METHOD FOR MANUFACTURING INTERMEDIATE HEAT EXCHANGE UNITS AND(OR) UPPER HEAT EXCHANGE UNIT OF HEAT EXCHANGE APPARATUS AND METHOD FOR MANUFACTURING LOWER HEAT EXCHANGE UNIT OF HEAT EXCHANGE APPARATUS

摘要

FIELD: power machine engineering, possibly manufacture of heat exchange apparatuses, namely heat exchange units of modular or modular-sectioned heat exchange apparatuses of regenerative air heaters.;SUBSTANCE: method of manufacturing intermediate, upper and lower heat exchange units comprises steps of making in manufacturing stations blanks of shells of housings of manifolds, tubes, tube walls and members of unit carcass; bending tubes for forming multi-way bent in plane tubes; pressurizing bent tubes; assembling manifolds for supplying and discharging air and welding-in tube walls to them; mounting unit carcass and manifolds; packing tube bundle and again pressurizing tubes. Unit carcass and manifolds for supplying and discharging air are mounted in fixture at installing on plate fixture of portal frame with struts and upper beam, additional struts with detachable beams provided with coordinate members with supporting vertical surfaces and additional struts for fixing mounted struts of unit carcass. At manufacturing lower heat exchange unit, two-step plate of fixture is used. At mounting manifolds for supplying and discharging air, their ends are fixed along contours and three-dimensional position of housing of each manifold is fixed by means of coordinate and supporting discs secured from lower side of detachable lower beam of portal frame coaxially to central vertical axes of manifolds.;EFFECT: enhanced effectiveness of manufacturing process.;16 cl, 16 dwg