Main beam structure of wind power blade

Abstract

The utility model relates to a wind power blade girder structure which comprises a blade shell and glass plates, a glass plate frame formed by a plurality of layers of glass plate structures is stacked on the blade shell, each layer of glass plate structure is formed by connecting a plurality of glass plates in parallel in a rotating mode, and rectangular grooves are formed in the middles of the two side faces of each glass plate. Every two adjacent glass plates are connected through a steering mechanism installed in the corresponding rectangular groove, each steering mechanism comprises end connecting pieces and a middle connecting piece, the peripheries of the two ends of each middle connecting piece are sleeved with the end connecting pieces respectively, and the middle connecting pieces are in a rotating state along the sleeving positions of the middle connecting pieces and the end connecting pieces; the two end connecting pieces are installed in the corresponding rectangular grooves in the upper opening portions of the two adjacent glass plates respectively, a net-shaped structure for dispersing loads is arranged on the top faces of the glass plates, a plurality of rows of glass beads are arranged on the net-shaped structure, every two adjacent glass beads in each row of glass beads are connected through a glass rod, and the glass rods are installed on the net-shaped structure. According to the utility model, the problem that the glass plate is poorly attached to the inner wall of the blade shell due to insufficient rotational degree of freedom is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a main beam structure of a wind power blade. Background Art

[0002] The main beam of a wind power blade is mainly used in the main structure of the wind power blade and is a key load-bearing component of the wind power blade. It is located at the leading edge of the blade and runs through the entire length of the blade. The main function of the main beam is to bear the load and torque of the blade and the internal electromechanical equipment, ensuring that the blade can operate stably and safely under harsh environments such as strong winds. At the same time, the main beam also needs to transmit power to convert wind energy into electrical energy.

[0003] In the laying operation of the main beam structure of a wind power blade, due to the insufficient rotational freedom of the glass plate, the problem of poor fitting between the glass plate and the inner wall of the blade housing is a relatively common phenomenon. In this case, under the action of wind force, the blade may be subjected to various complex loads. If these loads cannot be effectively dispersed but concentrated in a certain area, the materials in this area are likely to be fatigued and damaged, or even cracked or broken. Moreover, poor fitting will also affect the aerodynamic performance of the blade, increase the drag coefficient of the blade, reduce the mechanical energy that can be converted under the same wind speed, and lower the power generation efficiency of the wind power generation unit. Summary of the Invention

[0004] In view of the above situation, to overcome the defects of the prior art, the purpose of the utility model is to provide a main beam structure of a wind power blade, which can effectively solve the problem of poor fitting between the glass plate and the inner wall of the blade housing due to insufficient rotational freedom.

[0005] The technical solution of the utility model is: it includes a blade housing and a glass plate. A glass plate frame composed of multiple layers of glass plate structures is stacked on the blade housing. Each layer of glass plate structure is composed of multiple glass plates connected in parallel and rotatably. Rectangular grooves are correspondingly provided in the middle of both side surfaces of each glass plate. The mouths of the rectangular grooves of two adjacent glass plates in each layer of glass plate structure correspond to each other and are connected by a steering mechanism installed in the rectangular grooves. The steering mechanism includes an end connector and an intermediate connector. The outer periphery of both ends of the intermediate connector is respectively sleeved with an end connector. The intermediate connector rotates along the sleeved part with the end connector. The two end connectors are respectively installed in the rectangular grooves with corresponding mouths of two adjacent glass plates. A mesh structure for dispersing loads is provided on the top surface of the glass plate. Multiple rows of glass beads are provided on the mesh structure. Two adjacent glass beads in each row of glass beads are connected by a glass rod, and the glass rod is installed on the mesh structure.

[0006] Through the steering mechanism, the utility model increases the fitting degree with the blade housing during the installation of the main beam, and through the fixation of the glass rods and glass beads provided on each glass plate, it can better disperse loads and prevent problems such as material damage caused by poor fitting of the glass plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic structural view of the present utility model;

[0008] Figure 2 is a schematic structural view of two glass plates of the present utility model connected by a steering mechanism;

[0009] Figure 3 is a main sectional view of two glass plates of the present utility model connected by a steering mechanism;

[0010] Figure 4 is a schematic structural view of one glass plate connected to the steering mechanism of the present utility model;

[0011] Figure 5 is the present utility model Figure 4 a partial enlarged view of part A.

[0012] The reference numerals in the drawings are: 1, blade housing; 2, glass plate; 3, rectangular groove; 4, connecting block; 5, spherical segment-shaped groove; 6, spherical segment body; 7, glass rod; 8, glass bead; 9, skin layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The present utility model will be further described below in conjunction with the drawings and specific embodiments:

[0014] As Figures 1 - 5 shown, a main beam structure of a wind turbine blade includes a blade housing 1 and a glass plate 2. A glass plate frame composed of multiple layers of glass plate structures is stacked on the blade housing 1 from top to bottom. Each layer of glass plate structure is composed of a plurality of glass plates 2 connected in parallel and rotatably. Rectangular grooves 3 are correspondingly provided in the middle of both side surfaces of each glass plate 2. The openings of the two rectangular grooves 3 on the same glass plate 2 face away from each other; the openings of the rectangular grooves 3 of two adjacent glass plates 2 in each layer of glass plate structure face each other and are connected by a steering mechanism installed in the rectangular grooves 3. The steering mechanism includes an end connector and an intermediate connector. The outer peripheries of both ends of the intermediate connector are respectively sleeved with end connectors. The intermediate connector is in a rotating state along the sleeved part with the end connector. The two end connectors are respectively installed in the rectangular grooves 3 where the openings of two adjacent glass plates 2 face each other. A mesh structure for dispersing loads is provided on the top surface of the glass plate 2. A plurality of columns of glass beads 8 are provided on the mesh structure. Adjacent two glass beads 8 in each column of glass beads 8 are connected by a glass rod 7. The glass rod 7 is installed on the mesh structure. The materials of the glass beads 8, the glass rod 7 and the mesh structure are the same as the material of the glass plate 2.

[0015] The end connector includes two connecting blocks 4 that are in relative contact front and back. Arc-shaped grooves are provided on the relative contact surfaces of the two connecting blocks 4. After the two arc-shaped grooves are butted, they form a spherical segment-shaped groove 5. The two connecting blocks 4 are in relative contact to form a rectangular block, and the rectangular block is installed in the corresponding rectangular groove 3 and matches the size of the rectangular groove 3.

[0016] The intermediate connector includes two spherical segment bodies 6. The bottom surfaces of the two spherical segment bodies 6 are fixedly connected relatively. The height of the spherical segment body 6 is greater than the radius of the spherical segment body 6.

[0017] The two spherical segment bodies 6 of the intermediate connector are respectively rotatably arranged in the corresponding spherical segment-shaped grooves 5.

[0018] Each row of the glass beads 8 is parallel to one side in the length direction of the glass plate 2, and multiple rows of glass beads 8 are arranged at intervals.

[0019] The mesh holes of the mesh structure are diamond-shaped holes.

[0020] Both ends of the glass rod 7 are respectively connected to two corresponding vertices of the diamond-shaped hole where it is located, and the cross-section of the glass rod 7 is square.

[0021] Both the upper top surface and the lower bottom surface of the glass plate frame are connected with a skin layer 9, and the lower skin layer 9 is connected to the blade housing 1.

[0022] Each two stacked glass plates 2 are bonded by an adhesive material.

[0023] During use, first, the two connecting blocks 4 of each end connector of the steering mechanism are respectively clamped and sleeved on the outer periphery of one of the spherical segment bodies 6 of the intermediate connector. Then, the end connectors at both ends of the steering mechanism are respectively inserted into the corresponding rectangular grooves 3 at the mouths of two adjacent glass plates 2 in each layer and fixedly connected. Then, through the steering mechanism, the included angle between two adjacent glass plates 2 in each layer is adjusted. Through the intermediate connector, the two end connectors hinged thereto drive the corresponding glass plates 2 to be adjusted in multiple directions so that the glass plates 2 match the arc surface of the blade housing 1. Then, the multi-layer glass plate structure is stacked, and the two stacked glass plates 2 are bonded and fixed by an adhesive material to form a glass plate frame. Then, the top surface and the bottom surface of the glass plate frame are connected to the skin layer 9, and then the lower skin layer 9 is connected to the blade housing 1 to complete the fixation.

[0024] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Without departing from the spirit of the present invention, that is, within the scope of disclosure, any equivalent or equivalent deformation or replacement of the technical solutions of the present invention belongs to the protection scope of the present invention.

Claims

1. A wind turbine blade main beam structure, characterized in that: The invention comprises a blade shell (1) and a glass plate (2), wherein a glass plate frame composed of a multi-layer glass plate structure is stacked on the blade shell (1), wherein each layer of the glass plate structure is composed of a plurality of glass plates (2) connected in parallel and rotatably, and a rectangular groove (3) is correspondingly provided in the middle of both side surfaces of each glass plate (2); the mouths of the rectangular grooves (3) of two adjacent glass plates (2) in each layer of the glass plate structure correspond to each other and are connected via a steering mechanism installed in the rectangular groove (3), wherein the steering mechanism comprises an end connecting piece and an intermediate connecting piece, wherein the end connecting pieces are respectively sleeved on the outer peripheries of both ends of the intermediate connecting piece, and the intermediate connecting piece is in a rotating state along the sleeved portion of the end connecting piece, and the two end connecting pieces are respectively installed in the rectangular grooves (3) corresponding to the mouths of the two adjacent glass plates (2), and the top surface of the glass plate (2) is provided with a mesh structure for dispersing loads, and a plurality of rows of glass beads (8) are provided on the mesh structure, and two adjacent glass beads (8) in each row of glass beads (8) are connected via a glass rod (7), and the glass rod (7) is installed on the mesh structure.

2. A wind turbine blade main beam structure according to claim 1, characterized in that: The end connecting piece comprises two connecting blocks (4) which are in front and back relative contact, arc grooves are provided on the relative contact surfaces of the two connecting blocks (4), and the two arc grooves form a spherical groove (5) after being butted together, and the two connecting blocks (4) are in relative contact to form a rectangular block.

3. A wind turbine blade main beam structure according to claim 2, characterized in that: The intermediate connecting member comprises two spherical segment bodies (6), the bottom surfaces of the two spherical segment bodies (6) are relatively fixedly connected, and the height of the spherical segment body (6) is greater than the radius of the spherical segment body (6).

4. A wind turbine blade main beam structure according to claim 3, characterized in that: The two spherical segment bodies (6) of the intermediate connecting member are rotatably disposed in corresponding spherical segment-shaped grooves (5).

5. A wind turbine blade main beam structure according to claim 1, characterized in that: Each row of the glass beads (8) is parallel to one side of the glass plate (2) in the length direction, and the multiple rows of glass beads (8) are arranged in a spaced relationship from each other.

6. A wind turbine blade main beam structure according to claim 1, characterized in that: The mesh holes of the mesh structure are diamond-shaped holes.

7. A wind turbine blade main beam structure according to claim 6, characterized in that: Two ends of the glass rod (7) are respectively connected to two corresponding vertices of the rhombus hole, and the cross section of the glass rod (7) is square.

8. A wind turbine blade main beam structure according to claim 1, characterized in that: The upper top surface and the lower bottom surface of the glass plate frame are both connected with a skin layer (9), and the lower skin layer (9) is connected to the blade shell (1).

9. A wind turbine blade main beam structure according to claim 1, characterized in that: Every two stacked glass plates (2) are bonded together by an adhesive material.

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