RU1817800C - Fish way - Google Patents

Abstract

Usage: in hydraulic engineering construction, in particular in fish passageways for passing fish from the lower pool of the hydraulic system to the upper pool. SUMMARY OF THE INVENTION: In a downstream fish, attracted by the noise of water falling from a tray, accumulates in the settling zone and enters the fish passage. Attracted by the oncoming flow of water, the fish then passes into the intermediate volume of water formed by the enclosure, after which it is transferred to the upper pool. This ensures constant flooding of the fish transfer device of the dam and increase the efficiency of fish passage. 1 s.p. piano, 6 il, w Ј

Description

The invention relates to hydraulic engineering and is intended primarily for the reconstruction of existing hydraulic structures previously built without fish passage devices on fish passage rivers and canals, but can also be used in the construction of new dams.

The purpose of the invention is to expand the scope of application by providing constant flooding of the fish passage of the retaining structure.

This goal is achieved in that the fish passage is provided with a frame with openings and grooves, removable walls with seals and drain trays on their upper edge and a fish passage integrated in the lower part of the removable wall and made similarly to the fish passage device of the retaining structure, while interchangeable walls with seals

lowered into the grooves of the frame, which is adjacent to the retaining structure with the formation of an intermediate volume of water, and the retaining structure of the hydraulic system is made with drain trays with an adjustable hole, and the drain trays of the retaining structure and removable walls are placed above the inlet openings of the fish passage devices.

The rigidity of the carcass is ensured by the rails with which it is attached to the base of the retaining structure, while the stretch marks are flooded in the intermediate volume of water.

In FIG. Figures 1 and 2 show fragments of a dam, in which the water level of the lower pool does not reach the lower part of the shut-off device, lowered to the extreme position; in FIG. 3.4 - plan view of fragments of the same dam after reconstruction, at 00

00

6

than in FIG. 3 the fish passage and the adjacent intermediate volume of water are made in the center of the dam; in FIG. 4 - extreme position; in FIG. Figures 5 and 6 show the cross section, respectively, of the fish inlet and its release after turning the fish transfer mechanism 1806.

Dam 2 is made at watercourse 1. Interchangeable locking devices installed in the grooves of the dam are equipped with lifting mechanisms (not shown conditionally). During the reconstruction of dam 2, fishery passages 7 are mounted in removable locking devices 4 and b, around each of which a guard 8 is installed on the downstream side, hermetically adjacent to the dam body and creating an intermediate volume of water 9, the surface level of which significantly exceeds the level water of the lower reach and allows from the side of the lower reach to flood inlets, fish passages. ; .- .: -,:. ; L.-: -,. One (or FIG. 3) of fish access devices 10 is built into the fence 8, the design of which can be similar to the fish passage 7. Behind the fence 8, a settling zone 11 is formed adjacent to the fish passage devices 10 and contributes to the accumulation fish weakened by the long spawning road or adverse conditions in the downstream.

The fence 8 is made in the form of a frame 12 with openings and removable walls 13, lowered into the grooves along the edges of the openings. The frame 12 can be located on a flat frame (not shown conditionally), lowered to the dam base or made in the form of interchangeable columns with a wide supporting part installed in the foundation sockets and provided with grooves for interchangeable walls, while additional stability to the elements of the frame is given by a cable system zhek 14, hidden in the intermediate volume of water.

Fish passage devices 10 are built into removable walls 13, which makes it possible to repair and maintain them without the use of underwater operations, as well as the possibility of removal for the period of passage through the dam from the upstream ice.

Although the design of the fish passage 7 provides control of the flow of water entering the intermediate volume 9, over the inlet openings of the fish passage 7 and fish passage devices 10, drain trays 15 are provided that are overlapped by adjustable shutters 16, which allow to increase the water flow entering the intermediate volume and direct the fish to fish inlet openings, where a fish-attracting stream of water coming out of said fish passage openings is very well felt and

fish passage devices, while the flow rate of water through the locking device of the dam is equal to the flow rate of water through the fence.

The fish rising from the lower pool cannot overcome the flow of water escaping from the shut-off device (Fig. 1) and, moving along the dam 2, falls into the settling zone 1. Attracted by the noise of the water falling from the tray 15, it is easily overcome by the flow and light underwater

5 lanterns, a lot of fish through combined inlet holes enters the internal volume of the fish transfer mechanism, which makes a constant and invisible slow rotation for the fish (Fig. 5). Input

0, the hole is gradually blocked by the lateral surface of the rotating fish transfer mechanism, the source of artificial lighting is extinguished, and the exit holes are combined, opening the passage with more light intermediate water volume (Fig. 6).

An attractive stream of water, which flows through, also contributes to the release of fish. cut combined holes and inner

0 volume of the fish transfer mechanism to the downstream. The presence and simultaneous operation of several fish access devices that transfer fish from the downstream waters to an intermediate volume, contributes to its concentration and increases the efficiency of the known fish passage 7, which is integrated into the dam locking device and transfers concentrated batches of fish to the upper pool (Fig. 3) .

О Thus, the transfer of fish is carried out in two stages - from the lower pool to the intermediate volume, and from it to the upper pool.

The proposed fish passage makes it possible to expand the possibilities for transferring fish through dams, in which the water level of the Lower Downstream does not reach the shut-off device and to provide better organization of fish passage due to the location of the required number of fish passageways along the routes of natural fish migration and a large number of cycles of its operation.

The time of transferring the batch of .fishes in one step is 1-3 minutes, i.e. 500-1500 cycles per day5 days, and the total transfer time is 3-10 minutes.

The proposed fish passage makes it possible to solve the problem of equipping existing dams with fish passage devices with practically no cost, without violating the monolithic body of the dam, which

will provide them with the widest application in the national economy.

Claims (2)

SUMMARY OF THE INVENTION 1. Fish passage, including a fish passage located in a retaining structure of a waterworks structure, made in the form of two hollow coaxially arranged cylinders mounted parallel to the axis of the retaining structure, the outer cylinder fixedly mounted on the retaining structure, and the inner cylinder mounted for rotation by means of a drive in the form the impeller, while the input and output holes of the outer cylinder are diametrically opposed, and the input and output holes The holes of the inner cylinder are made in a row along one of the opposite holes of the outer cylinder and correspondingly equal in width, in addition, there is an artificial light source in the inner cylinder, and the walls of the inner cylinder opposite its holes are perforated, characterized in that , with the aim of expanding the scope by providing constant flooding of the fish access device of the retaining structure, the fish passage is equipped with a frame with openings and grooves, interchangeable walls with seals and drain trays on their upper edge and a fish transfer device integrated in the lower part of the interchangeable wall and made similarly fish access device of the retaining structure, while the removable walls with seals are lowered into the grooves of the frame, which is adjacent to the retaining structure with the formation of an intermediate volume of water, and the retaining structure of the hydraulic system is made with drain trays with an adjustable hole, and drain trays of the retaining structure and removable walls are placed under inlets of fish passage devices. 2. The fish passage according to claim 1, characterized in that the frame is provided with extensions that are fixed to the base of the retaining structure, wherein the extensions are flooded in an intermediate volume of water. Figure 1 1817800 Fig.Z Figl