JP4628818B2 - End mooring device for floating boom - Google Patents

Description

The present invention relates to an end mooring device for an ups and downs type oil fence, and more particularly to an end mooring device for an ups and downs type oil fence which has good sealing properties and can be easily manufactured at low cost.

In general, oil fences that prevent diffusion of oil that has flowed out to the sea surface are roughly classified into floating oil fences and portable oil fences. Usually, a floating sea fence is used for a large sea berth. The floating oil fence is submerged in the sea floor when not in use, and when used, the entire oil fence is It is designed to float on the sea berth and surround it.

And the end part of a float-and-sink type oil fence is connected to the mooring apparatus disclosed by patent document 1, the patent document 2, etc. in order to make it float up and down in a fixed position.

In the mooring device disclosed in Patent Document 1, a wire rope is stretchably stretched between marine structures such as dolphin and the lower end of the same wire guide rope suspended at the middle portion is suspended from the seabed. And a guide cylinder in which an end portion of a floating and sinking type oil fence is connected to the guide rope so as to freely move up and down.

In addition, the device disclosed in Patent Document 2 has a guide pile standing from the sea floor near the mooring position of a tanker or the like to the sea surface, and by adjusting its own buoyancy to the guide pile, the guide pile is placed along the guide pile from the sea floor to the sea surface. It is an apparatus having a structure in which a floating buoy that floats up and down is disposed and an end of a floating oil fence is connected to the floating buoy.

Japanese Utility Model Publication No. 52-42591 JP-A-8-3974

However, first, in the technique disclosed in Patent Document 1 described above, although it is an apparatus that can be easily manufactured at low cost, the wire guide rope swings back and forth due to the influence of tidal currents and waves. Since it is easy and does not settle in a fixed position, it is difficult for the seal member provided in the guide tube loosely fitted to the guide line to be held in close contact with the heel side of the tanker at all times, and there is a difficulty in sealing performance. .

On the other hand, in the technique disclosed in Patent Document 2 described above, the end of the oil fence is connected to a floating buoy that floats and sinks along a standing guide pile from the sea floor to the sea surface. The end of the oil fence can be lifted and lowered reliably at the position, which is a device with good sealing performance, but the creation of a long guide pile that extends from the sea floor to the sea surface, and the guide pile to the sea floor This is a technology that requires cost for standing work and has problems in terms of cost.

The present invention has been made in view of the problems of the background art described above, and its purpose is as follows.
An object of the present invention is to provide an end mooring device for a float / sink type oil fence which has good sealing properties and can be easily manufactured at low cost.

In order to achieve the above-described object, the present invention of claim 1 includes a guide rail fixed in the vertical direction near the sea surface of the marine structure, and a guide wire stretched from the sea floor to the upper end of the guide rail. And a pilot piece that slides along the guide rail and maintains a constant distance between the guide wire and the guide rail, and an auxiliary float that floats and sinks from the sea floor to the sea surface along the guide wire, An end mooring device for a float / sink type oil fence having a structure in which an end of the float / sink type oil fence is connected to the auxiliary float is provided.

According to a second aspect of the present invention, in the end mooring device of the float / sink type oil fence of the first aspect, the auxiliary float is loosely fitted to the guide wire, and the auxiliary float is slid along the guide rail. A slider that also serves as a moving seal member was provided.

According to a third aspect of the present invention, there is provided the end mooring device of the float / sink type oil fence according to the first aspect, wherein the auxiliary float is connected to a slider loosely fitted to the guide wire, and the slider is connected to the guide rail. A sealing member to be contacted was provided.

According to the end mooring device of the float / sink type oil fence of claim 1 described above, when the oil fence is not used, if the buoyancy is reduced by means such as exhausting the air in the oil fence, the guide Along with the auxiliary float that floats up and down from the sea floor to the sea surface along the wire, the oil fence is moored by the guide wire on the sea floor, and ships and the like can go back and forth on the sea surface.

Further, when the oil fence is extended on the sea surface, the buoyancy is increased by means such as supplying air into the oil fence. As a result, the oil fence ascends along the guide wire along the guide wire from the sea floor to the sea surface, and when it reaches the lower end of the guide rail,
Due to the presence of the pilot piece that keeps a constant distance between the guide wire and the guide rail, the auxiliary float floats along the guide rail, and the oil fence can be reliably extended at a fixed position.

In addition, even if the sea surface moves up and down due to tides, waves, etc., the auxiliary float moves up and down at a certain distance along the guide rail, so a seal member that contacts the guide rail is attached to the auxiliary float. The sealing property can be kept good by means such as providing it, and the guide rail can be short enough to allow the sea surface to move up and down such as tides, and most of the guides of the auxiliary float are Since it is the structure performed by a guide wire, it becomes a mooring apparatus which can be produced cheaply and easily.

Moreover, according to the end mooring device of the float-and-sink type oil fence of Claim 2, it is the said Claim 1.
In addition to the functions and effects of the device, the auxiliary float can float and sink along the guide wire in a stable state, and the presence of the slider that also functions as a seal member that slides along the guide rail The seal between the auxiliary float is ensured.

Moreover, according to the end part mooring device of the float-and-sink type oil fence of Claim 3, the said Claim 1 is said.
In addition to the function and effect of the device, the auxiliary float can be easily raised and lowered along the guide wire, and the seal between the guide rail and the auxiliary float can be easily secured. The mooring device can be manufactured more inexpensively and easily.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an end mooring device for a float / sink type oil fence according to the present invention will be described below in detail with reference to the drawings.
Here, FIG. 1 is a conceptual plan view showing an ups and downs type oil fence stretched in the vicinity of a tanker laid on the sea berth, and FIG. 2 is an end mooring device of the ups and downs type oil fence according to the present invention. FIG. 3 to FIG. 6 are a perspective view, a side view, and a cross-sectional view showing a main part of an end mooring device for a float / sink type oil fence according to the present invention.

The oil stored in the tanker T landing on the sea berth S is sent by the oil handling device 1 to the oil storage facility (not shown) constructed on the land via the submarine pipeline 2 from the sea berth S. It is like that. And even if oil flows out to the sea surface in the middle of oil handling, the oil fence 10 is extended on the sea surface below where the oil handling device 1 is provided in order to prevent the oil from spreading.

The oil fence 10 is configured to float and sink at a fixed position by mooring its end portions 10a and 10b to mooring devices 20 and 30, respectively.

In this embodiment, the end portion 10a of the oil fence 10 on the shore side of the tanker T is a mooring device 20 as disclosed in, for example, Japanese Utility Model Publication No. 52-42591. Moored at.
As shown conceptually in FIG. 8, the mooring device 20 is hung with a wire rope 21 stretchable between marine structures S, S constituting a sea berth, and one end fixed to an intermediate portion thereof. The lower end of the guide wire 22 is fixed to an anchor 23 installed on the seabed, and a guide tube 24 is freely fitted to the guide wire 22 so as to be raised and lowered. The end 1 of the oil fence 10 is fitted to the guide tube 24.
It has a structure in which 0a is connected.

On the other hand, the other end 10b of the oil fence 10 is moored by the mooring device 30 according to the present invention.
The mooring device 30 according to the present invention is provided on a ship pier s on which a ship on which a worker enters the sea berth S arrives, and is fixed near the sea surface of the ship pier s as shown in FIG. Guide rail 31, a guide wire 32 stretched from the sea floor to the upper end of the guide rail 31, and slides along the guide rail 31 between the guide wire 32 and the guide rail 31. The pilot piece 33 and the auxiliary float 34 that floats and sinks from the sea floor to the sea surface along the guide wire 32, and the end 10b of the oil fence 10 is connected to the auxiliary float 34. Yes.

The guide rail 31 has a length that can allow sea surface fluctuations due to tides or the like, that is, FIG.
, The length L is designed to be slightly longer than the distance H between the highest level HWL and the lowest level LWL of the sea surface, so that the lower part is immersed in the sea in the pier s supported on the sea surface by piles K etc. It is fixed in the vertical direction.

The guide wire 32 has one end 32a fixed to the hook 35 provided at the upper end of the guide rail 31, and the other end 32b fixed to an anchor 36 installed on the seabed.
Along the guide rail 31, it is stretched in a state of being stretched in a substantially vertical direction.

As shown in FIG. 3, the pilot piece 33 has a base portion 33 a slidably engaged with the guide rail 31 and an arm rod 33 having a hole 37 into which the guide wire 32 is loosely fitted.
b. The pilot piece 33 is restricted from sliding downward by a stopper 38 provided at the lower end of the guide rail 31, and is restricted from sliding upward by the hook 35 provided at the upper end of the guide rail 31. In the meantime, it slides in the vertical direction along the guide rail 11, and the distance between the guide wire 32 and the guide rail 31 is set to a fixed distance which is the length of the armband 33b.

As shown in FIGS. 3 to 6, the auxiliary float 34 is a float body having a substantially cylindrical shape in which a through hole 39 into which the guide wire 32 is loosely fitted is provided and the inside is hollowed out. The auxiliary float 34 is provided with a slider 40 that also serves as a seal member that slides along the guide rail 31 on one side, and a connecting portion 41 that connects the end 10b of the oil fence 10 on the other side. ing. The auxiliary float 34 includes the auxiliary float 3.
4 itself is designed so that the buoyancy of the degree which cancels the weight of the slider 40 and the connection part 41 works.

The oil fence 10 is a strip-like float body formed in a long length as is well known, and is provided with a counterweight 11 at a predetermined interval at the lower end in the width direction,
A buoyancy adjusting unit 12 is provided in which the amount of air is adjusted so that the entire float body floats up to the sea surface or sinks to the sea floor. Further, as shown in FIG. 2, a predetermined amount of air is supplied to and exhausted from the air supply / exhaust means (not shown) provided in the sea berth S via the hose 3 to the buoyancy adjusting unit 12. It has become.

The end portion 10b of the oil fence 10 is connected to the connecting portion 41 of the auxiliary float 34.
As shown in FIGS. 1 and 2, an anchoring member 4 such as a chain fixed to a pile K that supports the sea berth S or an anchor submerged in the seabed is provided at an appropriate position of the oil fence 10. The mooring member 4 fixed to 5 is connected, and the drift of the oil fence 10 is reliably prevented.

Next, an operation method of the oil fence 10 moored by the mooring device 30 according to the present invention configured as described above will be described.
When the oil fence 10 is not used, the air of the buoyancy adjusting unit 12 of the oil fence 10 is exhausted by the operation of an air supply / exhaust means (not shown). As a result, the buoyancy of the oil fence 10 is reduced and the settling starts, and the end portions 10a and 10 of the oil fence 10 are started.
The guide cylinder 24 and the auxiliary float 34 to which b is connected are also smoothly settled along the guide wires 22 and 32 to the seabed while being dragged, and the oil fence 10 is guided by the guide wires 22 and 32 on the seabed. The state is moored via the cylinder 24 and the auxiliary float 34.

When the oil fence 10 is used, a predetermined amount of air is supplied to the buoyancy adjusting unit 12 of the oil fence 10 by operating the air supply / exhaust means. As a result, the buoyancy of the oil fence 10 increases and starts to float.

At this time, as shown in FIG. 8, one end portion 10a of the oil fence 10 floats along the guide wire 22 to the sea surface together with the guide tube 24 loosely fitted to the guide wire 22. 22 is moored at sea level.

On the other hand, the other end 10b of the oil fence 10 floats along the guide wire 32 together with the auxiliary float 34 loosely fitted to the guide wire 32 until reaching the lower end of the guide rail 31 as shown in FIG. Then, when the lower end of the guide rail 31 is reached, as shown in FIG. 5, the pilot piece 33 is lifted while being pushed up. At this time, the pilot piece 33 keeps a constant distance between the guide wire 32 and the guide rail 31, so that the auxiliary float 34 that floats immediately following the pilot piece 33 has a constant distance from the guide rail 31. The slider 40 that also serves as a sealing member provided on the auxiliary float 34 smoothly engages with the lower end 31a of the guide rail 31, and thereafter, as shown in FIG. Ascend along the guide rail 31 to the sea level.

As shown in FIG. 6, if the lower end 31a of the guide rail 31 is tapered and the upper end 40a of the slider 40 also serving as a seal member is opened in an inverted eight-letter shape, Engagement with the slider 40 is performed more smoothly.

The end portion 10a, 10b of the oil fence 10 that has surfaced to the sea surface is mooring device 2 respectively.
1 and 30 and is connected to the anchor member 4 fixed to the pile K or the anchor 5 at an appropriate place thereof, as shown in FIG. 1, the lower sea surface where the oil handling device 1 is provided Even if oil flows out on the sea surface in the middle of cargo handling of the oil from the tanker T, it is possible to prevent the oil from spreading.

In particular, the end 10b of the oil fence 10 moored by the mooring device 30 according to the present invention.
As shown in FIG. 3, since the vicinity of the sea surface where the oil drifts is reliably sealed on the side, good sealing performance can be expected.
Further, as shown in FIG. 1, an oil fence 10 is provided by a mooring device 30 according to the present invention.
If the end portion 10b of the work vessel is moored to the pier pier on which the work ship arrives, the oil fence 1
The work ship can go back and forth in a state where 0 is extended, and the total length of the oil fence 10 can be shortened.

As mentioned above, although the embodiment of the end mooring device of the floating oil fence according to the present invention has been described,
The present invention is not limited to the above-described embodiment, and various modifications and changes are naturally possible within the scope of the technical idea of the present invention described in the claims.

For example, in the above-described embodiment, the auxiliary float 34 is loosely fitted to the guide wire 32, and the slider 40 that also serves as a seal member that slides along the guide rail 31 is provided on one side of the auxiliary float 34. Although the apparatus provided with the connecting portion 41 for connecting the end portion 10b of the oil fence 10 to the auxiliary float 50 as shown in FIG.
It is good also as a structure which connects 0 edge part 10b.

In the structure of the mooring device shown in FIG. 7, a slider 51 loosely fitted to the guide wire 32 is connected to one side of the auxiliary float 50, and a rubber seal member 52 that abuts against the guide rail 31 is provided on the slider 51. And a structure in which a connecting portion 53 with an oil fence is provided on the other side of the auxiliary float 50. By adopting such a structure, the auxiliary float 50 can easily float and sink along the guide wire 32. In addition, since the seal between the guide rail 31 and the auxiliary float 50 can be easily secured, the mooring device can be easily manufactured at a lower cost. In FIG. 7, the above FIGS.
The same members as those in the embodiment shown in FIG.

It is a conceptual top view which showed the ups and downs type oil fence extended in the vicinity of the tanker landing on the sea berth. It is the side view which showed notionally the whole edge part mooring apparatus of the float-sink type oil fence which concerns on this invention. It is the perspective view which showed the principal part of the edge part mooring apparatus of the float-sink type oil fence which concerns on this invention. It is the side view which showed the principal part of the edge part anchoring apparatus of the float / sink type oil fence which concerns on this invention, Comprising: It is the figure which showed the state which the edge part of a float / sink type oil fence floats along a guide wire. It is the side view which showed the principal part of the edge part anchoring apparatus of the float / sink type oil fence which concerns on this invention, Comprising: It is the figure which showed the state which the edge part of a float / sink type oil fence floats along a guide rail. It is sectional drawing of the part which follows the AA line of FIG. It is the perspective view which showed the principal part of other embodiment of the edge part mooring apparatus of the float-sink type oil fence which concerns on this invention. It is the perspective view which showed notionally the prior art example of the edge part mooring apparatus of an ups and downs type oil fence.

Explanation of symbols

DESCRIPTION OF SYMBOLS S Seaverse T Tanker s Passage Pier K Pile 1 Oil Handling Equipment 2 Submarine Pipeline 3 Hose 4 Mooring Member 5 Anchor 10 Oil Fence 10a End of Oil Fence 10b End of Oil Fence 11 Counterweight 12 Buoyancy Adjustment Unit 20 Mooring Device 21 Wire rope 22 Guide wire 23 Anchor 24 Guide tube 30 Mooring device 31 Guide rail 31a Lower end of guide rail 32 Guide wire 32a End of guide wire 32b End of guide wire 33 Pilot piece 33a Pilot piece base 33b Pilot piece arm ３４ 34 Auxiliary float 35 Hook 36 Anchor 37 Hole 38 Stopper 39 Through hole 40 Slider that also serves as a seal member 40a Slider upper end 41 Connection 50 Auxiliary float 5 1 Slider 52 Sealing member 53 Connection part

Claims (3)

A guide rail fixed in the vertical direction near the sea surface of the marine structure, a guide wire stretched from the sea floor to the upper end of the guide rail, and slides along the guide rail, and the guide wire It consists of a pilot piece that keeps a certain distance between the guide rail and an auxiliary float that floats and sinks from the sea floor to the sea surface along the guide wire, and connecting the end of a float-down type oil fence to the auxiliary float. An end mooring device for a floating boom. The float-sink type oil according to claim 1, wherein the auxiliary float is loosely fitted to the guide wire, and a slider serving as a seal member that slides along the guide rail is provided on the auxiliary float. Fence end mooring device. The end portion of the float-sink type oil fence according to claim 1, wherein the auxiliary float is connected to a slider loosely fitted to the guide wire, and a seal member is provided on the slider so as to contact the guide rail. Mooring equipment.

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