DEVICE FOR ENTRAPPING SOLID PARTICLES IN NUCLEAR REACTOR FUEL ASSEMBLY (ALTERNATIVES)

摘要

FIELD: nuclear power engineering; fuel assemblies of pressurized-water reactors. ^ SUBSTANCE: proposed device designed for entrapping solid particles in fuel assembly has perforated plate which is undulatory in direction transversal to coolant flow. Mentioned plate in first design alternate of proposed device is saw-toothed in direction transversal to coolant flow. Mentioned plate in second design alternate of device is made in the form of concentric perforated truncated cones alternately installed with their vortices up and down. Mentioned plate in third design alternate of device is made in the form of concentric truncated pyramids alternately installed with their tops up and down. ^ EFFECT: enlarged total coolant flow section of device installed at fuel assembly inlet. ^ 8 cl, 4 dwg