FIELD: hydraulic engineering and water supply.
SUBSTANCE: invention is designed to prevent getting of young fish into diversion at water supply of objects from fishery rivers. Proposed water intake has massive head with crushed stone or stone cushioning layer, filtering cassettes on water intake hole with filtering charge, water intake bell connected with gravity or siphon water conduit. Charge of filtering cassettes is floating, made of different-diameter ball elements of positive fall diameter. Racks are installed in upper and lower parts of filtering cassettes horizontally. Distance between bars of racks is less than diameter of ball elements of floating filtering charge. Distance between upper and lower racks is 30-40% greater than thickness of charge layer which should be not less than 400 mm. Protection is provided by scaring young fish at active movement of ball elements of floating filtering charge in cassettes between upper and lower racks at hydrodynamic action of flow of water getting into water intake, and owing to mechanical prevention of getting of young fish into charge.
EFFECT: improved reliability of water intake in operation, reduced energy consumption at back flushing.
2 dwg
