A movable flow guiding device for adjusting the internal flow field of an indirect air cooling tower
A flow guide device and cooling tower technology, which is applied in the field of flow and heat exchange of cooling towers between power plants, can solve the problems of airflow damage of the radiator at the bottom of the tower, uneven air intake of the radiator, and unsmooth airflow outflow, etc., and achieve the operation mode Flexible, simple structure, balanced heat transfer effect
Active Publication Date: 2020-03-24
CHINA ACAD OF AEROSPACE AERODYNAMICS
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Problems solved by technology
[0004] In winter, the northwestern region is very windy, and the instantaneous wind speed can reach more than 20m / s. The crosswind mainly affects the flow state inside and outside the intercooling tower from two aspects. One is that the airflow around the radiator at the bottom of the tower is damaged, causing the radiator to flow The wind is uneven; the second is the impact of the side wind on the top of the tower on the outlet airflow, which makes the airflow not smooth
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[0024] The present invention from indirect air cooling tower (hereinafter referred to as indirect cooling tower) (as figure 1 Based on the optimal design method of the flow field in the tower (shown), relying on the principle of ejection, a movable flow guide device for the flow field inside the intercooling tower is designed, which can effectively restrain the flow in the tower under the environment of high wind speed (greater than 8m / s) Inhomogeneity and unbalanced heat transfer problems, to achieve efficient use of intercooling tower heat exchangers.
[0025] According to the flow field structure analysis of the internal and external flow field of the intercooling tower, a shape of the diversion surface is designed. According to the numerical calculation results of different ambient winds, the effectiveness of the shape of the diversion surface is verified in turn, and it is adjusted and perfected to obtain a The shape of the diversion surface is universal for different env...
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A movable flow guiding device for improving the flow field inside an indirect cooling tower comprises an inside-tower flow field flow guiding face and a bottom supporting structure; the bottom supporting structure supports the flow guiding face and adjusts the inclination angle of the flow guiding face; the flow guiding face is opposite to the air direction of the external environment of the indirect cooling tower; the flow guiding face is used for hindering the cross ventilation phenomenon of environment air in the indirect cooling tower; and by means of the ejection principle, the ventilation quantity of a cooling unit on the leeside is increased, the cooling efficiency is improved, and the water returning temperature of cooling water is lowered. The influences of the environment air onflowing in the tower are relieved as a whole.
Description
technical field [0001] The invention relates to a flow guide device for improving the internal flow field structure of an intercooling tower and improving the heat exchange efficiency of an intercooling tower under a strong wind environment, and belongs to the technical field of flow and heat exchange of an intercooling tower in a power plant. Background technique [0002] The distribution of water resources in my country is uneven, and the water and land resources do not match. my country's coal reserves are mainly distributed in the northern regions, with Shanxi, Shaanxi, Inner Mongolia and other provinces having the most abundant reserves. The Shanxi, Shaanxi and Inner Mongolia regions concentrate 60% of China's coal resources. Water resources in these areas are extremely scarce, and the use of air-cooling systems solves this contradiction very well. The air cooling system adopts a closed circulating water system, and the loss of cooling water is very small. [0003] Th...
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IPC IPC(8): F28F25/12
CPCF28F25/12
Inventor 李国良周伟江陈广强田川王铁进
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS