FISH PASS STRUCTURE OF HYDRAULIC POWER SYSTEM Russian patent published in 1995 - IPC

FIELD: hydraulic engineering. SUBSTANCE: fish pass structure of hydraulic power system has dam 1 with trestle 2, chute 3, working chamber 4, outlet chute 5, bottom recess 7, container 8, hoisting mechanism 9, flexible rods 10, power supply unit 11, fish barrage gate 12, vertical water conduit 13, water pass port 14 with gate 15, additional recess 16, damping chamber 17. Unit 11 is provided with multi-stage water distributing device 18, flow damper 19 and 20. For drawing fish into chute 3, drawing sweep of speeds is created by means of unit 11. After accumulation of fish in container 8, it is raised by means of hoisting mechanism 9 and is shifted to additional recess 16. Then fish is transferred to water-head. EFFECT: enhanced efficiency and reduced injury to fish. 3 cl, 4 dwg