Water degassing system before incubation of sturgeon eggs on "osetr 16" incubation apparatus

Abstract

FIELD: devices for degassing water.SUBSTANCE: invention relates in particular to equipment for preparing water before incubating eggs, and can be used to remove excess gases from water used for incubating sturgeon eggs in the Osetr 16 incubation apparatus. The system for degassing water before incubating sturgeon eggs in the Osetr 16 incubator consists of a pontoon on which two tanks with a diameter of 2000 mm and a height of 500 mm are installed, each on its own metal support, the Osetr 16 incubator, a degasser, polyvinyl chloride pipelines and two submersible pumps. The tanks are made open from propylene and are located one under the other with the lower tank shifted towards the Osetr 16 incubator. At the bottom of the upper and lower tanks there are drain holes with a diameter of 140 mm, each of which is connected by a conical adapter to its overflow pipeline with a diameter of 100 mm, consisting of a horizontal part with a length of 1100 mm, a vertical part with a length of 800 mm and a drain part. The vertical part of the overflow pipelines is directed upwards, the drain part of the overflow pipeline of the upper tank is located above the lower tank, and the drain part of the overflow pipeline of the lower tank is located above the reservoir. One submersible pump is located in the reservoir, an intake pipeline with a diameter of 50 mm is connected to it and has a shut-off valve, the drain part of which is located above the upper tank. Another submersible pump is installed in the lower tank and connected to a filling pipeline with a diameter of 30 mm. The degasser is made in the form of external and internal polyvinyl chloride pipes located on the same axis. The internal pipe with a diameter of 30 mm and a length of 3,120 mm is installed in an external pipe with a diameter of 160 mm and a length of 3,070 mm, which has a row of holes with a diameter of 5 mm along its entire length and a distance of 45 mm between them. The internal pipe has two rows of holes with a diameter of 2 mm along its entire length, the distance between which is 23 mm, the distance between the rows is 30 mm. The external pipe is made with plugs on both sides, through the holes of which the internal pipe is installed with its holes upwards, and which on one side is connected to the filling pipeline, and on the other side a shut-off valve is installed behind the outer pipe outlet. The degasser is installed at a height of 210 mm from the bottom of the water supply trough of the Osetr 16 incubation apparatus by means of three equally spaced brackets. The pump is electrically connected to a single-phase network with a voltage of 230 V.EFFECT: degassing of water before incubation of sturgeon eggs in the Osetr 16 incubation apparatus, characterized by an oxygen content of 10 mg / l at a level of 100% saturation of water with oxygen.1 cl, 2 dwg

Description

[0001] The invention relates to devices for degassing water, in particular to equipment for preparing water before incubating eggs, and can be used to remove excess gases from water used for incubating sturgeon eggs in the Osetr 16 incubation apparatus.

[0002] A water degasser for removing carbon dioxide is known, comprising a rectangular or circular body in plan, in which a volume of water is blown through with air during their combined movement, a water supply pipeline, a degassed water outlet pipeline, an air supply manifold, air distribution pipes with holes, a perforated bottom for uniform water drainage, a tray space, a drainage pipeline, and is equipped with rows of horizontal partitions with passages in a staggered pattern, installed along the height of the degasser. It operates in a mode of increased water countercurrent speeds from 20 to 120 m3 / h. (Patent of the Russian Federation No. 2620119, published on May 23, 2017).

[0003] A device is known for degassing water, comprising a cylindrical body with water supply pipes and a steam-gas outlet, a container for accumulating degassed water with pipes for discharging water to the consumer, a nozzle head, wherein it is equipped with a reflector, a collector located coaxially to the body with a perforated helical plane and Raschig rings placed on it, an ultrasonic bath, an electrolyzer installed on the water supply pipe, which makes it possible to change the acidity of the degassed water, a collector hydraulically connected to the water supply pipe, at one end of which a nozzle head is placed, and the other is made in the form of a heel located in the ultrasonic bath, an oscillation damper in the form of bellows, installed between the collector and the electrolyzer.The nozzle head is located in the upper part of the housing and uses centrifugal auger nozzles. The deflector is designed as a cone and mounted in the upper part of the housing at a distance of 1.5-2 nozzle head diameters from the spray plane. (RU Patent No. 2171230, published July 27, 2001).

[0004] A degasser produced by "Aquafermer" is known, where a perforated sheet serves as a degasser loading; in such systems, the flow is broken up by mesh or perforated sheets installed in several levels (https: / / www.fishnet.ru / news / aquaculture_news / degazator-proizvodstva-akvafermer-uzel-bez-kotorogo-tehnologiya-uzv-ne-budet-polnocennoy-i-ne-smozhet-pravilno-rabotat-foto-video- / ?ysclid=mlqehp4i7w988385217).

[0005] Common disadvantages of known devices include low gas removal efficiency, as well as the inability to use a water degassing system before incubating sturgeon eggs.

[0006] The task is to remove excess gases from the water before incubating sturgeon eggs.

[0007] Technical result - degassing of water before incubation of sturgeon eggs in the incubation apparatus "Osetr 16", characterized by an oxygen content of 10 mg / l at a level of 100% saturation of water with oxygen.

[0008] The technical result is achieved by a water degassing system before incubating sturgeon eggs in the Osetr 16 incubation apparatus, characterized by the fact that it consists of a pontoon on which two tanks with a diameter of 2000 mm and a height of 500 mm are installed, each on its own metal support, the Osetr 16 incubation apparatus, a degasser, polyvinyl chloride pipelines and two submersible pumps, while the tanks are made open from propylene and are located one under the other with the lower tank shifted towards the Osetr 16 incubation apparatus, at the bottom of the upper and lower tanks there are drain holes with a diameter of 140 mm, each of which is connected by a conical adapter to its overflow pipeline with a diameter of 100 mm, consisting of a horizontal part with a length of 1100 mm, a vertical part with a length of 800 mm and a drain part, while the vertical part of the overflow pipelines is directed upwards, the drain section of the overflow pipe of the upper tank is located above the lower tank,and the drain part of the overflow pipeline of the lower tank is located above the reservoir, one submersible pump is located in the reservoir, to which is connected an intake pipeline with a diameter of 50 mm with a shut-off valve, the drain part of which is located above the upper tank, another submersible pump is installed in the lower tank and connected to a filling pipeline with a diameter of 30 mm, the degasser is made in the form of external and internal polyvinyl chloride pipes located on the same axis, while the internal pipe with a diameter of 30 mm, a length of 3120 mm is installed in an external pipe with a diameter of 160 mm and a length of 3070 mm, which has a row of holes with a diameter of 5 mm along its entire length and a distance of 45 mm between them, and the internal pipe has two rows of holes with a diameter of 2 mm along its entire length, the distance between which is 23 mm, the distance between the rows is 30 mm, the external pipe is made with plugs on both sides, through the holes of which the internal pipe is installed with its holes upwards,and which is connected on one side to the filling pipeline, and on the other side, a shut-off valve is installed behind the outlet from the outer pipe, the degasser is mounted at a height of 210 mm from the bottom of the water supply trough of the Osetr 16 incubation apparatus by means of three brackets equally spaced from each other, the pump is electrically connected to a single-phase network with a voltage of 230 V.

[0009] The invention is explained by drawings, where Fig. 1 shows the general diagram of the degassing system, and Fig. 2 shows the degasser.

[0010] The water degassing system before incubation of sturgeon eggs on the incubation apparatus "Osetr 16" consists of:

[0011] 1 - pontoon

[0012] 2 - upper container

[0013] 3 - lower capacity

[0014] 4 - metal supports,

[0015] 5 - incubation apparatus "Sturgeon 16",

[0016] 6 - drain holes of the upper and lower tanks

[0017] 7 - conical adapter

[0018] 8 - overflow pipe of the upper tank

[0019] 9 - overflow pipe of the lower tank

[0020] 10 - drain part of pipelines

[0021] 11 - Submersible reservoir pump

[0022] 12 - intake pipeline

[0023] 13 - shut-off valve

[0024] 14 - Bottom tank submersible pump

[0025] 15 - filling pipeline

[0026] 16 - outer pipe of degasser

[0027] 17 - degasser inner pipe

[0028] 18 - outer pipe side plugs

[0029] 19 - holes in plugs

[0030] 20 - brackets

[0031] 21 - holes of the outer pipe of the degasser

[0032] 22 - holes of the inner pipe of the degasser

[0033] 23 - trough of the incubation apparatus "Osetr 16"

[0034] Before incubating sturgeon eggs, degassing is necessary. If the growing medium becomes oversaturated with gas, excess gases can be absorbed by the eggs, leading to gas bubble disease (the formation of gas emboli in the tissue). Degassing is especially important in hatcheries located near hydroelectric power plants (HPPs), whose discharges saturate the water with oxygen at 12 mg / L, with a saturation level of 150% or higher.

[0035] The "Osetr 16" incubator is used for incubating fertilized, de-glued sturgeon eggs. Incubation of the eggs occurs in a suspended state, which is maintained by the oscillating movements of the hatchery boxes through the periodic supply of water from tilting buckets. After hatching, the prelarvae are transferred through drainage trays to the larval collection chamber. Incubation of eggs in the improved, silent "Osetr 16" incubator promotes a higher hatch rate and increases their survival rate.

[0036] The design of the overflow pipelines of the upper and lower tanks, consisting of horizontal, vertical and drain parts, where the vertical part of each overflow pipeline is directed upwards - is used to regulate the water level in the system during its cyclic operation, during the incubation period of fertilized eggs in the incubation apparatus "Osetr 16" (this is approximately 5 days, depending on temperature, oxygen, etc.).

[0037] The creation of two rows of holes with specified geometric characteristics along the entire length of the degasser’s inner pipe ensures the supply of the required jet pressure, which, reaching the inner wall of the outer pipe, breaks against it, and thus the water is finally degassed.

[0038] The design of the outer pipe with specified geometric characteristics ensures the flow of already degassed water directly into the Osetr 16 incubation apparatus.

[0039] The use of polyvinyl chloride pipelines and propylene tanks ensures the environmental friendliness, durability and ease of installation of the degassing system structure and the absence of corrosion.

[0040] Example of specific implementation.

[0041] The implementation of the declared method for degassing water before incubating sturgeon eggs (e.g. beluga, stellate sturgeon, sterlet) was carried out at the sturgeon farm of Rybosetr LLC, which operates at the source of the Akhtuba River in close geographical proximity to the Volga Hydroelectric Power Station lock (about 300 m), due to the discharge of lock water from which additional feeding of the Akhtuba is carried out.

[0042] Pontoon 1 with rigidly fixed metal supports 4 with tanks 2, 3 and incubation apparatus “Osetr 16” 5 was installed on the water.

[0043] The degasser consisted of an outer (16) and inner (17) PVC pipe located on the same axis. The inner pipe (17) had a diameter of 30 mm and a length of 3120 mm. It was installed inside an outer pipe (16) with a diameter of 160 mm and a length of 3070 mm. The outer pipe had a row of 5 mm holes (21) along its entire length, spaced 45 mm apart. The inner pipe (17) had two rows of 2 mm holes (22) along its entire length, spaced 23 mm apart, and spaced 30 mm apart. These geometric characteristics ensured sufficient water pressure for final degassing.

[0044] The outer pipe 16 was fitted with plugs 18 on both ends. The inner pipe 17 was installed into the openings 19 of the plugs 18, with its openings 22 facing upward. One end was connected to the filling pipe 15, and on the other end, a shut-off valve 13 was installed behind the outlet of the outer pipe to drain excess water.

[0045] All pipe connections were made in a known manner, for example using PVC corners.

[0046] The degasser was attached to the Osetr 16 incubation apparatus 5 at a height of 210 mm from the bottom of the water supply trough by means of three brackets 20 equally spaced from each other.

[0047] Water was collected from the Akhtuba River (the reservoir depth at this location is 3000 mm) using a submersible pump 11 (in our case, this is a pump with Q max 280 1 / min, H max 11.5 m, W 230 V 50 Hz). The pump was powered by a single-phase network with a voltage of 230 V. Water was supplied through an intake pipe 12. Water was supplied continuously, and its level rose in the upper tank 2. When the water fell, the first partition of the water occurred, i.e. the first stage of degassing took place. Upon reaching the required level in the upper tank 2, the water entered the horizontal part of the overflow pipe 8 through the drain hole 6 along the conical adapter 7, where it rose along its vertical part and overflowed through the drain part 10 into the lower tank 3. That is, The water overflowed and broke into the lower tank 3, thereby ensuring the required water level in the upper tank 2, thus completing the second stage of water degassing.

[0048] At the same time, the water level in the upper tank 2 and in the overflow pipe 8 rose simultaneously. The water level in the lower tank 3 and in the overflow pipe 9 also rose simultaneously.

[0049] When the water in the lower tank 3 rose above the required level, the water rose up along the horizontal part of the overflow pipe 9 and overflowed back into the Akhtuba River through the drain part 10, thereby maintaining the required water level in the upper tank 2.

[0050] The second submersible pump 14 (in our case it is Q max 280 1 / min, H max 11.5 m, W 230 V 50 Hz) supplied water from the lower tank 3 through the filling pipeline 15 into the degasser, where through the openings 22 of the inner pipe 17 the water under pressure broke against the walls of the outer pipe 16 (this is the third stage of water degassing) and through its openings 21 naturally flowed into the incubation apparatus "Sturgeon 16" 5, equipped with 16 trays (this is the fourth, final stage of water degassing).

[0051] When flowing into the Osetr 16 incubation apparatus, the water was characterized by an oxygen content of 10 mg / l at a saturation level of 100%.

[0052] Thus, the declared water degassing system before incubation of sturgeon eggs on the Osetr 16 incubation apparatus provided the supply of water characterized by an oxygen content of 10 mg / l at a level of 100% saturation of water with oxygen.

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