SU1355661A1 - Fish duct - Google Patents

Abstract

The invention relates to hydraulic engineering and can be used on rivers and reservoirs for passing fish for spawning and rolling fry. The purpose of the invention is to increase work efficiency by providing double-sided fish passes. The fish pass includes a l / current 1 connecting the upper reach 2 of the hydraulic structure with the lower reach 3. Tray 1 on the vertical axis 8 is rotatably mounted wheel 5 with perforated vanes 6 bent in the direction of rotation 6. Wheel 5 is equipped with a drive 9 for frequency control rotation The device is provided with an additional piping, through the outlets of which 12,13,14 water is supplied for regulating the feed wheel 5 and maintaining the flow velocity that attracts the fish. Walls 4 of tray 1 are equipped with flow controllers 15 and 16 for flow. The fish approaching the downstream 3 to the wheel 5 is captured by the blades 6 and transferred to the upper reach 2. The rolls of the young, between the blades 6, are smoothly transferred to the lower reach 3. 1 c.p. f-ly, 3 ill. / / i СЛ ate sd O5 05

Description

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The invention relates to hydraulic engineering and can be used on rivers and reservoirs to pass fish for spawning and fry.

The purpose of the invention is to increase the efficiency of work by providing bilateral fish passes.

1 shows a fish pass in section, side view; figure 2 is the same, top view; on fig.Z - paddle wheel device, in a perspective view.

A fishboat is debrising from tray 1, connecting the upper reach 2 of a hydraulic structure (not shown) with the lower reach 3, Tray 1 is made with side walls A bent in plan, between which a wheel 5 with blades 6 is mounted, filled with perforation 7. The impeller 5 is mounted on the vertical axis 8 rotatably with the help of the actuator 9. The height of the blades 6 is commensurate with the maximum level of the upstream 2, and the area of the perforation days 7 is selected within 0.1-0.3 of the total area of the blade 6.

At the bottom of the tray i, there is an additional pipeline 10, equipped with a hydraulic seal Pi having outlets 12–14 covered by grates. Output 12 serves to feed the stream and maintain its speed in the lower pool 3. Outputs 13 and 14 serve to equalize the flow in the wheel 5 during the transitional processors. ah, arising from its rotation.

In the downstream 3 compartment, walls 4 of tray 1 are equipped with a flow control valve 15 connected kinematically to a sensor (not shown) Level of upstream 2 and serving to regulate the flow rate At the entrance to the wheel 5. In the upstream section 2 of wall 4 are provided with a widener flow regulator 16, which serves to enable the rotation of the impeller 5 to be controlled depending on the change of the upstream 2.

To perform repair work, tray 1 is equipped with gates 17.

Fish navigator works as follows.

The migratory fish, usually using bottom layers, is attracted

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5 0 5

0 5

0 5 0

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the stream created in the tray 1 in the alignment of the lower pool 3 swims into the area of action of the wheel 5, where the blades 6 are gently pushed to the output of the upper pool 2. At the same time, the young and fry use the upper layers of the stream from the upper pool 2 and freely proceeding through the device, pushed by the blades 6 to the lower pool 3, where they are picked up by a bypass flow and are carried further. Thus, the blades 6 of the wheel 5 work as pushing in the lower layers for fish migrating to spawn and choosing a counter-current, and in the upper layers for fry swimming downstream to the Lower pool 3. At the same time, the blades 6 serve as a supporting structure and provide the necessary pressure. "

The frequency of rotation of the blades 6 is regulated by the gearbox of the drive 9. It is small, and therefore the blades 6 cannot injure the fish passing through the device, and especially the young.

The launch and adjustment of the fish pass is performed as follows.

Opening repair gates 17, using a pin-type flow control valve 16, set the wheel rotation frequency 5 (5-6 rpm), which should not exceed 0.8 speed of the draw flow in the downstream 3. Further control of the rotation frequency is performed in automatic mode 9. Having determined the high-speed flux in the tray 1 and at the inlet of the wheel 5, make precise adjustment of the flux-attracting flow by the slide valve 15 to the main type of fish going in this period. Then a smooth addition of water through the pipe 10 sets the speed attracting flow, identical to the flow at the inlet of the impeller 5 fish-pass. At the same time, at all points of the structure, the velocity parameters of the attracting flow will be equal, i.e. The fish pass is prepared for work on the fish pass in automatic mode.

The fishboat is in operation and is structurally simple; it is independently cleaned of soils and foreign objects when the blade 6 of the wheel 5 is rotated. On a 180 head jet of the upstream 2. It is advisable that the length be; Tray 1 from the downstream 3 did not exceed 20m and it was mounted on a previously studied, ecologically developed route of fish migration for a given river basin

Claims (1)

1. The switch, which includes the upper and lower connectors of the hydraulic structure, has a conduit installed in it with a rotatable flow rate reducing element, characterized in that, in order to increase the efficiency of the operation by providing two-way fish passage, it is equipped with a drive regulating the frequency of rotation of the element reducing the flow rate and the additional pipeline connected to the upper bay with several outlets, at the same time the element reducing the flow rate is designed as the vertical axis of the impeller with perforated flexures in the direction of its rotation of the blades, and the water conduit is made in the form of a tray with side walls concave at the installation site of the impeller around the outer edges of the impeller blades, and the outlet holes of the additional pipeline are made in the bottom of the tray from the downstream in front of the impeller and in the zone of its rotation, as well as at the wall of the tray, where the blades of the wheel move in the direction of the downstream. 2, the fish pass, 1, differs from the fact that, in order to regulate the work of the fish pass, on the concave side walls of the tray, slide gate flow controllers are installed. / 7 1 5.6 8 ig / If III figl (rig. 3 Editor I. Segl Nick Compiled by B. Pospelov Tehred A. Kravchuk Order 5754/26 Circulation 607 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Proofreader M.Sharoshi