FIELD: heating systems.
SUBSTANCE: in heat exchanger containing tubes and at least one header including at least one tube sheet, tube sheet includes pass flanges in which tubes are installed; each pass flange of tube sheet is enveloped with side surface passing along perimetre and adjoined to pass flange at blunt angle; at that, edges of side surface change into pass flange on one side at blunt angle, and on the other side, they change also at blunt angle into upward bent end section of tube sheet, thus forming S-shaped section of tube sheet; at that, side surface of two adjacent pass flanges border on each other, thus forming a chute.
EFFECT: decreasing mechanical loads without additional material consumption.
10 cl, 5 dwg
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