FIELD: heating systems.
SUBSTANCE: invention refers to heat engineering. Grate of cooled construction consists of steel rectangular-shaped pipes which are laid parallel at some distance from each other and which are welded on one end to inlet header, and on the other end - to outlet header at an angle allowing circulation of heat carrier (water) inside the above rectangular-shaped pipes, by means of which pipes are cooled from inside; between steel pipes, at some distance from each other, there welded are steel rod sections, being expansion joints which together with plane of rectangular tubes form a working surface of the device, and distances between steel rod sections form the holes through which air is supplied to solid fuel combustion area, and ash is discharged to boiler ash pit.
EFFECT: invention allows improving operating reliability, effective heating of heat carrier (water) circulating in operating tubes of grid with energy of burning solid fuel lying on grate surface.
6 dwg
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