External winding anti-corrosion structure for offshore photovoltaic support node

Abstract

The utility model provides an external winding anti-corrosion structure for an offshore photovoltaic support node, and relates to the technical field of offshore photovoltaic. Comprising a bolt-sphere joint, a supporting rod, a sealing part and an anti-corrosion adhesive layer, a plurality of end faces are arranged in the circumferential direction of the bolt-sphere joint, each end face is provided with a connecting part, and a first gap is formed between each connecting part and the corresponding end face; the supporting rod is connected with the bolt-sphere joint through the connecting part; a second gap is formed between the end part of the supporting rod and the other end of the connecting part; the sealing part comprises a first sealing part and a second sealing part which are formed by sealing mud, the first gap is filled with the first sealing part, the surface of the first sealing part is flush with the outer surface, close to the end face, of the connecting part, the second gap is filled with the second sealing part, and the surface of the second sealing part is flush with the outer surface, close to the supporting rod, of the connecting part; the anti-corrosion adhesive layer covers the surfaces of the first sealing part and the second sealing part at the same time. By forming the sealing part and the anti-corrosion adhesive layer, the anti-corrosion property and the strength of the bracket can be improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of photovoltaic technology, in particular, to an external winding anti-corrosion structure for a marine photovoltaic support node. 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 energy is derived from solar energy, which is a clean, safe and renewable energy source. Therefore, photovoltaic power generation has good application prospects.

[0003] At present, most photovoltaic power generation systems are installed on land. However, due to the limited space on land 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 installation. However, due to the strong corrosive nature of seawater, the support structure of photovoltaic will be corroded, which reduces the strength and service life of the support, and even causes the support to be damaged, resulting in the photovoltaic falling off.

[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 external winding anti-corrosion structure for a marine photovoltaic support node is provided. By forming a sealing portion at the gap of the support and covering the surface of the sealing portion with an anti-corrosion glue layer, the corrosion of the support connection can be effectively prevented, thereby improving the strength and service life of the support.

[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 external winding anti-corrosion structure for a marine photovoltaic support node is provided, which is arranged on the sea level and used to support a photovoltaic component. The support includes:

[0008] A bolt ball node has a plurality of end faces in the circumferential direction, and a connecting portion is arranged on each end face. The connecting portion has a first gap between one end and the end face.

[0009] A support rod is connected to the bolt ball node through the connecting portion. The support rod has a second gap between the end of the support rod and the other end of the connecting portion. The support rod is used to support the photovoltaic component.

[0010] a sealing part including a first sealing part and a second sealing part formed by sealing mud, the first sealing part being filled in the first gap and a surface of the first sealing part being flush with an outer surface of the connecting part near the end face, the second sealing part being filled in the second gap and a surface of the second sealing part being flush with an outer surface of the connecting part near the support rod;

[0011] a corrosion-resistant rubber layer covering surfaces of the first sealing part and the second sealing part.

[0012] In an exemplary embodiment of the present disclosure, the corrosion-resistant rubber layer is in a sheet structure, and the corrosion-resistant rubber layer is tightly attached to an outer surface formed by a surface of the first sealing part, a surface of the second sealing part, and an outer surface of the connecting part.

[0013] In an exemplary embodiment of the present disclosure, one end of the corrosion-resistant rubber layer is overlapped on an outer surface of an end portion of the support rod, and the other end of the corrosion-resistant rubber layer is overlapped on the end face of the bolted spherical joint.

[0014] In an exemplary embodiment of the present disclosure, the corrosion-resistant rubber layer includes a first rubber layer and a second rubber layer, the first rubber layer being tightly attached to the surface of the first sealing part, and the second rubber layer being tightly attached to the surface of the second sealing part.

[0015] In an exemplary embodiment of the present disclosure, one end of the first rubber layer is overlapped on the end face of the bolted spherical joint, and one end of the second rubber layer is overlapped on the outer surface of the support rod.

[0016] In an exemplary embodiment of the present disclosure, in a direction perpendicular to an axis of the connecting part, the corrosion-resistant rubber layer is at least two layers, and each layer of the corrosion-resistant rubber layer is stacked with an adjacent layer of the corrosion-resistant rubber layer in a manner of being wound along a circumferential direction of the connecting part.

[0017] In an exemplary embodiment of the present disclosure, the corrosion-resistant rubber layer has self-adhesion.

[0018] In an exemplary embodiment of the present disclosure, in a direction perpendicular to an axis of the connecting part, the sealing part is formed by at least one layer of the sealing mud.

[0019] In an exemplary embodiment of the present disclosure, the support rod is screwed with the bolted spherical joint.

[0020] In an exemplary embodiment of the present disclosure, the corrosion-resistant rubber layer is a cold-wound petrolatum tape.

[0021] The external winding anticorrosion structure for the offshore photovoltaic support node provided by the present disclosure is used for the offshore photovoltaic support node, and the support includes a bolt ball node and a support rod connected with the bolt ball node through a connecting part. The bolt ball node and the connecting part have a first gap, and the connecting part and the support rod have a second gap. The first sealing part filling the first gap and the second sealing part filling the second gap are formed by using sealing mud, so that the sealing and anticorrosion among the bolt ball node, the connecting part and the support rod are achieved. Meanwhile, an anticorrosion glue layer is covered on the surface of the first sealing part and the second sealing part, so that the sealing and anticorrosion of the connecting part of the support are further strengthened, the overall corrosion resistance of the support is improved, and the strength and service life of the support are improved.

[0022] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings incorporated into the specification and forming a part of the specification, show embodiments consistent with the present disclosure, and together with the specification, serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 The structure diagram of the external winding anticorrosion structure for the offshore photovoltaic support node in an exemplary embodiment of the present disclosure.

[0025] Figure 2 The structure diagram of the anticorrosion glue layer in an exemplary embodiment of the present disclosure.

[0026] Figure 3 The structure diagram of another anticorrosion glue layer in an exemplary embodiment of the present disclosure.

[0027] Figure 4 The partial structure diagram of the offshore photovoltaic support in an exemplary embodiment of the present disclosure.

[0028] Figure 5 The structure diagram of the offshore photovoltaic support in an exemplary embodiment of the present disclosure.

[0029] In the drawings, the reference signs are explained as follows:

[0030] 10, bolt ball node; 20, connecting part; 30, support rod; 41, first sealing part; 42, second sealing part; 50, anticorrosion glue layer; 51, first glue layer; 52, second glue layer; 201, first gap; 202, second gap; 100, support. DETAILED DESCRIPTION

[0031] Example implementations are now described with reference to the drawings. Example implementations can, however, 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 implementations to those skilled in the art. Like reference numerals refer to like or similar elements throughout the present disclosure, thus a detailed description of them will not be repeated. In addition, the drawings are merely schematic and are not intended to be to scale.

[0032] 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 intended to be limiting. It is to be understood that if the icon is turned over, the component described as "upper" will then become the "lower" 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 by way of another structure.

[0033] The terms "one", "a", "an", "the", and "at least one" are used to mean that "zero", "one", or "more than one" of the element is present; the term "includes" and the term "comprising", and variations thereof, mean "open ended" and do not exclude additional elements; the term "first", "second", and "third", and the like, are used merely as labels, and are not meant to impose numerical requirements on their objects.

[0034] In the related art, since the photovoltaic is a device for converting solar energy into electrical energy, the setting of the photovoltaic needs to be set according to the angle of the sun, so that the setting position of the photovoltaic has a higher requirement. Since it is easier to set the photovoltaic support structure on land, the current application of photovoltaic is mainly on land, and the corrosion factors of the photovoltaic support structure on land are less, and the corrosion prevention of the photovoltaic support structure only considers the land influencing factors.

[0035] But based on the limitation of land, the photovoltaic is now considered to be set on the sea surface to improve the efficiency of the photovoltaic, but due to the strong corrosiveness of seawater, the conventional corrosion prevention measures cannot meet the corrosion prevention requirements of the photovoltaic support structure on the sea surface, especially the connection gap between the connecting parts in the support structure, which makes the corrosion problem more serious, causes the connection between the parts to break, affects the overall strength and supporting effect of the support structure, and in severe cases, the support structure will be damaged.

[0036] It should be noted that the external winding corrosion protection structure for the offshore photovoltaic support node provided by the present disclosure is arranged on the sea level, and is used to provide support and fixing effects for the photovoltaic assembly arranged on the sea surface. The photovoltaic assembly can include a plurality of photovoltaic panels, and the specific structure of each photovoltaic panel can be understood as a photovoltaic structure available in the art. The specific number of photovoltaic panels in the photovoltaic assembly can be adaptively selected and adjusted according to actual design needs. In addition, the external winding corrosion protection structure for the offshore photovoltaic support node is usually arranged above the sea level or most of the structure is arranged above the sea level to support the photovoltaic assembly. The fixing and support of the support on the sea level can usually be achieved by using the setting of the pile foundation, but the present disclosure is not limited thereto, and other structures can also be used to support and fix the support.

[0037] Based on this, the present embodiment provides an external winding corrosion protection structure for an offshore photovoltaic support node, as shown in Figure 1 Figures 2 to 5 The structure includes a bolt ball node 10, a support rod 30, a sealing part, and a corrosion protection glue layer 50.

[0038] The bolt ball node 10 has a plurality of end faces in the circumferential direction, and each end face is provided with a connecting part 20. The connecting part 20 has a first gap 201 between one end and the end face. The support rod 30 is connected to the bolt ball node 10 through the connecting part 20, and the support rod 30 has a second gap 202 between the end and the other end of the connecting part 20. The support rod 30 is used to support the photovoltaic assembly. The sealing part includes a first sealing part 41 and a second sealing part 42 formed by sealing mud. The first sealing part 41 is filled in the first gap 201, and the surface of the first sealing part 41 is flush with the outer surface of the connecting part 20 close to the end face. The second sealing part 42 is filled in the second gap 202, and the surface of the second sealing part 42 is flush with the outer surface of the connecting part 20 close to the support rod 30. The corrosion protection glue layer 50 covers the surfaces of the first sealing part 41 and the second sealing part 42.

[0039] ​The external corrosion prevention structure for the offshore photovoltaic support node provided by the present disclosure comprises a bolt ball node 10 and a support rod 30, wherein the bolt ball node 10 comprises a connecting part 20, and one end of the support rod 30 is connected with the bolt ball node 10 through the connecting part 20. Since the support rod 30, the connecting part 20 and the bolt ball node 10 are all structural members, there will be gaps or cracks when they are connected, especially there is a first gap 201 between the end faces of the connecting part 20 and the bolt ball node 10, and there is a second gap 202 between the support rod 30 and the connecting part 20. By filling sealing mud in the first gap 201 and the second gap 202, a first sealing part 41 and a second sealing part 42 are respectively formed, and the first sealing part 41 and the second sealing part 42 are flush with the outer surface of the connecting part 20. At the same time, a corrosion prevention glue layer 50 is formed on the surface of the sealing part. On the one hand, the corrosion prevention glue layer 50 can prevent substances with strong corrosive properties such as seawater from entering the sealing part, and the corrosion prevention glue layer 50 can preliminarily protect the connecting part 20 of each component. On the other hand, by filling sealing mud in the connecting part of each component to form a sealing part, the corrosion prevention glue layer 50 can further prevent corrosive substances from entering the inside of the support 100, thereby further improving the corrosion resistance of the support 100. The present disclosure provides the sealing part and the corrosion prevention glue layer 50, which can greatly improve the corrosion resistance of the support 100, thereby improving the strength and service life of the support 100.

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

[0041] In the embodiments provided by the present disclosure, as shown in Figure 1 The structure comprises a bolt ball node 10, and the bolt ball node 10 has a plurality of end faces in the circumferential direction. A connecting part 20 is arranged on each end face, and a first gap 201 is formed between one end of the connecting part 20 and the end face.

[0042] The bolt ball node 10 can refer to a spherical or spherical-shaped ball body, which can be a spherical or spherical-shaped body made of metal, such as a steel ball. A plurality of end faces can be arranged on the outer surface of the ball body, and each end face is a plane, i.e., a plane contact surface, so as to be connected with subsequent components, increase the contact area of the ball body and the end face of the other component, and thereby improve the connection reliability. Of course, the surface area and surface shape of the plurality of end faces can be the same or different, and can be designed and selected according to the components connected by each end face. However, in order to facilitate the process manufacturing, the surface area and surface shape of the plurality of end faces on the same ball body are usually the same or substantially the same. In addition, a threaded hole is arranged on each end face, and the connecting part 20 is connected with the threaded hole, so as to realize the connection between the connecting part 20 and the ball body.

[0043] The bolt ball node 10 provided by the present disclosure further comprises a connecting part 20, asFigure 1 As shown, the connecting part 20 can include other parts having a connecting effect in addition to the ball body, such as the connecting part 20 can include multiple parts such as bolts, sleeves and cone heads matched with the ball body.

[0044] In the present disclosure, the bolt ball node 10 and the connecting part 20 constitute the overall structure of the bolt ball node 10. Among them, the connection principle of the bolt ball node 10 including the connecting part 20 is: first, the cone head or the sealing plate provided with the bolt is welded at both ends of the support rod 30, the long hexagonal sleeve (or other parts with the same function) is sleeved on the screw rod extending from the cone head or the sealing plate, and the bolt and the sleeve are connected together by the pin or the fastening screw. When assembling, the long hexagonal sleeve is directly screwed, the bolt is driven to rotate through the pin or the fastening screw, so that the bolt is screwed into the ball, until the bolt head is tightly attached to the sealing plate or the cone head. After each intersection support rod 30 is connected in this way, the node is formed, and the tightening degree of the bolt is controlled by the pin. Of course, the connecting part 20 provided by the present disclosure can include each part in the above principle or the corresponding deformed part. The above connection principle is only illustrative, and there can be other corresponding connection methods for deformed parts, which should be understood as being within the protection scope of the present disclosure.

[0045] The support 100 provided by the present disclosure can include a plurality of bolt ball nodes 10 and a plurality of support rods 30, such as Figure 4 and Figure 5 As shown, each bolt ball node 10 can connect a plurality of support rods 30, the ends of the plurality of support rods 30 are connected with the bolt ball node 10, and the plurality of support rods 30 extend in a radial state away from the bolt ball node 10, and the position between the plurality of support rods 30 can be set to form a support 100 having a supporting effect on the photovoltaic module. The number and position of the support rod 30 and the bolt ball node 10 can be set and adaptively adjusted according to the actual design requirements of the structure of the support 100 to meet the support requirements of the photovoltaic module.

[0046] Among them, the support rod 30 can be made of metal, such as steel pipe, copper pipe, aluminum pipe, titanium alloy pipe, etc. Of course, the support member can also be made of a metal pipe with a coating or plating layer to improve the corrosion resistance and durability of the support member. In the present disclosure, the plurality of support rods 30 can be made of the same material, such as steel, or different metal materials can be selected according to the contact with seawater.

[0047] The support rod 30 is screwed with the bolt ball node 10, as stated above for the connection principle of the bolt ball node 10, the support rod 30 can be connected with the bolt ball node 10 through the connecting part 20 including the bolt. However, the inventors found that no matter the connection between the support rod 30 and the connecting part 20 or the connection between the connecting part 20 and the bolt ball node 10, there are gaps or gaps, which are easy to penetrate substances with corrosive or erosive effects such as seawater during subsequent use of the support 100. Under the action of these substances, the above-mentioned connecting part 20 is prone to corrosion, which can cause the entire support 100 to be damaged or even collapsed. Therefore, for the weak and easily corroded parts such as the connecting part 20 in the above-mentioned support 100, the corrosion resistance needs to be further improved.

[0048] Therefore, in the present disclosure, since the first gap 201 is between one end of the connecting part 20 and the end face of the bolt ball node 10, and the second gap 202 is between the end of the support rod 30 and the other end of the connecting part 20, by using the method of filling with sealing mud, the first gap 201 and the second gap 202 are filled, and the first sealing part 41 is formed in the first gap 201, and the second sealing part 42 is formed in the second gap 202.

[0049] Among them, the sealing mud can be one or more of mineral pitch mastic, polyurethane sealing mud, phenolic resin sealing mud and other sealing muds with good sealing performance and acid and alkali resistance. In order to improve the density and filling quality of the sealing part, avoid defects such as air bubbles in the sealing part, and affect the sealing effect of the sealing part, the sealing part is formed by stacking at least one layer of sealing mud in the direction perpendicular to the axis of the connecting part 20. When the sealing mud is mineral pitch mastic, it can be Denso Profiling Mastic general mineral pitch mastic. This kind of mastic is a mineral pitch compound containing porous polymer beads and rheological additives, which has good sealing performance and corrosion resistance, and can provide a good interface basis for subsequent corrosion-resistant glue layer 50 coverage.

[0050] For example, in the direction perpendicular to the axis of the connecting portion 20, the size of the first gap 201 or the second gap 202 is small, and the sealing portion with a large internal density can be formed by filling the sealing mud once, so as to save the process, and the sealing portion can be formed in the form of one layer of sealing mud; but in the direction perpendicular to the axis of the connecting portion 20, the size of the first gap 201 or the second gap 202 is large, that is, when the first gap 201 and the second gap 202 are in an elongated structure, there are a large number of pores and bubbles in the interior of the sealing portion formed by one layer of sealing mud, which affects the density, sealing performance and strength of the sealing portion, and the sealing portion is prone to rupture or damage during subsequent use. In order to avoid the above defects, the sealing portion can be formed in the form of multiple filling, such as being formed by stacking in the form of at least two filling, that is, being formed by stacking in the form of at least two layers of sealing mud. When filling each layer of sealing mud, the bubbles in the interior of the sealing mud can be basically or completely discharged, the density and strength of the sealing portion are improved, and the corrosion resistance of the stent 100 is improved.

[0051] In the embodiments provided in the present disclosure, as shown in Figure 1 , in combination with Figure 2 and Figure 3 , in order to further improve the corrosion resistance and strength of the sealing portion, the corrosion-resistant glue layer 50 is covered on the surface of the sealing portion. In order to ensure the adhesion of the corrosion-resistant glue layer 50 on the sealing portion and improve the waterproofness or isolation of the corrosion-resistant glue layer 50 on the surface of the sealing portion, the surface of the first sealing portion 41 is flush with the outer surface of the connecting portion 20 close to the end face, and the surface of the second sealing portion 42 is flush with the outer surface of the connecting portion 20 close to the support rod 30, so that when the corrosion-resistant glue layer 50 is covered on the sealing portion, the uneven surface connection between the sealing portion and the adjacent components does not affect the corrosion resistance of the corrosion-resistant glue layer 50.

[0052] In addition, in order to further improve the adhesion between the sealing portion and the corrosion-resistant glue layer 50 and improve the protection of the corrosion-resistant glue layer 50 to the sealing portion, the surface of the sealing portion can be polished before the corrosion-resistant glue layer 50 is covered, so as to improve the smoothness of the surface of the sealing portion, thereby improving the adhesion between the sealing portion and the corrosion-resistant glue layer 50, and preventing burrs or other protrusions on the surface of the sealing portion from piercing the corrosion-resistant glue layer 50 when the corrosion-resistant glue layer 50 is covered on the surface of the sealing layer. In addition, before the corrosion-resistant glue layer 50 is covered on the sealing portion, clean compressed air can be used to blow the sealing portion, so as to remove contaminants such as dust and abrasives from the surface of the sealing portion, to form a sealing portion with good surface cleanliness, and to provide a basis for the subsequent formation of the corrosion-resistant glue layer 50.

[0053] In the present disclosure, the anticorrosive adhesive layer 50 can be made of a material with self-adhesion, such as the anticorrosive adhesive layer 50 can be one or more of a petrolatum adhesive tape, a polyethylene anticorrosive adhesive tape, a polypropylene fiber anticorrosive adhesive tape, and an epoxy coal tar anticorrosive cold-wound tape. Through the self-adhesion of the anticorrosive adhesive layer 50, the anticorrosive adhesive layer 50 can be fixed on the surface of the sealing portion, and the anticorrosive adhesive layer 50 itself can be fixed through its own adhesion. When the anticorrosive adhesive layer 50 is a cold-wound petrolatum tape, the Denso petrolatum adhesive tape can be selected, which is made of a stable gray petrolatum fully impregnated into a non-woven synthetic fiber fabric, has excellent acid, alkali and salt resistance, and is not prone to hardening and cracking during long-term use, thereby improving the corrosion resistance of the anticorrosive adhesive layer.

[0054] In an embodiment provided in the present disclosure, as shown in Figure 3 , in combination Figure 1 , the anticorrosive adhesive layer 50 has a one-piece structure, and the anticorrosive adhesive layer 50 is tightly attached to the outer surface formed by the surface of the first sealing portion 41, the surface of the second sealing portion 42, and the outer surface of the connecting portion 20. Taking the anticorrosive adhesive layer 50 as a polypropylene fiber anticorrosive adhesive tape as an example, when covering the surface of the sealing portion with the anticorrosive adhesive layer 50, a anticorrosive adhesive tape with a width not less than the width of the connecting portion 20 can be selected, one end of the anticorrosive adhesive tape is overlapped on one end of the connecting portion 20 close to the support rod 30, and the other end of the anticorrosive adhesive tape is overlapped on one end of the connecting portion 20 close to the end surface of the bolt-spherical joint 10, and the anticorrosive adhesive tape is wound around the connecting portion 20 as the axis.

[0055] The number of anticorrosive adhesive layers 50 can be one or more. In an embodiment provided in the present disclosure, in order to improve the sealing property and corrosion resistance of the anticorrosive adhesive layer 50, the anticorrosive adhesive layer 50 is at least two layers in the direction perpendicular to the axis of the connecting portion 20, and each anticorrosive adhesive layer 50 is stacked with the adjacent anticorrosive adhesive layer 50 in a winding manner along the circumferential direction of the connecting portion 20. In order to ensure the sealing property between each anticorrosive adhesive layer 50 and the adjacent anticorrosive adhesive layer 50, the air or bubbles between the layers can be discharged during each winding to ensure the sealing property of the anticorrosive adhesive layer 50 itself. In addition, the anticorrosive adhesive layer 50 close to the surface of the sealing portion also needs to be tightly attached to the surface of the sealing layer, that is, there is no attachment defect such as bubbles between the two surfaces, so as to improve the attachment of the anticorrosive adhesive layer 50 on the sealing portion and the protection of the anticorrosive adhesive layer 50 to the sealing portion.

[0056] In the present disclosure, the two side edges of the anticorrosion glue layer 50 can be flush with the edges of the first sealing part 41 and the second sealing part 42 away from the connecting part 20, or one end of the anticorrosion glue layer 50 can be overlapped on the outer surface of the end of the support rod 30, and the other end of the anticorrosion glue layer 50 can be overlapped on the end surface of the bolt-sphere joint 10, that is, the anticorrosion glue layer 50 can continue to extend outward after completely covering the first sealing part 41 and the second sealing part 42, so as to prevent corrosive substances from entering the inside of the sealing part through the connection between the anticorrosion glue layer 50 and the sealing part, thereby damaging the sealing part.

[0057] In another embodiment provided in the present disclosure, as shown in Figure 2 The anticorrosion glue layer 50 is in a split structure, that is, the anticorrosion glue layer 50 can include a first glue layer 51 and a second glue layer 52, the first glue layer 51 is tightly attached to the surface of the first sealing part 41, and the second glue layer 52 is tightly attached to the surface of the second sealing part 42.

[0058] For example, when the first glue layer 51 and the second glue layer 52 are both polypropylene fiber anticorrosion adhesive tapes, when covering the first glue layer 51 on the surface of the first sealing part 41, an anticorrosion adhesive tape with a width not less than the width of the first sealing part 41 can be selected, one end of the first glue layer 51 is overlapped on the end of the connecting part 20 close to the support rod 30, the other end of the first glue layer 51 is overlapped on the end of the first sealing part 41 close to the end surface of the bolt-sphere joint 10, and the anticorrosion adhesive tape is wound around the first sealing part 41 with the axis of the connecting part 20 as the axis. The second glue layer 52 can be sealed on the second sealing part 42 in the same or similar way as the first glue layer 51, which will not be described in detail here.

[0059] The number of the first glue layer 51 or the second glue layer 52 can be one or more, and when the number of the first glue layer 51 or the second glue layer 52 is more than one, the first glue layer 51 or the second glue layer 52 can be spirally stacked and wound on the surface of the first sealing part 41 or the second sealing part 42. In order to ensure the sealing between each layer of the anticorrosion glue layer 50 and the adjacent anticorrosion glue layer 50, air or bubbles between the layers can be discharged during each winding, so as to ensure the sealing of the first glue layer 51 and the second glue layer 52. In addition, the anticorrosion glue layer 50 close to the surface of the sealing part also needs to be tightly attached to the surface of the sealing layer, that is, there is no attachment defect such as bubbles between the two surfaces, so as to improve the attachment of the anticorrosion glue layer 50 on the sealing part, and improve the protection of the first glue layer 51 and the second glue layer 52 on the first sealing part 41 and the second sealing part 42.

[0060] In the present disclosure, the two side edges of the first glue layer 51 can be flush with the two side edges of the first sealing part 41 respectively, and the two side edges of the second glue layer 52 can be flush with the two side edges of the second sealing part 42 respectively; or one end of the first glue layer 51 can be overlapped on the end face of the bolt ball node 10, and the other end can be overlapped on the outer surface of the connecting part 20, one end of the second glue layer 52 can be overlapped on the outer surface of the support rod 30, and the other end can be overlapped on the outer surface of the connecting part 20, that is, after the first glue layer 51 completely covers the surface of the first sealing part 41, it continues to extend outward, and after the second glue layer 52 completely covers the surface of the second sealing part 42, it continues to extend outward, preventing corrosive substances from entering the interior of the first sealing part 41 and the second sealing part 42 through the edge position, thereby damaging the first sealing part 41 and the second sealing part 42.

[0061] In the present disclosure, the anti-corrosion glue layer 50 adopts a split structure, which can cover different sealing parts with the anti-corrosion glue layer 50 respectively, and can adapt to the anti-corrosion requirements of different parts of the support 100, for example, the anti-corrosion of the components near the sea level or in the sea can increase the number of anti-corrosion glue layers 50 or the number of sealing muds to improve the sealing and anti-corrosion of this place, and for parts with less anti-corrosion requirement, the anti-corrosion glue layer 50 with less number of layers can be appropriately used to save process and reduce anti-corrosion cost; in addition, when the anti-corrosion of different sealing parts is damaged, targeted anti-corrosion repair can be carried out without overall replacement, which reduces the difficulty of anti-corrosion repair and improves the efficiency and effect of anti-corrosion repair.

[0062] The external winding anti-corrosion structure for the offshore photovoltaic support node provided by the present disclosure fills the sealing mud in the first gap 201 between the connecting part 20 and the bolt ball node 10 and the second gap 202 between the connecting part 20 and the support rod 30 to form the first sealing part 41 and the second sealing part 42 respectively, and the outer surface of the connecting part 20 is flush with the first sealing part 41 and the second sealing part 42, and the anti-corrosion glue layer 50 is covered on the surface of the sealing part, on the one hand, the anti-corrosion glue layer 50 can prevent the entry of corrosive substances such as seawater into the sealing part, and the anti-corrosion glue layer 50 protects the connecting part 20 and the sealing part of each component, on the other hand, the sealing mud filled in the connecting part of each component forms the sealing part, which can further prevent corrosive substances from entering the interior of the support 100, and further improve the corrosion resistance of the support 100, the present disclosure provides the double anti-corrosion effect of the sealing part and the anti-corrosion glue layer 50, which can greatly improve the corrosion resistance of the support 100, and further improve the strength and service life of the support 100.

[0063] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. An external wrapping corrosion protection structure for a node of an offshore photovoltaic support, the offshore photovoltaic support being disposed at sea level for supporting photovoltaic modules, characterized in that, The utility model relates to a kind of photovoltaic module support structure, including: Bolt ball node, the circumferential direction of the bolt ball node has multiple end faces, a connecting part is arranged on each end face, the first gap between the one end of the connecting part and the end face; Supporting rod, the supporting rod is connected with the bolt ball node by the connecting part, the second gap between the end of the supporting rod and the other end of the connecting part, the supporting rod is used to support the photovoltaic module; Sealing part, the sealing part includes the first sealing part and the second sealing part formed by sealing mud, the first sealing part is filled in the first gap, and the surface of the first sealing part is flush with the outer surface of the connecting part close to the end face, the second sealing part is filled in the second gap, and the surface of the second sealing part is flush with the outer surface of the connecting part close to the supporting rod; Anti-corrosion rubber layer, the anti-corrosion rubber layer is simultaneously covered on the surface of the first sealing part and the second sealing part.

2. The external wrapped corrosion protection structure for offshore photovoltaic support nodes according to claim 1, characterized in that, The anti-corrosion rubber layer is a one-piece structure, and the anti-corrosion rubber layer is tightly attached to the outer surface formed by the surface of the first sealing part, the surface of the second sealing part and the outer surface of the connecting part.

3. The external wrapped corrosion protection structure for offshore photovoltaic support nodes according to claim 2, characterized in that, One end of the anti-corrosion rubber layer is overlapped on the outer surface of the end of the supporting rod, and the other end of the anti-corrosion rubber layer is overlapped on the end face of the bolt ball node.

4. The external wrapped corrosion protection structure for offshore photovoltaic support nodes according to claim 1, characterized in that, The anti-corrosion rubber layer includes a first rubber layer and a second rubber layer, the first rubber layer is tightly attached to the surface of the first sealing part, and the second rubber layer is tightly attached to the surface of the second sealing part.

5. The external wrapped corrosion protection structure for offshore photovoltaic support nodes according to claim 4, characterized in that, One end of the first rubber layer is overlapped on the end face of the bolt ball node, and one end of the second rubber layer is overlapped on the outer surface of the supporting rod.

6. An external wrapping corrosion protection structure for offshore photovoltaic support nodes according to any of claims 1-5, characterized in that, In the direction perpendicular to the axis of the connecting part, the anti-corrosion rubber layer is at least two layers, and each layer of the anti-corrosion rubber layer is stacked with the adjacent anti-corrosion rubber layer in the form of winding along the circumferential direction of the connecting part.

7. An external wrapping corrosion protection structure for offshore photovoltaic support nodes according to any of claims 1-5, characterized in that, The anti-corrosion rubber layer has self-adhesion.

8. The external wrapped corrosion protection structure for offshore photovoltaic support nodes according to claim 1, characterized in that, In the direction perpendicular to the axis of the connecting part, the sealing part is formed by at least one layer of sealing mud.

9. The external wrapped corrosion protection structure for offshore photovoltaic support nodes according to claim 1, characterized in that, The supporting rod is screwed with the bolt ball node.

10. The external wrapped corrosion protection structure for offshore photovoltaic support nodes according to claim 1, characterized in that, The anti-corrosion rubber layer is a cold-wound petrolatum tape.

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