SPIRAL-COIL HEAT EXCHANGER WITH INSERTS BETWEEN JACKET AND LAST TUBULAR LAYER Russian patent published in 2020 - IPC F28F9/00 F28D7/02 

FIELD: heat exchange.

SUBSTANCE: disclosed invention relates to heat exchanger (1) intended for indirect heat exchange between first fluid (S) and at least one second fluid (S') and having shell (10), extending along longitudinal axis (z) and surrounding space (M) inside shell for receiving first fluid (S), and tube bundle (2) located in said space (M) and comprising pipes (20) for receiving at least one second fluid (S'), wherein tubes (20) form several tubular layers, jacket (3) located in said space (M) and surrounding tubular bundle (2), which is the most distant from the center, in radial direction (R), tube bundle (2) tubular layer (200), wherein between jacket (3) and most distant from center tubular layer (200) there are inserts (60) extending along longitudinal axis (z), between each two adjacent, in circumferential direction (U) of jacket (3), inserts 60), as well as between jacket (3) and uppermost tubular layer (200) there is intermediate space (M'). According to the invention, in the intermediate space (M'), flow barrier (300) is located, configured to block or prevent flow of first fluid (S) in corresponding intermediate space (M') at least on segment of corresponding intermediate space (M') extending along longitudinal axis (z).

EFFECT: spiral coil heat exchanger with inserts between the jacket and the last tube layer is proposed.

15 cl, 3 dwg