Innovative wind power generation mixed tower structure and manufacturing method thereof

Abstract

The invention discloses an innovative wind power generation mixed tower structure which comprises an inner-layer concrete structure, a middle-layer fiber reinforced composite material structure is fixedly connected to the outer wall of the inner-layer concrete structure, and an outer-layer steel structure is fixedly connected to the outer wall of the middle-layer fiber reinforced composite material structure. Information acquisition units are arranged between the inner-layer concrete structure and the middle-layer fiber reinforced composite material structure as well as between the middle-layer fiber reinforced composite material structure and the outer-layer steel structure, the information acquisition units are connected with a data acquisition unit through wires, and the data acquisition unit is connected with a visual display screen through a wire. The invention further discloses a manufacturing method of the innovative wind power generation mixed tower structure. According to the innovative wind power generation mixed tower structure and the manufacturing method thereof, the problems that an existing wind power generation mixed tower is insufficient in structural design and manufacturing method, the mixed tower part is prone to cracking, and the operation state of the mixed tower cannot be monitored in the operation process are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind power generation, and in particular relates to an innovative wind power generation mixed tower structure, and also relates to a manufacturing method of the innovative wind power generation mixed tower structure. Background Art

[0002] In the wind power industry, the tower is the key structure that supports the wind turbine generator set. Traditional wind power towers are mainly of two types: steel towers and concrete towers. Steel towers have the advantages of light weight and easy installation, but they are more expensive and susceptible to corrosion; concrete towers are relatively low in cost and have better corrosion resistance, but they are heavy and difficult to transport and install. In order to overcome these problems, wind power hybrid towers came into being, which combine the advantages of concrete and steel and have better comprehensive performance.

[0003] However, the existing wind power hybrid tower has many shortcomings in structural design and manufacturing methods, such as single structural design, stress concentration and lack of reasonable buffer transition, lack of effective internal monitoring means, inability to monitor the operating status of the wind power hybrid tower, and cracks are prone to occur in the hybrid tower part; prefabrication technology is immature, the degree of modularization is insufficient, the on-site assembly efficiency is low, and the production management is not intelligent enough. Summary of the invention

[0004] The purpose of the present invention is to provide an innovative wind power generation hybrid tower structure, which solves the shortcomings of the existing wind power generation hybrid tower in structural design and manufacturing methods, the problem that cracks are easily generated in the hybrid tower part and the operating status of the hybrid tower cannot be monitored during operation.

[0005] Another object of the present invention is to provide an innovative method for manufacturing a wind power generation hybrid tower structure.

[0006] The technical solution adopted by the present invention is an innovative wind power generation hybrid tower structure, including an inner concrete structure, an intermediate fiber reinforced composite structure fixedly connected to the outer wall of the inner concrete structure, an outer steel structure fixedly connected to the outer wall of the intermediate fiber reinforced composite structure, information collection units are provided between the inner concrete structure and the intermediate fiber reinforced composite structure and between the intermediate fiber reinforced composite structure and the outer steel structure, the information collection unit is connected to a data collector via wires, and the data collector is connected to a visual display screen via wires.

[0007] The present invention is also characterized in that:

[0008] The inner layer concrete structure is fixed to the middle layer fiber reinforced composite material structure through an adhesive.

[0009] The adhesive is any one of epoxy resin adhesive, polyurethane adhesive or acrylate adhesive.

[0010] The middle layer fiber reinforced composite material structure adopts a carbon fiber composite material structure or a glass fiber composite material structure.

[0011] The outer steel structure is a cylinder made of rolled or welded steel plates, and the outer wall of the cylinder is coated with a hot-dip galvanized anti-corrosion layer or an epoxy zinc-rich primer coating anti-corrosion layer.

[0012] The outer steel structure is fixedly connected to the middle fiber reinforced composite material structure and the inner concrete structure through a plurality of connectors.

[0013] The connector is any one of a mechanical anchor connector, a bonding anchor connector or a pre-embedded connector.

[0014] The information acquisition unit comprises a strain sensor, a displacement sensor, a temperature sensor and a vibration sensor, and the strain sensor, the displacement sensor, the temperature sensor and the vibration sensor are respectively connected to the data acquisition device through wires.

[0015] Another technical solution adopted by the present invention is an innovative method for manufacturing a wind power generation hybrid tower structure, comprising the following steps:

[0016] S1, prefabricated inner layer concrete structure and middle layer fiber reinforced composite material structure;

[0017] S2. Install an information collection unit between the middle layer fiber reinforced composite material structure and the inner layer concrete structure, and fix the middle layer fiber reinforced composite material structure and the inner layer concrete structure by means of an adhesive;

[0018] S3, transporting the fixed middle layer fiber reinforced composite material structure and the inner layer concrete structure to the wind farm site, and installing an information collection unit on the outside of the middle layer fiber reinforced composite material structure;

[0019] S4, installing the outer steel structure on the outside of the middle fiber reinforced composite material structure through a connector;

[0020] S5. Connect the information collection unit to the data collector, and connect the data collector to the visual display screen to complete the manufacturing of the innovative wind power generation hybrid tower structure.

[0021] Another technical solution of the present invention is also characterized in that:

[0022] The specific steps of S1 are:

[0023] S1.1. Weigh the following raw materials by mass percentage: 30%-40% cement, 30%-40% sand, 20%-30% gravel, 0.9%-1.8% water reducer, 0.1%-0.2% air entraining agent, 1%-2% fiber material, the total content of the above raw materials is 100%; 50%-60% carbon fiber, 40%-50% resin, the total content of the above raw materials is 100%;

[0024] S1.2. Mix cement, sand, gravel, water reducing agent and fiber material, add appropriate amount of water, stir evenly to make concrete slurry, pour the concrete slurry into a mold, make it dense by vibration or pressurization and perform curing to make the concrete reach the designed strength; mix carbon fiber with resin, make an intermediate layer fiber reinforced composite material structure that matches the shape and size of the inner layer concrete structure through a winding or laying pultrusion process, and cure it to make the intermediate layer fiber reinforced composite material structure reach the designed performance.

[0025] The beneficial effects of the present invention are:

[0026] The innovative wind power generation hybrid tower structure and the manufacturing method thereof provided by the present invention avoid cracks caused by the single structure and stress concentration of the hybrid tower by arranging an inner concrete structure, an intermediate fiber reinforced composite material structure and an outer steel structure. At the same time, the use of fiber reinforced composite materials reduces the amount of steel used, further reduces costs, reduces energy consumption and environmental pollution, and the recyclability of fiber reinforced composite materials makes the hybrid tower more environmentally friendly; the multi-layer composite structure and the unique connection method make the hybrid tower have higher strength, rigidity and stability, and can better withstand the load of the wind turbine generator set; by arranging strain sensors, displacement sensors, temperature sensors and vibration sensors, the operating status parameters of the hybrid tower can be detected, and the parameters can be transmitted to the visual display screen through a data collector, which is convenient for on-site construction personnel to monitor the operating status of the hybrid tower, thereby improving the reliability and safety of the hybrid tower; the use of prefabrication technology makes the manufacture of the hybrid tower more convenient and quick, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the innovative wind power generation hybrid tower structure of the present invention.

[0028] In the figure, 1. Inner concrete structure, 2. Middle fiber reinforced composite structure, 3. Outer steel structure, 4. Data collector, 5. Visual display screen, 6. Strain sensor, 7. Displacement sensor, 8. Temperature sensor, 9. Vibration sensor. DETAILED DESCRIPTION

[0029] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] The innovative wind power generation mixed tower structure proposed in this embodiment is as follows: Figure 1 As shown, it includes an inner concrete structure 1, an intermediate fiber reinforced composite material structure 2 is fixedly connected to the outer wall of the inner concrete structure 1, an outer steel structure 3 is fixedly connected to the outer wall of the intermediate fiber reinforced composite material structure 2, and information collection units are provided between the inner concrete structure 1 and the intermediate fiber reinforced composite material structure 2 and between the intermediate fiber reinforced composite material structure 2 and the outer steel structure 3, the information collection unit is connected to a data collector 4 through a wire, and the data collector 4 is connected to a visual display screen 5 through a wire.

[0032] Example 2

[0033] The innovative wind power generation mixed tower structure proposed in this embodiment is as follows: Figure 1 As shown, it includes an inner concrete structure 1, an intermediate fiber reinforced composite material structure 2 is fixedly connected to the outer wall of the inner concrete structure 1, an outer steel structure 3 is fixedly connected to the outer wall of the intermediate fiber reinforced composite material structure 2, and information collection units are arranged between the inner concrete structure 1 and the intermediate fiber reinforced composite material structure 2 and between the intermediate fiber reinforced composite material structure 2 and the outer steel structure 3, the information collection unit is connected to a data collector 4 through a wire, and the data collector 4 is connected to a visual display screen 5 through a wire; the inner concrete structure 1 is fixedly connected to the intermediate fiber reinforced composite material structure 2 through an adhesive; the adhesive is any one of an epoxy resin adhesive, a polyurethane adhesive or an acrylate adhesive.

[0034] Example 3

[0035] The innovative wind power generation mixed tower structure proposed in this embodiment is as follows: Figure 1 As shown, it includes an inner concrete structure 1, an intermediate fiber reinforced composite material structure 2 is fixedly connected to the outer wall of the inner concrete structure 1, an outer steel structure 3 is fixedly connected to the outer wall of the intermediate fiber reinforced composite material structure 2, and information collection units are arranged between the inner concrete structure 1 and the intermediate fiber reinforced composite material structure 2 and between the intermediate fiber reinforced composite material structure 2 and the outer steel structure 3, the information collection unit is connected to a data collector 4 through a wire, and the data collector 4 is connected to a visual display screen 5 through a wire; the inner concrete structure 1 is fixed to the intermediate fiber reinforced composite material structure 2 through an adhesive; the adhesive adopts any one of epoxy resin adhesive, polyurethane adhesive or acrylic adhesive; the intermediate fiber reinforced composite material structure 2 adopts a carbon fiber composite material structure or a glass fiber composite material structure.

[0036] Example 4

[0037] The innovative wind power generation mixed tower structure proposed in this embodiment is as follows: Figure 1 As shown, it includes an inner layer concrete structure 1, which provides the main bearing capacity. The outer wall of the inner layer concrete structure 1 is fixedly connected to an intermediate layer fiber reinforced composite material structure 2, which has excellent tensile strength and impact resistance. The outer wall of the intermediate layer fiber reinforced composite material structure 2 is fixedly connected to an outer layer steel structure 3, which plays a protective and connecting role. Information collection units are arranged between the inner layer concrete structure 1 and the intermediate layer fiber reinforced composite material structure 2 and between the intermediate layer fiber reinforced composite material structure 2 and the outer layer steel structure 3. The information collection unit is connected to a data collector 4 through a wire, and the data collector 4 is connected to a visual display screen 5 through a wire; the inner layer concrete structure 1 is fixedly connected to the intermediate layer fiber reinforced composite material structure 2 through an adhesive; the adhesive adopts any one of epoxy resin adhesive, polyurethane adhesive or acrylic adhesive; The intermediate fiber reinforced composite material structure 2 adopts a carbon fiber composite material structure or a glass fiber composite material structure; the outer steel structure 3 is a cylinder made of rolled or welded steel plates, and the outer wall of the cylinder is coated with a hot-dip galvanized anti-corrosion layer or an epoxy zinc-rich primer coating anti-corrosion layer; the outer steel structure 3 is fixedly connected to the intermediate fiber reinforced composite material structure 2 and the inner concrete structure 1 through a number of connectors to ensure that the connection between the layers is firm and reliable, and can effectively transfer the load; the connectors adopt any one of mechanical anchor connectors, bonding anchor connectors or embedded connectors; the information acquisition unit includes a strain sensor 6, a displacement sensor 7, a temperature sensor 8 and a vibration sensor 9, and the strain sensor 6, the displacement sensor 7, the temperature sensor 8 and the vibration sensor 9 are respectively connected to the data acquisition device 4 through wires to monitor the stress, deformation, temperature and vibration parameters of the concrete tower in real time, so as to find problems in time and take corresponding measures.

[0038] Example 5

[0039] The innovative wind power generation hybrid tower structure manufacturing method proposed in this embodiment includes the following steps:

[0040] S1, prefabricated inner layer concrete structure and middle layer fiber reinforced composite material structure;

[0041] Prefabrication technology, the inner concrete structure and the middle fiber reinforced composite structure are prefabricated in the factory to ensure quality and precision. The prefabricated parts adopt modular design for easy transportation and installation;

[0042] S2. Install an information collection unit between the middle layer fiber reinforced composite material structure and the inner layer concrete structure, and fix the middle layer fiber reinforced composite material structure and the inner layer concrete structure by an adhesive;

[0043] S3, transporting the fixed middle layer fiber reinforced composite material structure and the inner layer concrete structure to the wind farm site, and installing an information collection unit on the outside of the middle layer fiber reinforced composite material structure;

[0044] S4, installing the outer steel structure on the outside of the middle fiber reinforced composite material structure through a connector;

[0045] S5. Connect the information collection unit to the data collector, and connect the data collector to the visual display screen to complete the manufacturing of the innovative wind power generation hybrid tower structure.

[0046] Example 6

[0047] The innovative wind power generation hybrid tower structure manufacturing method proposed in this embodiment includes the following steps:

[0048] S1, prefabricated inner layer concrete structure and middle layer fiber reinforced composite material structure;

[0049] The specific steps are:

[0050] S1.1. Weigh the following raw materials by mass percentage: 30%-40% cement, 30%-40% sand, 20%-30% gravel, 0.9%-1.8% water reducer, 0.1%-0.2% air entraining agent, 1%-2% fiber material, the total content of the above raw materials is 100%; 50%-60% carbon fiber, 40%-50% resin, the total content of the above raw materials is 100%;

[0051] S1.2. Mix cement, sand, gravel, water reducing agent and fiber material, add appropriate amount of water, stir evenly to make concrete slurry, pour the concrete slurry into a mold, make it dense by vibration or pressure, and perform curing to make the concrete reach the designed strength; mix carbon fiber with resin, make an intermediate layer fiber reinforced composite material structure matching the shape and size of the inner layer concrete structure by winding or layering pultrusion molding process, and perform curing to make the intermediate layer fiber reinforced composite material structure reach the designed performance;

[0052] S2. Install an information collection unit between the middle layer fiber reinforced composite material structure and the inner layer concrete structure, and fix the middle layer fiber reinforced composite material structure and the inner layer concrete structure by means of an adhesive;

[0053] S3, transporting the fixed middle layer fiber reinforced composite material structure and the inner layer concrete structure to the wind farm site, and installing an information collection unit on the outside of the middle layer fiber reinforced composite material structure;

[0054] S4, installing the outer steel structure on the outside of the middle fiber reinforced composite material structure through a connector;

[0055] S5. Connect the information collection unit to the data collector, and connect the data collector to the visual display screen to complete the manufacturing of the innovative wind power generation hybrid tower structure.

[0056] Example 7

[0057] The innovative wind power generation hybrid tower structure manufacturing method proposed in this embodiment includes the following steps:

[0058] S1, prefabricated inner layer concrete structure and middle layer fiber reinforced composite material structure;

[0059] The specific steps are:

[0060] S1.1. Weigh the following raw materials by mass percentage: 35.5% cement, 35.5% sand, 26% gravel, 1.35% water reducer, 0.15% air entraining agent, 1.5% fiber material, the sum of the above raw materials is 100%; 55% carbon fiber, 45% resin, the sum of the above raw materials is 100%;

[0061] S1.2. Mix cement, sand, gravel, water reducing agent and fiber material, add appropriate amount of water, stir evenly to make concrete slurry, pour the concrete slurry into a mold, make it dense by vibration or pressure, and perform curing to make the concrete reach the designed strength; mix carbon fiber with resin, make an intermediate layer fiber reinforced composite material structure matching the shape and size of the inner layer concrete structure by winding or layering pultrusion molding process, and perform curing to make the intermediate layer fiber reinforced composite material structure reach the designed performance;

[0062] S2. Install an information collection unit between the middle layer fiber reinforced composite material structure and the inner layer concrete structure, and fix the middle layer fiber reinforced composite material structure and the inner layer concrete structure by an adhesive;

[0063] S3, transporting the fixed middle layer fiber reinforced composite material structure and the inner layer concrete structure to the wind farm site, and installing an information collection unit on the outside of the middle layer fiber reinforced composite material structure;

[0064] S4, installing the outer steel structure on the outside of the middle fiber reinforced composite material structure through a connector;

[0065] Outer steel structure: Made of high-strength steel Q960;

[0066] S5. Connect the information collection unit with the data collector, and connect the data collector with the visual display screen to complete the manufacturing of the innovative wind power generation mixed tower structure;

[0067] The inner concrete structure provides the main bearing capacity, and the carbon fiber in the middle fiber-reinforced composite material structure has excellent tensile strength. The high tensile properties of the carbon fiber combined with the compressive properties of the concrete significantly improve the tensile strength of the mixed tower. Through experimental tests, compared with a single concrete tower, the tensile strength of the composite mixed tower of the present invention is increased by 30%, and compared with a single steel structure tower, the tensile strength of the mixed tower is increased by 20% due to the strengthening effect of the carbon fiber.

[0068] Improved impact resistance: The carbon fiber in the middle layer has good impact resistance, can effectively absorb and disperse impact energy, and prevent the expansion of cracks. When impacted, the combination of carbon fiber and resin can enhance the overall toughness of the mixed tower. According to tests, compared with a single concrete tower, the impact resistance of the composite mixed tower of the present invention is improved by 40%; compared with a single steel structure tower, due to the impact resistance of carbon fiber, the impact resistance of the mixed tower is improved by 30%.

[0069] Reduce the probability of cracks: The fiber material added to the inner concrete structure can reduce the shrinkage of concrete and enhance the toughness of concrete, thereby reducing the possibility of cracks. The middle layer fiber-reinforced composite material structure is connected to the inner concrete structure through a special adhesive, which can effectively disperse stress, reduce stress concentration, and further reduce the probability of cracks. In addition, the outer steel structure plays a protective and connecting role, which enhances the overall stability of the mixed tower and also helps to reduce the occurrence of cracks. Compared with the traditional single mixed tower, the composite mixed tower of the present invention reduces the probability of cracks by 50%.

Claims

1. Innovative wind power generation hybrid tower structure, It is characterized in that The invention comprises an inner concrete structure (1), wherein an outer wall of the inner concrete structure (1) is fixedly connected to an intermediate fiber-reinforced composite material structure (2), and an outer steel structure (3) is fixedly connected to the outer wall of the intermediate fiber-reinforced composite material structure (2). An information collection unit is provided between the inner concrete structure (1) and the intermediate fiber-reinforced composite material structure (2) and between the intermediate fiber-reinforced composite material structure (2) and the outer steel structure (3), wherein the information collection unit is connected to a data collector (4) via a wire, and the data collector (4) is connected to a visual display screen (5) via a wire.

2. According to the innovative wind power generation mixed tower structure of claim 1, It is characterized in that The inner layer concrete structure (1) is fixedly connected to the middle layer fiber reinforced composite material structure (2) via an adhesive.

3. According to the innovative wind power generation hybrid tower structure of claim 2, It is characterized in that The adhesive is any one of epoxy resin adhesive, polyurethane adhesive or acrylate adhesive.

4. According to the innovative wind power generation mixed tower structure of claim 3, It is characterized in that The intermediate layer fiber-reinforced composite material structure (2) is a carbon fiber composite material structure or a glass fiber composite material structure.

5. According to the innovative wind power generation hybrid tower structure of claim 4, It is characterized in that The outer steel structure (3) is a cylinder formed by rolling or welding steel plates, and the outer wall of the cylinder is coated with a hot-dip galvanizing anti-corrosion layer or an epoxy zinc-rich primer coating anti-corrosion layer.

6. According to the innovative wind power generation mixed tower structure of claim 5, It is characterized in that The outer steel structure (3) is fixedly connected to the middle fiber-reinforced composite material structure (2) and the inner concrete structure (1) via a plurality of connecting pieces.

7. The innovative wind power generation hybrid tower structure according to claim 6, It is characterized in that The connector is any one of a mechanical anchor connector, a bonding anchor connector or a pre-embedded connector.

8. According to the innovative wind power generation mixed tower structure of claim 7, It is characterized in that The information acquisition unit comprises a strain sensor (6), a displacement sensor (7), a temperature sensor (8) and a vibration sensor (9); the strain sensor (6), the displacement sensor (7), the temperature sensor (8) and the vibration sensor (9) are respectively connected to the data acquisition device (4) via wires.

9. Innovative wind power generation hybrid tower structure manufacturing method, It is characterized in that Using the innovative wind power generation mixed tower structure as claimed in claim 8 comprises the following steps: S1, prefabricated inner layer concrete structure and middle layer fiber reinforced composite material structure; S2. Install an information collection unit between the middle layer fiber reinforced composite material structure and the inner layer concrete structure, and fix the middle layer fiber reinforced composite material structure and the inner layer concrete structure by an adhesive; S3, transporting the fixed middle layer fiber reinforced composite material structure and the inner layer concrete structure to the wind farm site, and installing an information collection unit on the outside of the middle layer fiber reinforced composite material structure; S4, installing the outer steel structure on the outside of the middle fiber reinforced composite material structure through a connector; S5. Connect the information collection unit to the data collector, and connect the data collector to the visual display screen to complete the manufacturing of the innovative wind power generation hybrid tower structure.

10. The innovative method for manufacturing a wind power generation hybrid tower structure according to claim 9, It is characterized in that The specific steps of S1 are: S1.

1. Weigh the following raw materials by mass percentage: 30%-40% cement, 30%-40% sand, 20%-30% gravel, 0.9%-1.8% water reducer, 0.1%-0.2% air entraining agent, 1%-2% fiber material, the total content of the above raw materials is 100%; 50%-60% carbon fiber, 40%-50% resin, the total content of the above raw materials is 100%; S1.

2. Mix cement, sand, gravel, water reducing agent and fiber material, add appropriate amount of water, stir evenly to make concrete slurry, pour the concrete slurry into a mold, make it dense by vibration or pressurization and perform curing to make the concrete reach the designed strength; mix carbon fiber with resin, make an intermediate layer fiber reinforced composite material structure that matches the shape and size of the inner layer concrete structure through a winding or laying pultrusion process, and cure it to make the intermediate layer fiber reinforced composite material structure reach the designed performance.

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