SUPPORT GRID FOR FUEL ASSEMBLY OF NUCLEAR REACTOR Russian patent published in 2011 - IPC G21C3/32 

FIELD: power industry.

SUBSTANCE: support grid for fuel assembly of nuclear reactor is made in the form of perforated plate with round holes. Round holes are located along triangular grid. Some part of round holes is designed for tips of fuel cells to be installed in them. The other part of round holes is designed for arrangement of guide channels or carrying pipes and with hole for heat carrier passage. Each hole for heat carrier passage is formed with three arcs of circles of R radius, which are concentric to three neighbouring round holes and conjugated with arcs of circles, the radius of which is within S/2 - R to S/3^0.5 - R, where S - distance between centres of round holes; at that, holes for heat carrier passage are uniformly located in threes around round holes.

EFFECT: invention allows increasing strength and rigidity of produced grids and allows using high-capacity casting, laser and water-abrasive cutting technologies.

3 cl, 2 dwg, 1 tbl