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Solar photovoltaic bracket is a special bracket designed for placing, installing and fixing solar panels in solar photovoltaic power generation systems. The general materials are aluminum alloy, carbon steel and stainless steel.

The related products of the solar support system are made of carbon steel and stainless steel. The surface of the carbon steel is hot-dip galvanized and will not rust for 30 years in outdoor use. The solar photovoltaic support system is characterized by no welding, no drilling, 100% adjustable, and 100% reusable.

The global energy crisis has promoted the rapid development of the new energy industry, and solar energy is the most important basic energy source among all kinds of renewable energy; therefore, as a solar power generation technology that converts solar radiant energy into electrical energy, the photovoltaic industry is also developing Fast; In the old concept, the photovoltaic industry mainly includes the production chain of solar modules, and the production chain of electrical control components such as controllers and inverters.

The application advantages of solar support system in solar panel support are far more than simple production and installation. Solar panels can also move flexibly according to the sun's rays and seasons. Just like when it was just installed, the slope of each solar panel can be adjusted to adapt to different angles of light by moving the fasteners, and the solar panel can be accurately fixed at the designated position by tightening it again.

The challenge faced by the design of solar photovoltaic stents, one of the most important features of the assembly components of any type of solar photovoltaic stent design is weather resistance. The structure must be strong and reliable, able to withstand such external effects as atmospheric erosion, wind loads and other external effects. Safe and reliable installation, maximum use effect with minimum installation cost, almost maintenance-free, reliable maintenance, these are important factors that need to be considered when making a selection plan. Highly wear-resistant materials are used in the solution to resist wind and snow loads and other corrosive effects. Comprehensive use of aluminum alloy anodic oxidation, ultra-thick hot-dip galvanizing, stainless steel, anti-UV aging and other technical processes to ensure the service life of solar stents and solar tracking.

The maximum wind resistance of the solar stent is 216 km/h, and the maximum wind resistance of the solar tracking stent is 150 km/h (more than 13 typhoons). The new solar module bracket system represented by solar single-axis tracking bracket and solar dual-axis tracking bracket, compared with the traditional fixed bracket (the number of solar panels is the same), can greatly increase the power generation of solar modules, using solar energy The power generation of the single-axis tracking bracket assembly can be increased by 25%, and the solar dual-axis bracket can even be increased by 40% to 60%.

The photovoltaic support structure must be firm and reliable, able to withstand atmospheric erosion, wind loads and other external effects. It should have a safe and reliable installation, can achieve the maximum use effect with the minimum installation cost, almost free of maintenance, and reliable maintenance. A good stent needs to consider the following factors:

(1) The strength of the material must withstand climatic factors for at least 30 years.

(2) It remains unaffected under extreme weather such as snowstorms or typhoons.

(3) The bracket needs to be designed with groove rails to place wires to prevent electric shock.

(4) The electrical equipment should be installed in a non-environmentally exposed and convenient for regular maintenance.

(5) It must be easy to install.

(6) The cost should be reasonable.

A high-quality bracket system must use computer simulation software for extreme weather conditions to verify its design, and conduct strict mechanical performance tests, such as tensile strength and yield strength, to ensure the durability of the product.

The material of the solar photovoltaic bracket

At present, the solar photovoltaic brackets commonly used in China are divided into three types: concrete brackets, steel brackets and aluminum alloy brackets.

Concrete supports are mainly used in large-scale photovoltaic power stations. Because of their self-weight, they can only be placed in the field and in areas with good foundations. However, they have high stability and can support large-scale solar panels.

Aluminum alloy brackets are generally used in solar energy applications on the roof of civil buildings. Aluminum alloy has the characteristics of corrosion resistance, light weight, beautiful and durable, but its low self-carrying capacity cannot be applied to solar power station projects. In addition, the price of aluminum alloy is slightly higher than that of hot-dip galvanized steel.

The steel bracket has stable performance, mature manufacturing technology, high bearing capacity and easy installation. It is widely used in civil and industrial solar photovoltaic and solar power stations. Among them, the section steels are all factory-produced, with uniform specifications, stable performance, excellent corrosion resistance and beautiful appearance. It is worth mentioning that the combined steel bracket system, for on-site installation, only needs to use specially designed connectors to assemble the channel steel. The construction speed is fast and no welding is required, thus ensuring the integrity of the anti-corrosion layer. The disadvantage of this kind of product is that the connecting piece has a complicated process, a wide range of types, and high requirements for manufacturing and design, so it is expensive.

Technical difficulties of solar photovoltaic support system:

In fact, the manufacturing process of the finished stent is not simple, and high-quality products often have multiple technical patents. The following is an example of an assembled steel bracket.

First, high-quality section steel usually has a high-level galvanizing process. According to the requirements of national standards, the average thickness of the galvanized layer should be greater than 50μm, and the minimum thickness should be greater than 45μm. In fact, although the average thickness of the galvanized layer of many products can meet the requirements, the minimum thickness is less than 40μm, and pitting corrosion often occurs in actual use. The corrosion rate of halogen to steel is very fast, and within one year may cause the weakening of the overall support structure, causing safety hazards. Therefore, it is not easy to achieve a highly uniform galvanizing process.

Secondly, the connection of section steel and steel is a technical difficulty. A complete set of effective connection methods includes not only the clever ideas on the connecting piece, but also the design of the channel steel back hole, the occlusal tooth and so on. This involves various iron and steel metallurgical technologies such as stamping and casting.

In addition, double-sided channel steel used for bearing larger loads must be welded back to back. There is a big gap between the levels of various welding processes. Pressure laser welding can ensure the uniform connection of the full section, and the two channel steels are completely integrated and bear the force together; while the electric welding technology can only fix the two channel steel parts together, and the force form is closer to the laminated beam. In order to improve the bearing capacity of some section steels, cold rolling of stiffeners is added to the channel steel.

In short, there are many technical difficulties in the production process of the assembled section steel bracket, which requires metallurgical engineering and technical personnel to overcome technical barriers and further reduce its use cost.


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