A multi-tube wind power tower

Abstract

A multi-tube wind turbine tower comprises three or more thick tubes connected by connecting rods, each with a diameter of no less than 300 mm. Compared to truss-type towers, this invention utilizes fewer transverse rods and does not rely on diagonal bracing, significantly reducing steel consumption. Furthermore, due to its sufficient thickness, it offers excellent lateral force resistance and significant mechanical properties. It also addresses the poor stability issues associated with existing towers that rely solely on stacked steel tubes, as well as the short lifespan and long construction period associated with concrete towers, making it simple to manufacture and install.

Description

Technical Field

[0001] The present invention relates to a wind power tower, in particular to a multi-tube wind power tower. Background Art

[0002] There are three main structures of existing wind turbine towers. One is a truss structure, which is formed by splicing multiple thin tubes with columns, cross bars and diagonal bars; the second is a cylindrical or truncated cone structure with steel or concrete structure. Some are made of a tube with a circular cross-section by winding steel materials, and then the sections of the tube are spliced up and down to form a tower structure; others are built with concrete to form a tower structure with a circular cross-section; the third is a cylindrical or truncated cone tower with a steel-concrete structure, that is, the lower part is made of concrete and the upper part is made of steel structure to ensure stability.

[0003] However, the three aforementioned structures suffer from the following major drawbacks: First, concrete is prone to fatigue cracking over time, resulting in a short service life and a long on-site erection period. Steel structures spliced into truncated cones or cylinders suffer from poor stability, necessitating thicker tubes, which significantly increases steel consumption and costs, making them unsuitable for large wind turbines. While steel-concrete structures can reduce costs, they also share the shortcomings of both concrete and steel. Second, truss structures are less stable than concrete and require several overlapping thin tubes, resulting in a relatively high steel consumption. Furthermore, their fabrication and installation are complex. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a multi-tube wind turbine tower with good mechanical properties, lateral force resistance, high structural stability and low steel consumption.

[0005] The technical solution of the present invention is: a multi-tube wind power tower, the tower comprises three or more thick tubes, the thick tubes are connected by connecting rods, and the diameter of the thick tubes is not less than 300 mm.

[0006] The above solution offers the following advantages: Using three or more thick tubes horizontally overlapped rather than stacked, with adjacent tubes connected by connecting rods, it significantly improves overall stability. Furthermore, compared to truss-type towers, thick tubes require fewer transverse rods and do not rely on diagonal bracing, significantly reducing steel consumption. Their sufficient thickness also provides significant lateral force resistance and mechanical properties. Furthermore, they are simple to manufacture and install.

[0007] The three or more pipes of the present invention can be three, four, five, six, etc., preferably three or four, which can ensure the stability of the tower and save steel consumption. The diameter of the thick pipe is preferably 400-800 mm.

[0008] Furthermore, the thick tubes are combined to form a tapered structure that is larger at the bottom and smaller at the top. The present invention can either tilt the thick tubes, creating a tapered structure that gradually decreases in size from bottom to top. Alternatively, the thick tubes themselves can be designed to be larger at the bottom and smaller at the top, and then connected by connecting rods to form an overall structure that is larger at the bottom and smaller at the top. This tapered structure significantly improves the structural stability of the tower, thereby resolving the poor stability issues associated with existing stacked steel tubes and the short lifespan and long construction period associated with using concrete.

[0009] Furthermore, each thick tube itself is also a tapered structure with a larger bottom and a smaller top. When the thick tube is designed to have a larger bottom and a smaller top structure, the maximum diameter of the thick tube is preferably not less than 300 mm, and more preferably 400-800 mm.

[0010] Furthermore, at the bottom of the thick tube, the diameter of the thick tube is the tube diameter, and the distance between the two thick tubes is the tube pitch. The tube diameter is greater than or equal to one-quarter of the tube pitch. Existing truss-type towers use thin tubes with a large tube pitch between adjacent thin tubes, meaning the tube pitch is large and the tube diameter is small. In contrast, the tower of the present invention has a large tube diameter and a small tube pitch, meaning the tube diameter is no less than one-quarter of the tube pitch. This demonstrates that the thick tubes of the present invention significantly enhance lateral force resistance, thereby improving structural stability and saving steel.

[0011] Preferably, at the bottom of the thick tube, the tube diameter is equal to one-third of the tube spacing. This ratio of tube diameter to tube spacing is the preferred structure of the present invention. Under this ratio, its lateral force resistance and structural stability are very good, and it is not easy to shake even in strong winds.

[0012] Furthermore, the cross-sectional shape of the thick tube is circular, which has better stability and mechanical properties than other shapes.

[0013] Furthermore, the thick tube is made of metal or a stainless steel sandwich panel. The metal material can be stainless steel, carbon steel, or other materials. When using a stainless steel sandwich panel, the core layer can be a honeycomb or an array of spaced core tubes. Furthermore, the sandwich layer configuration is lighter, stronger, and significantly reduces steel consumption.

[0014] Furthermore, the lower end of each thick pipe is fixed to the ground or sea platform respectively. When there are three thick pipes, the three thick pipes are arranged in a triangle, and the upper ends of the three thick pipes have a platform for installing wind power. Since the existing wind resources are mainly used to generate electricity in the mountains and oceans. Among them, wind power near the ocean has basically been covered. The present invention can use wind power in every part of the world, turning limited wind power resources into infinite, so that wind power can truly solve the world's energy needs. Therefore, in addition to being able to be installed on the sea or on the mountain, the wind power tower of the present invention can also be installed in cities, rural areas, fields, farms and other places. The number of thick pipes is preferably three, and the three thick pipes are arranged in a triangle position to form a stable structure; the top of the thick pipe is connected to the wind power generation system through the installation platform.

[0015] Furthermore, the thick tube is a sealed structure, and each thick tube is divided into multiple sections, and the sections are not connected or partially connected. By designing the thick tube into a sealed structure, the present invention can be used to store water and / or steam, etc. For example, the surplus electricity of the wind power generation system and / or the external power grid can heat the water in the thick tube into high-temperature and high-pressure steam; when the wind power generation system needs to supply power to the outside and / or the external power grid is insufficient, the stored steam is converted into electricity through the steam turbine generator for energy release. Among them, each thick tube can be divided into multiple sections, which can be understood as multiple sections connected to form a thick tube, or it can be understood as a long thick tube with sealed partitions, and the inner cavity of the thick tube is divided into multiple sections by each sealed partition. In this way, different substances can be stored in each sealed tube. For example, the water temperature can be changed by wind power generation, and stored water with different temperatures can be stored in different tubes to meet daily heating or cooling needs in cities or homes.

[0016] Furthermore, the outer portion of the thick pipe is provided with an insulation layer. This insulation layer can, on the one hand, insulate the water or steam stored in the thick pipe; on the other hand, even if no water is stored in the thick pipe, the insulation layer can protect the steel of the thick pipe from expansion and deformation due to excessive temperature differences.

[0017] The beneficial effects of the present invention are as follows: by arranging more than three thick pipes to be horizontally built into a structure with a larger bottom and a smaller top, the structural stability can be greatly improved, and the diameter of the thick pipe is large. Compared with a truss-type tower, it has a small number of transverse rods and does not rely on other diagonal braces, thereby greatly reducing steel consumption. Moreover, because it is thick enough, it has good lateral force resistance and significant mechanical properties. It solves the problem of poor stability caused by the existing use of only stacking steel pipes up and down, and also solves the problem of short life and long construction period caused by the use of concrete. It is simple to make and install. By setting the proportional relationship between the pipe diameter and the pipe spacing, it is indirectly indicated that the pipe body of the present invention is a thick pipe, and this proportional relationship can greatly improve the lateral force resistance on the basis of saving steel consumption. It will not shake even in strong winds, and will not cause the tower to break due to strong winds. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a wind turbine tower according to embodiment 1 of the present invention;

[0019] Figure 2 yes Figure 1 The enlarged structural diagram of the tower top with a wind power generation system in Example 1 is shown;

[0020] Figure 3 This is a schematic structural diagram of a thick pipe top mounting platform according to Example 1 of the present invention;

[0021] Figure 4 It is a structural schematic diagram of thick pipe transportation in Example 2 of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Example 1

[0024] like Figures 1 to 3 As shown: A multi-tube wind power tower, the tower is composed of three thick tubes 1, which are connected by connecting rods 2. The three thick tubes 1 are arranged in a triangle, and the three thick tubes 1 are placed obliquely. Connecting rods 2 are set at a certain distance between adjacent thick tubes.

[0025] In this embodiment, the diameter of the thick tube 1 is 400 mm and cylindrical. Three thick tubes 1 are arranged at an angle to form a tapered structure with a larger bottom and a smaller top. For example, the tower expands by 0.7 m for every 12 m from top to bottom. At the bottom of the thick tube 1, the diameter of the thick tube is the tube diameter, and the distance between two adjacent thick tubes is the tube pitch, which is equal to one-third of the tube pitch.

[0026] In this embodiment, each thick tube 1 is composed of multiple sections stacked one above the other, each section connected by flanges. The inner cavities of each section can be fully connected, partially connected, or partially disconnected.

[0027] In this embodiment, the thick tubes 1 are made of stainless steel. When the three thick tubes 1 are arranged at an angle, their lower ends are all beveled, allowing them to be installed on the ground or other platforms, for example, by securing them to the platform or ground foundation via flanges. The tops of the three thick tubes are connected to a platform 3, facilitating the installation of a wind turbine system 4 on this platform. The height of the thick tubes 1 can be adjusted as needed.

[0028] Example 2

[0029] The difference from Example 1 lies in the fact that the three thick tubes each have a tapered structure, larger at the bottom and smaller at the top. These three thick tubes are placed vertically and arranged in a triangular pattern, creating a tapered structure with a larger bottom and a smaller top. Because each thick tube has a tapered structure, it inherently possesses a certain degree of stability. The triangular arrangement of the three thick tubes further enhances the overall stability of the tower, preventing it from shaking or breaking even in strong winds. The maximum diameter of the thick tubes is 600 mm; at the bottom, the diameter is equal to half the tube spacing.

[0030] Moreover, the thick tube is designed to be a tapered structure with a larger bottom and a smaller top. Each section of the tube body 11 of each thick tube is also a structure with a larger bottom and a smaller top. The size of each section of the tube body 11 arranged from the bottom to the top of the thick tube gradually decreases. Designing the thick tube to be a tapered structure with a larger bottom and a smaller top can facilitate transportation. Because the size between each section of the tube body 11 gradually decreases, a nesting doll structure can be formed for transportation, that is, a small-sized tube body is inserted into a large-sized tube body, and the largest-sized tube body 11 can be designed to meet the size of container transportation. During transportation, a transport frame 5 with top and bottom corner pieces can be set at both ends of the largest-sized tube body after the sections of the tube body are inserted, so as to meet the container standards for sea and land transportation, such as transporting two thick tubes at a time. Figure 4 shown.

[0031] Example 3

[0032] The difference from Example 1 is that multiple spaced baffles are installed within the thick tube, forming multiple sealed chambers within the tube. Each chamber can store a corresponding substance, such as water, steam, or compressed air. This can be used to store excess electricity from the wind turbine by heating the water in the thick tube to high-temperature, high-pressure steam. The steam turbine then converts the stored steam into electricity for energy release. In addition, the outside of the thick tube is provided with an insulation layer.

[0033] Example 4

[0034] The difference from Example 1 is that the tower is composed of four thick tubes, which are connected by connecting rods, and three thick tubes are arranged in a square or trapezoidal shape. Other aspects are the same as any one of Examples 1 to 3.

[0035] Example 5

[0036] The difference from Example 1 is that the thick tube is made of a stainless steel sandwich panel, and the sandwich layer is an array of core tubes arranged at intervals, which are connected to the upper and lower panels by brazing to form a sandwich panel. In this embodiment, an insulation layer can also be provided in the gaps between the core tubes in the sandwich layer.

[0037] In summary, the present invention can greatly improve the structural stability by arranging more than three thick pipes to be horizontally built into a structure with a larger bottom and a smaller top. The diameter of the thick pipe is large. Compared with the truss-type tower, it has a small number of transverse rods and does not rely on other diagonal braces, thereby greatly reducing steel consumption. Moreover, because it is thick enough, it has good lateral force resistance and significant mechanical properties. It also solves the problem of poor stability caused by the existing use of only stacking steel pipes up and down, and also solves the problem of short life and long construction period caused by the use of concrete. It is simple to manufacture and install. By setting the proportional relationship between the pipe diameter and the pipe spacing, it is indirectly explained that the pipe body of the present invention is a thick pipe, and this proportional relationship can greatly improve the lateral force resistance on the basis of saving steel consumption. It will not shake even in strong winds, and will not cause the tower to break due to strong winds.

Claims

1. A multi-tube wind turbine tower, characterized in that: The tower is composed of more than three thick tubes, which are connected by connecting rods. The diameter of the thick tubes is not less than 300 mm. The thick tubes are designed to be a tapered structure with a larger bottom and a smaller top. The various sections of each thick tube are also designed to be a larger bottom and a smaller top structure, so that during transportation, the small-sized tube can be inserted into the large-sized tube. Transport frames with top and bottom corner fittings are set at both ends of the largest-sized tube after the sections of the tube are inserted, and are designed to meet the size of container transportation.

2. The multi-tube wind turbine tower according to claim 1, characterized in that: At the bottom of the thick tube, the diameter of the thick tube is the tube diameter, the distance between the two thick tubes is the tube distance, and the tube diameter is greater than or equal to one quarter of the tube distance.

3. The multi-tube wind turbine tower according to claim 2, characterized in that: At the bottom of the thick pipe, the pipe diameter is equal to one third of the pipe distance.

4. The multi-tube wind turbine tower according to claim 1 or 2, characterized in that: The cross-section of the thick tube is circular.

5. The multi-tube wind turbine tower according to claim 1 or 2, characterized in that: The thick tube is made of metal material or a stainless steel sandwich panel.

6. The multi-tube wind turbine tower according to claim 1 or 2, characterized in that: The lower end of each thick pipe is fixed on the ground or sea platform. When there are three thick pipes, the three thick pipes are arranged in a triangle, and the upper ends of the three thick pipes have a platform for installing wind power.

7. The multi-tube wind turbine tower according to claim 1, characterized in that: The thick tube is a sealed structure, and each thick tube is divided into a plurality of tube sections, and the tube sections are not connected or partially connected.

8. The multi-tube wind turbine tower according to claim 1, characterized in that: The outside of the thick pipe is provided with a heat-insulating layer.

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