Large-scale dry-wet mixed cooling tower with annular packing arrangement and thermal power plant cooling system

Abstract

The invention relates to a dry and wet blended large-scale cooling tower with filler being annularly arranged and a cooling system of a thermal power plant and belongs to the field of energy and power engineering. The cooling tower comprises a cooling tower drum. The lower side of the cooling tower drum is sequentially provided with dry area air inlet cooling units, a dry area in-tower perpendicular cooling unit, a wet area filler area and a wet area hollow area from outside to inside. A dry area in-tower horizontal cooling unit is arranged on the upper portion of the dry area in-tower perpendicular cooling unit. The top of the wet area hollow area is provided with a cover plate. The bottom of the wet area hollow area is a wet type water collecting pool. A water distributing area and the filler area of the wet area are both annular. By the adoption of the dry and wet blended large-scale cooling tower with the filler being annularly arranged, because the brand new structure is designed, through the cooling units of different structures in the dry area, the annular-structure filler area and the annular-structure water distributing area, the wind resistance is greatly lowered, the ventilation cooling effect is guaranteed, and the heat exchange performance of the wet area is improved.

Description

technical field [0001] The invention relates to the field of energy and power engineering, in particular to a dry-wet mixing large-scale cooling tower and a thermal power plant cooling system arranged with annular packing. Background technique [0002] In my country's coal-rich and water-poor areas, such as Inner Mongolia, Gansu, Shanxi, Xinjiang and other places. Due to the lack of water resources in these areas, air-cooled thermal power generating units are generally used. Compared with wet cooling units, air cooling units generally need to be equipped with small wet cooling towers or mechanical ventilation wet cooling towers for the following reasons: [0003] 1. Small steam turbines are generally driven by steam. The change of ambient temperature will cause the vacuum of the main steam turbine to decrease. If the small steam turbine shares the condenser with the main steam turbine, the power of the small steam turbine is easily affected by the ambient wind. Therefore,...

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Problems solved by technology

[0005] To sum up, during the design and construction of air-cooled units, they are generally equipped with air-cooled condensers and dry cooling towers (also called air-cooling towers), plus small natural ventilation wet cooling towers or mechanical ventilation wet cooling towers, and there are components with the same functions Disadvantages such as repeated design, large footprint, complex system, and heavy maintenance workload

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