Air cooling tower and indirect air cooling system

Abstract

The invention discloses an air cooling tower. The air cooling tower comprises a tower body and a flow guiding device; the flow guiding device comprises a central flow guiding part and flow guiding plates, the central flow guiding part is arranged at the center of the bottom of the tower body, a flow guiding face is formed in the circumferential direction of the central flow guiding part, the flow guiding plates comprise eight inner flow guiding plates and eight outer flow guiding plates, the eight inner flow guiding plates are connected to the flow guiding face of the central flow guiding part in the circumferential direction in an evenly-distributed mode, the eight outer flow guiding plates and the eight inner flow guiding plates are arranged outside the tower body in a one-to-one correspondence mode in the circumferential direction, and channels communicating with the flow guiding face are formed between every two adjacent outer flow guiding plates and between every two adjacent inner flow guiding plates. According to the air cooling tower, by additionally arranging the flow guiding device, wind field energy can be reasonably utilized, the ventilation quantity in the air cooling tower can be increased, influences of a negative pressure zone on an air flow field can be reduced, and then adverse effects of environmental wind on running of an indirect air cooling system and the heat exchange performance of an air cooling radiator are weakened. The invention further discloses the indirect air cooling system.

Description

technical field [0001] The invention relates to the technical field of thermal power generation equipment, in particular to an air cooling tower and an indirect air cooling system. Background technique [0002] The indirect air cooling system is a system that uses ambient air as the cold source and closed circulating water as the intermediate medium to transfer the heat of the exhaust steam of the steam turbine to the circulating water, and the closed circulating water is transferred to the atmosphere through the air-cooled radiator, mainly including condensing steam The air cooling tower consists of a tower body and an air cooling radiator. The condenser, the circulating water pump and the radiator are connected in series to form a circulating water loop. The circulating water heated in the condenser is pumped by the circulating water. To the air-cooled radiator, heat exchange with the air in the air-cooled radiator, the cooled circulating water returns to the condenser to ...

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Problems solved by technology

[0003] When working, in the state of static wind, the ambient air flows in horizontally. After being heated by the radiator, it turns upwards in the air cooling tower, and a negative pressure backflow phenomenon will appear near the concrete wall within a certain height of the air inlet of the air cooling tower, forming a local flow. The dead zone leads to high air temperature in this area, which will affect the heat exchange effect over time; in the state of ambient wind, the windward and leeward sides of the air-cooling tower have uneven air intake, and the pressure on the windward side of the air-cooling tower increases and the pressure on the leeward side decreases. , are prone to backflow phenomenon, the air flow on the windward side of the air-cooled radiator increases, and the heat exchange capacity is enhanced, while on the leeward side, the radiator can exchange heat with the help of the air-cooling tower's suction, but due to the suppression of the horizontal airflow on the air-intake side of the tower Effect, the air flow into the radiator is reduced, the heat transfer capacity is weakened, the air cooling tower is located in the area on both sides of the windward side and the leeward side, the air flow into the radiator is lower, and the heat transfer capacity is worse

Adversely affect the operation of the indirect air-cooled system and the heat transfer capacity of the air-cooled radiator

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