STEAM BOILER Russian patent published in 1999 - IPC

FIELD: power engineering. SUBSTANCE: steam boiler includes water-walled symmetrical furnace with baffle walls, upper and lower drums located along longitudinal axis of boiler, one after other. Lower drum is shortened as compared with upper one and is connected with additional central header. Baffle walls are of double-row construction. Boiler furnace is sectional. Mounted in center of furnace is multi-row baffle wall with two rows of windows which is used to connect central header with upper drum located above furnace. Baffle wall with two rows of windows is made from rows of tubes of different geometric configuration. Lower front header is solid. Diameter of upper drum mounted above furnace is reduced. EFFECT: increased heat extraction in furnace chamber; reduced usage of metal. 8 cl, 7 dwg