Offshore photovoltaic platform structure provided with box transformer substation platform and cable trestle

Abstract

The utility model provides an offshore photovoltaic platform structure provided with a box transformer substation platform and a cable trestle. The offshore photovoltaic platform structure comprises a steel truss platform erected on the sea. The steel pipe piles are connected with the steel truss platform and used for supporting the steel truss platform, and the steel truss platform and the steel pipe piles are connected through inclined strut units; the photovoltaic module is laid in the steel truss platform; the box transformer substation platform is arranged on the north side of the steel truss platform; and a cable trestle is arranged on the steel truss platform. The box-type transformer substation platform installed on the steel truss platform is adopted, a traditional box-type transformer substation platform is often separated from a photovoltaic support, independent piling is needed, the box-type transformer substation platform is integrated on the steel truss platform, steel and offshore construction operation procedures are reduced, and the purposes of convenient construction and low cost are achieved.

Description

Technical Field

[0001] The utility model relates to the field of offshore photovoltaic power generation, in particular to an offshore photovoltaic platform structure provided with a box-type transformer platform and a cable trestle. Background Art

[0002] As a clean, unlimited, and renewable energy source, solar energy holds broad development prospects. Photovoltaic technology, which uses solar cells to directly convert solar energy into electricity, is one of the most mature and widely used methods of utilizing solar energy. Offshore photovoltaics are an emerging area of ​​solar energy utilization, offering advantages such as favorable sunlight conditions, low temperatures, a small land area footprint, and minimal impact on agriculture and the environment. Vigorously promoting the research and application of offshore photovoltaic power generation can effectively alleviate land resource constraints and increase the supply of new energy.

[0003] Due to the unique offshore environment, offshore photovoltaic structures not only withstand loads from wind, snow, waves, and sea ice, but are also subject to corrosion and damage from the ocean's high humidity and salinity. Furthermore, offshore construction is long, difficult, and costly, and manual maintenance is difficult. To achieve offshore photovoltaic power generation more conveniently, safely, and economically, a reliable, easy-to-construct, low-cost, and durable offshore photovoltaic platform structure is needed. Utility Model Content

[0004] In order to solve the above problems, the present invention proposes an offshore photovoltaic platform structure provided with a box-type transformer platform and a cable trestle, so as to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides an offshore photovoltaic platform structure provided with a box-type transformer platform and a cable trestle, comprising: a steel truss platform erected on the sea;

[0006] A plurality of steel pipe piles connected to the steel truss platform and used to support the steel truss platform, wherein the steel truss platform and the steel pipe piles are connected via a diagonal bracing unit;

[0007] Photovoltaic modules laid on the steel truss platform;

[0008] and a box-type transformer platform arranged on the north side of the steel truss platform;

[0009] A cable trestle is provided on the steel truss platform;

[0010] The cable trestle comprises a crossbeam, a longitudinal beam, a steel grille, a cable trough box, and a rotating shaft structure;

[0011] The two longitudinal beams are arranged opposite to each other, the plurality of cross beams are arranged between the two longitudinal beams and the two ends of the cross beams are fixedly connected to the two longitudinal beams respectively, and the plurality of cross beams extend along the length direction of the longitudinal beams to form a ladder-like structure;

[0012] The plurality of steel grids are respectively laid on the plurality of beams;

[0013] Two groups of cable trough boxes are respectively arranged on both sides of the steel grille and fixedly connected to the crossbeam;

[0014] A plurality of the rotating shaft structures are arranged on the longitudinal beam, so that the transverse beam can be folded.

[0015] Furthermore, the diagonal bracing unit is composed of a welding ball and a diagonal bracing rod, the welding ball is welded to the top of the steel pipe pile, the top of the welding ball is welded to the diagonal bracing rod, and the diagonal bracing rod is fixedly connected to the steel truss platform;

[0016] A plurality of oblique support rods are welded on the welding ball, and the plurality of oblique support rods are radially arranged on the welding ball.

[0017] Furthermore, the steel truss platform is composed of an upper chord, a lower chord, a web, and a purlin. The upper chord and the lower chord are arranged opposite to each other, and there are multiple webs. Multiple webs are arranged between the upper chord and the lower chord and fixedly connect the upper chord and the lower chord; multiple purlins are arranged on the upper chord, and the multiple upper chords extend in the north-south and east-west directions respectively, and are staggered with each other to form the upper plane of the steel truss platform. The purlins are distributed in the east-west direction, and the photovoltaic modules are fixed to the purlins by screws.

[0018] Furthermore, the box-type transformer platform is composed of horizontal rods, vertical rods, and connecting diagonal rods, which are used to bear the box-type transformer load and transfer the load to the steel truss platform. Multiple horizontal rods are horizontally arranged on the upper chord rod, and multiple vertical rods are vertically arranged at one end of the horizontal rod, and the bottom of the vertical rod is connected to the upper chord rod.

[0019] Furthermore, it also includes a trestle pile, which is located on one side of the steel truss platform and provides a splicing platform for the cable trestle. The cable trestle is welded to the lower chord and spliced ​​on the trestle pile.

[0020] Furthermore, the trestle piles are composed of steel column piles and welded plates; the welded plates are welded to the tops of the steel column piles, and the cable trestle is arranged on the tops of the welded plates.

[0021] Furthermore, the cable trestle further comprises guardrail posts and connecting rods;

[0022] A plurality of guardrail posts are distributed along the length direction of the longitudinal beam and are welded to the longitudinal beam at equal intervals;

[0023] The plurality of connecting rods are respectively arranged between two adjacent guardrail posts and are fixedly connected to the guardrail posts.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] The box-type transformer platform is installed on the steel truss platform. Traditional box-type transformer platforms are often separated from the photovoltaic bracket and need to be piled separately. The box-type transformer platform is integrated into the steel truss platform, which reduces the steel and offshore construction process, achieving the purpose of convenient construction and low cost.

[0026] A foldable cable trestle is welded on a steel truss platform, which can provide both cable layout and manual maintenance channels, thereby improving the safety and rationality of cable lines, reducing the difficulty of maintenance, and facilitating later inspection and maintenance work. The cable trestle is provided with a rotating shaft structure, which can be folded during the hoisting process to reduce the hoisting volume. After hoisting, it can be rotated and unfolded to the trestle pile for lap connection, thus achieving the purpose of convenient construction and low cost. The space above the trestle deck of the cable trestle is sufficient to meet the inspection work of one operator and improve the efficiency of the inspection.

[0027] 3. A steel truss platform is used as the load-bearing structure of the photovoltaic modules. The photovoltaic modules are connected to the purlins through bolts. The purlins are laid flat on the upper chord. The upper chord is welded to the lower chord through the web to form a truss structure. This connection structure is reliable and has good rigidity. It can effectively bear the load of the photovoltaic modules, achieving the purpose of structural reliability and good durability.

[0028] Fourth, a diagonal bracing system is used as the connecting component between the pile foundation and the steel truss platform. The angle of the steel platform is controlled by the length of the diagonal bracing, so that the photovoltaic modules are laid at a certain angle to the south. A certain shielding distance is reserved between each photovoltaic module, thereby maximizing the use of sunlight resources and increasing the power generation of the photovoltaic modules. In addition, welding balls are used to weld the diagonal bracing and steel pipe piles to avoid stress concentration and loose welding problems, thereby achieving good durability and structural reliability.

[0029] Fifth, steel pipe piles are used as the pile foundation of the structural system. Traditional photovoltaic systems often use PHC pipe piles. Although the unit price is low, the pile spacing is small and the ability to resist ice and waves is poor. Steel pipe piles can withstand greater horizontal and vertical loads, thereby achieving structural reliability and good durability.

[0030] 6. Using an integrated construction method, photovoltaic modules, steel truss platforms, box-type transformer platforms, cable trestle and diagonal bracing systems can be welded, bolted and anti-corrosion processed in an onshore processing plant. The cable trestle can be folded and tied to the steel truss platform, and then transported to the site as a whole for welding with steel pipe piles. The cable trestle is untied, unfolded and welded to the trestle piles, reducing the time and process of on-site offshore construction operations, reducing construction difficulty and economic costs, and achieving the goal of low cost and convenient construction.

[0031] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A three-dimensional diagram of the offshore photovoltaic platform structure with a box-type transformer platform and a cable trestle provided for the utility model;

[0033] Figure 2 This is a structural elevation diagram of an offshore photovoltaic platform equipped with a box-type transformer platform and a cable trestle according to the present invention;

[0034] Figure 3 This is a structural plan of an offshore photovoltaic platform equipped with a box-type transformer platform and a cable trestle according to the utility model;

[0035] Figure 4 This is a side view of the offshore photovoltaic platform structure equipped with a box-type transformer platform and a cable trestle according to the utility model.

[0036] In the picture:

[0037] 1. Steel pipe piles;

[0038] 2. Diagonal bracing unit; 21. Welding ball; 22. Diagonal bracing rod;

[0039] 3. Steel truss platform; 31. Upper chord; 32. Lower chord; 33. Web member; 34. Purlin;

[0040] 4. Box-type transformer platform; 41. Horizontal rod; 42. Vertical rod; 43. Connecting diagonal rod;

[0041] 5. Photovoltaic modules;

[0042] 6. Cable trestle; 61. Crossbeam; 62. Longitudinal beam; 63. Guardrail post; 64. Connecting rod; 65. Cable trough box; 66. Steel grille; 67. Rotating shaft structure;

[0043] 7. Trestle piles; 71. Steel column piles; 72. Welded plates. DETAILED DESCRIPTION

[0044] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the following.

[0045] Reference Figure 1-4As shown, an offshore photovoltaic platform structure with a box-type transformer platform and a cable trestle includes: a steel truss platform 3 erected on the sea; a plurality of steel pipe piles 1 connected to the steel truss platform 3 and used to support the steel truss platform 3, and the steel truss platform 3 and the steel pipe piles 1 are connected by a diagonal bracing unit 2; photovoltaic modules 5 laid in the steel truss platform 3; and a box-type transformer platform 4 set on the north side of the steel truss platform 3; a cable trestle 6 is set on the steel truss platform 3; the steel truss platform 3 is composed of an upper chord 31 and a lower chord 32. , web members 33, and purlins 34. The upper chord 31 and the lower chord 32 are arranged opposite to each other. There are multiple web members 33, and the multiple web members 33 are arranged between the upper chord 31 and the lower chord 32 and fixedly connect the upper chord 31 and the lower chord 32; multiple purlins 34 are arranged on the upper chord 31, and the multiple upper chords 31 extend in the north-south and east-west directions respectively, and are staggered to form the upper plane of the steel truss platform. The purlins 34 are distributed in the east-west direction, and the photovoltaic modules 5 are fixed to the purlins 34 by screws;

[0046] The diagonal bracing unit 2 is composed of a welded ball 21 and a diagonal bracing rod 22. The welded ball 21 is welded to the top of the steel pipe pile 1. The top of the welded ball 21 is welded to the diagonal bracing rod 22. The diagonal bracing rod 22 is fixedly connected to the steel truss platform 3. A plurality of diagonal bracing rods 22 are welded to the welded ball 21. The plurality of diagonal bracing rods 22 are radially arranged on the welded ball 21.

[0047] The box-type transformer platform 4 is composed of horizontal rods 41, vertical rods 42, and connecting diagonal rods 43. It is used to bear the box-type transformer load and transfer the load to the steel truss platform 3. Multiple horizontal rods 41 are horizontally arranged on the upper chord rod 31, and multiple vertical rods 42 are vertically arranged at one end of the horizontal rod 41. The bottom of the vertical rod 42 is connected to the upper chord rod 31.

[0048] The cable trestle 6 includes a crossbeam 61, a longitudinal beam 62, a steel grille 66, a guardrail column 63, a connecting rod 64, a cable trough box 65, and a rotating shaft structure 67;

[0049] The two longitudinal beams 62 are arranged opposite to each other, and multiple cross beams 61 are arranged between the two longitudinal beams 62 and their two ends are fixedly connected to the two longitudinal beams 62 respectively. The multiple cross beams 61 extend along the length direction of the longitudinal beams 62 to form a ladder-like structure; multiple steel grilles 66 are respectively laid on the multiple cross beams 61; multiple guardrail posts 63 are distributed along the length direction of the longitudinal beams 62 and are welded on the longitudinal beams 62 at equal intervals; multiple connecting rods 64 are respectively arranged between two adjacent guardrail posts 63 and fixedly connected to the guardrail posts 63; the cable trestle 6 also includes a cable trough box 65 and a rotating shaft structure 67; two groups of cable trough boxes 65 are respectively arranged on both sides of the steel grille 66 and fixedly connected to the cross beam 61; multiple rotating shaft structures 67 are all arranged on the longitudinal beam 62, so that the cross beam 61 can be folded.

[0050] The present invention provides a technical solution in which horizontal rods 41 are arranged in three rows and three columns, forming a "M" shape with horizontal supports 43, and the plane of the box-type transformer platform 4 is parallel to the horizontal plane; the first and second rows of horizontal rods 41 are respectively located directly above the fifth and sixth rows of upper chord rods 31, and the third row of horizontal rods 41 is welded to the upper chord rods 31 through connecting diagonal rods 45; vertical supports 44 are provided in the planes of the vertical rods 42 to improve the overall rigidity and bearing capacity of the box-type transformer platform 4. At the same time, because the box-type transformer platform 4 is integrally welded to the steel truss, there is no need to separately set up the box-type transformer platform 4 and pile driving. Under the premise of a safe and reliable structural system, the steel consumption of the system can be reduced, and the construction cost, construction period and construction difficulty can be reduced, thereby achieving the goal of more economical total cost;

[0051] The crossbeams 61 and longitudinal beams 62 are both I-beams, with the crossbeams 61 bolted to the longitudinal beams 62 at specified intervals to form a ladder-like structure. A steel grille 66 approximately 1 meter wide is laid in the middle of the cable trestle 6 to provide a passage for manual maintenance. Cable troughs 65 are provided on both sides of the steel grille 66, and the cable troughs 65 are bolted to the crossbeams 61. A rotating shaft structure 67 is welded at the turning point to realize the folding and unfolding function of the cable trestle 6. The longitudinal beams 62 of the cable trestle 6 are welded to the lower chord 32 of the steel truss platform 3 to form an integral whole. Considering the load of the box-type transformer platform 4, the fifth steel pipe pile 1 is arranged below the sixth row of lower chords 32, mainly to bear the load from the box-type transformer platform 4.

[0052] The welded ball 21 is a steel ball of a certain thickness, providing sufficient bearing capacity for the upper load. The bottom of the welded ball 21 can be configured as a flat surface or a shape that matches the top of the steel pipe pile 1. It is welded to the top of the steel pipe pile 1, and the top of the welded ball 21 is welded to the diagonal brace 22. This prevents the steel pipe pile 1 from being easily damaged due to excessive shear force at the connection in special marine environments, and provides a more secure connection.

[0053] Each steel pipe pile 1 has three diagonal braces 22 arranged in an inverted cone shape. The tops of the braces 22 are connected to nodes around the lower chord 32 along the axis of the steel pipe pile 1. Given sufficient structural load-bearing capacity, the braces 22 can effectively transfer the loads from the upper box-type transformer platform 4, photovoltaic panels 5, and steel truss platform 3 to the steel pipe piles 1.

[0054] It also includes a trestle pile 7, which is located on one side of the steel truss platform 3 and provides a splicing platform for the cable trestle 6. The cable trestle 6 is welded to the lower chord 31 and spliced ​​on the trestle pile 7; the trestle pile 7 consists of a steel column pile 71 and a welded plate 72; the welded plate 72 is welded to the top of the steel column pile 71, and the cable trestle 6 is arranged on the top of the welded plate 72.

[0055] The construction method of the offshore photovoltaic platform structure based on the above-mentioned arrangement of the box-type transformer platform and the cable trestle includes the following steps:

[0056] S1: Pile foundation construction of steel pipe piles 1: After the steel pipe piles 1 and trestle piles 7 are manufactured in an onshore factory, they are transported to the sea, and the steel pipe piles 1 are pre-sunk using a piling ship;

[0057] S2: Construction of diagonal bracing system 2, steel truss platform 3 and box-type transformer platform 4: The diagonal bracing system 2, steel truss platform 3 and box-type transformer platform 4 are manufactured on land and welded;

[0058] S3: Construction of the cable trestle 6: The cable trestle 6 is prefabricated on land, the turning position is calculated, the pivot structure 67 is welded, and finally welded to the lower chord 32 of the steel truss platform 3; the extended portion is folded and tied to the lower chord 32;

[0059] S4: Installation and commissioning of photovoltaic modules 5: The photovoltaic modules 5 are mounted on the purlins 34 with bolts, and the cables of the photovoltaic modules 5 are connected and commissioned on land to ensure smooth connections between the photovoltaic panels. The cables are placed in the cable trough box 65 in advance.

[0060] S5: Overall transportation, hoisting and welding: The diagonal bracing system 2, photovoltaic modules 5, steel truss platform 3, box-type transformer platform 4 and the tied cable trestle 6 are transported to the site as a whole, hoisted onto the steel pipe piles 1 by a hoisting vessel, and the diagonal bracing system 2 and the welding balls 21 are welded;

[0061] S6: Repeat step S5 to complete the installation of multiple photovoltaic platforms, then release the binding of the adjacent cable trestles 6 in the north-south direction, unfold the cable trestles 6 and rotate them to the welding plates 72 of the trestles piles 7 for welding connection to complete the overall installation of the offshore photovoltaic platform structure.

[0062] The above disclosure is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. An offshore photovoltaic platform structure with a box-type transformer platform and a cable trestle, characterized in that: include: Steel truss platform erected at sea (3); a plurality of steel pipe piles (1) connected to the steel truss platform (3) and used to support the steel truss platform (3), wherein the steel truss platform (3) and the steel pipe piles (1) are connected via a diagonal bracing unit (2); Photovoltaic modules (5) laid on the steel truss platform (3); and a box-type transformer platform (4) arranged on the north side of the steel truss platform (3); A cable trestle (6) is provided on the steel truss platform (3); The cable trestle (6) includes a crossbeam (61), a longitudinal beam (62), a steel grille (66), a cable trough box (65), and a rotating shaft structure (67); The two longitudinal beams (62) are arranged opposite to each other, the plurality of cross beams (61) are arranged between the two longitudinal beams (62) and the two ends of the cross beams are respectively fixedly connected to the two longitudinal beams (62), and the plurality of cross beams (61) extend along the length direction of the longitudinal beams (62) to form a ladder-like structure; The plurality of steel grids (66) are respectively laid on the plurality of crossbeams (61); Two groups of cable trough boxes (65) are respectively arranged on both sides of the steel grid (66) and fixedly connected to the crossbeam (61); The plurality of rotating shaft structures (67) are all arranged on the longitudinal beam (62), so that the transverse beam (61) can be folded.

2. The offshore photovoltaic platform structure provided with a box-type transformer platform and a cable trestle according to claim 1, characterized in that: The diagonal bracing unit (2) is composed of a welding ball (21) and a diagonal bracing rod (22), the welding ball (21) is welded to the top of the steel pipe pile (1), the top of the welding ball (21) is welded to the diagonal bracing rod (22), and the diagonal bracing rod (22) is fixedly connected to the steel truss platform (3); A plurality of diagonal support rods (22) are welded to the welding ball (21), and the plurality of diagonal support rods (22) are radially arranged on the welding ball (21).

3. The offshore photovoltaic platform structure provided with a box-type transformer platform and a cable trestle according to claim 1, characterized in that: The steel truss platform (3) is composed of an upper chord (31), a lower chord (32), a web (33), and a purlin (34). The upper chord (31) and the lower chord (32) are arranged relative to each other. A plurality of webs (33) are provided, and the plurality of webs (33) are arranged between the upper chord (31) and the lower chord (32) and fixedly connect the upper chord (31) and the lower chord (32). A plurality of purlins (34) are provided on the upper chord (31). The plurality of upper chords (31) extend in the north-south and east-west directions respectively and are interlaced with each other to form an upper plane of the steel truss platform. The purlins (34) are distributed in the east-west direction. The photovoltaic module (5) is fixed to the purlins (34) by screws.

4. The offshore photovoltaic platform structure provided with a box-type transformer platform and a cable trestle according to claim 3, characterized in that: The box-type transformer platform (4) is composed of horizontal rods (41), vertical rods (42), and connecting diagonal rods (43), and is used to bear the box-type transformer load and transfer the load to the steel truss platform (3). A plurality of the horizontal rods (41) are horizontally arranged on the upper chord rod (31), and a plurality of the vertical rods (42) are vertically arranged at one end of the horizontal rod (41), and the bottom of the vertical rod (42) is connected to the upper chord rod (31).

5. The offshore photovoltaic platform structure provided with a box-type transformer platform and a cable trestle according to claim 3, characterized in that: It also includes a trestle pile (7) located on one side of the steel truss platform (3) to provide a lap platform for the cable trestle (6). The cable trestle (6) is welded to the lower chord (32) and lapped on the trestle pile (7).

6. The offshore photovoltaic platform structure provided with a box-type transformer platform and a cable trestle according to claim 5, characterized in that: The trestle pile (7) is composed of a steel column pile (71) and a welding plate (72); the welding plate (72) is welded to the top of the steel column pile (71), and the cable trestle (6) is arranged on the top of the welding plate (72).

7. The offshore photovoltaic platform structure provided with a box-type transformer platform and a cable trestle according to claim 1, characterized in that: The cable trestle (6) further includes a guardrail column (63) and a connecting rod (64); A plurality of guardrail posts (63) are distributed along the length direction of the longitudinal beam (62) and are welded to the longitudinal beam (62) at equal intervals; The plurality of connecting rods (64) are respectively arranged between two adjacent guardrail posts (63) and are fixedly connected to the guardrail posts (63).

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