Marine photovoltaic panel support device and installation method

Abstract

The present application relates to the technical field of offshore photovoltaic, in particular to a kind of offshore photovoltaic panel support device and installation method.A kind of offshore photovoltaic panel support device, comprising: placement truss, the placement truss is suitable for placing photovoltaic panel;Connecting assembly, the connecting assembly includes at least three connecting columns, one end of each connecting column is connected with the placement truss, the other end is suitable for being connected with the pile foundation that protrudes from sea level.The present application provides a kind of offshore photovoltaic panel support device and installation method, to solve the need to face weather condition offshore construction photovoltaic, wind load is big and other adverse working conditions, the top of pile foundation is often set again with the guide pipe frame body to connect the pile foundation of different positions, with the guide pipe frame body and photovoltaic panel truss are connected, once the distance between pile foundation is larger, greatly increase the cost of enterprise problem.

Description

Technical Field

[0001] This invention relates to the field of marine photovoltaic technology, specifically to a marine photovoltaic panel support device and installation method. Background Technology

[0002] With the introduction of the national "dual carbon" indicators, China is vigorously promoting photovoltaic power generation technology. Eastern my country has vast sea areas, making offshore photovoltaic power plants a viable option for new energy development. Unlike onshore conditions, offshore photovoltaic construction faces harsh weather conditions and heavy wind loads. A jacket structure is often installed above the pile foundations to connect the piles at different locations, linking them to the photovoltaic panel trusses. Large spacing between pile foundations can significantly increase costs for businesses. Summary of the Invention

[0003] This invention provides a support device and installation method for offshore photovoltaic panels to address the challenges of harsh weather conditions and heavy wind loads encountered during offshore photovoltaic construction. Often, a guide frame is installed above the pile foundations to connect the pile foundations at different locations. The guide frame is then connected to the photovoltaic panel truss. If the spacing between the pile foundations is large, this significantly increases the company's costs.

[0004] In a first aspect, the present invention provides a marine photovoltaic panel support device, comprising: A placement truss, the placement truss being adapted to hold photovoltaic panels; A connecting assembly comprising at least three connecting columns, one end of each connecting column being connected to the placement truss, and the other end being adapted to connect to a pile foundation extending above sea level.

[0005] Beneficial effects: By connecting the column to the pile foundation, there is no need to use a guide frame, which realizes the direct connection between the column and the pile foundation. While ensuring the connection strength, it can effectively reduce enterprise costs.

[0006] In one alternative implementation, one of the connecting columns corresponds to one of the pile foundation settings.

[0007] In one alternative embodiment, each of the connecting columns is provided with a column base plate facing the pile foundation, and the column base plate is connected to the pile top plate of the pile foundation by fasteners.

[0008] In one optional embodiment, the connecting column is provided with a first through hole, and the pile top plate is provided with a second through hole. The first through hole and the second through hole are provided correspondingly. The inner diameter of the first through hole is larger than the outer diameter of the fastener, and the inner diameter of the first through hole is smaller than the inner diameter of the second through hole.

[0009] In one optional embodiment, a fixing plate assembly is further included, wherein a pile top rib is provided on the side of the pile top plate opposite to the column base plate, and the fixing plate assembly is provided on the side of the pile top rib opposite to the pile top plate, and the fixing plate assembly is connected to the fastener.

[0010] In one alternative embodiment, the fixing plate assembly includes at least two fixing sub-plates, which are fitted onto the outer periphery of the pile foundation, and each fixing sub-plate is connected to the fastener.

[0011] In one alternative embodiment, the placement truss includes a frame truss portion that is connected to the connecting column.

[0012] In one alternative embodiment, the placement truss further includes several planar truss sections and several purlins, wherein the planar truss sections are arranged perpendicularly to the purlins.

[0013] In one alternative embodiment, each of the planar truss sections includes a first upper chord, a first lower chord, and a first web member, wherein the first web member is connected to the first upper chord and the first lower chord, and the first upper chord is connected to the purlin.

[0014] Secondly, the present invention also provides an installation method for a marine photovoltaic panel support device, wherein the placement truss and connecting columns are prefabricated in the factory, and during on-site installation, the connecting columns and pile foundations are aligned and connected, and the photovoltaic panels are placed on the surface of the placement truss. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of a marine photovoltaic panel support device according to an embodiment of the present invention; Figure 2 This is a schematic diagram showing the connection between the planar truss section and the purlin in an embodiment of the present invention; Figure 3 This is a detailed schematic diagram showing the connection between the planar truss section and the purlin in an embodiment of the present invention; Figure 4 This is a schematic diagram of the connection between the connecting column and the pile foundation according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the column base plate in an embodiment of the present invention; Figure 6This is a schematic diagram of the pile top plate according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the fixed plate assembly in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1. Truss placement; 101. Frame truss section; 102. Purlin; 103. Planar truss section; 1031. First upper chord; 1032. First web member; 1033. First lower chord; 104. Diagonal brace; 2. Connecting assembly; 201. First connecting column; 2011. Hollow column; 2012. Column base plate; 2013. Column base rib; 202. Second connecting column; 203. Third connecting column; 3. Pile foundation; 301. Hollow pile body; 302. Pile top rib; 303. Pile top plate; 304. Second through hole; 4. Fixing plate assembly; 401. Third through hole; 5. Fastener. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0019] The following is combined Figures 1 to 7 The following describes embodiments of the present invention.

[0020] According to an embodiment of the present invention, in one aspect, a marine photovoltaic panel support device is provided, comprising: a placement truss 1, the placement truss 1 being adapted to place photovoltaic panels; and a connecting assembly 2, the connecting assembly 2 comprising at least three connecting columns, one end of each connecting column being connected to the placement truss 1, and the other end being adapted to be connected to a pile foundation 3 extending above the sea surface.

[0021] By connecting the connecting column to the pile foundation 3, the need for a guide frame is eliminated, achieving a direct connection between the connecting column and the pile foundation 3. This effectively reduces enterprise costs while ensuring connection strength.

[0022] In this embodiment, as Figure 1 As shown, the connecting assembly 2 includes a first connecting post 201, a second connecting post 202, a third connecting post 203, and a fourth connecting post, wherein the first connecting post 201 and the second connecting post 202 are connected along... Figure 1 The first connecting post 201 and the third connecting post 203 are arranged along the Y direction. Figure 1 The second connecting post 202 and the fourth connecting post are arranged in the X direction. Figure 1The first connecting column 201 and the second connecting column 202 are at the same height, and the third connecting column 203 and the fourth connecting column are at the same height. The height of the first connecting column 201 is lower than the height of the third connecting column 203, so that the truss 1 is set at an angle relative to the horizontal plane.

[0023] In one embodiment, such as Figure 1 , Figure 4 As shown, one connecting column corresponds to one pile foundation 3, and the pile foundation 3 supports the connecting column. In this embodiment, a placement truss 1 is provided with four connecting columns to support the placement truss 1.

[0024] In one embodiment, such as Figure 4 , Figure 5 ,and Figure 6 As shown, each connecting column is provided with a column base plate 2012 facing the pile foundation 3. The column base plate 2012 is connected to the pile top plate 303 of the pile foundation 3 by fasteners 5. The column base plate 2012 and the pile top plate 303 are fitted together and fixed by fasteners 5. Specifically, the fasteners 5 are bolts, and the fixing is achieved by the cooperation of bolts and nuts.

[0025] In one embodiment, such as Figure 4 , Figure 5 ,and Figure 6 As shown, the connecting column has a first through hole, and the pile top plate 303 has a second through hole 304. The first through hole and the second through hole 304 are correspondingly arranged. The inner diameter of the first through hole is larger than the outer diameter of the fastener 5, and the inner diameter of the first through hole is smaller than the inner diameter of the second through hole 304. In this embodiment, the inner diameter of the first through hole is larger than the outer diameter of the fastener 5, and the inner diameter of the first through hole of the connecting column is larger than the outer diameter of the fastener 5. When the fastener 5 passes through the first through hole, there is a gap margin, which can be quickly inserted without precise alignment. This can compensate for the slight positional deviation between the connecting column and the pile top plate 303 during processing, manufacturing, and assembly, reduce the difficulty of on-site alignment and calibration, significantly shorten the assembly time of pile foundation components, and improve construction efficiency. However, for complex installation conditions at sea, if the inner diameter of the first through hole is the same as the inner diameter of the second through hole 304, that is, the size of the through hole will be slightly larger than the outer diameter of the fastener 5. Due to the difficulty of positioning and installation during construction, there is a problem that the first through hole and the second through hole 304 cannot be completely aligned (the central axes of the two through holes coincide), which makes it impossible to install the fastener 5. By making the inner diameter of the second through hole 304 larger than that of the first through hole, the fastener 5 can still be inserted even if the first through hole and the second through hole 304 cannot be completely aligned, thus reducing the installation difficulty.

[0026] In one embodiment, such as Figure 4 , Figure 5 ,and Figure 6As shown, it also includes a fixing plate assembly 4. A pile top rib 302 is provided on the side of the pile top plate 303 away from the column base plate 2012. The fixing plate assembly 4 is provided on the side of the pile top rib 302 away from the pile top plate 303. The fixing plate assembly 4 is connected to the fastener 5. The pile top plate 303 is provided above the pile top rib 302, and the fixing plate assembly 4 is connected to it below by the fastener 5.

[0027] In one embodiment, such as Figure 4 , Figure 5 ,and Figure 6 As shown, the fixing plate assembly 4 includes at least two fixing plates, which are fitted onto the outer periphery of the pile foundation 3. Each fixing plate is connected to a fastener 5. The fixing plates are arranged to enclose the fixing plate assembly 4 around the outer periphery of the pile foundation 3. In this embodiment, the number of fixing plates is two.

[0028] In this embodiment, the pile foundation 3 is a hollow steel pipe pile. The bottom of the pile foundation 3 enters the seabed bearing layer and acts as a pile and column. The top supports the upper platform through a conversion node. The length is generally greater than 20 meters. For greater economy, a variable diameter and variable thickness section is adopted. In order to ensure the local stability of the steel pile, the diameter-to-thickness ratio is not greater than 60.

[0029] In this embodiment, as Figure 4 As shown, the column base plate 2012 connecting the bottom of the column is equivalent to an end plate. To improve the load-bearing capacity of the plate, several triangular column base ribs 2013 are arranged circumferentially. Figure 4 As shown, eight bolt holes are arranged on the column base plate 2012. The diameter is conventionally designed and is 1mm-2mm larger than the outer diameter of the fastener 5.

[0030] In this embodiment, as Figure 4 , Figure 6As shown, the top of the pile foundation 3 is tapered, with a diameter identical to the cross-sectional area of ​​the connecting column, to facilitate connection. The top of the pile foundation 3 is equipped with a pile top plate 303, the same size as the column base plate 2012, which are tightly fitted together and connected by fasteners 5. Several square-plate-shaped pile top ribs are arranged below the pile top plate 303, the same number as the stiffening ribs in the column base plate 2012. These square plates are welded to the hollow pile body 301 and the pile top plate 303 respectively, improving the joint bearing capacity. The second through hole 304 of the pile top plate 303 has a larger diameter, 5cm-10cm larger than the outer diameter of the fastener 5, and can be even larger depending on construction errors, ensuring the bolt can pass through. In this embodiment, the fastener 5 passes sequentially through the column base plate 2012, the pile top plate 303, and the fixing plate before being connected to a nut to securely connect the connecting column and the pile foundation 3. It should be noted that in this embodiment, the number of first through holes provided on the column base plate 2012 is the same as the number of second through holes 304 provided on the pile top plate 303, and the number of second through holes 304 provided on the pile top plate 303 is the same as the number of third through holes 401 provided on the fixing plate group 4. One first through hole corresponds to one second through hole 304, and one second through hole 304 corresponds to one third through hole 401.

[0031] In this embodiment, facing a complex marine environment, when the platform is under the influence of wind suction, i.e., the placement truss 1 is subjected to an upward tensile force, the fastener 5 (bolt) only bears the tensile force, and the upward pull force is transmitted to the fixing plate through the bolt. The fixing plate is pressed against the square column top rib, and the pressure of the column top rib is transmitted to the pile body. When the platform is subjected to vertical pressure, i.e., the placement truss 1 is subjected to a vertical downward pressure, the force is transmitted through the compression between the column base plate 2012 and the pile top plate 303, and then to the pile foundation 3. At this time, the fastener 5 (bolt) does not bear the force. When the platform is subjected to a lateral horizontal force, i.e., the placement truss 1 is subjected to a lateral horizontal force, the friction force generated by the compression between the column base plate 2012 and the pile top plate 303 is balanced. The entire device has a reasonable and efficient force transmission mechanism at the nodes, the fastener 5 is not subjected to force, avoiding the complex stress damage of the fastener 5 (bolt), and has the advantage of long service life.

[0032] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 As shown, the truss 1 includes a frame truss section 101, which is connected to the connecting columns. In this embodiment, the frame truss section 101 is rectangular, with a connecting column at each of the four corners, which connects to the pile foundation 3.

[0033] In one embodiment, such as Figure 1 , Figure 2 , Figure 3As shown, the truss 1 also includes several planar truss sections 103 and several purlins 102, with the planar truss sections 103 and purlins 102 arranged perpendicularly. In this embodiment, as... Figure 1 As shown, the planar truss section 103 and the purlin 102 are both located within the space enclosed by the frame truss section 101, and the purlin 102 extends along... Figure 1 The X-direction setting in the middle, the planar truss part 103 along Figure 1 The Y-direction setting in [the context].

[0034] In one embodiment, such as Figure 2 , Figure 3 As shown, each planar truss section 103 includes a first upper chord 1031, a first lower chord 1033, and a first web member 1032. The first web member 1032 is connected to the first upper chord 1031 and the first lower chord 1033, respectively. The first upper chord 1031 is connected to the purlin 102. It should be noted that there are several first upper chords 1031, first lower chords 1033, and first web members 1032 to provide strong rigidity and load-bearing capacity within the planar truss section 103. The purlin 102 is arranged perpendicular to the planar truss section 103 and is connected to the first upper chord 1031 of the planar truss section 103, while also serving as an out-of-plane support for the first upper chord 1031. A diagonal brace 104 is arranged between the purlin 102 and the first lower chord 1033 at an angle of approximately 45 degrees. The purlin 102 serves as an out-of-plane support for the first lower chord 1033. The design of connecting the purlin 102 to the first upper chord 1031 and the first lower chord 1033 respectively effectively utilizes the high load-bearing capacity and rigidity of the truss, while cleverly ensuring the out-of-plane rigidity of the planar truss section 103, thereby reducing the number of members, simplifying the layout, and facilitating construction.

[0035] In this embodiment, the frame truss section 101 includes a second upper chord, a second lower chord, and a second web member. The second web member is connected to the second upper chord and the second lower chord, respectively. The frame truss section 101 is fixedly connected to the planar truss section 103 and the purlin 102 by welding.

[0036] An installation method for a marine photovoltaic panel support device includes the following steps: (1) The truss 1 and the connecting column are prefabricated in the factory and installed on site by hoisting to align and connect the connecting column and the pile foundation 3. (2) First, position the column base plate 2012 and the pile top plate 303, ensuring that the fastener 5 passes through the pile top plate 303, then rotate the fixing plate to allow the fastener 5 to pass through, and tighten the nut; (3) Then place photovoltaic panels of the corresponding size on the placement truss 1.

[0037] The present invention provides a marine photovoltaic panel support device with the following advantages: (1) It connects the connecting column and the pile foundation 3 without the need for a guide frame, realizing the direct connection between the connecting column and the pile foundation 3, and effectively reducing enterprise costs while ensuring connection strength; (2) By making the inner diameter of the second through hole 304 larger than that of the first through hole, the fastener 5 can still be inserted even when the first through hole and the second through hole 304 cannot be fully aligned, reducing the installation difficulty; (3) Facing the complex marine environment, when the platform is under the action of wind suction, that is, the truss 1 is subjected to upward tension, the fastener 5 (bolt) only bears the tension, and the upward pull force is transmitted to the fixing plate through the bolt. The fixing plate is pressed against the square column top rib, and the pressure of the column top rib is transmitted to the pile body; when the platform is subjected to vertical pressure, that is The truss 1 is subjected to vertical downward pressure, which is transmitted through the compression of the column base plate 2012 and the pile top plate 303. The force on the column base plate 2012 is transmitted to the pile top plate 303 and then to the pile foundation 3. At this time, the fastener 5 (bolt) is not affected. When the platform is subjected to lateral horizontal force, that is, when the truss 1 is subjected to lateral horizontal force, the friction force is balanced by the compression of the column base plate 2012 and the pile top plate 303. The entire device has a reasonable and efficient force transmission mechanism at the nodes, avoiding the complex stress damage of the fastener 5 (bolt), and has the advantage of long service life. (4) The design of connecting the purlin 102 to the first upper chord 1031 and the first lower chord 1033 respectively can effectively utilize the high bearing capacity and stiffness of the truss, and can also cleverly ensure the out-of-plane stiffness of the planar truss part 103, so as to reduce the number of members, and the arrangement is simple and easy to construct.

[0038] As an alternative implementation, the shape of the frame truss portion 101 can also be a square, a regular pentagon, a regular hexagon, etc., which can be set according to the actual working conditions.

[0039] As an alternative implementation, the connecting component 2 may also be provided with different numbers of connecting posts, such as three or five connecting posts.

[0040] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A support device for offshore photovoltaic panels, characterized in that, include: A placement truss (1) is provided, the placement truss (1) being adapted to place photovoltaic panels; The connecting component (2) includes at least three connecting columns, one end of each connecting column being connected to the placement truss (1) and the other end being adapted to be connected to a pile foundation (3) extending above sea level.

2. The offshore photovoltaic panel support device according to claim 1, characterized in that, One of the connecting columns corresponds to one of the pile foundations (3).

3. The offshore photovoltaic panel support device according to claim 1, characterized in that, Each of the connecting columns is provided with a column base plate (2012) facing the pile foundation (3), and the column base plate (2012) is connected to the pile top plate (303) of the pile foundation (3) by fasteners (5).

4. The offshore photovoltaic panel support device according to claim 3, characterized in that, The connecting column is provided with a first through hole, and the pile top plate (303) is provided with a second through hole (304). The first through hole and the second through hole (304) are provided correspondingly. The inner diameter of the first through hole is larger than the outer diameter of the fastener (5), and the inner diameter of the first through hole is smaller than the inner diameter of the second through hole (304).

5. The offshore photovoltaic panel support device according to claim 4, characterized in that, It also includes a fixing plate assembly (4), on the side of the pile top plate (303) away from the column bottom plate (2012) a pile top rib plate (302) is provided, on the side of the pile top rib plate (302) away from the pile top plate (303) the fixing plate assembly (4) is provided, and the fixing plate assembly (4) is connected to the fastener (5).

6. The offshore photovoltaic panel support device according to claim 5, characterized in that, The fixing plate assembly (4) includes at least two fixing plates, which are fitted onto the outer periphery of the pile foundation (3), and each fixing plate is connected to the fastener (5).

7. The marine photovoltaic panel support device according to any one of claims 1-6, characterized in that, The placement truss (1) includes a frame truss section (101), which is connected to the connecting column.

8. The offshore photovoltaic panel support device according to claim 7, characterized in that, The placement truss (1) also includes several planar truss sections (103) and several purlins (102), wherein the planar truss sections (103) are arranged perpendicularly to the purlins (102).

9. The offshore photovoltaic panel support device according to claim 8, characterized in that, Each of the planar truss sections (103) includes a first upper chord (1031), a first lower chord (1033), and a first web member (1032). The first web member (1032) is connected to the first upper chord (1031) and the first lower chord (1033) respectively. The first upper chord (1031) is connected to the purlin (102).

10. A method for installing a marine photovoltaic panel support device, used to install the marine photovoltaic panel support device as described in claim 1, characterized in that, The placement truss (1) and connecting columns are prefabricated in the factory. During on-site installation, the connecting columns and pile foundations (3) are aligned and connected, and the photovoltaic panels are placed on the surface of the placement truss (1).

Images