Material Requirements and Structural Characteristics of FRP Cooling Tower
Release Time:2021-07-19
The production process of glass fiber reinforced plastic cooling tower has strict requirements on the material, the following small series to introduce it to you:
1. Resin content: the resin content of the tower body (excluding the gel coat layer and the resin-rich layer) is controlled at 45%-55%, the resin content of the resin-rich layer is above 70%, the injection molding part is above 65%, and the resin content of the glass fiber reinforced plastic fan blade molded by negative die is controlled at 43%-50%.
2. Flame retardant performance: For cooling towers with flame retardant requirements, flame retardant resin is used for the tower body, and its oxygen index is not less than 26.
3. Curing degree: The curing degree of unsaturated polyester resin FRP is not less than 80%, and the curing requirement of epoxy resin FRP is not less than 90%.
4. Fan: The characteristic parameters of the fan should meet the requirements of the design working conditions, and its main accessories (such as motors, reducers, etc.) should meet the relevant technical regulations.
The glass fiber reinforced plastic cooling tower has good corrosion resistance, heat resistance and other aspects due to the material relationship. However, one drawback is that the glass fiber reinforced plastic cooling tower has good rigidity but great brittleness. If there is a little accident in storage or operation, the steel tank is prone to rupture. Therefore, we should pay special attention to the storage and operation during work.
We should put the glass fiber reinforced plastic cooling tower in a relatively wide place as far as possible, and be sure to stay away from the fire source. The ignition point of the glass fiber reinforced plastic device is relatively low. If there is a fire source, it is easy to cause great losses. At the same time, we should choose a relatively flat ground for storage. If there is sharp substance, it is easy to cut the container. In addition, we should take measures to prevent wind. Its weight is very light, so it is easy to be blown, so you can fix it properly.
Today's small series is mainly for you to introduce the structural characteristics of glass steel cooling tower.
In order to save energy, the large glass fiber reinforced plastic cooling water tower is mostly used for natural ventilation cooling water tower, which is composed of ventilation cylinder, herringframe column, ring base, water spraying device and tower center material. The ventilation cylinder is mostly reinforced concrete hyperbolic rotating shell, which has good structural mechanics and fluid mechanics characteristics of cooling tower. The lower edge of the shell is supported on V-shaped or X-shaped inclined pillars with equal distance to form the air inlet of cooling water tower. The load of cooling water tower, the foundation is mostly made of an inclined ring foundation to bear part of the ring tension from the inclined pillar, or a separate single foundation or pile foundation.
The throat of the air cylinder has the smallest diameter. When the pressure of the shell is calculated to be stable, the shell wall is the thinnest, and the upward diameter gradually increases to form the airflow outlet diffusion section. A rigid ring is arranged at the top of the tower. The throat is gradually expanded in a hyperbolic shape. The lower shell wall is correspondingly thickened to form a lower ring beam with certain rigidity, A 146-meter-high dry cooling tower in Schmehausen's nuclear power plant uses a net cable structure tower, an aluminum guard plate, and an aluminum guard plate, which has good seismic and wind resistance.
The characteristics and advantages of the components in the cross-flow FRP cooling tower:
1. Panel: FRP raw material, smooth and beautiful surface, corrosion resistance and anti-aging.
2. Filler: It is a modified polyvinyl chloride two-way point wave plate, with good thermal function, low airflow resistance, good rigidity, heat resistance, cold resistance and flame retardant.
3. Fan: The raw material of the blade is alloy aluminum plate, the fan has reasonable aerodynamic force, large air volume, high efficiency, low noise, corrosion resistance and other characteristics.
4, motor and reducer: for outsourcing equipment.
5. Water distribution tank: glass fiber reinforced plastic raw material, uniform water distribution, ultra-low noise type with cover plate to shield light, prevent debris from flying in, and reduce splashing sound.
6. Noise reduction cover: glass fiber reinforced plastic raw material, internal adhesive cavity type flame retardant polyvinyl chloride film noise reduction material.
7. Shutters: glass fiber reinforced plastic raw materials, which can be waterproof and splashed, and can make the air flow into the tower uniform.
8. Water tank: glass fiber reinforced plastic raw material, which has a water collection effect, and is equipped with active water replenishment equipment, which can directly absorb water in a closed cycle.
9. Skeleton: folded steel assembly layout, good rigidity, light weight, transportation, convenient installation, hot-dip galvanized anti-corrosion.
Shandong Xingheng Environmental Technology Group Co., Ltd. is located in Luquantun Development Zone, Dezhou, Shandong Province, the hometown of glass fiber reinforced plastic in China. The company has three-level qualification for construction mechanical and electrical installation engineering, three-level qualification for environmental protection engineering, and safety production license. It is the first in the industry to pass ISO9001 quality management system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health management system certification, an axial fan invention patent, a fan utility model patent, EIA, three at the same time and other procedures are complete.
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Address: Development Zone, Luquantun Town, Wucheng County, Dezhou City, Shandong Province
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