RU62616U1 - FISH PROTECTION HEAD - Google Patents

Abstract

The invention relates to hydraulic structures, in particular, to fish protection devices as part of water intake structures and is intended to protect juvenile fish from getting into water intake structures. The fish protection device of the water intake structure includes a filter located in the watercourse, made in the form of a frame with side filtering and blind end surfaces and connected to the suction pipe. The frame is made in the form of a drum and is oriented coaxially with the suction pipe. A shaft is mounted rotatably on the drum axis, one end of which is fixed on the stops in the suction pipe, and a cross is rigidly fixed on the other, which extends beyond the end surface of the drum. Two other crosses are placed on the shaft inside the drum at its end surfaces, and the impellers are located in the suction pipe. The ends of the opposite inner crosses are connected in pairs by a device for cleaning the inside of the filter surface of the drum. Devices for cleaning the filter surface of the drum from the outside are fixed at the ends of the outer cross. When the crosses rotate, the cleaning devices moving along the outer surface of the filter create a stream of water that repels juvenile fish. The invention provides an increase in the efficiency of removal of juvenile fish. 4 s P. f-ly, 3 ill.

Description

The invention relates to hydraulic engineering, in particular, to fish protection devices and structures arranged as part of water intake structures, in particular to suction pipes of pumps, and is intended to protect juvenile fish from getting into water intake structures.

Known fish protection device (RU 2055110, "Fish protection device", IPC E 02 B 8/08 publ. 02/27/1996), which includes a filter located in the stream and made in the form of a lattice frame filled with a filter element.

The disadvantage of this fish protection device is the lack of drive efficiency.

Known fish protection device (RU 2023797, "Fish protection device", IPC E 02 B 8/08 publ. 11/30/1994), which includes a suction head, with a vertical section buried below the level of the watercourse, and a visor made in the form of a flat disk attached to the bottom of the suction head.

The disadvantage of this fish protection device is the low efficiency of removal of juvenile fish.

Known fish protection device (RU 2013491, "Fish protection device", IPC E 02 B 9/08 publ. 05/30/1994), which includes a perforated drum mounted for rotation, and a flute with nozzles.

The disadvantage of this fish protection device is that it is necessary to create a certain water pressure on the flute, which complicates the operation of the device.

The invention solves the problem of increasing the efficiency of the device.

In the known fish protection device of an intake structure comprising a filter located in a watercourse and made in the form of a frame with side filtering and blind end surfaces, the frame connected to the suction pipe is made in the form of a drum and is oriented coaxially with the suction pipe. A shaft is mounted rotatably on the drum axis, one end of which is fixed on the stops in the suction pipe, and a cross is rigidly fixed on the other, protruding beyond the end surface of the drum, in addition, two other crosses are placed inside the drum at its end surfaces, and the impeller in the suction pipe, and the ends of the opposing inner crosses are paired by a device for cleaning the inner side of the filter surface of the drum, and at the ends of the outer crosspiece are attached tools for cleaning the filter surface of the drum from the outside. The impellers are located at an angle of 45, which allows you to develop a maximum speed of rotation of scaffolds, as a result of moving brushes on the outer surface of the filter create a flow of water that repels juvenile fish.

The application is accompanied by graphic material illustrating the proposed device, which shows:

figure 1 - fish head, longitudinal section;

figure 2 - section aa in figure 1;

figure 3 is a section bB in figure 1.

The following notation is used in the diagrams:

1 - suction pipe; 2 - drum; 3 - perforated surface; 4 and 5 - blank surfaces; 6 - shaft; 7 - emphasis with bearings; 8 - impellers; 9 - internal crosses; 10 - an external crosspiece; 11 - an axis with bearings; 12 - rollers; 13 - pins with brushes.

Fish head works as follows. When the pump is turned on (pump not shown), water begins to move through

the lateral perforated surface 3 of the drum 2 and enters the suction pipe 1, in which along the axis of the drum 2 and the suction pipe 1 is placed a shaft 6 having stops 7 with bearings, providing rotation of the shaft. The impellers 8 and the inner crosses 9 and the outer 10 are mounted on the shaft 6, all of which are rigidly fixed to the shaft. The effect of water on the impeller blades 8 leads to the rotation of the shaft 6 and the crosses 9 and 10. On the crosses 9, the axles 11 are rigidly fixed with bearings, which allows the inner rollers 12 to rotate. On the outer crosspiece 10, pins with brushes 13 are rigidly fixed.

The operation of the device is possible in reservoirs, in the absence of a transit current (ilmen, lake, pond, estuary, reservoir), as well as at low speeds.

The present invention has a simple design, which allows to significantly simplify the layout of the water intake device, to increase the reliability of its operation and the effectiveness of protecting juvenile fish from getting into the water intake.

Claims (5)

1. Fish protection device, including a filter located in the watercourse, made in the form of a frame with side filtering and blind end surfaces and connected to the suction pipe, characterized in that the frame is made in the form of a drum and is oriented coaxially with the suction pipe, and is installed along the axis of the drum rotatable shaft, one end of which is fixed on the stops in the suction pipe, and on the other, protruding beyond the end surface of the drum, a cross is rigidly fixed, in addition, two other crosses are placed They are located on the drum shaft at its end surfaces, and the impellers are in the suction pipe, and the ends of the opposite inner crosses are paired with a device for cleaning the inside of the filter surface of the drum, and devices for cleaning the filter surface of the drum are fixed at the ends of the outer cross. 2. Fish protection device according to claim 1, characterized in that the device for cleaning the inside of the filter surface of the drum is made in the form of a removable roller of elastic material, and the device for cleaning the outside of the filter surface is in the form of a pin with brushes. 3. Fish protection device according to claim 1, characterized in that the lateral filtering surface of the drum is made with perforation. 4. Fish protection device according to claim 1, characterized in that the device for cleaning the inside of the filter surface of the drum is made in the form of pins with brushes. 5. Fish protection device according to claim 1, characterized in that the device for cleaning the outer filter surface of the drum is made in the form of rollers of elastic material.