COUNTERFLOW PLATE HEAT EXCHANGER Russian patent published in 2004 - IPC

FIELD: heat engineering, applicable in any branches of industry for heating or cooling liquid or gaseous media, for heating of air of a gas-turbine plant by the heat of exhaust gases inclusive.

SUBSTANCE: the counterflow plate heat exchanger has a body and a stack of corrugated heat-transferring plates, connected in pairs at peripheral edges and flanges for supply and elimination of the heated heat-transfer agent, forming a dispensing and collecting headers and tightened with the aid of clamps, the stack is placed in a shell, providing for sealing of the heating heat-transfer agent, supply and elimination of heat inclusive, and the load as a result of the difference of pressures of the heat-transfer agents perceives the body accommodating the shell; the body is made of two power plates, positioned in one or each plate are the supply header and heat dispensing header, and two body covers, the power plates have stiffening ribs, and heat insulation is placed in the plates, which is covered by a case, the covers with heat insulation are attached to the body power plates for detachment or permanently and serve as clamping components, the shell is made in the form of two flat sheets with holes joined to the stack of corrugated plates at the flanges, and two side sheets, the bent aside edges of the sheets are joined to the flat sheets making up a compensator, the stiffness of the compensator is increased by an additional member fastened on the flanges of the plates.

EFFECT: enhanced service life and efficiency.