Solar photovoltaic mounting structures
Solar photovoltaic mounting structures
Photovoltaic brackets have a variety of classification methods, such as welding type and assembly type according to the connection method, fixed type and day-by-day type according to the installation structure, and ground type and roof type according to the installation location. Regardless of the photovoltaic system, the structure of the support is generally similar, including connectors, columns, keels, beams, auxiliary parts and other parts.
Fixed solar photovoltaic support
Fixed solar photovoltaic bracket, as the name implies, refers to a bracket system whose orientation and angle remain unchanged after installation. The fixed installation method directly places the solar photovoltaic modules toward low latitude areas (at a certain angle to the ground), and forms a solar photovoltaic array in series and parallel to achieve the purpose of solar photovoltaic power generation. There are many ways to fix it. For example, there are pile foundation method (direct embedding method), concrete block counterweight method, pre-embedded method, ground anchor method, etc., and the roof fixing method has different schemes depending on the roof material. .
The support of the solar cell array is usually fixed by steel hot-dip galvanized processed products or stainless steel anchor bolts protruding from the reinforced concrete foundation. When the concrete foundation is used on the roof of the house, a part of the waterproof layer of the house is uncovered, and the concrete surface is peeled off. The steel bars of the concrete base for the array are welded together on the steel bars of the patio. When steel bars cannot be welded, in order to use the adhesion and weight of the concrete to resist wind pressure, the surface of the concrete base is uneven to increase the adhesion. After that, a second water-repellent treatment is performed with a water-repellent filler.
If the above method can not be implemented, you can lay relatively expensive silica gel and other weather-resistant cushioning materials on the waterproof layer, install a hot-dip galvanized steel frame on it, and then fix the array bracket on the steel frame. The steel frame is connected by plastic bolts to the protruding eaves wall around the house. The purpose is that the wind pressure does not cause the array and the steel frame to move. Play an auxiliary strengthening role.
Roof photovoltaic system bracket
The installation environment of roof solar photovoltaic support includes slope roof and flat roof. The installation must conform to the roof environment without destroying the inherent structure and self-waterproof system. Roofing materials include glazed tiles, color steel tiles, linoleum tiles, concrete surfaces, etc. Different roofing materials adopt different support schemes.
The roof is divided into slope and plane according to the inclination angle, so there are many options for the inclination angle of the roof photovoltaic system. For the slope roof, the layout method is usually used to conform to the roof slope, or it can be arranged at a certain inclination angle to the roof. , But this approach is relatively complicated, and there are fewer cases; for flat roofs, there are two options: flat roofing and tilting a certain angle.
There are different bracket systems for different roofing materials.
Glazed tile roof support
Glazed tiles are building materials made of soft and hard materials such as alkaline earth and purple sand after being extruded and plastic pressed. The material is brittle and has poor load-bearing capacity. When installing the bracket, a specially designed main supporting member is usually fixed to the lower roof of the glazed tile to support the main beam and cross beam of the bracket. The supporting member such as the connecting plate is usually designed in a multi-opening pattern as shown in Figure 2, which is flexible and effective. Bracket position adjustment. Aluminum alloy pressure blocks are used for crimping between the components and the beam.
Color steel tile roof bracket
Color steel plate is a steel formed by cold pressing or cold rolling of thin steel plate. The steel plate adopts organic coating thin steel plate (or color steel plate), galvanized thin steel plate, anti-corrosion thin steel plate (including asbestos asphalt layer) or other thin steel plates.
Profiled steel plate has the advantages of light unit weight, high strength, good seismic performance, fast construction, beautiful appearance, etc. It is a good building material and component, mainly used for enclosures, floors, and other structures.
Roof color steel tiles are generally divided into: vertical seam type, bite type (angle chi type) type, buckle type (concealed buckle type) type, and fixed connection (open nail type) type.
Upright seaming type bite type (angle chisel type)
Bayonet (concealed button) type fixed connection (open nail type) type
When installing a photovoltaic system on the color steel tile roof, the shape of the color steel tile and its load-bearing capacity should be fully considered to determine the fixing method of the bracket
