KR20080014127A - A ship for collecting oil from old-contaminated sea - Google Patents

Abstract

A ship for removing oil spills is provided to facilitate the adjustment of inflow of seawater according to the pollution level of the seawater contaminated by oil spills and to ensure effective removal of oil from the collected seawater using an air bubble generator. A ship(1) for removing oil spills comprises an inflow guide unit(2), an inflow unit(3), an oil collecting tank(4), a filtering tank(5,5'), a seawater discharge unit(6), and an air bubble generator(8). The inflow guide unit guides the inflow of seawater in forward direction of the ship. The inflow unit is mounted on a bow of the ship to form an inflow passage for entering of seawater. The oil collecting tank is mounted within the ship, in communication with the inflow unit. The filtering tank divided from the oil collecting tank by a filtering partition(7). The seawater discharge unit discharges seawater from the filtering tank. The inflow unit comprises an inflow opening/closing door vertically adjustable from the bow of the ship, a door guide part provided on a hull of the ship to guide the inflow opening/closing door, and opening/closing control unit to control the movement of the inflow opening/closing door along the door guide. The oil collecting tank and the filtering tank are in communication with each other through a filtering hole on a lower side of the filtering partition, to filter the seawater only out of the oil and seawater in the oil collecting tank to the filtering tank. The air bubble generator is mounted on a lower side of the filtering hole, on one side of the filtering partition facing the oil collecting tank.

Description

Oil removal vessel {A SHIP FOR COLLECTING OIL FROM OLD-CONTAMINATED SEA}

The present invention relates to an oil collection vessel for separating oil from seawater or broth (hereinafter referred to as "seawater") by injecting oil spilled at sea or a lake into a ship's hull.

As oil tankers operate to transport oil or large vessels that use oil as fuels, oil spill accidents are becoming more frequent. The design of the ship itself is being strengthened to prevent the oil from leaking out of the ship, but the accident of oil spill due to the accident and failure of the ship is not completely prevented. When oil spills on the sea or in lakes, the destruction of ecosystems caused by natural pollution is serious, and the natural and economic aftereffects are severe. Therefore, in the event of oil spills from ships, the spilled oil should be collected before spreading to prevent secondary contamination as much as possible.

Looking at the conventional literature, in order to achieve the above object, to form the inlet port for the seawater flows into the bow of the ship, and to separate the oil from the contaminated seawater by having a separate oil separation facility in the hull or part of the ship The apparatus and method to remove are described. In ships according to the prior art, the suction port formed in the bow of the ship is formed as part of the ship, or is integrally fixed to the ship. In addition, in order to separate the oil using a separate sorting device or by rotating aberration blades or drums, the structure is configured to separate the oil from the sea water.

However, the oil removal vessel of the prior art has a disadvantage in that the inlet of the seawater is integrated with the vessel, so that the height or width of the inlet cannot be adjusted, so that the inflow of the seawater cannot be adjusted. In addition, the use of a separate oil separation facility increases the weight of the vessel and the volume of the tank that can accommodate the seawater in the vessel is relatively small, reducing the efficiency in the removal of the seawater, the drying and maintenance of the vessel The cost increases.

An object of the present invention is to solve the problems of the prior art as described above, and to adjust the amount of seawater flowing into the vessel according to the pollution degree of seawater by the oil, the oil collection vessel that can effectively collect the oil from the seawater Is to provide.

Oil removal vessel according to the present invention, the inflow guide device for guiding the inflow of sea water in the direction of the ship; An inlet device mounted on the bow of the ship to form an inflow path through which seawater can be introduced; An oil collection tank formed inside the ship and in communication with the inflow apparatus; A filtration tank partitioned from the oil collection tank by a filtration partition; And a seawater discharge device for discharging seawater from the filtration tank.

On the other hand, the inlet device, the inlet opening and closing door that is adjustable to move up and down in the bow of the ship; A door guide part provided on the hull of the ship to guide the inflow opening and closing door; And an opening and closing control device for controlling the movement of the inflow opening and closing door along the door guide unit. In addition, the oil collection tank and the filtration tank are communicated with each other through a filter opening formed in the lower portion of the filter partition wall to filter only seawater in the oil and seawater introduced into the oil collection tank.

Inflow guide device according to the invention, the bottom plate portion extending in the direction across the bow of the ship; And a pair of side plate portions connected to both ends of the bottom plate portion, wherein the inflow guide device is mounted on an upper portion of the inflow opening and closing door. In this case, it is preferable that the side plate portion of the inflow guide device is pivotably fixed to both ends of the bottom plate portion so as to rotate relative to the bottom plate portion. In addition, the inflow guide device is preferably pivotally fixed to the upper portion of the inlet open and close door to be stored in the deck of the ship by rotating the inlet guide device when the inlet opening and closing door is closed. In addition, the lower portion of the bottom plate portion of the inflow guide device is preferably provided with a buoyancy device.

The oil collection vessel of the present invention may be provided with a bubble generator in the lower portion of the filter opening on the surface of the filter partition wall facing the oil collection tank. In addition, the filter partition wall may be provided with a blocking device for opening and closing the filter opening. It is preferable that a plurality of such filtration tanks are provided.

The oil collection tank of the oil collection vessel of the present invention is preferably divided into one or more partitions whose upper and lower portions are open.

According to the oil removal vessel according to the present invention, since the inflow guide device of the seawater is mounted to the hull of the vessel so that the inlet of the seawater is integrated with the ship, The inflow can be easily adjusted.

In addition, it is possible to efficiently collect oil from the seawater by separating the inside of the vessel into a plurality of bulkheads and using a bubble generator, without the need for a separate bulky and heavy oil separation facility. Is possible. At the same time, the vessel can be built low in weight and the space in the vessel capable of accommodating seawater can be secured as much as possible.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of the present invention will be described.

1 is a perspective view showing an oil collecting vessel 1 according to the present invention, and FIG. 2 is a front sectional view of the oil collecting vessel 1 taken along AA ′ in FIG. 1. The oil collection vessel 1 of the present invention is provided with an inflow guide device 2 and an inflow device 3 in the bow of the ship 1. An oil collection tank 4 for accommodating sea water contaminated with oil is formed inside the vessel 1, and a filtration tank 5 is formed in contact with the oil collection tank 4 along the inflow direction of the sea water. The filtration tank 5 is able to communicate with the sea through the seawater discharge device (6).

3A and 3B are a plan view and a front view of the inflow guide device 2 mounted on the oil collecting vessel 1 according to the present invention. The inflow guide device 2 is mounted on the bow portion of the ship 1 toward the traveling direction of the ship 1, and serves to guide the inflow through the inlet 35 by collecting seawater contaminated with oil. . The inflow guide device (2) is generally in the shape of a dust trap, and integrated with the bottom plate portion (21) and the bottom plate portion (21) forming a bottom so that seawater can enter the oil collection tank (4) through the inlet (35). The upstanding wall part 22 formed in this is included. The bottom plate portion 21 and the upright wall portion 22 may be inclined and connected to each other so that the inflow of seawater flowing through the bottom plate portion 21 and the upright wall portion 22 may be smoothly made.

In addition, the inflow guide device 2 is provided with a pair of side plate portions 23 and 23 'fixedly pivotally fixed to both ends of the upstanding wall portion 22 so as to collect seawater in which oil is widely spread. . The side plate portions 23, 23 'are connected by the bottom plate portion 21 and the angle adjusting devices 25, 25' using a hydraulic piston device or the like, and have a predetermined angle (H to H ') with respect to the bottom plate portion 21. ) Can be expanded or collapsed. The side plate portions 23 and 23 'each include overlapping plate portions 24 and 24' near both ends of the upright wall portion 22, so that the side plate portions 23 and 23 'are the bottom plate portion 21 (or the upright wall portion). (22)) so that it can be superimposed with the base plate portion 21 when pivoting. Even when the side plate portions 23 and 23 'are expanded or folded, since the overlap plate portions 24 and 24' and the bottom plate portion 21 are always superimposed, a path through which the seawater can be surely introduced through the inlet 35 is provided. can do.

On the rear surface of the upright wall portion 22 of the inflow guide device 2, as described later, the inflow guide device 2 extends beyond the top of the inflow device 3, and the back of the inflow opening and closing door 31 of the inflow device 3. The guide device rotation shaft 26 is formed to be spaced apart from the rear surface of the upstanding wall 22 so that it can be pivotally attached to it. A gear portion 27 is formed at one end of the guide device rotation shaft 26, and the operation of the gear portion 27 will be described later.

The buoyancy device 28 is attached to the bottom of the bottom plate portion 21 of the inflow guide device (2). The buoyancy device 28 serves to prevent the inflow guide device 2 from sinking below sea level while guiding the inflow of seawater.

Figures 4a, 4b and 4c is a side view, a plan view and a rear view showing the inlet device (3) mounted on the oil collecting vessel (1) according to the present invention. The inlet device 3 moves up and down to open and close the bow portion of the vessel 1 to form an inlet 35 through which seawater is introduced. The inlet device 3 includes an inlet opening and closing door 31 serving as a sluice for opening and closing the bow portion of the vessel 1. The inflow opening and closing door 31 may move up and down along a pair of door guides 32 and 32 'formed on the hull of the ship 1. Guide openings 312 and 312 'are formed along both side ends of the inflow opening and closing door 31 so that guided protrusions 312 and 312' may be inserted and guided into the door guides 32 and 32 '. It is supposed to be. The rear surface of the inflow opening and closing door 31 is provided with a pair of fixed ribs 311 and 311 'protruding along the side edges near both side ends. The fixed ribs 311, 311 ′ are wires or ropes wound around the upper pulleys 332, 332 ′ and the lower pulleys 335, 335 ′, which are provided in pairs at the upper and lower portions of the hull of the ship 1, respectively. A part of the 334 is fixed by the fixing devices 313 and 313 '. In the present embodiment, the upper pulleys 332 and 332 'are driven by a driving device 331 such as an electric motor, and the upper pulleys 332 and 332' and the lower pulleys 335 and 335 'are operated to operate the rope 334. Pull up and down to open and close the hydraulic opening and closing door 31 up and down. In some cases, the driving device may be configured to drive the lower pulleys 335 and 335 ', or may be configured to simultaneously drive the upper and lower pulleys. It is also possible to operate the hydraulic opening and closing door 31 up and down using other driving means such as gears and chains instead of the pulleys and wires.

On the other hand, the guide device rotation axis 26 of the inflow guide device 2 is fixed to the upper rear surface of the hydraulic opening and closing door 31 to enable the pivoting movement. The guide device axis of rotation 26 is used to receive and store the inlet guide device 2 on the hull top of the ship 1 when the ship 1 does not remove seawater (see FIG. 5B).

5A and 5B are a plan view and a side view of a bow portion of a ship 1 equipped with an inflow guide device 2 and an inflow device 3 in a state in which the inflow opening and closing door 31 of the inflow device 3 is closed. Indicates. When the inlet opening and closing door 31 is closed, the inlet guide device 2 which is pivotably mounted on the upper part of the inlet opening and closing door 31 is also raised. In this case, a drive unit in which the gear portion 27 provided at one end of the guide device rotation shaft 26 of the inflow guide device 2 is connected to a drive device 29 such as an electric motor provided at the upper part of the ship's hull. Engage with the fisherman 291. Separately, the side plate portions 23 and 23 'may be properly formed by using the angle adjusting devices 25 and 25' connected between the bottom plate portion 21 and the side plate portions 23 and 23 'of the inflow guide device 2. The angle is narrowed (eg, the side plates 23, 23 'are parallel to each other). The inflow guide device 2 in which the side plates 23 and 23 'are narrowed at an appropriate angle rotates about the guide device rotation axis 26 by the drive of the drive device 29 so that the upper portion of the hull of the ship 1 can be rotated. To be received (see FIG. 5B). When the vessel 1 does not remove the oil, the inflow guide device 2 can be accommodated and stored inside the hull, so that the overall volume of the vessel 1 is reduced, and the inflow of sea water is part of the vessel. Compared with the prior art which was provided integrally, securing of various spaces, such as an oil removal tank, can be made easier more efficiently. When the driving device 29 does not pivot the inflow guide device 2, the driving device 29 is preferably configured to release the engagement between the driving gear part 291 and the gear part 27.

1 and 2, the seawater introduced through the inlet 35 by the operation of the inflow guide device 2 and the inflow device 3 first enters the oil collection tank 4. The upper part of the hull of the ship 1 is provided with a tank cover 41 for accessing the oil collection tank 4, so that the oil collected in the oil collection tank 4 can be discharged by a separate device. It will function as a doorway. The oil collection tank 4 is partitioned into a plurality of spaces by a plurality of partitions. In this embodiment, two partitions 42 and 42 'are provided to partition the oil collection tank 4 into three spaces. The partition walls 42 and 42 'have an upper portion of the partition walls 42 and 42' open so that the introduced seawater can cross the partition walls 42 and 42 '. In addition, the lower part is open so that the introduced seawater can pass through the partition walls 42 and 42 'and pass through the partition walls 42 and 42' as well. Therefore, when the seawater mixed with oil flows into the oil collection tank 4 and moves to the stern portion of the ship 1 in the opposite direction to the traveling direction of the ship 1, the oil having a lower density than the sea water is partition walls 42 and 42 '. Above the top, oil-free seawater passes under the bulkheads 42 and 42 '. By installing a plurality of partitions 42 and 42 ', the oil mixed seawater passes through the partitions 42 and 42' and the oil is gradually blocked by the partitions 42 and 42 '. Since it passes through the lower part of 42 and 42 ', the oil of seawater is gradually filtered as the partition 42 and 42' passes. In this case, as shown in FIG. 2, when the rear partition wall 42 ′ is installed higher than the front partition wall 42, the blocking effect of oil by the partition wall is further increased. In addition, the partitions 42 and 42 'also serve to reduce the speed of the seawater flowing into the oil collection tank 4 and allow it to flow naturally, whereby the oil and the seawater can be separated more effectively by the density difference. .

After the oil collection tank 4, a filtration tank 5 is provided adjacent to each other with a filtration partition 7 therebetween. The filtration tank 5 may be provided with only one, but may be provided with a plurality in order to effectively separate the oil and sea water. In this embodiment, two filtration tanks 5 and 5 'are provided.

The filter partitions 7 and 7 'partitioning the oil collecting tank 4 and the filtration tanks 5 and 5' are provided with filter openings 71 and 71 'at the lower portion thereof. Since the seawater should flow only through the filter openings 71 and 71 ', the filter partitions 7 and 7' except for the filter openings 71 and 71 'are completely blocked. In the oil collection tank 4, the seawater separated by oil primarily by the partitions 42 and 42 'meets the filter partitions 7 and 7', where the oil is present only on the surface of the seawater. There is little oil deep in the sea. Therefore, the seawater of the lower layer where no oil is present flows into the filtration tanks 5 and 5 'through the filter ports 71 and 71' formed at the lower part of the filter partitions 7 and 7 '. The seawater flowing into the filtration tanks 5 and 5 'is almost free of oil, and this clean seawater is returned to the sea by the seawater discharge device 6 including the discharge pump 61 and the discharge passage 62. I will go. The filter openings 71 and 71 'of the filtering partitions 7 and 7' are provided with blocking partitions 72 and 72 ', respectively. The blocking partitions 72 and 72' are provided with oil from the oil collection tank 4, respectively. Blocking the filter openings (71, 71 ') when it is going to flow into the filtration tank (5, 5'), or when the other oil collection tank (4) and the filtration tank (5, 5 ') must be blocked from each other. Do it. The barrier ribs 72 and 72 'or the filter holes 71 and 71' may be provided with a sensor to monitor the inflow of oil through the filter holes 71 and 71 '.

As shown in Figs. 1 and 2, it is preferable to mount the bubble generator 8 under the filter openings 71 and 71 'of the filter partitions 7 and 7'. The bubble generator 8 generates bubbles in the lower portion of the filter ports 71 and 71 'to more effectively separate the oil remaining in the seawater flowing through the filter holes 71 and 71' from the seawater. do. The bubble generator 8 includes an air compressor 81, air diffusers 82 and 82 ′, and an air passage 83. The diffuser 82, 82 ′ is disposed below the filter openings 71, 71 ′, and air generated by the air compressor 81 is generated as bubbles while passing through the diffuser 82, 82 ′. . The diffusers 82, 82 'may be constructed using low pressure check valves or the like used in compressors as shown in Figs. 6A and 6B.

In removing oil leaked from seawater using the oil collecting vessel 1 according to the present invention having the above-described configuration, the amount of seawater flowing into the oil collecting tank 4 of the vessel 1 is determined by the vessel (1). ), The direction of travel, the speed of travel, the size and shape of the inlet guide device (2), the opening and closing degree of the inlet opening and closing door 31 of the inlet device (3). Therefore, in the case of using the oil collecting vessel 1 of the present invention, the operating conditions of the vessel 1 are appropriately adjusted in consideration of the degree of contamination of the seawater by oil or the size of the vessel. In addition, by properly adjusting the inlet opening and closing door 31 of the inlet device (3) described above during the operation of the vessel 1, so that the seawater gradually flows in accordance with the sea level to adjust the height of the inlet (35) inflowing seawater It is desirable to adjust. In this case, the inlet opening and closing door 31 may be appropriately adjusted up and down according to the operation of the vessel 1 so that the height of the inflow guide device 2, that is, the height of the inlet 35 is similar to the height of the sea level. It can also be adjusted automatically by an automatic control device (not shown) with a sensor or the like.

1 is a perspective view schematically showing an embodiment of an oil removal vessel according to the present invention.

Figure 2 is a cross-sectional view of the oil removal vessel of the present invention taken along the line AA 'of FIG.

3A and 3B are a plan view and a front view showing an embodiment of the inflow guide device used in the oil removal vessel of the present invention.

Figure 4a is a cross-sectional view showing an embodiment of the inlet device used in the oil removal vessel of the present invention mounted on the vessel of the present invention.

Figure 4b is a rear view showing an embodiment of the inlet device used in the oil removal vessel of the present invention.

Figure 4c is a plan view showing an embodiment of the inlet device used in the oil removal vessel of the present invention.

5A and 5B are a plan view and a cross-sectional view showing that the inlet apparatus equipped with the inflow guide device used in the oil removal vessel of the present invention is mounted on the vessel of the present invention.

6 is a view showing an embodiment of the bubble generator used in the oil removal vessel of the present invention.

Claims (9)

An inflow guide device for guiding inflow of seawater in a traveling direction of the ship; An inlet device mounted on the bow of the ship to form an inflow path through which seawater can be introduced; An oil collection tank formed inside the ship and in communication with the inflow apparatus; A filtration tank partitioned from the oil collection tank by a filtration partition; And a seawater discharge device for discharging seawater from the filtration tank. The inlet device, the inlet opening and closing door that is adjustable to move up and down in the bow of the ship; A door guide part provided in the hull of the ship to guide the inflow opening and closing door; And an opening and closing control device for controlling the movement of the inflow opening and closing door along the door guide unit. The oil collection tank and the filtration tank are in communication with each other through a filter opening formed in the lower portion of the filtration partition wall to filter only the oil and the sea water of the seawater introduced into the oil collection tank to the filtration tank. Oil collection vessels. The method of claim 1, The inflow guide device, the bottom plate portion extending in the direction crossing the bow of the ship; And a pair of side plate portions connected to both ends of the bottom plate portion, wherein the oil collection vessel is mounted on the inflow opening / closing door. The method of claim 2, And the side plate portion of the inflow guide device is pivotally fixed to both ends of the bottom plate portion so as to rotate relative to the bottom plate portion. The method according to any one of claims 1 to 3, The inflow guide device, the oil collection vessel, characterized in that pivotally fixed to the upper portion of the inflow opening and closing door to be stored in the deck of the ship by rotating the inflow guide device when the inflow opening and closing door is closed. . The method according to any one of claims 1 to 3, Oil collection vessel, characterized in that the buoyancy device is provided in the lower portion of the bottom plate portion of the inflow guide device. The method of claim 1, An oil collection vessel, comprising a bubble generator in a lower portion of the filter opening on the surface of the filter partition wall facing the oil collection tank. The method according to claim 1 or 6, Oil filter vessel, characterized in that the filter partition is provided with a blocking device for opening and closing the filter opening. The method of claim 7, wherein Oil collection vessel, characterized in that provided with a plurality of the filtration tank. The method of claim 1, The oil collection tank is an oil collection vessel, characterized in that partitioned by one or more partitions open upper and lower.

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