NUCLEAR REACTOR FUEL ASSEMBLY

The invention is related to the nuclear power industry sphere, specifically to the design of fuel assemblies of nuclear reactors, and is aimed at supporting efficient mixing of the heat carrier for the purpose of improving heat removal from fuel elements.The nuclear reactor fuel assembly contains upper and lower end caps, guide channels, fuel elements situated in triangular network points, and at least one array consisting of cells integrally connected in between. Each cell is made in the form of a shaped tube, with the longitudinal axis thereof coinciding with the longitudinal axis of the fuel element and having hexagon-shaped cross-section, with its edges consisting of middle and two outermost sections. Outermost sections, at least near edges of cells from the upper end cap side, have deflection with a steady change in value along the longitudinal axis of the cell. Outermost sections of neighboring edges adjacent to common top of hexagon have deflection direction opposite to the cell centerpoint. Directions of deflections of adjacent cells' edges contacting with each other are opposite relatively to centerpoints of their specific cells. There is no gap between array cells.