Selection Skills For Shell Materials Of Closed Cooling Towers
In addition to determining the appearance of the closed cooling tower, the shell of the closed cooling tower also protects the closed cooling tower, because the closed cooling tower uses internal circulating water, spraying The water is also recycled. If the outer plate is damaged during the working process, the entry of foreign objects will affect the water quality and cause blockage. If it affects the cooling effect, it will cause damage to the machine. Therefore, the outer plate should not be taken lightly.
The common closed cooling tower outer plate raw materials on the market are mostly the following three categories:
- Magnesium-aluminum-zinc steel plate
The aluminum-magnesium-zinc steel sheet is a high-performance coated steel sheet, and its galvanized layer is mainly composed of zinc, which is composed of zinc plus 11% aluminum, 3% magnesium and a trace amount of silicon. It is a kind of steel plate after secondary anti-corrosion treatment. It has good anti-corrosion properties, moderate cost, and ordinary scratches are self-healing to reduce rust damage.
- Glass steel plate
FRP has the strongest corrosion resistance and the cheapest price. However, because the closed cooling tower is placed outdoors all the year round, it is easy to age when exposed to direct sunlight. In addition, the FRP material is not compressed or heavy, and the production process is polluted and cannot be recycled. The damage to the environment is more serious. Therefore, the use of closed circuit cooling towers is not very recommended.
- Stainless steel plate
Stainless steel plate has strong anti-corrosion and waterproof, and has high plasticity, toughness and mechanical strength, and is resistant to corrosion by acid, alkaline gas, solution and other media. It is an alloy steel that does not rust easily, but not absolutely rust-free. Stainless steel plate refers to a steel plate that is resistant to corrosion by weak media such as atmosphere, steam and water, while acid-resistant steel plate refers to a steel plate that is resistant to corrosion by chemically corrosive media such as acid, alkali, and salt. However, the cost is slightly more expensive, so the proportion of companies that choose this sheet is relatively low except for some specific industries.
Of course, in addition to the control of raw materials, maintenance is also very important, so it is recommended to maintain a little equipment - gentle cleaning: simple pressure cleaning (for sheet metal only), use ordinary cleaning tools, and use detergent or ammonia water for foundation once a year Cleaning, these methods are very helpful in keeping stainless steel clean and avoiding air pollution.
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