FUEL ASSEMBLY OF A NUCLEAR WATER-WATER ENERGY REACTOR

摘要

The utility model relates to the field of atomic energy and can be used in nuclear reactors of the WWER type. The technical result of the utility model is the guaranteed maintenance of the working temperature of the surface of the fuel rods by mixing the coolant in the horizontal direction. To achieve this, a fuel assembly of a nuclear pressurized water reactor containing rod fuel rods installed in a frame consisting of guide tubes and spacer grids is proposed, while a screw with holes for the fuel rods is located in the upper part of the assembly in a hexagonal case. The screw is made of a zirconium alloy twisted into a spiral, the outer part of which has the shape of a hexagon corresponding to the inner surface of the zirconium cover, and is rigidly connected to it. 1 s.p. f-ly, 3 ill.