COMBINED COOLING TOWER WITH RATIONAL SYSTEM OF WATER REUSE Russian patent published in 2012 - IPC F28C1/06 

FIELD: power engineering.

SUBSTANCE: combined cooling tower comprises a casing, in the lower part of which there is a water-collection bath made as following the casing shape from water-collecting shields, and above the bath there is a device for air intake made in the form of louvre grids arranged along the perimetre of the casing, besides, in the upper part of the cooling tower casing there is a casing of an axial fan made of glass plastic and comprising a confusor arranged above a drop catcher, coaxially to the cooling tower casing, and rigidly connected to it, besides, a cylindrical part, inside of which there is a fan's impeller installed with a gap and a diffuser, in which at least three controlled braces are fixed to install a fan with an inbuilt electric motor are coaxially connected to the confusor. At the same time in the middle part of the cooling tower casing there is a water-distribution system with headers of alternating section and nozzles fixed on them, spraying water above an irrigation device fixed in the casing by means of stiffening ribs, the system of water reuse has separate hydraulic circuits of water treatment and consumption, at the same time in the lower part of the cooling tower casing there are at least two tanks for water collection, which are connected to each other by means of a compensation pipe, providing for hydraulic independence of operating water treatment and consumption circuits. At the same time one tank is connected to a pump, which supplies water cooled in the cooling tower to a consumer, which again arrives via a valve along a pipeline into the second tank, from which heated water with a pump via a filter and a valve is sent along a pipeline to a header with nozzles, placed in the upper part of the cooling tower casing, and in the section between the filter and the valve a system is installed to monitor hydraulic resistance of the filter comprising a pressure gauge and a valve.

EFFECT: invention makes it possible to increase efficiency of usage of secondary energy resources by increasing the value of the active area of cooling towers without increasing aerodynamic resistance.

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