HEAT EXCHANGER Russian patent published in 2010 - IPC F28D7/10 

FIELD: heating systems.

SUBSTANCE: invention refers to heat engineering and can be used as high heat-stressed heat exchanger of nuclear power plant with hydraulic scheme of two-sided heat exchange of heated liquid. Heat exchanger contains external, intermediate, internal tubes which are installed coaxially one in the other with an annular gap, external one of which is fixed in tube sheet, upper and lower reducers with overflow openings; at that, openings of upper reducer are interconnected with annular gap between intermediate and internal tubes, and annular gap between external and intermediate tubes is interconnected through openings of lower reducer to internal tube; central tube is installed along the axis of internal tube with annular gap and the upper end of which is taken out beyond external one and which is fixed in its tube sheet, and its lower end is interconnected with overflow openings of lower reducer.

EFFECT: design of heat exchanger of proposed type will allow using it as module of steam-generating nuclear power plant of submersible type, which meets the requirements for reliability, manufacturability, erection at high specific heat stresses of the occupied volume of nuclear power plant.

3 dwg