TPU (thermoplastic polyurethane) protective film for front edge of wind power blade

Abstract

The utility model discloses a wind power blade leading edge TPU protective film, which comprises a blade body and a protective film body, the outer side of the blade body is covered with the protective film body, and the protective film body is composed of a mounting adhesive layer, a TPU layer, a reinforcing layer, a repairing layer and a protective layer. According to the TPU protective film for the front edge of the wind power blade, the whole wind power blade protective film is of an integrally-formed structure, the protective film can be conveniently installed in cooperation with glue, and in the actual use process, the protective effect of the wind power blade can be effectively achieved through the effect of the protective layer and the protruding strips; the protective film is simple in structure and convenient to use, wind power blade protection damage caused by contact and collision of external gravels and the wind power blade is avoided, the protective film can automatically repair fine cracks under certain conditions in cooperation with the effect of the repair layer, the service life of the protective film is effectively guaranteed, and then the actual use requirement can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of protective films, in particular to a TPU protective film for the leading edge of a wind turbine blade. Background Art

[0002] Wind energy is considered to have the greatest development potential among all available energy sources today, and has become an indispensable part of renewable energy generation. Wind turbine blades are important components of wind turbines, and play a vital role in the operating efficiency and service life of wind turbines. However, wind farms are usually built in places with high temperature or high cold, acid-base corrosion and sandstorm environments. Wind turbines have poor working conditions. The leading edge of wind turbine blades is very susceptible to erosion or damage due to the high linear speed, thus shortening the service life of wind turbine blades. To this end, in response to the above problems, a TPU protective film for the leading edge of wind turbine blades is designed to achieve the protective effect of wind turbine blades. Utility Model Content

[0003] The utility model aims to provide a TPU protective film for the leading edge of a wind turbine blade to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a TPU protective film for the leading edge of a wind turbine blade, comprising a blade body and a protective film body, the outer side of the blade body is covered with the protective film body, the protective film body is composed of an installation glue layer, a TPU layer, a reinforcement layer, a repair layer and a protective layer, the installation glue layer, the TPU layer, the reinforcement layer, the repair layer and the protective layer are fixed to each other from bottom to top into an integrated structure, and the installation glue layer is bonded and fixed to the release paper.

[0005] Preferably, the size of the installation adhesive layer is equal to that of the protective film body, and the thickness of the installation adhesive layer is 30-50 μm, and the material of the installation adhesive layer is an acrylic pressure-sensitive adhesive layer. Through the action of the installation adhesive layer, the protective film body and the blade body can be easily bonded and fixed.

[0006] Preferably, the material of the TPU layer is polyether aliphatic polyurethane or polycarbonate polyurethane, and the thickness of the TPU layer is 80-120 μm. By limiting the material of the TPU layer, the wear resistance, salt spray resistance, moisture and heat resistance and weather resistance of the protective film body can be guaranteed.

[0007] Preferably, the reinforcing layer is made of a nanofiber polyamide film layer, and glass fibers are evenly arranged on the reinforcing layer. The reinforcing layer can increase the strength of the protective film body, thereby effectively preventing the protective film body from being torn and damaged.

[0008] Preferably, the thickness of the reinforcing layer is 100-150 μm. By limiting the thickness of the reinforcing layer, the protective effect of the reinforcing layer on the reinforcing layer can be enhanced.

[0009] Preferably, the material of the repair layer is a polyvinyl chloride self-repairing film layer, and the thickness of the repair layer is 50-80 μm. Through the action of the repair layer, the protective film body can achieve self-repair when it receives minor damage, thereby effectively ensuring the service life of the protective film body.

[0010] Preferably, the material of the protective layer is a PET film layer, and the wear resistance of the protective film body can be effectively guaranteed through the effect of the protective layer.

[0011] Preferably, a semicircular convex strip is fixed to the upper end surface of the protective layer, and the convex strips are evenly spaced on the protective layer. Through the action of the convex strips, when external gravel contacts the protective layer, both buffering protection and dispersion of the impact force of the gravel can be achieved, thereby avoiding the vertical action of the gravel on the protective layer, thereby further increasing the protective effect of the protective film body.

[0012] Compared with the prior art, the beneficial effects of the utility model are: the TPU protective film for the leading edge of the wind turbine blade adopts an integrated molding structure as the overall wind turbine blade protective film, and the installation of the protective film can be facilitated by bonding, and in actual use, through the action of the protective layer and the convex strips, the protective effect of the wind turbine blade can be effectively achieved, avoiding external sand and gravel from contacting and colliding with the wind turbine blade and causing damage to the wind turbine blade protection, and with the action of the repair layer, the protective film can automatically repair small cracks under certain conditions, thereby effectively ensuring the service life of the protective film, and thus better meeting actual use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the protective film body of the utility model;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the blade body and the protective film body of the utility model;

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the reinforcement layer of the utility model.

[0016] In the figure: 1. Blade body; 2. Protective film body; 21. Installation glue layer; 22. TPU layer; 23. Reinforcement layer; 231. Glass fiber; 24. Repair layer; 25. Protective layer; 251. Raised strip; 3. Release paper. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 3 The utility model provides a technical solution: a TPU protective film for the leading edge of a wind turbine blade, comprising a blade body 1 and a protective film body 2. The outer side of the blade body 1 is covered with the protective film body 2. The protective film body 2 is composed of an installation glue layer 21, a TPU layer 22, a reinforcement layer 23, a repair layer 24 and a protective layer 25. The installation glue layer 21, the TPU layer 22, the reinforcement layer 23, the repair layer 24 and the protective layer 25 are fixed to each other from bottom to top into an integrated structure, and the installation glue layer 21 and the release paper 3 are bonded and fixed to each other.

[0019] The size of the installation adhesive layer 21 is equal to that of the protective film body 2, and the thickness of the installation adhesive layer 21 is 30-50 μm, and the material of the installation adhesive layer 21 is an acrylic pressure-sensitive adhesive layer; the material of the TPU layer 22 is polyether aliphatic polyurethane or polycarbonate polyurethane, and the thickness of the TPU layer 22 is 80-120 μm; the material of the reinforcement layer 23 is a nanofiber polyamide film layer, and glass fibers 231 are evenly arranged on the reinforcement layer 23; the thickness of the reinforcement layer 23 is 100-150 μm; the material of the repair layer 24 is a polyvinyl chloride self-repairing film layer, and the thickness of the repair layer 24 is 50-80 μm; the material of the protective layer 25 is a PET film layer; the upper end surface of the protective layer 25 is also fixed with a convex strip 251 of a semicircular structure, and the convex strips 251 are evenly distributed on the protective layer 25;

[0020] When using the TPU protective film for the leading edge of a wind turbine blade, Figure 1-Figure 3As shown, first, the surface of the blade body 1 is cleaned to ensure that the surface of the blade body 1 is clean, and then the installation glue layer 21 is separated from the release paper 3. With the action of the installation glue layer 21, the protective film body 2 and the blade body 1 can be conveniently bonded and fixed. In the bonding process, the bubbles between the protective film body 2 and the blade body 1 are scraped off by a rubber scraper to ensure the stability of the bonding and fixing of the protective film body 2 and the blade body 1, so that the installation of the protective film body 2 can be achieved. After the installation of the protective film body 2, in actual use, when the leading edge of the blade body 1 contacts with gravel due to the high linear speed, the protective layer 25 can achieve a buffering and protective effect. When the gravel contacts the convex strip 251, the surface of the convex strip 251 will have an arc-shaped structure, which can avoid the gravel from contacting the protective film body 2. The protective layer 25 contacts and collides vertically, thereby realizing the protective effect of the protective layer 25 and effectively ensuring the life of the protective layer 25. In actual use, through the action of the reinforcing layer 23 and the glass fiber 231, the strength of the protective film body 2 can be effectively guaranteed to prevent the protective film body 2 from being torn and damaged. Through the action of the repair layer 24, the protective film body 2 can be self-repaired when small cracks and damage occur, thereby ensuring the integrity of the protective film body 2, thereby effectively ensuring the protective effect of the protective film body 2 on the blade body 1. Through the action of the TPU layer 22, the wear resistance, salt spray resistance, moisture and heat resistance and weather resistance of the protective film body 2 can be guaranteed, thereby effectively extending the service life of the protective film body 2. This is the working principle of the TPU protective film for the leading edge of the wind turbine blade.

[0021] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A TPU protective film for the leading edge of a wind turbine blade, comprising a blade body (1) and a protective film body (2), wherein the outer side of the blade body (1) is covered with the protective film body (2), and characterized in that: The protective film body (2) is composed of a mounting adhesive layer (21), a TPU layer (22), a reinforcing layer (23), a repair layer (24) and a protective layer (25); the mounting adhesive layer (21), the TPU layer (22), the reinforcing layer (23), the repair layer (24) and the protective layer (25) are fixed to each other from bottom to top to form an integrated structure; the mounting adhesive layer (21) and the release paper (3) are bonded and fixed to each other.

2. The TPU protective film for the leading edge of a wind turbine blade according to claim 1, characterized in that: The size of the installation adhesive layer (21) is equal to the size of the protective film body (2), the thickness of the installation adhesive layer (21) is 30-50 μm, and the material of the installation adhesive layer (21) is an acrylic pressure-sensitive adhesive layer.

3. The TPU protective film for the leading edge of a wind turbine blade according to claim 1, characterized in that: The material of the TPU layer (22) is polyether aliphatic polyurethane or polycarbonate polyurethane, and the thickness of the TPU layer (22) is 80-120 μm.

4. The TPU protective film for the leading edge of a wind turbine blade according to claim 1, characterized in that: The material of the reinforcement layer (23) is a nanofiber polyamide film layer, and glass fibers (231) are evenly arranged on the reinforcement layer (23).

5. The TPU protective film for the leading edge of a wind turbine blade according to claim 1, characterized in that: The thickness of the reinforcement layer (23) is 100-150 μm.

6. The TPU protective film for the leading edge of a wind turbine blade according to claim 1, characterized in that: The material of the repair layer (24) is a polychlorinated self-repairing film layer, and the thickness of the repair layer (24) is 50-80 μm.

7. The TPU protective film for the leading edge of a wind turbine blade according to claim 1, characterized in that: The material of the protective layer (25) is a PET film layer.

8. The TPU protective film for the leading edge of a wind turbine blade according to claim 7, characterized in that: A convex strip (251) with a semicircular structure is also fixed to the upper end surface of the protective layer (25), and the convex strips (251) are distributed at equal intervals on the protective layer (25).

Images