STEAM GENERATOR

摘要

FIELD: power engineering; nuclear and thermal power stations. SUBSTANCE: steam generator has downcomer tubes of evaporation channels made in the form of Filde's tubes mounted through auxiliary tube sheet that functions at the same time as bottom of feedwater tank accommodating feedwater distribution header. Top part of tank is connected to steam-water space and its bottom is formed by mentioned auxiliary tube sheet. Such arrangement provides for uniform feedwater distribution among evaporation channels and to efficiently use boiler blowdown water. EFFECT: facilitated procedure of periodic chemical cleaning of evaporation channels from ferric oxide deposits. 1 dwg