FISH-PROTECTION CULVERT WATER INTAKE Russian patent published in 2000 - IPC

FIELD: hydraulic engineering. SUBSTANCE: water intake has water intake surface with water outlets. Water intake surface is built up of plates that function as flow vortex generators and have water outlet slits in-between; working edge of plates is of wavy character with crests and valleys of vortex generators 8 arranged along water stream in staggered manner. Such design provides for organizing hydraulic structure of flow around water intake enabling young fish to escape water intake surface either by force or independently in its way. EFFECT: improved effectiveness of fish- protection device. 2 cl, 8 dwg