Offshore photovoltaic floating block structure

Abstract

The invention belongs to the technical field of offshore photovoltaic power generation, and discloses an offshore photovoltaic floating block structure which comprises a steel frame, a floating body, a bamboo plate and a blocking strip assembly, the floating body is clamped in the steel frame, the bamboo plate is connected to the floating body, the blocking strip assembly is connected to one end, close to the seabed, of the bamboo plate, the floating body is composed of four small floating blocks, and the blocking strip assembly is connected to the other end of the bamboo plate. Each small floating block is composed of a foam floating block and membrane cloth, the membrane cloth covers the surface of the foam floating block, and a plurality of carbonized bamboos are embedded in the foam floating block to serve as a framework for supporting. The floating island structure is formed by the steel frame and the foam floating bodies, so that the situation that the gravity center of the floating island structure is too high is avoided, and the service life of the floating island structure is prolonged; therefore, the overall stability of the floating island structure is ensured, and the floating island structure is effectively prevented from rollover.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of offshore photovoltaic power generation, and particularly relates to an offshore photovoltaic floating block structure. BACKGROUND

[0002] Generally, a large land photovoltaic project needs to occupy a large amount of land area and land resources, while offshore photovoltaic power generation is a new energy utilization mode and resource development mode, has the characteristics of high power generation, less land occupation, easy combination with other industries and the like; marine photovoltaic power generation has natural environmental advantages, the water surface is open and has no shelter, the sunshine is long and the reflected light on the water surface is fully utilized, so that the power generation can be significantly improved; offshore photovoltaic power stations are divided into two categories of pile foundation fixed type and floating type; generally, if the water depth is less than 5 m, the pile frame high type installation is adopted, and if the water depth is more than 5 m, the floating type installation can be adopted.

[0003] An application No. 202210497244.X discloses a semi-submersible offshore photovoltaic power generation platform and an offshore photovoltaic power generation array. The semi-submersible offshore photovoltaic power generation platform comprises a platform frame, photovoltaic panels, floating island columns, a support assembly and at least two connecting pieces. The platform frame is in a space truss structure, comprising a plurality of connecting rods; each connecting rod is in a hollow tubular structure; the peripheral side surface of the platform frame is inclined inward from top to bottom; a plurality of floating island columns are located below the platform frame and are arranged one by one corresponding to the edges or corners of the cross-sectional shape of the platform frame; each floating island column can float on the sea level, and part of the floating island column is located below the sea level and part of the floating island column is located above the sea level; however, in the technical solution, the bottom floating structure of the floating disc is formed by the fixed connection of the floating tube and the truss; in this way, the weight of the top of the floating disc is large, the weight of the bottom of the floating disc is small, and the center of gravity is difficult to keep stable, so that the stability of the floating disc is difficult to keep.

[0004] Therefore, it is necessary to solve the above problems by using an offshore photovoltaic floating block structure. SUMMARY

[0005] The purpose of the present application is to solve the above problems, and the present application provides an offshore photovoltaic floating block structure, which has the advantages of high stability and convenient installation.

[0006] To achieve the above purpose, the present application provides the following technical scheme: an offshore photovoltaic floating block structure, comprising a steel frame, a floating body, a bamboo board and a baffle assembly, the floating body is connected in the steel frame, the bamboo board is connected on the floating body, and the baffle assembly is connected on one end of the bamboo board close to the seabed. The floating body is composed of four small floating blocks, the small floating blocks are composed of foam floating blocks and film cloth, the film cloth is wrapped on the surface of the foam floating block, and a plurality of carbonized bamboos are embedded in the foam floating block as a framework to play a supporting role.

[0007] Preferably, the steel frame comprises a rectangular frame, a corner steel frame is connected to the rectangular frame, hoop angle steels are connected to the four side walls of the rectangular frame, and a plurality of inclined braces for improving the structural strength are connected to the end of the rectangular frame away from the floating body.

[0008] Preferably, a plurality of short purlins and a plurality of long purlins are connected to the surface of the steel frame, the plurality of short purlins and the plurality of long purlins are located at the end of the floating block away from the baffle assembly, and the plurality of long purlins are arranged in an array on the steel frame to facilitate the installation and fixation of solar panels.

[0009] Preferably, connecting lug plates are arranged outside the four corners of the steel frame, and a plurality of mooring lug plates are connected to the edges of the steel frame, the positions of the mooring lug plates do not interfere with the connecting lug plates.

[0010] Preferably, the baffle assembly comprises two baffles, and each baffle is fixed to the frame through a bolt assembly.

[0011] Preferably, the bamboo plate is composed of two long bamboo plates and two short bamboo plates.

[0012] Preferably, a counterweight is connected to the side of the small floating block close to the seabed, and a cavity is formed in the counterweight.

[0013] Preferably, an elastic buffer layer is connected between the counterweight and the small floating block.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows: 1. The present application forms a floating island structure by setting a steel frame and a foam floating body, avoids the high center of gravity of the floating island structure, and thus ensures the stability of the whole floating island structure and effectively prevents the floating island structure from rolling over.

[0015] 2. The present application fixes the foam floating body in the steel frame by setting a bamboo plate and a baffle, and the whole structure is simple, convenient to install and maintain, and the connecting lug plates can be used to connect multiple floating island structures to realize the large-scale application of offshore photovoltaic power generation.

[0016] 3. The counterweight can be used to flexibly adjust the center of gravity of the floating body according to different sea conditions, enhance the stability, prevent the floating body from rolling over, and ensure the safe operation of the system, and the elastic buffer layer can effectively absorb and disperse the impact energy of sea waves, reduce the floating body from shaking and fatigue damage, and prolong the service life; the overall design improves the stability and durability of the offshore photovoltaic floating block structure, provides a more reliable floating body platform for offshore photovoltaic power generation, and guarantees the power generation efficiency and system life. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1This is a schematic diagram of the upper part of the overall structure of the floating island of the present invention; Figure 2 This is a schematic diagram of the bottom of the overall structure of the floating island of the present invention; Figure 3 This is a schematic diagram of the angle steel frame structure of the floating island of the present invention; Figure 4 This is a schematic diagram of the floating structure of the floating island of the present invention; Figure 5 This is a schematic diagram of the bamboo board and baffle structure at the bottom of the floating island of the present invention; Figure 6 This is a schematic diagram of the connection structure of the counterweight block of the present invention; Figure 7 This is a cross-sectional structural diagram of the counterweight block of the present invention.

[0018] Figure descriptions: 1. Steel frame; 11. Connecting ear plate; 12. Short purlin; 13. Angle steel frame; 14. Long purlin; 15. Diagonal brace; 16. Mooring ear plate; 17. Rectangular frame; 18. Clamping angle steel; 2. Float; 21. Small float; 211. Membrane fabric; 212. Foam float; 213. Carbonized bamboo; 3. Bamboo board; 31. Long bamboo board; 32. Short bamboo board; 4. Baffle assembly; 41. Baffle; 42. Bolt assembly; 5. Counterweight; 6. Elastic buffer layer. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1-5 As shown, the present invention provides a marine photovoltaic floating block structure, including a steel frame 1, a floating body 2, a bamboo panel 3, and a baffle assembly 4.

[0021] A float 2 is fitted inside the steel frame 1, and a bamboo board 3 is connected to the float 2. The bamboo board 3 is connected in the following ways: the bamboo board 3 is only connected to the end of the float 2 that is close to the seabed, or the bamboo board 3 is connected to both the upper and lower ends of the float 2 that are in contact with the seawater. A baffle assembly 4 is connected to the end of the bamboo board 3 that is close to the seabed. That is, when installed and used, the baffle assembly 4 is located below the sea level. The bamboo board 3 and the baffle assembly 4 can effectively prevent the float 2 from falling out of the steel frame 1.

[0022] The floating body 2 is composed of four small floating blocks 21, each of which is composed of a foam floating block 212 and a film cloth 211 wrapped around the surface of the foam floating block 212. A plurality of carbonized bamboo 213 is embedded in the foam floating block 212 as a framework to support and improve the strength of the small floating block 21.

[0023] The bamboo board 3 serves as a transition for force transmission between the steel frame 1 and the foam floating block 212, preventing damage to the foam floating block 212 caused by the edges of the steel frame 1. The bamboo board 3 allows the force to be evenly transmitted between the parts.

[0024] As shown in Figures 6-7 The small floating block 21 is provided with a weight-adjustable counterweight 5 at the bottom. The counterweight 5 is made of high-strength and corrosion-resistant composite material, with a hollow structure inside, and the hollow cavity is connected to seawater, so as to control the weight of the counterweight 5 by the volume of seawater in the hollow cavity.

[0025] By adjusting the filling amount of water in the hollow cavity, the center of gravity of the floating body 2 can be accurately adjusted, so that the entire floating body 2 can maintain optimal stability under different working conditions, avoiding tilting or overturning of the floating body 2 caused by excessive center of gravity or unreasonable distribution.

[0026] A layer of elastic buffer layer 6 is added between the small floating block 21 and the counterweight 5. The elastic buffer layer 6 is made of high-elasticity silicon rubber material resistant to seawater corrosion, with a thickness of about 20-30mm. A large number of micro airbags with a diameter of 5-10mm are uniformly distributed on the surface of the elastic buffer layer 6. The micro airbags are filled with air or inert gas, which can provide good buffering effect when the sea waves impact.

[0027] When the sea waves impact the floating body 2, the impact force is first transmitted to the elastic buffer layer 6, and the micro airbags in the elastic buffer layer 6 are elastically deformed to absorb and disperse the impact energy, thereby effectively reducing the shaking amplitude of the floating body 2.

[0028] At the same time, the elastic buffer layer 6 also has a certain damping effect, which can reduce the vibration frequency and amplitude of the floating body 2 in the sea waves, protect the foam floating block 212 and carbonized bamboo 213 inside the floating body 2 from excessive stress, and prolong the service life of the floating body 2.

[0029] In addition, the elastic buffer layer 6 can also adapt to the deformation requirements of the floating body 2 under different sea conditions, ensuring the close fit between the floating body 2 and the steel frame 1, and improving the integrity and stability of the entire floating block 2 structure.

[0030] In order to ensure the reliable connection between the counterweight 5 and the elastic buffer layer 6 and the floating body 2, a groove type connected with the elastic buffer layer 6 is arranged at the bottom of the small floating block 21, and after curing, a firm bonding layer is formed to tightly combine the elastic buffer layer 6 and the floating body 2 into one, so that the falling or loosening phenomenon does not occur under the long-term sea wave impact and seawater immersion, and the counterweight 5 is fixedly connected with the elastic buffer layer 6, so as to ensure the stability of the counterweight 5.

[0031] Further, the steel frame 1 comprises a rectangular frame 17, the rectangular frame 17 is connected with the angle steel frame 13, the steel frame 1 is in a whole rectangular shape, the rectangular frame 17 and the angle steel frame 13 are welded into one, the hoop angle steel 18 is arranged on the four peripheral side walls of the rectangular frame 17, and a plurality of inclined braces 15 for improving the structural strength are arranged on the end of the rectangular frame 17 away from the floating body 2.

[0032] Further, a plurality of short purlins 12 and a plurality of long purlins 14 are arranged on the surface of the steel frame 1, the plurality of short purlins 12 and the plurality of long purlins 14 are arranged on the end of the floating block 2 away from the baffle assembly 4, and the plurality of long purlins 14 are arranged in an array on the steel frame 1 to facilitate the installation and fixation of the solar panel connection.

[0033] It should be noted that in the present application, the long and short description modes are all relative, and the specific length can be controlled according to the environment in the actual use process, which is not limited here.

[0034] Further, the connecting lug plates 11 are arranged on the four corners of the outer side of the steel frame 1, which are used for connecting with other floating island structures, a plurality of mooring lug plates 16 are arranged on the edges of the steel frame 1, which are used for mooring the floating island structure, and the positions of the mooring lug plates 16 do not interfere with the connecting lug plates 11.

[0035] Further, the baffle assembly 4 is composed of two baffles 41, and each baffle 41 is fixed on the frame through a bolt assembly 42.

[0036] Further, the bamboo board 3 is spliced by two long bamboo boards 31 and two short bamboo boards 32.

[0037] In use, the counterweight of the counterweight 5 is controlled according to the environmental characteristics of the sea surface and the floating state of the floating body 2: In the calm sea area, when the sea wave is small, the floating body 2 mainly relies on the buoyancy and the gravity of the counterweight to keep stable. The weight of the counterweight 5 makes the center of gravity of the floating body 2 lower, and enhances the stability of the structure of the small floating block 21.

[0038] At this time, the floating body 2 has a small amplitude of oscillation on the sea surface, and can stably support the solar panels to generate electricity. The adjustable counterweight 5 also enables the small floating block 21 structure to adapt to the installation of solar panels and other equipment of different weights, ensuring the balance of the overall structure.

[0039] In complex sea areas, when encountering large waves, the weight of the counterweight 5 can effectively resist the overturning moment of the floating body 2 caused by wave impact. By adjusting the sea water volume in the counterweight 5, the center of gravity of the floating body 2 can be further optimized, so that the small floating block 21 structure remains stable in strong waves, avoiding the tilting or overturning of the small floating block 21 due to a too high or unstable center of gravity. For example, in deep water areas or sea areas with frequent storms, increasing the sea water volume in the counterweight 5 can enhance the stability of the floating body 2, ensuring the safe operation of the offshore photovoltaic system.

[0040] When the waves impact the floating body 2, the elastic buffer layer 6 begins to play its buffering role. The impact force of the waves is transmitted to the surface of the floating body 2, and the micro airbags in the elastic buffer layer 6 are elastically deformed, absorbing and dispersing the impact energy, which effectively relieves the impact force on the floating body 2, reduces the amplitude of oscillation of the floating body 2, and reduces the risk of fatigue damage of the floating body 2 due to frequent oscillation.

[0041] At the same time that the floating body 2 is impacted by the waves, the elastic buffer layer 6 can also reduce the collision and friction between the floating body 2 and the counterweight 5. Due to the relative movement between the floating body 2 and the counterweight 5, the presence of the elastic buffer layer 6 makes the contact between the two more gentle, avoiding structural damage that may be caused by hard impact. In addition, the elastic buffer layer 6 can also adapt to the deformation requirements of the floating body 2 in different sea conditions, improving the integrity and stability of the entire small floating block 21 structure.

[0042] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or device that includes a series of elements not only includes those elements, but also includes other elements not explicitly listed, or inherent to such a process, method, article, or device.

[0043] Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An offshore photovoltaic pontoon structure, characterized by: Including steel frame (1), floating body (2), bamboo board (3) and fender assembly (4), the steel frame (1) is connected with floating body (2), the floating body (2) is connected with bamboo board (3), the bamboo board (3) is connected with fender assembly (4) on the end near the seabed. The floating body (2) is composed of four small floating blocks (21), the small floating block (21) is composed of a foam floating block (212) and a film cloth (211), the film cloth (211) is wrapped on the surface of the foam floating block (212), and a plurality of carbonized bamboo (213) is embedded in the foam floating block (212) as a framework to support.

2. A floating photovoltaic structure for use offshore according to claim 1, characterized in that: The steel frame (1) includes a rectangular frame (17), the rectangular frame (17) is connected with an angle steel frame (13), the rectangular frame (17) is connected with a hoop angle steel (18) on the four side walls, and a plurality of inclined braces (15) for improving the structural strength are connected on the end of the rectangular frame (17) away from the floating body (2).

3. A floating photovoltaic structure according to claim 2, wherein: A plurality of short purlins (12) and a plurality of long purlins (14) are connected on the surface of the steel frame (1), the plurality of short purlins (12) and the plurality of long purlins (14) are located on the end of the floating block (2) away from the fender assembly (4), and the plurality of long purlins (14) are arrayed on the steel frame (1) to facilitate the installation and fixation of solar panels.

4. A floating photovoltaic structure according to claim 3, wherein: The connecting lug plates (11) are arranged on the outer side of the four corners of the steel frame (1), and a plurality of mooring lug plates (16) are connected on the edge of the steel frame (1), and the position of the mooring lug plate (16) does not interfere with the connecting lug plate (11).

5. The offshore photovoltaic float structure according to claim 1, wherein: The fender assembly (4) includes two fenders (41), and each fender (41) is fixed on the frame through a bolt assembly (42) on both sides.

6. A floating photovoltaic structure for use offshore according to claim 1, wherein: The bamboo board (3) is composed of two long bamboo boards (31) and two short bamboo boards (32).

7. A floating photovoltaic structure according to claim 1, wherein: The counterweight block (5) is connected on the side of the small floating block (21) near the seabed.

8. A floating photovoltaic structure according to claim 7, wherein: The elastic buffer layer (6) is connected between the counterweight block (5) and the small floating block (21).

Images