JP2001348854A - Oil fence device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil fence device for holding an oil fence on a sea surface even when the draft of an oil tanker is changed during, particularly, oil handling work, positively preventing the scattering of an oil to surroundings, if leaked onto the sea surface, and facilitating the start and finish of the work. SOLUTION: The oil fence device comprises a pair of guide columns 1, 2 set a preset distance apart from each other along the board side of the oil tanker T with an oil supply/discharge port therebetween and erected protruding from a sea bottom to the seal surface, a main floating/sinking oil fence 5 arranged between the guide columns 1, 2 in a floating/sinking manner to encircle the sea surface at its lower side on the opposite side to the oil tanker T with a mooring installation therebetween, and a pair of end floating/sinking oil fences 6 extended from the guide columns 1, 2 to the board side of the oil tanker T in a floating/sinking manner. A cylindrical hull sealing device 10 having a buoyancy combining shock absorbing material 11 arranged at the center and being elastic and flexible is mounted at the end of each end floating/sinking oil fence 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for handling oil between a land-based oil cargo handling facility and an oil tank of a tanker, mainly in a state where the tanker is moored at a mooring facility in a port. The present invention relates to an oil fence device for surrounding an oil supply / discharge port and a mooring facility connected to the oil supply / discharge port.

[0002]

2. Description of the Related Art As an oil fence device of this kind, there is a device described in Japanese Patent Application Laid-Open No. Hei 8-3974. In this apparatus, a pair of guide piles 71 are erected from the seabed near the tanker mooring position to the sea surface at a predetermined distance so as to be located on both sides of the oil delivery port of the tanker T.
1, a floating buoy 72, which rises and lowers from the sea floor to the sea surface along the guide pile 71 by adjusting its own buoyancy, is arranged, and the longitudinal ends of the floating oil fence 73 are connected to these floating buoys 72. A short detachable oil fence 74 is detachably connected to the pair of floating buoys 72 surrounding the sea surface below the cargo handling device, and the open ends of the detachable oil fences 74 are connected to the side of the tanker T (side surface). ) Is provided, and a sea surface below the oil outlet of the tanker T is surrounded by a pair of detachable oil fences 74. In FIG.
This shows an oil fence device having this structure.

[0003]

However, the oil fence device described in the above publication has the following disadvantages.

[0004] Draft of the tanker T decreases as the oil stored in the tanker T is sent out, and accordingly,
As shown in FIG. 11B, the open end 75 side of the detachable oil fence 74 rises above the sea surface, a gap is formed between the sea surface and the oil fence 74, and oil may flow out therefrom.

After the oil unloading work from the tanker T has been completed and the tanker T has departed from the port, it is necessary to remove the removable oil fence 74, release the air in the floating oil fence 73, and sink the oil fence 73 to the seabed. It takes time to clean up.

When sinking the floating oil fence 73, when the air inside the floating buoy 72 buoy is evacuated, each of them suddenly descends by their own weight, so they may collide with the seabed and be damaged, so be careful when handling. Cost.

[0007] The present invention has been made in view of the above points, and in particular, can keep the oil fence on the sea surface even if there is a change in draft of the tanker at the time of oil loading work from the tanker,
Even if oil leaks on the sea surface, it can reliably prevent oil from spreading to the surroundings, and it is easy to prepare for work and clear up, etc.
It is intended to provide an oil fence device.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, an oil fence device according to the present invention loads oil between an oil tank of a tanker moored in a port and an oil storage facility on land. At this time, in an oil fence device for surrounding the oil supply / discharge port of the tanker and the tanker mooring equipment connected to the oil supply / discharge port, a predetermined distance is sandwiched between the oil supply / discharge port along the side of the tanker. A pair of guide posts that are separated and protruded above the sea surface from the sea floor, and are disposed between the guide posts so as to surround the lower part of the sea surface opposite to the tanker with the mooring equipment interposed therebetween and to be vertically movable. And a pair of end floating oil fences extending from the respective guide posts toward the side of the tanker and movably up and down. The tip, wearing the cylindrical hull sealing device having elasticity and flexibility provided with the or floating body serves a cushioning material made of buoyant material combined cushioning material.

According to the oil fence device of the present invention having the above-described structure, the sealing performance between the hull and the tip of the oil fence can be improved by closely contacting the hull sealing device at the tip of the end flotation type oil fence to the side of the tanker. Kept,
Oil leakage is prevented. In addition, since the side of the hull and the hull sealing device are kept in contact with each other and are not fixed, even if the amount of oil in the tanker decreases and the draft drops (the hull rises), The hull slides up. In other words, even if the hull rises or sinks (draft changes), the state of the end floating boom including the hull sealing device does not change and is kept straight on the sea surface, and the hull sealing device is By being kept in contact with the side of the ship, oil does not leak from the area surrounded by the hull and the oil fence. In addition, since the hull sealing device is made of a buoyant body and cushioning material, or provided with a buoyant body and cushioning material, the connector for connecting the oil fence body and the hull sealing device is made of metal and has a large specific gravity. Also, as shown in FIGS. 9 (a) and 9 (b), the weight of the oil fence is balanced over the entire length by the buoyant body and cushioning material. It sinks almost evenly. Therefore, it can be used as an oil fence simply by floating the end flotation type oil fence.

When the buoyant body and the cushioning material are not provided in the hull sealing device, and the connector is made of metal or the like and has a high specific gravity, the air in the air tube of the oil fence is reduced as shown in FIG. When the oil fence is pulled out, the tip end side of the oil fence body is more likely to sink than other parts and is bent downward, so that the oil fence does not sink evenly over the length direction. When the oil fence sinks in such a state, if the air fence is raised by supplying air into the air tube, the tip of the oil fence will not be restored straight with the tip side bent. Trouble may occur.

According to a second aspect of the present invention, the hull sealing device corresponds to the depth of the end floating type oil fence so as to be sandwiched around a cylindrical sponge body or a cylindrical hollow portion in plan view. A pair of hull seals that surround in a hollow shape can be joined to each other by a band-like elastic plate material having a width that is made to have a substantially U-shaped structure.

According to the oil fence device of the second aspect, the hull sealing device has a pair of hull sealing portions integrated with the central cylindrical sponge body or the cylindrical hollow portion to act as an air spring, Since it adheres closely to the hull side, excellent sealing performance is exhibited. Also, the hull sealing device is substantially U
The hull sealing device is formed even if the angle of the tip of the oil fence (hull sealing device) that comes into contact with the side of the hull changes depending on the tanker size (ton number), hull shape, contact position, etc. Since the contact area is sufficiently secured, the sealing performance is kept high.

[0013] According to a third aspect of the present invention, a ring-shaped floating sink is provided so that the base end of each end floating oil fence and both ends of the main floating oil fence are loosely fitted to the guide column. The buoy is connected to each of the buoys via a connector, and the base end of the end floating oil fence and the end of the main floating oil fence with respect to the ring-shaped floating buoy are in the open sea (outside the area surrounded by the oil fence).
Side intersection angle α is Utsumi (in the area surrounded by the oil fence)
It is preferable that the connection is made narrower than the side intersection angle β and that the vicinity of the end of the main floating oil fence is urged in the direction in which the tip of the end floating oil fence comes into close contact with the side of the hull. .

According to the oil fence device of the third aspect, the front end (the hull sealing device) of the floating end sinking type oil fence on both sides arranged so as to sandwich the oil outlet on the tanker side is shown in FIG. As shown in c), a moment M acts on each end floating type oil fence 6 in the direction pressed against the side of the tanker, and the hull sealing device 10 at the tip firmly adheres to the side of the tanker. Even if the hull T swings, the tip hull sealing device 10
The oil is not separated from the side of the boom, so that oil does not easily leak from the boom area.

A ring in which at least one of one end of each of the end floating-type oil fences and one end of the main floating-type oil fence is loosely fitted to the guide column so as to float freely. It is preferable to connect to the floating buoy via a flexible connector provided with a flexible adapter made of an elastic body such as a rubber plate having a certain thickness.

According to the oil fence device of the fourth aspect, the flexible adapter is greatly curved as shown in FIG. 12 even when it receives a wave wind or the like (see a two-dot chain line portion in FIG. 12). Since the air passage leading to the air tube is prevented from being blocked, supply and exhaust of the air tube of the oil fence is not hindered. In addition, there is also a fuse-like action to prevent the elastic plate of the flexible adapter from bending and receiving damage to the oil fence body when subjected to strong winds or large rough waves.

As described in claim 5, the hull sealing device attached to the tip of each end-floating type oil fence is positioned at a predetermined distance across a place where the hull sealing device is in close contact with the vessel wall of the tanker. The ropes are bound together by two ropes having one end bound to a supporting portion such as a caisson, dolphin, or anchor, thereby restricting the moving range of the hull sealing device.

According to the oil fence device of the fifth aspect, the oil fence is not only used in a state where the hull sealing device at the tip of the oil fence is in close contact with the vessel wall of the tanker, but also in a state where the oil fence is lowered below the sea surface. The two ropes restrict the hull sealing device from flowing away from the predetermined position, so the hull sealing device was not washed away by strong winds and rough waves, and was also subjected to strong winds and rough waves. The hull sealing device that has been sunk can be easily pulled up and used later.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an oil fence device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view schematically showing an embodiment of an oil fence device of the present invention in a state where a tanker is moored in a mooring facility and an oil cargo handling operation is being performed. FIG. FIG. 3 is a side view of the end floating type oil fence of FIG. 2, FIG. 4 is a plan view showing the main floating type oil fence, and FIG. 5 is a side view of the main floating type oil fence of FIG. 6 (a) is a side view showing a floating buoy, FIG. 6 (b) is a side view showing a connection point between the floating buoy and a main floating oil fence, and FIG. 6 (c) is a floating buoy and an end floating oil. It is a side view which shows the connection part with a fence. FIGS. 7A and 7B are plan views showing connection points between the floating buoy, the main floating oil fence, and the end floating oil fence. FIG. 7A is a plan view, and FIG. 7B is a bottom view. FIG. 8 is a plan view showing the arrangement of supply and exhaust pipes of the mooring facility.

As shown in FIG. 1, the tanker T is moored at a mooring facility 51 to perform an oil cargo handling operation. Mooring equipment 51
Are small caisson 53-5 with a focus on large caisson 52
5 are arranged in series at intervals and one sidewall is aligned, and the caissons 52 to 55 are connected by piers 56 to 58. The large caisson 52 and land (not shown) are connected by a main pier 59.
In 9, an air supply pipe 60 is provided along the main pier 59. Although illustration is omitted, an oil supply / discharge pipe is guided from an oil storage facility such as an oil tank installed on land to an oil outlet (not shown) of the tanker T along the main pier 59 and the caisson 52. Further, another caisson 61, 62 is provided at a lateral distance from the caissons 53, 55 on both sides of the mooring facility 51, and long piers 63, 64 are provided between the caissons 53 and 61 and between the caissons 55 and 62. Connected by

Caissons 53 and 55 on both sides of the mooring facility 51
A pair of guide posts 1 and 2 are provided upright so that the upper ends thereof protrude above the sea surface from the sea floor. A ring-shaped floating buoy 3 is loosely fitted to each of the guide posts 1 and 2, and is disposed so as to be capable of floating. The floating buoy 3 has a structure in which doughnut-shaped steel pipe floats 3a divided into two in the circumferential direction are joined to each other as shown in FIG. 7 and are joined to each other. The floats 3 are arranged on the upper and lower surfaces of the float 3a at intervals in the circumferential direction. A plurality of guide rollers 3b are axially mounted so as to partially project from the center in the radial direction so as to abut on the guide posts 1 and 2. On the lower surface of the float 3a, a shock absorber 3c is provided to protrude downward,
Furthermore, balance weights 3w are provided on the upper and lower surfaces of the float 3a.
Is attached. By these balance weights 3w, the specific gravity of the floating buoy 3 is adjusted to such an extent that buoyancy is slightly generated.

Between the pair of floating buoys 3, both ends of a main floating oil fence 5 are connected via connectors 7. The main floating oil fence 5 is stretched with a number of ropes 14 with anchors 13 so as to surround below the sea surface opposite to the tanker T of the mooring equipment 51 as shown in FIG. On the other hand, on the side of the tanker T, an end flotation type oil fence 6 is extended from a pair of flotation buoys 3 so as to surround an oil feed port (not shown) provided near the center of the tanker T from both sides. I have.

Oil fence 5 and oil fence 6
Are strips 5a each having a predetermined depth as shown in FIG.
The air tubes (hollow portions) 5b and 6b are integrally formed along the length direction at intermediate positions in the depth direction of the strips 5a and 6a. The strips 5a and 6a are made of, for example, a cloth material impregnated with a rubber material.
A number of weights 5w · 6 along the length direction at the bottom of 6a
w are attached at intervals.

The end flotation type oil fence 6 has its base end connected to the flotation buoy 3 via a flexible connector 8, but the end of the oil fence 5 and the base end of the oil fence 6 are different from the flotation buoy 3. As shown in FIG. 7, the connection angle is set so that the angle α on the outside sea (outside the region surrounded by the oil fence) at the mounting angle of both is smaller than the angle β on the inside sea (in the region surrounded by the oil fence). . In this example,
The outer sea side angle α is narrower by 20 ° with respect to the center line and becomes 140 °. On the other hand, at the tip of the oil fence 6,
The hull sealing device 10 is connected via the connector 9. In addition, the air tube 5b of the oil fence 5.6
6b are connected to the supply / exhaust passages 7a / 8a of the corresponding connectors 7/8 as shown in FIG. 6, and the lower part of each supply / exhaust passage 7a / 8a has an attachment port 7 for a supply / exhaust air hose.
c · 8c are provided, and one end of a supply / exhaust pipe (air hose: FIG. 8) 66 is attached to each of the mounting ports 7c · 8c.

The hull sealing device 10 includes a rubber cushion 12 having a width corresponding to the depth of the oil fence 6 with a columnar auxiliary buoyant body / buffer 11 disposed in the center in plan view.
a, a pair of hull seal portions 12 that are hollowly surrounded by each other are joined to each other and formed in a substantially U-shape. In addition,
In the present embodiment, the auxiliary buoyant body / buffer material 11 is formed of a columnar sponge, but may be a columnar cavity, for example.
The auxiliary buoyant body / buffer material 11 is provided to balance the weight of the connector 9 with the connector 9 because the connector 9 is usually heavy because a metal portion occupies most of the metal portion. That is, when the air in the air tube 6b of the oil fence 6 is evacuated, the weight of the connector 9 causes the weight of the connector 9 to be changed as shown in FIGS.
As shown in (c), the tip side of the oil fence 6 tends to hang down and bend. Therefore, by providing an auxiliary buoyant body / buffer material 11 at the center of the hull sealing device 10 to balance the weight with the connector 9, FIG.
As shown in (a) and (b), the oil fence 6 sinks substantially evenly as a whole in a state of extending straight.

As shown in FIG. 7, the angle between the oil fence 5 and the oil fence 6 with respect to the floating buoy 3 is α (140 °), and the end of the oil fence 5 is connected to the hull at the tip of the oil fence 6. 7A, the end of the oil fence 5 is moved in the direction of arrow B, for example, in the direction of arrow B so that the seal device 10 is in close contact with the side of the tanker T, that is, in the direction of arrow A in FIG.
It is urged by being pulled by the attached rope 14.

As shown in FIGS. 1 and 8, the air supply pipe 60
Is connected to an oil fence operating device 65 provided on the caisson 52. A pair of supply / exhaust pipes 66 are piped from the oil fence operating device 65 to the guide post 1 on the side of the caisson 53 and the guide post 2 on the side of the caisson 55, respectively. One end of the supply / exhaust pipe 66 is attached to the attachment port 7c of the connector 7 for use.

The oil fence device according to the present embodiment is configured as described above. The use of the oil fence device according to the present embodiment will be described below.

In FIG. 1, when the tanker T is moored at the mooring facility 51 in the port, the oil fences 5, 6,.
6 is sinking to the seabed along with the guide buoys 1.2 along with the floating buoys 3.3. With tanker T moored,
By operating the oil fence operating device 65 (FIG. 8), air is introduced into the air tube 5b of the oil fence 5 and the air tube 6b of the oil fence 6. This allows
The oil fences 5, 6, 6 float together with the buoy 3 on the sea surface along the guide posts 1, 2.

Since the oil fence 5 is connected in advance to a number of ropes 14 with anchors 13, the oil fence 5 is arranged at a fixed position when floating on the sea surface, and drifting is prevented. On the other hand, the oil fence 6
6 requires adjusting the position of the hull sealing device 10 at the tip end according to the size of the tanker T and the shape of the hull as shown in FIG. (Not shown) or a rod (not shown) moves so as to be in close contact with the tanker T in an appropriate position on the side of the ship. The hull sealing devices 10 on both sides are oil outlets (not shown)
, The oil fence 6 receives the moment, and the hull sealing device 10 comes into close contact with the side of the tanker T as described above. Therefore, in this state, the sea surface of the mooring facility 51 on the side opposite to the tanker T is surrounded by the oil fence 5, and the sea surface below the oil outlet of the tanker T is surrounded by the pair of oil fences 6. Therefore, if the cargo handling operation of the oil is started, the oil fences 5, 6, 6 prevent the oil from being diffused to the surroundings even if the oil leaks from the oil supply port or the like.

When the oil cargo handling operation is completed in this way, or when the operation is completed and the tanker T departs, the oil fence operating device 65 (FIG. 8) is operated to operate the air tube 5b of the oil fence 5 and the oil fence. The air in the air tube 6b is discharged. As a result, the oil fences 5, 6, and 6 can be used together with the floating buoy 3 and the guide post 1
・ Sink below sea level along 2 The long oil fence 5 is connected to a number of ropes 14 with anchors 13 to prevent drifting, and the oil fences 6 on both sides are short and remain almost straight as described above. Since it sinks, there is no troublesome work such as attaching and detaching the oil fence as in the conventional oil fence device described in the above-mentioned publication, and the work of clearing the oil fence is easily completed.

The hull sealing device 10 is not limited to the structure of the above embodiment, and is not shown. For example, the hull sealing device 10 may be formed in a cylindrical hollow body whose upper and lower ends are closed by a rubber plate material 12a, or may be formed in a cylindrical shape. By sticking the rubber plate material 12a integrally on the outer peripheral surface of the sponge body, the whole body can be constituted by the auxiliary buoyant body / buffer material 11. In these cases, the hull sealing device of the above embodiment is also used. 1
The same operation and effect as those of 0 are achieved.

FIGS. 12 and 13 show another embodiment of the oil fence device. In this embodiment, the floating buoy 3 is located between the main floating oil fence 5 and the end floating oil fence 6, respectively. Flexible connector 8
This embodiment is different from the above embodiment in that the connection is made via a. The flexible connector 8 is configured such that one end of a flexible adapter 18 made of a rubber plate having a certain thickness as an elastic body is connected to a metal connector main body 17 by a metal connector 19. Are connected by a metal connecting member 19 connected to one end of the floating buoy 3. Therefore, when the space between the metal connector 7 and the oil fence 6 is bent as shown in FIG. 14 due to a wave wind or the like, the air passage is shut off, so that the supply and exhaust of the air tube 6b of the oil fence 6 becomes impossible. The oil fence 6 may be damaged or the oil fence 6 may be damaged, but there is no such fear.

FIGS. 15 and 16 show means for restricting the range of movement of the hull sealing device 10/10 'provided at the tip of the end flotation type oil fence 6 within a predetermined range. As shown in FIG. 15, the dolphin 20 and the anchor 13 and the dolphin 22 and the anchor 13 as shown in FIG.
Thus, the ropes 15 and 16 of a predetermined length are respectively extended, and the hull sealing device 10/10 'is pulled at the ends of the two ropes 15 and 16. Also, as shown in FIG. 16, for example, one end of one of the ropes 15 is connected to a support of the dolphin 20 so that the moving range of the hull sealing device 10/10 ′ can be restricted not only on the sea surface but also below the sea surface (underwater). 21 (below sea level), the other rope 1
One end of each of the ropes 6 is connected to a dolphin 22 (above the sea surface), and the other end of each of the ropes 15 and 16 is connected to the hull sealing device 10. For this reason, when raising the oil fence 6 from the sunk state, it can be easily performed using the rope 16 on the dolphin 22 side. In addition,
The hull sealing device 10 (10 ') is provided with an auxiliary buoyant body / buffer material 11 at the center thereof to balance the weight with the connector 9, so that the oil fence 6 extends in a straight line, and as a whole, It sinks almost evenly. Moreover, when the oil fence 6 is settled, the movement range is restricted within the hatched area in FIG. 15 within the hatched area in FIG. The configuration of the oil fence device of this example other than the above is the same as that of the oil fence device of FIG. 1, and thus common members are denoted by the same reference numerals and are not shown and will not be described. Reference numeral 23 in FIG. 16 indicates a support of the dolphin 22.

[0036]

As is apparent from the above description,
The oil fence device of the present invention has the following excellent effects.

According to the first aspect of the present invention, the elasticity and flexibility of the hull sealing device at the tip of the end flotation type oil fence is brought into contact with the side of the tanker, so that the sealing performance between the hull and the tip of the oil fence is improved. And oil leakage is prevented. Moreover, even if the amount of oil in the tanker changes and the draft of the hull changes, the state of the end floating oil fence including the hull sealing device does not change and is kept straight on the sea surface. No oil leaks from the enclosed area.

Further, since the hull sealing device is provided with a buoyant body / buffer or is entirely formed of a buoyant / buffer, the connector for connecting the oil fence body and the hull sealing device is made of metal and has a specific gravity. Even when the boom is large, the weight of the boom is balanced over the entire length and the floating fence at the end sinks almost evenly over the entire length, making it easy not only to work after using the boom but also to start using it. It is.

According to the second aspect of the present invention, since the hull sealing device acts like an air spring and closely adheres to the side of the hull, excellent sealing performance is exhibited, and the hull sealing device is formed in a substantially U-shape. Therefore, even if the contact angle of the hull seal device at the tip of the oil fence with respect to the hull side of the hull changes due to the tonnage of the tanker, the hull shape, etc., the contact area of the hull seal device is sufficiently ensured. The nature is kept high.

According to the third aspect of the present invention, a moment acts in a direction in which the hull sealing device at the tip of the end floating type oil fence arranged on both sides of the oil outlet on the tanker side is pressed against the side of the tanker, Since the hull seal device at the tip is securely adhered to the side of the ship, the hull seal device at the tip does not separate from the side of the ship even if the hull sways due to wave wind or the like, and oil leakage is reliably prevented.

According to the fourth aspect of the present invention, the flexible adapter bends greatly even under strong wind or the like, and the air passage to the air tube of the oil fence in the connector is blocked, so that supply and exhaust to the air tube is hindered or the oil fence is blocked. The main body is prevented from being damaged.

According to the fifth aspect of the present invention, the hull sealing device is provided in a predetermined state not only when the hull sealing device at the tip of the oil fence is in close contact with the vessel wall of the tanker but also when the oil fence is lowered below the sea surface. Since the two ropes restrict the stay in the area and the distant flow, the hull sealing device does not flow even in the case of strong winds or rough waves, and it sinks even after receiving strong winds or rough waves. The hull sealing device can be easily pulled up and used.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing an embodiment of an oil fence device of the present invention in a state where a tanker is moored in a mooring facility and an oil cargo handling operation is being performed.

FIG. 2 is a plan view showing the end floating type oil fence of FIG. 1;

FIG. 3 is a side view of the end floating type oil fence of FIG. 2;

FIG. 4 is a plan view showing the main floating oil fence of FIG. 1;

FIG. 5 is a side view of the main floating oil fence of FIG. 4;

FIG. 6A is a side view showing a floating buoy, and FIG.
FIG. 6B is a side view showing a connecting point between the floating buoy and the main floating oil fence, and FIG. 6C is a side view showing a connecting point between the floating buoy and the end floating oil fence.

FIG. 7 is a plan view showing a connection point between the floating buoy, the main floating oil fence and the end floating oil fence in the oil fence device according to the embodiment of the present invention, and FIG. 7 (a) is a plan view and FIG. FIG. 7B is a bottom view.

FIG. 8 is a plan view showing an arrangement of supply and exhaust pipes of a mooring facility in the oil fence device according to the embodiment of the present invention.

FIGS. 9A and 9B are side views showing a state in which the oil fence 6 of the oil fence device according to the embodiment of the present invention extends substantially linearly in a state in which the oil fence 6 extends straight. FIG. 9C is a plan view showing a state in which a moment acts in a direction in which the hull sealing device at the tip of the oil fence device according to the embodiment of the present invention is pressed against the side of the hull.

10 (a) to 10 (c) show the inside of the air tube of the oil fence 6 when the buoyant body / buffer is not provided in the hull sealing device and the connector is made of metal or the like and the specific gravity is heavy. The air fence 6
FIG. 5 is a side view sequentially showing a state in which the tip end side is more likely to sink than other parts and is bent downward.

11A and 11B show a conventional oil fence device provided with a magnetic connection portion, and FIG. 11A is a side view showing a state at the time of starting a cargo handling operation of oil in a tanker, and FIG.
FIG. 11 is a side view showing a state in the middle of the oil loading operation, and FIG.
(C) is a side view showing a state where the oil fence device has been lowered after the completion of the oil handling operation.

FIG. 12 is a plan view of a main part showing an oil fence device according to another embodiment of the present invention.

FIG. 13 is a side view showing the oil fence device of FIG. 12 in an unfolded state.

FIG. 14 is a plan view showing a state in which a space between a metal connector and an oil fence is bent due to a wave wind or the like and an air passage is cut off.

FIG. 15 shows an oil fence according to another embodiment of the present invention provided with means for restricting a moving range of a hull sealing device within a predetermined range in a state where a tanker is moored in a mooring facility and an oil cargo handling operation is being performed. It is a top view which shows an apparatus schematically.

FIG. 16 is a side view below the sea surface showing an oil fence device according to another embodiment of the present invention provided with a means for restricting a moving range of the hull sealing device within a predetermined range.

[Explanation of symbols]

 1.2 Guide pillar 3 Floating / buoying buoy 5 Main floating / floating type oil fence 6 End floating / floating type oil fence 7.9 Connector 8 Flexible connector 10 Hull sealing device 11 Auxiliary buoyant body buffering material 12 Hull sealing part 17 Metal connector body 18 Flexible Adapter 19 Metal connector 20/22 Dolphin 21/23 Prop

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Yasuyuki Kosaka 2-11-14 Shinmori, Asahi-ku, Osaka-shi, Osaka F-term (reference) 2D025 BA08

Claims (5)

[Claims] 1. An oil supply / discharge port of a tanker connected to the oil supply / discharge port when loading / unloading oil between an oil tank of a tanker moored in a harbor and an oil storage facility on land. An oil fence device for surrounding the mooring facility, comprising a pair of guide posts that stand at a predetermined distance along the side of the tanker across the oil supply / discharge port and protrude above the sea surface from the seabed, Between the guide posts, a main floating oil fence disposed so as to be able to move up and down so as to surround the lower side of the sea opposite to the tanker with the mooring equipment interposed therebetween, and from each of the guide posts toward the side of the tanker. And a pair of end-floating type oil fences extending vertically so that the end of each of the end-floating type oil fences is formed of a buoyant body / buffer or provided with a buoyant body / buffer. An oil fence device equipped with a tubular hull sealing device having power and flexibility. 2. The hull sealing device is a band-shaped elastic plate material having a width corresponding to a depth of the end floating type oil fence so as to be sandwiched around a cylindrical sponge body or a cylindrical hollow portion in plan view. 2. The oil fence device according to claim 1, wherein the pair of hull seal portions surrounding the hollow body are joined to each other to form a substantially U-shape. 3. The base of each of the end floating oil booms and both ends of the main floating oil fence are respectively connected to ring-shaped floating buoys that are loosely fitted to the guide posts by connectors. And connecting the base end of the end floating oil boom to the ring-shaped floating sink buoy and the end of the main floating oil fence so that the crossing angle on the open sea side is smaller than the crossing angle on the inland sea. The oil fence device according to claim 1 or 2, wherein the vicinity of the end of the oil sunk fence is biased in a direction in which the tip of the oil sunk fence comes into close contact with the side of the hull. 4. At least one of one end of each of said end floating oil fences and one end of said main floating oil fence is fixed to a ring-shaped floating buoy which is loosely fitted to said guide column so as to float freely. The connection is made via a flexible connector provided with a flexible adapter made of an elastic body such as a rubber plate having a thickness.
The oil fence device according to any one of the above. 5. A caisson, dolphin, anchor, or the like, which is located at a predetermined distance from a position where the hull sealing device attached to the tip of each end floating type oil fence is in close contact with the vessel wall of the tanker. The oil fence device according to any one of claims 1 to 4, wherein the movement range of the hull sealing device is regulated by being bound by two ropes each having one end bound to the support portion.