Reconstruction method and structure for reconstructing wet-type cooling tower into dry-type cooling tower in power plant

Abstract

The invention discloses a reconstruction method and structure for reconstructing a wet-type cooling tower into a dry-type cooling tower in a power plant. The reconstruction method comprises the following steps: (1) reserving a cooling tower body of an existing natural ventilation wet-type cooling tower; (2) building a side wall and a top plate on a bottom plate of a bottom water collection tank ofthe natural ventilation wet-type cooling tower to form a closed water storage tank; integrally laying a waterproof layer on the inner surface of the water storage tank to form a closed underground water tank; (3) distributing an air cooling system underground pipe network inside or outside the natural ventilation cooling tower; (4) vertically distributing newly added air cooling heat exchangers on an outer periphery of the cooling tower body; and (5) establishing an extension platform between the top of the air cooling heat exchangers and the cooling tower body, and supporting the extension platform on vertical supporting columns outside the cooling tower body. According to the reconstruction method of the invention, an existing civil construction facility of an old tower is sufficientlyutilized, no new air cooling tower is built, and the civil construction cost is low; and the effective height of an air inlet of the cooling tower can be maximally increased, and the air resistance can be reduced.

Description

technical field [0001] The invention belongs to the field of industrial cooling design, and relates to a transformation method and structure for changing a wet cooling tower into a dry cooling tower in a power plant. Background technique [0002] For the purpose of saving water or limited by water policy, some power plants using wet secondary circulation cooling system put forward the transformation requirement of wet cooling system to air cooling system. In these power plants, the unit has often been in operation for many years. If the existing natural ventilation wet cooling tower is removed and a dry cooling tower is newly built, there will be problems such as inconsistency between the service life of the new cooling tower and the existing unit equipment, and poor economic efficiency. It is often desirable to continue utilizing existing natural draft wet cooling towers. [0003] Compared with the specially designed air cooling tower, the vertical height of the air inlet ...

AI Technical Summary

Problems solved by technology

In these power plants, the unit has often been in operation for many years. If the existing natural ventilation wet cooling tower is removed and a dry cooling tower is newly built, there will be problems such as inconsistency between the service life of the new cooling tower and the existing unit equipment, and poor economic efficiency. It is often desirable to continue utilizing existing natural draft wet cooling towers

[0003] Compared with the specially designed air cooling tower, the vertical height of the air inlet of the traditional natural ventilation wet cooling tower is obviously much smaller. If it is directly used as an air cooling tower, the air resistance is relatively large due to the limitation of the total area of ​​the air inlet

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