RU1824478C - Fishway cap - Google Patents

Abstract

Usage: transfer of fish from the lower pool of the hydraulic system to the upper pool. SUMMARY OF THE INVENTION: a fish is attracted by the noise of a falling hearth and concentrates on the open part of the transport container. An annular restrictive net is raised which cuts off concentrated fish from the downstream waters. By lifting the transport container, fish are transferred to the upstream. 3 ill.

Description

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FIELD OF THE INVENTION The invention relates to hydraulic engineering, in particular to fish access structures (fish access locks, fish lifts, devices for transferring fish from the downstream end of a waterworks to an upstream).

The purpose of the invention is to increase work efficiency.

In FIG. 1 shows a head, cross section; in FIG. 2 is a view A in FIG. 1; in FIG. 3 - the same, the operation of transferring fish to the upper pool.

The head of the fish passage structure includes an inlet made in the form of a cylinder 1 with a hemispherical upper part having water outlets 2, the central axes of which are oriented at different angles to the water horizon, the collector 3 provided with a power unit in the form of a shutter 4. Cylinder 1 is made with a circular base 5, inside of which an annular niche is made, in which a transport container 6 of an annular shape with a central hole 7 is installed, the diameter of which is slightly larger than the diameter of the cylinder | A ring niche 8, made around the outer perimeter of the circular base 5, has a ring-shaped guard net 9, in its lower part equipped with a ballast compartment 10, which, in turn, is connected to a compressor (not shown), and an air supply hose (not shown) is equipped with a device to release air from the inner space of the ballast compartment 10. To ensure the operability of the ballast 9, as a lifting mechanism and to carry out the operation of lowering the annular mesh 9 into the additional annular niche 8, in the bottoms ballast compartment 10 ypolneny air outlet (not shown).

The head of the fishing passage works as follows.

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The process of attracting fish from the downstream water area is carried out by opening the shutter 4 and feeding the flow rate through the collector 3 to the water outlet holes 2 of the head 1, the hydraulic jets of water leaving the water outlet holes 2 of the cylinder 1 are distributed with uniform intensity over the mirror of the adjacent water area the entire perimeter of head 1 (360 °). A fish attracted by the noise of falling water (rain effect), as well as partially aerated water, is concentrated around the cylinder 1 above its base 5, made in the form of a circle. In order to increase the fish concentration efficiency near the cylinder 1 and above the platform 5, part of the holes 2 are flooded. At the same time, hydraulic jets work in the thickness of the stream, creating speeds that attract fish, and also contribute to the active manifestation of a re-reaction in fish.

After some time (for example, according to the operating instructions for the head) from the additional annular niche 8, by means of a drive, an annular guard net 9 rises, which cuts off the fish concentrated at cylinder 1 from the downstream water area, while the fish is attracted by the jets of flooded holes 2 , as well as due to the noise created by the jets falling on the mirror of the reservoir, does not have time to leave the water space above the disk 5. Then, the shutter 4 is closed and the operations of transferring the fish to the upper pool begin.

The ballast compartment 10 performs the function of driving the net 9; for this, it is equipped with an air supply hose (not shown) and water outlets (not shown) located on the bottom of the ballast compartment 10. By means of a compressor (not shown), compressed air is supplied into the internal the space of the ballast compartment 10, while water is discharged from its internal volume from the water outlets of the bottom of the ballast compartment 10. As the ballast compartment 10 is filled with air, it acquires positive buoyancy and a guard net 9

pops up. To lower the net 9 into the niche 8, the valve opens on the air duct and the air from the ballast compartment 10 is discharged into the atmosphere, while the net 9 is lowered into the niche 8.

The transfer of fish is carried out by lifting the transport container 6 by means of a lifting mechanism (not shown) and transferring it to the upper pool, where the fish is released. Then the container 6 is returned to the place due to the fact that its Central hole 7 freely (with tolerance) passes relative to the cylinder 1. The fence net 9 is lowered into an additional niche 8

and open the shutter 4, feeding the flow of water attracting the fish.

At the end of this process, the cycle of transferring fish to the upper pool is repeated. In this design is observed

the principle of the unity of distinctive features and the goal set by the authors is to attract and collect all fish caught in the zone of influence of the head.

Claims (1)

Formula of the invention The head of the fish passage structure, including a power unit, made in the form of a collector with water outlets, the central axes of which are oriented at different angles to the horizon, characterized in that, in order to increase work efficiency, it is provided with a base in the form of a disk, a transport container and an annular guard net with a ballast compartment in the lower part, while the collector has a perforated end part in the form of a cylinder with a hemispherical upper part, the base disc is coaxially fixed on the collector and has a main and additional circular niches located on the outer perimeter, the transport container being made in a circular shape and installed in the main niche, having a rectangular cross section, and the fence mesh is located in an additional annular niche, while some of the water outlets are not flooded. / V G I I Jk-. w 76 -h Mr.--  + & - --JT / YU T I I S fO 8  ///