JPS62203894A - Sea water take-in equipment - Google Patents

Abstract

PURPOSE:To enable sea water to be taken economically by constituting a seawater take-in equipment which can be installed inside the sea water, removed and moved easily. CONSTITUTION:A pipe line 1 consists of a plurality of pipes 2a-2n each having the desired length and the desired diameter and being closed at the opposed ends. These pipes 2a-2n are connected to each other with journal joint 3 bendably in a line. The pipe line 1 has a pluraly of floats 5 attached to each of the pipes 2a-2n so that the pipe line 1 itself can sink and float into and on the sea. One end of the pipe line 1 is connected via a journal joint 7 to a barge 6 on which a water treating system used in the deep sea is mounted while the other end of said line 1 is connected via another journal joint 8 to a pipe anchor 9 which can be filled with sea water and air. The anchor 9 has a water inlet port 10.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a seawater intake device for taking deep water, etc., which is eutrophic, clean, and has a low water temperature, and in particular, it is easy to install and remove underwater. This relates to a seawater intake device.

[Conventional technology]

The deep water that exists in the deep part of the ocean is rich in organic nutrients, clean, and has low water temperatures (for example, at a depth of 30 mm).
It has the characteristic that the temperature in the Sea of Japan at 0 m is approximately 2°C), and for this reason, it is increasingly being used to take advantage of these characteristics in various fields such as fisheries 1 power generation and industry. Further, such deep water exists offshore at a relatively long distance from the coast and at a certain depth or more.

Conventionally, as a water intake device for taking in deep water as described above, the one shown in Japanese Patent Publication No. 60-50632 and the like is known.

This type of water intake device has a long water intake duct vertically installed on the seabed or lake bottom that protrudes above the water surface from the bottom. A plurality of water intake ports that can be opened and closed are provided in multiple stages, and by pumping up water from the upper layer of the water intake duct, water at an appropriate temperature at a suitable depth is taken from the water intake ports that open and close.

[Problem that the invention seeks to solve]

In the conventional deep water intake device as described above, the water intake duct that makes up the device does not have a self-floating function. In the case of installing a large construction machine such as a large floating crane, a large construction machine such as a large floating crane is required, which causes problems in that the installation work becomes complicated and the installation cost increases.

In addition, since the conventional water intake device described above has a tower structure and is a fixed type, the foundation for installing the water intake duct on the seabed must be solid in order to have a structure that can withstand stress from tidal currents and ocean currents. In addition, a support mechanism such as a wire rope is required, which makes the structure large-scale and increases costs, and it is almost impossible to remove or move the water intake device once it has been installed.

[Purpose of the invention]

The present invention was made to solve the above-mentioned conventional problems, and it not only simplifies installation in the sea, but also
The purpose of the present invention is to provide an economical seawater intake device that can be removed and moved, and has low installation costs and low water intake costs.

[Means for solving problems]

A seawater intake device according to the present invention includes a plurality of pipes having a desired diameter and a desired length that communicate with each other, a flexible joint that connects the pipes in a line and in a bendable manner to form a pipeline, and each of the above-mentioned pipes. It consists of a floating body that is installed on the pipe body and that adjusts the weight of the pipe in water so that it can sink and float on its own, and a pipe anchor that is installed at one end of the pipeline that has the water intake.

[Action of the invention]

In the present invention, the water intake pipeline connects a plurality of pipe bodies that communicate with each other so as to be bendable by a universal joint,
In addition, each pipe body is equipped with a floating body that can adjust the underwater weight to zero, plus or minus, so it can be assembled and towed to the desired sea area.

Installation becomes easier, and the floating body allows the pipeline to sink into the sea and rise to the sea surface on its own.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a basic configuration diagram when the seawater intake device according to the present invention is applied to an offshore fishery aquaculture plant, and FIG. 2 shows details of the water intake mechanism.

In FIGS. 1 and 2, l is a pipeline for taking in deep water, and is composed of a plurality of pipes 2a to 2n with both ends closed and having a desired length (for example, 20 m) and a desired diameter (for example, 700 mm). Each of the pipes 2a to 2n is linearly and bendably connected by a universal joint 3, and the bending connection portions of each pipe 2a to 2n are connected by a flexible pipe 4, so that the pipes communicate with each other. It has become. In addition, each of the above pipes 2a
~2n is equipped with a plurality of floating bodies 5 for sinking itself into the sea and raising it to the sea surface.

One end of the water intake pipeline 1 (pipe 2
side a) is connected via a universal joint 7 to an offshore floating structure 6 such as a purge or ship equipped with a seawater treatment system for deep water, etc., and the other end (pipe 2n side) is connected via a universal joint 8 to A pipe anchor 9 that can be filled with seawater and air is connected, and a water intake port 10 is further provided.

The pipe anchor 9 is used to prevent the water intake pipeline 1 from being washed away by wind, waves, currents, etc., and is attached to the ground surface with the seabed 11 to ensure more secure mooring at the installation location. A needle-shaped or claw-shaped anti-slip spike (not shown) is formed on the holder. Further, the pipeline 1 including the pipe anchor 9 is also used for mooring the offshore floating structure 6.

In order to sink and self-float the pipe line 1, the floating bodies 5 and pipe anchors 9 installed on the respective pipes 2a, 2b, . A hose 12 for supplying high pressure air from (not shown) connects electromagnetic switching valves 13 and 9.
A (see FIG. 3), and a signal cable 14 for supplying a switching control signal is connected to these electromagnetic switching valves 13.9a. The electromagnetic switching valve 13.9a supplies high pressure air into each floating body 5.

It controls the introduction of seawater and the discharge of seawater by injecting high-pressure air, and a corresponding control command signal is given through a signal cable 14 from a control panel (not shown) installed on the offshore floating structure 6. These controls can be performed separately for each floating body 5.

The above-mentioned seawater treatment system for deep water, etc. is a system that mixes deep water rich in organic components taken through a pipeline 1 with surface water and sprays the mixture onto the sea surface.As shown in FIG. A water sampling pipe 17 for sucking surface water of the sea is connected to the suction side of this water sampling pump 16, and this surface water sampling pipe 17 has a water sampling pump 16 driven by: Multiple water intakes for surface water intake 18.18. . . are connected via separate flow control valves 19, 19, . Further, on the suction side of the water sampling pump 16, a deep water sampling pipe 20 is provided.
is connected to this deep water sampling pipe 20, one end of a pair of camping hoses 21, 21 is connected to a flow rate control valve 22.
22, and the other ends of the coupling hoses 21, 21 are connected to the pipe 2 of the pipeline 1.
The water supply pipe 24 connected to the water sampling port 23.23 connected to the water sampling port 23.23 connected to the water sampling pump 16 and the discharge side of the water sampling pump 16 is provided with separate block valves 25.25. A plurality of water spray nozzles 26, 26 . ...is connected. Further, 27 is a priming pump driven by a motor 28, the suction side of which is connected to a surface water intake 30 via a block valve 29, and the priming pump 27 is connected to a surface water intake port 30 via a block valve 29.
The discharge side of 7 is connected to the deep water sampling pipe 20 via a block valve 31 and a priming pipe 32.

Note that 33 is a mooring buoy for mooring the offshore floating structure 6.

Next, the operation of this embodiment configured as described above will be explained.

First, a case will be described in which the water intake pipeline 1 is installed in a desired sea area.

The pipe 2n connected with the pipe anchor 9 assembled at the factory and the other pipes 2a, 'lb, .

At this time, even if each pipe 2a to 2n is filled with seawater,
Since air is sealed in the floating body 5, the entire pipeline 1 floats on the sea surface.

Next, after sequentially connecting the pipes 2a to 2n floating on the sea surface near the quay with the universal joints 3, the flexible pipes 4 connect the bending connections, and the high-pressure air supply hoses to each floating body 5 are roughly connected. 12 and close reading of the signal cable 14 to each electromagnetic switching valve 13 is performed.

After that, the assembled water intake pipeline 1 and offshore floating structure 6 are towed to the sea area of use, and the floating structure 6 is towed separately from this and connected to the mooring buoy 33 installed in the sea area of use, The pipe 2a of the water intake pipeline 1 is connected to the mooring buoy 33, and the water intake port 23.23 provided on the side of the pipe 2a is connected to the coupling hoses 21, 21.
Further, a high pressure air supply hose 12 and a signal cable 14 are connected to the near compressor and control panel. Then, by sending a signal through the signal cable 14 to the electromagnetic switching valve 13 of each floating body 5 of the other pipes 2b to 2n excluding the sea surface side pipe 2a, the electromagnetic switching valve 13 is opened, and the inside of each floating body 5 is immersed in seawater. Open. As a result, seawater flows into the floating body 5 and the internal air is discharged, and by adjusting the amount of seawater filled in the floating body 5, the underwater weight of the pipeline 1 as a whole becomes zero. After that, the pipe anchor 9 is towed to the target position.

Next, open the electromagnetic switching valve 9a of the pipe anchor 9 to further inject seawater, and at the same time, a little later, further seawater is injected into the pipe 2n directly connected to the pipe anchor 9 and the floating body 5 of the pipe connected thereto. do. By doing this, the underwater weight of the nine pipe anchors of pipeline 1 is made positive and the pipe anchor is 94! T! I will sink to the sea floor 11. When the pipe anchor 9 reaches the seabed 11, the weight of the pipe anchor 9 and the weight of the pipe 2n and the several pipes connected to it act on the pipe anchor 9 to securely fix the pipe anchor 9 to the seabed 11. do. At this time, the air inside the floating body 5 is adjusted so that the weight in the water other than the pipe 2n on the seabed side and several pipes connected thereto becomes zero or negative. This adjustment is made by controlling the electromagnetic switching valve 13 through the signal cable 14. As a result, buoyancy is generated at the sea-side end of the pipeline 1, so that the suspension load of the pipeline 1 is not applied to the floating structure 6 and the mooring buoy 33.

Next, we will discuss the seawater intake operation.

In this case, first open block pulp 29.31,
The priming pump 27 is driven to suck up surface seawater from the water intake port 30, the priming pipe 32, the deep water sampling pipe 20. Coupling hoses 21, 21, water sampling ports 23, 23, and the upper part of pipe 2a in pipeline 1 (pipe 2a
As shown in FIG. 3, a check pulp 34 is provided on the side connected to the floating structure 6 inside, and a water sampling pump 16 including a surface water sampling pipe 17 (a part above the check pulp 34) and a surface water sampling pipe 17 are provided. Fill the piping up to the suction port with seawater. Thereafter, the surface water flow rate control valves 19, 19, . . . and the block pallets 7', 25, 25, .・
..., start the water sampling pump 16, and draw the surface water inlet 18.18. ...Water pumping and water pipe 24
Surface water pumped through is sprayed onto the sea surface from each nozzle 26.26.

Next, when the deep water flow rate control valve 22.22 is opened, deep seawater from the seabed flows into the pipeline 1 from the water intake port IO, and further from the pipeline 1 to the water intake port 23.23, the coupling hoses 21, 21, and the water intake port. The water is sucked into the water sampling pump 16 through the water pipe 20 and mixed with surface water to the nozzle 26.
26 to the sea surface.

At this time, pay attention to the indicated values of the deep water flow meter 35 and the surface water flow meter 36 so that the water sampling pump 16 does not become overloaded.
and supply seawater at the desired mixing ratio.

By mixing a large amount of low-temperature deep water with surface water, the temperature of the sprayed seawater becomes the same as that of surface water, making it suitable for fish farming, etc., and deep water rich in organic components is sprayed. By doing this, you can farm fish or attract fish.

In addition, the pipeline 1 with the pipe anchor 9 fixed to the seabed 11 is connected to a mooring buoy 3 mooring the offshore floating structure 6.
Functions as an anchor line for 3. By making the underwater weight of the intermediate pipe and the upper pipe of the pipeline 1 zero or negative, no load is applied to the upper end of the pipeline 1, so the mooring buoy 33 can be made smaller and the offshore floating structure 6 The mooring buoy 33 can be omitted depending on the type of the mooring buoy.

Next, the removal or transfer of the water intake pipeline 1 will be described.

In this case, first, by supplying a signal to the electromagnetic switching valve 13 of the uppermost pipe 2a through the signal cable 14, communication is established between the high-pressure air supply hose 12 and the floating body 5 of the pipe 2a, and the inside of the floating body 5 is made to flow into seawater. The seawater inside the floating body 5 is pushed out of the floating body 5 by opening it and sending high-pressure air into the floating body 5 from the near compressor through the bowse 12. Once the seawater has been discharged, the electromagnetic switching valve 13 is closed to shut off the high pressure air supply hose 12 and the outside.

Thereafter, in the same manner, high pressure air is supplied to the floating body 5 of the pipes 2b to 2n.
and into the pipe anchor 9 in order to drain the internal seawater, and give buoyancy so that the pipe 2a, which is closer to the floating structure 6, floats to the sea surface in sequence. After the entire pipeline 1 floats above the sea surface, the coupling hoses 21, 21 and the water intake port 23 of the pipeline 1 are disconnected, and the connection between the pipeline 1 and the floating structure 6 is also released. At the same time, the high-pressure air supply hose 12 and signal cable 14 are also separated from the floating structure 6.

Thereafter, the pipeline 1 and the floating structure 6, which have been separated from each other, are towed to a predetermined location by a tugboat. This makes it possible to remove the water intake pipeline 1 or move it to another sea area.

When the floating structure 6 is brought into emergency 'a''# due to the occurrence of a typhoon, etc., the coupling hose 21, high pressure air supply hose 12 and signal cable 14 of the pipeline 1 installed as shown in Fig. 1 are connected to the floating structure. separated from the body 6,
Further, the connection between the pipeline 1 and the floating structure 6 by the universal joint 7 is separated. Then, the floating structure 6 is towed and evacuated to a safe place. At this time, the pipeline 1 is left as it is in the installation sea area, but the pipeline 1 is held in the sea by the floating body 5 in a state where the buoyancy balance is maintained like the mooring buoy 33.

In addition, in this case, even if force from wind, waves, or tidal currents acts on the pipeline 1, the pipeline 1 has a structure in which multiple pipes are connected in a bendable manner with flexible joints, so it will adapt to the tidal currents, etc. and will not be damaged or washed away.

In addition, in the above embodiment, a case was described in which the seawater intake device according to the present invention was applied to an offshore fishing plant.
Of course, the invention is not limited to this, and can also be applied to power generation, industrial plants, recovery of underwater precious metal components such as uranium, etc.

〔Effect of the invention〕

As described above, according to the present invention, a plurality of pipe bodies that communicate with each other are bendably connected by a universal joint, and each pipe body has an underwater weight that can be adjusted to zero, plus or minus, and sinks into the pipe body. It is equipped with a floating body that provides a self-floating function, and the entire structure is in the form of a pipeline with pipe anchors connected, so the pipeline itself as a seawater intake device can be used as an anchor line for seawater utilization equipment floating on the sea. There is no need to provide a separate mooring anchor line to the above seawater utilization equipment, and unlike conventional methods, there is no need to provide a special mooring line to the seawater intake device itself, and it can be installed in the desired sea area. became simpler and removed.

It is also possible to move the system, and installation costs and water intake costs can be reduced.

[Brief explanation of drawings]

FIG. 1 is an overall configuration diagram showing an example of applying the seawater intake device according to the present invention to a fishery aquaculture plant, and FIG. 2 is a partially enlarged view showing details of the seawater intake device according to the present invention.
FIG. 3 is also an enlarged view of the main part. 1... Water intake pipeline, 2a-2n... Pipe, 3, 7.8... Universal joint, 4... Flexible pipe, 5... Floating body, 6... Floating structure, 9 ... Pipe anchor, 1o... Water intake, 12... High pressure air supply hose, 13.・Solenoid switching valve, 14...signal cable.

Claims (1)

[Claims] a plurality of pipes having a desired diameter and a desired length that communicate with each other;
A flexible joint connects each pipe in a straight line and bendable to form a water intake pipeline, and a flexible joint is provided on each of the pipes and adjusts the weight of the pipe body underwater to allow it to sink and float on its own. 1. A seawater intake device comprising: a floating body; and a pipe anchor provided at one end of the water intake pipeline having a water intake port.