JP2018100481A - Oil boom device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil boom device which allows a tanker to escape in a case of a tsunami or the like by forcing a float positioned on a side of a tanker's escaping route to rapidly sink.SOLUTION: A floating oil boom 1 is arranged with forced sinking parts P1, P2 disposed at both sides of a mooring facility 101 and each having weight per unit length heavier than those of the other parts. The oil boom 1 is provided with two exhaust connecting parts 10C for exhausting air from a float 7 which are positioned approximate to the part P2 and are separated apart from a supply/exhaust connecting part 10A on a side to which a tanker T is moored. An exhaust part 21 including an exhaust valve 18 for exhausting air in the float is arranged in a small platform 14 positioned approximate to the exhaust connecting part 10C. Air is allowed to be exhausted through the valve 18 on the small platform 14, as an exhaust hose 22 is guided from the exhaust connecting part 10C to the exhaust part 21 on the small platform 14.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an oil fence device that surrounds a tanker mainly in a state where the tanker is moored at a mooring facility in a harbor.

  2. Description of the Related Art Conventionally, there is known an oil fence device that surrounds the tanker with an ups and downs type oil fence in a state where the tanker is moored at a mooring facility in a harbor (see, for example, Patent Document 1).

  As one of such oil fence devices, for example, an oil fence device 3A shown in FIG. 4 is known. This oil fence device 3A is a mooring facility in which a plurality of floating oil fences (different in length but indicated as 1) are connected in a ring shape via a plurality of connectors 2 and are installed in a harbor and extend in a specific direction. It is configured to surround a tanker T moored along 101. Each oil fence 1 is stretched by a large number of ropes 5 with anchors 4 so as not to move. Here, the mooring facility 101 includes a large platform 12 (second platform), a medium platform 13, and a small platform 14 that are installed so as to face the central portion in the front-rear direction of the tanker T being moored. The (first platform) and the pier 15 connecting them are included, and are installed in a substantially straight line so as to extend in a specific direction.

  The oil fence 1 has a belt-like body 6 having a certain width in the fence vertical direction (depth direction), and a float 7 is integrally provided along the fence longitudinal direction at an intermediate position of the belt-like body 6 in the fence vertical direction. (See FIGS. 5A and 5B). The strip 6 is, for example, a rubber sheet containing a reinforcing base fabric as a core, and a number of weights 8 are provided at intervals below the strip 6 along the longitudinal direction of the fence.

  Two connectors 2 of the plurality of connectors 2 are provided with two supply / exhaust connection portions 10 </ b> A for supplying and exhausting air to perform the float 7. And in the remaining connectors 2, the general connection part 10B which connects the float 7 of the adjacent oil fence 1 mutually is provided.

  The two air supply / exhaust connection portions 10A and 10A sandwich the mooring facility 101 (when the tanker T is moored, sandwich the mooring facility 101 and the tanker T), and are opposite to the side where the tanker T is moored. Is provided.

  In the air supply connection portion 10A, as shown in FIG. 5A, the connection portion 7a of the float 7 of the adjacent oil fence 1 is communicated with a communication hose 31a, and one end portion of the supply / exhaust hose 11 is connected to the communication hose 31a. Are connected to each other. On the other hand, in the general connection part 10 </ b> B, as shown in FIG. 5B, the connection part 7 a of the float 7 of the adjacent oil fence 1 is communicated with the communication hose 31.

  As shown in FIG. 6, the other end of the air supply / exhaust hose 11 relays through the medium-sized platform 13 to the large platform 12, and on the large platform 12, the exhaust valve 18, A pressure gauge 19 is provided. The other ends of the two air supply / exhaust hoses 11 are finally integrated as one hose and connected to the compressor 16. The supply / exhaust hose 11 is configured by connecting a plurality of hoses.

  Then, by operating the air supply valve 17 and the exhaust valve 18 described above with an operation panel (not shown), the air is supplied to the float 7 or the air is exhausted from the float 7. An oil fence operating device that floats and sinks is provided on the large platform 12. In that case, the intermediate position between the air supply / exhaust connection portions 10A and 10A (that is, the position corresponding to the center line passing through the large platform 12 and the hull of the tanker T in FIG. 4) sinks earliest when sinking. Forced subsidence parts P1 and P2 are set.

  Thus, the weight 8 is arranged on the oil fence on both sides of the mooring equipment 101 between the supply / exhaust connection portions 10A and 10A so that the weight per unit length is larger than that of other portions. The forced subsidence portions P1 and P2 are provided. The forced subsidence P1 is the side where the two air supply / exhaust connections 10A, 10A are provided, while the forced subsidence P2 is the side where the tanker is moored.

  The oil fence operation device including the air supply valve 17, the exhaust valve 18, the compressor 16 and the like is installed on the large platform 12 because (i) workers assigned to the mooring facility 101 are usually large. Because it is on the platform 12, it is not necessary to move to another platform or the like when operating the air supply / exhaust of the float 7, and (ii) the distance between the air supply / exhaust connection 10 </ b> A and the exhaust valve 18. This is because the pressure loss in the piping such as the air supply / exhaust hose 11 in the air supply / exhaust operation is small, and the time required for exhaustion is shortened, which is desirable in order to sink quickly. (Iii) The air supply / exhaust hose 11 etc. This is because it is advantageous in terms of cost to shorten the length of the pipe.

JP 2001-348854 A

  By the way, in the oil fence apparatus as described above, there is a demand to reduce as much as possible the time required to sink the floating / floating type oil fence (particularly, the oil fence on the side where the tanker T is moored).

  Therefore, the inventor reduces the distance between the portion for exhausting the air in the float 7 and the forced subsidence P2 on the tanker T side (that is, the tanker T side from the supply / exhaust connection portions 10A and 10A shown in FIG. 4). 4), the amount of air that needs to be exhausted from the float on the tanker T side in order to sink the forced subsidence P2 on the tanker T side is shown in FIG. The present invention has been made with the idea that the settlement time of the float on the side where the tanker escapes (the side on which the tanker is moored) can be further shortened compared to the conventional case shown in FIG.

  It is an object of the present invention to provide an oil fence apparatus that can quickly sink a float on the side from which a tanker escapes and can promptly evacuate the tanker when a tsunami occurs.

  The invention of claim 1 is configured to connect a plurality of floating booms in a ring shape and surround a tanker moored along a mooring facility installed in a harbor and extending in a specific direction. A strip having a constant width in the vertical direction of the fence is provided, and a float is integrally provided along the longitudinal direction of the fence at an intermediate position in the vertical direction of the fence of the strip. A plurality of weights are provided at intervals, and two supply / exhaust connection portions for supplying / exhausting the float to the side opposite to the side on which the tanker is moored with the mooring facility interposed therebetween The weights are arranged between the two air supply / exhaust connection portions on both sides of the mooring facility so that the weight per unit length is larger than that of the other portions. The oil fence device is provided with a forced subsidence part, and the oil fence exhausts from the float near the forced subsidence part on the side where the tanker is moored away from the supply / exhaust connection part. And the mooring equipment includes a first platform installed in the vicinity of the exhaust connection, and has an exhaust valve on the first platform for exhausting the float. An exhaust part is provided by the exhaust valve, and the exhaust connection part and the exhaust part are connected by an exhaust hose to enable exhaust on the first platform.

  In this case, since the distance from the exhaust connection portion to the forced subsidence portion is shorter than the conventional distance from the supply / exhaust connection portion to the forced subsidence portion on the side where the tanker is moored, the tanker The amount of air exhausted from the float, which is required for the settlement of the float on the moored side, is smaller than in the conventional case, and the settlement time can be shortened. Therefore, in an emergency such as the occurrence of a tsunami, the tanker can sail early and evacuate.

  According to a second aspect of the present invention, the mooring facility further includes a second platform that is installed so as to face a central portion in the front-rear direction of the tanker to be moored and is connected to the first platform via a pier. In addition, it is desirable that an oil fence operation device connected to the air supply / exhaust connection portion via an air supply / exhaust connection hose to perform the air supply / exhaust operation of the float is installed on the second platform.

  In this way, the float supply / exhaust operation can be performed on the second platform as in the conventional case.

  According to a third aspect of the present invention, the exhaust valve of the exhaust section is preferably an electromagnetic on-off valve that can be electrically remotely operated from the oil fence operation device.

  In this way, if the exhaust valve is a manual on-off valve, the worker must move on the first platform to perform the exhaust operation. However, since the exhaust valve is an electromagnetic on-off valve, There is no need to move, and it is possible to open the exhaust valve of the exhaust section by electrical remote operation on the second platform and perform the exhaust operation of the float.

  Preferably, the electromagnetic on-off valve is a normally open valve that is opened in a non-excited state.

  In this way, since the electromagnetic open / close valve is a normally open valve, the exhaust valve is opened when the power is lost in the event of an earthquake or tsunami, the float air is exhausted, and the oil fence sinks. Therefore, the tanker can be evacuated.

  As described in claim 5, the exhaust connection portion includes a communication hose that communicates the ends of the floats of adjacent oil fences, and an exhaust hose whose one end is connected to the communication hose, It is desirable that the other end portion of the exhaust hose is connected to the exhaust portion.

  In this way, exhaust can be promoted without impairing the air flow between the floats during supply.

  In the present invention, since the distance from the exhaust connection portion to the forced subsidence portion is shorter than the conventional distance from the supply / exhaust connection portion to the forced subsidence portion on the side where the tanker is moored, the tanker is moored. The amount of air that needs to be exhausted from the float for the settlement of the float on the other side becomes smaller than in the conventional case, and the settlement time can be shortened. Therefore, in an emergency such as the occurrence of a tsunami, the tanker can leave early and leave.

It is a top view which shows roughly the oil fence apparatus of this invention which shows the state where the tanker was moored in the mooring installation. It is explanatory drawing of the oil fence operation apparatus of the said oil fence apparatus. It is explanatory drawing of the exhaust part of the said oil fence apparatus. It is a figure similar to FIG. 1 about the conventional oil fence apparatus. (A) is a detailed view of the supply / exhaust connection portion of the oil fence device, and (b) is a detailed view of a general connection portion of the oil fence device. It is a figure similar to FIG. 2 about the conventional oil fence apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same components as those in the conventional apparatus shown in FIGS. 4 to 6 are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 1 is a plan view schematically showing an oil fence apparatus according to the present invention, showing a state in which a tanker is moored in a mooring facility, and FIG. 2 is an explanatory view of an oil fence operation apparatus of the oil fence apparatus.

  As shown in FIG.1 and FIG.2, the tanker T is moored by the mooring equipment 101, and oil handling work is performed. The mooring facility 101 is centered on a large platform 12 (second platform) on both sides so that a medium platform 13 and two small platforms 14, 14 (first platform) are spaced apart and extend in a specific direction. Arranged in a substantially straight line, the platforms 12, 13, and 14 are connected by a jetty 15, and can move between the platforms 12, 13, and 14. Although not specifically shown, an oil supply / discharge pipe from an oil storage facility such as an oil tank installed on land is connected to the oil delivery port of the tanker T through the large platform 12. Thereby, oil supply / discharge is performed between the tanker T and the oil storage facility.

  Mooring equipment by connecting multiple types of ups and downs type oil fences 1 with different fence lengths (for example, 100m, 95m, 75m) (all displayed as 1 even if the lengths are different) via connector 2 An oil fence device 3 that surrounds the tanker T moored along 101 is configured.

  Further, the oil fence 1 has two exhaust connection portions 10C for exhausting from the float 7 near the forced subsidence P2 on the side where the tanker T is moored away from the two supply / exhaust connection portions 10A and 10A. , 10C are provided.

  The two small platforms 14 and 14 (platforms 14 and 14 installed outside the oil fence 1) respectively installed near the exhaust connection portions 10C and 10C of the mooring facility 101 include an exhaust valve 18 and float. Exhaust parts 21 and 21 for exhausting 7 are provided. That is, the exhaust connection portion 10 </ b> C formed on the connector 2 near the exhaust portion 21 is connected to the exhaust portion 21 via the exhaust hose 22, and the exhaust portion 21 can perform exhaust by the exhaust valve 18. ing.

  As shown in FIG. 3, in the exhaust connection portion 10C, the connection portions 7a of the floats 7 of the adjacent oil fences 1 are communicated with each other through the communication hose 31a in the same way as the general connection portion 10B. The one end of the exhaust hoses 22, 22 is independently connected. The other ends of the exhaust hoses 22 and 22 are connected to an exhaust part 21 (exhaust valve 18) on the small platform 14, respectively. The exhaust hoses 22, 22 are configured by connecting a plurality of hoses.

  The exhaust valve 18 is an electromagnetic on-off valve that can be electrically operated remotely from the oil fence operating device on the large platform 12. Therefore, the exhaust operation of the float 7 can be performed by opening the exhaust valve 18 of each exhaust part 21 by electrical remote operation on the large platform 12. The electromagnetic on-off valve is a normally open valve that is opened in a non-excited state. Therefore, when the power supply is lost during an earthquake or tsunami, the exhaust valve 18 is opened, the air in the float 7 is exhausted, and the oil fence 1 sinks, so that the tanker T can escape.

  According to the oil fence device 3, before the tanker T enters the harbor and is moored in the mooring facility 101, the oil fence 1 is sunk on the seabed. Then, in a state where the tanker T enters the port and the tanker T is moored in the mooring facility 101, the oil fence operating device is operated to drive the compressor 16 on the large platform 12, and the air supply valves 17, 17 While opening, the exhaust valves 18 and 18 are closed, air is introduced into the float 7 of the oil fence 1 through the air supply / exhaust hose 11 at each air supply / exhaust connection 10A, and air is introduced into the float 7 of each oil fence 1 through the communication hoses 31 and 31a. Will flow. In addition, the exhaust valve 18 of the exhaust part 21 is also closed.

  Thereby, air is introduced into the float 7 of each oil fence 1 and floats on the sea surface by the buoyancy of the float 7 into which the air is introduced. Since the oil fence 1 is connected to a number of ropes 5 with anchors 4 in advance, it is placed at a fixed position in a floating state when it floats on the sea surface, and drifting is prevented.

  At this time, the large platform 12 of the mooring facility 101 and the like are also surrounded by the oil fence 1 together with the tanker T. Therefore, even if the oil handling operation is started and the oil leaks out from the oil delivery port or the like, the oil fence 1 prevents the oil from spreading widely around.

  When the oil handling operation is completed, or when the tanker T leaves the port after the operation is completed, the oil fence operation device is operated to open each exhaust valve 18 and supply / exhaust connection portion 10A and The air in the float 7 of the oil fence 1 is exhausted through the supply / exhaust hose 11 and the exhaust hose 22 at the exhaust connection portion 10C. Since the float 7 is connected to each other by the communication hoses 31 and 31a, air is exhausted from all the floats 7. Thereby, the oil fence 1 sinks below the sea level.

  At this time, since the exhaust connection portion 10C is provided closer to the forced sinking portion P2 on the tanker T side than the supply / exhaust connection portion 10A, from the exhaust connection portion 10C serving as an exhaust portion to the forced sinking portion P2 on the tanker T side. Is shorter than the length from the conventional air supply / exhaust connection portion 10A to the forced subsidence P2, and the air required for the settlement of the float 7 on the side where the tanker T is moored. The amount is smaller than before. Therefore, in the case of exhaust from the exhaust connection portion 10C, the settling time of the forced subsidence P2 is shorter than in the case of exhaust from only the supply / exhaust connection portion 10A. When it is not necessary to rush, exhausting through the exhaust hose 22 by the exhaust unit 21 may not be performed. Since all the oil fences 1 are connected to a large number of ropes 5 with anchors 4, drifting is prevented.

  Also, in an emergency situation where the tanker T needs to be evacuated urgently, such as when a tsunami occurs, the oil fence operating device is operated to exhaust the air in the float 7 of the oil fence 1 to leave the port. 1 needs to sink below the sea level. In this case, by providing the exhaust connection portion 10C, the forced subsidence P2 on the escape side of the tanker T can be submerged below the sea surface earlier than the conventional case, and in the conventional case where the exhaust portion 21 is not provided. Compared with this, the settlement time can be shortened. Therefore, the tanker T can leave the port quickly and evacuate.

  Thus, by providing the exhaust connection portion 10C and the exhaust portion 21, the time required for the tanker T to leave the port and evacuate is greatly reduced as compared with the conventional case where they are not provided.

  In addition to the above, the present invention can be implemented with the following modifications.

  (i) In the above embodiment, the two exhaust connection portions 10C and 10C are provided near the forced subsidence P2 on the side where the tanker T is moored away from the two supply / exhaust connection portions 10A and 10A, respectively. The exhaust parts 21 and 21 are provided on the first platforms 14 and 14 installed near the exhaust connection parts 10C and 10C, respectively, and the two exhaust parts 21 and 21 are provided. It can also be set as the structure which has only an exhaust part.

  (ii) In the above-described embodiment, the exhaust connection portion 10C is connected to the one end portion of the two exhaust hoses 22 and 22 independently by the communication hose 31a. It is. Moreover, the diameter of the exhaust hose 22 can be made larger than that of the supply / exhaust connection hose 11 so that the time required for exhaust can be shortened.

  (iii) In the above-described embodiment, the exhaust connection portion 10C has the communication hose 31a connected to one end portions of the two exhaust hoses 22 and 22 independently. It is also possible to provide an electromagnetic on-off valve between the parts to which the hose is connected and close the on-off valve to shut off the communication by the communication hose in order to exhaust efficiently during exhaust.

  (iv) In the above-described embodiment, the weights 8 are arranged closer to the forced sinking lower portions P1 and P2 than the other portions. Instead, weights that are heavier than the other portions are arranged. Thus, it may be allowed to sink quickly, or a combination of increasing the weight arrangement interval and increasing the weight may be used. That is, it is only necessary that the weight is arranged so that the weight per unit length is increased.

  (v) In the above embodiment, the case where the present invention is applied to an existing oil fence apparatus that includes two supply / exhaust connection portions 10A and two forced subsidence parts P1 and P2 in advance has been described. The number of air supply / exhaust connections and forced subsidences included in the apparatus is not limited to two and is not particularly limited. Moreover, this invention is not limited to the case where it applies to the existing oil fence apparatus, It cannot be overemphasized that it can apply also when newly installing an oil fence apparatus.

  (vi) In the above embodiment, the case where one tanker is moored is described. However, the same applies when two tankers are moored side by side or when a plurality of tankers are moored. Can be applied to.

  (vii) In the above embodiment, an electromagnetic on-off valve is used as the exhaust valve 18 of the exhaust part 21 and can be electrically operated remotely from the oil fence operating device. It is also possible to use a valve and perform remote operation by drive control with compressed air.

DESCRIPTION OF SYMBOLS 1 Floating-type oil fence 2 Connector 3 Oil fence apparatus 4 Anchor 5 Rope 6 Strip 7 Float 7a Connection part 8 Weight 10A Supply / exhaust connection part 10B General connection part 10C Exhaust connection part 11 Supply / exhaust hose 12 Large-sized platform 13 Medium size Platform 14 Small platform 15 Pier 16 Compressor 17 Air supply valve 18 Exhaust valve 19 Pressure gauge 21 Exhaust part 22 Exhaust hose 31, 31a Communication hose 101 Mooring equipment P1, P2 Forced sinking T tanker

Claims (5)

A plurality of ups and downs type oil fences are connected in a ring shape and are configured to surround a tanker moored along a mooring facility installed in a port and extending in a specific direction,
The oil fence includes a belt-like body having a certain width in the vertical direction of the fence, and a float is integrally provided along the longitudinal direction of the fence at an intermediate position in the vertical direction of the fence of the belt-like body. A number of weights are provided at intervals along the longitudinal direction,
Two supply / exhaust connection portions for supplying and exhausting the float are provided on the side opposite to the side where the tanker is moored across the mooring facility,
Forced subsidence parts in which the weights are arranged so that the weight per unit length is larger than the other parts are provided on both sides of the mooring facility between the two supply / exhaust connection parts. An oil fence device,
The oil fence is provided with an exhaust connection portion for exhausting air from the float, near the forced sinking portion on the side where the tanker is moored apart from the supply / exhaust connection portion,
The mooring facility is configured to include a first platform installed near the exhaust connection portion,
On the first platform, an exhaust part having an exhaust valve and exhausting the float by the exhaust valve is provided,
An oil fence device characterized in that the exhaust connection portion and the exhaust portion are connected by an exhaust hose to enable exhaust on the first platform. The mooring facility further includes a second platform that is installed so as to face a central portion in the front-rear direction of the tanker to be moored and is connected to the first platform via a pier,
2. The oil fence apparatus according to claim 1, wherein an oil fence operation apparatus that is connected to each of the air supply / exhaust connection portions via an air supply / exhaust connection hose and performs the air supply / exhaust operation of the float is installed on the second platform.   The oil fence device according to claim 2, wherein the exhaust valve of the exhaust unit is an electromagnetic on-off valve that can be electrically operated remotely from the oil fence operation device.   The oil fence apparatus according to claim 3, wherein the electromagnetic on-off valve is a normally open valve that is opened in a non-excited state. The exhaust connection portion includes a communication hose that communicates the ends of the floats of adjacent oil fences, and an exhaust hose that has one end connected to the communication hose, and the other end of the exhaust hose is the exhaust The oil fence apparatus according to any one of claims 1 to 4, which is connected to the section.

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