According to the design of the PV rack, the size of the square array can be determined according to the specifications of the PV module used, the number of components, and the array layout of the components. Second, the design principle of the maximum annual power generation of the photovoltaic power generation system is based on the latitude and longitude of the location of the project. The best inclination and front-to-back spacing of the square matrix can be determined. Third, the maximum wind load that the square array will bear can be determined according to the wind resource and the maximum wind level of the project site. Based on this, the matrix of the opponent array and the phalanx bracket are subjected to force analysis and designed according to the principle of mechanical design. In addition, when the photovoltaic array is designed, the lower edge of the photovoltaic array should be at a height of 30 to 50 cm from the ground or the roof. In order to avoid being covered by weeds and buried in snow in winter. The base (or base) of the matrix is ​​generally cast on the ground or on the structural layer of the roof, or on the roof of the grid (putting weights). Square array brackets are generally fixed with flanges and square base (or base) embedded parts, but also with concrete holes drilled with expansion bolts. On the roof of a building, the base (or pedestal) of the phalanx should be located in the position of the wall or beam on the main structure in accordance with the design requirements, and be firmly fixed to the main structure. At the same time, it should be noted that the incorrect installation position of the square bracket on the base (or base) of the square array will cause the bracket to deflect and affect the force of the main structure. The square array bracket should be made according to the design requirements. The installation and welding of the steel structure bracket should meet the requirements of the current national standard “Code for Acceptance of Construction Quality of Steel Structure Engineering†gb50205. In the design of square matrix and square array brackets, factors such as load-bearing capacity, wind resistance, and earthquake resistance should be fully taken into account. In the coastal areas, typhoon resistance, moisture prevention, and salt spray corrosion must also be considered. The anti-corrosion coating should be applied to the square bracket before installation, and the exposed metal embedded parts should be treated with anti-corrosion and anti-rust to prevent the embedded parts from being damaged and lose their strength. The fasteners used to connect the square brackets should be made of stainless steel. If the design is made of galvanized parts, they must meet the requirements of the national standards, so as to ensure the life and corrosion protection. The number of bolts, nuts, flat washers, spring washers, specifications and models should meet the design requirements. After bolting, the length of the exposed part should be 2/3 of the diameter of the bolt. Specific ground-based photovoltaic power plants are now described. According to the actual situation on the site, on a well-prepared site, set points, excavate the foundation pit, place embedded parts, position the mold, and pour the concrete. After 48 hours of maintenance, install the phalanx bracket, battery assembly, wiring, and lightning protection. , laying trunking. As is well known, as a glass force member, the solar cell module is very sensitive to deformation, which is mainly reflected in the fact that the glass is a brittle material, which is extremely easy to cause damage due to uneven settlement of the support and the expansion and contraction of the battery module. . Since the expansion coefficient of steel and glass is different, when the constraining rigidity of the glass member is large, expansion force will be generated between the glass member and the steel member, thereby causing a disadvantage to the glass member. Therefore, the use of the cold-formed thin-walled profile as the supporting structure of the battery module overcomes the adverse effects of the rigid constraint of the steel structure, and plays a buffer role in eliminating component deformation, ground deformation and expansion deformation, and is an ideal supporting structure of the solar cell module. Due to the optimization of the structural design of the support and the foundation, not only can the requirements for the installation and operation of the components be met, but also the investment in the support and the foundation can be significantly reduced. Measuring length: straightedge, tape measure, micrometer, micrometer, level meter; Measuring Tools,Tape Measure,Digital Vernier Caliper,Spirit Level Pen,Mutifunction Tape Measure Rugao Yaou Import & Export Trade Co., Ltd , https://www.ntyaoumachinery.com
Measuring angle: protractor, dividing head, theodolite, sextant, knife-edge angle ruler;
Weather measurement: thermometers, barometers, wind vanes, rain gauges, computers, and satellites.
More conventional: projector, hardness tester, hundred grid knife, etc.
Measuring tool: It is a tool for measuring a certain property. Including length, temperature, time, mass, force, current, voltage, resistance, sound, radio, refractive index and average dispersion.
Weight measurement: balance scale, floor scale, spring scale, etc.;
Temperature measurement: thermometer, thermometer, etc.;
Pressure measurement: pressure gauge, pressure transmitter, etc.;
Flow measurement: flow meter, differential pressure detector, etc.;
Liquid level measurement: differential pressure gauge, liquid level gauge, etc.;
Electric energy measurement: voltmeter, ammeter, field strength meter, frequency meter, etc.;
Composition measurement: analyzer, chromatograph, etc.;
Acid-base measurement: acidity meter, alkalinity meter, etc.