SHELL-AND-TUBE HEAT EXCHANGER Russian patent published in 2006 - IPC F28D7/16 

FIELD: heat exchange equipment, namely used in oil processing, chemical, gas, oil and power production industry branches.

SUBSTANCE: heat exchanger includes shell having bundle of heat exchanging tubes, inlet and outlet branch pipes for draining fluid from space between tubes, collector chamber connected with one end of shell and having branch pipes for inlet and outlet of tube fluid, collector tube wall and lengthwise heat insulated partitions mounted along axis of collector chamber and axis of shell. Lengthwise partition of shell is provided with sealing members in the form of packs of longitudinal bands arranged between partition and inner surface of shell symmetrically relative to lengthwise partition. In places where cross ends of sealing longitudinal bands adjoin to tube wall that is in trihedral angles, sealing units in the form of packs of bands or petal- or lug-shaped plates are mounted symmetrically relative to lengthwise heat insulated partition. Said packs are closely secured to tube wall; each band or plate is arranged in such a way that it adjoins to longitudinal bands and has camber to side of sealing longitudinal bands.

EFFECT: possibility for providing labyrinth seal of trihedral angle between inner surface of shell, sealing longitudinal bands and tube wall.

4 cl, 16 dwg