SU1618825A1 - Fish pass - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to hydraulic engineering, in particular, to devices providing for the transfer of fish from the downstream of the hydrosystem to the upper one. The purpose of the invention is to increase the work efficiency by improving the hydraulic structure of the stream that attracts fish. The fish pass includes a fish tank 1 located downstream and made in the form of tray 2, an incentive device 3 with a net canvas 4, a power supply unit 5, an ichthyological site 7, devices 8 for forming settling zones 9 and drives 10. The devices 8 are made in the form of niches 11 and shields 14 installed in niches 11 with the possibility of being moved from a drive 10. During the accumulation of fish in tray 2, shields 14 are recessed into niches 11, thus creating settling zones 9 in which the fish can be resting during their movement along tray 2. 3 Il.

Description

8 1Ь 10 19 fa.l

19 11

FIELD OF THE INVENTION The invention relates to hydraulic engineering, in particular, to devices providing for the transfer of fish from the downstream of the hydrosystem to the upper one.

The purpose of the invention is to increase the efficiency of the fish by improving the hydraulic structure of the flow that attracts the fish.

FIG. 1 shows a fish protection device, a plan; FIG. 2 is a section A-A in FIG. 1 with open niches; in fig. 3 - the same, with closed niches.

The fish pass includes a fish collector 1 located in the downstream and made in the form of a tray 2, an incentive device 3 made in the form of a net cloth 4 mounted for movement along the tray 2, a power supply unit 5 made in the form of a bolt 6 installed in a tray 2 on the upstream side, an ichthyological site 7 located at the downstream side of the power supply unit 5, tools 8 for forming settling zones 9 and drives 10, while tools 8 for forming settling zones 9 Yens in the form of niches 11 located along the length of tray 2 in its sides 12 and bottom 13, and shields 14 installed in niches 11 with the possibility of movement from actuators 10 along lines perpendicular to axis 15 of tray 2, in addition shields 14 are installed in niches 11 in planes parallel to the sides 12 and bottom 13 of tray 2, and their dimensions correspond to the dimensions of the openings of the niches 11.

The fish pass also has a downstream operating shutter 16. The actuators 10 can be made in the form of air-filled shells 17, which are connected via ducts 18c by a compressor (not shown). Supporting elements are provided for moving the shields 14 within the niches 11 19. The working chamber 20 is located between the gates 6 and 16.

The fish passage works as follows.

Depending on the ichthyological situation in the downstream, through the fish store 1, with a corresponding opening of the clinkers in the gate 6, the water consumption required for attracting fish to the tray 2 gets. At the same time, the ichthyological platform 7 is in the extreme position, the downstream operating shutter 16 is raised, the shields 14 of the devices 8 for forming the settling zones 9 are recessed in the niche 11, the stimulating device 3 is located at the entrance to the tray 2 with the raised netting 4. Flow, leaking along the path of fish accumulator 1, it forms 11 whirlpool settling zones in niches 9.

At the same time, fish entering tray 2 are able to move to niche 11 and stay there for a certain time.

As the fish accumulation operation is completed, the net canvas 4 of the motive device 3 is moved to a vertical position and it moves along the tray 2 towards the headwater. As the mover device 3 approaches the net canvas 4, air is supplied to the niches 11 into the shells 17 through ducts 18 from a compressor (not shown), as a result of which the shells 17 increase in size and move the shields 14 to the supporting elements 19. exit in tray 2, and the motive device 3 encourages them to move in the direction of the upstream. As the trigger device 3 of the niches 11 passes, valves (not shown) of the vent pipes 18 operate, the pressure in the envelopes 17 decreases, and the boards 14 under the pressure of the water flow move to their original position in the internal cavity of the niches 11. Downstream the fish in the working chamber 20 drops down operating gate 16, filling working chamber 20 to the level of water in the upstream. When the ichthyological site 7 is raised, fish are counted, after which it moves to the initial position. Then, shutter 6 rises and the fish exits to the upstream. With the return of the mechanisms to the initial position, a new cycle of the construction of the structure begins.

Claims (1)

Claims of fish pass through device, including fish reservoir located in tray type, stimulus device made in the form of a mesh cloth mounted for movement along the tray, power supply unit made in the form of a shutter installed in the tray from the upstream side, an ichthyological site located downstream side power supply unit, and devices for forming settling zones, characterized in that, in order to increase work efficiency by improving the hydraulic structure attracting fish flow, it is equipped with drives, and a device for forming settling zones is made in the form of niches located along the length of the tray in its sides and bottom, and shields installed in niches with the ability to move from the drive along the lines perpendicular to the axis of the tray, the boards are installed in niches in planes parallel to the sides and bottom of the tray, their dimensions correspond to the dimensions of the openings of the niches, and the drive is located between the shield and the back wall of the niche. f T v LH iAd //