Electromagnetic guiding positioning T-shaped joggle joint assembly type lightweight offshore wind power combined tower drum

Abstract

The invention relates to the technical field of wind power generation, in particular to an electromagnetic guide positioning T-shaped joggle joint assembly type lightweight offshore wind power combined tower drum which comprises a plurality of drum pieces, a plurality of guide plates and an electromagnetic adsorption device, a T-shaped tenon is arranged on one side of each drum piece, and a T-shaped groove is formed in the other side of each drum piece; every two adjacent cylinder pieces are connected together through the corresponding T-shaped tenon and the corresponding T-shaped groove, the multiple guide plates are arranged on the outer sides of the cylinder pieces and used for guiding the cylinder pieces to be assembled in a sliding mode and fixing and protecting the joggled joint, the inner sides, close to the cylinder pieces, of the guide plates are provided with protruding structures, and the electromagnetic attraction devices are arranged on the protruding structures of the guide plates. The electromagnetic adsorption device is used for adsorbing the barrel piece. By means of the arrangement, the barrel piece splicing adjusting time and the operation difficulty can be effectively reduced, the stability and perpendicularity of the overall structure of the wind power tower barrel are powerfully guaranteed, the operation safety and reliability of wind power equipment are improved, and the problems of tower barrel transportation and construction are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and particularly relates to an electromagnetic-guided positioning T-shaped tenon joint assembled lightweight offshore wind power combined tower barrel. Through the selection of lightweight materials and modular structure design, the overall weight of the tower barrel is significantly reduced, while ensuring structural strength and reliability. Background Art

[0002] In the context of the rapid economic and social development, non-renewable energy dominated by fossil fuels has been difficult to meet the needs of social production. At the same time, the status of wind energy in the energy strategies of various countries in the world has been continuously improved, providing strong support for the development of the global low-carbon economy and becoming an important choice for humanity to address climate change.

[0003] Wind energy is characterized by being green, clean, rich in reserves, and widely distributed. Therefore, the development of wind power technology helps to achieve the "dual carbon" goal and the sustainable development of humanity. Wind power technology converts wind energy into mechanical work, drives the rotor to rotate, and finally generates alternating current, with advantages such as cleanliness, high utilization rate, and flexible assembly. Compared with onshore wind energy, offshore wind energy is generally not hindered by terrain. Therefore, offshore wind power has advantages such as high wind speed, low wind resistance, and short calm wind periods, while also saving land resources.

[0004] In the process of the booming development of offshore wind power, the assembly of wind power tower barrels is a key link. Traditional assembly technologies have many deficiencies in dealing with complex offshore working conditions. Harsh offshore climate conditions, such as strong winds, waves, and variable weather, make it extremely difficult to hoist and position tower barrel segments, resulting in extremely low construction efficiency, a significant extension of the construction period, and a sharp increase in project costs. At the same time, existing assembly processes perform poorly in terms of the stability and sealing of the connection between barrel segments. The connection parts are prone to loosening, and problems such as water leakage and air leakage often occur at the gaps, seriously threatening the long-term safe operation of wind power tower barrels and reducing the overall reliability and service life of offshore wind power equipment. In addition, different from the assembly of barrel segments, the transportation of the entire tower barrel requires special and expensive transportation equipment and ships for hoisting. Due to the complex marine environment during transportation, the tower barrel is extremely vulnerable to damage, further increasing project costs and risks. Traditional offshore wind power tower barrels mostly adopt pure steel or concrete structures, with problems such as large weight, high transportation costs, and difficult installation. Especially in deep-sea environments, the excessive self-weight of the tower barrel easily leads to the complication of the foundation structure, increasing construction and maintenance costs. Therefore, on the premise of ensuring bearing capacity, developing a tower barrel structure that combines lightweight and high strength is of great significance for reducing the comprehensive cost of offshore wind power projects and improving construction efficiency.

[0005] It should be noted that the information disclosed in this background art section is only intended to enhance the overall understanding of the present invention and should not be regarded as an admission or any form of implication that this information constitutes prior art already known to those of ordinary skill in the art. Summary of the Invention

[0006] The present invention provides an electromagnetic-guided positioning T-shaped tenon joint prefabricated lightweight offshore wind power combined tower barrel, which includes a plurality of barrel segments, a plurality of guide plates and an electromagnetic adsorption device. One side of each of the barrel segments is provided with a T-shaped male tenon, and the other side is provided with a T-shaped female groove. Two adjacent barrel segments are connected together through the T-shaped male tenon and the T-shaped female groove. A plurality of guide plates are arranged on the outer sides of the plurality of barrel segments. The guide plates are used to guide the barrel segments to slide along the guide plates, and a raised structure is arranged on the inner side of the guide plates close to the barrel segments. The electromagnetic adsorption device is arranged on the raised structure of the guide plates, and the electromagnetic adsorption device is used to adsorb the barrel segments.

[0007] Furthermore, the electromagnetic-guided positioning T-shaped tenon joint prefabricated lightweight offshore wind power combined tower barrel further includes a fixed base, and the plurality of guide plates and the plurality of barrel segments are arranged on the fixed base.

[0008] Furthermore, the barrel segment includes an aluminum alloy plate and a concrete structure. The concrete structure is filled inside the aluminum alloy plate. The yield strength of the aluminum alloy plate is greater than or equal to 200 Mpa, and the compressive strength of the concrete structure is greater than or equal to 80 Mpa.

[0009] Furthermore, the material of the concrete structure includes high-strength grouting material, ultra-high performance concrete (UHPC) or ultra-high performance lightweight concrete (UHPLC).

[0010] Furthermore, the barrel segment is an arc-shaped barrel segment.

[0011] Furthermore, the raised structures on two adjacent guide plates form a sliding and assembling track for the barrel segments.

[0012] Furthermore, the barrel segment is provided with a magnetic conductive material.

[0013] Furthermore, the raised structures on the inner sides of the guide plates are provided with longitudinally distributed electromagnetic adsorption devices, and the tenon joint of the T-shaped male tenon and the T-shaped female groove is located between the two electromagnetic adsorption devices.

[0014] Furthermore, bolts are arranged at the bottom ends of the guide plates.

[0015] Furthermore, the electromagnetic adsorption device includes a plurality of sucker-type DC electromagnets.

[0016] An electromagnetic guiding and positioning T-shaped tenon joint assembled lightweight offshore wind power combined tower barrel provided by the present invention can effectively reduce the assembly adjustment time and operation difficulty of the barrel pieces through the combined setting of the barrel pieces, guiding plates and electromagnetic adsorption devices, effectively ensure the overall structural stability and verticality of the electromagnetic guiding and positioning T-shaped tenon joint assembled lightweight offshore wind power combined tower barrel, improve the operation safety and reliability of the wind power equipment, and solve the transportation and construction problems of the electromagnetic guiding and positioning T-shaped tenon joint assembled lightweight offshore wind power combined tower barrel.

[0017] The present invention realizes the lightweight goal through the following technical solutions: 1. Lightweight material composite design: The barrel piece adopts an aluminum alloy sandwich concrete structure. Among them, the aluminum alloy plate (such as high-strength 7-series alloy) has the characteristics of high strength and low density, and the internal sandwich concrete structure selects ultra-high performance lightweight concrete (UHPLC). Through density optimization and structural design, on the premise of ensuring the bearing capacity, the weight is reduced by more than 44.85% compared with the traditional pure steel tower barrel. 2. Modular assembled structure: Through T-shaped tenon joint and electromagnetic guiding and positioning technology, the tower barrel is decomposed into multiple prefabricated arc barrel pieces, and the single-piece weight is reduced to the operable range of conventional lifting equipment, without relying on heavy transport ships, significantly reducing the logistics cost and carbon emissions. 3. Redundant structure optimization: The guiding plate and the electromagnetic adsorption device are integrated on the outer side of the barrel piece, and the electromagnetic force is used to assist positioning, eliminating the complex support frame required for traditional assembly and further reducing the weight of the additional structure.

[0018] Other features and beneficial effects of the present invention will be described in the subsequent description, and some of the technical features and beneficial effects can be obviously obtained from the description, or can be understood by implementing the present invention. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, some of the following drawings are embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is a three-dimensional schematic diagram of the tower barrel provided by an embodiment of the present invention; Figure 2 is a structural schematic diagram of the guiding plate provided by an embodiment of the present invention; Figure 3 is a schematic diagram of the sliding track formed by the inner convex structures of adjacent guiding plates provided by an embodiment of the present invention; Figure 4 is a structural schematic diagram of the barrel piece provided by an embodiment of the present invention; Figure 5It is a schematic diagram of the result at the cross-section of the cylinder piece provided by an embodiment of the present invention.

[0021] Reference numerals: 1 - Guide plate, 2 - Cylinder piece, 3 - Bolt, 4 - Fixed base, 5 - Electromagnetic adsorption device, 6 - T-shaped tenon, 7 - T-shaped groove, 8 - Protrusion structure, 9 - Aluminum alloy plate, 10 - Concrete structure. Detailed implementation manners

[0022] To make the objectives, 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 with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention; as long as the technical features designed in different implementation manners of the present invention described below do not conflict with each other, they can be combined with each other; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "transverse", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more. In addition, the term "comprising" and any deformation thereof mean "at least including".

[0024] Please refer to Figures 1 to 5 , Figure 1 which is a three-dimensional schematic diagram of the tower barrel provided by an embodiment of the present invention, Figure 2 which is a structural schematic diagram of the guide plate provided by an embodiment of the present invention, Figure 3 which is a schematic diagram of the sliding track formed by the inner protrusion structures of adjacent guide plates provided by an embodiment of the present invention, Figure 4 which is a structural schematic diagram of the cylinder piece provided by an embodiment of the present invention, Figure 5 which is a schematic diagram of the result at the cross-section of the cylinder piece provided by an embodiment of the present invention.

[0025] To achieve at least one of the above advantages or other advantages, an embodiment of the present invention provides an electromagnetic-guided positioning T-shaped tenon-connected prefabricated lightweight offshore wind power combined tower barrel. As shown in the figure, the tower barrel includes a plurality of barrel segments 2, a plurality of guide plates 1, and an electromagnetic adsorption device 5.

[0026] On one side of each barrel segment 2, a T-shaped male tenon 6 is provided, and on the other side, a T-shaped female groove 7 is provided. Two adjacent barrel segments 2 are connected together through the T-shaped male tenon 6 and the T-shaped female groove 7, as shown in the reference Figure 1 figure. A plurality of guide plates 1 are arranged on the outer sides of the plurality of barrel segments 2. The guide plates 1 are used to guide the barrel segments 2 to slide along the guide plates 1. On the inner side of the guide plate 1 close to the barrel segment 2, a convex structure 8 is provided. The convex structures 8 on the inner sides of two adjacent arc-shaped guide plates 1 form a sliding and assembling track for the barrel segment 2, realizing the precise positioning and installation of the barrel segment 2.

[0027] The electromagnetic adsorption device 5 is arranged on the convex structure 8 of the guide plate 1. The electromagnetic adsorption device 5 is used to adsorb the barrel segment 2. Further, the number of the guide plates 1 is the same as that of the barrel segments 2 to facilitate splicing and installation.

[0028] Further, the electromagnetic-guided positioning T-shaped tenon-connected prefabricated lightweight offshore wind power combined tower barrel further includes a fixed base 4. The plurality of guide plates 1 and the plurality of barrel segments 2 are arranged on the fixed base 4. The fixed base 4 can be made of high-strength steel, so as to have sufficient stability and load-bearing capacity, and can be firmly installed on the assembling platform, providing a solid foundation support for the guide plate 1 to ensure that there is no displacement or shaking in the complex offshore environment. Its shape and size are designed according to the layout of the assembling platform and the specifications of the offshore wind power electromagnetic-guided positioning T-shaped tenon-connected prefabricated lightweight offshore wind power combined tower barrel to ensure the compatibility and coordination with surrounding equipment and structures.

[0029] Further, the T-shaped structure can guide the barrel segment 2 to be aligned during the insertion process, thereby reducing the accuracy requirements for the insertion positioning device, improving the fault tolerance of the entire assembling process, and forming a tight mechanical bite after insertion. The connection of the barrel segment 2 is completed through the T-shaped tenon connection of the T-shaped male tenon 6 and the T-shaped female groove 7.

[0030] Regarding the installation and splicing of the barrel segment 2, the following steps are illustrated by way of example.

[0031] Step 1: Install the fixed base 4 on the assembling platform and set up the guide plate 1 on the fixed base 4. The guide plate 1 is fixed by high-strength corrosion-resistant bolts of the fixed base 4. The high-strength corrosion-resistant bolts are made of high-strength alloy steel, such as 42CrMo, and their corrosion resistance is enhanced through galvanizing, Dacromet coating, etc. High-strength corrosion-resistant nuts are equipped with nylon or spring washer lock nuts to ensure that the bolt connection will not loosen under the action of long-term vibration and wind force, and ensure the tightness and stability of the connection of the barrel segment 2.

[0032] Step 2: Operate the crane to lift the cylinder piece 2 above the assembly platform and slowly lower it above the guide plate 1. During the insertion of the cylinder piece 2, start the electromagnetic adsorption device 5 in a timely manner. The electromagnetic force generated by the electromagnetic adsorption device 5 can attract the cylinder piece 2, causing the cylinder piece 2 to slide along the track formed by the convex structures 8 of two adjacent guide plates 1.

[0033] Step 3: Continuously lower the cylinder piece 2 until the T-shaped tenon 6 and the T-shaped groove 7 are fully tenoned.

[0034] Step 4: Repeat the above three steps until the assembly of the wind power tower barrel is completed.

[0035] Furthermore, the cylinder piece 2 is an arc-shaped cylinder piece 2. The guide plate 1 is an arc-shaped guide plate 1, and the die forming process can be used to manufacture a shape consistent with the radian of the cylinder piece 2. The inner wall surface of the guide plate 1 is finely polished and polished to ensure its smoothness.

[0036] In some embodiments, the cylinder piece is provided with a magnetic conductive material. For example, a magnetic conductive material (such as a low-carbon steel plate) is fixed on the electromagnetic adsorption surface and bonded by bolts or high-strength adhesives to form a magnetic conductive contact surface. Or perform local plating, electroplate nickel or iron on the contact area to enhance the magnetic conductivity, and ensure the plating thickness and adhesion. Or embed a magnetic conductive metal (such as an iron core) inside the aluminum alloy plate 9 as part of the magnetic circuit to optimize the magnetic field path.

[0037] Furthermore, the electromagnetic adsorption device 5 includes a plurality of sucker-type DC electromagnets. The iron core of the sucker-type DC electromagnet can be made of a soft magnetic material with high magnetic permeability, which can quickly generate a strong magnetic field when energized. The sucker-type DC electromagnet can adopt a circular sucker design, which can better fit the surface of the cylinder piece 2 to increase the adsorption force. The suction force can be controlled by adjusting the current intensity to adapt to cylinder pieces 2 of different weights and materials, and can effectively assist the positioning of the cylinder piece 2 when the cylinder piece 2 is approaching, improving the positioning accuracy and efficiency.

[0038] Furthermore, the electromagnetic adsorption device 5 is longitudinally distributed on each guide plate 1, and the tenon joint of the connected T-shaped tenon 6 and T-shaped groove 7 is located between two electromagnetic adsorption devices 5, which can effectively reduce the assembly adjustment time and operation difficulty of the cylinder piece 2, and effectively ensure the stability and verticality of the overall structure of the wind power tower barrel.

[0039] Furthermore, high-strength corrosion-resistant bolts 3 are provided at the bottom end of the guide plate 1 to strengthen the fixed connection.

[0040] In some embodiments, the entire side wall of the cylinder piece 2 is provided with T-shaped mortise and tenon joints, so that the connection between two adjacent cylinder pieces 2 is tighter, avoiding potential safety hazards.

[0041] In some embodiments, a sealing strip (not shown in the figure) is provided at the connection of two adjacent cylinder pieces 2. The inside of the sealing strip is a hollow cavity structure, which can adaptively deform according to the size and shape of the gap when the cylinder pieces 2 are connected, fully filling the gap, effectively preventing seawater infiltration and air erosion, and protecting the internal equipment of the electromagnetic guidance positioning T-shaped tenon joint assembled lightweight offshore wind power combined tower barrel. The sealing strip can be made of a high-performance rubber material, such as ethylene propylene diene monomer (EPDM), which has excellent elasticity, aging resistance and corrosion resistance, and can maintain good sealing performance under long-term seawater immersion and harsh climate conditions.

[0042] In some embodiments, as Figure 5 shown, each cylinder piece 2 can be a cylinder piece of an aluminum alloy sandwich concrete structure, that is, the cylinder piece 2 includes an aluminum alloy plate 9 and a concrete structure 10. The concrete structure 10 is filled inside the aluminum alloy plate 9. The aluminum alloy plate 9 is made of an aluminum alloy with a yield strength greater than or equal to 200 Mpa, and the sandwich concrete structure 10 is made of a high-strength grouting material, ultra-high performance concrete (Ultra-High Performance Concrete, UHPC) or ultra-high performance lightweight concrete (Ultra-High Performance Lightweight Concrete, UHPLC) with a compressive strength greater than or equal to 80 Mpa. The compressive strength of ultra-high performance concrete ≥ 120 MPa, and the tensile strength ≥ 8 MPa (the compressive strength of ordinary concrete is about 20 - 40 MPa). It has an extremely low porosity (pore diameter < 100 nm) and excellent impermeability, freeze-thaw resistance and corrosion resistance. The density of ultra-high performance lightweight concrete is 1800–2200 kg / m³ (15 - 25% lighter than UHPC), the compressive strength ≥ 60 MPa (lower than UHPC but higher than ordinary lightweight concrete), and the thermal conductivity is low (0.5–1.0 W / (m·K)), having both heat insulation and heat preservation functions.

[0043] In summary, for the electromagnetic guidance positioning T-shaped tenon joint assembled lightweight offshore wind power combined tower barrel provided by the present invention, through the combination of the cylinder piece 2, the guide plate 1 and the electromagnetic adsorption device 5, the assembly adjustment time and operation difficulty of the cylinder piece 2 can be effectively reduced, the overall structural stability and verticality of the wind power tower barrel can be effectively guaranteed, the operation safety and reliability of the wind power equipment can be improved, and the problems of tower barrel transportation and assembly can be solved.

[0044] In addition, those skilled in the art should understand that although there are many problems in the prior art, each embodiment or technical solution of the present invention can be improved only in one or several aspects, and it is not necessary to solve all the technical problems listed in the prior art or the background art at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation to that claim.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An electromagnetically guided positioning T-jointed assembled lightweight offshore wind power combined tower, characterized in that: The electromagnetically guided positioning T-shaped tenon-jointed assembled lightweight offshore wind power combined tower comprises: A plurality of cylinder pieces, each of which has a T-shaped tenon on one side and a T-shaped groove on the other side, and two adjacent cylinder pieces are connected together through the T-shaped tenon and the T-shaped groove; A plurality of guide plates are arranged on the outer sides of the plurality of cylinder sheets, the guide plates are used to guide the cylinder sheets to slide along the guide plates, and a convex structure is arranged on the inner side of the guide plates close to the cylinder sheets; An electromagnetic adsorption device is arranged on the protruding structure of the guide plate, and the electromagnetic adsorption device is used to adsorb the cylinder sheet.

2. According to claim 1, the electromagnetically guided positioning T-jointed assembled lightweight offshore wind power combined tower is characterized by: The electromagnetically guided positioning T-shaped mortise-and-tenon assembled lightweight offshore wind power combined tower also includes a fixed base, and the multiple guide plates and the multiple cylinder sheets are arranged on the fixed base.

3. The electromagnetically guided positioning T-jointed assembled lightweight offshore wind power combined tower according to claim 1 is characterized in that: The cylinder sheet includes an aluminum alloy plate and a concrete structure, wherein the concrete structure is filled inside the aluminum alloy plate, the yield strength of the aluminum alloy plate is greater than or equal to 200 MPa, and the compressive strength of the concrete structure is greater than or equal to 80 MPa.

4. The electromagnetically guided positioning T-jointed assembled lightweight offshore wind power combined tower according to claim 3 is characterized by: The material of the concrete structure includes high-strength grouting material, ultra-high performance concrete or ultra-high performance lightweight concrete.

5. The electromagnetically guided positioning T-jointed assembled lightweight offshore wind power combined tower according to claim 1 is characterized in that: The cylinder sheet is an arc-shaped cylinder sheet.

6. The electromagnetically guided positioning T-jointed assembled lightweight offshore wind power combined tower according to claim 1 is characterized by: The protruding structures on two adjacent guide plates form a sliding assembly track for the cylinder sheet.

7. The electromagnetically guided positioning T-jointed assembled lightweight offshore wind power combined tower according to claim 1 is characterized by: The cylinder sheet is provided with magnetic conductive material.

8. The electromagnetically guided positioning T-jointed assembled lightweight offshore wind power combined tower according to claim 1 is characterized in that: The protruding structure on the inner side of each guide plate is provided with a longitudinally distributed electromagnetic adsorption device, and the mortise and tenon joint of the T-shaped convex tenon and the T-shaped groove is located between the two electromagnetic adsorption devices.

9. The electromagnetically guided positioning T-jointed assembled lightweight offshore wind power combined tower according to claim 1 is characterized by: The bottom end of the guide plate is provided with a bolt.

10. The electromagnetically guided positioning T-jointed assembled lightweight offshore wind power combined tower according to claim 1 is characterized in that: The electromagnetic adsorption device includes a plurality of suction cup type DC electromagnets.

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