AUTONOMOUS STEAM-AND-WATER BOILER Russian patent published in 2000 - IPC

FIELD: generation of steam and hot water for repair of well equipment at low ambient temperatures. SUBSTANCE: boiler has steam-and-water cavity with furnace built in it. Furnace is made in form of torus changing to chimney with expansion tank mounted on chimney with liquid and stabilizing cavity located in upper portion of tank; liquid cavity is connected with steam-and-water cavity of boiler by means of feed pipe brought to bottom of steam-and-water cavity for forming hydraulic seal at height H, which makes it possible to maintain the required level of water. Upper portion of stabilizing cavity is brought in communication with cavity of chimney by means of holes which are shifted vertically, thus making it possible to given warning on emergency state of boiler. EFFECT: enhanced efficiency and reliability. 1 dwg