FORWARD-FLOW STEAM GENERATOR FOR USE AT STEAM TEMPERATURES ABOVE 650-C Russian patent published in 2015 - IPC F22B3/00 

FIELD: power industry.

SUBSTANCE: invention relates to heat engineering and may be used in steam generators with forced flow for use at steam temperatures above 650°C. Steam generator with forced flow includes combustion chamber, channel of fuel gas connected to its upper edge, and peripheral walls around this channel. These walls are formed by pipes which transmit steam-water working medium. Combustion chamber includes at least one burner, and burners arranged downstream the heating surface are in the channel of fuel gas. In the area of combustion chamber part of peripheral walls is covered with at least one slabby heating surface, which size on the surface side is determined in such a way, that thermal absorption of peripheral walls and consequently their temperature is reduced to the level which allows manufacturing of peripheral walls from modified heat-resistant steel containing 2.25-2.5% of chrome, which doesn't require any consequent thermal treatment after welding; the slabby heating surface is made from martensitic steels containing 9-12% proportion of chrome, austenitic steel or nickel-based alloys.

EFFECT: improvement of structure.

7 cl, 2 dwg