DEAERATOR FOR HOT WATER FED BY INJECTOR Russian patent published in 2003 - IPC

FIELD: cleaning water from dissolved gases; industrial and public service heating systems. SUBSTANCE: proposed deaerator has body to which water to be deaerated is fed by injector head unit. Steam-and-air mixture thus formed is sucked through vapor condenser by means of water-and-air ejector. Supply of water for deaeration is regulated by mans of valve. Diameter of column in area of accumulation of water between minimum and maximum permissible levels is increased by 1.5 to 2 times as compared with main diameter of column. Distance between levels reaches 2 m. Body of valve performing function of regulator of flow section of water supply main is made in form of sleeve with circular inner bore and holes near sleeve bottom. Piston is made in form of thin-walled cylinder with two beads. Inner surface of body, beads and outer surface of piston form working cavities of valve; working fluid is fed to or drained from these cavities by means of electrohydraulic valves controlled by signals picked off column water level sensors. Under action of pressure of liquid in valve cavities piston is set in motion, thus opening or closing holes near sleeve bottom. Minimization of volumes of working cavities of valve makes it possible to reduce operating time of injector heads. EFFECT: enhanced efficiency. 2 cl, 2 dwg