Floating body connecting profile, connecting module and water surface photovoltaic power station

Abstract

The utility model discloses a floating body connecting section bar, a connecting module and a water surface photovoltaic power station, the floating body connecting section bar comprises an inner shell layer and an outer shell layer which are nested and matched, the inner shell layer is located at the inner side and is closed to form a hollow cavity, and a composite layer is filled between the inner shell layer and the outer shell layer. The composite layer is resin which is filled with basalt fibers and is solidified into an integrated structure, and the inner shell layer, the outer shell layer and the composite layer are molded into an integrated structure through a pultrusion process. The three-layer nested structure of the inner shell layer, the outer shell layer and the composite layer is combined to form a sectional material structure so as to meet the rigidity requirement for connecting adjacent floating body modules, meanwhile, the composite layer serves as a main bearing structure, resin filled with basalt fibers is adopted for curing so as to avoid the corrosion risk caused by long-time use in the environment with large moisture, and the service life of the composite layer is prolonged. In addition, the three-layer structure of the profile is produced through the pultrusion process, good consistency of all positions of the profile can be guaranteed, and the production efficiency and the uniformity of the strength of the profile are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of floating photovoltaic power stations, and particularly relates to a floating body connecting profile, a connecting module and a floating photovoltaic power station. Background Art

[0002] Floating photovoltaic power stations are widely used in various scenarios such as drinking water reservoirs, hydropower station reservoirs, offshore waters and cold regions due to their safety, reliability and environmental protection characteristics. The current bearing foundation of floating photovoltaic power stations is usually composed of a floating matrix composed of multiple floating bodies to stably carry photovoltaic modules, cables, brackets, busbar boxes and their related equipment. For the matrix composed of floating bodies, usually the floating bodies are pre-assembled into multiple modules, and adjacent modules are fixedly connected by metal rods to form a stable matrix structure. However, since the floating body is in direct contact with the water surface, the profile used to connect adjacent floating body modules is extremely close to the water surface and is extremely easy to contact the water surface, and corrosion and rust will occur after long-term use. Considering the long-term fluctuating working conditions of the water surface environment, there is a great risk of deformation and even corrosion and fracture of the metal rods, resulting in the failure of components such as photovoltaic panels to fall into the water, causing greater economic losses.

[0003] Therefore, how to improve the stability and service life of the floating body matrix and then maintain the safe and stable operation of the floating photovoltaic power station is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a floating body connecting profile, a connecting module and a floating photovoltaic power station to improve the stability and service life of the floating body matrix and maintain the safe and stable operation of the floating photovoltaic power station.

[0005] In the first aspect, the utility model provides a floating body connecting profile, which includes an inner shell layer and an outer shell layer that are nested and fitted. The inner shell layer is located inside and encloses to form a hollow cavity. A composite layer is filled between the inner shell layer and the outer shell layer. The composite layer is a resin filled with basalt fibers and cured into an integral structure, and the inner shell layer, the outer shell layer and the composite layer are formed into an integral structure by pultrusion process.

[0006] Preferably, in the above floating body connecting profile, the inner shell layer and the outer shell layer are made of the same material, and are both felt layer structures filled with basalt fibers.

[0007] Preferably, in the above floating body connecting profile, the mass density of the inner shell layer is 300g / m 2 -600g / m 2 .

[0008] Preferably, in the above floating body connecting profile, the composite layer is further filled with an ultraviolet inhibitor and a binder, and the resin is one or more of vinyl resin, epoxy resin, and unsaturated resin.

[0009] Preferably, in the above floating body connecting profile, the thickness of the inner shell layer and the outer shell layer is 0.1 mm - 1.0 mm.

[0010] Preferably, in the above floating body connecting profile, the thickness of the composite layer is 1.0 mm - 6.0 mm.

[0011] In a second aspect, the present invention provides a connection module, including legs and the connecting profile according to any one of the above embodiments. A plurality of the legs are spaced apart on the installation wall surface of the connecting profile, and the legs are fixed to the connecting profile by means of bolt connection.

[0012] Preferably, in the above connection module, connection protrusions are provided on the installation wall surface, and corresponding recessed portions for snap-fitting with the connection protrusions are provided on the legs. Mounting holes are provided on the side walls of the recessed portions and the connection protrusions, and the bolt connection passes through the recessed portions and the connection protrusions.

[0013] Preferably, in the above connection module, the connection protrusions are of an isosceles trapezoid structure and shrink towards the installation wall surface, and the recessed portions are also of a trapezoidal cross-section and slide into the installation position along the end of the connecting profile.

[0014] In a third aspect, the present invention provides a floating photovoltaic power station, including modules composed of a plurality of floating bodies, and adjacent floating body modules are fixedly connected into an integral structure using the connection module according to any one of the above embodiments.

[0015] As can be seen from the above technical solutions, the floating body connecting profile provided by the present invention is combined into a profile structure through a three-layer nested structural layer. The composite layer for mainly bearing force is a resin filled with basalt fibers inside. It is well protected by the inner shell layer and the outer shell layer on both the inside and outside, and the mechanical properties of the profile, including strength, stiffness, and durability, are enhanced through the filling and curing of basalt fibers, enabling it to withstand large working loads and harsh environmental conditions. At the same time, the composite layer will not rust like the metal profiles in the prior art under the use conditions of a long-term humid environment, resulting in problems such as connection deformation or even failure and fracture, and can achieve stable connection of the floating body array and reduce the water loss of components such as photovoltaic panels. In addition, the profile with a three-layer structure using the pultrusion process can also ensure the consistency and quality of the product, avoid the problem of relatively weak local bearing capacity, and reduce the rejection rate during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 Schematic cross-sectional structure diagram of the floating body connection profile provided by the embodiment of the present invention;

[0018] Figure 2 Schematic diagram of the connection module connecting two floating body modules provided by the embodiment of the present invention;

[0019] Figure 3 Assembly schematic diagram of the connection module provided by an embodiment of the present invention;

[0020] Figure 4 Assembly schematic diagram of the connection module provided by another embodiment of the present invention.

[0021] Among them, 10 - inner shell layer; 20 - outer shell layer; 30 - composite layer; 40 - floating body connection profile; 410 - installation wall surface; 420 - connection protrusion; 50 - leg; 510 - recess; 60 - floating body module. Specific embodiments

[0022] The core of the present invention is to provide a floating body connection profile, a connection module and a floating solar power station, so as to improve the stability and service life of the floating body phalanx and maintain the safe and stable operation of the floating solar power station.

[0023] In order to enable those skilled in the art to better understand the solution of the present invention, the embodiments of the present invention will be described below with reference to the drawings. In addition, the embodiments shown below do not limit the content of the invention described in the claims in any way. Furthermore, all the contents shown in the following embodiments are not limited to what is necessary for the solution of the invention described in the claims.

[0024] As Figure 1 and Figure 2 shown, the floating body connection profile provided by the embodiment of the present invention is mainly used for connecting the floating body module 60 of the floating solar power station. The profile is designed with a nested inner shell layer 10 and outer shell layer 20, where the inner shell layer 10 is located on the inner side, and the inner shell layer 10 encloses to form a closed hollow cavity. Specifically, the nested inner shell layer 10 and outer shell layer 20 are nested at equal distances to fill a composite layer 30 with a uniform thickness between the inner shell layer 10 and the outer shell layer 20.

[0025] The composite layer 30 is specifically a resin filled with basalt fibers. After the resin is melted, it is cured with the basalt fibers into an integral structure. Basalt fibers are a kind of high-performance reinforcing material, with high strength, high modulus and good chemical corrosion resistance. The setting of the composite layer 30 enables the floating body connecting profile to have sufficient stiffness to connect the floating body modules 60. At the same time, the floating body connecting profile will not rust when contacting with the water surface or operating in a humid environment for a long time, thus maintaining its service life.

[0026] In the above structure, the profiles with three-layer structure from the inside to the outside are formed by pultrusion process. The pultrusion process is a continuous production process with a high degree of automation, which can quickly produce profiles with a longer length and can be cut into the required length according to needs, suitable for large-scale production; it can also ensure the consistency and repeatability of the profiles. The pultrusion process also allows precise control of the cross-sectional shape and size of the profiles, so as to meet specific design requirements.

[0027] In order to further improve the corrosion resistance and durability of the floating body connecting profile provided by the embodiment of the present invention, a layer of anti-corrosion material, such as an epoxy resin coating, can also be coated on the surfaces of the inner shell layer 10 and the outer shell layer 20. This kind of coating can protect the profiles from the erosion of water and chemical substances and extend their service life. At the same time, under the working conditions with a large demand for connection strength, some reinforcing ribs can also be designed between the inner shell layer 10 and the outer shell layer 20, or inside the hollow cavity of the inner shell layer 10. They are longitudinal or transverse to improve the bending strength and torsional resistance of the profiles. These reinforcing ribs can be protruding ribs or embedded fiber bundles, which are closely combined with the resin matrix of the composite layer 30 to jointly bear external forces.

[0028] The floating body connecting profile provided by the embodiment of the present invention is combined into a profile structure through a three-layer nested structural layer. The composite layer 30 for mainly bearing force is a resin filled with basalt fibers inside. It is well protected by the inner shell layer 10 and the outer shell layer 20 on both the inside and the outside, and the mechanical properties of the profile, including strength, stiffness and durability, are enhanced through the filling and curing of basalt fibers, enabling it to withstand large working loads and harsh environmental conditions. At the same time, the composite layer 30 will not rust like the metal profiles in the prior art under the use conditions of a long-term humid environment, resulting in problems such as connection deformation or even failure and fracture, and can stably connect the floating body phalanx and reduce the water loss of components such as photovoltaic panels. In addition, the profiles with a three-layer structure adopted the pultrusion process can also ensure the consistency and quality of the products, avoid the problem of relatively weak local bearing capacity, and reduce the scrap rate in the production process.

[0029] To further optimize the above technical solution, in some embodiments of the present utility model, the inner shell layer 10 and the outer shell layer 20 of the floating body connecting profile are made of the same material, which simplifies the production process and ensures the consistency of the materials, thereby making the bearing capacity of each area of the profile more uniform. At the same time, both the inner shell layer 10 and the outer shell layer 20 are felt layer structures filled with basalt fibers. On the one hand, the felt layer structure has a certain elasticity, which can achieve the effects of shock absorption and protection. On the other hand, the felt layer has good adhesion performance and is not easy to loosen, and can achieve a stable protection effect on the intermediate composite layer 30. On this basis, filling with basalt fibers can improve the tensile strength and compressive strength of the profile, and ensure the long-term stability of the floating body connecting profile in salt spray, seawater and other chemical substances through the chemical corrosion resistance of basalt fibers. In addition, the low density characteristic of basalt fibers helps to reduce the overall weight of the profile, reduce the load-bearing pressure of the floating body, and can provide more design margins for the setting of other components.

[0030] Based on the above embodiments, the mass density of the inner shell layer 10 is controlled within the range of 300 g / m² to 600 g / m². The selection of this density range is set based on the structural strength and weight requirements of the inner shell layer 10. Too low mass density may lead to insufficient stability of the inner shell layer 10 or even the profile, while too high density will increase the material cost and weight, affecting the economy and transportation convenience of the profile. It should be noted that the mass density of the inner shell layer 10 is in a proportional relationship with its structural strength. For the mass density range of the inner shell layer 10, it can be produced according to different scenarios with different bearing capacity requirements. For water surface environments with relatively harsh conditions, such as waters with large waves, the stability of the profile can be improved by increasing the mass density.

[0031] In addition, it should be noted that in a single profile, the mass density of the outer shell layer 20 is set to the same as that of the inner shell layer 10, which will not be elaborated here. To further improve the performance of the profile, a multi-layer structure design can also be adopted for the inner shell layer 10. For example, an additional reinforcement layer or buffer layer can be added to the inner shell layer 10 to improve its impact resistance and durability.

[0032] To further optimize the above technical solution, in some embodiments of the present utility model, the composite layer 30 is not only filled with basalt fibers, but also added with an anti-ultraviolet agent and a binder. The anti-ultraviolet agent can absorb ultraviolet rays, reduce the photo-degradation of the resin material, and at the same time extend the service life of the profile; while the binder can improve the curing effect of the composite layer 30 and enhance the integrity of its integral structure. At the same time, it should be noted that in addition to the anti-ultraviolet agent, other types of additives, such as flame retardants, antibacterial agents or antistatic agents, can also be considered to be added to the composite layer 30 to meet the requirements of specific application scenarios.

[0033] Based on the above structure, the resin for the matrix of the composite layer 30 is one or more of vinyl resin, epoxy resin, and unsaturated resin; resin materials such as vinyl resin, epoxy resin, and unsaturated resin all have good corrosion resistance, which enables the floating body connecting profile to be used in salt spray, seawater, and other chemical substances for a long time without damage.

[0034] Furthermore, in the floating body connecting profile provided by the embodiment of the present utility model, the thickness of the inner shell layer 10 and the outer shell layer 20 is 0.1 mm - 1.0 mm to have the effect of protecting the internal composite layer 30; while the thickness of the composite layer 30 is 1.0 mm - 6.0 mm to meet the strength and stiffness requirements of the profile. Preferably, after the inner shell layer 10, the outer shell layer 20, and the composite layer 30 become an integral structure, the thickness of the profile is 3 mm to have sufficient stiffness. Usually, for a basalt composite filling profile with a thickness of 3 mm, its bolt punching tensile force is greater than 10 KN, the mechanical retention after 300 kwh of ultraviolet aging is greater than 80%, the fatigue times are greater than 100,000 times without cracking, and the deflection under a 150 kg load is less than 30 mm, which can meet the connection requirements of the floating body module 60.

[0035] As Figure 2 and Figure 3 shown, the embodiment of the present utility model also provides a connection module, which includes legs 50 and the floating body connecting profile 40 provided in any of the above embodiments. Among them, the floating body connecting profile 40 is used to connect adjacent floating body modules 60, and the legs 50 are fixedly arranged on one side mounting wall surface 410 of the floating body connecting profile 40 to extend relative to the floating body connecting profile 40. The legs 50 are used for connecting and arranging other components on the photovoltaic panel, such as connecting pieces, cable stays, etc. for limiting or fixing structures. Therefore, in order to meet the use requirements, it is preferred that several legs 50 are arranged at intervals on the mounting wall surface 410.

[0036] It should be noted at the same time that different from the welding connection method in the prior art, the legs 50 and the non-metallic floating body connecting profile 40 are fixedly connected into an integral structure by bolts.

[0037] On the basis of the above embodiments, in order to improve the assembly convenience of the outrigger 50 and the floating body connecting profile 40 and enhance their assembly effect, a connecting protrusion 420 is further provided on the mounting wall surface 410 of the floating body connecting profile 40, and a recess 510 that is engaged with the connecting protrusion 420 is correspondingly provided on the outrigger 50. The outrigger 50 can be pre-assembled and limited after fixation through the engagement between the recess 510 and the connecting protrusion 420, thereby improving the connection stability between the outrigger 50 and the floating body connecting profile 40. Correspondingly, mounting holes are formed on the side walls of the recess 510 and the connecting protrusion 420, and a connecting bolt passes through the recess 510 and the connecting protrusion 420 to integrally connect the outrigger 50 and the floating body connecting profile 40, and the two are fixedly connected by tightening with a nut; the outrigger 50 and the floating body connecting profile 40 connected by bolts can maintain a stable connection effect, and can also be conveniently disassembled when some structures have problems, thereby reducing the operation and maintenance difficulty.

[0038] To further optimize the above technical solution, as Figure 4 shown, it is preferable that the connecting protrusion 420 is designed as a structure that contracts towards the mounting wall surface 410, so that after the recess 510 is inserted into the connecting protrusion 420, it can be limited from three directions by the expanding structure of the connecting protrusion 420. Preferably, the connecting protrusion 420 is an isosceles trapezoid structure, so that the limiting effects on both sides of the connecting protrusion 420 are more uniform. On this basis, due to the structure of the connecting protrusion 420, the outrigger 50 cannot be directly engaged with the floating body connecting profile 40. It needs to slide along the end of the floating body connecting profile 40 and reach the installation position so that the mounting holes on the recess 510 and the connecting protrusion 420 are aligned, and then the connecting bolt is inserted to achieve fixed connection.

[0039] In addition, the embodiment of the present invention further provides a floating photovoltaic power station, which includes modules composed of a plurality of floating bodies, and adjacent floating body modules 60 are fixedly connected into an integral structure through the connection module provided in any one of the above embodiments. It should be noted that since the above connection module has the above technical effects, this floating photovoltaic power station also has the above technical effects, which will not be repeated herein.

[0040] The terms "first", "second", etc. in the specification, claims and drawings of the present invention are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may include steps or units that are not listed.

[0041] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A floating body connecting profile, characterized in that, It includes a nested inner shell layer and an outer shell layer. The inner shell layer is located on the inner side and encloses to form a hollow cavity. A composite layer is filled between the inner shell layer and the outer shell layer. The composite layer is a resin with basalt fibers filled inside and cured into an integral structure. And the inner shell layer, the outer shell layer and the composite layer are formed into an integral structure by pultrusion process.

2. The floating body connecting profile according to claim 1, wherein, The inner shell layer and the outer shell layer are made of the same material, and are both felt layer structures filled with basalt fibers.

3. The floating body connecting profile according to claim 2, wherein, The mass density of the inner shell layer is 300 g / m 2 - 600 g / m 2 .

4. The floating body connecting profile according to claim 1, characterized in that The composite layer is also filled with an ultraviolet inhibitor and a binder. The resin is one or more of vinyl resin, epoxy resin and unsaturated resin.

5. The floating body connecting profile according to claim 1, characterized in that, The thickness of the inner shell layer and the outer shell layer is 0.1 mm - 1.0 mm.

6. The floating body connecting profile according to claim 1, wherein, The thickness of the composite layer is 1.0 mm - 6.0 mm.

7. A connection module, characterized in that, It includes legs and the floating body connecting profile according to any one of claims 1 - 6. A plurality of the legs are spacedly arranged on the installation wall surface of the floating body connecting profile, and the legs are fixed to the floating body connecting profile by means of bolt connection.

8. The connection module according to claim 7, wherein Connection protrusions are arranged on the installation wall surface, and corresponding recessed portions that are snap - fitted with the connection protrusions are arranged on the legs. Mounting holes are opened on the side walls of the recessed portions and the connection protrusions, and connecting bolts penetrate through the recessed portions and the connection protrusions.

9. The connection module according to claim 8, wherein The connection protrusion is an isosceles trapezoid structure and shrinks towards the installation wall surface. The recessed portion is also trapezoidal in cross - section and slides into the installation position along the end of the floating body connecting profile.

10. A floating photovoltaic power station, characterized in that, It includes a module composed of a plurality of floating bodies, and adjacent floating body modules are fixedly connected into an integral structure by using the connection module according to any one of claims 7 - 9.

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