JPH1193150A - Suction port for recovering oil, oil recovering device, and oil recovering boat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction port for recovering oil, an oil recovering device, and an oil recovering boat to promptly cope with an emergency situation, such as an oil outflow accident and have maneuvability. SOLUTION: A suction port 3 for recovering oil comprises a casing-form suction port body 4: an intake opening part 5 arranged at the front of the suction body 4; and a connection pipe part 6 on the suction side arranged on the suction side of a fluid suction device 8 arranged at the rear part of the suction body 4 through a coupling pipe 37 and removably connected to the suction side of a fluid suction device 8. An oil recovery boat consists mainly of a hull and an oil recovery device. Further, the suction port for recovering oil comprises a fluid suction device 3; cables 21 and 23 to hold the suction port 3 for recovering oil in a position where an opening upper edge 5a of an intake opening part 5 is floated from a water surface H and in a position where an opening lower edge 5b is sunk in water; a fluid suction device 8 to suck oil C and sea water W; a connection pipe part 30 on the ship side arranged on the suction side of the fluid suction device 8 and connected to a connection pipe part 6 on the suction side of the suction 3 for recovering; a storage tank on the hull side connected to the discharge side of the fluid suction device 8 through a sand sampling hose 9a and a sand sampling pipe 9b; and a discharge pump to drain water in the storage tank to the outside of a ship. Most equipment of a dredger may be diverted to that of this oil recovering boat.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil recovery inlet, an oil recovery device, and a device that can quickly recover oil, oil film, or oil-containing dust floating on the surface of water, for example. It relates to oil recovery vessels.

[0002]

2. Description of the Related Art In recent years, spillage of cargo oil has occurred one after another due to hull rupture due to aging of ships, collision or grounding due to navigation errors, and the like. In such an oil spill, the greater the amount of oil drifting on the shore, the greater the cost, time, and labor required for post-treatment, and it takes an extremely long time to restore the environmental condition before the pollution. Therefore, when an oil spill accident occurs, it is desired to recover oil offshore as soon as possible.

[0003]

However, there are almost no oil recovery vessels in Japan that can operate on the sea with a wave height of 1.5 m or more. Therefore, for example, if a crude oil spill occurs offshore such as the Sea of Japan, oil recovery operations cannot be performed offshore even if oil recovery vessels arrive, and oil spills may approach the coast with low wave heights. I had to wait.

On the other hand, most of sand used as fine aggregate for concrete or ground improvement material for landfill in western Japan depends on sea sand. This sea sand is mainly drawn from the seabed by a dredger and collected by the sand pump along the coast of the Seto Inland Sea and the coast of Kyushu. Most of the above-mentioned dredgers for sea sand sampling adopt the suction sampling method using a pump. At present, the number of these dredgers in operation is estimated to be about 500, and they are scattered throughout Japan. However, these dredgers have become surplus in Japan due to the recent economic downturn.

Here, a general-purpose dredger is shown in FIG. In the dredger 1A shown in FIG.
b, the sand collecting hose 9c and the sand collecting hose 9d
From the hull 2 floating on the seabed B. The tip of the sand sampling hose 9a is connected to the discharge side of the fluid suction device 8, and the rear end of the sand sampling hose 9d is connected to the sand separator 10. A suction port 63 for sand extraction is attached to the ship-side connection pipe section 30 on the suction side of the fluid suction device 8 via a suction-side connection pipe section 66.

A pump holder 18 for holding the fluid suction device 8, a sand collecting pipe 9b, a sand collecting hose 9c, and a sand collecting hose 9
Cables 21, 25, 27, 29 tied to d
Is wound by the winches 20, 24, 26, and 28, respectively, so that the positions and postures of the sand intake 63, the sand extraction tube 9b, and the sand extraction hoses 9a, 9c, and 9d are adjusted. Then, when the fluid suction device 8 is driven, the sand on the seabed B is sucked together with the seawater from the sand intake 63 and sent to the sand sorter 10. The sand and seawater from which the gravel and shells have been separated by the sand sorter 10 are fed into a storage tank 12 via a chute 11. Then, the seawater in the storage tank 12 is drained outboard by a drain pump or the like.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and in the event of an oil spill, in addition to existing equipment equipped with a general-purpose dredger, a relatively simple attachment is quickly mounted. It is an object of the present invention to provide an oil recovery inlet, an oil recovery device, and an oil recovery ship that can respond quickly to an emergency and have high mobility by making small changes or additions to the hull configuration.

[0008]

In order to achieve the above-mentioned object, an oil recovery inlet according to the present invention comprises: a housing-shaped inlet main body;
An intake opening provided on the front surface of the suction body, an upper edge of the opening floating above the water surface, and a lower edge of the opening disposed at a position submerged in water, and a suction opening of an external fluid suction device provided at a rear portion of the suction body. And a suction-side connection pipe portion detachably connected to the side.

Further, in the oil recovery apparatus of the present invention, the oil recovery inlet and the water intake opening of the oil recovery inlet in the above configuration are arranged such that the upper edge of the opening floats above the water surface and the lower edge of the opening is submerged. A suction port holding means, a fluid suction device for sucking outboard fluid, a ship side connection pipe portion provided on the suction side of the fluid suction device and connected to the suction side connection pipe portion of the oil recovery suction port, It has a storage tank mounted on the hull and connected to the discharge side of the fluid suction device, and a drain pump connected to the lower part of the storage tank and draining water in the storage tank.

Further, in the above construction, at least a hull, a suction port holding means, a fluid suction device, a ship side connection pipe part of the dredger, as a hull, a suction port holding means, a fluid suction device, a ship side connection pipe, a storage tank, and a drainage pump. Oil recovery vessels using storage tanks and drainage pumps will be adopted.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a conceptual view for explaining an oil recovery boat according to an embodiment of the present invention, FIG. 2 is a side view showing the oil recovery boat, FIG. 3 is a plan view showing the oil recovery boat, and FIG. It is a principal part side view which shows the structure near the fluid suction device with which the suction port was mounted. In each figure, the oil recovery vessel 1 is not limited in terms of capacity or size, but here, for example, a vessel having a gross tonnage of about 500 tons and a tonnage of about 1500 m ³ is applied.

The oil recovery boat 1 mainly includes a hull 2 and an oil recovery device E. The oil recovery device E includes a storage tank 12 typified by a cargo hold, a sand sorter 10 as a dust capturing device for sorting sand and seawater from shells and gravel,
A chute 11, which guides sand and seawater to a storage tank 12, a storage tank 12
A drain pipe 13 connected to the lower part of the storage tank 12 for draining the seawater W in the storage tank 12, a connecting pipe 9 including a sand collecting hose 9a, a sand collecting pipe 9b, a sand collecting hose 9c, and a sand collecting hose 9d;
A winch 20 that winds a cable 21 attached near the fluid suction device 8, a winch 22 that winds a cable 23 attached near the tip of the sand extraction tube 9b, and a cable 25 attached near the rear end of the sand extraction tube 9b. Winch 2
4 and a sand tube holder 31, 32, 33 for placing and storing the sand tube 9b when not in use.

More specifically, the oil recovery boat 1 has almost all the main components, such as the hull 2, the winch 20, the cable 21, the fluid suction device 8, the ship-side connection pipe 30, the connection pipe 9, and the sand separator 10. The components provided in the general-purpose dredger 1A (see FIG. 12) are used as they are, the storage tank 12, the drain pump 13 and the drain pipe 14.

The connection pipe 9 connects the fluid suction device 8 and the sand sorter 10. A bypass pipe 15 connected to an opening on the upper surface of the storage tank 12 is branched and connected to the sand sampling hose 9 d in front of the sand sorter 10. Further, a switching valve 16 is provided in the sand sampling hose 9 d downstream of the branch position, and a switching valve 17 is provided in the bypass pipe 15.
Here, the capacity of the storage tank 12 is about 1000 to 3000 m ³ .

The fluid suction device 8 is, for example, 300 to 500 m ^3.
An electrically driven submersible sand pump having a strong suction capacity of about 1 / hour can be used to suck fluid such as seawater, oil, sand, and mud. As shown in FIG. 4, the fluid suction device 8 is fixed to a pump holder 18, and a suction side thereof is provided with a ship-side connection pipe portion 30 made of a flange or the like. On the discharge side of the fluid suction device 8, a sand sampling hose 9a,
The universal joint 19 and the sand pipe 9b made of steel pipe are connected in order. The pump holder 18 is lifted by the winch 20 via the cable 21 wound around the upper pulley 35. Also, the sand extraction pipe 9b near the universal joint 19
Is lifted by the winch 22 via the cable 23 wound around the upper pulley 36.

As shown in FIGS. 5 and 6, the oil recovery suction port 3 has a fan-shaped housing-shaped suction body 4 having a water intake opening 5 on the front surface.
It is mainly composed of A water collecting hole 38 is formed in a lower rear portion of the suction main body 4. The water collecting hole 38 is connected to the suction-side connecting pipe portion 6 via the connecting pipe 37. The suction-side connection pipe 6 is formed of a flange or the like that can be bolted, and is detachably connected to the ship-side connection pipe 30 on the suction side of the fluid suction device 8.

As shown in FIG. 7, the sand sorter 10 includes a casing 54 which is inclined downward toward the waste dumping gutter 34, and a cage 55 for mooring dust and oil balls in the casing 54. A lid plate 56 for sealing the casing 54 in front of the waste dumping gutter 34 and a chute for charging the oil C and the seawater W into the storage tank 12 that are connected to the casing 54 below the pen body 55 and pass through the pen body 55. It has a mouth 11a. In addition, the fluttering gutter 34
A sand sampling hose 9d is connected to the lower surface of the casing 54 on the opposite side from the above. The chute opening 11a may be connected to the entrance of the chute 11 or may be directly connected to the upper opening of the storage tank 12. In the sand sorter 10, at the time of oil recovery, a wire mesh (not shown) for gravel sorting is removed, and a passage to the waste dumping gutter 34 is blocked by a cover plate 56. In addition, when an oil ball is moored on the child body 55 during the oil recovery operation, the oil ball is finely crushed with a hammer or the like and put into the storage tank 12.

Next, the oil recovery operation of the oil recovery boat 1 will be described. First, the switching valve 17 is closed and the switching valve 1
The piping lineup is completed so that 6 can be opened and the bypass piping 15 can be used. In addition, winch 20,
The fluid suction device 8 is held near the water surface H by the drive of the motor 22 (see FIG. 4). At this time, the oil collecting suction port 3 is arranged such that the upper edge 5a of the water intake opening 5 floats above the water surface and the lower edge 5b of the opening is submerged. That is, the winches 20, 22 and the cords 21, 23 are
It is an example of the mouthpiece holding means of the present invention.

Then, when the power of the fluid suction device 8 is turned on and driven, the oil C on the water surface H is sucked by the fluid suction device 8 together with the seawater W, and the sand sampling hoses 9a, 9c, 9d,
Storage tank 1 via sand extraction pipe 9b and bypass pipe 15
It is thrown into 2. In the storage tank 12, oil C and seawater W
Are separated up and down by the difference in specific gravity. Then, seawater W
Is filtered by sand S (see FIG. 2) at the bottom of the storage tank 12 and then drawn out by a drain pump 13 as in the case of the dredger 1A and drained out of the boat via a drain pipe 14.

The storage tank 12 may employ a simple cascade tank system for light oil instead of the above-mentioned filter system using sand S. In this simple cascade tank system, the upper oil layer is retained by a partition plate hollowly disposed in the storage tank 12, while the lower seawater is allowed to pass below the partition plate and then overflow from the subsequent dam plate. It was made. Further, in the case where a pump on the land side cannot be used for transferring the recovered oil to the oil C stored in the storage tank 12, a transfer pump dedicated to the oil may be provided on the ship side. Further, since the dredger 1A is equipped with a grab bucket crane (not shown) for unloading, especially when processing oil C with high viscosity and dust mixed, the oil C in the oil fence or the like is directly grabbed and picked up. To the storage tank 12.

That is, if the oil recovery suction port 3 according to this embodiment is used, the general-purpose dredger 1A can be diverted as the oil recovery boat 1 with almost no modification. By the way, since there are many dredgers in various parts of Japan, it is possible to respond promptly even if an oil spill occurs anywhere in the country by keeping the oil recovery suction port 3 constantly throughout the country. For example, simply calling the dredger 1A, which is navigating nearby, to call for dispatch, and replacing the suction port 63 for sand extraction (see FIG. 12) with the suction port 3 for oil recovery at the nearest reserve, a large number of vessels as the oil recovery vessel 1 immediately Can be dispatched. Therefore, oil recovery can be performed with extremely high mobility.

By the way, in order to efficiently suck the oil C floating on the sea surface, it is necessary to make the oil recovery suction port follow up and down movement of waves as much as possible. As the structure for that, the suction port for oil recovery in FIGS. 8 and 9 is exemplified. First, as shown in FIG. 8, the oil recovery port 3a is made movable by the flexible joint 7, and the oil recovery port 3a can be swung up and down by the support column 42 and the spring cylinder 43 fixed on the upper surface of the connecting pipe 37. The method to support is mentioned. That is, the winches 20, 22 and the cable 21,
The configuration provided with the flexible joint 7, the support column 42, and the spring cylinder 43 in addition to the component 23 is another example of the suction port holding means according to the present invention.

On the other hand, as shown in FIG. 9, in order to further improve the ability to follow waves, a twin-body type float 39 is provided.
One that uses the wave compensating device 44 to smoothly follow the oil recovery inlet 3b.

The wave compensating device 44 includes a rope 46 fastened to the oil recovery suction opening 3b, a davit 45 for holding the rope 46 above the boat, and a pulley 47 for guiding the rope 46 smoothly. 50, 51; a piston body 49 that slides in the cylinder body 48 to move the rope 46 up and down; and a winder 52 that winds the rope 46 in order to determine the initial height position of the oil recovery inlet 3b. And an accumulator 53 which is in communication with the inside of the cylinder body 48 and is filled with nitrogen gas. According to the wave compensating device 44, the cylinder body 48 and the piston body 49 communicating with the accumulator 53 filled with the nitrogen gas absorb the vertical movement caused by the waves, so that the oil recovery inlet 3b can be adjusted to the waves well. Has become.

FIGS. 10 and 11 show an oil recovery port suitable for the oil recovery boat shown in FIG. The oil recovery suction port 3b shown in FIG. 10 has two water collection holes 38,
The double-body type floats 39, 39 are attached to both side surfaces of the suction main body 4a. The rear portions of the floats 39, 39 are connected and fixed by a support rod 40. The suction main body 4a is configured to be vertically swingable with respect to the connecting pipes 37, 37 through the interposition of a swivel joint 41.

As described above, while the buoyancy is applied to the oil recovery port 3b by the floats 39 and 39, the oil recovery port 3b is suspended and held by the wave compensating device 44, so that the oil recovery port 3b is protected against waves. Therefore, it can be made to follow more smoothly. However, as shown in FIG. 11, an oil recovery inlet 3c having a suction main body 4b having only one water collecting hole 38 may be used. That is,
In addition to the winches 20, 22 and the ropes 21, 23, the float 39, the wave compensator 44, and the swivel joint 4
The structure provided with 1 is another example of the mouthpiece holding means according to the present invention.

In the past, there was no oil recovery device capable of recovering oil at sea with a wave height of 1.5 m or more. However, the oil recovery device of the present invention is adapted to follow waves, so
m, oil recovery can be sufficiently performed, and it can be said that the stormy weather type oil recovery device is used. In addition, this oil recovery device uses a fluid suction device that has a strong suction power as it sucks sand etc., so even high viscosity oil can be sucked up,
It can also be called a high-viscosity oil-compatible oil recovery device.

The oil recovery inlets 3, 3 described so far.
The rear ends of the oil fences are attached to both sides of the water intake openings 5 in a, 3b and 3c, respectively, and the oil fences are laterally extended from the hull so as to be fan-shaped and arranged forward. If the front end of each oil fence is locked to the support arm, oil can be collected and collected from a wider surface of the water. In addition, the oil recovery vessel is towed with another oil storage barge, and the oil collected in the storage tank of the oil recovery vessel is transferred to the oil storage barge in a timely manner using an oil transfer pump, etc. Can be engaged. The fluid suction device used in the present invention is not limited to the above-described electric drive type, but may be, for example, a hydraulic drive type or the like. Also,
When the capacity of the existing fluid suction device is too large, a relatively small fluid suction device having a capacity of, for example, about 50 m ³ / hour may be separately mounted on the hull, and the oil may be recovered by using this. Needless to say, the oil recovery vessel of the present invention is not limited to the one in which a dredger is diverted, and the entire vessel may be newly constructed exclusively for oil recovery. In that case, the oil recovery port may be provided integrally on the suction side of the fluid suction device.

[0029]

As described above, according to the oil recovery suction port of the present invention, since the suction side connection pipe portion detachably connected to the external fluid suction device suction side is provided, water and
If the ship has a fluid suction device that can suck fluid such as oil, sand, or mud, and a storage tank that stores the sucked fluid, it can be easily attached as an attachment instead of the original suction port for fluid collection to collect oil. Can be offered.

According to the oil recovery apparatus of the present invention, the oil recovery port is connected to the suction side of the fluid suction apparatus, and the suction port holding means connects the water intake opening of the oil recovery port to the upper edge of the opening. Is floated from the water surface and the lower edge of the opening is held at a position where it is submerged, so that the oil drifting on the water surface can be reliably collected on the hull.

And since most of the components other than the suction port are diverted from those of the dredger, if an oil spill accident or the like occurs, simply replace the suction port for sand extraction with the suction port for oil recovery, and immediately Can be dispatched as an oil recovery vessel. Therefore, oil recovery can be performed with extremely high mobility.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram illustrating an oil recovery boat according to an embodiment of the present invention.

FIG. 2 is a side view showing the oil recovery boat.

FIG. 3 is a plan view showing an oil recovery boat.

FIG. 4 is a side view of a main part showing a configuration near a fluid suction device equipped with an oil recovery suction port according to the embodiment.

FIG. 5 is an external view showing an oil recovery port.

FIG. 6 is a partial plan view showing the oil recovery suction opening.

FIG. 7 is an external view showing a sand sorter.

FIG. 8 is a side view of a main part showing a configuration near a fluid suction device equipped with an oil recovery suction port according to another embodiment.

FIG. 9 is a side view of a main part showing a configuration in the vicinity of a fluid suction device equipped with an oil recovery suction port according to still another embodiment.

FIG. 10 is a partial plan view showing another example of the oil recovery suction port.

FIG. 11 is a partial plan view showing still another example of the oil recovery port.

FIG. 12 is a schematic side view showing a general-purpose dredger.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Oil recovery boat 1A Dredger 2 Hull 3, 3a, 3b, 3c Oil recovery inlet 4, 4a, 4b Suction main body 5 Water intake opening 5a Opening upper edge 5b Opening lower edge 6 Suction side connection pipe part 7 Flexible joint 8 Fluid suction Apparatus 9 Connection pipe 12 Storage tank 13 Drain pump 14 Drain pipe 20,22 Winch 21,23 Rope 30 Ship side connection pipe section 39 Float 41 Swivel joint 42 Strut 43 Spring cylinder 44 Wave compensation device C Oil E Oil recovery device W Seawater H Water surface

Claims (3)

[Claims] 1. An intake main body having a housing shape, an intake opening provided on a front surface of the intake main body, an upper edge of the opening floating above the water surface, and a lower edge of the opening disposed at a position submerged in water, A suction-side connection pipe portion provided at a rear portion and detachably connected to a suction side of an external fluid suction device. 2. An oil retaining opening according to claim 1, and a suction opening retaining portion for retaining an intake opening of the oil collecting intake at a position where the upper edge of the opening floats above the water surface and the lower edge of the opening submerges. Means, a fluid suction device for sucking fluid outboard, a ship-side connection pipe portion provided on the suction side of the fluid suction device and connected to the suction-side connection pipe portion of the oil recovery suction port, and mounted on the hull. An oil recovery device comprising: a storage tank connected to a discharge side of a fluid suction device; and a drain pump connected to a lower part of the storage tank to drain water in the storage tank. 3. A hull, a suction port holding means of a dredger, at least as a hull, a suction port holding means, a fluid suction device, a ship side connection pipe section, a storage tank, and a drainage pump according to claim 2.
An oil recovery ship using a fluid suction device, a ship-side connection pipe, a storage tank, and a drainage pump.