| 摘要 |
1. System for the detection and location of leakage in the cluster of tubes in a steam genrator, having at leat one tube plate (1) in which the tubes of the cluster (2) are fixed according to a regular lattice such that they traverse all or part of the thickness of the tube plate (1) to open on one side of the tube plate (1) in a zone constituting a water box or a steam collector, and such that they penetrate, on the other side of the tube plate (1) into a zone containing an exchange liquid providing the heat of evaporation, with which the tubes (2) are in contact at their outer surface, characterized by the fact that it includes : - for each of the tubes (2), in a zone in which this tube (2) is inside the tube plate (1), two annular spaces (12, 14) coaxial with the tube (2) and spaced along its length, such that the annular spaces (12, 14) relating to all the tubes (2) of the cluster constitute two systems situated in two different zones spaced according to the axial direction fo the tubes (2), - two systems of connecting passages (15, 17) between the annular spaces (12, 14) of the tubes (2) of a same row corresponding each to one system of annular spaces (12, 14), the passages (16 or 17) of one system being entirely isolated from one another, all parallel, and disposed in one direction of the lattice of the tubes (2), - and fluid detectors (19, 21) disposed on the outside of the tube plate (1) and associated each with one of the passages (15, 17), such that each passage is connected to a detector at least one of its extremities, - each of the junction passages (15, 17) connects the annular spaces (12, 14) of a single row of tubes and the passages (15, 17) of the two assemblies are oriented in two different directions. |
