As we all know, solar photovoltaic racking is a solar photovoltaic power plant in order to place, install, and fix the solar panels designed for the special bracket, the general material is divided into metal and non-metallic. The metal material bracket is divided into aluminum alloy, galvanized steel and stainless steel. Today for you to summarize the solar photovoltaic bracket of several material composition:
Aluminum alloy photovoltaic mounts:
Aluminum alloy photovoltaic stent material weight is generally about 2.71g/㎡, its profile deformation is about 2.9 times that of steel, the strength is about 70% of the strength of steel, anti-corrosion is generally used in anodic oxidation treatment measures, the minimum average thickness of the oxide film is not less than 15 um, and the aluminum in the air can automatically form a protective film, the later use of the anticorrosive maintenance is not required. Therefore, aluminum alloy photovoltaic bracket has the characteristics of light weight, beautiful and durable, corrosion resistance, etc., but its bearing capacity is low, the price is high, about three times the price of steel. Aluminum alloy photovoltaic mounts are generally used for distributed photovoltaic projects on the roofs of buildings that have requirements for load-bearing.
Galvanized steel photovoltaic mounts:
Galvanized steel photovoltaic support, generally use Q235 section steel as the main material, the so-called section steel refers to a certain cross-section shape and size of the bar steel, its main types of I-beam, channel steel, angle steel, square steel, C-beam, H-beam and so on. The weight of this material is generally about 7.85g / ㎡, high mechanical strength, for the main beam and column plate thickness should not be less than 2.5mm, when there is a reliable basis for the plate thickness can be taken 2mm, for the secondary beam plate thickness should not be less than 1.5mm, anti-corrosion is generally used in the hot invasion of galvanized treatment measures, galvanized layer thickness of not less than 65um, the later use of anti-corrosion maintenance is required. Galvanized steel photovoltaic racking performance is stable, the manufacturing process is mature, high load-bearing capacity, so it is mainly used in the strength of the requirements of the power station, such as large-scale ground-based power stations, galvanized steel photovoltaic racking is the most commonly used solar photovoltaic racking.
Flexible photovoltaic mounts:
Flexible photovoltaic (PV) mount is a steel cable prestressed structure, which is composed of pile foundation, column assembly, end beam assembly, steel cable fasteners, and panel fixing assembly. Its photovoltaic bracket materials are mainly steel strand, steel rope, steel cable, steel cable or steel chain in any one or more combinations. Its anti-corrosion generally use hot invasion galvanized treatment measures, galvanized layer thickness of not less than 65um, the later use of anti-corrosion maintenance. This photovoltaic racking system can save the project cost, saving 30%-40% of the amount of steel than the same conditions of photovoltaic photovoltaic racking, and can resist 16 typhoons. Flexible photovoltaic racking is suitable for sewage treatment plants, mountainous areas with complex terrain, roofs with low load bearing, forest light complementary, water light complementary and other span and height limitations caused by the traditional photovoltaic racking structure can not be installed in the region. Flexible photovoltaic racking has a wide range of applicability, flexible use, saving engineering costs, and can realize the secondary use of land, the future has a broad development prospects.
Stainless steel (304) photovoltaic mounts
Stainless steel (304) photovoltaic bracket weather resistance, recyclable high value, but the material cost is high, and thus is rarely used.
Non-metallic Photovoltaic Racking
Non-metallic photovoltaic mounts, whose materials are mainly fiber composites, are characterized by light weight, good strength, good stress and low cost. However, because it is a new material, its characteristics are yet to be tested in the actual project, and it is less used at present.