Method for regenerating H-shaped vertical-axis breeze generator blade from waste wind power blade

Abstract

The invention discloses a method for regenerating an H-shaped vertical-axis breeze generator blade from a waste wind power blade, and relates to the field of resource recycling, the H-shaped vertical-axis breeze generator blade is manufactured by cutting a formed section of the waste wind power blade, and an epoxy resin glass fiber reinforced plastic sandwich panel of the waste wind power blade has the characteristics of light weight, high strength and corrosion resistance; the glass fiber reinforced plastic sandwich plate of the waste wind power blade is used for replacing aluminum alloy to produce the H-shaped vertical-axis breeze generator blade, so that the waste wind power blade is recycled, the weight of the H-shaped vertical-axis breeze generator blade is reduced under the condition that the strength of the H-shaped vertical-axis breeze generator blade is guaranteed, loads of a supporting structure and a transmission system are reduced, and the service life of the H-shaped vertical-axis breeze generator blade is prolonged. The blades of the H-shaped vertical-axis breeze generator are easier to start and accelerate at a lower wind speed, so that the blades can operate in a wider wind speed range; the wind energy capturing efficiency is improved, and the waste wind power blade obtains the second life, so that the cyclic utilization of resources is realized, and the sustainable development is promoted.

Description

Technical Field

[0001] The invention relates to the field of recycling of waste wind turbine blades, and in particular to a method for regenerating H-shaped vertical axis micro-wind generator blades from waste wind turbine blades. Background Art

[0002] With the rapid development of the wind power industry, a large number of wind turbine blades are facing the problem of scrapping after reaching their service life. At present, it is difficult to dispose of scrapped wind turbine blades, which often causes waste of resources and environmental pollution. These waste wind turbine blades are made of high-performance epoxy resin (epoxy resin is a high-strength, high-performance resin) fiberglass material, which has the characteristics of light weight, high strength, light weight, corrosion resistance and large size. These waste wind turbine blades are composed of epoxy resin fiberglass blade roots, main beams and epoxy resin fiberglass core boards accounting for 90%. The epoxy resin fiberglass core board is composed of epoxy resin fiberglass skin, sandwich panels with balsa wood (balsa wood epoxy fiberglass sandwich panels are about 700kg / m3) and plastic foam (plastic foam epoxy fiberglass sandwich panels are about 400kg / m3) as sandwich panels. In order to ensure stable operation and high wind energy utilization under high wind speed conditions, horizontal axis wind turbine blades are made of high-strength, lightweight epoxy resin fiberglass and complex structural design to achieve high-strength and lightweight performance. They have the advantages of light weight, high strength and corrosion resistance. However, this epoxy resin fiberglass material has the disadvantage of being difficult to degrade due to its special material quality, which causes great difficulties in recycling. It is considered by the industry to be a special material that "will not rot or decompose for thousands of years". Currently, a large number of wind turbine blades are facing retirement, and the recycling and reuse of waste wind turbine blades has become a problem.

[0003] Current international and domestic recycling methods for used wind turbine blades and their drawbacks

[0004] First, it wastes high-quality resources; second, it consumes a lot of energy during the recycling process; and third, it is impossible to make high-value reuse.

[0005] 1. Mechanical treatment: Cut the blades into small pieces by mechanical force, and then crush them into short fibers and powder, which can be used as epoxy resin fiberglass fillers or screened out fibers for anti-cracking materials of cement components. However, it will generate a lot of dust and noise, and the processing efficiency is low.

[0006] Disadvantages: A large amount of dust and noise will be generated during the mechanical processing process, and the processing efficiency is low, the recycling cost is high, and resources are wasted.

[0007] 2. Landfill treatment: The retired wind turbine blades are directly buried underground. This is the simplest and crudest treatment method. No materials can be recycled, and the fiberglass material is difficult to degrade. In the long run, it may pollute the soil and groundwater.

[0008] Disadvantages: Landfill disposal will lead to a waste of land resources, and FRP materials are difficult to degrade. In the long run, it may pollute the soil and groundwater and waste resources.

[0009] 3. Chemical dissolution treatment: Use chemicals to dissolve the epoxy resin fiberglass material in the blades to recover useful materials. This method requires the use of a large amount of chemicals, which may cause secondary pollution to the environment and has high treatment costs.

[0010] Disadvantages: Chemical dissolution treatment requires the use of a large amount of chemical agents, which may cause secondary pollution to the environment, and the treatment cost is high, making it difficult to form large-scale treatment and wasting resources.

[0011] 4. Incineration: The leaves are burned to generate heat for power generation. This method will produce harmful gases and secondary pollution, and has high requirements for incineration equipment and high processing costs.

[0012] Disadvantages: Harmful gases and secondary pollution will be produced during the incineration process, and the incineration equipment requirements are high, the processing cost is high, and resources are wasted.

[0013] 5. Pyrolysis: The leaves are decomposed into three forms, gas, liquid and solid, at high temperature to recover useful materials. This method requires high temperatures and special equipment, has high processing costs, and may produce harmful gases during the processing.

[0014] Disadvantages: Pyrolysis treatment requires higher temperatures and special equipment, resulting in higher processing costs. In addition, harmful gases may be produced during the process, wasting resources.

[0015] 6. Co-processing in cement kilns: Use the blades as fuel or raw materials in cement production to achieve resource utilization and reduce waste.

[0016] The current H vertical axis generator blades are made of aluminum alloy, which is high in cost, heavy in specific gravity, and has poor corrosion resistance. Summary of the invention

[0017] Aiming at the existing waste wind turbine blade recycling methods and their drawbacks, the present invention invents a method for producing H-shaped vertical axis micro-wind generator blades by using waste wind turbine blades instead of aluminum alloy to solve the problem of recycling and reusing waste wind turbine blades.

[0018] Compared with horizontal axis wind turbines, H-type vertical axis micro-wind generators have the advantages of simple and compact structure, easy installation and maintenance, no restrictions on wind direction, and low noise. In addition, vertical axis wind turbines are more suitable for use in complex terrains such as cities and mountainous areas, and the strength requirements are relatively low. Therefore, the waste wind turbine blades are transformed into H-type vertical axis micro-wind generator blades, which are light in weight and can not only meet the performance requirements of H-type vertical axis micro-wind generator blades, but also give the waste wind turbine blades a second life and extend the service life of the blades. Especially in a breeze environment, the vertical axis generator has a higher power generation efficiency and is suitable for areas with lower wind speeds. Vertical axis wind power technology, with its advantages such as insensitivity to wind direction changes and low operating noise, is gradually becoming a new favorite in the wind power field. Remanufacturing gives new value to waste wind turbine blades and realizes sustainable utilization of resources.

[0019] Vertical axis wind power generation is a clean and sustainable form of energy. Vertical axis wind power generation technology mainly relies on vertical axis wind turbines, which can generate electricity with just a breeze. This technology is particularly suitable for distributed power generation in cities, rural areas, remote areas, agricultural fields, homes and residences, traffic supervision, telecommunications base stations, toll stations, outdoor lighting, educational institutions, small businesses, eco-tourism and camping areas, and the market size is constantly expanding.

[0020] In view of the above problems, the present invention aims to provide an innovative method for recycling waste wind turbine blades, which converts waste wind turbine blades into blades suitable for H-type vertical axis wind turbines by combining precise cutting, bonding, CNC gantry milling machine processing, and winding processes. This method can not only effectively solve the problem of handling waste wind turbine blades, but also make full use of their material properties, maximize the utilization of resources, reduce costs, reduce carbon emissions, and reduce environmental pollution, which meets the requirements of sustainable development.

[0021] The epoxy resin fiberglass sandwich panels of waste wind turbine blades are used instead of aluminum alloy to make H-shaped vertical axis breeze generator blades, which reduces the weight and production cost of the blades.

[0022] Most of the waste wind turbine blades are made of sandwich panels with balsa wood and plastic foam as the core material and epoxy resin fiberglass as the skin. They have the advantages of high strength, light weight (balsa wood epoxy resin fiberglass sandwich panels are about 700kg / m3, plastic foam epoxy resin fiberglass sandwich panels are about 400kg / m3) and corrosion resistance. The waste wind turbine blades are precisely cut to obtain profiles that meet the specifications of H-type vertical axis micro-wind generator blades, and the blade blank shape requirements are achieved through bonding. The blanks are processed with a CNC gantry milling machine to meet the shape requirements of the vertical axis micro-wind generator blades. After being strengthened by epoxy resin fiberglass winding, the blade strength and anti-aging requirements are achieved, realizing the high-value reuse of waste wind turbine blades. The purpose is to regenerate waste wind turbine blades into H-type vertical axis micro-wind generator blades with economic value and environmental benefits in an efficient and environmentally friendly way, thereby realizing the recycling of resources, reducing carbon emissions, and promoting sustainable development.

[0023] To achieve the above objectives, the present invention is implemented through the following technical solutions: A method for regenerating H-shaped vertical axis micro-wind generator blades from waste wind turbine blades, comprising the following steps:

[0024] Use special cutting equipment to separate the epoxy resin fiberglass sandwich panels of waste wind turbine blades from the main beam and blade root of the blade, and cut the epoxy resin fiberglass sandwich panels into the required profiles of H-shaped vertical axis breeze generator blades; assemble and bond the epoxy resin fiberglass sandwich panel profiles into H-shaped vertical axis breeze generator blade shape blanks; use a CNC gantry milling machine to process the epoxy resin fiberglass sandwich panel blanks into the shape of H-shaped vertical axis breeze generator blades that efficiently capture wind energy; install nut embedded parts and plugs, and then wrap a layer of high-performance, corrosion-resistant epoxy resin fiberglass material skin, and then perform surface polishing to enhance the strength and corrosion resistance and UV resistance of the H-shaped vertical axis breeze generator blades.

[0025] (a) Determine the cutting plan according to the specifications and shape requirements of the H-shaped vertical axis micro-wind generator blades and the shape of the epoxy resin fiberglass sandwich panels of the waste wind turbine blades;

[0026] (b) firstly, the main beam and blade root of the waste wind turbine blade are cut and separated from the epoxy resin glass fiber reinforced plastic sandwich panel shell by using a cutting device, and then the epoxy resin glass fiber reinforced plastic sandwich panel is precisely cut by using a cutting device to obtain the epoxy resin glass fiber reinforced plastic sandwich panel profile required for the H-shaped vertical axis micro-wind generator blade;

[0027] (c) according to the specification requirements of the H-shaped vertical axis micro-wind generator blade, the cut waste wind turbine blade epoxy resin fiberglass sandwich panel profiles are matched and combined;

[0028] (d) Use special equipment to grind the assembled epoxy resin fiberglass sandwich panel profile (the part to be bonded) into a bonding surface with a uniform rough texture;

[0029] (e) assembling and bonding the epoxy resin fiberglass sandwich panels with polished bonding surfaces to form an H-shaped vertical axis micro-wind generator blade blank;

[0030] (f) pressurizing and curing the bonded H-shaped vertical axis micro-wind generator blade blank;

[0031] (g) Use a CNC gantry milling machine to precisely process the cured epoxy resin fiberglass sandwich panel blank to make its shape meet the requirements of the H-shaped vertical axis micro-wind generator blade;

[0032] (h) embedding the fixed nut embedded parts connected to the hub bracket in the processed blades;

[0033] (i) Install plugs at both ends;

[0034] (j) wrapping a layer of epoxy resin fiberglass skin on the processed H-shaped vertical axis micro-wind generator blade blank;

[0035] (k) Polishing and spraying of H-shaped vertical axis micro wind generator blades with wrapped skin;

[0036] Preferably, the waste wind turbine blades are precisely cut and separated.

[0037] Preferably, the epoxy resin fiberglass sandwich panels of waste wind turbine blades are precisely cut.

[0038] Preferably, the epoxy resin fiberglass sandwich panels of waste wind turbine blades are bonded into H-shaped blade vertical axis blade blanks.

[0039] Preferably, the blank is machined into shape using a CNC gantry milling machine.

[0040] Preferably, nut embedded parts and plugs on both sides are installed on the blade blank.

[0041] Preferably, the epoxy resin fiberglass material skin is wrapped.

[0042] Preferably, the connection process includes bonding and winding.

[0043] Preferably, after step (j), the blade is subjected to surface treatment, including coating with UV protection and anti-corrosion coating, and performing necessary smoothing treatment to improve the aerodynamic performance and aesthetics of the blade;

[0044] Preferably, the waste wind turbine blades are mainly composed of epoxy resin fiberglass composite materials with epoxy resin fiberglass material skin and balsa wood and PVC foam as core materials.

[0045] Preferably, the H-shaped vertical axis micro-wind generator blade is mainly composed of an epoxy resin fiberglass composite material with an epoxy resin fiberglass skin and balsa wood and plastic foam as a core material.

[0046] Preferably, the H-shaped vertical axis breeze generator blade is suitable for distributed power generation in cities, villages, remote areas, agricultural fields, homes and residences, traffic supervision, telecommunication base stations, toll stations, outdoor lighting, educational institutions, small businesses, eco-tourism and camping areas.

[0047] Beneficial Effects

[0048] The present invention provides a method for regenerating H-shaped vertical axis micro-wind generator blades from waste wind turbine blades, which has the following beneficial effects:

[0049] 1. It solves the problem of recycling and reusing waste wind turbine blades.

[0050] 1. It realizes the high-value resource recycling of waste wind turbine blades, giving waste wind turbine blades a second life and secondary utilization, extending the service life of the blades, improving resource utilization, reducing environmental pollution, reducing a large amount of resource waste, avoiding the disadvantages of current pyrolysis, chemical solvents, incineration, and mechanical recycling methods, realizing the recycling of waste resources, reducing dependence on primary resources, and solving the problem of handling waste wind turbine blades.

[0051] 2. The blades are made of balsa wood and plastic foam composite sandwich panels, replacing aluminum alloy profiles, saving primary resources.

[0052] 3. Reduce noise: The epoxy resin composite sandwich panel blades are light in weight and relatively less noisy during operation. This is an important advantage for wind power generation installed in residential areas, commercial areas and other areas with high noise requirements;

[0053] 4. Strong performance adaptability: The structure of large waste wind turbine blades is designed to adapt to high-power and high-wind-speed operation. The epoxy resin composite sandwich panel can meet the performance requirements of H-type vertical axis micro-wind generator blades;

[0054] 5. Strength and durability: Wind turbine blades must meet strict quality and performance requirements during design and manufacturing. They are usually made of composite panels with high-strength epoxy resin fiberglass reinforced plastic (GFRP) or carbon fiber reinforced plastic (CFRP) as the skin, balsa wood and plastic foam core material. These materials are lightweight, high-strength and corrosion-resistant, and are suitable for use in outdoor environments.

[0055] 2. Composite sandwich panels can reduce the weight of blades and achieve the following effects

[0056] 1. Increase the starting wind speed: Reduced blade weight means that a lower wind speed is required to start power generation, which increases the available wind speed range of the wind turbine and improves its power generation efficiency in low wind speed areas.

[0057] 2. Reduce bearing wear: Lighter blades put less pressure on bearings, which can reduce bearing wear and extend maintenance cycles and service life.

[0058] 3. Improve efficiency: Reducing blade weight can reduce the moment of inertia, making the wind turbine respond more quickly and sensitively to changes in wind speed, thereby improving the overall energy capture efficiency.

[0059] 4. Reduce costs: The blades are one of the heaviest parts of a wind turbine. By reducing the weight of the blades, the overall manufacturing cost as well as the transportation and installation costs can be reduced.

[0060] 5. Enhanced reliability: Lighter blades are subjected to less stress in strong winds, reducing the risk of damage due to extreme weather conditions, thereby improving the reliability of the system.

[0061] 6. Reduced land use: Due to their structural characteristics, VAWTs can usually be arranged more compactly, and reducing the weight of the blades helps to further optimize land use efficiency.

[0062] 7. Environmentally friendly: Making lighter blades may require the use of less material, which helps reduce resource consumption and environmental impact during the production process.

[0063] 8. Easy maintenance: Lighter blades make maintenance work easier, such as replacing damaged blades.

[0064] 9. Improved dynamic characteristics: Reducing the weight of the blades can reduce the natural frequency of the system, help avoid resonance with the frequency of the wind, and improve the dynamic characteristics of the wind turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a schematic diagram of the structure of the H-type vertical axis breeze generator blade of the present invention.

[0066] Figure 2 It is a schematic diagram of the structure of the H-type vertical axis breeze generator blade of the present invention.

[0067] Figure 3 It is a schematic diagram of the structure of the waste wind turbine blades of the present invention. DETAILED DESCRIPTION

[0068] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] See also Figure 1-3 The present invention provides a technical solution: a method for regenerating H-shaped vertical axis micro-wind generator blades from waste wind turbine blades, comprising the following steps:

[0070] (a) Determine the cutting plan based on the specifications and shape requirements of the H-shaped vertical axis micro-wind generator blades and the shape of the epoxy resin fiberglass sandwich panels of the waste wind turbine blades;

[0071] (a) Determine the cutting plan according to the specifications and shape requirements of the H-shaped vertical axis micro-wind generator blades and the shape of the epoxy resin fiberglass sandwich panels of the waste wind turbine blades;

[0072] (b) firstly, the main beam and blade root of the waste wind turbine blade are cut and separated from the epoxy resin glass fiber reinforced plastic sandwich panel shell by using a cutting device, and then the epoxy resin glass fiber reinforced plastic sandwich panel is precisely cut by using a cutting device to obtain the epoxy resin glass fiber reinforced plastic sandwich panel profile required for the H-shaped vertical axis micro-wind generator blade;

[0073] (c) according to the specification requirements of the H-shaped vertical axis micro-wind generator blade, the cut waste wind turbine blade epoxy resin fiberglass sandwich panel profiles are combined;

[0074] (d) Use special equipment to grind the assembled epoxy resin fiberglass sandwich panel profile (the part to be bonded) into a bonding surface with a uniform rough texture;

[0075] (e) assembling and bonding the epoxy resin fiberglass sandwich panels with polished bonding surfaces to form an H-shaped vertical axis micro-wind generator blade blank;

[0076] (f) pressurizing and curing the bonded H-shaped vertical axis micro-wind generator blade blank;

[0077] (g) Use a CNC gantry milling machine to precisely process the cured epoxy resin fiberglass sandwich panel blank to make its shape meet the requirements of the H-shaped vertical axis micro-wind generator blade;

[0078] (h) embedding the fixed nut embedded parts connected to the hub bracket in the processed blades;

[0079] (i) Add plugs to both ends of the H-shaped vertical axis micro-wind generator blade blank;

[0080] (j) wrapping a layer of epoxy resin fiberglass skin around the processed H-shaped vertical axis micro-wind generator blade blank;

[0081] (k) Polishing and spraying of H-shaped vertical axis micro wind generator blades with wrapped skin;

[0082] By adopting the above technical solution, the waste wind turbine blades are cut, processed and surface treated to meet the requirements of H-type vertical axis breeze generator blades. The epoxy resin fiberglass material skin is used to improve the strength and durability of the blades. After surface treatment, it is ensured that the blades can capture wind energy efficiently.

[0083] By adopting the above technical solution, the blades are cut according to the characteristics of different parts, so that the shape of the blades is more reasonable and meets the needs of high-performance wind energy capture of H-type vertical axis wind turbine blades.

[0084] This embodiment is further configured such that the process includes bonding, CNC machining, winding, etc.

[0085] By adopting the above technical solution, the most suitable connection method is selected according to the specific situation to ensure the strength and reliability of the blade connection.

[0086] This embodiment is further configured such that, after step (j), the blade is subjected to surface treatment, including coating with an anti-ultraviolet coating and performing necessary smoothing treatment to improve the aerodynamic performance and aesthetics of the blade;

[0087] The present embodiment is further configured such that the waste wind turbine blades are mainly composed of a composite board material of glass fiber reinforced plastic and carbon fiber reinforced plastic as skins, and balsa wood and plastic foam as epoxy resin glass fiber reinforced plastic sandwich panels.

[0088] The present embodiment is further configured such that the H-shaped vertical axis breeze generator blade is suitable for distributed power generation in cities, villages, remote areas, agricultural fields, homes and residences, traffic supervision, telecommunication base stations, toll stations, outdoor lighting, educational institutions, small businesses, eco-tourism and camping areas.

[0089] By adopting the above technical solutions, the application scenarios of the regenerated blades are clarified, their scope of use is broadened, and their applicability in different fields is improved.

[0090] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process.

[0091] Embodiment: First, a cutting plan is formulated according to the shape of the waste wind turbine blades and the requirements of the H-type vertical axis micro-wind generator blades. Taking into account the structural characteristics of the waste wind turbine blades, the parts and size specifications that need to be cut are determined, and the epoxy resin fiberglass sandwich panels of the waste wind turbine blades are cut into profiles using cutting equipment to obtain the epoxy resin fiberglass sandwich panel profiles required for the H-type vertical axis micro-wind generator blades. The cut epoxy resin fiberglass sandwich panel profiles are assembled and bonded, and the assembled epoxy resin fiberglass sandwich panel profiles are finely processed using a CNC gantry milling machine to form a shape that meets the design requirements of the H-type vertical axis micro-wind generator blades. A layer of epoxy resin fiberglass material skin is wrapped around the processed H-type vertical axis blades, the blades are surface polished, coated with an anti-ultraviolet coating, and necessary smoothing treatment is performed to improve the aerodynamic performance and aesthetics of the blades.

[0092] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0093] 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 method for regenerating H-shaped vertical axis micro-wind generator blades from waste wind turbine blades, characterized in that: The following steps are involved: (a) Determine the cutting plan based on the specifications and shape requirements of the H-shaped vertical axis micro-wind generator blades and the shape of the epoxy resin fiberglass sandwich panels of the waste wind turbine blades; (b) firstly, the main beam and blade root of the waste wind turbine blade are cut and separated from the epoxy resin glass fiber reinforced plastic sandwich panel shell by using a cutting device, and then the epoxy resin glass fiber reinforced plastic sandwich panel is precisely cut by using a cutting device to obtain the epoxy resin glass fiber reinforced plastic sandwich panel profile required for the H-shaped vertical axis micro-wind generator blade; (c) according to the specification requirements of the H-shaped vertical axis micro-wind generator blade, the cut waste wind turbine blade epoxy resin fiberglass sandwich panel profiles are combined; (d) Use special equipment to grind the part of the epoxy resin fiberglass sandwich panel profile that needs to be bonded to produce a bonding surface with a uniform rough texture; (e) assembling and bonding the epoxy resin fiberglass sandwich panels with polished bonding surfaces to form an H-shaped vertical axis micro-wind generator blade blank; (f) pressurizing and curing the bonded H-shaped vertical axis micro-wind generator blade blank; (g) Use a CNC gantry milling machine to precisely process the cured epoxy resin fiberglass sandwich panel blank to make its shape meet the requirements of the H-shaped vertical axis micro-wind generator blade; (h) embedding the fixed nut embedded parts connected to the hub bracket in the processed blades; (i) Install plugs at both ends; (j) wrapping a layer of epoxy resin fiberglass skin around the processed H-shaped vertical axis micro-wind generator blade blank; (k) Polishing and spraying of the surface of H-shaped vertical axis micro-wind generator blades wrapped with epoxy resin fiberglass skin.

2. The method for regenerating H-shaped vertical axis micro-wind generator blades from waste wind turbine blades according to claim 1, characterized in that: After step (k), the blade is subjected to surface treatment, including coating with UV protection and anti-corrosion coating, and performing smoothing treatment to improve the aerodynamic performance and aesthetics of the blade.

3. The method for regenerating H-shaped vertical axis micro-wind generator blades from waste wind turbine blades according to claim 1, characterized in that: The waste wind turbine blades are mainly composed of epoxy resin glass fiber reinforced plastic skins and epoxy resin glass fiber reinforced plastic sandwich panels with balsa wood and plastic foam as cores.

4. The method for regenerating H-shaped vertical axis micro-wind generator blades from waste wind turbine blades according to claim 1, characterized in that: The H-shaped vertical axis breeze generator blade is suitable for distributed power generation in cities, villages, remote areas, agricultural fields, homes and residences, traffic supervision, telecommunication base stations, toll booths, outdoor lighting, educational institutions, small businesses, eco-tourism and camping areas.

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