SU1637726A1 - Systems for ensuring natural spawning and producing young fishes - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to fish farming, in particular, to systems for ensuring natural spawning and production of juvenile fish. The aim of the invention is to improve the performance of the system and improve the FM 1 habitat and spawning of fish. For this purpose, the system includes additional closed. Annular channels 2 with a different cross section of at least one, the channels are interconnected by channels 6. equipped with flaps 7 A device for creating fish flow attracting fish is installed in the area of adjoining supply channel 25 as well as mechanical and electrical devices attracting fish, annular channels 1 and 2 are equipped with sensors 34 connected to a thyristor control device connected to vigatelem pumping station 8 and outlets valves with actuators 10. The system is provided to attract fish to spawn, its conditions are improved, is performed for monitoring environment parameters and the state of fish and water are automatically controlled moving speed. 4 il. l YO ON CO VI VI CE O No.

Description

FIELD OF THE INVENTION The invention relates to fish farming, in particular, to systems for ensuring natural spawning and production of juvenile fish, for example, carp, perch.

The purpose of the invention is to increase the system performance and improve the living conditions and spawning of the fish P1.

The system has created conditions for attracting fish from a natural reservoir and choosing places with the speed of water most favorable for spawning. The system provides automatic adjustment of water speeds.

Fig. 1 shows a system for spawning and breeding fish, top view; FIG. 2 is a section A — A in FIG. 1: FIG. 3 is a block diagram of the connection of sensors for determining the parameters of the medium to the thyristor control device; FIG. 4 is a diagram of the disassembly of devices ensuring the attraction of fish to the system from a natural reservoir, an option.

The system for spawning and breeding fish contains a closed annular channel 1 with a horizontal bottom, having the form of a ring with a trapezoidal cross section, and an additional similar annular channel 2 located closer to the central part of the system and having a cross section larger than in channel 1 Channels 1 and 2 are divided among themselves by a dam 3, the presence of which makes it possible to raise the water horizon in them to elevations above the bottom marks of the shallow water areas 4 The outer perimeter of the external calcium channel 1 is located fencing yes mba 5, equal in height to the dike 3. The annular channels 1 and 2 are interconnected by ducts 6 made in the body of the dike 3. The ducts 6 are equipped with flaps 7

The system is equipped with means for creating circulation currents in canapels, which includes pumping station 8. ring distribution pipe 9, water runners 10 equipped with valves and jet nozzles 11 providing discharges in the canal channels 1 and 2. Jet nozzles 11 can be sent to the pink burnout mozhno produce acceleration fso / ui in about, shomy or other direction However, if you have two or more yupieesh ..- kai.iyun: manual speeds dimimchshchch nnru I uish; go

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Pla 11 can only be directed one way. The means for creating circulation currents also includes a water intake annular manifold 12 with water intakes 13 equipped with flat, hinged caps and devices for creating an air-bubble curtain. Water intakes 13 communicate with water intake annular collector 12 through distribution wells 14.

A suction pipe 15 is provided for drawing water from the intake ring collector to the pumping station 8. The second suction pipe 16 serves to draw water from the water source. Pump station 8 is connected to an annular distribution pipe 9 by means of a pipeline 17. The system contains a fish collection and drainage network including concentric annular channels 18 with overflow intermittent dams 19 located along their outer perimeter, an open collector 20, originating in the center of the shallow areas 4 and equipped with tips 21, fish removal tracts 22, water flow controllers 23

0 and a waste structure combined with a fish catcher 24, a supply channel 25 with a blocking structure 26, a diverter channel 27 with a blocking co-alignment 28 combined with an emergency spillway and a fish catcher.

Before entering the inlet channel 25, a device 29 is installed in the main watercourse to create a stream of fish-attracting

0 and a mechanical device 30 that attracts fish, as well as an electric device 31, which serves to direct the fish to the channel 25 (Fig. 4). Water supply to the device

5 29 to create a fish attracting flow is carried out by means of a pipe 32, extending from an annular distribution pipe 9 and equipped with a shutter 33.

The device 29 for creating a fish-attracting water stream is represented by a system of nozzles on the pipe 32, which are designed to create an attracting stream - a plume.

The mechanical device 30 includes tactile landmarks; ditches, rapids, ledges and paths. The latter are His rough, converging to

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the entrance to the supply channel of the strip 25, arranged at the bottom of the reservoir in the form of a blind area of rubble stone embedded in a concrete base. In addition, mesh or screen barriers are provided that overlap the cross section of the watercourse, from which the direction of the fish to the feed channel 25 is provided.

In the annular channels 1 and 2, sensors 34 are located to determine the vapor of the environment and the condition of the fish, which are interconnected by a cable line with the remote control and control panel. Standard thermo-oximeters 36 (Fig. 3) are used to control the environmental parameters. Evaluation of fish condition is carried out using piezoelectric sensors 37, included in the set of domestic fish finders Iz or Bream. All piezoelectric sensors 37 are connected in parallel to the input of a single fish finder 38 installed on the remote control 35. Rybolokator 38 and thermo-oximeters 36 are connected to a thyristor control device 39. The sensors 34 include the sensors of thermo-oximeters 40 and piezoelectric sensors 37. The thyristor control device 39 is connected by a cable line to the electric motor of the pumping station 8 and to the elec Driving water outlet valves 10.

- The presence of an additional annular channel allows prompt variation both in the area of the living section of the channels, changing the water level in them, and simultaneously providing different water flow rates, which allows the fish to find places most favorable for spawning. The presence of devices that attract fish into the system allows an increase in the number of fish that came to spawn, and thereby increase its productivity. The sensor complexes, together with the thyristor control device, provide monitoring of the environmental parameters and the condition of the fish and provide automatic adjustment of the water movement speeds, thereby improving the spawning conditions.

The system for spawning and breeding fish works as follows.

The closed annular channel 1 through the supply channel 25, connected to an external water source with an open circuit

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The cooling structure 26 is filled with water. The pumping station 8, with the suction pipe 16 closed or the suction pipe 15 open, takes water from the channel 1 through the water intake manifold 12 and the water intakes 13. This ensures the initial movement of the water. Both when intake by suction pipe 15 and in case of intake by suction pipe 16, pump station 8 supplies water to ring distribution pipe 9, and then through water outlets 10 with jet nozzles 11, water is supplied under pressure to ring channel 1. The ejector effect that arises is conducive to acceleration water flows in the channels. Using the device 29 to create a fish-attracting water flow in the area of the inlet of the inlet channel 25 to the natural reservoir, a stream of water is created in the form of a plume, in which migrants can approach this channel only in the zone of the plume, and in other parts of the flow velocity or higher and overcoming them is unavailable to fish, or below the threshold, at which the movement of fish into the channel is not stimulated. Additional attraction of fish to feed channel 25 is provided by a mechanical 30 and an electric 31 devices.

The technology of passing natural fish spawning in canals can be seen on the example of spawning of plant fishes, the natural reproduction of which is not observed in regulated rivers. In the closed annular channel 1, manufacturers are started when it is filled with water to level V A. In the first half of July, through pumping station 8, the channel is periodically filled with water to level V B - and reset to level A А, Reset is performed through valves 7 into the internal annular channel 2. This eliminates unproductive water discharges from the system. The required water velocity in channel 1 is provided by the pumping station 8, thereby imitating the hydrological conditions close to natural and provoking the spawning of the producers. In the second half of July, the annular channel 1 is filled with water to the level of V B at a flow rate of 0.7. .1.2 m / s, simultaneously filling up to this level and the annular

channel 2. At the same time, the operation of the annular channels 1 and 2 starts at the open flaps 7, and due to the different sections of the channels, the water velocities in them will be different. With the flaps 7 open, this allows fish producers to select the required water velocities and portions of the annular channels 1 and 2 for spawning.

. After spawning, in the process of swelling of caviar swept out of the water flows, the speed in the annular channels 1 and 2 is set to 0.2 ... 0.4 m / s. The sensor complexes 34 provide monitoring of the environmental parameters and the condition of the fish, and together with the thyristor control device 39 they provide automatic adjustment of the water flow rates in order to optimize the spawning mode. The spawning phases are recorded by controlling the fish activity of the fish by the fish-digger 38. When the larvae are mass-hatching and switching to external feeding without changing the flow rate, the channel is filled to the level V C. At that, the shallow water flooded in shallow waters with water depths up to 0.5 m. The shallow water sites 4 are well warmed and rich in food. When the young fry are transferred to water bodies, the water level in the canal is reduced to the V V mark, and the young roll down the fish collecting network into the head 21 and then along the fish collecting line 22 into the waste structure combined with the catcher 24, where it is caught for transportation to other bodies of water or transferred to wintering ponds. That part of the young fish that, during a ramp, entered the fish-drainage network into the annular channel 2, through the cap 21 along the fish removal channel is also diverted to the waste structure. The latter ensures the reception of fish and their young also from channel 1.

The equipment of the feeding channel in the zone adjacent to the natural reservoir with devices for attracting and directing fish producers allows, without additional expenses (catching, transportation, etc.) to accumulate fish in the system in the shortest time and in the required amount for their subsequent spawning. In addition, injuries and stress of fish producers are excluded.

The parameters of the annular channels and the hydraulic regime in them allow fish producers to select the necessary, most favorable for the spawning rate of water, and in order to optimize the regime

Spawning complexes of sensors in conjunction with a thyristor control device provide monitoring of environmental parameters and fish conditions and automatic adjustment of water speeds. The spawning phases are recorded by monitoring the fish's activity by the fish trap.

Thus, the present invention allows to improve the performance of the system and improve the living environment and spawning of fish. The system can also be used for commercial feeding and

cage culture,

Claims (1)

The invention The system for spawning and breeding fish, including a closed annular channel with horizontal bottom, pumping station, outlet and inlet channels, nursery shallow areas located in an area outlined by an annular channel, fish catchers, dams and means for creating circulation flows in the channel, including nozzles, outlets with valves, water inlets connected to the water intake manifold, characterized in that in order to increase system performance and improve the living conditions and spawning of fish, it has an additional closed annular channel with water intakes and nozzles connected to main through ducts with dampers, devices for attracting fish from a natural reservoir to a feed channel, and in closed annular channels sensors are placed to determine environmental parameters and assess the state of fish during spawning, connected via a thyristor control device to an electric motor of a pumping station and electric drives for water outlets, while the closed annular channels have different cross sections. Aa FIG. 2 D o J7 about ten i ABOUT 40 - 36 Fig.Z - BUT / 36