Natural ventilation wet and dry combined cooling tower with air precooling and winter antifreeze functions
An air precooling and natural ventilation technology, applied in the field of cooling towers, can solve the problems of reduced heat exchange temperature difference, increased back pressure of power plant units, and decreased unit economy, so as to enhance suction, save electric energy, and solve water volume problems. Reduced effect
Inactive Publication Date: 2018-05-25
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology
In summer, when the dry bulb temperature of the ambient air is high, the heat transfer temperature difference between the above two air-cooling systems and the ambient air decreases, resulting in an increase in the back pressure of the power plant unit and a decrease in unit economy
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[0043] The present invention will be further described below in conjunction with the drawings and specific embodiments. It should be emphasized that the following description is only exemplary, and is not intended to limit the scope of the present invention and its application.
[0044] Such as Figure 1-Figure 2 Shown is a natural ventilation dry-wet combined cooling tower with air pre-cooling and winter anti-freezing functions. The tower 1 adopts a hyperbolic structure and is supported on the ground by a supporting structure 6. The supporting structure 6 is an "X"-shaped column or "human ”-Shaped column; the dry-cold section and the wet-cooled section are integrated in the tower body 1 along the vertical direction, and the dry-cooled section is located above the wet-cooled section, making the installation height of the dry-cooling section equipment higher than that of the traditional indirect air-cooling dry-cooling section. The dry-cooling section includes a dry-cooling cooli...
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The invention relates to a natural ventilation dry-wet combined cooling tower with air precooling and winter freeze preventing functions. A dry-cooling section and a wet-cooling section are integrally arranged in the cooling tower in the perpendicular direction; the dry-cooling section comprises a dry-cooling unit, and a cooling triangle is arranged for wall-type heat exchange between air and circulating water; the wet-cooling section sequentially comprises a water distribution area, a packing area, a rain area and a water collecting tank from top to bottom, and an air-circulating water mixed heat exchange mode is adopted. A water side flowing system comprises a circulating water distribution system and a precooling system. According to the cooling tower, the operation modes including the single dry-cooling operation mode, the single wet-cooling operation mode, the dry-wet combined serial operation mode, the dry-wet combined parallel operation mode and the precooling dry-cooling operation mode of the cooling tower can be flexibly selected according to the actual conditions such as the local weather conditions and the on-site working conditions, therefore, continuous, safe and efficient operation of the cooling tower is guaranteed, water can be saved, the low tower outlet water temperature can be achieved at high temperature in summer, and the freeze problem of the dry-cooling unit can be effectively prevented in winter.
Description
Technical field [0001] The invention belongs to the technical field of cooling towers, and particularly relates to a natural ventilation dry-wet combined cooling tower with air pre-cooling and winter anti-freezing functions. Background technique [0002] In the production fields of electric power, petrochemical, metallurgy, and pharmaceuticals, the heat generated by many production links must be released in time to ensure the continuous and efficient operation of the production process. [0003] Take thermal power plants as an example. Condenser is a device that condenses steam turbine exhaust into liquid water. Its cooling effect, including cooling rate and condensing temperature, is an important indicator for evaluating the economic efficiency of thermal power plants and directly related to the power generation efficiency of the generator set . The excellent cooling efficiency of the condenser can promote the efficient use of energy and promote energy saving and emission reducti...
Claims
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IPC IPC(8): F28C1/00F28F25/02F28F25/08
CPCF28C1/00F28F25/02F28F25/08
Inventor 陈林黄显威黄钰琛杨立军杜小泽杨勇平
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)