CN216599476U

CN216599476U - Corrosion-resistant photovoltaic support

Info

Publication number: CN216599476U
Application number: CN202123365694.3U
Authority: CN
Inventors: 周敏; 刘学红; 向斌; 战兴晓
Original assignee: Anhui Doctor Tao Environmental Protection Technology Co ltd
Current assignee: Anhui Doctor Tao Environmental Protection Technology Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-05-24
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to a corrosion-resistant photovoltaic support, including a set of support unit (A), every support unit (A) includes a set of landing leg (1) to and sloping (2) of being connected with landing leg (1), connect a set of U shaped steel photovoltaic frame (4) that are used for fixed photovoltaic board (3) on sloping (2), connect gradually zinc-plated layer (5), inorganic zinc-rich anticorrosive coating (6) of waterborne graphite alkene, epoxy micaceous iron intermediate level (7) and polyurethane anticorrosive coating (8) on the surface of landing leg (1), sloping (2) and U shaped steel photovoltaic frame (4); the lower parts of the supporting legs (1) are connected into a concrete protection pier (9). The utility model is suitable for a coastal area can improve the corrosion resisting ability of photovoltaic support.

Description

Corrosion-resistant photovoltaic support

Technical Field

The utility model relates to a photovoltaic support technical field, concretely relates to corrosion-resistant photovoltaic support.

Background

With the proposal of the national low-carbon and double-carbon economic development concept, the photovoltaic power generation as a clean energy source is rapidly a new energy industry plate which rises up rapidly in coastal economically developed areas. However, with the increase of the operation life of coastal photovoltaic power stations in China, investigation finds that the galvanized structural member support component commonly used for photovoltaic power stations is seriously corroded after the construction and operation of the photovoltaic power stations reach 3 years, and a large amount of rust points and zinc salts exist on the surface of the galvanized structural member, so that great manpower and economic consumption is caused for later-stage power station operation and maintenance, and the galvanized structural member becomes a great hidden danger for the safe operation and maintenance of the power stations.

Taking a certain photovoltaic power station located in the Xuwen area of the Zhanjiang province in Guangdong as an example, the photovoltaic supports of the power station all adopt galvanized structural members which are connected with each other in a welding mode, a fastening mode and the like, the galvanized structural members are in a marine atmospheric environment with strong corrosivity for a long time and are mostly built on mudflats, fish ponds and salt ponds, and the galvanized structural member supports of the photovoltaic power station are in various corrosive environmental forms, such as an atmospheric corrosion area, a sea wave splashing corrosion area, a tidal range area, a full immersion area and a sea mud area. According to the long-term corrosion monitoring result of the power station, the splash zone and the tidal range zone become zones with the most serious corrosion due to the influence of factors such as wave impact, ultraviolet rays, seawater salt, oxygen, temperature difference, adhesion of floating organisms on the sea surface and the like, and the dry-wet combination part of most of the buried grounding galvanized parts is seriously corroded; in addition, the connecting part of the structural member fastener is easy to damage the anticorrosive coating due to installation or vibration, and the corrosion phenomenon can also occur; the pretreatment for corrosion prevention of part of on-site welding areas is not thorough, so that the corrosion resistance of the anticorrosive coating is poor. The above parts all have potential safety hazards caused by corrosion. Therefore, how to improve the corrosion resistance of the photovoltaic bracket becomes an urgent problem to be solved.

SUMMERY OF THE UTILITY MODEL

In order to solve the current problem, the utility model provides a corrosion-resistant photovoltaic support is applicable to the coastal area, can improve its corrosion resisting ability.

The utility model adopts the following technical scheme:

the utility model provides a corrosion-resistant photovoltaic support, includes a set of support unit, and every support unit includes a set of landing leg to and the sloping of being connected with the landing leg, connect a set of U shaped steel photovoltaic frame that is used for fixed photovoltaic board on the sloping, its characterized in that:

the surfaces of the supporting legs, the oblique beams and the U-shaped steel photovoltaic frame are sequentially connected with a zinc coating, a water-based graphene inorganic zinc-rich anticorrosive coating, an epoxy micaceous iron intermediate layer and a polyurethane anticorrosive coating; the lower parts of the supporting legs are connected into a concrete protection pier.

Furthermore, the U-shaped steel photovoltaic frame is fixedly connected with the oblique beam through a stainless steel bolt nut assembly, and polytetrafluoroethylene gaskets are respectively arranged on the stainless steel bolt nut assembly and the corresponding matching surface.

Further, the thickness of the concrete protective pier layer is more than 5 cm.

Furthermore, the supporting legs are rectangular pipes, and concrete with the same height as the concrete protection piers is poured into the rectangular pipes.

Furthermore, a group of studs are arranged in the concrete protection pier and are fixedly connected with the supporting legs.

Further, support rods are connected between the support units.

The water-based graphene inorganic zinc-rich anticorrosive coating is the prior art.

The utility model discloses the beneficial effect of utensil:

1. the surface of the photovoltaic support is sequentially connected with the zinc coating, the water-based graphene inorganic zinc-rich anticorrosive layer, the epoxy micaceous iron intermediate layer and the polyurethane anticorrosive layer, so that the corrosion resistance of the photovoltaic support is improved, and the photovoltaic support is particularly suitable for coastal areas with serious corrosion;

2. the concrete protection piers are arranged on the supporting legs, so that the corrosion resistance of the supporting legs can be improved, the impact of seawater and sea surface floaters can be relieved, and the connection strength of the concrete protection piers and the supporting legs can be improved through the arranged studs;

3. the polytetrafluoroethylene gasket is arranged to prevent the corrosion-resistant layer of the connecting part from being damaged when the bolt is installed;

4. the strength and the rigidity of the whole photovoltaic support are enhanced through the supporting rods, the wind resistance is improved, the relative sliding of the hinged points of the bolts is reduced, and the integrity of the protective layer is protected.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure in the direction F in FIG. 1;

FIG. 3 is an enlarged view of a portion of FIG. 1 at I;

FIG. 4 is a schematic view of an installation structure of the U-shaped steel photovoltaic frame and the oblique beam.

Description of reference numerals: 1. a support leg; 2. an oblique beam; 3. a photovoltaic panel; 4. a U-shaped steel photovoltaic frame; 5. a zinc coating layer; 6. an aqueous graphene inorganic zinc-rich anticorrosive layer; 7. an epoxy micaceous iron intermediate layer; 8. a polyurethane corrosion resistant layer; 9. a concrete protective pier; 10. a polytetrafluoroethylene gasket; 11. a base plate; 12. a support bar; 13. a stud; 14. and (5) foundation.

Detailed Description

In order to make the present invention more clearly understood, the following description is further made in conjunction with the accompanying drawings, and the embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.

As shown in fig. 1 and 2, the corrosion-resistant photovoltaic support comprises a group of support units A, each support unit A comprises 2 vertically arranged support legs 1 and an oblique beam 2 connected with the support legs 1, the support legs 1 are made of rectangular pipes, and a bottom plate 11 used for being connected with a foundation 14 is arranged at the bottom end of each support unit A. The oblique beam 2 is made of channel steel. A group of U-shaped steel photovoltaic frames 4 vertical to the oblique beam 2 are connected to the oblique beam, and the U-shaped steel photovoltaic frames 4 are distributed at equal intervals and used for fixing and supporting the photovoltaic panels 3.

As shown in fig. 3, a zinc coating 5, a water-based graphene inorganic zinc-rich anticorrosive coating 6, an epoxy micaceous iron intermediate layer 7 and a polyurethane anticorrosive coating 8 are sequentially connected from inside to outside on the surfaces of the support leg 1, the oblique beam 2 and the U-shaped steel photovoltaic frame 4. The thickness of the zinc coating 5 is 90-100 mu m, the dry film thickness of the water-based graphene inorganic zinc-rich anticorrosive coating 6 is 70-90 mu m, the dry film thickness of the epoxy micaceous iron intermediate layer 7 is 90-100 mu m, the dry film thickness of the polyurethane anticorrosive coating 8 is 80-100 mu m, the protective layers are coated, sprayed or brushed in a manufacturing factory, the photovoltaic bracket is allowed to be shipped after the paint film is completely dried, and protective measures are taken to prevent the protective layer from being damaged by scraping, scratching and the like. The coating adopted by the aqueous graphene inorganic zinc-rich anticorrosive layer 6 is the prior art, for example, the aqueous graphene inorganic zinc-rich anticorrosive coating with the model of TBST-WF-01, which is produced by Anhui ceramic doctor environmental protection science and technology limited, has the effects of resisting humid atmosphere, seawater and salt mist corrosion, is anticorrosive for a long time, has strong adhesive force, and can form a compact interface transition layer; the epoxy micaceous iron intermediate layer 7 can adopt epoxy micaceous iron intermediate paint which is produced by Anhui ceramic doctor environmental protection science and technology limited and has the model of TBST-HY-01, has excellent impermeability and delays the infiltration of corrosive media; the polyurethane anticorrosive layer 8 can adopt a water-based polyurethane finish paint with the model of TBST-M4, which is produced by Anhui ceramic doctor environmental protection science and technology limited company and has excellent barrier property, aging resistance and color retention. The integral composite protective layer plays a role together, so that the integral corrosion resistance of the original zinc coating is improved, the corrosion-resistant service life of the photovoltaic support is prolonged, and the attractiveness and the weather resistance of the photovoltaic support are improved.

As shown in fig. 1 and 2, a group of studs 13 are welded on the periphery of the lower part of the leg 1, the welding area of the studs 13 is not provided with the above-mentioned various protective layers to prevent the quality of the welding part from being not satisfactory, and the outer surface of the studs 13 is an exposed metal surface to enhance the combination with concrete. The lower parts of the supporting legs 1 and the studs 13 are arranged in the concrete protection piers 9, the layer thickness of the concrete protection piers 9 is more than 5cm, and when the photovoltaic support is used, the height of the supporting legs 1 is higher than the highest sea surface of a use area. The concrete protection pier 9 can be formed by adopting a formwork filling mode, the lower rectangular pipe of the supporting leg 1 and the bottom plate 11 are completely wrapped, and concrete with the same height as the concrete protection pier 9 can be filled into the inner cavity of the rectangular pipe to prevent the inside of the rectangular pipe from being corroded. During construction, the compactness of concrete needs to be ensured, follow-up concrete curing is paid attention to, and the defects that larger cracks, penetrating cracks and the like influence the anti-seepage and water-resisting performance are prevented. Through setting up concrete protection mound 9 both can improve the corrosion resisting ability of landing leg body, also can slow down the impact of sea water and sea floater to the landing leg, prolong its life.

As shown in FIG. 4, U shaped steel photovoltaic frame 4's structure is prior art, and the cross-section presents the U type, and the top opening part is connected with photovoltaic board 3 through the special joint spare of photovoltaic board, and the special joint spare of photovoltaic board also is prior art. The bottom of the U-shaped steel photovoltaic frame 4 is provided with a group of waist holes for bolts or screws to penetrate. The bottom of the U-shaped steel photovoltaic frame 4 is fixedly connected with the oblique beam 2 by penetrating through a stainless steel bolt nut assembly, a polytetrafluoroethylene gasket 10 is arranged between the lower end face of a stainless steel bolt head and the bottom of the U-shaped steel photovoltaic frame 4, and the polytetrafluoroethylene gasket 10 is also arranged between the upper end face of a stainless steel nut and the matching surface of the oblique beam 2. Wherein, the polytetrafluoroethylene gasket 10 positioned at the upper side is annular, the inner hole of the gasket is slightly larger than the diameter of the stainless steel bolt, and the upper surface and the lower surface of the gasket are parallel to each other; the polytetrafluoroethylene gasket 10 on the lower side is an inclined gasket and is used for being matched and connected with the inclined beam 2 (made of channel steel). The polytetrafluoroethylene gasket 10 is made of non-metallic materials, has the excellent characteristics of high and low temperature resistance (-192-260 ℃), corrosion resistance (strong acid, strong alkali, aqua regia and the like), weather resistance, high insulation and the like, can prevent the protective layer from being scratched to generate corrosion when stainless steel bolts and nuts are installed, and is more suitable for being used in coastal areas.

In order to increase the strength and rigidity of the photovoltaic rack, support rods 12 are connected between the rack units a. The support rod 12 can be made of section steel or a steel pipe provided with a zinc coating 5, a water-based graphene inorganic zinc-rich anticorrosive coating 6, an epoxy micaceous iron intermediate layer 7 and a polyurethane anticorrosive coating 8.

The utility model discloses use the area on the coastal, can resist strong convection weather such as typhoon, reduce the relative slip production of each bolt pin joint and draw and wipe, be favorable to protecting the complete of inoxidizing coating, and then improve photovoltaic support's anticorrosive ability.

The above embodiments are preferred embodiments of the present invention, and the technical idea and the implementation point of the present invention are not limited, and any simple modification and equivalent structure transformation or modification according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a corrosion-resistant photovoltaic support, includes a set of support unit (A), and every support unit (A) includes a set of landing leg (1) to and sloping (2) be connected with landing leg (1), connect a set of U shaped steel photovoltaic frame (4) that are used for fixed photovoltaic board (3) on sloping (2), its characterized in that:

the surface of the supporting leg (1), the inclined beam (2) and the U-shaped steel photovoltaic frame (4) is sequentially connected with a zinc coating (5), a water-based graphene inorganic zinc-rich anticorrosive coating (6), an epoxy micaceous iron intermediate layer (7) and a polyurethane anticorrosive coating (8); the lower parts of the supporting legs (1) are connected in a concrete protection pier (9).

2. A corrosion resistant photovoltaic support according to claim 1, wherein: the U-shaped steel photovoltaic frame (4) is fixedly connected with the oblique beam (2) through a stainless steel bolt nut component, and polytetrafluoroethylene gaskets (10) are respectively arranged on the stainless steel bolt nut component and the corresponding matching surface.

3. A corrosion resistant photovoltaic support according to claim 2, wherein: the thickness of the concrete protection pier (9) layer is more than 5 cm.

4. A corrosion resistant photovoltaic support according to claim 3, wherein: the supporting legs (1) are rectangular pipes, and concrete with the same height as the concrete protective piers (9) is poured into the rectangular pipes.

5. The corrosion-resistant photovoltaic support of claim 4, wherein: a group of studs (13) are arranged in the concrete protection pier (9), and the studs (13) are fixedly connected with the supporting legs (1).

6. A corrosion resistant photovoltaic support according to claim 1 or 5, wherein: the support rods (12) are connected between the support units (A).