Classification and characteristics of the base part of the ground solar support system
Solar photovoltaic power generation technology continues to mature, practicality is also more and more extensive, at present, the photovoltaic market attracts many enterprises to invest in projects to obtain profits, but how to adapt to local conditions to choose the right solar support, is to ensure the efficient operation of the entire photovoltaic system is an important link. Today I will mainly talk about the classification and characteristics of the basic part of the ground solar support system.
First, solar support design material selection matters needing attention
The installation structure of the solar photovoltaic support should be simple, strong and durable. The materials used to manufacture and install the PV array should be able to withstand various harsh environments at the project site to ensure 25 years of weather resistance, corrosion resistance and structural strength stability. Electroplated aluminum profiles, electroplated steel and stainless steel are commonly used materials.
Common ground solar photovoltaic support foundation
2. Prefabricated pile foundation
Precast piles are all kinds of materials and forms of piles (such as wooden piles, concrete square piles, prestressed concrete pipe piles, steel piles, etc.) made in factories or construction sites, which are driven, pressed or shaken into the earth by pile driving equipment. Precast concrete pile and steel pile are mainly used in construction field in China.
Features: Batch production, fast construction speed, construction does not exist filling, only simple field leveling. However, when the pile body is squeezed into the soil by static pressure or hammer equipment, the pile body is prone to fracture, and the pile top needs to be reinforced by steel mesh, which increases the cost and the verticality is not easy to ensure.
Scope of application: mostly used for silt soil, clay soil, fill soil, collapsible loess, etc.
3, hammer into the ground pile
Introduction: Using pile driver to drive C-section steel, H-section steel or other structural steel directly into the ground, this installation method is very simple, but the tensile performance is poor.
Features: fast speed, strong adaptability; High cost performance; Not subject to seasonal temperature and other restrictions; It is convenient to remove the ground pile and does not affect the reuse of the installation site.
Scope of application: it is very difficult to drive piles in hard soil areas; It is easy to galvanize the pile in the area with more gravel; The corrosion resistance is poor in saline-alkali area.
4. Screw ground pile
Introduction: Since the 1880s, as an alternative pile type screw pile with unique advantages, it has been widely used in America, Australia, Europe and other countries, which can meet various engineering requirements such as compressive resistance, tensile resistance and horizontal force resistance.
Characteristics: a spiral blade column pipe pile or pile of metal or nonmetal material, using special equipment for rotary screw into the ground, pile cap connection load, its advantage is construction convenient, greatly shorten the construction cycle, friendly to the environment, environmental protection, no vegetation, can be in all kinds of weather conditions, including the northern winter, can easily migrate and recycling.
Scope of application: Gobi, rocky mountain, grassland, beach, desert, etc.
In the construction process of photovoltaic array foundation and support, damage to related buildings and auxiliary facilities should be avoided as far as possible. If partial damage is caused due to construction needs, it should be repaired in time after the construction. So-called all things are difficult before they are easy, as long as we strictly control in the foundation construction, make all the deviation meets the requirements, not only can avoid the subsequent ground bracket of solar system installation, such as the skew, distortion, etc., greatly reduce the error to adjust the amount of work, and to improve the efficiency of subsequent bracket installation, ensure that bracket installation overall stable etc also play an important role.
The focus of photovoltaic system design is to ensure the safe and efficient operation. The photovoltaic support is a non-negligible link in the installation process, which carries the main body of photovoltaic power generation. The selection of the bracket directly affects the operation safety, damage rate and construction investment of the PV module. The selection of the appropriate PV bracket can not only reduce the project cost, but also reduce the later maintenance cost. So what are the components of the photovoltaic bracket accessories?
A system used to support photovoltaic cell modules. Columns, supports, beams, shafts, guides and accessories made of metal materials may also be equipped with transmission and control components for tracking the sun's path.
2. Fix the bracket
Support with non-adjustable inclination and azimuth Angle.
3, single axis tracking bracket
A holder that tracks the sun by rotating about an axis.
4, dual axis tracking bracket
A bracket that rotates around two axes to track the sun.
A component connected to the foundation for supporting beams, shafts, guides, etc.
Components used to strengthen the stability of columns, beams and guides.
A component used to support a guide rail.
A component used to support and adjust the Angle of the guide rail (for tracking brackets).
9, the guide rail
Components used to support photovoltaic modules.
10, connecting rod,
Mechanical transmission components between support and power system (suitable for photovoltaic tracking support).
11, the attachment
It refers to the parts used for the connection between straight segments and between straight segments and bending-through to form the connection necessary for the continuous photovoltaic bracket system to fix or supplement the function of straight segments and bending-through. The accessories of the bracket are divided into: linear connecting plate, hinge connecting plate, turning connecting plate, variable Angle connecting plate, next door, pressing plate, fastener.
As the support structure of solar power generation system, photovoltaic scaffold plays an important role in the safe and efficient operation and cost control of the system. The PV bracket accessories need to consider durability, corrosion resistance, tunability, economy, construction convenience, etc. The materials should be able to withstand various harsh environments of the project site, to ensure 25 years of weather resistance and corrosion resistance and structural strength stability.
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