JPH115590A - Oil recovery vessel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform an oil recovery work in also a high wave and high sea area by communicating an oil recovery pool and an oil processing pool provided on the front and lower side of the oil recovery pool by the vertical movement opening and closing of a front part partition plate. SOLUTION: When floating oil is accumulated within an oil recovery pool 3, a stern part partition plate 5 is raised, a front part partition plate is vertically moved after the oil recovery pool 3 is temporarily closed, the communicating part of the oil recovery pool 3 and an oil processing pool 13 is opened and recovery oil is flowed into the side of the oil processing pool 13. At this time, solidified oil is carried to a solidified oil recovery tank 14 by an oil combing conveyor 15, liquid oil contained in sea water is dropped in the oil processing pool 13 and is accumulated, because recovery oil is introduced through the oil combing conveyor 15. Further, solidified oil accumulated in the solidified oil recovery tank 14, which is properly put in a drum can, etc., is stored in a solidified oil recovery warehouse.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil recovery vessel for recovering spilled oil at sea, and more particularly, to a structure of an oil recovery boat capable of recovering spilled oil even in the open sea or in a sea area where the wave height is high in stormy weather. It is related to.

[0002]

2. Description of the Related Art In a conventional oil recovery vessel, since spilled oil is floating on the sea surface, a floating oil intake and a weir are provided along a draft line of the hull so as to scoop the floating oil from the sea surface. I have. That is, the surface portion of the sea surface overflows through the intake port and the weir and is taken into the hull (oil recovery tank). Although the height of these intakes and weirs is adjustable, there are waves on the sea surface, and it is impossible to scoop only the surface layer of the sea surface. It will take in seawater. Therefore, for example, even if oil can be recovered in a calm sea area where the wave height is less than 1 m, there is a problem that the oil cannot be recovered in a high wave high sea area, or a very large amount of seawater is taken in and the recovery efficiency is not improved. .

There has also been proposed a semi-submerged oil recovery boat in which the hull is half-submerged in the oil floating sea area and the floating oil is collected together with seawater in an oil recovery pool provided on the hull. Nevertheless, there is the above-mentioned disadvantage that a large amount of seawater flows into the high-wave high-sea area and the recovery efficiency is not improved. Further, there is a system in which an oil recovery device mounted on a pontoon or the like is floated on the sea to collect spilled oil, and the recovered oil is transferred from the oil recovery device to the hull side. Means were needed to transfer the recovered oil to the ship, and in high seas and high seas, recovery was not possible or recovery efficiency was poor, as described above.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks of the prior art. Even in a low wave high sea area, a high wave high sea area, for example, even when the wave height is about 3 to 4 m, the oil can be efficiently used. The purpose is to obtain an oil recovery vessel that can perform recovery work.

[0005]

SUMMARY OF THE INVENTION The present invention comprises a hull on both sides of the hull, a bottom provided at a position lower than the water line, a vertically movable front partition, and a tiltable stern partition. The oil recovery pool is formed by the vertical movement of the front partition plate to open and close the oil recovery pool and the oil treatment pool provided below and forward of the oil recovery pool, and the stern partition plate is tilted so that the oil is collected. The intake weir was made submerged on the stern side and formed as an inclined weir protruding from the sea surface toward the bow side. Further, a weir plate is arranged so as to be connected to the inclined stern partition plate, and the oil intake weir is extended.

[0006]

Embodiments of the present invention will be described below. FIG. 1 is a perspective view showing the concept of an oil recovery boat according to the present invention, and FIG. 2 is a side sectional view of the same. Reference numeral 1 denotes an oil recovery vessel main body, and 2 denotes both sides of the oil recovery vessel. 3 is an oil recovery pool,
4 is the bottom of the recovery pool provided below the draft line, 5 is the stern partition plate provided at the stern end between both sides 2 and 2 so as to be tiltable, and 6 is installed on both sides 2 and 2 , A winch for tilting the partition plate 5, 7 is a front partition plate of the oil recovery pool 3, which is movably provided up and down, and 8 is both sides 2, 2.
And a vertically moving winch of the front partition plate 7 fixed to the inner surface of the vehicle.

Reference numeral 9 denotes a guide rail which is inclined along the sides 2 of the oil recovery pool 3 so that the stern side is lowered. The guide rail 9 supports the stern partition plate 5 at its lower end when the stern partition plate 5 is most inclined. At the same time, it is connected from the inside of the oil recovery pool 3 and extends to the top of the deck of the oil recovery boat main body 1.
Reference numeral 10 denotes a weir plate, which is composed of several (three in the figure) plate members connected so as to be able to bend, and is movable along the guide rail 9. 11 is a dam board 1
Reference numeral 12 denotes a pulling pusher for pushing out the weir plate 10.

Reference numeral 13 denotes an oil treatment pool provided in the center of the hull, below the oil recovery pool 3. The oil treatment pool 13 communicates with the oil recovery pool 3 by vertically opening and closing the front partition plate 7 of the oil recovery pool 3.
The recovered oil in the oil recovery pool 3 is introduced by natural flow.
Reference numeral 14 denotes a coagulated oil recovery tank configured by partitioning the upper part of the oil treatment pool 13 into one part. Reference numeral 15 denotes an oil drain conveyor (wire mesh) provided between the communication port with the oil recovery pool 3 and the coagulated oil recovery tank 14. Or a slat bar). The collected oil is conveyed to the coagulated oil recovery tank 14 by the oil removal conveyor 15, and only the liquid oil is stored in the oil treatment pool 13.

Reference numeral 16 denotes a storage tank for the coagulated oil, and 17 denotes an oil / water separator provided at a stage subsequent to the oil treatment pool 13, in which the lower layer oil of the oil treatment pool 13 is introduced, subjected to oil / water separation treatment, and separated. The used oil is sent to an oil recovery tank 18 and the treated water is abandoned at sea or sent to a treated water tank 19. Also,
Reference numeral 20 denotes an oil fence, which is drawn out of a storage room formed at the stern of the recovery boat main body 1 and is extended to a floating oil recovery area. 21 is an expansion ship.

Now, the operation of the oil recovery boat having the above configuration will be described. FIG. 3 shows a state of recovering floating oil at a low wave height, and FIG. 4 shows a state in which the recovered oil is introduced into an oil treatment pool. First, the partition plate 5 at the stern is inclined to collect floating oil by overflowing the partition plate 5, but the partition plate 5 is set in a state where the stern side is submerged and the inclined weir protrudes from the sea surface toward the bow side. Since it is used as a floating oil, floating oil can be efficiently collected.

That is, the height (inclination) is adjusted so that the surface layer of the waves hits the upper part of the partition plate 5. The waves are the partition 5
In this case, the rotational energy of the wave particles is converted into water flow energy, and the water is crawled up on the surface of the inclined partition plate 5 and adjusted so that the tip just overflows the partition plate 5. , And flows into the oil recovery pool 3, and most of the seawater having a high specific gravity flows backward in response to the pull of the waves and returns to the sea. It is the same principle as the waves breaking on the shore. By changing the inclination angle of the partition plate 5, the amount of intake can be adjusted according to the thickness of the floating oil layer.

When the floating oil accumulates in the oil recovery pool 3 in this way, the stern partition plate 5 is erected as shown in FIG. 4, the oil recovery pool 3 is closed once, and the front partition plate 7 is raised. Then, the communication section between the oil recovery pool 3 and the oil processing pool 13 is opened, and the recovered oil flows into the oil processing pool 13.
At this time, since the recovered oil is introduced through the oil-removing conveyor 15, the coagulated oil is conveyed to the coagulated-oil collecting tank 14 by the oil-removing conveyor 15, and the liquid oil contained in the seawater is dropped into the oil treatment pool 13 and stored. Will be done. Incidentally, the oil recovery operation into the oil recovery pool 3, the introduction of the recovered oil into the oil processing pool 13, and the oil processing operation may be performed simultaneously, and a series of operations can be performed continuously.

Further, the coagulated oil stored in the coagulated oil recovery tank 14 is appropriately stored in an upper coagulated oil recovery storage 1 placed in a drum or the like.
6. The liquid oil stored in the oil treatment pool 13 is supplied to the oil / water separator 17 and subjected to oil / water separation processing.
The oil is stored in the oil recovery tank 18, and the treated water is dumped at sea. If the oil / water separation treatment capacity is not sufficient and the treated water cannot be directly dumped at sea, the treated water is temporarily stored in the treated water tank 19 and reprocessed or separated, or landed and then treated on land.

FIG. 5 shows a state in which the inclined weir is extended to cope with a high wave height. First, the stern partition plate 5 is tilted so as to be supported by the guide rail 9. Then, the weir plate 10 stored on the deck of the recovery vessel main body 1 is lowered into the oil recovery pool 3 along the guide rails 9 by the operation of the winch 11 and the pusher 12, and is brought into contact with the stern partition plate 5. Let it. In this way, a long inclined weir is formed.

FIG. 6 shows a state in which the floating oil is recovered in this state. As described above, the wave hits the inclined weir formed by the partition plate 5 and the weir plate 10, and then becomes a water current, and flows upward along the surface of the inclined weir. The floating oil goes over the inclined weir and drops into the oil recovery pool 3, and the seawater returns to the sea as a downward current in response to the wave. At this time, it is effective to adjust the inclination angle and height of the inclined weir so that the surface layer of the waves, that is, the layer of floating oil, just runs over the upper end of the inclined weir. The hull is trimmed by sucking and discharging the ballast water of the main body 1. Although the description has been made assuming that the weir plates 10 are connected to each other, it is also possible to adopt a configuration in which each of the weir plates can be moved one by one. In such a case, the height of the inclined weir is adjusted according to the number of used weir plates. can do. Although the winch and the pusher are shown as the moving means of the weir plate 10, it is also possible to use a link mechanism or the like, and to employ an equivalent moving means as appropriate.

[0016]

According to the present invention, the surface layer of the wave is applied to the inclined weir,
By converting the rotational energy of the waves into water flow energy, the water flow crawls upward along the inclined weir surface, and the surface oil is dropped into the oil recovery pool, so that the oil floating on the sea can be recovered efficiently. . Further, since the inclined weir can be extended by applying the weir plate in connection with the partition plate, it is possible to sufficiently receive even a wave having a high wave height, and it is possible to perform oil recovery work even in a high wave high sea area. It has the following effects.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the concept of an oil recovery boat of the present invention.

FIG. 2 is a schematic side sectional view of the oil recovery boat of the present invention.

FIG. 3 is an explanatory view showing a recovery state at a low wave height according to the present invention.

FIG. 4 is an explanatory view showing a state of processing a recovered oil according to the present invention.

FIG. 5 is an explanatory view showing an inclined weir extension state of the present invention.

FIG. 6 is an explanatory view showing a recovery state at a high wave height according to the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 oil recovery vessel main body 10 dam board 2 recovery vessel side port 13 oil treatment pool 3 oil recovery pool 14 solidified oil recovery tank 4 oil recovery pool bottom 15 oil drain conveyor 5 stern partition plate 17 oil-water separator 7 front partition plate 18 oil Collection tank 9 Guide rail

Claims (2)

[Claims] An oil recovery pool is formed by a hull on both sides at the rear of the hull, a bottom provided at a position lower than the draft line, a vertically movable front partition, and a tiltable stern partition. The stern partition plate is tilted so that the stern side is submerged, and an inclined weir protruding from the sea surface toward the bow side is formed. An oil recovery boat provided with an oil treatment pool that communicates with the oil recovery pool through the oil recovery pool. 2. A stern portion in which a guide rail is provided on the inner wall of the oil recovery pool so as to be lower toward the stern side, and a weir plate movable along the guide rail is provided, and the weir plate is tilted. 2. The oil recovery boat according to claim 1, wherein an inclined weir is formed so as to extend in connection with the partition plate.