SU1557248A1 - Fish-pass - Google Patents

Abstract

The invention relates to hydraulic engineering and can be used to pass fish through low and medium pressure plates. The purpose of the invention is to increase the efficiency of passing fish by reducing the flow of water and attracting fish to the fish path. The fish pass includes a fish path made in the form of a pipe 1 installed inside the conduit 2 connecting the upper 3 and lower 4 tails of the dam 5. The pipe 1 is installed in the conduit 2 rotatably around its axis using an actuator made in the form of blades 19 on the surface of the pipe 1, to which a water flow is supplied through the channel 20, regulated by a valve 21. At the ends of the pipe 1, partitions 6 and 7 are installed in which holes 8 and 9 are made, offset from the axis of the pipe 1 and relative to each other. In the conduit 2, on both sides of the pipe 1, partitions 13 and 14 are installed with the formation of finger gaps 15 and 16 between them and partitions 6 and 7. In openings 17 and 18 are made in partitions 13 and 14, respectively. A source of artificial light 23 is placed inside the tube 1. To adjust the frequency of rotation of the tube 1, there is a brake 22. When the damper 21 is opened, water enters the blades 19 and the tube 1 comes into rotation. Passing the blade 19 m water through the hole 17 comes out and attracts fish to it. When the holes 17 and 8 are aligned in the tube 1, a light source is ignited, which attracts the fish inside it. Further rotation of the pipe 1 leads to the overlap of the hole 8 by the partition 13, but then the holes 9 and 18 are aligned, the light source goes out and the fish enters a more illuminated upper pool. Tube 1 rotates continuously, causing the cycle to repeat. 3 hp f-ly, 9 ill.

Description

The invention relates to hydraulic engineering and can be used to pass fish through low- and medium-pressure dams.

The purpose of the invention is to increase work efficiency.

Fig, 1 schematically depicts a fish pass with a flat partition on the fish passage from the upstream side, a longitudinal section; in fig. 2 is a view A of FIG. one; in fig. 3 is a view B in FIG. one; in fig. 4 is a view A of FIG. 1 with the rotation of the fish passage at 90; in fig. 5, entry B in FIG. 1 with the rotation of the fish tract at 90 °; in fig. 6 is a view A of FIG. 1 with the rotation of the fish tract through 180 ° j in FIG. 7 is a view B in FIG. 1 with a 180 ° rotation of the fish passage; in fig. 8 - fish passage with a partition on the fish passage from the upstream, made in the form of a truncated cone, longitudinal section | in fig. 9 the same, with a partition made in the form of an inclined truncated cone, a longitudinal section.

The fish pass includes a fish pipe, made in the form of a pipe 1 installed on a conduit 2 connecting the upper 3 and lower 4 tails of the dam 5, the pipe t is installed along the axis of the conduit 2 rotatably around it and provided with partitions 6 and 7 fixed to its ends from the bottom 4 and the top 3 pools. In partitions 6 and 7 made

holes 8 and 9 are not offset offset along the pipe axis t

5 LRUga and employees for the entry and exit of fish from the fish passage.

To prevent injury to the fish and its direction to the inlet 8, there is a guide net 10 and 10, as well as soft gaskets 11 and 12, fixed on the edges of the holes 8 and 9 and on fixed partitions 13 and 14, installed in the conduit 2. sides of the fish tract, with the formation between

5 with them and partitions 6 and 7 at the ends of the pipe 1 of the annular slots 15 and 16. In the partitions 13 and 14, respectively, holes 17 and 18 are made. As a drive, blades 19 are made on the outer surface of the pipe 1 of the rotary fish path, through which channel 20 water flow regulated by damper 21.

 Using annular slots 15 and 16 formed between the swivel tube 1 and the fixed partitions 13 and 14 in the upper 3 and lower 4 pools, an adjustable annular gap is provided, which creates lightly overflowable tract in the inlet 8 and outlet 9 which serves to attract fish to these holes. The flow of water directed to the blades 19 is brought under the net 10 and is used to attract the fish to the inlet 17 of the fish pass.

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The pipe 1, besides the valve 21, is also installed by the brake 22, the adjustment of which is outputted above the water level in the downstream 4.

The fish pass can be provided with a source of artificial light installed in the fish passage, preferably on the axis of rotation of the pipe 1, used to attract fish to the inlet 8 of the fish pass. Partition 7 on the fish path from the upstream 9 can be made in the form of a truncated cone fixed a large base to the end of the pipe 1, and the outlet 9 in it is made in the smaller base of the cone (Fig. B)

In addition, the fish passage can be equipped with a fish retaining visor 24, made in the form of a confueor fixed around the hole 8 in the partition 6 at the end of the tube f located on the side of the lower pool, while the partition 7 on the fish passage from the upstream 3 is made in the form of an inclined truncated cone, fixed with a large base at the end of the pipe 1, and the hole 9 in it is made in the smaller base of the cone and is equal in size (Fig. 9).

Fish navigator works as follows

With the rotation of the pipe 1, the opening 8 gradually comes out from under the partition 13 that overlaps it, and the artificial lighting source 23 is ignited. Upstream fish, attracted by an adjustable stream of water coming out from under the grid 10 and easily overwhelmed by the stream of water from the hole 8, as well as the light of the artificial light source 23, enters the hole I, as shown in FIG. 1 8 and 9. The pipe 1 continues its slow continuous rotation and the opening 8 gradually goes under the partition 13, i.e. it closes and the light source 23 goes out. In the darkness that has come inside the fish passage, gradually comes out from under the partition 14 and the outlet 9 opens, and the fish party captured by the slewing tube 1 rushes into the more illuminated headwater 3 to meet the light / feodolim water flow that is provided

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versts x 8 and 9 over the annular slots 15 and 16 between the movable 6 and 7 and the fixed 13 and 14 partitions of the fish passage. The cycle of capture and transfer of a batch of fish downstream 4 into the upper 3 is completed,

As the pipe 1 is rotated further, the opening 9 gradually overlaps with a partition 14n and then, on the other side of the dam 5, from below the partition 13, the opening 8 starts to open and the source 23 lights up. The cycle of capture and transfer of a batch of fish from the downstream 4 to the upper 3 is repeated.

Claims (4)

1. Fishery, including a fish pipe, made in the form of a pipe installed in the conduit connecting the upper and lower water supply structures along its axis with the possibility of rotation around it using an actuator made in the form of blades fixed on the outer surface of the pipe, characterized by that. what. In this case, the water supply and fish passages are equipped with partitions with an opening m -1, while at the fish passage the partitions are fixed to the pipe ends, and the holes in them are offset from the pipe axis and relative to each other, and in the water supply the partitions are installed along both sides of the fish passage with the formation between them and partitions fixed at the ends of the pipe, an annular gap so that when the holes in the partition fixed at the end of the pipe are aligned with the holes in the partition at to the conduit on one side of the fish passage, a hole in the partition, fixed on the end of the pipe on the other side of the fish passage, is blocked by a partition located on its side in the RG conductor. 2. The search for l. 1, characterized in that a source of artificial lighting is installed in the fish passage. 3. The switch on PP. and 2, characterized by the fact that the partition on the fish passage on the side of the upper pool is made in the form of a truncated cone fixed with a large base to the pipe end, and the hole in it is made in the smaller base of the cone. 4. Fish navigator on PP. 1 and 2, which is equipped with a fish retaining visor made in the form of a confuser and fixed around the opening in the partition on the end of the pipe, go from the downstream, while the partition on the fish passage from the upstream is made in the form of an inclined truncated cone, fixed with a large base on the end of the pipe, and the hole in it is made in the smaller base of the cone and is equal in size. ML Fiyo.2 fig & MS Fig.Z a.sh Fig 5 8utA 8u & 6 FIG. eight L If 7 M && W Fa.§