the middle web 8 and the right web 9 are smaller than the width in the middle, which makes it more convenient for the staff to insert the left web 7, the middle web 8 and the right web 9 into the interior of the slot.

[0041] Example 4

[0042] Based on the first embodiment, Figure 3 and Figure 5 The first supporting layer 10 and the second supporting layer 12 are both glass fiber cloth, and the filling layer 11 is a foam board.

[0043] Glass fiber has high strength, and the filling layer 11 can reduce the overall weight of the blade.

[0044] Example 5

[0045] Based on the first embodiment, Figure 3 and Figure 5 , both main beams 4 are carbon fiber strips.

[0046] The carbon fiber strips have high strength and thus can play a supporting role.

[0047] Example 6

[0048] Based on the first embodiment, Figure 3 A strong adhesive 15 is provided between the upper shell 2 and the lower shell 3.

[0049] The upper shell 2 and the lower shell 3 can be connected by using a strong adhesive 15 .

[0050] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wind turbine blade with a core material structure partition design, comprising a blade shell (1), characterized in that: The blade shell (1) comprises an upper shell (2) and a lower shell (3), the inner walls of the upper shell (2) and the lower shell (3) are fixedly connected to a main beam (4), both sides of the two main beams (4) are paved with core materials (5), and the sides of the two main beams (4) close to each other are fixedly connected to two groups of clips (6), the middle positions of the two groups of clips (6) are provided with a clip groove, and the insides of the two clip grooves are sequentially provided with a left web (7), a middle web (8) and a right web (9) from left to right, and the left web (7), the middle web (8) and the right web (9) form a complete web.

2. The wind turbine blade with a core structure partition design according to claim 1 is characterized in that: The core material (5) comprises a first supporting layer (10), a filling layer (11) and a second supporting layer (12); the first supporting layer (10) is arranged on the inner wall of the blade shell (1); the filling layer (11) is arranged on a side of the first supporting layer (10) away from the inner wall of the blade shell (1); and the second supporting layer (12) is arranged on a side of the filling layer (11) away from the first supporting layer (10).

3. The wind turbine blade with a core structure partition design according to claim 1, characterized in that: The two ends of the middle web (8) are respectively fixedly connected with a first T-shaped bar (13) and a second T-shaped bar (14).

4. The wind turbine blade with a core structure partition design according to claim 1, characterized in that: A first T-shaped slot is provided at one end of the left web (7), and the first T-shaped slot matches the first T-shaped bar (13).

5. The wind turbine blade with a core structure partition design according to claim 1, characterized in that: A second T-shaped slot is provided at one end of the right web (9), and the second T-shaped slot matches the second T-shaped bar (14).

6. The wind turbine blade with a core structure partition design according to claim 1, characterized in that: Both ends of the left web (7), the middle web (8) and the right web (9) are trapezoidal in shape.

7. The wind turbine blade with a core structure partition design according to claim 2, characterized in that: The first supporting layer (10) and the second supporting layer (12) are both glass fiber cloth.

8. The wind turbine blade with a core structure partition design according to claim 2, characterized in that: The filling layer (11) is a foam board.

9. The wind turbine blade with a core structure partition design according to claim 1, characterized in that: The two main beams (4) are both carbon fiber strips.

10. The wind turbine blade with a core structure partition design according to claim 1, characterized in that: A strong adhesive (15) is provided between the upper shell (2) and the lower shell (3).

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