COMPLEX FISH-PROTECTION STRUCTURE OF GUARD AND GUIDE ACTION (KRUON) Russian patent published in 2013 - IPC E02B8/08 

FIELD: construction.

SUBSTANCE: complex fish-protection structure of guard and guide action comprises a horizontal element - a stationary structure in the form of a horizontal slab and a behavioural guide element (a screen). The horizontal slab adjoins a water intake structure and forms a gallery, through which the water intake flow moves into the water intake. The horizontal slab separates the flow into its upper and lower parts and creates a zone in the upper part, which does not communicate with the water intake flow, which is optimal for vital functions and reproduction of fish without risk of getting into the water intake. The guide element is made as vertical or inclined in the form of sections of an electric fish barrier, or a water-air curtain, or an air-bubble curtain, or a louver fish-protection device. The guide element is installed at the inlet to the gallery and provides for independent exit of fish from the lower part of the flow into the upper more comfortable zone of the water source. The horizontal slab is arranged below the water surface level. The length of the horizontal slab makes at least the height of the water intake window. The device may be installed in any conditions regardless of availability or unavailability of a transit flow. The device does not comprise a fish intake part that leads to the fish takeout.

EFFECT: increased efficiency of device functioning and expanded conditions of its application.

2 dwg