HEAT EXCHANGER Russian patent published in 2020 - IPC F28D7/00 

FIELD: heat exchange.

SUBSTANCE: heat exchanger comprising a vertical housing with supply and discharge branch pipes, upper and lower detachable covers, tube bundle installed in middle part of housing with formation of peripheral cavity and made in form of heat exchange tubes wound on vertical mandrel of upper and lower horizontal grids, fixed by appropriate ends of mandrel, outer vertical jacket, lower section of which is connected to lower grate, upper part of casing is made with possibility of longitudinal movement relative to upper grate, wherein the heat exchanger covers are attached by means of a flange connection, and the seal of the flange connection is made with at least two O-rings of different diameter with formation of an interlacing space.

EFFECT: invention relates to heat engineering and can be used in heat exchangers of nuclear power plants.

1 cl, 2 dwg