| 摘要 |
FIELD: power industry.SUBSTANCE: fan cooling tower includes a housing, a spraying device, a liquid collecting tank and a fan. The housing consists of two parts - upper part including a sprinkler and a drop separator, between which there located is a header of the spraying device with atomsiers and the lower part in which a water collecting tank is located and intended for collection of cooled water with a fan installed on it; at that, the housing is made from stainless steel sheets, and in the water collecting tank there is a diffuser that represents the past of the housing and is connected to the fan provided with a plastic impeller and a multi-speed electric motor allowing during operation, depending on weather conditions, to change the cooling tower capacity owing to changing the air flow rate, and the drop separator is provided with triple corrugation, where the air flow changes the direction for three times and as a result, considerable reduction of drop entrainment is achieved. Each of the atomisers of the spraying device includes a housing, a nozzle and an insert-swirler located coaxially to it, and in the nozzle there is a divergent channel for liquid supply to a cylindrical hole that is axisymmetrical to the housing and is smoothly continued to a shaped hole coaxial to it and made in the form of a convergent-divergent nozzle, and in the housing cylindrical hole there installed axisymmetrically to it is a cylindrical insert-swirler having external peripheral screw-shaped threaded channels; at that, along the insert-swirler axis there is a central axial hole with screw thread on inner surface that is reverse to thread direction of channels; at that, insert-swirler is installed in the housing through elastic gaskets and pressed with a nozzle by means of a housing-nozzle threaded connection.EFFECT: improving the cooling tower operating efficiency.3 dwg |
