A super-large wet cooling tower adopting dry and wet mixed cooling mode in rainy area

Abstract

The invention discloses an ultra-large wet cooling tower with a dry-wet mixed cooling mode adopting in a rain area. The lower part of the ultra-large wet cooling tower is sequentially provided with apacking area and the rain area from top to bottom, the packing area is an area with filler added, and the rain area is an area formed by the packing area and the tower bottom of a cooling tower; and aplurality of shunting plates are arranged in the rain area, each shunting plate is of a plate-shaped structure, one end of each shunting plate is connected to the wall of the ultra-large wet coolingtower, the other end of each shunting plate points to the center of a radial section of the ultra-large wet cooling tower, the two sides of each shunting plate are obliquely arranged, and all the shunting plates are in rotary symmetry about the radial section center of the ultra-large wet cooling tower. The wet cooling rain area is divided into a dry area and a wet area, so that the dry-wet mixedcooling mode is formed, so that the ventilation resistance of the rain area is reduced, the gas-water flow field uniformity in tower is enhanced, the heat transfer and mass transfer performance of therain area and the packing area are enhanced, so that the cooling efficiency of the ultra-large wet cooling tower is improved.

Description

technical field [0001] The invention relates to a super-large natural ventilation wet cooling tower equipped with a thermal power station or a nuclear power plant, in particular to a super-large wet cooling tower adopting a dry-wet mixed cooling mode in a rainy area. Background technique [0002] The statements herein merely provide background information related to the present invention and may not necessarily constitute prior art. [0003] Natural ventilation wet cooling tower is one of the main cold-end equipment of large thermal power plants (and some nuclear power plants). Its internal area is generally divided into water distribution area, filling area and rain area. The cooling performance of the wet cooling tower directly affects the vacuum of the condenser, which in turn affects the efficiency of the generator set. The diameter of the bottom of the ultra-large wet cooling tower is generally more than 130 meters, and it is difficult for the external cold wind to rea...

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Problems solved by technology

The inventor of the present invention found that although the air intake around the tower tends to be uniform by using this method, the raindrop ventilation resistance in the rain area still exists.

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