BOILER UNIT Russian patent published in 2000 - IPC

FIELD: thermal engineering. SUBSTANCE: boiler unit has several boilers equipped with revolving regenerative air heaters, stack-gas exhausters whose suction pipes are connected to gas outlet channels of air heaters and pressure pipes, to their air channels and to common steam outlet conduit; it also has gas blower whose suction pipe is connected to steam outlet conduit and its pressure pipe, to pressure flue connected to gas-and-air heater cases at their sealing areas. Such arrangement enables gas blower to shut off air leakage through steals to gas conduits of air heaters. EFFECT: reduced heat loss of boilers. 1 dwg