Heat Exchanger for Cooling Towers

Abstract

The invention discloses a heat exchange device of a cooling tower, which comprises a splash mechanism and a filling mechanism. A nozzle group of three groups of nozzles, wherein the cooling plane formed by the first group of nozzles, the second group of nozzles and the third group of nozzles is perpendicular to the axis of the tower; the cooling plane includes a central area where the first group of nozzles is arranged, and where The inner area of ​​the second group of nozzles and the peripheral area where the third group of nozzles are arranged; the central area, the inner area and the peripheral area are all annular, and the central area, the inner area and the peripheral area are arranged in sequence in the tower radial direction, and the packing mechanism includes The first area, the second area and the third area are arranged in sequence in the radial direction of the tower. The first area and the second area correspond to the projection of the central area and the inner area in the axial direction of the tower respectively. The water spraying of the first area The density is less than the spray density of the second zone. The invention can improve the cooling efficiency of the cooling tower.

Description

technical field [0001] The invention belongs to the field of cold end equipment of a power plant, in particular to a heat exchange device of a cooling tower. Background technique [0002] Cooling towers are used to exchange heat between high-temperature circulating water and air in the tower to cool the high-temperature circulating water, and are widely used in power plants. [0003] According to the provisions of the "Energy Saving Evaluation and Energy Audit Manual" of thermal power plants, within the scope of the design permit, every 1.0°C decrease in the temperature of the circulating water cooled by the cooling tower can reduce the heat consumption of the generating set by 0.3-0.5%, and the coal consumption of power generation Can reduce 1.1g / (KWH). Since the heat transfer performance of the cooling tower determines the temperature of the circulating water entering the condenser, it has a vital impact on the safe and economical operation of the unit and even the entire...

AI Technical Summary

Problems solved by technology

[0007] However, in reality, the wind in the cooling tower is unevenly distributed. If the water is evenly distributed, the spraying water will be uneven, and heavy water areas, light water areas or no water areas will appear, resulting in the coexistence of excessive wind resistance and air short circuit, resulting in filler The area load changes aggravated, resulting in low cooling efficiency of the cooling tower

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