Abstract: Heat exchangers for use in heavy liquid metal coolant mediums that ensure reliable fixation and spacing of heat exchanger tubes. A first embodiment includes one supporting spacer grid having a cylindrical shell and two or more tiers of plates spaced apart at a preset gap, while the width of each plate is parallel to the shell axis. Ends of all plates are fixed to the shell such that plates of any tier are parallel to each other and located at the preset gap. Plates of different tiers are criss-crossed at an angle of 60 degrees along the shell axles and fastened together at the crossing points. Another embodiment includes three dividers which run through the cylinder axis; their ends are connected to the shell and are spaced at an angle of 60 degrees.

Abstract: A heat exchanger devices for operations in heavy liquid metal coolant mediums that ensures reliable fixation and spacing of heat exchanger tubes. A first option includes one supporting spacer grid 1 consisting of a cylindrical shell 2 and two or more tiers of plates 3 and 4 spaced apart at the preset gap, while the width of each plate lies within the plane which is parallel to the shell axis; ends of all plates are fixed to the shell such that plates of any tier are parallel to each other and located at the preset gap; plates of different tiers are criss-crossed at an angle of 60 degrees along the shell axles and fastened together at the crossing points. A second option includes three dividers which run through the cylinder axis; their ends are connected to the shell and are spaced at an angle of 60 degrees.