Replaceable and rotatable lug plate type connecting node between floating body structures of offshore floating type photovoltaic platform

Abstract

The invention discloses a replaceable and rotatable lug plate type connecting node between floating body structures of an offshore floating photovoltaic platform. The connecting node is characterized by comprising a rigid fixing structure part, a connecting structure part and an anti-separation part, the rigid fixed structure part is fixed on the floating body platform; the connecting structure part is mounted on the rigid fixing structure part; the connecting structure parts are connected in a running fit manner; and the anti-separation part limits the connecting structure part on the rigid fixing structure part. The floating body platform structure has the characteristics of rigidity and softness, and can rotate at a certain angle, so that the relative angular displacement between the platforms is realized, the floating type photovoltaic power station has the wave following property, meanwhile, the floating body platform structure has certain tensile and compressive bearing capacity, mutual extrusion between floating body platform structures is prevented, and the floating body platform structure has the advantages of safety, convenience and rapidness in maintenance and replacement.

Description

(1) Technical field:

[0001] The present invention belongs to the technical field of offshore photovoltaic power generation, and in particular relates to a replaceable and rotatable ear-plate connection node between floating structures of an offshore floating photovoltaic platform. (2) Background technology:

[0002] Marine new energy is an emerging strategic industry to promote the green and low-carbon development of the ocean. In recent years, it has shown strong growth momentum, great development space and potential, and has become a leader in the marine economy.

[0003] Marine renewable energy primarily includes ocean solar energy, wind energy, wave energy, tidal energy, and marine biomass energy. Given my country's extensive coastline and vast offshore waters, the theoretically feasible ocean area for offshore photovoltaic development reaches approximately 710,000 square kilometers, allowing for installation of over 100 gigawatts of offshore photovoltaic capacity. By researching and overcoming the technical challenges of offshore photovoltaics and fully utilizing offshore solar energy, my country's power generation mix can be significantly improved, promoting the development of clean energy.

[0004] Currently, offshore photovoltaic power stations are primarily classified into three types: fixed, semi-submersible, and floating. Fixed photovoltaic power stations are typically located in shallow waters and on mudflats. Semi-submersible photovoltaic power stations are more stable, but their higher cost makes them unsuitable for large-scale, high-capacity photovoltaic projects. Floating photovoltaic power stations are suitable for medium and deep waters, offer large capacity, and can be constructed over large areas. They maximize the utilization of marine solar energy and are relatively inexpensive. Therefore, the research and development of floating photovoltaic structures has become a hot topic.

[0005] Since large-capacity floating photovoltaic power plants cannot be realized with a single giant platform support structure, they require multiple interconnected platforms. Therefore, the connection between the platform structures is crucial to ensuring the operation of the photovoltaic power plant. Floating photovoltaic power plants operate in a complex and volatile marine environment, driven by the combined effects of wind, waves, and currents. This not only requires sufficient load-bearing capacity for the platform structures themselves, but also places high demands on the connection structures. Firstly, floating platforms are constantly exposed to waves and require a certain degree of wave-following performance. This requires that the connection nodes between the platforms can achieve a certain rotation angle to achieve relative angular displacement between the platforms. Secondly, the floating platforms must be reliably connected to ensure the proper operation of the photovoltaic power plant's electrical system, which requires the connection nodes to have a good load-bearing capacity. Furthermore, connection nodes are subject to heavy loads at sea and are subject to severe marine corrosion. Therefore, safe and convenient maintenance and replacement are also key considerations in the design of connection nodes.

[0006] At present, the main connection methods for offshore floating structures are: rigid connection using steel or concrete, and flexible connection using cables. The floating platform with rigid connection has poor wave-following performance and is difficult to replace after damage. For large-area floating platforms, the use of a purely flexible connection method cannot solve the collision problem between floating platform structures. Based on the above requirements for the connection nodes between floating offshore platforms, there is an urgent need to develop a simple connection node device with both rigid and flexible characteristics. On the one hand, it can effectively solve the above-mentioned force problem, and at the same time, it is easy to replace at sea when damaged under complex working conditions at sea. (3) Summary of the invention:

[0007] The purpose of the present invention is to provide a replaceable and rotatable ear-plate connection node between the floating structures of an offshore floating photovoltaic platform. It can solve the technical problems existing in the prior art, has the characteristics of both rigidity and flexibility, can achieve a certain angle of rotation, thereby realizing relative angular displacement between platforms, so that the floating photovoltaic power station has the ability to follow the waves. At the same time, it also has a certain tensile and compressive bearing capacity to prevent mutual squeezing between the floating platform structures, and has the advantages of safe and convenient maintenance and replacement.

[0008] To achieve the above-mentioned purpose, the technical solution of the present invention is: a replaceable and rotatable ear-plate connection node between the floating structures of an offshore floating photovoltaic platform, characterized in that it includes a rigid fixed structure part, a connection structure part, and an anti-detachment part; the rigid fixed structure part is fixed on the floating platform; the connection structure part is installed on the rigid fixed structure part; the connection structure parts are connected to each other and are rotatable hinged structures with each other; the anti-detachment part limits the connection structure part to the rigid fixed structure part.

[0009] The rigid fixed structure part is a slotted steel pipe welded to the structural member of the floating platform.

[0010] The interior of the slotted steel pipe is a cavity for installing the connecting structure part, with slots on the side and holes on the top; the parts of the connecting structure part that are connected to each other are placed in the slots; and the anti-separation part is installed in the hole.

[0011] The connecting structure parts are components respectively installed on different rigid fixed structure parts to form a rotatable hinge structure.

[0012] The connecting structure part includes a convex component and a concave component respectively installed on different rigid fixed structure parts. The convex component and the concave component are assembled with each other and connected by bolts and nuts. The convex component and the concave component can rotate around the bolts as the axis.

[0013] The protruding portion of the convex component is embedded in the concave portion of the concave component. The protruding portion and the concave portion are provided with corresponding connecting holes. Bolts are inserted into the connecting holes, and the bolts are tightly matched with nuts.

[0014] The male and female components are mounted on the slotted steel pipe.

[0015] The convex part and the concave part are both cast parts, and are both made of steel plates and elastic anti-collision buffer materials through casting.

[0016] The steel plates include convex steel plates and concave steel plates.

[0017] The anti-separation part is an anti-falling screw installed on the rigid fixed structure part. After the connecting structure part is installed on the rigid fixed structure part, the anti-falling screw limits the connecting structure part to the rigid fixed structure part.

[0018] The anti-falling screw passes through the upper circular hole of the slotted steel pipe and is fastened by a nut to limit the convex component and the concave component to prevent the convex component and the concave component from falling off the slotted steel pipe.

[0019] An elastic buffer gasket is arranged between the anti-falling screw and the convex component and the concave component.

[0020] The beneficial effects that can be achieved by the present invention are:

[0021] (1) A replaceable and rotatable ear-plate connection node between the floating structures of an offshore floating photovoltaic platform has the characteristic of being rotatable, which can release the degree of freedom, so that the two floating photovoltaic platform floats side by side can shift relative to each other in the vertical position when facing the waves, forming a vertical swinging motion effect, so that the entire photovoltaic power station can have better wave-following performance in the wave field of the ocean.

[0022] (2) A replaceable and rotatable ear-plate connection node between the floating structures of an offshore floating photovoltaic platform has the characteristic that the bearing capacity can be adjusted according to demand. The internal steel plate structure can change the thickness and size of the steel plate according to demand, providing the necessary tensile and compressive resistance for the connection node.

[0023] (3) A replaceable and rotatable ear-plate connection node between the floating structures of an offshore floating photovoltaic platform has the characteristics of safe and quick installation and disassembly. Compared with the traditional welded rigid connection and the flexible connection of the cable, this feature has the advantages of simple, convenient and safe installation. When the connection node is damaged, the convenient and quick replaceability greatly ensures the smooth operation of the entire photovoltaic platform.

[0024] (4) A replaceable and rotatable ear-plate connection node between the floating structures of an offshore floating photovoltaic platform has the characteristic of buffering impact. This characteristic is achieved by forming a cylindrical structure at both ends of the connecting structural component through the elastic material around the connecting component and pouring the anti-collision elastic material between the connecting component and the fixed steel pipe. This not only saves steel and reduces the weight of the connection node, but also plays a role in reducing friction and buffering impact. (4) Description of the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the overall assembly of the connection node.

[0026] Figure 2 This is the top view of the overall assembly of the connection node.

[0027] Figure 3 for Figure 2 AA cross-section diagram.

[0028] Figure 4 Schematic diagram of the rigid fixed structure.

[0029] Figure 5 It is a schematic diagram of the connection structure.

[0030] Figure 6 Schematic diagram of the convex steel plate structure.

[0031] Figure 7 Schematic diagram of convex casting parts.

[0032] Figure 8 Schematic diagram of concave steel plate structure.

[0033] Figure 9 Schematic diagram of concave casting parts.

[0034] In the figure: 1. Structural components of floating platform I; 2. Slotted round steel pipe on floating platform I; 3. Anti-falling screw; 4. Double nut; 5. Connecting structure; 51. Convex casting component; 511. Elastic anti-collision buffer material; 512. Convex steel plate; 52. Concave casting component; 521. Concave steel plate; 522. Elastic anti-collision buffer material; 53. Bolt; 54. Nut; 6. Elastic buffer pad; 7. Slotted round steel pipe on floating platform II; 8. Structural components of floating platform II. (V) Specific implementation methods:

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0036] Example: Figures 1 to 3As shown, a replaceable and rotatable ear-plate connection node between floating structures of an offshore floating photovoltaic platform includes a rigid fixed structure part, a connection structure part, and an anti-detachment part.

[0037] The rigid fixing portion is as follows Figure 4 As shown, the slotted round steel pipe 2 on the floating platform I is welded to the structural member 1 of the floating platform I, and the slotted round steel pipe 7 on the floating platform II is welded to the structural member 8 of the floating platform II.

[0038] Taking the offshore floating steel structure as an example, the steel structures at the connection are the structural member 1 of the floating platform I and the structural member 8 of the floating platform II. On land, the slotted circular steel pipes 2 and the slotted circular steel pipes 7 are welded to the corners of the structural member 1 of the floating platform I and the structural member 8 of the floating platform II, respectively, to complete the construction of the base.

[0039] The connecting structure part 5 is as follows Figure 5 As shown in FIG, after the convex casting part 51 and the concave casting part 52 are assembled, the bolt 53 passes through the connection hole and is fastened with the nut 54 to complete the connection. Figure 6 、 7 As shown, it is completed by pouring the convex steel plate 512 and the elastic anti-collision buffer material 511. The concave casting part 52 is as shown in FIG. Figure 8 、 9 As shown, it is cast by concave steel plate 521 and elastic anti-collision buffer material 522. The connection structure part 5 thus formed, wherein the convex casting part 51 and the concave casting part 52 can rotate around the bolt 53 in the connection hole.

[0040] The production and connection process of the convex casting part 51 and the concave casting part 52 is as follows: first, the convex casting part 51 and the concave casting part 52 are respectively processed into Figure 6 The convex steel plate 512 shown and Figure 8 The tail of the concave steel plate 521 is placed in a matching cylindrical mold, and the elastic anti-collision buffer material 511 and the elastic anti-collision buffer material 522 are poured into the mold to form a cylindrical mold. Figure 7 、 9 The convex casting part 51 and the concave casting part 52 are shown. Align the convex arc in the middle of the convex steel plate 512 with the concave arc in the middle of the concave steel plate 521, and align the concave arcs on both sides of the convex steel plate 512 with the protruding arcs on both sides of the concave steel plate 521. Use bolts 53 to pass through the connection holes of the convex steel plate 512 and the concave steel plate 521 at the same time, and tighten them with nuts 54 on the other side to complete the assembly of the connecting part 5.

[0041] During the specific implementation process, the two cylindrical parts of the convex cast part 51 cast by the elastic anti-collision buffer material 511 and the convex steel plate 512 and the concave cast part 52 cast by the elastic anti-collision buffer material 522 and the concave steel plate 521 in the connecting part 5 are respectively placed in the slotted round steel pipe 2 on the floating platform I and the slotted round steel pipe 7 on the floating platform II, and a layer of elastic buffer gasket 6 is placed on top of them. The convex arc in the middle of the convex steel plate 512 and the concave arc in the middle of the concave steel plate 521 are respectively placed in the grooves of the slotted round steel pipe 2 on the floating platform I and the slotted round steel pipe 7 on the floating platform II. Then, the anti-falling screw 3 is passed through the circular holes on the upper part of the slotted round steel pipe 2 on the floating platform I and the slotted round steel pipe 7 on the floating platform II and fastened by the double nut 4, so as to achieve the purpose of preventing the connection structure from jumping out of the rigid fixed structure.

[0042] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Any changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are within the scope of protection of the present invention.

Claims

1. A replaceable and rotatable ear-plate connection node between floating structures of an offshore floating photovoltaic platform, characterized in that It includes a rigid fixed structure part, a connecting structure part, and an anti-detachment part; the rigid fixed structure part is fixed on the floating platform; the connecting structure part is installed on the rigid fixed structure part; the connecting structure parts are connected in a rotationally fitting manner; the anti-detachment part limits the connecting structure part to the rigid fixed structure part.

2. The replaceable and rotatable ear-plate connection node between floating structures of an offshore floating photovoltaic platform according to claim 1 is characterized in that The rigid fixed structure part is a slotted steel pipe welded to the structural member of the floating platform.

3. The replaceable and rotatable ear-plate connection node between floating structures of an offshore floating photovoltaic platform according to claim 1 is characterized in that The connecting structure parts are components respectively installed on different rigid fixed structure parts to form a rotatable hinge structure.

4. The replaceable and rotatable ear-plate connection node between floating structures of an offshore floating photovoltaic platform according to claim 1 or 3, characterized in that The connecting structure part includes a convex component and a concave component respectively installed on different rigid fixed structure parts. The convex component and the concave component are assembled with each other and connected by bolts and nuts. The convex component and the concave component can rotate around the bolts as the axis.

5. The replaceable and rotatable ear-plate connection node between floating structures of an offshore floating photovoltaic platform according to claim 4 is characterized in that The protruding portion of the convex component is embedded in the concave portion of the concave component. The protruding portion and the concave portion are provided with corresponding connecting holes. Bolts are inserted into the connecting holes, and the bolts are tightly matched with nuts.

6. The replaceable and rotatable ear-plate connection node between floating structures of an offshore floating photovoltaic platform according to claim 4 is characterized in that The convex part and the concave part are both cast parts, and are both made of steel plates and elastic anti-collision buffer materials through casting.

7. The replaceable and rotatable ear-plate connection node between floating structures of an offshore floating photovoltaic platform according to claim 1 is characterized in that The anti-separation part is an anti-falling screw installed on the rigid fixed structure part. After the connecting structure part is installed on the rigid fixed structure part, the anti-falling screw limits the connecting structure part to the rigid fixed structure part.

8. The replaceable and rotatable ear-plate connection node between floating structures of an offshore floating photovoltaic platform according to claim 7 is characterized in that The anti-falling screw passes through the upper circular hole of the slotted steel pipe and is fastened by a nut to limit the convex component and the concave component to prevent the convex component and the concave component from falling off the slotted steel pipe.

9. The replaceable and rotatable ear-plate connection node between floating structures of an offshore floating photovoltaic platform according to claim 7, characterized in that An elastic buffer gasket is arranged between the anti-falling screw and the convex component and the concave component.

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