JPS5823045B2 - scuttling floating fish reef - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a floating fish reef, and more specifically to a scuttling type floating fish reef that is floated in the sea and is capable of sinking to the seabed with its own blades when it starts to surface due to cutting of mooring lines, etc. Regarding fish reefs.

Artificial fish reefs are used as fishing equipment to collect fish by changing topography on the seabed or in the sea, or as emergency improvement creation facilities for breeding and aquaculture. Floating reefs are floating fish reefs.

The reef is shown in FIG. It is composed of a floating section 6, a mooring rope 7, an anchor 8, and a connecting section 9.

After the floating fish reef is set afloat, the mooring line 7 is prevented from loosening even by the fluid force caused by currents and waves. The structure is designed to attract fish to the fish reef body 5, but as time passes after floating, the mooring line 7 or the connecting part 9
The mooring line 7 may break due to twisting, weakening due to wear, deterioration of the material due to repeated loads, and unexpected accidents.
If the connecting part 9 is damaged and the mooring function is lost, the floating fish reef will float away from its floating position and drift, causing damage to fishing boats and other vessels, adjacent fish reefs, and fishing equipment such as fixed nets and fishing nets in operation. It is expected that major damage will occur, including damage to other offshore and underwater facilities.

In order to solve the above-mentioned problems with floating fish reefs, the present invention aims to:
A floating fish reef has been developed that has a scuttling function that allows it to sink to the sea floor using its own blades while minimizing the extent of its rise. A gas body having a pressure corresponding to the water pressure in the floating sea is sealed in the float body, and the internal open end is positioned inside the float body, and the external open end is positioned outside the float body, and as the float body rises, This is a scuttling type floating fish reef in which the float body is provided with a siphon that connects the inside of the float body with the sea due to a decrease in seawater pressure.

In other words, in the present invention, when normally floating, the gas pressure inside the float body and the seawater pressure outside maintain a constant balance, and the inside of the float body remains closed to the outside, but when the float body floats, the pressure rises to a certain height. If the pressure rises to a certain level, the pressure balance relationship will be disrupted, and
The seawater inside the siphon is pushed out into the seawater outside by the gas pressure, emptying the siphon, and the gas also turns into bubbles and flows out from the siphon, and new seawater flows into the float body through the opening, causing scuttling. It is done.

The siphon-type floating fish reef can be implemented in various types, such as a sedimentation compression type, a sedimentation air supply type, and a filling type, depending on the mode of floating in the sea. The float body is sufficiently large, and when the float body settles, the siphon is filled with seawater to temporarily close the external open end of the siphon, and the float body is left empty with atmospheric pressure air, and the float body is allowed to settle. After the seawater that flows into the float body from the opening as the water pressure changes reaches a certain level above the lower end of the siphon, the outer opening end is opened and the floating body is sunk into the sea at a predetermined depth. be.

In addition, for the sinking air supply type, a valve-sealed short pipe in the open state is installed near the reference water level line in the float body, that is, near the water surface in the float body when floating is completed, and the siphon and the float body are left empty and float as they are. By allowing the sediment to settle into the sea,
Most of the air inside the float is discharged to the outside from the siphon, and then an air supply hose is inserted into the opening to supply gas at a pressure slightly higher than seawater pressure to prevent air bubbles from sealing the valve. After confirming that the water level inside the float has dropped to a predetermined position by ejecting water from the pipe, close the valve seal short pipe and remove the air supply hose to complete the floating installation.

Furthermore, in the case of a filling type, before submerging the float into the sea, water is poured into the float up to the water level inside the float when the floating is completed, and the external opening of the siphon is also filled with sufficient seawater into the siphon. The ends and openings are temporarily closed, and the gas is pumped through a valve-sealed short pipe installed near the reference water level line of the float to set the pressure inside the float to correspond to the intended underwater setting.

Next, the valve-sealing short pipe is closed, and the float body is directly lowered into the sea, and at a predetermined water depth, the external open end of the siphon and the opening at the bottom of the float body are opened to complete the floating installation.

In this way, there are various floating modes for the siphon type, but the important point is that the water level in the hollow float body with the opening should be set to a certain level above the lower end of the siphon when the floating is completed. This ensures that the gas pressure inside the float is balanced with the seawater pressure at the set water level.
The gas body is located in the sea in a state where it is sealed by the seawater inside the siphon and has a certain buoyancy force that allows it to flow out of the float body.

If the float body floats due to an accident, etc., the pressure balance relationship described above will collapse as the seawater pressure decreases, and the seawater inside the float body and the siphon will be pushed out by the gas pressure, causing the water level inside the float body to drop. When the siphon descends from the lower end of the siphon, the inside of the siphon becomes empty, and the gas flows out through the siphon, losing buoyancy and settling.

The details of the present invention will be explained below based on the embodiments shown in the drawings. Figure 2 shows the basic structure of the siphon type float, Figure 3 shows the sinking type float, and Figure 5 shows the filling type. Examples are shown, in which a substantially U-shaped tubular siphon 11 is attached to an appropriately needle-shaped hollow float body F having an opening 10 that communicates with the outside, and an internal opening end 12 of the siphon 11 is connected to an external opening inside the float body F. The end 13 is located outside the float body F.

In other words, in the case of the sedimentation compression type, as shown in FIG. 11 is incorporated.

The reference water level line A-A indicates the water surface inside the float when the float F is submerged to the set floating position.
The upper part of the float F is called the floating chamber 14, the part of the float F below the reference water level line A-A and above the lower end of the siphon 11 is called the adjustment chamber 15, and the lower part of the float F is called the preliminary chamber 16. It is divided and called.

[Even in the case of the settling air supply type and the filling type, this can be implemented by installing a short valve sealing pipe 17 as shown by the imaginary line near the reference water level line A-A of the float F in Fig. 2 above, but Figures 3 and 5 show examples that can be easily floated without requiring any work.

Fig. 3 shows a float body F of the sinking air supply type, and one or more siphons 11 are attached to the float body F, which has a shape substantially similar to the float body F of the sinking compression type described above, and a part of it is shaped like a cylinder. It is placed exposed on the outside of the part.

Further, as shown in FIG. 4, an annular hollow tube 19 with a horizontally protruding backing plate 18 installed on the side is introduced into the opening 10 of the float body FT section, and an appropriate number of hanging earth tubes provided at the end of the backing plate 18 are introduced. Ring 20
. An L-shaped arm 23 of a certain height is vertically installed at the lower part, and an auxiliary rope 25 suspended from the sea is inserted through an auxiliary ring 24 for pulling out provided at the end of the arm 23, and the auxiliary rope 25 is attached to the ring 22 for pulling out. The ends are connected, and an air supply hose 46 having a substantially U-shaped tip is engaged with the hollow ring 19.

Furthermore, a check valve 26 is provided near the lower part of the floating chamber 14 of the float F to allow water or air to pass only from the inside to the outside.

The check valve 26 elastically biases the valve body 28 with an internal spring 27, and normally the check valve 26 remains closed and closes the flow path 29 provided in the float body F. The check valve 26 is set in an open state by a rod 30 that pushes up the check valve 28 from below.

That is, the rod 30 is placed vertically on the backing plate 18, is laterally supported by an appropriate number of guides 3L31 provided on the cylindrical portion of the float F, and pushes up the valve body 28 at its upper end.

In addition, the filling type shown in Fig. 5 has an appropriate number of siphons 11 attached to the float F, which is made by integrally connecting a cylinder with a small outer diameter at the bottom of a long cylinder. In addition to providing a part thereof with or without being exposed outside the cylinder body, a short valve sealing pipe 17 is provided near the bottom of the floating chamber 14 of the float body F, and an air supply pipe 32 provided with an on-off valve 38 is installed inside the float body F. The tip is set to be lower than the floating chamber 14 section.

The filling type float F shown in FIG. In Fig. 5, a hollow communication pipe 36 is installed vertically inside the float body F and penetrates through the float body F upper plate 35.
An opening 10 at the bottom communicates with the outside.

Further, on the upper surface of the float body F, a cylindrical or other shaped batch 38 having an elliptical or other opening 37 is erected, and as shown in FIG. In this way, the external open end 13 and the end of the communication pipe 36 are accommodated within the batch 38.

The purpose of providing the batch 38 as described above is to prevent organisms from adhering to the external opening end 13 of the siphon 11 or the end of the communication pipe 36 during the long-term floating of the float F, which may prevent the siphon function. The specific implementation method will be explained in detail in the explanation of floating installation below.

The opening 37 of the batch 38 and the opening 1 at the bottom of the float F
0 is for temporary sealing with a suitable cover plate, and a general sealing cover plate may be used, but in the embodiment, the cover plate 39 is automatically installed after the floating body is floated; List the items that can be collected.

That is, as shown in FIGS. 6 to 8, the opening 37 of the batch 38 is elliptical, and the packing 40 is inserted from inside the opening 37 using a similar elliptical cover plate 39 that is wider in area than the opening 37. The cover plate 39 is closed by screwing the tip of a bolt 42 inserted from above into the center hole of the curved lever 41 that straddles the recording port 37 into the screw hole 43 provided in the center of the cover plate 39. Plan the installation.

Further, a mounting portion 45 to which a hanging rope 44 is attached is provided at one end of the upper surface of the cover plate 39 in the major axis, so that the cover plate 39 can be recovered at sea.

The structure of the present invention is as described above. In the sedimentation compression type, as shown in FIG. 2, the siphon 11 is filled with seawater to temporarily close the external opening end 13 and the float body
The interior of the vessel is left empty with atmospheric pressure air, and the anchor 8 is lowered into the sea in the attitude shown and lowered to the planned floating position.

Seawater flows in from the opening 10 as it settles, but when the water level in the float F is located above the lower end of the siphon 11, the lid provided on the external opening end 13 of the siphon 11 is removed, and the float F is moved to a specified position. Let it sink into position.

The seawater pressure increases as it sinks, and the pressure applied to the external opening end 13 of the siphon 11 increases, but on the other hand, the internal opening end 1
2, the water level inside the float body F has risen and the pressure inside the float body F has increased to a state equal to the seawater pressure at the reference water level line A-A, so the pressure relationship of the siphon 11 is balanced. The gas inside the float body F is sealed by the siphon 11, and the float body F is positioned in the sea with sufficient buoyancy.

In the case of the sedimentation compression type, the floating work is extremely simple because the float body F can simply be sunk as described above.
5 and the preliminary chamber 16 must be sufficiently large.

In the case of the sinking air supply type, after the float F is allowed to sink to a predetermined position, a gas body with a pressure higher than the water pressure in the floating sea is sent into the float F using an air hose from the sea. There are two types of implementations: those that require diving work during floating installation and those that do not.

In the former case, a valve-sealing short pipe 17 in an open state is provided on the float body F as shown in FIG. If the seawater is allowed to settle to a point where the seawater flows in through the opening 10, most of the air in the float body F is discharged through the siphon 11, and the float body F becomes almost full of water.

Next, if a separate air supply hose is inserted into the opening 10 and a gas having a pressure higher than the water pressure in the floating seawater is sent into the float F, the seawater inside the float F will be discharged from the opening 10 and the siphon 11. When the gas is discharged from the valve-sealing short pipe 17 in the form of bubbles, the air supply is stopped, and the valve-sealing short pipe 17 is closed by diving to complete the floating installation.

In the latter case, which is a floating installation using a sinking air supply method that does not require diving, a float F as shown in FIG. The air supply hose 46 is engaged with the hollow pipe 19, and the suspension rope 25 connected to the pull-out ring 22 of the hollow pipe 19 is left hanging loosely from the sea without being pulled. The interior and the inside of the siphon 11 are left empty and are allowed to settle to a predetermined position.

As the float body F sinks, the air inside the float body F is discharged from the check valve 26 and the siphon 11, and the inside of the float body F is filled with seawater, and at the floating position, gas with a pressure higher than the water pressure in the sea is released from the air supply hose 46. Vent your body.

When the floating chamber 14 of the float body F is filled with gas, some of it is discharged as bubbles from the check valve 26, so when these bubbles are detected from the sea, the air supply is stopped and the gas is pulled from the sea. If the hanging ropes 21.degree. 21 are loosened and the other auxiliary rope 25 is strongly pulled, the hollow tube 19 is removed from the opening 10 together with the air supply hose 46.

When the hollow pipe 19 comes off, the iron 30 that keeps the check valve 26 open loses support and falls, and the force of the spring 27 of the check valve 26 causes the valve body 28 to close.

Next, let go of the hand that is pulling the auxiliary rope 25, and remove the sling 21.
If it is pulled up, the hollow tube 19 and the air supply hose 46 and the auxiliary rope 25 will pass through the auxiliary ring 24 and be recovered at sea.

Furthermore, even if it is a filling type, it can be carried out in a type that requires diving work or a type that does not require diving work, similar to the above-mentioned settling air supply type. F
A valve-sealing short pipe 17 is installed in the opening 1 before submerging it into the sea.
0 with a suitable cover plate and inject water into the valve-sealing short pipe 17 or siphon 11 so that the water level inside the float body F is near the reference water level line, and also fill the siphon 11 with seawater to drain the outside of it. After temporarily closing the open end 13, a gas body with a pressure corresponding to the seawater pressure near the reference water level line A-A at the time of floating is sent into the float body F from the valve sealing short pipe 17 to close the valve. Close the sealing tube 17.

If the float body F is set as described above and is allowed to sink to the floating position, and the external open end 13 and opening 10 of the siphon 11 are opened by diving, the inside of the float body F is set to an appropriate pressure in advance. Since this is set, seawater does not enter or exit through the opening 10, and the internal and external pressures of the siphon 11 are balanced, allowing the siphon 11 to remain floating.

On the other hand, in the latter case, which does not require diving work, Figure 5a,
In b, the short valve sealing pipe 17 is opened and water is injected from the opening 37 of the hatch 38, and after confirming that water overflows from the short valve sealing pipe 17, the short valve sealing pipe 17 is closed.

In this case, in the embodiment shown in FIG. 5a, the opening 10 is sealed with an oval cover plate 39 shown in FIG. 7 before water is poured.

After closing the valve-sealing short pipe 17, if water is further injected into the pipe 38, the siphon 11, the connecting pipe 36, and the pipe 38 are all filled with water, and moreover, there is no air in the floating chamber 14 of the float body F. It will be in a state where it is filled and remains.

Therefore, the opening 37 of the hatch 38 is sealed from the inside with an oval cover plate 39 as shown in FIG.
By supplying a gas having a pressure corresponding to the water pressure in the floating sea, the pressure inside the float body F and inside the hatch 38 are set to be equal through the siphon 11 and the communication pipe 36.

Next, remove the hose connected to the air pipe 32, and remove the bolts 42 that attach the cover plate 39 together with the bar 41. Since internal pressure is applied to the float F, the cover plates of the openings 10 and 37 are removed. 39 does not come off, and the float body F is allowed to sink to a predetermined depth in this state.

When the floating position is reached, the internal pressure and external pressure of the float F and the batch 38 become equal, and the cover plate 39 is automatically removed from the opening 10° 37 by its own weight, and the suspension rope 44 attached to the cover plate 39 is removed.
If it is lifted from the sea, the cover plate 39 and the opening 10°37
Since it has an elliptical shape, the cover plate 39 can easily pass through the opening 10° 37 and be recovered.

Naturally, the floating body F floating as described above is subject to biofouling over a long period of time, and in particular, if the biofouling progresses to the external open end 13 of the siphon 11 and the opening 10 of the float F, it becomes blocked and scuttled. There is a risk that it will not be able to perform its functions to its full potential.

In order to prevent this, the first method is to inject a liquid that is mutually insoluble with seawater and has a specific gravity greater than that of seawater into batches until it overflows from the valve-sealing short pipe 17, instead of injecting seawater before sinking the float F. 38, close the valve-sealing short pipe 17, and continue injecting the same liquid until it reaches the water level line B-B, which is above the external opening end 13 of the siphon 11 in batch 38, and then add seawater to the batch. There is a way to gently fill up to the opening 37 of 38.

The second method is to use a concentrated saline solution with a high specific gravity, for example, one with a specific gravity of about 1.15 at a concentration of 20%, and inject this into the float body F and up to the water level line B-B of the batch 38 in the same manner as above. However, in order to prevent mixing, dispersion, and invasion of living organisms due to contact with seawater, an intermediate liquid that is mutually insoluble in both seawater and concentrated saline and has a specific gravity higher than that of seawater and lower than that of concentrated saline is placed at water level C. -C, and then fill the upper surface of the opening 37 with seawater.

Methods 1 and 2 both involve wrapping the external opening end 13 etc. with a liquid in which living things do not inhabit.In particular, in the second method of using concentrated saline, the floating body F scuttles and falls to the seabed. Even if salt water flows into the sea, it will not contaminate the seawater (it is extremely effective).

The float F floating in the sea as described above is a sinking compression type.
Regardless of whether it is a sinking air supply type or a filling type, the gas pressure inside the float F in the floating state is equal to the reference water level line A-A in the floating sea.
The gas body of the float body F is sealed inside the siphon 11 in a state where it is filled with sealed water.

During long-term floating, the mooring cable 7 may be cut, etc., and the float body F may be damaged.
When the float floats to the surface, the water level inside the float body F is lowered by the internal gas pressure due to the decrease in water pressure in the sea, and the seawater flows out of the float body F through the opening 10 and the connecting pipe 36, and the float body When the water level in the siphon F becomes lower than the lower end of the siphon 11, all of the seawater in the siphon 11 is pushed out of the siphon 11 by gas pressure and becomes empty, and the gas in the float body F passes through the siphon 11. The floating body F loses its buoyancy and scuttles to the seabed.

- As described above, the present invention is designed to minimize the degree of rise of a floating fish reef when it begins to surface, and to allow it to sink to the seabed by itself. Since it uses the siphon 11 to sink, there is no need for any other mechanically operated devices or means, so there is no need to worry about breakdowns or malfunctions, and if the float F rises, it will be fixed. It can be scuttled to the seabed, and the external opening end 13 of the siphon 11, the opening 10 of the float F, etc. are provided with batches 38 and filled with a liquid in which living things cannot live, thereby preventing biofouling. The external opening end 13 and the like are always kept unobstructed so that the scuttling function can be reliably exerted when necessary.

In addition, in the case of the settling air supply type or the filling type, the air supply means and cover plate device unique to the present invention do not require any diving work in the sea, and only need to be operated from the sea, making it efficient and easy to operate. Floating fish reefs can be installed.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a floating state of a floating fish reef, Fig. 2 is a basic structural diagram of a float body part of a floating fish reef according to the present invention, Fig. 3 is a cross-sectional view of a float body of a sinking air supply type, and Fig. 4 is a diagram illustrating a floating state of a floating fish reef. 3 is an enlarged explanatory view of the air supply means, FIGS. 5a and 5b are sectional views of the filling type float, FIG. 6 is a plan view of the batch in FIG. 5, and FIG. 7 is an X-- 8 is a sectional view taken along the Y-X line in FIG. 6. F: Float body, A-A: Reference water level line, 1: Marking section, 2: Reef section, 3: Buoy, 4: Connecting rope, 5: Reef body, 6: Floating section, 7: Mooring line, 8: Anchor , 9: Connecting section, 10: Opening section, 11: Siphon, 12: Internal opening end, 13: External opening end, 14: Floating chamber, 15: Adjustment chamber, 16: Preliminary chamber, 1
7: Valve sealing short pipe, 18: Backing plate, 19: Hollow tube, 20: Excavation ring, 21: Suspension rope, 22: Extraction ring, 23: Arm,
24: Auxiliary ring for withdrawal, 25: Auxiliary rope, 26: Check valve, 2
7: Spring, 28: Valve body, 29: Channel, 30: Rod, 31 guide, 32: Air pipe, 33: Open/close valve, 34
: Horizontal tube, 35: Top plate, 36: Connecting pipe, 37 Two-open ['' part, 38: Hatch, 39: Lid plate, 40: Packing, 41 Nilever, 42: Pol I, 43: Thread hole, 44 : Hanging line,
45: Mounting part, 46: Air supply hose.

Claims (1)

[Claims] 1 A float body F is formed by consecutively connecting cylinders each having an opening 10 at the tip in the lower part of a hollow spherical floating chamber 14. One end is located inside the float body and the other end is located outside the float body, so that the float body F floats. One or more siphons 11 are installed to establish communication between the inside of the float body F and the sea due to the decrease in seawater pressure accompanying the decrease in seawater pressure. An annular hollow pipe 19 with an air supply hose 46 attached to the side and an air supply hose 46 attached to the end
loosely inserted, and the hanging rope 21 is attached to the end of the backing plate 18.
An appropriate number of hoisting rings 20 connected to the An auxiliary cable 25 suspended from the sea is inserted into a protruding auxiliary ring 24 for pulling out and provided at the end of the arm, and the end of the auxiliary cable 25 is connected to the ring 22 for pulling out. A check valve 26 is provided inside near the lower part of the floating chamber 14 of the float body F so that the tip of the iron 30 protruding downward is supported on the backing plate 18 so that the float body F can pass only in the direction from the inside to the outside. The scuttling type floating fish reef is provided with a flow path 29 associated with a spring 27 that elastically biases the check valve 26 in the rond direction.