PROCEDURE AND FACILITY FOR MIXING COOLANT IN FUEL ASSEMBLIES OF NUCLEAR REACTOR Russian patent published in 2010 - IPC G21C3/32 

FIELD: power industry.

SUBSTANCE: to equalise temperature and steam content of coolant in different cells and fuel assemblies in active zone disclosed here facility deflects flows by means of deflectors facilitating flows changed energy release and their mixing with neighbour flows, thus averaging corresponding temperature and steam content. Flow of coolant is deflected along perpendicular to base (8) of sector (7) in hexagonal fuel assemblies (1) in each out of six triangular sector (7) of cross section of each fuel assembly (1); also in adjacent sectors vectors of deflection of flows (9) are opposite directed relative to bases (8) of their own sectors. The facility for coolant mixing in active zone of the nuclear reactor consists of at least one grate (4) equipped with deflecting components (5). Incline of deflecting components (5) is made along perpendicular to base (8) of sector (7) in each out of six triangular sectors (7) of cross section of each fuel assembly (1). Also inclines of deflecting components (5) in each pair of adjacent sectors are made in opposite directions relative to bases (8) of their own sectors (7).

EFFECT: equalising parametres of coolant at zero summary torque.

5 cl, 6 dwg