Do you really know about solar racking?

PV mounts can be categorized into 3 types: fixed, tilt-adjustable and auto-tracking. The connection method generally has two forms of welding and assembly. The fixed stent can be divided into roof type stent, ground type stent and water type stent; automatic tracking stent is divided into single-axis tracking stent and dual-axis tracking stent. This article is about fixed bracket first.

Fixed bracket is also called fixed inclination bracket, after the bracket installation is completed, the component inclination and orientation can not be adjusted. Fixed bracket is divided into roof type, ground type, water type and so on.

1. Roof type bracket.

Roof bracket is generally divided into color steel roof bracket, sloping roof (tile roof) bracket and flat roof bracket 3 categories. The color steel plate roof bracket mainly consists of color steel plate fixture or fixed parts, rail (beam), component pressure block, rail connectors, bolt washer, slider nut and so on.


Pitched roof bracket mainly consists of roof fixing hook, rail (beam), component pressure block, rail connectors, bolt washer, nut slider and so on.

The above two kinds of brackets are generally made of finished C-beam steel or aluminum alloy as the main supporting structural parts, which have the advantages of fast assembling and disassembling, no need for welding, even anticorrosion coating, good durability, fast installation, beautiful appearance, and so on. Flat roof bracket and ground bracket structure is similar to the general concrete counterweight block as the bracket foundation, try not to damage the roof waterproof layer, with flexible structure, convenient installation characteristics.


2. Ground type bracket.

Ground type bracket is divided into single column bracket, double column bracket and single ground column bracket 3 categories. Single-column bracket is also the bracket by a single row of column support, each unit only a single row of bracket foundation. Single-column bracket is mainly composed of column, inclined support, rail (beam), component pressure block, rail connectors, bolt washers, nut slider, etc. The column is made of C-beam, H-beam, square steel pipe and other materials. Single-column bracket can reduce the amount of land construction and is suitable for areas with complicated terrain. Double-column bracket is in the form of front and rear columns, which mainly consists of front column, rear column, inclined support, guide rail (crossbeam), rear support, component pressure block, guide rail connector, bolt washer, nut slider, etc. The columns are made of C-beam, H-beam, square steel pipe, round steel pipe, etc. according to the size of the square array, and the other components are made of C-beam, aluminum alloy, stainless steel, etc. according to the needs. Double column bracket has even force, simple processing and production, and is suitable for areas with relatively flat terrain.

Single ground column bracket means a square unit bracket with only one column bracket form. As the entire array only a column, a single set of bracket can be arranged on the limited number of battery components, generally 8, 12, 16, etc.. The single ground column bracket is mainly composed of column, longitudinal beam, guide rail (crossbeam), component pressure block, guide rail connector, bolt washer, nut slider, etc. The column can be made of steel pipe, prefabricated cement pipe, etc. Due to more overhangs, the longitudinal beam and crossbeam are generally made of square steel pipe, and the guide rail is made of C-type steel or aluminum alloy. This kind of stent is suitable for areas with high water table and rich ground vegetation.

3.Water surface type bracket.

With the continuous promotion of distributed photovoltaic power generation projects, making full use of the sea, lakes, rivers and other water surface resources to install distributed photovoltaic power stations, the implementation of new forms of photovoltaic agriculture, such as fishery and light complementation, is another way to solve the problem of photovoltaic power generation is limited by land resources. Surface type bracket generally have floating type and column type two kinds, floating type bracket by the float and bracket two parts, as shown in Figure 6-9, the float using high strength material production and conduct the conjoined design, good stability, impact resistance, can effectively prevent all kinds of water and wind caused by the PV module caused by the damage. Stents are generally made of stainless steel, aluminum alloy and other materials with strong corrosion resistance.

Column stent and the structure of the ground class stent is more or less the same, only the column is longer, to ensure that the stent exposed to the water surface, at the same time, the column material should be selected to withstand long-term corrosion resistance in the water immersion.