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What are the construction and installation requirements for counter current cooling towers?
Date:
2025-02-07
During the installation of a counterflow cooling tower, attention should be paid to fire prevention.
1. During the installation of a counterflow cooling tower, attention should be paid to fire prevention. It is strictly prohibited to use open flames such as welding (or gas cutting) in the tower body and its vicinity, and smoking by personnel present is also not allowed. If open flames are used, corresponding safety measures should be taken.
2. The foundation of the cooling tower should be kept horizontal, and the pillars should be perpendicular to the base surface, with a height difference of no more than ± 1mm between each base surface. The allowable difference in center distance is ± 2mm.
3. When assembling the tower body, the bolts should be symmetrically tightened, and forced twisting installation is not allowed. After assembly, there should be no water or air leakage.
4. The cooling tower feet and foundation embedded steel plates need to be directly positioned and welded, and the embedded steel plates should be horizontal and firm.
5. During transportation and storage of cooling tower components, heavy objects are not allowed to be placed on them, they must not be exposed to direct sunlight, and attention should be paid to open flames.
6. The inlet and outlet pipes, as well as the supplementary water pipes of the cooling tower, should be separately equipped with pipe supports to avoid transferring the weight of the pipes to the tower body.
7. Fan blades should be properly stored to prevent deformation. The motor and transmission components should be oiled and stored indoors.
8. To prevent debris from entering the nozzle and orifice, it should be carefully cleaned before assembly.
9. After the installation of the counterflow cooling tower, the pipes, packing surfaces, collection trays, and other dirt and debris inside the tower should be cleaned, and the system should be washed.
10. Requirements for wind turbine assembly
a、 The radial clearance between the fan blade tip and the inner wall of the wind duct should be kept uniform, with a clearance of 0.0075D (D is the fan diameter), but the minimum clearance should not be less than 8mm;
b、 The installation angle of the blades should be consistent;
c、 The fan junction box should be sealed and corrosion-resistant; The lead wire must be bent downwards to prevent water and steam from entering the box;
d、 Check if the fan rotates smoothly and if the sound is normal. The blades should rotate clockwise when viewed from the top of the tower;
e、 During trial operation, if the current exceeds the rated current, the machine should be stopped immediately and should be controlled at the rated value of 0.90-0.95;
f、 After installation, cover the fan with an oilcloth to prevent dirt from entering and exposure to sunlight and rain.
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