Light reinforced foam sandwich panel for blade

Abstract

The utility model discloses a light reinforced foam sandwich panel for a blade. The light reinforced foam sandwich panel comprises a foam core body, an upper layer balsa wood cover plate, a lower layer balsa wood cover plate and a PET cover plate, an upper layer balsa wood cover plate and a lower layer balsa wood cover plate are respectively arranged on two sides of the foam core body; pET cover plates are arranged on the outer sides of the upper layer balsa wood cover plate and the lower layer balsa wood cover plate. The foam sandwich board is light in weight, and meanwhile, the mechanical strength and the corrosion resistance of materials are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blade core material processing, in particular to a lightweight reinforced foam sandwich panel for blades. Background Art

[0002] Wind turbine blades are key components of wind power generation systems, directly impacting overall system performance. Currently, most micro wind turbine blades are made of wood. However, existing wooden blades suffer from poor mechanical properties, prone to breakage, and poor corrosion resistance. These factors severely limit the efficiency and service life of wind turbine equipment. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a lightweight reinforced foam sandwich panel for blades, which has light weight and improves the mechanical strength and corrosion resistance of the material.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solution: a lightweight reinforced foam sandwich panel for blades includes a foam core, an upper balsa wood cover panel, a lower balsa wood cover panel and a PET cover panel; an upper balsa wood cover panel and a lower balsa wood cover panel are respectively arranged on both sides of the foam core; and a PET cover panel is arranged on the outer sides of the upper balsa wood cover panel and the lower balsa wood cover panel.

[0005] Furthermore, a plurality of grooves are provided on both sides of the foam core; and the upper balsa wood cover board and the lower balsa wood cover board have convex strips matching the grooves.

[0006] Furthermore, the foam core and the upper and lower balsa wood cover boards, as well as the upper and lower balsa wood cover boards and the PET cover boards are bonded via an adhesive layer.

[0007] Furthermore, a reinforcing column is provided on the side of the PET cover plate that contacts the upper balsa wood cover plate or the lower balsa wood cover plate; the reinforcing column and the PET cover plate are integrally formed; through holes matching the reinforcing column are provided on the foam core, the upper balsa wood cover plate and the lower balsa wood cover plate; the reinforcing column is inserted into the through hole.

[0008] Furthermore, the reinforcing column in the through hole and the gap member in the through hole are filled with resin.

[0009] Furthermore, the outer side surface of the PET cover plate is provided with a plurality of transverse grooves and a plurality of longitudinal grooves.

[0010] The beneficial effects of the utility model are:

[0011] The foam sandwich panel of the utility model has a simple structure and adopts PET cover plates on both sides, which has good waterproof performance and will not cause problems such as corrosion and mildew even if it is in contact with water for a long time. At the same time, it has good wear resistance, high mechanical strength and strong impact resistance.

[0012] The utility model adopts foam core material as the main body, and arranges balsa wood layer and PET board layer on both sides thereof, thereby improving the compression resistance and shear resistance of the wind turbine blades, further enhancing their mechanical properties, thereby extending the service life of the wind turbine blades, and effectively improving the practicality of the foam core material. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 It is a structural diagram of the present utility model.

[0015] Figure 2 This is a structural diagram of Example 2.

[0016] Figure 3 This is a structural diagram of Example 3. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below through specific implementation methods. Example 1

[0018] refer to Figure 1 This embodiment is a lightweight reinforced foam sandwich panel for blades, comprising a foam core 1, an upper balsa cover board 2, a lower balsa cover board 3, and a PET cover board 4. The upper balsa cover board 2 and the lower balsa cover board 3 are disposed on either side of the foam core 1, respectively; and the PET cover board 4 is disposed on the outer sides of each of the upper balsa cover board 2 and the lower balsa cover board 3. The foam core 1 is bonded to the upper balsa cover board 2 and the lower balsa cover board 3, and the upper balsa cover board 2 and the lower balsa cover board 3 are bonded to the PET cover board 4 via an adhesive layer.

[0019] The utility model adopts foam core material as the main body, and arranges balsa wood layer and PET board layer on both sides thereof, thereby improving the compression resistance and shear resistance of the wind turbine blades, further enhancing their mechanical properties, thereby extending the service life of the wind turbine blades, and effectively improving the practicality of the foam core material. Example 2

[0020] In this embodiment, based on the embodiment 1, a plurality of grooves 11 are provided on both sides of the foam core 1 ; the upper balsa wood cover board 2 and the lower balsa wood cover board 3 have convex strips 12 matching the grooves 11 .

[0021] The utility model provides the grooves 11 and the ridges 12 to improve the connectivity between the balsa wood and the foam core. Example 3

[0022] In this embodiment, a reinforcing column 41 is provided on the side of the PET cover plate 4 that contacts the upper balsa wood cover plate 2 or the lower balsa wood cover plate 3; the reinforcing column 41 is integrally formed with the PET cover plate 4; through holes 42 matching the reinforcing column 41 are provided on the foam core 1, the upper balsa wood cover plate 2 and the lower balsa wood cover plate 3; the reinforcing column 41 is inserted into the through hole 42.

[0023] The reinforcing pillar 41 in the through hole 42 and the gap member in the through hole 42 are filled with resin.

[0024] In this embodiment, the connection strength and the connection strength of the core plate as a whole are improved by providing through holes and reinforcement columns 41 .

[0025] Preferably, the outer side surface of the PET cover plate 4 is provided with a plurality of transverse grooves and a plurality of longitudinal grooves.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions should also be deemed to fall within the protection scope of the technical solution of the present invention.

Claims

1. Lightweight reinforced foam sandwich panels for blades, characterized by: The invention comprises a foam core (1), an upper balsa wood cover board (2), a lower balsa wood cover board (3) and a PET cover board (4); the upper balsa wood cover board (2) and the lower balsa wood cover board (3) are respectively arranged on both sides of the foam core (1); and the PET cover board (4) is arranged on the outer sides of the upper balsa wood cover board (2) and the lower balsa wood cover board (3).

2. The lightweight reinforced foam sandwich panel for blades according to claim 1, characterized in that: A plurality of grooves (11) are provided on both sides of the foam core (1); and convex strips (12) matching the grooves (11) are provided on the upper balsa wood cover board (2) and the lower balsa wood cover board (3).

3. The lightweight reinforced foam sandwich panel for blades according to claim 1, characterized in that: The foam core (1) is bonded to the upper balsa wood cover board (2) and the lower balsa wood cover board (3), and the upper balsa wood cover board (2) and the lower balsa wood cover board (3) are bonded to the PET cover board (4) via an adhesive layer.

4. The lightweight reinforced foam sandwich panel for blades according to claim 1, characterized in that: A reinforcing column (41) is provided on the side of the PET cover plate (4) that contacts the upper balsa wood cover plate (2) or the lower balsa wood cover plate (3); the reinforcing column (41) and the PET cover plate (4) are integrally formed; through holes (42) matching the reinforcing column (41) are provided on the foam core (1), the upper balsa wood cover plate (2) and the lower balsa wood cover plate (3); and the reinforcing column (41) is inserted into the through hole (42).

5. The lightweight reinforced foam sandwich panel for blades according to claim 1, characterized in that: The reinforcing column (41) inside the through hole (42) and the gap piece inside the through hole (42) are filled with resin.

6. The lightweight reinforced foam sandwich panel for blades according to claim 1, characterized in that: The outer side surface of the PET cover plate (4) is provided with a plurality of transverse grooves and a plurality of longitudinal grooves.

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