RU2790135C1 - Device for reservoir aeration - Google Patents

Abstract

FIELD: aeration equipment.

SUBSTANCE: device for reservoir aeration is proposed. The invention can operate in summer for enrichment of lower water layers by their mixing and in winter for creation of an ice-free glade to prevent the formation of oxygen deficiency for inhabiting ichthyofauna. The device for reservoir aeration includes platform 6 with supports in the form of floats 7, anchor 8, screw pump 5, in case 4 of which water-outlet windows 11 and screw water-lifting shaft 3 are located, wind drive 1 with vertical rotor 2 connected by a coupling to screw water-lifting shaft 3, corrugation pipe 12 with filter cup 13. In case 4 of pump 5, between its end and corrugation pipe 12 with filter cup 13, nozzle 14 is installed, an inner diameter of which is more than an inner diameter of case 4. Screw water-lifting shaft 3 of pump 5 is made with a different diameter of turns 10, wherein turns of a greater diameter of the screw are placed in nozzle 14, and turns of a smaller diameter are placed in case 4 of pump 5.

EFFECT: invention allows for an increase in a speed of lifting of warm water of a near-bottom layer to its upper layer and reduction in its heat losses, which is achieved with almost all the same overall and weight characteristics by increase in a speed of passage of a water column along an upper part of a pump case; efficiency of the operation of a device is also achieved due to its installation in a non-frozen water period, when it is easier to determine a place of installation and easier to deliver the device to this place, so the device is not required to fix to the bottom with supports, so just an anchor is lowered.

1 cl, 2 dwg

Description

The invention relates to the field of aeration of a reservoir and can work in summer to enrich the lower layers of water by mixing them and in winter to create a non-freezing polynya in order to prevent the formation of an oxygen deficiency in it for the living ichthyofauna.

A device is known for aerating a reservoir in winter due to the formation of a polynya on the ice surface of a water basin containing a platform with supports, a body of a water-lifting mechanism with water-output windows and a water-lifting shaft inside, a drive with a vertical rotor, (RU 2295001, 10.03.2007). The disadvantage of this device is that it can only be used where it is possible to supply electricity from stationary or local sources, which leads to high financial costs.

A device for aerating reservoirs used for the purpose of fish breeding to form a polynya in ice, including a platform with supports, a body of a water-lifting mechanism with water-output windows and an auger pump with a water-lifting shaft inside, a wind drive with a vertical rotor connected to a water-lifting shaft (RU 2400063, 27.09.2010 ).

The disadvantage of this device is that at low speeds of rotation of the rotor, which often occur at low speeds of the wind flow, when the water is lifted by the auger, it enters between the body of the water-lifting mechanism and the ends of the turns of the auger. This leads to mixing of warm bottom water with colder water of the upper layer, and lengthens the process of polynya formation in time. The same thing happens if water is not taken from the bottom layer.

The closest in its technical essence is a device for the formation of a polynya in ice, including a platform with supports, an auger pump, in the body of which there are water outlet windows and an auger water-lifting shaft, a wind drive with a vertical rotor connected by a coupling to a screw water-lifting shaft (RU 2774140, 06/16/2022 ).

The disadvantages of this device is that it can only be installed on hardened ice. Such ice does not happen every year and not in all regions. In addition to being dangerous, this work is labor intensive. Requires drilling a lot of holes in order to put exactly on the wintering for fish and another hole. Another disadvantage is its low efficiency (since the polynya appears with a time delay of one and a half to two weeks. This is due to the fact that the temperature difference between the bottom water and the water immediately under the ice in shallow water bodies is small 1-1.5 ° C, in addition, while water rises through the pump housing, it loses in the temperature difference, which eventually reaches several tenths of a degree.Especially low efficiency of such a device in low-wind winters.Increasing the diameter of the pipe body and the diameter of the screw feeding it leads to high metal consumption, and as a result, increased energy consumption of the structure .

The problem solved by the present invention is to improve the efficiency of the device.

The technical essence that this device solves is to increase the rate of rise of the “warm” water of the bottom layer to its upper layer and reduce its heat loss. This is achieved, with almost all the same overall and weight characteristics, by increasing the speed of the passage of the water column along the upper part of the pump housing. The efficiency of the device is also achieved by the fact that it is achieved by installing it during the period of unfrozen water, when it is easier to determine the installation site and easier to deliver it to this place. Then you do not need to fasten it to the bottom with supports, but simply release the anchor.

The present problem is solved by the fact that in a device for aeration of a reservoir, including a platform with supports, a screw pump, in the body of which there are water outlet windows and a screw water-lifting shaft, a wind drive with a vertical rotor connected by a coupling with a screw water-lifting shaft, a corrugated pipe with a filter glass, a platform additionally contains an anchor, the supports are made in the form of floats, in the pump housing between its end and the corrugated pipe with a filter cup there is a nozzle whose inner diameter is larger than the inner diameter of the housing, the pump screw is made with different diameter coils, and the coils of a larger diameter of the screw are placed in the nozzle, and the coils smaller diameter in the pump housing.

In FIG. 1 general scheme of the device during operation in the winter period (with floats frozen into the ice).

In FIG. 2 view of the wind drive device from above.

The device consists of a wind drive 1 connected by a vertical rotor 2 with a water-lifting shaft 3 placed in the housing 4 of the screw pump 5 and installed on the platform 6, mounted on the water on hollow floats 7, and to the bottom of the reservoir at anchors 8 by stretch marks 9. The screw pump 5 contains a housing 4 and placed in it a screw water-lifting shaft 3 with turns 10 of the screw. In the upper part of the housing 4, water outlet windows 11 are made, and to the pump housing, between its end and the corrugated pipe 12 with a filter cup 13, a nozzle 14 is installed, the inner diameter of which is larger than the inner diameter of the housing 4 of the pump 5. The auger water-lifting shaft of the pump 5 is made with a different diameter turns. Moreover, the turns of a larger diameter of the auger water-lifting shaft 3 of the pump 5 are placed in the nozzle 14, and the turns of a smaller diameter in the housing 4 of the pump 5.

The device works as follows. In autumn, even on unfrozen water, wintering pits of fish are determined. They are usually found in the deepest part of the reservoir. Devices for aeration of the reservoir are towed onto these pits. Water is pumped into hollow floats 7 and melted for stability. In addition, anchors 8 are wound on the sides and installed on braces 9.

The aeration device begins to work even before the onset of frost and the formation of an ice cover on the reservoir, preventing its formation in the area where the floats are installed. An obstacle to the formation of an ice cover is the rise of "warm" water from the bottom of the reservoir to its surface layer. Due to the large volume of water taken (due to the larger diameter of the coils), water, entering the housing 4 of the screw pump of a smaller diameter, increases the speed of its passage through it, does not have time to reduce the temperature gradient and pours out through the outlet windows 11.

The corrugated pipe 12, with the filter glass 13, is placed at the lower end of the nozzle 14 and set so that it shrinks somewhat when the filter glass touches the bottom of the reservoir. A vertical rotor with a wind drive is connected to the water-lifting shaft by means of a coupling. The wind flow at wind speeds of more than 1 meter per second begins to rotate the blades of the wind drive 1, which, in turn, drives the water-lifting shaft of the screw pump through the vertical rotor.

Claims (1)

A device for aeration of a reservoir, including a platform with supports, a screw pump, in the body of which there are water outlet windows and a screw water-lifting shaft, a wind drive with a vertical rotor connected by a coupling to a screw water-lifting shaft, a corrugated pipe with a filter cup, characterized in that the platform additionally contains an anchor , the supports are made in the form of floats, in the pump housing between its end and the corrugated pipe with a filter cup there is a nozzle, the inner diameter of which is greater than the inner diameter of the housing, the pump screw is made with different diameter turns, and the turns of the larger diameter of the screw are placed in the nozzle, and the turns of the smaller diameter in the pump housing.

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