Offshore photovoltaic supporting structure and offshore photovoltaic system

Abstract

The utility model provides an offshore photovoltaic supporting structure and an offshore photovoltaic system, and relates to the technical field of offshore photovoltaic. The supporting structure comprises a net rack assembly and a pile foundation assembly. Wherein the net rack assembly is provided with a first face and a second face which are oppositely arranged, and the first face is located between the second face and the sea level; one end of the pile foundation assembly is connected with the first face, the plane where the axis of the pile foundation assembly is located intersects with the first face, and the other end of the pile foundation assembly extends and is fixed to the position below the sea level; the pile foundation assembly comprises at least two pile foundations, the pile foundations are independently arranged, the axes of the pile foundations are arranged in the direction perpendicular to the sea level, and the distance between every two adjacent pile foundations ranges from 30 m to 50 m. According to the pile foundation assembly, the multiple pile foundations in the pile foundation assembly are arranged, and balance between the supporting stability of the pile foundation assembly and the number of the pile foundations is considered.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of offshore photovoltaic, in particular to an offshore photovoltaic support structure and an offshore photovoltaic system. BACKGROUND

[0002] Photovoltaic is a power generation system that converts solar radiation energy into electrical energy by using the photovoltaic effect of semiconductor materials. Photovoltaic is a clean, safe and renewable energy source, so photovoltaic power generation has good application prospects. Most commonly used photovoltaic power generation systems are set on land, but due to limited land space and the influence of buildings or plants, the layout space of photovoltaic is relatively limited. Therefore, considering the efficiency of receiving solar energy and the layout space of photovoltaic, the sea surface becomes a better choice for photovoltaic setting.

[0003] At present, offshore photovoltaic usually needs to set a support structure on the sea surface to realize the support and fixation of photovoltaic components. Since the ocean has special geographical environment such as ocean current, sea wind and high corrosion, the existing support structure applied on land cannot meet the support requirements of offshore photovoltaic components. In the prior art, a pile-to-pile connecting piece is added to multiple pipe piles in the traditional support structure to improve the support strength of the support structure. However, the support structure has a relatively complex structure, high manufacturing cost, and the phenomenon of multiple pipe piles linkage damage exists.

[0004] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE INVENTION

[0005] Therefore, an offshore photovoltaic support structure and an offshore photovoltaic system are provided. The support structure provides support force for the net rack assembly by setting a pile foundation assembly. The pile foundation assembly takes into account the balance between support stability and the number of pile foundations, and can provide effective support for the net rack assembly by using a relatively simple structure.

[0006] Other characteristics and advantages of the present disclosure will become apparent from the following detailed description, or will be learned by practice of the present disclosure.

[0007] According to one aspect of the present disclosure, an offshore photovoltaic support structure is provided, which comprises:

[0008] a net rack assembly, the net rack assembly having a first face and a second face arranged oppositely, the first face being located between the second face and the sea level;

[0009] a pile foundation assembly, one end of the pile foundation assembly is connected with the first face, and a plane in which an axis of the pile foundation assembly is located intersects the first face, and the other end of the pile foundation assembly extends and is fixed below the sea level;

[0010] The pile foundation assembly comprises at least two pile foundations, each of the pile foundations is independently arranged, an axis of each of the pile foundations is arranged in a direction perpendicular to the sea level, and a distance between two adjacent pile foundations is 30 m to 50 m.

[0011] In an example embodiment of the present disclosure, the first face and the second face of the truss assembly are coincident in orthographic projection on the sea level, and the first face is enclosed by two short sides and two long sides.

[0012] The pile foundation assembly comprises at least two rows of pile foundations, each of the rows of pile foundations comprises at least two pile foundations, each row of the pile foundations is arranged in sequence along a direction of one of the short sides, and a projection of each row of the pile foundations on a first plane at least partially overlaps, and the first plane is a plane perpendicular to the sea level.

[0013] In an example embodiment of the present disclosure, in a direction parallel to the short side, heights of the rows of pile foundations gradually increase or gradually decrease.

[0014] In an example embodiment of the present disclosure, heights of the pile foundations in each of the rows of pile foundations are the same, and in each of the rows of pile foundations, a distance between two adjacent pile foundations is equal.

[0015] In an example embodiment of the present disclosure, the number of the pile foundations is four, and the four pile foundations are arranged at positions close to four corners of the truss assembly respectively, and distances of the four pile foundations from a barycenter of the truss are equal.

[0016] In an example embodiment of the present disclosure, a distance between the two adjacent pile foundations is 40 m.

[0017] In an example embodiment of the present disclosure, an angle between the first face of the truss assembly and the sea level is 10° to 20°.

[0018] In an example embodiment of the present disclosure, the pile foundation is a hollow structure.

[0019] In an example embodiment of the present disclosure, the pile foundation is a steel pile, a concrete pile or a reinforced concrete pile.

[0020] According to another aspect of the present disclosure, there is provided an offshore photovoltaic system, comprising the offshore photovoltaic support structure described above; a second face of the truss assembly is used for fixedly connecting a photovoltaic assembly, and the photovoltaic assembly comprises a plurality of photovoltaic panels arranged in an array.

[0021] The offshore photovoltaic support structure provided by the present disclosure is supported and fixed by a pile foundation assembly on a net rack assembly, the pile foundation assembly comprises at least two independent piles, and the axis of each pile is arranged in a direction perpendicular to the sea level, and the distance between two adjacent piles is 30-50 m. By setting the specific structure of the pile foundation assembly, the pile foundation assembly can provide sufficient support for the net rack assembly, while ensuring the structural simplicity of the pile foundation assembly, and taking into account the functionality and economy of the pile foundation assembly. In addition, each pile in the pile foundation assembly is independent, avoiding the phenomenon of multiple pile linkage damage.

[0022] Another aspect of the present disclosure provides an offshore photovoltaic system, which uses the above support structure to effectively support a photovoltaic assembly, and has a simple structure and is suitable for the special environment of the sea.

[0023] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are incorporated into and form part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure. It is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0025] Figure 1 FIG. 1 is a structural schematic diagram of an offshore photovoltaic support structure in an exemplary embodiment of the present disclosure.

[0026] Figure 2 FIG. 2 is a three-dimensional schematic diagram of an offshore photovoltaic support structure in an exemplary embodiment of the present disclosure.

[0027] Figure 3 FIG. 3 is another three-dimensional schematic diagram of an offshore photovoltaic support structure in an exemplary embodiment of the present disclosure.

[0028] Figure 4 FIG. 4 is another three-dimensional schematic diagram of an offshore photovoltaic support structure in an exemplary embodiment of the present disclosure.

[0029] Figure 5 FIG. 5 is a partial structural schematic diagram of a pile foundation structure in an exemplary embodiment of the present disclosure.

[0030] In the drawings, the reference signs are explained as follows:

[0031] 10, net rack assembly; 11, first face; 12, second face; 20, pile foundation assembly; 21, pile foundation; 30, photovoltaic panel; L1, first distance; a, preset included angle. DETAILED DESCRIPTION

[0032] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the specification. Moreover, the figures can not be to scale and some features can be exaggerated to show details of particular implementations. Measures of thicknesses and lengths and the like can not be drawn to scale for clarity.

[0033] Although relative terms such as "upper", "lower", etc. are used herein to describe one component's relationship to another component of the icon, these terms are used herein for convenience only and are not necessarily limited to the position of the components as shown in the examples described in the figures. It will be understood that if the icon is turned upside down, the component described as being "on" the other component would then be "under" the other component. When a structure is "on" another structure, it can mean that the structure is formed integrally with the other structure or that the structure is "directly" on the other structure or that the structure is "indirectly" on the other structure via another structure.

[0034] The terms "one", "a", "an", "the", and "at least one" are used to indicate that "one or more" of the indicated element / s, component / s, etc. is / are present; the term "includes" and its variants are used synonymously with "comprising"; the term "universe" is used synonymously with "all"; the term "first", "second", and "third", etc. are used only as labels, and are not meant to impose numerical requirements or a particular numeric sequence on their objects.

[0035] In the related art, a photovoltaic system can include a photovoltaic panel, a photovoltaic support, and a pile structure, wherein the photovoltaic panel can be arranged on the photovoltaic support, and the pile structure is a support structure for fixing the photovoltaic panel on the sea level. The arrangement of the photovoltaic panel needs to be set according to the angle of the sun, so that the arrangement position of the photovoltaic panel has a higher requirement. Since the influencing factors on land are smaller, the support strength and arrangement mode of the pile structure have lower requirements, and the replacement and maintenance of the photovoltaic support and the pile structure on land are also easier. For the special geographical environment on the sea, it has many adverse environmental factors such as waves, ocean currents, sea ice, sea wind, snow load, and high corrosion. The traditional land photovoltaic support and pile structure form have poor adaptability and economy to the marine environment.

[0036] At present, the photovoltaic tubular pile structure on the sea usually adopts the form of multiple tubular piles connected to support the photovoltaic support, but when one tubular pile deforms or is damaged, the other tubular piles will also deform or be damaged, which is not conducive to taking into account the supporting force and service life of the tubular pile structure, and in addition, the tubular pile structure needs to additionally set a connecting piece, so the manufacturing cost is also high.

[0037] Based on this, the embodiment of the present disclosure provides an offshore photovoltaic support structure, as shown in Figure 1 As shown in Figures 2 to 4 The offshore photovoltaic support structure comprises a net rack assembly 10 and a pile foundation assembly 20.

[0038] The net rack assembly 10 has a first face 11 and a second face 12 arranged oppositely, and the first face 11 is located between the second face 12 and the sea level; one end of the pile foundation assembly 20 is connected with the first face 11, and the plane where the axis of the pile foundation assembly 20 is located intersects with the first face 11, and the other end of the pile foundation assembly 20 extends and is fixed below the sea level; the pile foundation assembly 20 comprises at least two independent pile foundations 21, the axis of each pile foundation 21 is arranged in a direction perpendicular to the sea level, and the distance between the adjacent two pile foundations 21 is 30m-50m.

[0039] The offshore photovoltaic support structure provided by the present disclosure forms a supporting and fixing effect on the net rack assembly 10 through the pile foundation assembly 20, the pile foundation assembly 20 comprises at least two independent pile foundations 21, and the axis of each pile foundation 21 is arranged in a direction perpendicular to the sea level, and the distance between the adjacent two pile foundations 21 is 30m-50m, by setting the specific structure of the pile foundation assembly 20, the pile foundation assembly 20 can have sufficient supporting force on the net rack assembly 10, while ensuring the structural simplicity of the pile foundation assembly 20, and taking into account the functionality and economy of the pile foundation assembly 20; in addition, each pile foundation 21 in the pile foundation assembly 20 has independence, avoiding the phenomenon of linkage damage of multiple pile foundations 21.

[0040] The various parts of the offshore photovoltaic support structure provided by the embodiment of the present disclosure will be described in detail below in combination with the drawings:

[0041] In the embodiment provided by the present disclosure, the support structure comprises a net rack assembly 10, as shown in Figure 1As shown, the rack assembly 10 has a first face 11 and a second face 12 arranged oppositely, and the first face 11 is located between the second face 12 and the sea level. In the present disclosure, the rack assembly 10 can refer to a rack cluster including a plurality of racks for providing support for the array of photovoltaic panels 30; the rack assembly 10 can also refer to a rack for providing support for the array of photovoltaic panels 30, and the specific reference of the rack assembly 10 can be adjusted adaptively according to the actual structure. The following embodiments described herein are described by taking the rack assembly 10 as an example of including one rack, and it should be understood that when the rack assembly 10 refers to a rack cluster, the following embodiments described herein can be adaptively modified to obtain a scheme of the rack cluster, which still falls within the protection scope of the present application.

[0042] In the present disclosure, the rack assembly 10 can be combined by a plurality of single-bay trusses, and the plurality of single-bay trusses can be connected by a plurality of web members, diagonal members, etc. The rack assembly 10 can have an outer shape of a cuboid or a cuboid-like shape, and the face away from the sea level is a support face for providing support for the photovoltaic panels 30, i.e., the second face 12; and the face close to the sea level is a connecting face for connecting the pile foundation assembly 20, i.e., the first face 11.

[0043] In the present disclosure, the first face 11 and the second face 12 in the rack assembly 10 can be parallel or substantially parallel to each other, and the first face 11 is located between the sea level and the second face 12. Since the photovoltaic panels 30 need to be applied to the direction of the sun at sea to improve the solar energy absorption rate and utilization rate, the rack assembly 10 usually has a certain angle with the sea level, and the angle between the first face 11 (or the second face 12) of the rack assembly 10 provided in the present disclosure and the sea level can be a preset angle α, and the preset angle α can be 10°-20°, for example, the preset angle α can be 10°, 11°, 12°, 13°, 14°, 15°, 16°, 17°, 18°, 19° or 20°, etc. Further, in order to improve the solar energy absorption rate, while taking into account the support strength and stability of the rack assembly 10 to the photovoltaic panels 30, the angle between the first face 11 (or the second face 12) of the rack assembly 10 and the sea level can be 15°.

[0044] In the embodiments provided in the present disclosure, as shown in the Figure 1 The support structure includes a pile foundation assembly 20, one end of the pile foundation assembly 20 is connected with the first face 11, and the plane where the axis of the pile foundation assembly 20 is located intersects with the first face 11, and the other end of the pile foundation assembly 20 extends and is fixed below the sea level.

[0045] In the present disclosure, the pile foundation assembly 20 provides support force and fixing position for the net rack assembly 10, and the pile foundation assembly 20 and the net rack assembly 10 can be connected by hinging, screwing or welding, etc. The specific connection can be selected according to the design requirements of the structure. The other end of the pile foundation assembly 20 is sunk below the sea level, and through piling and other operations, the other end of the pile foundation assembly 20 is fixed below the sea level, and the verticality of the pile foundation assembly 20 is checked after vertical detection, so as to meet the position setting requirements of the pile foundation assembly 20.

[0046] As shown in Figures 2 to 4 In order to ensure the stability of the support of the pile foundation assembly 20 to the net rack assembly 10, the pile foundation assembly 20 includes at least two pile foundations 21. Each pile foundation 21 can be independently arranged, and the axis of each pile foundation 21 is arranged in a direction perpendicular to the sea level, so as to ensure the verticality of each pile foundation 21 and provide a stable structural basis for the subsequent arrangement of the net rack assembly 10.

[0047] In order to reduce the weight of each pile foundation 21 and facilitate the transportation and arrangement of each pile foundation 21 on the sea surface, as shown in Figure 5 Each pile foundation 21 in the pile foundation assembly 20 can adopt a hollow structure, which ensures the strength of each pile foundation 21 while reducing the weight of each pile foundation 21. Of course, at some positions that bear relatively large loads, pile foundations 21 with solid structures can be used to improve the support force of the pile foundations 21.

[0048] Each pile foundation 21 in the pile foundation assembly 20 can be a steel pile, a concrete pile or a reinforced concrete pile. When the pile foundation 21 is a concrete pile, the concrete pile can be a prestressed high-intensity concrete (PHC), which can be made by a pre-tensioning prestress and mixed with fine materials, high-efficiency water-reducing agents, etc. The concrete is formed by centrifugal dewatering and compaction, and is made by two times of steam curing under normal pressure and high pressure to form a slender hollow section prefabricated concrete member. Of course, each pile foundation 21 can also be a tubular structure made of stainless steel or other materials, or a tubular structure made of a mixture of reinforced concrete.

[0049] The pile diameter of each pile foundation 21 can be 800mm-1400mm. Different pile foundations 21 with different pile diameters can be selected according to the load bearing capacity of the pile foundation 21. The pile diameter refers to the outer diameter size of the tubular structure or the tubular structure. For example, when the load bearing capacity of the pile foundation 21 is large, the pile foundation 21 with a pile diameter in the range of 1000mm-14000mm can be selected; when the load bearing capacity of the pile foundation 21 is small, the pile foundation 21 with a pile diameter in the range of 800mm-10000mm can be selected. The division of the load bearing capacity of the pile foundation 21 can be determined according to the actual structure design requirements, and the division of the load bearing capacity is not unique and can be adapted according to the specific environment or use requirements. In addition, the division of the pile diameter is not unique and can be adjusted according to actual requirements.

[0050] The wall thickness of each pile foundation 21 can be 15mm-20mm. Similar to the determination method of the pile diameter of the pile foundation 21, when the load bearing capacity of the pile foundation 21 is large, the pile foundation 21 with a wall thickness in the range of 18mm-20mm can be selected; when the load bearing capacity of the pile foundation 21 is small, the pile foundation 21 with a wall thickness in the range of 15mm-18mm can be selected. The length of each pile foundation 21 can be 25m-35m. For the pile foundations 21 arranged in different sea areas or at different positions of the net rack assembly 10, the length can be adjusted within the above range to ensure that the net rack assembly 10 has a certain angle with the sea level, thereby ensuring that the photovoltaic panels 30 on the net rack assembly 10 can fully utilize the offshore solar energy resources.

[0051] The sizes of each pile foundation 21 in the pile foundation assembly 20 of the present disclosure are within the above range, which can not only ensure that each pile foundation 21 can bear the offshore load, but also save the manufacturing cost of each pile foundation 21, and balance the functionality and economy of the pile foundation assembly 20.

[0052] In order to ensure the balance of the load bearing capacity in each pile foundation 21, the distance between the adjacent two pile foundations 21 can be the first distance L1, which can be 30m-50m, for example, the first distance L1 can be 30m, 32m, 34m, 36m, 38m, 40m, 42m, 44m, 46m, 48m or 50m. The first distance L1 can be determined according to the number of pile foundations 21. For example, when the number of pile foundations 21 is large, in order to ensure the uniform distribution of the pile foundations 21, the distance between the adjacent two pile foundations 21 can be reduced; when the number of pile foundations 21 is small, in order to ensure the stable support of the pile foundations 21 to the net rack assembly 10, the distance between the adjacent two pile foundations 21 can be increased, thereby balancing the arrangement and support stability of the pile foundations 21 in the pile foundation assembly 20.

[0053] It should be noted that the spacing between the two pile foundations 21 can refer to the average of the distances between the two pile foundations 21, or the maximum value within the distances, or the minimum value within the distances. Since each pile foundation 21 is arranged vertically to the sea level, the maximum and minimum values of the distance between the two pile foundations 21 should be less than the preset threshold value to meet the arrangement requirement that the axis of each pile foundation 21 is perpendicular to the sea level.

[0054] In one embodiment provided by the present disclosure, the first face 11 and the second face 12 of the grid assembly 10 have the same normal projection on the sea level, and the first face 11 is enclosed by two short sides and two long sides, that is, the outer contour of the first face 11 and the second face 12 can be rectangular or rectangular-like. The pile foundation assembly 20 includes at least two rows of pile foundations 21, each row of pile foundations 21 includes at least two pile foundations 21, and each row of pile foundations 21 is arranged in the direction of a short side in sequence, and the projection of each row of pile foundations 21 on a first plane at least partially overlaps, and the first plane is a plane perpendicular to the sea level.

[0055] In order to ensure that the angle between the grid assembly 10 and the sea level is the preset angle a, as shown in the formula: Figure 1 The photovoltaic panel 30 on the grid assembly 10 can effectively utilize the solar energy on the sea, and the height of the multiple rows of pile foundations 21 increases or decreases in sequence in the direction parallel to the short side of the first face 11, which can make the grid assembly 10 be arranged obliquely relative to the sea level, and also make each row of pile foundations 21 support the grid assembly 10, so that the pile foundation assembly 20 is uniformly stressed, and the stability of the support of the pile foundation assembly 20 on the grid assembly 10 is ensured.

[0056] In order to further improve the uniformity of the stress of each pile foundation 21 in the pile foundation assembly 20, the heights of the pile foundations 21 in each row of pile foundations 21 are the same, and the spacing distance between the adjacent two pile foundations 21 in each row of pile foundations 21 is equal. In addition, since the heights and spacing distances of the pile foundations 21 in each row of pile foundations 21 are the same, the pile foundation assembly 20 can be laid in the sea with the row of pile foundations 21 as the minimum installation unit, which can improve the construction efficiency.

[0057] On the basis of the structure provided in the above embodiment, each pile foundation 21 in each row of pile foundations 21 can be independently arranged, that is, each pile foundation 21 independently bears the load, and when the pile foundation assembly 20 is subjected to external force, especially the sea wind, tide, seawater corrosion and the like in the sea environment, when some or some of the pile foundations 21 in the row of pile foundations 21 are deformed or damaged, due to the independence of the pile foundations 21, the row of pile foundations 21 or each row of pile foundations 21 will not affect the support function of each other; in addition, through the division and arrangement of the row of pile foundations 21, the pile foundation assembly 20 can be partially positioned and repaired, and the maintenance efficiency of the structure is improved.

[0058] In some embodiments, as shown in FIG. 1, the number of rows of pile foundations 21 of the pile foundation assembly 20 can be two, including a first row of pile foundations 21 and a second row of pile foundations 21, and the number of pile foundations 21 in the first row of pile foundations 21 and the second row of pile foundations 21 can each be four, i.e., the total number of pile foundations 21 in the pile foundation assembly 20 is eight. The length of the pile foundations 21 in the first row of pile foundations 21 can be 25.2 m, the pile diameter can be 1200 mm, the wall thickness can be 18 mm, and the depth of the pile foundations 21 into the mud can be 10 m; the length of the pile foundations 21 in the second row of pile foundations 21 can be 30.3 m, the pile diameter can be 900 mm, the wall thickness can be 16 mm, and the depth of the pile foundations 21 into the mud can be 10 m; the spacing between the first row of pile foundations 21 and the second row of pile foundations 21 can be 30 m; and the inclination angle of the grid assembly 10 relative to the sea level can be 10°. Figure 3 In some embodiments, as shown in FIG. 1, the number of rows of pile foundations 21 of the pile foundation assembly 20 can be two, including a first row of pile foundations 21 and a second row of pile foundations 21, and the number of pile foundations 21 in the first row of pile foundations 21 and the second row of pile foundations 21 can each be four, i.e., the total number of pile foundations 21 in the pile foundation assembly 20 is eight. The length of the pile foundations 21 in the first row of pile foundations 21 can be 25.2 m, the pile diameter can be 1200 mm, the wall thickness can be 18 mm, and the depth of the pile foundations 21 into the mud can be 10 m; the length of the pile foundations 21 in the second row of pile foundations 21 can be 30.3 m, the pile diameter can be 900 mm, the wall thickness can be 16 mm, and the depth of the pile foundations 21 into the mud can be 10 m; the spacing between the first row of pile foundations 21 and the second row of pile foundations 21 can be 30 m; and the inclination angle of the grid assembly 10 relative to the sea level can be 10°.

[0059] Figure 4 In some embodiments, as shown in FIG. 1, the number of rows of pile foundations 21 of the pile foundation assembly 20 can be two, including a first row of pile foundations 21 and a second row of pile foundations 21, and the number of pile foundations 21 in the first row of pile foundations 21 and the second row of pile foundations 21 can each be four, i.e., the total number of pile foundations 21 in the pile foundation assembly 20 is eight. The length of the pile foundations 21 in the first row of pile foundations 21 can be 25.2 m, the pile diameter can be 1200 mm, the wall thickness can be 18 mm, and the depth of the pile foundations 21 into the mud can be 10 m; the length of the pile foundations 21 in the second row of pile foundations 21 can be 30.3 m, the pile diameter can be 900 mm, the wall thickness can be 16 mm, and the depth of the pile foundations 21 into the mud can be 10 m; the spacing between the first row of pile foundations 21 and the second row of pile foundations 21 can be 30 m; and the inclination angle of the grid assembly 10 relative to the sea level can be 10°.

[0060] It should be noted that the depth of the pile foundations 21 into the mud refers to the length of one end of the pile foundations 21 inserted or sunk into the soil in order to be fixed vertically to the sea level. In the embodiments provided in the present disclosure, the depth of the pile foundations 21 into the mud can be understood as a part of the length of the pile foundations 21, i.e., the total length of a single pile foundation 21 includes the depth of the pile foundations 21 into the mud. The depth of the pile foundations 21 into the mud can refer to the vertical distance of the part of the pile foundations 21 inserted into the mud at the sea bottom, since the insertion of the pile foundations 21 into the mud is in the direction perpendicular to the sea level, but due to the existence of insertion errors, when the angle between the axis of the pile foundations 21 and the first plane (a plane perpendicular to the sea level) is less than or equal to 10°, it can be considered that the pile foundations 21 and the sea level are perpendicular to each other.

[0061] ​In the above embodiment of the present disclosure, the penetration depths of the pile foundations 21 in the pile foundation assembly 20 are equal, but after adaptive adjustment of the parameters of the pile foundations 21, the penetration depths of the pile foundations 21 can also be adjusted according to actual design requirements. For example, the size parameters (such as length, pile diameter, wall thickness, etc.), spacing, and penetration depths of the pile foundations 21 can be adjusted in coordination according to the support force requirements of different parts of the truss assembly 10 and the angle requirements between the truss assembly 10 and the sea level, so that the pile foundation assembly 20 meets the position requirements and support requirements of the truss assembly 10.

[0062] In another embodiment provided by the present disclosure, as shown in Figure 2 two rows of pile foundations 21 are arranged in the pile foundation assembly 20, and each row of pile foundations 21 includes two pile foundations 21, that is, the number of pile foundations 21 in the pile foundation assembly 20 can be four, and the four pile foundations 21 are arranged at positions close to the four corners of the truss assembly 10, and the distances of the four pile foundations 21 from the center of gravity of the truss are equal. When the number of pile foundations 21 corresponding to each truss assembly 10 is four and the distance between the adjacent two pile foundations 21 is 40 m, the uniformity of the load bearing of the pile foundations 21 and the stability and balance of the support of the truss assembly 10 can be ensured.

[0063] In this embodiment, the distances of the four pile foundations 21 in the pile foundation assembly 20 from the center of gravity of the truss are equal, which can ensure the stability of the support of the truss assembly 10 by the pile foundation assembly 20 and the uniformity of the stress of the pile foundation assembly 20, and avoid deformation of some or all of the pile foundations 21 due to uneven stress, damage after long-term use, and thus increase the service life of the pile foundation assembly 20.

[0064] In this embodiment, the distances of the four pile foundations 21 in the pile foundation assembly 20 from the center of gravity of the truss are equal, which can ensure the stability of the support of the truss assembly 10 by the pile foundation assembly 20 and the uniformity of the stress of the pile foundation assembly 20, and avoid deformation of some or all of the pile foundations 21 due to uneven stress, damage after long-term use, and thus increase the service life of the pile foundation assembly 20.

[0065] The offshore photovoltaic support structure provided by the present disclosure forms support and fixation to the net rack assembly 10 through the pile foundation assembly 20, the pile foundation assembly 20 comprises at least two independent pile foundations 21, and the axis of each pile foundation 21 is arranged in the direction perpendicular to the sea level, the distance between the adjacent two pile foundations 21 is 30-50m, through the specific structure of the pile foundation assembly 20, the pile foundation assembly 20 can realize sufficient support to the net rack assembly 10, meanwhile, the structure simplicity of the pile foundation assembly 20 is ensured, and the functionality and economy of the pile foundation assembly 20 are considered; in addition, each pile foundation 21 in the pile foundation assembly 20 has independence, and the linkage damage phenomenon of multiple pile foundations 21 is avoided.

[0066] The offshore photovoltaic system provided by the present disclosure comprises the offshore photovoltaic support structure, the second surface 12 of the net rack assembly 10 of the offshore photovoltaic support structure is used for fixedly connecting the photovoltaic assembly, the photovoltaic assembly comprises multiple photovoltaic panels 30 arranged in an array, the multiple photovoltaic panels 30 can be arranged in an array on the net rack assembly 10, and each photovoltaic panel 30 can receive solar energy and convert the solar energy into electric energy.

[0067] The offshore photovoltaic support structure is arranged on the sea level, and is used for providing support and fixation to the photovoltaic assembly arranged on the sea surface. The photovoltaic assembly can comprise multiple photovoltaic panels 30, and the specific structure of each photovoltaic panel 30 can be understood as a photovoltaic structure available in the art, and the specific number of the photovoltaic panels 30 in the photovoltaic assembly can be adaptively selected and adjusted according to actual design requirements. In addition, the offshore photovoltaic support structure is usually arranged above the sea level or most of the structure is arranged above the sea level, so as to stably support the photovoltaic assembly.

[0068] The offshore photovoltaic system provided by the present disclosure comprises the offshore photovoltaic support structure, has good structural stability, can withstand the impact of a relatively harsh offshore environment, and is convenient for laying and maintenance.

[0069] Other embodiments of the present disclosure will be readily apparent to those skilled in the art upon considering the description herein, together with the appended claims. The present application is intended to cover any variations, uses, or adaptations of the present disclosure following, in general, the principles of the present disclosure and including such departures from the present disclosure that come within known or customary practice within the art to which the present disclosure pertains. The teachings of the present disclosure can be applied to not only to the presently disclosed embodiments and aspects, but to other products and applications as well. The present disclosure is not intended to be limited to the embodiments shown, and it is therefore understood that various changes can be made by those skilled in the art without departing from the scope of the present disclosure. The application is not to be limited to the details shown, since the spirit and scope of the application are to be governed by the language of the following claims.

Claims

1. An offshore photovoltaic support structure, characterized by, The offshore photovoltaic support structure comprises: a net rack assembly having a first face and a second face arranged oppositely, the first face being located between the second face and a sea level; a pile foundation assembly, one end of the pile foundation assembly being connected with the first face, and an axis of the pile foundation assembly being located in a plane intersecting the first face, the other end of the pile foundation assembly extending and being fixed below the sea level; the pile foundation assembly comprises at least two piles, each of the piles being independently arranged, and an axis of each of the piles being arranged in a direction perpendicular to the sea level, and a distance between two adjacent piles being 30m-50m.

2. Offshore photovoltaic support structure according to claim 1, characterized in that, a first face and a second face of the net rack assembly are coincident in orthographic projection on the sea level, and the first face is enclosed by two short sides and two long sides; the pile foundation assembly comprises at least two rows of pile foundation rows, each of the pile foundation rows comprising at least two piles, each of the pile foundation rows being arranged in sequence along a direction of one of the short sides, and a projection of each of the pile foundation rows on a first plane being at least partially overlapped, the first plane being a plane perpendicular to the sea level.

3. Offshore photovoltaic support structure according to claim 2, characterized in that, In a direction parallel to the short sides, heights of the pile foundation rows are sequentially increased or sequentially decreased.

4. The offshore photovoltaic support structure of claim 3, wherein, The heights of the piles in each of the pile foundation rows are the same, and in each of the pile foundation rows, a distance between two adjacent piles is equal.

5. The offshore photovoltaic support structure of claim 2, wherein, The number of the piles is four, and the four piles are arranged at positions close to four corners of the net rack assembly, and distances between the four piles and a center of gravity of the net rack are equal.

6. The offshore photovoltaic support structure of claim 5, wherein, A distance between two adjacent piles is 40m.

7. The offshore photovoltaic support structure of claim 1, wherein, An angle between the first face of the net rack assembly and the sea level is 10°-20°.

8. The offshore photovoltaic support structure of claim 1, wherein, The piles are hollow structures.

9. Offshore photovoltaic support structure according to any of claims 1-8, characterized in that, The piles are steel piles, concrete piles or reinforced concrete piles.

10. An offshore photovoltaic system, characterized in that, The offshore photovoltaic support structure comprises: a net rack assembly having a first face and a second face arranged oppositely, the first face being located between the second face and a sea level; a pile foundation assembly, one end of the pile foundation assembly being connected with the first face, and an axis of the pile foundation assembly being located in a plane intersecting the first face, the other end of the pile foundation assembly extending and being fixed below the sea level; the pile foundation assembly comprises at least two piles, each of the piles being independently arranged, and an axis of each of the piles being arranged in a direction perpendicular to the sea level, and a distance between two adjacent piles being 30m-50m. a first face and a second face of the net rack assembly are coincident in orthographic projection on the sea level, and the first face is enclosed by two short sides and two long sides; the pile foundation assembly comprises at least two rows of pile foundation rows, each of the pile foundation rows comprising at least two piles, each of the pile foundation rows being arranged in sequence along a direction of one of the short sides, and a projection of each of the pile foundation rows on a first plane being at least partially overlapped, the first plane being a plane perpendicular to the sea level. In a direction parallel to the short sides, heights of the pile foundation rows are sequentially increased or sequentially decreased. The heights of the piles in each of the pile foundation rows are the same, and in each of the pile foundation rows, a distance between two adjacent piles is equal. The number of the piles is four, and the four piles are arranged at positions close to four corners of the net rack assembly, and distances between the four piles and a center of gravity of the net rack are equal. A distance between two adjacent piles is 40m. An angle between the first face of the net rack assembly and the sea level is 10°-20°. The piles are hollow structures. The piles are steel piles, concrete piles or reinforced concrete piles. The offshore photovoltaic support structure comprises: a net rack assembly having a first face and a second face arranged oppositely, the first face being located between the second face and a sea level; a pile foundation assembly, one end of the pile foundation assembly being connected with the first face, and an axis of the pile foundation assembly being located in a plane intersecting the first face, the other end of the pile foundation assembly extending and being fixed below the sea level; the pile foundation assembly comprises at least two piles, each of the piles being independently arranged, and an axis of each of the piles being arranged in a direction perpendicular to the sea level, and a distance between two adjacent piles being 30m-50m. a first face and a second face of the net rack assembly are coincident in orthographic projection on the sea level, and the first face is enclosed by two short sides and two long sides; the pile foundation assembly comprises at least two rows of pile foundation rows, each of the pile foundation rows comprising at least two piles, each of the pile foundation rows being arranged in sequence along a direction of one of the short sides, and a projection of each of the pile foundation rows on a first plane being at least partially overlapped, the first plane being a plane perpendicular to the sea level. In a direction parallel to the short sides, heights of the pile foundation rows are sequentially increased or sequentially decreased. The heights of the piles in each of the pile foundation rows are the same, and in each of the pile foundation rows, a distance between two adjacent piles is equal. The number of the piles is four, and the four piles are arranged at positions close to four corners of the net rack assembly, and distances between the four piles and a center of gravity of the net rack are equal. A distance between two adjacent piles is 40m. An angle between the first face of the net rack assembly and the sea level is 10°-20°. The piles are hollow structures. The piles are steel piles, concrete piles or reinforced concrete piles. The offshore photovoltaic support structure comprises: a net rack assembly having a first face and a second face arranged oppositely, the first face being located between the second face and a sea level; a pile foundation assembly, one end of the pile foundation assembly being connected with the first face, and an axis of the pile foundation assembly being located in a plane intersecting the first face, the other end of the pile foundation assembly extending and being fixed below the sea level; the pile foundation assembly comprises at least two piles, each of the piles being independently arranged, and an axis of each of the piles being arranged in a direction perpendicular to the sea level, and a distance between two adjacent piles being 30m-50m. a first face and a second face of the net rack assembly are coincident in orthographic projection on the sea level, and the first face is enclosed by two short sides and two long sides; the pile foundation assembly comprises at least two rows of pile foundation rows, each of the pile foundation rows comprising at least two piles, each of the pile foundation rows being arranged in sequence along a direction of one of the short sides, and a projection of each of the pile foundation rows on a first plane being at least partially overlapped, the first plane being a plane perpendicular to the sea level. In a direction parallel to the short sides, heights of the pile foundation rows are sequentially increased or sequentially decreased. The heights of the piles in each of the pile foundation rows are the same, and in each of the pile foundation rows, a distance between two adjacent piles is equal. The number of the piles is four, and the four piles are arranged at positions close to four corners of the net rack assembly, and distances between the four piles and a center of gravity of the net rack are equal. A distance between two adjacent piles is 40m. An angle between the first face of the net rack assembly and the sea level is 10°-20°. The piles are hollow structures. The piles are steel piles, concrete piles or reinforced concrete piles. The offshore photovoltaic support structure comprises: a net rack assembly having a first face and a second face arranged oppositely, the first face being located between the second face and a sea level; a pile foundation assembly, one end of the pile foundation assembly being connected with the first face, and an axis of the pile foundation assembly being located in a plane intersecting the first face, the other end of the pile foundation assembly extending and being fixed below the sea level; the pile foundation assembly comprises at least two piles, each of the piles being independently arranged, and an axis of each of the piles being arranged in a direction perpendicular to the sea level, and a distance between two adjacent piles being 30m-50m. a first face and a second face of the net rack assembly are coincident in orthographic projection on the sea level, and the first face is enclosed by two short sides and two long sides; the pile foundation assembly comprises at least two rows of pile foundation rows, each of the pile foundation rows comprising at least two piles, each of the pile foundation rows being arranged in sequence along a direction of one of the short sides, and a projection of each of the pile foundation rows on a first plane being at least partially overlapped, the first plane being a plane perpendicular to the sea level. In a direction parallel to the short sides, heights of the pile foundation rows are sequentially increased or sequentially decreased. The heights of the piles in each of the pile foundation rows are the same, and in each of the pile foundation rows, a distance between two adjacent piles is equal. The number of the piles is four, and the four piles are arranged at positions close to four corners of the net rack assembly, and distances between the four piles and a center of gravity of the net rack are equal. A distance between two adjacent piles is 40m.

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