JP3110189B2 - Aeration system for moss using land-based power transmission marine aquaculture - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aeration apparatus for marine aquaculture using land-based power transmission.

[0002]

2. Description of the Related Art In recent years, since the dissolved oxygen concentration in seawater has been gradually decreasing due to seawater dirt and the like at sea surface farms, the dissolved oxygen concentration has been increased to reduce the mortality and growth of cultured fish and shellfish. In addition, the following aeration apparatus for marine aquaculture has been conventionally known. That is, as shown in FIG. 5, a net cage 013 containing cultured fish is installed on the sea surface 014, an FRP barge 01 is installed in the vicinity of the net fish 013, and a diesel engine 02 is provided inside the FRP barge 01. A screw blower 04 driven via a V-belt 03 is provided. Screw blower 04 is connected to air suction pipe 0 from air filter 07.
Air is sucked in through 8 and compressed air is discharged through an air discharge pipe 09. The compressed air discharged from the screw blower 04 passes through the vinyl hose 011 and is discharged as air bubbles from the air diffuser 012 at the bottom of the mesh box 013 to increase the amount of dissolved oxygen in the mesh box 013. Here, the fuel tank 05 and the fuel tank 06 are tanks for storing fuel consumed by the diesel engine 02, and the safety valve 010 is an air release valve when the pressure of the air discharge pipe 09 abnormally increases.

[0003]

However, this type of conventional aeration equipment for sea-cultured fish uses a diesel engine as a power source, and therefore has the following problems. (1) Light oil or heavy oil must be installed in a barge at sea as fuel for diesel engines, and lubricating oil for diesel engines is also installed in diesel engines. There is a risk of effluent marine pollution. (2) Starting and stopping the diesel engine requires manpower such as rotation speed control. Therefore, in order to start and stop the device, it is necessary for the attendant to go to a barge near the sea surface on the sea using a ferry. . Therefore, frequent starting and stopping are difficult, and unloading the ferry during stormy weather is dangerous. (3) If it is desired to start and stop the diesel engine at a fixed time every day, the attendant must go to the barge near the sea surface on the ferry each time, which requires a lot of manpower. (4) Since the diesel engine is mounted on the barge,
It requires a large barge, increases the occupied area of the sea surface, and causes engine noise to adversely affect fish and shellfish.

[0004] The present invention has been proposed in view of such circumstances, without storing fuel at sea barge, onshore
Supply of inexpensive commercial AC power from the quiet
While receiving the lower drive for AC motors, a labor Ministry of human and safe work by remote control no longer fear to cause marine pollution, have
There efficiently line the aeration of erasing, sunlight enough
And to provide aeration device when not cormorants economical land transmission type sea aquaculture cages subjected to.

[0005]

For this purpose, the invention of claim 1 includes a barge having a built-in blower which floats on the sea surface, is moored, and is driven through an AC motor by electric power supplied from a land via a cable; The breeder is moored on the sea surface near the barge and in the sea, and is provided with an aquaculture breeder that introduces air discharged from the blower of the barge and generates air bubbles from an air diffuser disposed at a bottom portion. The sea surface is open to the quiet sky.

According to a second aspect of the present invention, in the first aspect of the present invention, when the current supplied to the barge via the power cable disposed on the land-based power supply facility is short-circuited or the ground insulation resistance of the cable is an allowable value. It is characterized by having an earth leakage breaker that cuts off the power supply when it drops below.

According to a third aspect of the present invention, in accordance with the first aspect of the present invention, A is provided in a land-based power supply facility and is built in a barge.
Control means for starting and stopping the C motor at a fixed time by a timer is provided.

[0008]

According to such a configuration, an inexpensive commercial product can be placed from land on the inside of a waterproof barge floating near the marine watercraft.
An AC motor that operates quietly by receiving AC power and a blower connected to the AC motor are installed. On the other hand, on the land, the AC motor starter and earth leakage breaker, an insulation resistance meter between the marine cable and the ground, and a starter A timer device for controlling the vessel is installed, so the AC motor in the barge at sea is started and stopped on land to keep the underwater ikesu quiet.
While eliminating the risk of marine pollution from fuel oil ,
It is possible to solve the problem of labor saving for frequent start and stop, start and stop in stormy weather, and start and stop at a fixed time every day.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall side view, FIG. 2 is an enlarged view showing a power cable in FIG. 1, and FIG. 3 is an overall side view showing a modification of FIG. FIG. 4 is an enlarged view showing the power cable in FIG.

In the above figure, the same reference numerals as those in FIG. 5 denote the same members and equipment, respectively, and the point that the present invention is significantly different from the apparatus shown in FIG. 5 is that the diesel engine mounted on the barge Instead of an AC motor, which is supplied and controlled from a land-based power supply facility via a power cable.

First, in the embodiment shown in FIGS.
The barge 1 has the same structure as the barge 01 shown in FIG. 5 except that the barge 1 has an AC motor 2 instead of the diesel engine 02. Therefore, the blower 04 is driven by the AC motor 2 fed by the power cable 19, sucks air from the filter 07 through the air suction pipe 08, and discharges compressed air through the air discharge pipe 09. The compressed air discharged from the blower 04 passes through a vinyl hose 011, and diffuses through a diffusing tube 012 at the bottom of a net cage 013.
It is expelled as bubbles from and increases the amount of dissolved oxygen in the net cage 013. During that time, the safety valve 010 has a function of releasing air to the outside when the pressure of the air discharge pipe 09 rises abnormally. That's right.

On the other hand, a land building 14 is installed on a land 13 and an AC motor starter 15, an earth leakage breaker 16, an insulation resistance meter 17, and a timer device 18 are installed therein. Land Building 1
4, the power transmission line 20 of the electric power company is drawn in, and connected to the earth leakage breaker 16 and the AC motor starter 15, and the
To the AC motor 2 of the barge 1. By operating the AC motor starter 15 on land with such a device, the start and stop of the AC motor 2 on the sea can be controlled. When a short circuit occurs in the power cable 19, the earth leakage breaker 16 operates to cut off the power supply. Further, the insulation resistance between the power cable 19 and the ground is monitored by the insulation resistance meter 17, and an action of preventing the power cable 19 from leaking is performed.
The timer device 18 can start and stop the AC motor 2 at a fixed time by controlling the AC motor starter 15 without manual intervention.

Next, the details of the power cable will be described.
In FIG. 2, the power cable 19 is connected to the land building 14 by a plug 27. A steel pipe 22 is laid along the seabed 015, and the steel pipe 22 is connected with an intermediate joint 24 while keeping watertight. In the vicinity of the barge 1, a flexible hose 23 is kept watertight by a joint 25 and is connected to the steel pipe 22. An electric power cable 19 is inserted through the steel pipe 22 and the flexible hose 23. The barge side of the flexible hose 23 is at sea level 0
13 and secured to a buoy 26 so as not to sink. Further, the land side of the steel pipe 22 is kept water-tight by a seal 28 between itself and the power cable 19, and the barge side of the flexible hose 23 is also kept water-tight by a seal 29. Although the power cable 19 is a sheathed cable, since it is contained in the steel pipe 22 and the flexible hose 23,
Since it does not come into direct contact with seawater, it is unlikely to change over time, and since it is protected by the steel pipe 22, it is not easily damaged by an anchor of a nearby small boat or the like. In addition, the barge 1 moves several meters due to tides and waves, but in this case, the flexible hose 23 freely follows, so that no excessive force acts on the power cable 19. The on-land plug 27 is male on the power cable side and female on the land building side. Even if a strong force is applied to the steel pipe, the power cable is not cut off, the plug 27 is pulled out, and the power supply stops. Just to prevent leakage.
In this manner, it is not necessary to mount a fuel tank or the like for the engine on the barge 1 as compared with a case where a driving means using a conventional engine is provided, and the barge 1 can be reduced in size. Also supply inexpensive commercial AC power from land
Receiving far operates is blower 04 by a small AC motor noisy, since the discharge air of the blower 04 at the bottom of the sea net pens 013 adjacent is supplied, cage
While efficiently supplying air to the seawater inside, the sea surface 014 above the net cage 013 is open to a quiet sky, receiving sufficient sunlight, and the sea surface is filled with the conventional engine noise. Compared with the conventional net cage that is opened or covered with solar panels, the aerating device for marine aquaculture using land-based power transmission of the present invention has a favorable environment for fish and shellfish bred in the cage. Will be given.

FIGS. 3 and 4 show a modification of the above embodiment in which a power cable is laid at an appropriate level on the sea surface by a plurality of buoys 30, and the power cable 19 is cut by mistake. Can be prevented.
That is, in FIG. 4, the power cable 19 has the flexible hose 23 laid along the upper surface of the horizontal ladder 39 connected to the land building 14 by the plug 27, and the flexible hose 23 is watertight by the intermediate joint 33. Kept and connected. The power cable 19 is inserted through the conduit of the flexible hose 23. The land on the land side of the flexible hose 23 is kept watertight between the power cable and a seal 28 on the sea surface. Therefore, seawater, rainwater, and the like do not enter the flexible hose 23. The barge side is on the sea surface and the seal 2
8 also keeps the watertight. The flexible hose 23 is fixed to the upper surface of the side ladder 39 by a plurality of bands 31, and the side ladder 39 is
5 and a band 31 and are always laid horizontally slightly above sea level.

Although the power cable is a covered cable, since it is contained in the flexible hose 23, it does not come into direct contact with seawater, so it is difficult to change over time and is protected by the side ladder 39. The structure is not easily damaged by anchors of nearby small boats. Also, the barge 1 moves several meters due to tides and waves, but in this case, since the flexible hose follows freely, no excessive force acts on the power cable. Since the power cable side of the plug 27 of the building 14 is male and the land building side is female, even if a strong force is applied to the flexible hose, the power cable is not cut off, the plug is pulled out, and power is supplied. This is a structure that does not cause a short circuit just to stop.
A part of the horizontal ladder 39 is a pin joint 40 on the land, and the horizontal ladder can freely rotate up and down and on a plane centering on the pin joint 40. No great force is applied. Between the barge and the side ladder, the fender 42 is attached to the side of the side ladder, so that even if the barge comes into contact with the side ladder, the barge is not damaged by the side ladder. In addition, a rope 43 is stretched between the barge and the side ladder so that the space between the two is too wide so that a tensile load does not act on the power cable and the flexible hose. The barge 1 also has an anchor 44 and a rope 4
It is constrained by 3 to be unable to move more than a few meters.

[0016]

In summary, according to the first aspect of the present invention, there is provided a barge having a built-in blower which floats on the sea surface, is moored, and is driven via an AC motor by power supplied from a land via a cable; The mooring is carried near the sea surface and in the sea, and is provided with aquaculture moss which introduces the air discharged from the barge blower and generates air bubbles from the air diffuser arranged at the bottom. Open to the quiet sky, no need to store fuel in marine barges, labor-saving, labor-saving, economical land-based power transmission marine aquaculture that remotely operates aeration without causing marine pollution A waste aeration device can be obtained. Since an AC motor is provided, inexpensive land-based commercial power can be used. Further, it is not necessary to mount a fuel tank or the like for the engine on the barge, and the barge can be reduced in size. Further, compared with the case where the driving means is provided with a conventional engine, the barge does not need to be equipped with a fuel tank or the like for the engine, and the barge can be reduced in size. In addition, the blower is operated by the AC motor with much less noise, which receives the supply of inexpensive commercial AC power from the land, and the discharge air of the blower is supplied to the bottom of the adjacent underwater cage. Air supply to seawater in ikesu
The while performing efficiently, the top of the sea level of the cages are opened towards the quiet sky, a state that sunlight sufficiently receive,
In comparison with the conventional net cage where the sea surface is opened to the sky full of conventional engine noise or the upper part is covered with solar cell panels, in the aeration device of the land-based power transmission type sea-culture aquaculture of the present invention, A favorable environment will be provided for fish and shellfish raised in ikesu.

According to the second aspect of the present invention, in the first aspect of the present invention, when the current supplied to the barge via the power cable disposed on the land-based power supply facility is short-circuited, or the ground insulation resistance of the cable is reduced. Claim 1 is provided with an earth leakage breaker that cuts off power supply when the voltage falls below an allowable value.
In addition to the effects of the invention of (1), the present invention is extremely useful industrially because it provides a safe land-based power transmission type aquaculture wastewater aeration apparatus that prevents the occurrence of earth leakage accidents.

According to a third aspect of the present invention, in the first aspect of the present invention, there is provided a control means which is provided in a land-based power supply facility and which starts and stops an AC motor built in a barge at a fixed time by a timer. Thus, in addition to the effect of the invention of claim 1, a land-based power transmission type sea-cultured aerator using a land-based power transmission type aeronautical system capable of starting and stopping the aeration of a stake by remote control from the shore in a labor-saving manner can be obtained. It is extremely useful.

[Brief description of the drawings]

FIG. 1 is an overall side view showing one embodiment of the present invention.

FIG. 2 is an enlarged view showing a power cable in FIG.

FIG. 3 is an overall side view showing a modification of FIG.

FIG. 4 is an enlarged view showing a power cable in FIG. 3;

5 is an overall side view showing the aeration apparatus of the conventional cages for sea surface cultivation.

[Explanation of symbols]

 01 Barge 03 V Belt 04 Blower 07 Filter 08 Suction Pipe 09 Discharge Pipe 010 Safety Valve 011 Vinyl Hose 012 Diffusion Tube 013 Net Ikesu 014 Sea Level 015 Submarine 1 Barge 2 AC Motor 13 Land 14 Land Building 15 AC Motor Activator 16 Leak Insulation resistance meter 18 Timer 19 Power cable 20 Transmission line 22 Steel pipe 23 Flexible hose 24,25 Joint 26 Buoy 27 Plug 28,29 Seal 30 Buoy 31 Band 33 Joint 34 Band 35 Float 39 Side ladder 40 Pin joint 42 Fender 44 Rope 45 anchor

Claims (3)

(57) [Claims] 1. A barge having a built-in blower which floats on the sea surface and is moored and is driven via an AC motor by electric power supplied from the land via a cable; and a mooring device which is moored on the sea surface near the barge and in the sea, It is equipped with a culture moss that introduces the air discharged from the barge blower to generate air bubbles from the air diffuser arranged at the bottom, and that the upper sea surface of the ikesu is open to a quiet sky. Characterized by a land-based power transmission type aquaculture moss aeration device. 2. The onshore power transmission type marine aquaculture according to claim 1 .
Leakage that cuts off power supply when the current supplied to the barge via the power cable installed in the land-based power supply facility is short-circuited, or when the insulation resistance to the ground of the cable drops below the allowable value in the ikesose aeration system An aeration device for marine aquaculture using land-based power transmission, comprising a circuit breaker. 3. The onshore power transmission type marine aquaculture according to claim 1 .
In aeration apparatus cages, pens for land transmission type sea aquaculture, characterized in that the land AC motor incorporated in arranged to bar di to the feed facility equipped with control means for starting and stopping the constant time by the timer Aeration equipment.