| 摘要 |
FIELD: manufacture of wooden plates and laminate plastics materials. ^ SUBSTANCE: plate includes two mutually joined semi-plates having arranged in opposite lengthwise semicircular grooves forming lengthwise opening in plate for introducing longitudinal tubes open at both ends. End portions of longitudinal tubes pass through openings of plugs, they are welded around by two annular seams in each plug and protrude from plugs. Distributing members are welded along contour to plugs at side of open ends of tubes; said distributing members have inner lengthwise and crosswise ducts for distributing heat transfer agent in tubes. End portions of tubes protruding from plugs are introduced into turnings of lengthwise ducts of distributing members. Diameter of lengthwise ducts is equal to inner diameter of lengthwise tubes and diameter of turnings is equal to outer diameter of lengthwise tubes. Butts of semi-plates are welded through on their lateral faces by intermittent seams with possibility of free discharge of heat transfer agent if one of tubes breaks. Semi-plates may be joined one to other by welding or mechanically. ^ EFFECT: increased useful life period, improved repairing capability of plates. ^ 2 cl, 2 dwg |
