RU1778225C - Fish ladder - Google Patents

Abstract

Usage: transfer of fish from the lower pool of the hydraulic system to the upper pool. SUMMARY OF THE INVENTION: Fish entering a fish storage tray by a motive device is transferred to a container. The container with the accumulated fish is moved to the downstream part of the upper tray located adjacent to the fish storage tray and having a common side wall with it. After adaptation to the marking of the upper tray, the fish transplanted into the top tray continues to migrate. 2 ill.

Description

FIELD OF THE INVENTION The invention relates to hydraulic structures, and in particular, to devices for passing fish from a downstream end of a waterworks to an upper one.

An object of the invention is to IMPROVE the efficiency of a fish passage facility.

In Fig "1 shows a fish passage structure, a top view; figure 2 is a section aa in figure 1.

The fish passage structure consists of a fish storage tray 1, an induction device 2, a shutter 3, a fish barrier 4, a transport container 5 with a horizontal induction grid 6, an upper tray 7 in which a fish barrier J and a gate 9 are installed, and a bottom shutter 10, in front of which there is an opening 11 for the fish to stand and the weed guard 12, which is separated from the top tray 7.

Fish passage works as follows.

The fish entering the fish storage current 1 is concentrated by means of a stimulating device 2 in a transport container 5, in which, by lifting the horizontal motive grid 6, the accumulated fish is examined and recorded. Next, the container 5 with the accumulated fish by means of lifting and transport mechanisms is moved from the storage tray 1 to the lower part (along the Current) of the upper tray. 7. Having deepened the container 5 in the tray 7 by 1.5-2 m, by lifting the motive grid 6, the fish is unloaded from the container 5.

The fish transplanted into the upper tray 7, in accordance with its biological characteristics, being in a stressful condition, sinks into the lower horizontal waters and settles in mark 11. Short-term (throwing) movement of individual fish upstream is also possible.

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At the same time, by choosing the optimal length of the side wall (in particular, located closer to the floodgates of the dam) of the upper tray 7, and in this embodiment, the fish cannot get into the water discharge zone, i.e. its involuntary slope is excluded.

After a certain period of time (adaptation period), the fish accumulated in tray 7 leaves the mark 11 upstream and continues to migrate. There are a number of positive factors that accelerate the adaptation process. Firstly, due to the slope of the bottom of the outlet tray 7 towards the downstream, a gradual vertical increase in the flow velocity gradient is observed, which improves the orientation in the space of the transplanted fish. At the same time, it is also possible to create the necessary high-speed regime of water flow in the tray 7, depending on the daily activity of various fish species. Secondly, due to the gradual concentration of transplanted fish in tray 7, it is possible to form separate fish species in schools, which also speeds up the adaptation process and increases migration activity.

The bottom valve with adjustment depending on the main valve serves to create the necessary hydraulic mode in the zone of mark 11, as well as to flush the mark 11 (with i fully opened and raised net 8) from sediment, sludge and debris. i

Claims (1)

The use of the invention will significantly increase the productivity of the fish passage structure (while i the productivity of the fish passage is limited only by the time of accumulation and transplantation of fish) it is safer to pass the fish f B upstream, and also, no less important, it can be used (with relatively low capital costs - significantly improve the parameters of the majority of existing fish processing facilities. Formula of the invention Fish processing facility, including fish storage a drain with an upstream shutter and an induction device connected to the downstream of the hydraulic system, an upstream tray connected to the upstream and having an autonomous hydraulic control system, and a transport container with an ichthyological platform, characterized in that, in order to increase work efficiency, the upstream tray is located adjacent to the fish storage tray and has a side shift common with it 0, while the bottom of the upper tray has an ukdon in the direction of the downstream end and ends with a fish stock, and the autonomous system The hydraulic mode control includes a bottom and a main shutter located above it, located behind the receiver in the downstream part of the upper chute. s about s 35 Flow FIG. 7 FIG. 2