FISH PASSING STRUCTURE Russian patent published in 1996 - IPC

FIELD: structures providing fish passing through hydrosystems. SUBSTANCE: water is supplied to working chamber 2 through gallery 14 of lower deck. Then it is supplied to pools 1 of fish storage. Water catches fish come in the fish storage. Then the fish moves through stepped pools 3 and enter working chamber 2. Once lower part of working chamber 2 has been filled up, upper gallery 13 is brought into action to increase water flow rate. Water level rises in working chamber 2, and on filling working chamber 2 up to level of upper water, gate of outlet tray 12 becomes open and the fish enters upper water. EFFECT: fish passing through hydrosystem. 5 dwg