JET APPARATUS FOR STEAM GENERATOR PGV-1000 Russian patent published in 2013 - IPC F22D7/08 

FIELD: power engineering.

SUBSTANCE: jet apparatus comprises a casing made as cylindrical, installed vertically in a drop channel of a steam generator and connected with a lower part to a guide deflector, a cylindrical nozzle sunk for the half of its length into the upper part of the casing to create a circular gap between the cylindrical nozzle and the casing for supply of steam generator feedwater into the casing from the area under a perforated sheet, narrowing channels arranged inside walls of the cylindrical nozzle and connected via supply tubes with a distributing header with the possibility of feedwater supply from narrowing channels into the casing at the angle of 75 degrees to the vertical line, at the same time the upper cut of the cylindrical nozzle is connected with the perforated sheet, which lets through the steam generator feedwater from the area above the perforated sheet into the upper part of the cylindrical nozzle and further into the casing.

EFFECT: increased multiplicity of feedwater circulation at a hot side of a steam generator resulting in increased steam productivity with preservation of its geometric dimensions.

2 cl, 3 dwg