Problems in the installation of solar mountingsolar mounting structures and their solutions

2020-12-31 09:49
1. Components of solar mounting structures
Welding and assembling are the two main connection methods of solar stents. Welding has lower requirements for angle steel, lower price, better connection effect, stronger connection, and more common applications. The problem with welding is that the connection point is prone to corrosion, and the maintenance cost will be high. Anti-corrosion work must be carried out every other year to avoid problems with the bracket. Because the maintenance work is more troublesome and the cost is high, welding The cost is very high. In addition, welding will consume a lot of electricity when used in field installation, which will also increase costs. Although welding has low material requirements and a link effect number, the process is slightly rough, the bracket is not beautiful, and it is less and less in line with people's aesthetic needs. Therefore, photovoltaic brackets are gradually not suitable for welding brackets.
Problems in the installation of solar mounting structure and their solutions
Channel steel is gradually replacing these welding brackets to overcome the above problems. As a kind of splicing bracket, the finished channel steel bracket does not need welding on site. It can be spliced ​​directly on site by bolts. It has fast installation speed, beautiful appearance, very durable and easy to adjust. The production of this kind of bracket mainly facilitates the connection between channel steels. , Firm and easy to disassemble.
Problems in the installation of solar mountingsolar mounting structures and their solutions
2. The connection of the solar mounting structure base
The form of the double-row column support depends on the actual situation. In general, the construction of roof solar energy can adopt the method of concrete block counterweight and embedded parts, and the construction of solar power station adopts the method of laying on the ground and directly buried. Applying different methods to different aspects will result in different effects. The first two methods are mainly to prevent the roof waterproof layer structure from being damaged, and the latter two are applied to the entire power station to improve the safety and reliability of the power station and thus to operate normally.
In the construction of solar power stations, the ground anchor method has a high safety factor and is a commonly used method during construction. However, the use of ground anchor method to pay high cost, careful design and customization can make the connection part of the solar bracket stronger. The direct-buried method is more convenient than the ground anchor method and does not require special customization. However, before carrying out the direct-buried method, it is necessary to conduct a geographical survey experiment to ensure that the low-quality is very direct-buried. solar mounting solutions are more suitable for direct burial, because their arrangement is restricted by solar panels.
3. Installation of new cold-formed thin-wall solar bracket components
1) Connection of steel structural members. The material of the new cold-formed thin-walled solar stent is mainly made of various mixed steel and plastic connections. Generally, it should be pre-ordered and made in advance. Because of the variety of these steel and plastics, the scope of use is relatively wide. Conditions are fine. Ensuring the correct connection of steel structural members is a prerequisite for the design of the support structure.
2) The support is connected to the foundation. The connection between the new cold-formed thin-walled solar support and the foundation is generally independent, but in a poor environment, it is best to use a strip foundation and other foundations that can adapt to poor geology
3) Bracket purlin connection, bracket purlin connection has three ways: rigid connection, hinge connection, semi-rigid connection, hinge connection is the most convenient. When encountering harsh environments such as strong winds, rigid connections should be adopted to ensure that the beams and columns of the support are firm. The semi-rigid joint has the performance that the articulated joint does not have, and it also makes up for the complicated construction of the rigid joint, and has the advantage of making up for the shortcomings of the two. However, semi-rigid connections are generally not adopted during construction.
4. Technical difficulties of solar mounting structure system
solar mounting system have high requirements for technology. From the point of view of materials, if the quality of section steel is to be improved, it should be manufactured with a skilled galvanizing process and meet relevant national standards. Due to the extremely high requirements of the galvanizing process, from the thickness of the galvanized layer to the convenience of manufacturing, the standards should be strictly implemented. If there is a little non-compliance, it may cause problems in use, such as corrosion. Among them, halogen has the greatest impact on steel corrosion. Its rapid corrosion rate and large range will quickly cause the support to be weak and cause serious quality problems. It can be seen that the prerequisite for manufacturing a high-standard solar photovoltaic stent system is to have a high-level galvanizing process.
From the connection point of view, the connection method of section steel also requires clever ideas and continuous development. Many people have conducted years of research for this, and formed a set of effective connection methods belonging to section steel. In the connection, not only the safety of the connecting piece must be considered, but also the design of various aspects of the channel steel, such as saving steel, convenient installation, lower cost, and quick adjustment. In short, the connection method of section steel needs to be continuously explored in order to keep up with the rapid scientific development.
From the application point of view, if it is a double-sided channel steel, it must have a large bearing capacity, so back-to-back welding is adopted. The use of pressure laser welding and electric welding will have completely different effects. The former can achieve the purpose of back-to-back welding, so that double-sided channel steel can be combined into one, uniformly connected, and beautiful; while the latter can achieve channel steel connection, but it cannot be completely The connection can also be done with a square tube.

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