HEAT-INSULATING INSERT AND HEAT PROTECTION DEVICE FOR HEAT EXCHANGERS Russian patent published in 2019 - IPC F28D1/00 F28F9/13 F28F9/06 

FIELD: heat exchange.

SUBSTANCE: invention relates to heat exchange equipment and can be used in chemical, petrochemical and other industries. Heat-insulating insert for heat exchangers, which is a branch pipe, which is inserted into heat exchange tubes with a gap and to which is attached a plate, parallel to the tube plate, and to ensure a uniform gap on the outer wall of the branch pipe there are projections, and plate is made in form of washer with edges bent towards tube grid. Branch pipe can be made of thin resilient sheet material and have longitudinal section, which ensures the branch pipe retaining in heat exchange tubes due to elastic forces. On part of branch pipe extending beyond tube grid there may be cuts and bent parts that hold the washer and simultaneously play the role of swirler. Thermal protection device includes a heat shield in the form of a plate with holes arranged in accordance with the arrangement of holes in the tube plate, which is installed on the tube grid and is retained by heat-shielding inserts.

EFFECT: providing effective heat protection of tube grids of heat exchangers using heat-insulating inserts, having simple design, low material consumption and convenient during installation and dismantling.

4 cl, 4 dwg