Patent RU-2610629-C1 (RU)
Title: Combined cooling tower with rational water recycling system
Inventor: Kochetov Oleg Savelevich
IPC: F28C1/06
Filed: 2015-12-14
Granted: 2017-02-14
Abstract: FIELD: power industry. 
     SUBSTANCE: combined cooling tower comprises a housing in the bottom of which a water-collecting bath is located designed in a shape of a housing of water-collecting panels, and above the bath an air intake device is installed, the device is esigned in a shape of louvres arranged in a perimeter of the housing, wherein an axial fan casing is installed in the top of the cooling tower housing, the casing is made of fiberglass and comprises a confuser located above a drip catcher coaxially to the cooling tower housing and rigidly connected thereto, and the confuser is coaxially connected to the cylindrical part, inside of which a fan impeller and a diffuser are located at a clearance, in the diffuser at least three adjustable extensions for installing the fan with built-in electric motor are located, wherein in the middle part of the cooling tower housing a water distribution system with the collectors of variable section and nozzles fixed on them are located, the nozzles spray water above a fill fixed in the housing by means of ribs, a water recycling system has separate hydraulic circuits for water treatment and consumption, wherein the bottom of the cooling tower housing have at least two tanks for water collection interconnected by the compensatory tube providing hydraulic independence of operating water treatment and consumption circuits, wherein one tank is connected with a pump which delivers cooled water in the cooling tower to a water user, which flows again through a valve on the pipeline to the second tank, from which the heated water is pumped through the filter and the valve is piped into the manifold with the nozzles placed in the upper part of the cooling tower housing, and in the area between the filter and the valve a hydraulic resistance filter control system is installed consisting of a pressure gauge and a valve, and each of the spraying nozzles includes a hollow housing with a nozzle and a central core, the housing is designed with a duct for liquid supply and comprises a coaxial bushing rigidly connected with the housing, in the lower part of the bushing a nozzle is fixed, the nozzle is designed in a shape of a cylindrical two-section bushing, the upper cylindrical section of which is coupled by a threaded connection with a central cylindrical core having a through inner central hole and mounted with an annular space relative to the inner surface of the cylindrical bushing and the annular space is connected to at least three radial ducts made in the two-section bushing connecting the space to an annulus formed by the inner surface of the bushing and the outer surface of cylindrical upper section, wherein the annulus is connected with the housing of the duct for liquid supply, and in the bottom part of the central cylindrical core a hollow conical swirler is fixed, a conical shell of the swirler is fixed by at least three spokes fixed at one end to the conical swirler in its upper part and at the other end in an annular groove located on the inner surface of the central cylindrical core. On the outer surface of the hollow conical swirler a screw thread is made. 
     EFFECT: more efficient use of secondary energy resources by increasing the active area of the cooling tower without increasing draft loss. 
     2 dwg