FIELD: processes for assembling of shell-and-tube heat exchangers in power engineering, petroleum processing, petroleum chemical, chemical, gas and other branches of industry.
SUBSTANCE: method involves assembling carcass by joining with the help of tightening devices and bypass preventive strips of tube and spacer grates; assembling tube bundle by packing carcass with heat-exchanging tubes; fixing heat-exchanging tubes in tube grates while embedding their ends and assembling tube bundle with shell made in the form of cylindrical enclosure, with tube bundle assembling process being performed before assembling thereof with shell. Shell used is of the type consisting of at least two parts produced by cutting cylindrical enclosure along generatrix thereof. Transverse strips are welded to shell part at sites corresponding to position of spacer grates. Tube bundle is assembled with shell by mounting onto tube bundle of shell parts to thereby define hermetically sealed volume of intertubular space. Shell parts are welded to one another and to tube grates, said welding process being performed provided that welded joints are positioned between parts of shell along longitudinal axis of heat exchanger.
EFFECT: simplified assembling process and increased heat exchange efficiency of shell-and-tube heat-exchanger.
4 cl, 18 dwg, 1 ex
