Photovoltaic support pile foundation structure

Abstract

The utility model relates to the technical field of supporting structures of photovoltaic power generation equipment, and provides a photovoltaic support pile foundation structure which comprises a pile body and a connector. The connecting joint is fixed in the pile body, and the connecting part of the connecting joint extends out of the pile body from the top of the pile body; an anti-corrosion coating is arranged on the outer surface of the pile body, and a waterproof anti-corrosion mortar layer is further arranged on the outer side of the anti-corrosion coating. Furthermore, a stainless steel wire sleeve net is further arranged in the waterproof and anti-corrosion mortar layer. Compared with the prior art, the photovoltaic support pile foundation structure can improve corrosion resistance and alkali resistance, prolongs service life, and can be applied to medium and high corrosion geology.

Description

Technical Field

[0001] This utility model relates to the technical field of support structure for photovoltaic power generation equipment, and in particular to a photovoltaic support pile foundation structure. Background Technology

[0002] Photovoltaic power generation is a technology that directly converts light energy into electrical energy using the photovoltaic effect at the semiconductor interface. As a representative of clean energy, photovoltaic power generation has significant social and economic benefits. With the maturity of crystalline silicon technology and the improvement of the industrial chain, the photovoltaic industry has developed rapidly, with a large number of photovoltaic power plants springing up and expanding in scale.

[0003] In photovoltaic (PV) power plants, PV mounting systems are crucial load-bearing structures for installing PV modules, and these systems are typically supported by concrete piles or steel pipe piles. However, many PV power plants are built in various medium- to highly corrosive geological environments, such as coastal areas and saline-alkali land. Due to the unique characteristics of these environments, the durability of PV mounting systems becomes a critical issue.

[0004] Steel pipe piles are rarely used in these geological conditions due to their high cost and short durability. Concrete piles, on the other hand, are widely used in the foundation of photovoltaic systems due to their high strength, low cost, ease of construction, and short construction period. However, these medium-to-high corrosive geological conditions also easily corrode concrete piles, causing them to degrade and become brittle rapidly. The reinforcing steel in the concrete corrodes and deteriorates, leading to premature damage before the piles reach their service life. Severely damaged piles may lose their load-bearing capacity, seriously affecting the safety of the photovoltaic structure.

[0005] Therefore, how to provide a photovoltaic support pile foundation structure with good corrosion resistance in medium-to-high corrosive geological conditions is a technical problem that urgently needs to be solved in this field. Utility Model Content

[0006] To address the technical problems of existing photovoltaic support pile foundation structures being prone to corrosion and having poor durability, this utility model provides a photovoltaic support pile foundation structure that improves corrosion and alkali resistance, increases service life, reduces damage to the photovoltaic structure and property losses, and facilitates the construction of photovoltaic equipment, enabling rapid installation of the upper photovoltaic modules.

[0007] A photovoltaic support pile foundation structure includes a pile body and a connecting joint;

[0008] The connecting joint is fixed in the pile body, and the connecting part of the connecting joint extends out of the pile body from the top of the pile body;

[0009] The pile body outer surface is provided with an anticorrosive coating, and the outer side of the anticorrosive coating is further provided with a waterproof anticorrosive mortar layer.

[0010] Preferably, threads are arranged in the connecting parts.

[0011] Preferably, the photovoltaic support support is further arranged in threaded connection with the connecting parts, and the photovoltaic support support is used for connecting a photovoltaic support.

[0012] Preferably, a plurality of connecting parts are arranged on the pile body, and the connecting parts are spaced from each other.

[0013] Preferably, the connecting parts are arranged in central symmetry around the axis of the pile body.

[0014] Preferably, the anticorrosive coating is a permeable crystalline waterproof anticorrosive coating.

[0015] Preferably, the pile body is a concrete pile.

[0016] Preferably, the connecting joint is a galvanized steel pipe joint.

[0017] Preferably, a stainless steel wire mesh is arranged in the waterproof anticorrosive mortar layer.

[0018] Compared with the prior art, the photovoltaic support pile foundation structure comprises a pile body and a connecting joint; the connecting joint is fixed in the pile body, and a connecting part of the connecting joint extends out of the pile body from the top of the pile body; the outer surface of the pile body is provided with an anticorrosive coating, and the outer side of the anticorrosive coating is further provided with a waterproof anticorrosive mortar layer. The photovoltaic support pile foundation structure is provided with the anticorrosive coating on the outer surface of the pile body, and the outer side of the anticorrosive coating is further provided with the waterproof anticorrosive mortar layer, so that the pile body can be blocked from the soil through two protective structures, the pile body is double-protected, the pile head strength and the pile foundation anticorrosion alkali resistance are improved, the pile head wind sand and water flow erosion resistance is increased, the maintenance and repair frequency is reduced, the maintenance cost is reduced, and the problems of photovoltaic structure damage and property loss are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 A schematic view of a photovoltaic support pile foundation structure provided by an embodiment;

[0021] Figure 2 The connection site distribution diagram provided for an embodiment. DETAILED DESCRIPTION

[0022] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] It should be noted that when a component is referred to as being "fixed", "attached" or "disposed" on another component, it can be directly on the other component or indirectly on the other component; when a component is "connected" with another component, or a component is referred to as being "connected" to another component, it can be directly connected to the other component or indirectly connected to the other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" or "several" is two or more, unless otherwise explicitly and specifically limited.

[0026] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the description, to enable those skilled in the art to understand and read, and do not have technical significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0027] The utility model provides a kind of photovoltaic support pile foundation structure, it includes pile body and connecting joint;The connecting joint is fixed in the pile body, and the connecting part of the connecting joint extends out the pile body from the top of the pile body;The outer surface of the pile body is provided with anticorrosive coating, and the outer side of the anticorrosive coating is also provided with waterproof anticorrosive mortar layer.The photovoltaic support pile foundation structure is provided with the anticorrosive coating on the outer surface of the pile body, and the waterproof anticorrosive mortar layer is also provided on the outer side of the anticorrosive coating, the pile body can be blocked with soil by two protective structures, the pile body is doubly protected, the strength of pile head and the corrosion and alkali resistance of pile foundation can be improved, the wind sand and water flow erosion resistance of pile head is increased, maintenance frequency is reduced, maintenance cost is reduced, the problems of photovoltaic structure damage and property loss are reduced.

[0028] Please refer to Figure 1 And Figure 2 In one embodiment, a photovoltaic support pile foundation structure 100 is provided for mounting and supporting photovoltaic supports. The photovoltaic support pile foundation structure 100 is mainly applied in medium-high corrosion geology (such as saline-alkali land, desert ground) to solve the problem that the pile foundation structure in the prior art is easily corroded in such geology and has low durability.

[0029] The photovoltaic support pile foundation structure 100 includes a pile body 10 and a connecting joint 20. The pile body 10 is the part of the entire structure for embedding and fixing in soil 200. The pile body 10 includes a pile shaft and a pile head at the top of the pile shaft. After installation, the pile shaft is located in the soil 200 as a fixed end, which can provide support for the photovoltaic supports installed on the photovoltaic support pile foundation structure 100, resist the horizontal force, vertical pressure and uplift force transmitted from the upper photovoltaic supports, and this part is the most severely corroded part. The pile head is mainly used to transmit the load of the upper structure to the soil 200 and transmit the force to the deeper stratum through the pile shaft. After installation, the pile head is exposed to the atmospheric environment and is relatively less corroded. The connecting joint 20 is fixed in the pile body 10, and the connecting part 21 of the connecting joint 20 extends out of the pile body 10 from the top of the pile body 10. That is, a part of the connecting joint 20 is located outside the pile body 10, and this part is the connecting part 21, which is the part of the entire structure for connecting with the photovoltaic supports or other connecting structures.

[0030] The outer surface of the pile body 10 is provided with an anticorrosive coating 30, and the outer side of the anticorrosive coating 30 is also provided with a waterproof anticorrosive mortar layer 40. That is, two protective layer structures are provided on the outer side of the pile body 10.

[0031] It can be understood that the saline-alkali environment is mainly composed of soil containing salt and alkali substances, and these substances will have an indelible impact on the pile foundation. For example, salt and alkali substances in the soil can cause corrosion, thereby damaging the internal structure of the pile foundation and shortening its service life. In addition, salt and alkali substances can cause the expansion and shrinkage of the soil, thereby bringing additional load to the pile foundation and aggravating the fatigue failure of the pile foundation.

[0032] In the photovoltaic support pile foundation structure 100 provided by the embodiment, the anticorrosive coating 30 is arranged on the outer surface of the pile body 10, and the waterproof anticorrosive mortar layer 40 is further arranged outside the anticorrosive coating 30. The pile body 10 can be blocked from the soil 200 through the two-layer protection structure, thereby achieving double protection for the pile body 10, improving the pile head strength and the corrosion and alkali resistance of the pile foundation, increasing the wind sand and water flow erosion resistance of the pile head, reducing the maintenance frequency, reducing the maintenance cost, and reducing the problems of damage to the photovoltaic structure and property loss.

[0033] In an embodiment, the anticorrosive coating 30 can be coated only on part of the area of the pile body 10, for example, the anticorrosive coating 30 is coated only on the outer side of the pile body, and the anticorrosive coating 30 is not coated on the pile head, thereby saving cost. Of course, in other embodiments, the anticorrosive coating 30 can be coated on all areas of the outer surface of the pile body 10, that is, the anticorrosive coating 30 is coated on the pile head. It can be understood that the pile head is exposed to the atmospheric environment, and the corrosion degree is relatively small. However, the pile head will still be eroded by external rainwater and wind sand, and the anticorrosive coating 30 can further improve the corrosion resistance of the photovoltaic support pile foundation structure 100 by being coated on the pile head.

[0034] The anticorrosive coating 30 and the waterproof anticorrosive mortar layer 40 are made of materials known in the prior art.

[0035] Preferably, in an embodiment, the connecting part 21 is provided with a thread. That is, in this embodiment, the connecting part 21 is connected to other structures through a threaded structure. By using a threaded connection, the installation difficulty of other structures can be reduced, and good connection and fixing effect can be achieved after installation.

[0036] Preferably, in an embodiment, the photovoltaic support pile foundation structure 100 further comprises a photovoltaic support bracket 50 threadedly connected with the connecting part 21, and the photovoltaic support bracket 50 is used for connecting a photovoltaic support. That is, in this embodiment, the connecting joint 20 is further provided with the photovoltaic support bracket 50, and the installation of the photovoltaic support is realized through the photovoltaic support bracket 50. It can be understood that different installation interfaces can be arranged on the photovoltaic support bracket 50 according to requirements, so that the photovoltaic support bracket 50 can be adapted to the installation of photovoltaic supports of different interface types, thereby improving the compatibility of the photovoltaic support pile foundation structure 100. Specifically, in an embodiment, the outer surface of the connecting part 21 is provided with external threads, and the photovoltaic support bracket 50 is provided with matching internal threads, so as to realize the threaded connection between the connecting part 21 and the photovoltaic support bracket 50.

[0037] Preferably, in an embodiment, the connecting part 21 extending out of the pile body 10 is provided with a plurality of (at least two) connecting parts 21, and the connecting parts 21 are spaced apart from each other. By arranging a plurality of connecting parts 21 spaced apart from each other, when connected with other structures, the connection can be made through multiple points, so as to further improve the firmness of the connection and make the stress points more, thereby avoiding damage to the connecting joint 20 after long-term use.

[0038] Preferably, in an embodiment, each connecting part 21 is centrally symmetrically distributed about the axis of the pile body 10, so that after being connected with other structures, the stress of each point is more balanced.

[0039] Preferably, in an embodiment, the anticorrosive coating 30 is a permeable crystalline waterproof anticorrosive coating. That is, the anticorrosive coating 30 is coated with a permeable crystalline waterproof coating, thereby forming a coating with waterproof and anticorrosive functions.

[0040] Preferably, in an embodiment, the pile body 10 is a concrete pile. Compared with other pile structures such as steel pipe piles, the use of a concrete pile for the pile body 10 has the advantages of high strength, low cost, convenient construction, short construction period, and good anticorrosive ability in combination with the anticorrosive coating 30 and the waterproof anticorrosive mortar layer 40. Specifically, in an embodiment, the pile body 10 is a prefabricated concrete pile.

[0041] Preferably, in an embodiment, the connecting joint 20 is a galvanized steel pipe joint, so as to further improve the strength and corrosion resistance.

[0042] Preferably, in an embodiment, a stainless steel wire mesh 60 is arranged in the waterproof and anticorrosive mortar layer 40. The arrangement of the stainless steel wire mesh 60 can effectively prevent the mortar from cracking, thereby further ensuring the protection effect.

[0043] When the photovoltaic support pile foundation structure 100 is installed, a spiral drill is used to drill a hole, the underground soil is drilled out of the ground, a hole with a diameter of 25-30 mm larger than that of the pile body 10 is formed, and then the waterproof and anticorrosive mortar is injected into the hole through the hollow spiral drill rod that is not pulled out. At the same time, the hollow spiral drill rod is slowly pulled out, so that the waterproof and anticorrosive mortar can fill the hole space left by the pulled-out hollow spiral drill rod, thereby effectively preventing hole collapse. After the drill rod is pulled out, the pile body 10 coated with the anticorrosive coating 30 and sleeved with the stainless steel wire mesh 60 is inserted into the hole filled with the waterproof and anticorrosive mortar. Due to the lubrication of the mortar, the anticorrosive coating 30 on the surface of the pile body 10 can be effectively protected, and the coating is prevented from being damaged by friction. The stainless steel wire mesh 60 sleeved with the waterproof and anticorrosive mortar can effectively prevent the mortar from cracking. At the same time, when the pile body 10 is installed in place, the pile bearing capacity is formed, and the construction of the upper photovoltaic support can be carried out. With the increase of time, the mortar solidification and hydration reaction form a waterproof and anticorrosive mortar layer 40 outside the anticorrosive coating 30, and the bearing capacity of the pile continues to increase, which is further embedded in the soil layer and provides the upper photovoltaic support with foundation bearing capacity and stability. The prefabricated pile formed by the above steps has two waterproof and anticorrosive layers, namely the waterproof and anticorrosive mortar layer 40 and the stainless steel wire mesh 60 and the anticorrosive coating 30, which provide double protection for the pile body 10.

[0044] The photovoltaic support pile foundation structure 100 can improve the anticorrosion and alkali resistance of the prefabricated concrete pile, prolong the service life of the prefabricated concrete pile, and expand the application range of the prefabricated concrete pile, so that the prefabricated concrete pile can be applied to medium-high corrosion geological saline-alkali geological conditions and special geological conditions.

[0045] The above only describes the embodiments of the present application, and it should be pointed out that, for those skilled in the art, improvements can be made without departing from the inventive concept, but these all belong to the protection scope of the present application.

Claims

1. A photovoltaic support pile foundation structure, characterized by, The pile body and the connecting joint are provided. The connecting joint is fixed in the pile body, and the connecting part of the connecting joint extends from the top of the pile body out of the pile body. The outer surface of the pile body is provided with a corrosion-resistant coating, and the outer side of the corrosion-resistant coating is further provided with a waterproof and corrosion-resistant mortar layer.

2. The photovoltaic stanchion pile foundation structure of claim 1, wherein, The connecting part is provided with a thread.

3. The photovoltaic stanchion pile foundation structure of claim 2, wherein, A photovoltaic support support is further provided and is threadedly connected with the connecting part, and the photovoltaic support support is used for connecting a photovoltaic support.

4. The photovoltaic stanchion pile foundation structure of claim 2, wherein, The connecting part extending out of the pile body is provided with a plurality of connecting parts, and the connecting parts are spaced from each other.

5. The photovoltaic stanchion pile foundation structure of claim 4, wherein, The connecting parts are centrally symmetrically distributed with the axis of the pile body as the center.

6. The photovoltaic stanchion pile foundation structure of claim 1, wherein, The corrosion-resistant coating is a permeable crystalline waterproof and corrosion-resistant coating.

7. The photovoltaic stanchion pile foundation structure of claim 1, wherein, The pile body is a concrete pile.

8. The photovoltaic stanchion pile foundation structure of claim 1, wherein, The connecting joint is a galvanized steel pipe joint.

9. The photovoltaic stanchion pile foundation structure of claim 1, wherein, The waterproof and corrosion-resistant mortar layer is provided with a stainless steel wire mesh.

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