Floating type photovoltaic structure based on steel pipe pile frame

Abstract

The utility model discloses a floating type photovoltaic structure based on a steel pipe pile frame. The floating type photovoltaic structure comprises a photovoltaic assembly and a floating frame. The floating frame is a frame body with the radial section in a regular N-polygon shape and comprises a bottom frame and a supporting frame. The bottom frame comprises N inclined struts which are arranged in a radial shape, one ends of the inclined struts are connected with the center node, the other ends of the inclined struts are connected with edge nodes, and the N transverse struts are sequentially connected through the edge nodes; the cross braces and the inclined braces adopt steel pipe piles of which central cavities are filled with light fillers; the supporting frame is composed of N + 1 vertical supports, each vertical support comprises an outer-layer steel pipe pile fixed to a center node and side nodes, an upper inner cavity and a lower inner cavity of each vertical support are separated through a sealing plate, an inner-layer steel pipe pile is inserted into the upper inner cavity, and the lower inner cavity is filled with light filler. The photovoltaic module is fixed on the floating frame through a photovoltaic bracket; the structure has high strength and good stability, natural loads such as wind, waves and flow are effectively borne, long-term stable operation of the power station is ensured, and the operation cost is lower than that of a floating pipe, a floating box and the like.

Description

Technical Field

[0001] This utility model relates to the field of marine photovoltaic construction technology, and in particular to a floating photovoltaic structure based on a steel pipe pile frame. Background Technology

[0002] Against the backdrop of energy transition, floating photovoltaic (PV) power plants, as an emerging clean energy technology, have broad development prospects. The floating system of a floating PV system, including supporting structures such as floating pipes and pontoons, accounts for a significant portion of the cost, generally exceeding that of conventional ground-mounted power plants. Therefore, it is necessary to improve the structure of floating PV power plants to reduce costs while ensuring structural strength and durability. This will reduce construction and subsequent maintenance costs, demonstrating a significant cost advantage in the effective utilization of water surface resources for PV power generation. Utility Model Content

[0003] The purpose of this invention is to provide a floating photovoltaic structure based on a steel pipe pile frame that solves the above-mentioned technical problems.

[0004] Therefore, the technical solution of this utility model is as follows:

[0005] A floating photovoltaic structure based on a steel pipe pile frame includes photovoltaic modules and a floating frame. The floating frame is a frame with a radial cross-section of a regular N-gon, including a base frame and support frames fixed above the base frame. The base frame consists of a central node, N side nodes, N horizontal braces, and N diagonal braces. The horizontal and diagonal braces are all steel pipe piles with a central cavity filled with a lightweight filler material appropriate to the cavity volume. The central node is a steel structure with a radial cross-section of a regular N-gon. The N diagonal braces are radially distributed along the circumference of the central node, with one end fixed to the side wall of the central node. The side nodes are steel structures, with the other ends of the N diagonal braces fixed to the N side nodes. The N horizontal braces are connected between each pair of adjacent side nodes, sequentially... The system connects to form a regular N-sided frame. The support frame consists of N+1 vertical supports, which are retractable steel pipe pile assemblies composed of outer and inner steel pipe piles. The outer steel pipe piles have sealing plates fixed to their upper inner walls, preventing communication between their upper and lower cavities. The lower cavity is filled with a lightweight filler material appropriate for its volume. The inner steel pipe piles are inserted into the upper cavity of the outer steel pipe piles and fixed at designated positions within the upper cavity using cement-cured filler material. The photovoltaic modules are fixed to the floating frame via steel photovoltaic brackets. The bottom ends of the outer steel pipe piles of the N+1 vertical supports are vertically fixed to the top surfaces of the center node and N side nodes, respectively. The top ends of the inner steel pipe piles of the N+1 vertical supports are directly or via connectors fixed to the bottom surface of the photovoltaic brackets. Here, N is a positive integer greater than or equal to 4.

[0006] Furthermore, the lightweight filler is a cylindrical air bladder filled with gas, which is air or a gas with a density less than air.

[0007] Furthermore, the lightweight filler is foam plastic.

[0008] Furthermore, at least one barrel-shaped float is fitted at intervals on each horizontal support, and at least one barrel-shaped float is fitted on the underside of each vertical support.

[0009] Furthermore, an insert groove is provided on the connection surface between the central node and the diagonal brace and the vertical brace, so that the ends of the diagonal brace and the vertical brace are inserted into the insert groove and welded to fix them; an insert groove is provided on the connection surface between the side node and the horizontal brace, diagonal brace and vertical brace, so that the ends of the horizontal brace, diagonal brace or vertical brace are inserted into the insert groove and welded to fix them.

[0010] Furthermore, the radial cross-section of the floating frame is a square, a regular hexagon, or a regular octagon.

[0011] Furthermore, the photovoltaic support structure adopts a steel mesh support structure or a steel truss support structure, the size and shape of which are adapted to the radial dimensions and shape of the floating frame.

[0012] Furthermore, the connector consists of a U-shaped clamp and a connecting cylinder; wherein, the U-shaped clamp is a U-shaped structure with the opening located on the side and adapted to the thickness of the outer edge of the photovoltaic bracket, so that the U-shaped clamp is clamped and fixed on the outer edge of the photovoltaic bracket; the top of the connecting cylinder is fixed on the bottom surface of the U-shaped clamp, and its top surface is a plane or an inclined plane, so that the connecting cylinder can be vertically sleeved and fixed on the outer side of the top of the vertical support.

[0013] Compared with existing technologies, this floating photovoltaic structure based on a steel pipe pile frame is designed with adjustable height and tilt angle, making it suitable for mass production and adaptable to different construction environments. Furthermore, this floating photovoltaic structure boasts high strength and excellent stability, effectively withstanding natural loads such as wind, waves, and currents, ensuring long-term stable operation of the power station. Compared with traditional floating pipe or floating box structures, it offers advantages such as lower cost, easier installation, and higher construction efficiency. Simultaneously, by designing the diagonal, horizontal, and vertical braces forming the steel pipe pile frame structure as cavities filled with lightweight materials, the buoyancy of the frame remains stable, preventing rapid buoyancy imbalance even during subsequent corrosion and damage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the floating photovoltaic structure based on a steel pipe pile frame according to an embodiment of the present invention;

[0015] Figure 2This is a partial structural schematic diagram of a floating photovoltaic structure based on a steel pipe pile frame according to an embodiment of the present utility model;

[0016] Figure 3 This is a partial connection diagram of the photovoltaic support being horizontally connected to the floating frame in a floating photovoltaic structure based on a steel pipe pile frame according to an embodiment of the present invention.

[0017] Figure 4 This is a partial connection diagram of the photovoltaic support being obliquely arranged and connected to the floating frame in a floating photovoltaic structure based on a steel pipe pile frame according to an embodiment of the present utility model.

[0018] Figure 5 This is a partial cross-sectional view of the cross bracing in the floating photovoltaic structure based on a steel pipe pile frame according to an embodiment of this utility model. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention.

[0020] See Figure 1 The floating photovoltaic structure based on a steel pipe pile frame includes a photovoltaic module 1 and a floating frame 3; the photovoltaic module 1 is fixed to the floating frame 3 by a photovoltaic bracket 2.

[0021] The floating frame 3 is a frame with a radial cross section of regular hexagon, which includes a base frame and a support frame fixed above the base frame; based on this, the base frame is composed of a central node 4, six side nodes 5, six horizontal braces 6 and six diagonal braces 7, and the support frame is composed of seven vertical braces 8.

[0022] Center node 4 is located at the center of the base frame. It is a hollow steel block with a hexagonal radial cross section. Its top surface and six side walls are used for fixed connection with the ends of the diagonal braces and vertical braces.

[0023] Side node 5 is a hollow steel block with an isosceles trapezoidal radial cross-section. Its top surface and three side walls are used to connect and fix the ends of a vertical brace 8, a diagonal brace 7, and two horizontal braces 6. The six side nodes 5 are evenly distributed around the center node 4 and are set with the small side wall containing the upper base of the trapezoidal cross-section facing the center node, so that the small side walls of the six side nodes 5 are respectively parallel to the six side walls of the center node 4. The side nodes 5 preferably adopt a structure with the same shape and size as the structure formed by splitting the center node 4 longitudinally, so that the ends of the diagonal brace 7 and the two horizontal braces 6 can be vertically fixed to the three side walls of the side node 5.

[0024] See Figure 2Six diagonal braces 7 are radially distributed along the circumference of the central node 4. One end of each brace 7 is centrally and vertically fixed to one of the six side walls of the central node 4, while the other end is centrally and vertically fixed to the smaller side walls of the six edge nodes 5. Six horizontal braces 6 are positioned between each pair of adjacent edge nodes 5, with both ends of each horizontal brace 6 vertically fixed to the inclined walls of its two adjacent edge nodes 5. Seven vertical braces 8 are arranged correspondingly on the central node 4 and the six edge nodes 5, with the bottom end of each vertical brace 8 centrally and vertically fixed to the top surface of the node below it.

[0025] Both the horizontal brace 6 and the diagonal brace 7 are steel pipe piles with a central cavity filled with a lightweight filler 11 adapted to the cavity volume; in this embodiment, see... Figure 5 The structure of the cross brace 6 is illustrated as an example. The cross brace 6 includes a steel pipe pile, which is filled with cylindrical foam plastic that is adapted to the volume of the cavity. Circular sealing plates are preferably welded and fixed to the openings at both ends of the steel pipe pile, so that the inner cavity of the steel pipe pile forms a closed chamber.

[0026] The vertical support 8 is a retractable steel pipe pile assembly composed of an outer steel pipe pile 801 and an inner steel pipe pile 802. Specifically, the outer steel pipe pile 801 is a steel pipe pile with a sealing plate horizontally fixed on its upper inner wall, dividing the inner cavity of the steel pipe pile into an upper cavity and a lower cavity, which are not connected. The lower cavity of the steel pipe pile is filled with a lightweight filler 11 adapted to the volume of the cavity. In this embodiment, the lightweight filler 11 is cylindrical foam plastic. The inner steel pipe pile 802 is inserted into the outer steel pipe pile 802. The upper cavity of the vertical support 8 is located within the upper cavity of the outer steel pipe pile 801 and can expand and contract relative to the upper cavity of the outer steel pipe pile 801 to adjust the overall length of the vertical support 8. In practical applications, the gap between the outer steel pipe pile 801 and the inner steel pipe pile 802 is filled with cement slurry to solidify and form cement-cured filler 12. That is, the inner steel pipe pile 802 is fixed at a designated position in the upper cavity of the outer steel pipe pile 801 by filling the gap between it and the outer steel pipe pile 801 with cement-cured filler 12, thereby achieving the length positioning of the vertical support 8.

[0027] In the photovoltaic structure of this application, the adjustable length of the vertical support 8 enables the factory-standardized customization of the floating photovoltaic structure. Based on the actual application requirements of the construction environment, the length of the vertical support 8 from one side of the floating frame 3 to the other side is adjustable and fixed, so that the top surface of the floating frame 3 is either flat or inclined. Consequently, the orientation of the photovoltaic modules installed on the top of the floating frame 3 can meet its illumination angle requirements.

[0028] like Figure 3 The diagram shows a partial connection between the photovoltaic support structure and the floating frame in a horizontal position. Figure 4This is a partial connection diagram of the photovoltaic support structure being set at an angle and connected to the floating frame.

[0029] In this application, the horizontal brace 6, the diagonal brace 7 and the vertical brace 8 all adopt a structural design with the inner cavity filled with lightweight filler material 11. Compared with the use of steel pipe piles alone, the use of foam plastic to fill the inner cavity of the steel pipe pile has the advantage of avoiding the problem of water entering the inner cavity of the steel pipe pile after the end side of the horizontal brace is damaged due to long-term immersion in water, which causes the buoyancy of the floating frame 3 to change, resulting in imbalance or even sinking.

[0030] In practical applications, the lengths of the horizontal brace 6, diagonal brace 7, and vertical brace 8 are set to be the same or different according to actual operational needs. The three can be pipe structures with the same diameter or pipe structures with different diameters. The size design of the center node 4 is adapted to the diameter of the diagonal brace 7 and the vertical brace 8 to meet the area requirements for welding and fixing the ends of the diagonal brace 7 and the vertical brace 8 to the wall of the center node 4. The size design of the side node 5 is adapted to the diameter of the horizontal brace 6, diagonal brace 7, and vertical brace 8 to meet the area requirements for welding and fixing the ends of the above three structures to the wall of the side node 5.

[0031] As a preferred technical solution of this embodiment, an insert groove is provided on the connection surface between the central node 4 and the diagonal brace 7 and the vertical brace 8, so that the end of the diagonal brace 7 or the vertical brace 8 is fitted into the insert groove and welded to fix it, thereby increasing the connection strength between the central node 4 and the diagonal brace 7, and between the central node 4 and the vertical brace 8; similarly, an insert groove is provided on the connection surface between the side node 5 and the horizontal brace 6, the diagonal brace 7, and the vertical brace 8, so that the end of the horizontal brace 6, the diagonal brace 7, or the vertical brace 8 is fitted into the insert groove and welded to fix it.

[0032] As another preferred technical solution in this embodiment, two barrel-shaped floats 9 are spaced apart on each horizontal support 6, and a barrel-shaped float 9 is fitted on the lower side of each vertical support 8, so as to further increase the buoyancy of the floating frame 3, so that the floating frame 3 can carry more photovoltaic panels and float on the sea surface.

[0033] The photovoltaic module 1 consists of multiple photovoltaic panels, which are laid out flat and fixed to the top of the floating frame 3 by the photovoltaic bracket 2. Specifically, the photovoltaic bracket 2 adopts a steel truss support structure with a hexagonal cross section and a size slightly larger than the radial dimension of the floating frame 3. The six apex corners of the photovoltaic bracket 2 are cut longitudinally to form a flat surface for easy clamping. The photovoltaic panels are arranged on the photovoltaic bracket 2 using conventional connectors and fixing methods.

[0034] See Figure 3 and Figure 4The photovoltaic bracket 2 is connected and fixed to each vertical support 8 by six steel connectors 10. Specifically, the connector 10 consists of a U-shaped clamp 1001 and a connecting cylinder 1002. The U-shaped clamp 1001 is a U-shaped structure with the opening located on the side and adapted to the thickness of the outer edge of the photovoltaic bracket 2. The top of the connecting cylinder 1002 is welded and fixed to the bottom surface of the U-shaped clamp 1001, and its top surface is a plane or a slope, so that the connecting cylinder 1002 can be vertically sleeved on the outer side of the top of the vertical support 8. In this embodiment, the six connectors 10 are evenly distributed and welded and fixed at the six top corners of the photovoltaic bracket 2 along the circumferential direction. The connecting cylinders 1002 of each connector 10 are respectively sleeved and welded and fixed to the top of the vertical support 8.

[0035] In practical applications, the specific construction method of this floating photovoltaic structure based on steel pipe piles and a steel pipe pile frame is described as follows:

[0036] S1. In the prefabrication plant, the tubes of the horizontal brace 6, the diagonal brace 7 and the vertical brace 8 are prefabricated according to the actual photovoltaic module assembly requirements.

[0037] S2. Lightweight filler 11 is filled into the prefabricated pipe cavity. Taking columnar foam plastic as an example, the outer diameter of the columnar foam plastic is slightly smaller than the cavity diameter to facilitate filling the cavity of the steel pipe pile. After filling, it is preferable to seal the openings at both ends of the steel pipe pile with a circular sealing plate.

[0038] S3. Install barrel-shaped floats 9 at the corresponding positions of the horizontal support 6 and the vertical support 8, and connect and fix them.

[0039] S4. By connecting the six horizontal supports 6, the six diagonal supports 7, and the seven vertical supports 8 through the central nodes 4 and the side nodes 5, a floating frame 3 is formed.

[0040] S5. Adjust the height of each vertical support 8 according to the light angle requirements of the construction environment so that the photovoltaic bracket 2 is set horizontally or tilted on the floating frame 3.

[0041] S6. The photovoltaic support 2 is connected and fixed to the top of the floating frame 3 through each connector 10, and then the photovoltaic module 1 is laid and fixed on the photovoltaic support 2.

[0042] S7. Transport the floating photovoltaic structure based on the steel pipe pile frame to the offshore operation site. After launching, connect anchor chains at each of the five side nodes to connect the structure to the seabed and achieve floating fixation.

Claims

1. A floating photovoltaic structure based on a steel pipe pile frame, characterized in that, It includes photovoltaic modules (1) and a floating frame (3); wherein, the floating frame (3) is a frame with a radial cross section of a regular N-gon, including a base frame and a support frame fixed above the base frame; the base frame consists of a central node (4), N side nodes (5), N horizontal braces (6) and N diagonal braces (7), and the horizontal braces (6) and diagonal braces (7) are all steel pipe piles with a central cavity and the cavity is filled with a lightweight filler (11) that is compatible with the volume of the cavity; the central node (4) is a photovoltaic module ... central node (4) is a photovoltaic module (1) and a floating frame (3); wherein, the floating frame (3) is a frame with a radial cross section of a regular N-gon, including a base frame and a support frame fixed above the base frame; the central node (4) is a photovoltaic module (1) and a floating frame (3); wherein, the floating frame (3) is a frame with a radial cross section of a regular N-gon, including a base frame and a support frame fixed above the base frame; the central node (4) is a photovoltaic module (1) and a floating frame (3); wherein, the floating frame (3) is a frame with a radial cross section of a regular N-gon, including a base frame and a support frame fixed above the base frame; the central node ( Node (4) is a steel structure with a radial cross-section of a regular N-gon. N diagonal braces (7) are evenly distributed radially along the circumference of the central node (4), and one end is fixed to the side wall of the central node (4). The side nodes (5) are steel structures, and the other end of the N diagonal braces (7) is fixed to the N side nodes (5). N horizontal braces (6) are connected between each pair of adjacent side nodes (5) to form a regular N-gon frame. The support frame consists of N+1 supports. The vertical support (8) is a telescopic steel pipe pile assembly consisting of an outer steel pipe pile (801) and an inner steel pipe pile (802). The outer steel pipe pile (801) is a steel pipe pile with a sealing plate fixed on its upper inner wall, so that its upper cavity is not connected to its lower cavity. The lower cavity is filled with a lightweight filler (11) that is compatible with the cavity volume. The inner steel pipe pile (802) is inserted into the upper cavity of the outer steel pipe pile (801) and connected by cement. The solidified filler (12) is fixed at a designated position in the upper cavity; the photovoltaic module (1) is fixed on the floating frame (3) by the steel photovoltaic bracket (2); the bottom ends of the outer steel pipe piles (801) of the N+1 vertical supports (8) are respectively vertically fixed on the top surface of the center node (4) and the N side nodes (5), and the top ends of the inner steel pipe piles (802) of the N+1 vertical supports (8) are directly or through the plug-in (10) fixed on the bottom surface of the photovoltaic bracket (2).

2. The floating photovoltaic structure based on a steel pipe pile frame according to claim 1, characterized in that, The lightweight filler (11) is a cylindrical air bladder filled with gas, which is air or a gas with a density less than that of air.

3. The floating photovoltaic structure based on a steel pipe pile frame according to claim 1, characterized in that, The lightweight filler (11) is foam plastic.

4. The floating photovoltaic structure according to claim 1, characterized in that, At least one barrel-shaped float (9) is fitted at intervals on each horizontal support (6), and at least one barrel-shaped float (9) is fitted on the underside of each vertical support (8).

5. The floating photovoltaic structure based on a steel pipe pile frame according to claim 1, characterized in that, An insert groove is provided on the connection surface between the central node (4) and the diagonal brace (7) and the vertical brace (8), so that the ends of the diagonal brace (7) and the vertical brace (8) are inserted into the insert groove and welded to fix them; an insert groove is provided on the connection surface between the side node (5) and the horizontal brace (6), the diagonal brace (7) and the vertical brace (8), so that the ends of the horizontal brace (6), the diagonal brace (7) or the vertical brace (8) are inserted into the insert groove and welded to fix them.

6. The floating photovoltaic structure based on a steel pipe pile frame according to claim 1, characterized in that, The radial cross section of the floating frame (3) is a square, a regular hexagon, or a regular octagon.

7. The floating photovoltaic structure based on a steel pipe pile frame according to claim 1, characterized in that, The photovoltaic support (2) adopts a steel mesh support structure or a steel truss support structure, the size and shape of which are adapted to the radial size and shape of the floating frame (3).

8. The floating photovoltaic structure based on a steel pipe pile frame according to claim 1, characterized in that, The connector (10) is composed of a U-shaped clamp (1001) and a connecting tube (1002); wherein, the U-shaped clamp (1001) is a U-shaped structure with the opening located on the side and adapted to the thickness of the outer edge of the photovoltaic bracket (2), so that the U-shaped clamp (1001) is clamped and fixed on the outer edge of the photovoltaic bracket (2); the top of the connecting tube (1002) is fixed on the bottom surface of the U-shaped clamp (1001), and its top surface is a plane or a slope, so that the connecting tube (1002) can be vertically sleeved and fixed on the outer side of the top of the vertical support (8).

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