ECHANGEUR DE CHALEUR A TUBES DROITS PERFECTIONNE DANS LEQUEL CIRCULE UN FLUIDE A TEMPERATURE ELEVEE ET VARIABLE.

摘要

The outer casing of the heat exchanger is connected, at one of its ends (5), to the tube plate (32) of a manifold (9) via a flexible deformable element (35) such as a bellows. The bellows (35) makes it possible to take up the differential expansions of the bundle (3) and of the casing (2) without leading to stresses which could have a detrimental effect on the mechanical behaviour of the heat exchanger. The heat exchanger also comprises means (40) for protecting the tube plate (32) of the manifold (9) for introducing an exchange fluid into the tubes of the bundle (3). The heat exchanger may be steam generator or a fast-neutron nuclear reactor in which the feed water constituting a first fluid is heated and vaporised by liquid sodium constituting a second exchange fluid.