WATER INTAKE PASSAGEWAY Russian patent published in 2003 - IPC

FIELD: hydraulic engineering. SUBSTANCE: invention relates to devices preventing getting of young fishes and debris carried by flow into water intakes. Water passageway is made double-tier, consisting of surface and deep-water diaphragms made of flexible material and comprising vertical protective plate and horizontal lip with sill. Surface diaphragm is held in required position by fixing arrangement in form of floats, cables and anchors. Deep-water diaphragm is secured on stationary hinged frame of variable geometry connected, in its turn, by articulated tie-rod with float of fixing arrangement of surface diaphragm. Float is made in form of catamaran. Proposed device can operate at changes of water levels in water source and at wave actions in water storage basin. and it can be used to prevent getting of objects entrained by water flow over entire depth of flow, especially, young fishes, floating oil products and debris, bottom bed loads and it provides taking of cold water from bottom layers. EFFECT: enlarged operating capabilities. 2 cl, 6 dwg