The photovoltaic support made of aluminum profiles is an important part of the photovoltaic power station made of aluminum profiles. It carries the power generation main body of the photovoltaic power station made of aluminum profiles. The choice of the support directly affects the operation safety, breakage rate and The construction investment and the selection of photovoltaic brackets made of suitable aluminum profiles can not only reduce the project cost, but also reduce the post-maintenance cost.
1. Types of photovoltaic brackets made of aluminum profiles
1. According to material classification
According to the different materials used for the main force-bearing rods of photovoltaic brackets made of aluminum profiles, they can be divided into aluminum alloy brackets, steel brackets and non-metallic brackets. has characteristics.
2. Classification according to installation method
Second, the introduction of photovoltaic brackets made of fixed aluminum profiles
The photovoltaic array made of aluminum profiles does not rotate with the change of the incident angle of the sun, and receives solar radiation in a fixed way. According to the setting of the inclination angle, it can be divided into: the preferred inclination angle fixed type, the inclined roof fixed type and the inclination adjustable fixed type.
How to deal with the waterproofing when installing the roof photovoltaic support?
At present, domestic roofs can be roughly divided into household glazed tile roofs, concrete flat roofs and color steel tile roofs. Regarding the installation of rooftop solar power plants, "waterproof" has to be said to be a very important element!
The first thing that needs to be informed is that the general principle of roof waterproofing treatment is: it should be guided and not blocked, that is, to ensure that the node treatment can smoothly drain the water during the rainstorm to ensure that the roof does not leak.
Therefore, in the design, the support base should be arranged not perpendicular to the drainage direction, so as not to hinder the drainage of roof rainwater. In addition, when the photovoltaic system is installed by directly placing the bracket base on the existing roof during construction, the base is not related to the structural layer of the original roof. Therefore, in order to ensure the safety of the structure, it is necessary to ensure that the base is placed stably and uniformly. , and need to take measures to stop the fixation to prevent overturning, slippage and other phenomena. Since the base is not related to the structural layer, it is difficult to install an additional waterproof layer. The waterproof layer of the original roof should be preserved as much as possible to avoid leakage.
For the situation where it is necessary to punch holes to destroy the original roof, it is necessary to make tailor-made, and make different treatments according to different situations.
Waterproofing of concrete flat roof photovoltaic support
For new buildings with concrete flat roof or villa concrete sloping roof (overlying tiles), usually pre-embedded bolts should be embedded in the design, and the roof should be waterproofed according to conventional practices.
For existing buildings with concrete flat roof or villa concrete sloping roof (overlying tiles), the roof structure should be confirmed first. When connecting the photovoltaic module base to the structural layer, the surrounding metal embedded parts on the top of the base are waterproof and thin links. If the treatment is improper, the rainwater will easily seep from the bolts of the embedded parts to the structural layer, causing corrosion to the stressed steel bars of the structural layer. , which constitutes a safety hazard. Therefore, when setting the photovoltaic module base, the waterproof layer should be laid on the upper part of the base and the metal embedded parts, and sealing treatment should be done around the anchor bolts, and the waterproof layer should be filled with waterproof sealant to prevent rainwater seepage. In addition to the way, an additional waterproof layer should be added at the lower part of the base. Even if the top of the base leaks, the rainwater will not reach the structural layer.
2. Waterproof of color steel tile photovoltaic support device
For the color steel tile roof, the steel structure of the photovoltaic system needs to penetrate the original waterproof layer and the profiled steel plate, and be fixed on the main steel structure of the building; then refer to the waterproof method of the color steel tile roof, and stop the steam insulation, heat preservation and waterproofing. dispose of. The focus of construction is to remove rust, seal, and apply waterproof paint to the base and periphery.
For some leaks on the color steel tile roof, high-quality neutral weather-resistant sealant should be used to block them; for some color steel plates with serious corrosion, they need to be replaced before installing photovoltaic modules.
1) Regarding the situation that the cross-section of the color steel plate rib is trapezoidal: the solar support is usually connected to the color steel plate from the side or the top surface through self-tapping bolts. Self-tapping bolts must be equipped with matching weather-resistant sealing waterproof gaskets, and after the self-tapping bolts are fixed, high-quality neutral weather-resistant sealant must be applied to the screws.
2) Regarding the situation where there are cable casings passing through the roof panel: there are practices in the atlases of the existing national standards. In design and construction, it can be selected according to the detailed conditions of theoretical engineering.
3) Regarding the condition of the cable passing through the roof panel: Detai cover sheet can be used to stop waterproofing. Detai cover sheet is a kind of roof waterproof structure, which is often used on the roof of colored profiled steel plates. It has good physical properties and chemical corrosion resistance, and can prevent water leakage of rigid waterproof materials.
For the situation where it is necessary to punch holes to destroy the original roof, that it is necessary to make tailor-made more, and make many differents treatments according to different oyher situations .
Sino Green New Energy Tech Co Ltd