Vertical shaft wind power generation blade formed by plastic extrusion

Abstract

The utility model provides a vertical shaft wind power generation blade formed by plastic extrusion, which comprises a blade main body component, a blade tail edge component, a main body reinforcing component, a tail edge reinforcing component and a switching positioning component, according to the blade, the blade main body component, the blade tail edge component, the main body reinforcing component and the tail edge reinforcing component are manufactured through integrated extrusion molding of glass fiber reinforced polypropylene, continuous and automatic production can be achieved, the blade has good size stability and surface quality, consistency and reliability of the blade are guaranteed, and the service life of the blade is prolonged. By arranging the cavity weight reduction structure and the reinforcing components, the blades are light while ensuring sufficient structural strength, the rotation efficiency and the power generation efficiency of the wind wheel are improved, meanwhile, the material cost and the transportation cost are reduced, the raw material glass fiber reinforced polypropylene has excellent corrosion resistance, weather resistance and recoverability, and the service life of the wind wheel is prolonged. The environment pollution can be reduced, and the sustainable development can be realized.

Description

Technical Field

[0001] The utility model relates to wind power generation equipment, in particular to a vertical axis wind power generation blade formed by plastic extrusion. Background Art

[0002] Patent document CN105697229A discloses a vertical-axis wind turbine blade, which consists of an inner blade surface and an outer blade surface. The inner and outer blade surfaces transitionally connect to form a parabolic blade. The outer surface has a blade opening that forms an airflow space, allowing air to flow into the blade through the opening, thereby increasing the static torque of the generator and improving the generator's self-starting performance. The blade also includes a blade airfoil leading edge and a blade airfoil tip. The blade airfoil leading edge is located at the transition connection between the inner and outer blade surfaces, and the blade airfoil tip is located at one end of the blade inner surface, with the blade inner surface close to the rotating shaft. This blade can be directly mounted on a vertical-axis wind turbine, improving the shortcomings of the vertical-axis wind turbine's self-starting performance. However, this type of wind turbine blade is generally made of aluminum alloy, which has the disadvantages of high weight and high cost. Therefore, it is necessary to optimize its structure to overcome the above-mentioned shortcomings. Utility Model Content

[0003] The purpose of the utility model is to provide a vertical axis wind power generation blade formed by plastic extrusion, so as to reduce the cost and ensure the structural strength.

[0004] The technical solution adopted by the present invention to solve its technical problems is:

[0005] A plastic extrusion-molded vertical axis wind power generation blade, comprising:

[0006] The main blade component is made of fiber-reinforced plastic extrusion and has a matching load-bearing structure and a cavity weight-reducing structure inside;

[0007] The blade trailing edge component is made of fiber reinforced plastic extrusion and is formed at the tail of the blade main component. The blade trailing edge component guides the airflow;

[0008] The main body reinforcement member is formed by extrusion of fiber reinforced plastic and is formed in the cavity weight reduction structure of the blade main body member. The main body reinforcement member is used to strengthen the structure of the blade main body member;

[0009] A trailing edge reinforcement member is formed by extrusion of fiber-reinforced plastic and is formed in the blade trailing edge member. The trailing edge reinforcement member structurally reinforces the blade trailing edge member.

[0010] The transfer positioning component is made of metal material and is installed in the matching bearing structure of the blade main body component. The blade main body component can be engaged with the rotating shaft through the transfer positioning component.

[0011] Specifically, the blade body component includes:

[0012] The wind-receiving substrate is formed by extrusion of glass fiber reinforced polypropylene, and its thickness gradually becomes thinner along the width direction of the wind-receiving substrate;

[0013] A matching core hole is formed at the thick end edge of the wind receiving substrate and penetrates the wind receiving substrate along the length direction, and its cross section is a polygonal structure;

[0014] The weight-reducing cavity is formed inside the wind-receiving substrate, and its thickness gradually becomes thinner along the width direction of the wind-receiving substrate.

[0015] The blade trailing edge components include:

[0016] The wind guide fold is extruded from glass fiber reinforced polypropylene and is formed on the thin end edge of the wind receiving substrate and deflected toward the leeward side of the wind receiving substrate. The wind guide fold guides the airflow to reduce air resistance.

[0017] The main reinforcement components include:

[0018] A group of inclined ribs is provided, each of which is located at the thick end of the weight-reducing cavity. The inclined ribs extend along the length of the wind-receiving substrate and are arranged sequentially along the width of the wind-receiving substrate. The inclined ribs reinforce the thick end of the wind-receiving substrate.

[0019] A group of vertical ribs are provided, each of which is located at the thin end of the weight-reducing cavity. They extend along the length direction of the wind-receiving substrate and are arranged sequentially along the width direction of the wind-receiving substrate. The thin end of the wind-receiving substrate is structurally reinforced by the vertical ribs.

[0020] The trailing edge reinforcement includes:

[0021] The trailing edge rib is formed at the end of the air guide fold, extends along the length direction of the air guide fold, and protrudes toward the outside of the air guide fold. The trailing edge rib strengthens the structure of the air guide fold.

[0022] The transfer positioning component includes:

[0023] The transfer core rod is made of aluminum alloy prism, and its cross section is a polygonal structure, and is adapted to the shape of the matching core hole. The transfer core rod is inserted into the matching core hole, so that the wind-receiving substrate is connected to the rotating shaft through the transfer core rod.

[0024] The advantages of the present invention are:

[0025] The blade is made of glass fiber reinforced polypropylene through one-piece extrusion molding to produce the blade main component, blade trailing edge component, main reinforcement component and trailing edge reinforcement component, which can realize continuous and automated production, so that it has good dimensional stability and surface quality, which is conducive to ensuring the consistency and reliability of the blade. By setting up cavity weight-reducing structures and reinforcement components, the blade can achieve lightweight while ensuring sufficient structural strength, which helps to improve the rotation efficiency and power generation efficiency of the wind wheel, while reducing material costs and transportation costs. Its raw material, glass fiber reinforced polypropylene, has excellent corrosion resistance, weather resistance and recyclability, which helps to reduce environmental pollution and achieve sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the plastic extrusion-molded vertical-axis wind power generation blade proposed in the present invention;

[0027] Figure 2 This is an exploded view of the blade;

[0028] Figure 3 is a schematic diagram of the end face structure of the blade;

[0029] Figure 4 yes Figure 2 A magnified close-up of point A in the middle;

[0030] Figure 5 yes Figure 3 A close-up of point B in the middle. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents selected embodiments of the present invention. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 5As shown, the plastic extrusion-molded vertical axis wind power generation blade proposed in the present invention includes a blade main body component, a blade trailing edge component, a main body reinforcement component, a trailing edge reinforcement component and a transfer positioning component. The blade main body component is extruded by fiber reinforced plastic, and has a matching load-bearing structure and a cavity weight reduction structure inside. The blade trailing edge component is extruded by fiber reinforced plastic, and is formed at the tail of the blade main body component. The airflow is guided by the blade trailing edge component. The main body reinforcement component is extruded by fiber reinforced plastic, and is formed in the cavity weight reduction structure of the blade main body component. The blade main body component is structurally reinforced by the main body reinforcement component. The trailing edge reinforcement component is extruded by fiber reinforced plastic, and is formed in the blade trailing edge component. The blade trailing edge reinforcement component is structurally reinforced by the trailing edge reinforcement component. The transfer positioning component is made of metal material, and is installed in the matching load-bearing structure of the blade main body component. The blade main body component can be engaged with the rotating shaft through the transfer positioning component.

[0033] In this embodiment, the main blade component includes a wind-receiving substrate 110, a matching core hole 1202 and a weight-reducing cavity 130. The wind-receiving substrate is extruded from glass fiber reinforced polypropylene, and its thickness gradually becomes thinner along the width direction of the wind-receiving substrate. The matching core hole is formed at the thick end edge of the wind-receiving substrate and penetrates the wind-receiving substrate along the length direction. Its cross-section is a polygonal structure. The weight-reducing cavity is formed inside the wind-receiving substrate, and its thickness gradually becomes thinner along the width direction of the wind-receiving substrate.

[0034] The trailing edge component of the blade includes an air guide fold 200, which is extruded from glass fiber reinforced polypropylene. It is formed on the thin end edge of the wind-receiving base sheet and is bent toward the leeward side of the wind-receiving base sheet. The airflow is guided by the air guide fold to reduce air resistance. The thickness of the air guide fold is less than the thickness of the thin end of the wind-receiving base sheet.

[0035] The main reinforcement member includes an oblique rib plate 310 and a vertical rib plate 320. A group of oblique rib plates are provided, and each oblique rib plate is located at the thick end of the weight-reducing cavity, extending along the length direction of the wind-receiving substrate and arranged sequentially along the width direction of the wind-receiving substrate. The oblique rib plates structurally reinforce the thick end of the wind-receiving substrate. A group of vertical rib plates are provided, and each vertical rib plate is located at the thin end of the weight-reducing cavity, extending along the length direction of the wind-receiving substrate and arranged sequentially along the width direction of the wind-receiving substrate. The vertical rib plates structurally reinforce the thin end of the wind-receiving substrate. An angle is formed between adjacent oblique rib plates, and adjacent vertical rib plates are parallel to each other.

[0036] The trailing edge reinforcement member includes a trailing edge rib 400 formed at the end of the air guide flap. The trailing edge rib extends along the length of the air guide flap and protrudes toward the outside of the air guide flap. The trailing edge rib reinforces the structure of the air guide flap.

[0037] The transfer positioning component includes a transfer core rod 500, which is made of an aluminum alloy prism with a polygonal cross section that matches the shape of the matching core hole. The transfer core rod is inserted into the matching core hole so that the wind-receiving substrate is connected to the rotating shaft through the transfer core rod.

[0038] In this embodiment, structures such as the wind receiving base plate, the wind guiding folding plate, the oblique rib plate, the vertical rib plate and the trailing edge rib are integrally formed through an extrusion process.

[0039] In the description of the present utility model, it should be noted that when terms such as "upper", "lower", "inner", "outer", "left", and "right" indicate an orientation or positional relationship, they should be understood as being based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, when terms such as "first" and "second" appear, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, terms such as "installation", "setting", and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two elements. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

Claims

1. A plastic extrusion-molded vertical axis wind power generation blade, characterized in that: include: The main blade component is made of fiber-reinforced plastic extrusion and has a matching load-bearing structure and a cavity weight-reducing structure inside; The blade trailing edge component is made of fiber reinforced plastic extrusion and is formed at the tail of the blade main component. The blade trailing edge component guides the airflow; The main body reinforcement member is formed by extrusion of fiber reinforced plastic and is formed in the cavity weight reduction structure of the blade main body member. The main body reinforcement member is used to strengthen the structure of the blade main body member; A trailing edge reinforcement member is formed by extrusion of fiber-reinforced plastic and is formed in the blade trailing edge member. The trailing edge reinforcement member structurally reinforces the blade trailing edge member. The transfer positioning component is made of metal material and is installed in the matching bearing structure of the blade main body component. The blade main body component can be engaged with the rotating shaft through the transfer positioning component.

2. The plastic extrusion-molded vertical axis wind power generation blade according to claim 1, characterized in that: The main blade components include: The wind-receiving substrate is formed by extrusion of glass fiber reinforced polypropylene, and its thickness gradually becomes thinner along the width direction of the wind-receiving substrate; A matching core hole is formed at the thick end edge of the wind receiving substrate and penetrates the wind receiving substrate along the length direction, and its cross section is a polygonal structure; The weight-reducing cavity is formed inside the wind-receiving substrate, and its thickness gradually becomes thinner along the width direction of the wind-receiving substrate.

3. The plastic extrusion-molded vertical axis wind power generation blade according to claim 2, characterized in that: The blade trailing edge components include: The wind guide fold is extruded from glass fiber reinforced polypropylene and is formed on the thin end edge of the wind receiving substrate and deflected toward the leeward side of the wind receiving substrate. The wind guide fold guides the airflow to reduce air resistance.

4. The plastic extrusion-molded vertical axis wind power generation blade according to claim 2, characterized in that: The main reinforcement components include: A group of inclined ribs is provided, each of which is located at the thick end of the weight-reducing cavity. The inclined ribs extend along the length of the wind-receiving substrate and are arranged sequentially along the width of the wind-receiving substrate. The inclined ribs reinforce the thick end of the wind-receiving substrate. A group of vertical ribs are provided, each of which is located at the thin end of the weight-reducing cavity. They extend along the length direction of the wind-receiving substrate and are arranged sequentially along the width direction of the wind-receiving substrate. The thin end of the wind-receiving substrate is structurally reinforced by the vertical ribs.

5. The plastic extrusion-molded vertical axis wind power generation blade according to claim 3, characterized in that: The trailing edge reinforcement includes: The trailing edge rib is formed at the end of the air guide fold, extends along the length direction of the air guide fold, and protrudes toward the outside of the air guide fold. The trailing edge rib strengthens the structure of the air guide fold.

6. The plastic extrusion-molded vertical axis wind power generation blade according to claim 2, characterized in that: The transfer positioning component includes: The transfer core rod is made of aluminum alloy prism, and its cross section is a polygonal structure, and is adapted to the shape of the matching core hole. The transfer core rod is inserted into the matching core hole, so that the wind-receiving substrate is connected to the rotating shaft through the transfer core rod.

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