FLOATING FISH PROTECTION DEVICE

FIELD: construction.SUBSTANCE: floating fish protection device includes a mesh fish protection screen made in the form of a cylinder segment from a fine mesh with the cylinder generatrix orientation along the flow, a flow developer and a flushing flute connected to a pressure pipeline. The base of the cylinder segment is made floating, and from its bottom side a pressure pipe having a window on the lateral surface is fixed horizontally. On the pressure pipe, a bushing is fitted with the possibility of free rotation and with butt seals, on which two flushing flutes are fixed in parallel with the pressure pipe by means of two hollow levers arranged perpendicular to the rotation axis at an angle to each other. The nozzles of each flute are directed at an angle to the screen surface towards the other flute. The flute is made with positive buoyancy. Between the pressure pipe and the bushing a ring is enclosed, having two windows separated by a bridge and a lock on the inner side diametrically opposite to the bridge, in the form of a spring-loaded ball mounted in the recess. Wherein the size of the window in the pressure pipe coincides with the size of the bridge between the ring windows. On the pressure pipe, two shaped grooves are made in such a way that when the lock ball is located in the grooves, the window in the pressure pipe is connected to the corresponding ring window. Wherein the ends of the levers protrude into the bushing and are located in the corresponding windows of the ring.EFFECT: increasing the fish protection effectiveness due to ensuring the uninterrupted operation of the device.4 dwg Изобретение относится к гидротехническому строительству, а именно к рыбозащитным устройствам в составе мобильных водозаборных сооружений, используемых на малых водотоках. Плавучее рыбозащитное устройство включает сетчатый рыбозащитный экран, выполненный в виде сегмента цилиндра из мелкоячеистой сетки с ориентированием образующей цилиндра вдоль потока, потокообразователь и промывную флейту, соединенные с напорным трубопроводом. Основание сегмента цилиндра выполнено плавучим, а с его нижней стороны горизонтально закреплена напорная труба, имеющая окно на боковой поверхности. На напорной трубе с возможностью свободного вращения и торцевыми уплотнениями надета втулка, на которой с помощью двух полых рычагов, расположенных перпендикулярно оси вращения под углом друг другу, закреплены две промывные флейты параллельно напорной трубе. Сопла каждой флейты направлены под