JP2023173433A - fuel laying sheet - Google Patents

Abstract

To obtain a fuel laying sheet which is easily transported and can be laid so that intervals between fuels in the water are at desired intervals.SOLUTION: A fuel laying sheet comprises: a cylindrical tube 1 in which a liquid fuel is filled; a sheet-like laying auxiliary member which assists a travel of the tube 1 in the water and maintains laying intervals of the tube 1; a coupling tool which couples the laying auxiliary member; and a fixing tool which fixes the tube 1 to the laying auxiliary member, wherein the tube 1 is prevented from being flown away with water and makes the tube to travel in the water while maintaining the laying intervals and allows an easy transportation.SELECTED DRAWING: Figure 1

Description

This technology relates to fuel laying sheets that are laid when removing obstacles. In particular, it relates to a sheet suitable for laying underwater.

For example, when removing an obstacle, there is a device that explodes gunpowder or the like to crush and remove the obstacle. In this device, a mat containing a sponge injected with liquid fuel is laid down, and the liquid fuel is injected and exploded to remove obstacles over a wide area (for example, see Patent Document 1).

Japanese Patent Application Publication No. 11-142100

The above-mentioned device is for laying a mat in a place where there is an obstacle, but when the mat is transported to a place where there is an obstacle, the mat cannot be disassembled or assembled, so the transport efficiency is poor. Furthermore, the above-mentioned device is intended to be used to lay the mat on the ground, and is not intended to be placed underwater or on the bottom of the water (seafloor) in the ocean or the like. Therefore, if a plurality of mats are to be laid over a wide area, the mats will be washed away by water, making it difficult to adjust the spacing between the mats.

In view of the above, it is an object of the present invention to obtain a fuel laying sheet that is easy to transport and that can be laid so that fuels are laid at desired intervals in water.

The disclosed fuel installation sheet includes a cylindrical tube filled with liquid fuel, a sheet-like installation auxiliary member that assists the tube in moving underwater and maintains the interval between the tubes, and a connecting device that connects the installation auxiliary member. and a fixing device for fixing the tube to the installation auxiliary member.

According to this fuel installation sheet, a tube can be fixed to the installation auxiliary member using a fixing device, and a plurality of installation auxiliary members can be connected using a connecting device to form a combined sheet. Then, the laying auxiliary member can be allowed to settle while maintaining the laying interval so that the tubes are not washed away by water. Therefore, the tubes filled with liquid fuel can be arranged at desired intervals underwater, such as by making the intervals between the tubes filled with liquid fuel uniform. Further, since the installation auxiliary member and the tube can be transported and combined at the place of use to form a fuel installation sheet, transport can be easily performed.

1 is a diagram showing the configuration of a fuel laying sheet according to Embodiment 1. FIG. It is a figure showing the composition of the tube concerning an embodiment. FIG. 7 is a diagram showing the configuration of a fuel laying sheet according to Embodiment 2. FIG. 7 is a diagram illustrating connection of porous films 5 in a fuel laying sheet according to Embodiment 2. FIG. FIG. 3 is a diagram illustrating an example of a fuel laying sheet according to Embodiment 1 and Embodiment 2.

Hereinafter, a fuel laying sheet according to an embodiment will be described with reference to the attached drawings and the like. In the following drawings, the same reference numerals are the same or equivalent, and are common throughout the entire embodiment described below. The forms of the constituent elements shown in the entire specification are merely examples, and are not limited to the forms described in the specification. In particular, the combinations of components are not limited to those in each embodiment, and components described in other embodiments can be applied to other embodiments. Here, in order to facilitate understanding, terms indicating directions (for example, "right", "left", etc.) are used as appropriate, but these terms are for explanation purposes only, and the present disclosure is not limited by these terms. It's not something you can do. Further, in the drawings, the size relationship of each component may differ from the actual one.

Embodiment 1.
FIG. 1 is a diagram showing the configuration of a fuel laying sheet according to the first embodiment. In FIG. 1, a fuel laying sheet 100 according to the first embodiment has a plurality of tubes 1, a net 2, a carabiner 3, and a plurality of binding bands 4, respectively. Here, in the following description, the vertical direction in FIG. 1 is assumed to be the length direction, and the horizontal direction is assumed to be the width direction.

FIG. 2 is a diagram showing the configuration of the tube according to the embodiment. The tube 1 is a flexible cylinder filled with liquid fuel. The tube 1 has an outer film portion 11, an inner metal film portion 12, and a center seal portion 13. In the tube 1 according to the first embodiment, the inner metal film part 12 is attached to the entire inner surface of a sheet that is made of a resin film and becomes the outer film part 11. The tube 1 is constructed by forming the sheet into a cylindrical shape and connecting both ends with a center seal portion 13.

The net 2 is a sheet-like installation auxiliary member that assists the tubes 1 as they sink into the water, and supports the tubes 1 so that they are installed with their spacing maintained. Here, although not particularly limited, the net 2 is a resin net. Resin does not corrode unless it is installed for a long time, so it is durable and lightweight. In the first embodiment, the material of the net 2 is, for example, PP (polypropylene). Further, it is assumed that each net 2 of the first embodiment has a width of about 1 [m]. However, the width of the net 2 is not limited to 1 [m]. The width of the net 2 can be determined based on the ease of transportation before combining the fuel laying sheets 100, the effort involved in connecting them, the spacing between the tubes 1, etc. Here, the fuel installation sheet 100 is prevented from sinking into the water until the tube 1 is filled with liquid fuel. Furthermore, during transportation, it is preferable that the fuel laying sheet 100 be as lightweight as possible. Therefore, the net 2 is made of a material having a specific gravity of less than 1, for example. However, even if the difference in specific gravity between the tube 1 filled with liquid fuel and the net 2 is too large, the tube 1 part will settle first, which may disturb the spacing between the tubes 1, so if the specific gravity is too small, The fuel laying sheet 100 is made to sink evenly by making sure that

The carabiner 3 is a connecting device that connects a plurality of nets 2 together. The carabiner 3 is easy to handle and can easily connect the nets 2. The fuel laying sheet 100 in Embodiment 1 has a structure in which nets 2 to which tubes 1 are fixed with binding bands 4 and nets 2 to which tubes 1 are not fixed are alternately connected in the width direction. The fuel laying sheet 100 in FIG. 1 is constructed by, for example, connecting the ends of the net 2 by overlapping each other by about 10 [cm] (0.1 [m]). By making the connecting portions at the ends of the net 2 strong, the connecting portions of the fuel laying sheet 100 are prevented from bending when submerged in water. Therefore, in the entire fuel laying sheet 100, the tubes 1 are arranged side by side at intervals of about 2 [m]. Here, the interval between the tubes 1 is about 2 [m], but it is not limited to this. The intervals between the tubes 1 may be such that, for example, when a plurality of tubes 1 are exploded, an obstacle can be efficiently blown up by shock wave interference. The spacing between the tubes 1 can be adjusted by the number of nets 2 connected between the nets 2 to which the tubes 1 are fixed, the position at which the carabiner 3 is attached to each net 2, and the like. Further, in FIG. 1, the nets 2 are connected only in the width direction, but the invention is not limited to this. The nets 2 may also be connected in the length direction.

Further, a cable tie (Insulock: registered trademark) 4 fixes the tube 1 to the net 2. By fixing the tube 1 to the net 2 using the binding band 4, which is a fixing device, the tube 1 can be easily replaced.

Next, combinations of the fuel laying sheets 100 and the like will be explained. A user fixes the tubes 1 to the net 2 with cable ties 4 at predetermined intervals. Then, the user uses the carabiner 3 to connect each net 2 to a desired width so that the nets 2 to which the tubes 1 are fixed are spaced at predetermined intervals. Then, the fuel laying sheet 100 is assembled. The user winds up the combined fuel laying sheet 100 into a roll and transports it to a desired location in a small boat or the like. The user spreads the fuel laying sheet 100 and lays it at a desired position, and fills the tube 1 with liquid fuel when necessary.

As described above, in Embodiment 1, the fuel laying sheet 100 is constructed by fixing the tube 1 to the net 2, which is a laying auxiliary member, with the cable tie 4, and connecting and combining a plurality of nets 2 with the carabiner 3. do. At this time, the net 2 slows down the speed at which the tubes 1 sink into the water, and allows the tubes 1 to sink while maintaining the spacing between the tubes 1 so as not to be washed away by the water. Therefore, the tubes 1 filled with liquid fuel can be arranged at uniform intervals underwater. Further, since the fuel laying sheet 100 can be constructed by connecting the net 2 and fixing the tubes 1 and combining the devices at the place of use, transportation can be easily performed. Further, the shape of the fuel laying sheet 100 can be set arbitrarily.

Furthermore, in the fuel laying sheet 100 of the first embodiment, the net 2 is made of resin such as PP, and therefore has high durability. Further, the net 2 is made to have a specific gravity of less than 1, for example, so that it floats on the water surface before the liquid fuel is filled into the tube 1, so that the fuel laying sheet 100 wound into a roll can be easily expanded. I can do it.

Furthermore, by forming a sheet in which the inner metal film part 12 is attached to the outer film part 11 into a cylindrical shape and connecting both ends with the center seal part 13, it is possible to obtain a tube 1 with high durability and storage stability. can. Here, durability can be improved by forming a plurality of layers of the outer film portion 11.

Embodiment 2.
FIG. 3 is a diagram showing the configuration of a fuel laying sheet according to the second embodiment. In FIG. 3, instruments and the like with the same reference numerals as in FIG. 1 perform the same functions as in the first embodiment. The fuel laying sheet 100 in Embodiment 2 is configured with a porous film 5 as a laying auxiliary member instead of the net 2. The porous film 5 is a film sheet with holes. Although not particularly limited, in the first embodiment, the material of the porous film 5 is PET (polyethylene terephthalate). Each porous film 5 according to the second embodiment has a width of less than about 1 [m]. Here, in FIG. 3, the porous films 5 having the tubes 1 are connected by two porous films 5, but the invention is not limited to this.

When the fuel laying sheet 100 connected with the porous film 5 as a laying auxiliary member is laid on the sea, if it is floating on the sea surface, it is likely to be washed away by the influence of ocean currents. Also, it is more flexible than net 2. Therefore, when the fuel laying sheet 100 is spread out on the water surface, it sinks into the water even if the tube 1 is not filled with liquid fuel, so that the tube 1 can be laid at the desired position more accurately. do. In addition, by laying the fuel laying sheet 100 before the fuel laying sheet 100 is bent and deformed, the intervals between the liquid fuels can be made uniform. Therefore, the porous film 5 in the second embodiment has a higher specific gravity than the net 2. Here, the specific gravity of the porous film 5 is set to be 1 or more. In addition, the holes should be spaced at equal intervals to ensure uniform settling into the water. However, here, it is assumed that the diameter of the hole is different between the part where the tube 1 is fixed and the part where the tube 1 is not fixed. For example, the hole diameter in the portion where the tube 1 is fixed is smaller than the hole diameter in the portion where the tube 1 is not fixed. This is because the width of the portion where the tube 1 is fixed is narrow, so if holes are formed with the same diameter as the portion where the tube 1 is not fixed, many portions without holes will remain and the porosity will be small. For example, the hole diameter of the portion where the tube 1 is not fixed is 30 [mm] in diameter, whereas the hole diameter of the portion where the tube 1 is fixed is 20 [mm] in diameter. Further, in the portion where the tube 1 is not fixed, small holes may be made between large holes to increase the opening area and further increase the porosity.

Further, the porous film 5 has hook-and-loop fasteners 5A attached along its length at both ends in the width direction and at the portion where the tube 1 is arranged. Therefore, in the second embodiment, the hook-and-loop fastener 5A of the porous film 5 serves as a connecting device for connecting the porous film 5 and a fixing device for fixing the tube 1. When installing the fuel laying sheet 100, the user can cover and sandwich the tube 1 with a film and fix it with the hook-and-loop fastener 5A serving as a fixing device. Therefore, the user can easily fix the tube 1 to the porous film 5 without using the binding band 4. However, the fixation of the tube 1 is not limited to the hook-and-loop fastener 5A. For example, if the tube 1 is attached to the porous film 5 in advance, there is no need to install the hook-and-loop fastener 5A for fixing the tube 1. Moreover, the installation of the hook-and-loop fastener 5A is not limited to both ends of the porous film 5 in the width direction. They can also be installed and connected at both ends in the length direction. Here, no holes are made in the area where the hook-and-loop fastener 5A is attached.

FIG. 4 is a diagram illustrating the connection of the porous film 5 in the fuel laying sheet according to the second embodiment. As shown in FIG. 4, in the fuel laying sheet 100 according to the second embodiment, the hook-and-loop fasteners 5A attached to both widthwise ends of the porous film 5 have an installation surface at one end and an installation surface at the other end. The surface is different. For example, if the hook-and-loop fastener 5A at one end is provided on the surface of the porous film 5, the hook-and-loop fastener 5A at the other end is provided on the back surface. Therefore, when connecting the porous films 5 in the width direction, at least the porous films 5 to which the tubes 1 are not fixed can be connected without worrying about the front and back surfaces of the porous films 5.

As described above, according to the fuel laying sheet 100 in the second embodiment, the porous film 5, which is a film sheet with holes, is used as a laying auxiliary member. Since the porous film 5 has a specific gravity of 1 or more, which is larger than the net 2, the fuel laying sheet 100 sinks into the water immediately after being stretched. Therefore, the fuel laying sheet 100 can be laid more accurately at a desired position and the liquid fuel can be placed uniformly before the sheet 100 is deformed due to large bending or is washed away by ocean currents or the like.

Further, the porous film 5 has hook-and-loop fasteners 5A at both ends in the width direction. Therefore, the porous films 5 can be easily connected. Further, the attachment surfaces of the hook-and-loop fastener 5A are made different between one end and the other end. Therefore, the porous film 5 can be connected without worrying about its front and back surfaces.

Embodiment 3.
In Embodiment 1 and the like described above, the tube 1 filled with liquid fuel has been described, but the type of substance to be filled into the tube 1 according to the present invention is not limited.

Example.
FIG. 5 is a diagram illustrating an example of the fuel laying sheet according to Embodiment 1 and Embodiment 2. The fuel laying sheet 100 of the example shows two types using the net 2 according to the first embodiment and an example using the porous film 5 according to the second embodiment.

The fuel laying sheet 100A and the fuel laying sheet 100B are made using a net 2 made of PP and having a specific gravity of 0.9 [g/cm ² ]. Moreover, the fuel laying sheet 100A and the fuel laying sheet 100B have dimensions of 10 [m] in length and 4.6 [m] in width by connecting the net 2 using the carabiner 3. The net 2 of the fuel laying sheet 100A has a porosity of 73.5% and a weight of 22.5kg. On the other hand, the net 2 of the fuel laying sheet 100B has a porosity of 82.6% and a weight of 11.5kg.

Further, the fuel laying sheet 100C is made of PET and a porous film 5 having a specific gravity of 1.38 [g/cm ² ]. The fuel laying sheet 100C has dimensions of 10 [m] in length and 4.5 [m] in width by connecting the porous films 5 with hook-and-loop fasteners 5A. The porous film 5 of the fuel laying sheet 100C has a porosity of 54.5% and a weight of 16.2kg.

1 Tube 2 Net 3 Carabiner 4 Binding band 5 Porous film 5A Hook-and-loop fastener 11 Outer film part 12 Inner metal film part 13 Center seal part 100, 100A, 100B, 100C Fuel laying sheet

Claims (12)

A cylindrical tube filled with liquid fuel,
a sheet-shaped laying auxiliary member that assists the tubes to move underwater and maintains the laying interval of the tubes;
a connecting device that connects the installation auxiliary member;
A fuel laying sheet comprising a fixing device for fixing the tube to the laying auxiliary member. The fuel laying sheet according to claim 1, wherein the laying auxiliary member is a resin net. 3. The fuel laying sheet according to claim 1, wherein the laying auxiliary member is made of a material that floats on the water surface before the tube is filled with the liquid fuel. The fuel laying sheet according to claim 1, wherein the laying auxiliary member is a film sheet with holes. The fuel laying sheet according to claim 4, wherein the laying auxiliary member has a hook-and-loop fastener at an end as the connecting device. 6. The fuel laying sheet according to claim 5, wherein the hook-and-loop fasteners installed at opposing ends of the installation auxiliary member are installed on different surfaces. The fuel laying sheet according to claim 2, wherein the fixing device is a cable tie. The fuel laying sheet according to claim 2, wherein the connecting device is a carabiner. The fuel laying sheet according to claim 4, wherein the connecting device is a carabiner. The tube is
a cylindrical outer film portion made of resin film;
3. The fuel laying sheet according to claim 1, further comprising an inner metal film part made of a metal film attached to the entire inner surface of the outer film part. 5. The fuel laying sheet according to claim 1, wherein the laying auxiliary member has a hook-and-loop fastener at an end as the connecting device. 12. The fuel laying sheet according to claim 11, wherein the hook-and-loop fasteners installed at opposing ends of the laying auxiliary member are installed on different surfaces.

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