SU1759999A1 - Device for diverting fish from one reach of hydraulic engineering system to another - Google Patents

Abstract

Use: in waterworks for the transfer of fish from one pool to another. SUMMARY OF THE INVENTION: A storage hopper with a power supply unit, an impeller device 5 mounted on guides 4, and output tips are placed in the downstream of the hydropower plant. In the bottom of the storage tray, from the upstream side, there is a bottom niche 7 in which container 10 is installed, and a board 9 in which board container 11 is installed. The bottom of chamber 9 and niche 7 is made with a slope towards niche 7. Containers 10 and 11 are made with racks having rollers 12. The racks on the side of chamber 9 are shorter than the opposite ones. Above the niche 7 there is a trestle with a lifting device connected by flexible rods 13 to the container 10. Between the chamber 9 and the storage tray there is a shutter 8. After accumulation of fish in the storage tray, it is transferred to the container 10 by means of the device 5. in the upstream by a lifting device through the gigs 13, and in place of the container 10 a container 11 is placed. 3 sludge. THX

Description

The invention relates to hydraulic engineering, in particular to fish passages designed to transfer fish from the downstream to the upper (for example, fish passages, hydraulic and mechanical fish lifters).

The purpose of the invention is to increase productivity and reduce injury to fish.

FIG. 1 shows the proposed device, a longitudinal section; in fig. 2 shows a cross-section through the additional chamber to the bottom niche at the time of installation of both containers there; FIG. 3 shows a cross-section A-A in FIG. 1, bypass galleries of the power supply unit.

The device includes a storage tray 1, output tips 2 bypass galleries 3

power supply unit, covered with a perforated sheet and equipped with valves (not shown). A power unit (not shown) is provided to supply water to the bottom niche area. In the upper part of the walls of the tray-accumulator 1, guides 4 are arranged for moving the motive device 5 having a net 6 connected to a drive (not shown). In its head part (from the side of the upper reach), the storage hopper 1 has a bottom niche 7, the bottom of which is made with a transverse slope. The bottom of the niche 7 is connected by means of the shutter 8 with an additional chamber 9 having a bottom located in the same plane with the bottom of the bottom niche 7. To transfer the fish to the upstream in the additional chamber 9 and the niche

VI

cl

S

yu yu

7, the main 10 and an additional 11 containers are installed that can move independently within the chamber 9 and the niche 7 by placing rollers 12 in different racks in their lower length 12. To transfer the fish to the upstream containers 10 and 11 are connected by flexible connections ( t g, cables) 13 with a gantry crane 14 installed in the longitudinal section of the dam with the ability to move along the overpass towards the upstream.

In order to count the fish, as well as record the accumulation of fish in the storage hopper 1, fish counting devices (not shown) are installed at the entrance of the fish, recording both fish that have come and skipped fish. The information from the fish counting devices is transmitted in digital or analog form to the control unit of the fish passage.

The device works as follows.

Depending on the ichthyological situation in the downstream of the hydrosystem, opening the gates of the exit tips 2 of the bypass galleries 3 provides the necessary mode of attracting fish in the hopper 1. At the end of the process of attracting and accumulating (for example, using information received from fish-counting devices installed on the input of the storage tray 1) the gates of the output tips 2 are closed, and to create a water flow in the storage tray 1 at speeds of 0.2 - 0.3 m / s, a power supply unit (not shown) operates, arranged in the area of the niche 7. At the same time, the mesh cloth 6 is lowered, blocking the living section of the storage tray, and the trolley of the motive device 5 starts moving along the guides 4 towards the bottom niche 7. After passing through the alignment of the tips 2 located at the entrance of the storage tray 1, their gates are opened, creating an attractive current at the input of tray-accumulator 1. After the passage of the netting sheet 6 of the alignment of the second tips 2, their closures open, creating a water flow in the tray-accumulator 1 itself, and the closures of the tips 2 located at the inlet a-1 accumulator, prikryvayuts so that the total flow ensures optimum hydraulic flow pattern on the tray-1 reaching the accumulator inlet to the bottom recess 7, motive device 5 is stopped. The fish accumulated in the structure appears in the space above the main container 10.

To transfer the fish to the upstream container 10 by means of flexible couplings (t g) 13, the gantry crane 14 rises to the level of the upstream, then the gantry crane 14 transports the container 10 along the overpass towards the upstream, where it falls down to the water level. The fish then adapts.

to upstream conditions (hydraulic mode, water temperature, etc.), for this purpose, flow conditions are created in container 10 (for example, opening its end walls). Time of adaptation and keeping fish

in container 10, which is in the upstream, is limited only by the time of attraction and accumulation of fish in the storage hopper 1 (for example, it is known that the time of attraction is 1.5-2.0 hours) minus the time for transferring the container 10 to additional chamber 9. The increase in the time of adaptation and release has a beneficial effect on the physiological state of the fish, which, having restored their energy abilities and the level of chemical and biological reactions of the organism, can continue to migrate to spawning grounds without being exposed to external conditions habitats (flow rate on the spillway, the presence of predators, etc.). Simultaneously with the transfer of fish in the container 10, a technological operation is carried out to install an additional container 11 in the bottom niche 7. Netting web 6 occupies

position at the bottom niche, preventing fish from getting into it from the side of the storage hopper 1.

The shutter 8 is lifted, stoppers (not shown) are removed, and an additional container 11, installed in the additional chamber 9, under the action of its own weight on the rollers 12 enters the bottom niche 7 along the inclined bottom, taking the place of the main container. After that, the shutter 8 is lowered,

The web b is raised, the trolley of the motive device 5 is directed towards the entrance of the storage bin 1.

After the time of adaptation and keeping the fish under the upstream conditions, depending on the design of the container 10, the fish is released into the upstream (for example, the bottom opens; the container is tilted; the false bottom rises). After releasing the fish from the container 10, the gantry crane 14 transfers the container 10 to the flexible connections x 13 into an additional chamber 9.

As information is received on the number of accumulated fish in hopper 1 (for example, the fish counting system

devices at the entrance of the storage hopper) the process of transferring fish to the headwater is repeated.

The invention implements a new technology of transferring fish from one side of a hydroelectric complex to another, using a new set of

Claims (1)

structural elements. In general, the use of this device allows to significantly increase the efficiency of similar fish drainage facilities. The invention of the Device for transferring fish from one side of a hydroelectric complex to another, including a storage tray located in the downstream, a power unit, coupled with a storage tray on the side of the upstream, an overpass located in the upstream, an incentive device with a net canvas, mounted for movement along a storage tray, a lifting device mounted on a ramp, and a container connected by flexible rods to a lifting device, with a bottom niche in the tray under which Ora container is placed, characterized in that, in order to increase productivity and reduce injury to fish, it is equipped with an additional container, and in the board of the storage tray opposite the niche there is a chamber in which the additional container is placed, with the bottom of the chamber and the niche inclined towards the niche, the containers are made with stands in the lower part and rollers mounted on the lower ends of the racks, and the racks of each container on the camera side are shorter than the opposite ones. Fig. / ff (rig 2