JPH0322346Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a liquid-tight structure such as an oil fence that prevents the spread of spilled oil.

(Conventional technology) Structures that require liquid tightness, such as offshore oil barriers,
As shown in Figs. 10 and 11, a plurality of steel floats a are floated on the sea surface b at intervals, and a corrugated metal film c is formed between adjacent floats a so as to extend above and below the sea surface b. is interposed to connect the edge c' of the metal film c to the float a.

At this time, each dimension is determined according to the expected amount of spilled oil so that oil does not move from one side A of the metal film c of the shielding part to the other side B.

Therefore, the metal film c is expensive from the viewpoint of corrosion resistance and antifouling, and its weight is supported by the fishing rod e using the fishing gear d.

(Problems to be Solved by the Invention) As described above, in the conventional structure, an expensive metal film is used, and the fishing tackle and fishing rod become redundant parts.

(Means for solving the problem) The present invention was proposed to solve the above problem, and consists of floating pipes arranged in series with a gap between them, and the same floating bodies adjacent to each other. A liquid characterized by comprising a shield made of a flexible membrane disposed between each floating body, and a chain or cable shorter than the shield that connects the upper and lower parts of the adjacent floating bodies, respectively. This relates to dense structures.

(Function) and (Effects of the invention) As mentioned above, in the present invention, when arranging the shielding bodies made of flexible membranes underwater, the shielding bodies are arranged in series with a space between them. Since the shield is placed between the pipe floating bodies, the floating body prevents the shield from sagging or facing parallel to the water surface, and prevents the shield from going below the water surface. The sinking of the shield is prevented, and the liquid-tightness of the shield is maintained.

In this way, the shape of the shield is held by the floating body and buoyancy is imparted to the shield, so that there is no need for extra fishing gear or fishing rods as in the prior art.

Furthermore, since the shielding body is made of a flexible film, the structure is simpler and the cost is lower than when the shielding body is made of a metal body.

Furthermore, since the floating body is made of pipe, it is lightweight and has a simple structure, and can fully exhibit its effects as a floating body.

In addition, since the adjacent floating bodies are connected by a chain or cable, and the chain or cable is configured to be shorter than the length of the flexible shield between the floating bodies, rolling or pitching of the floating body due to waves may occur. The chain or cable serves as a reinforcing member when towing the liquid-tight structure, and also prevents tension from being applied to the shield during waves, thereby preventing damage to the shield. Furthermore, since the chains or cables connect the upper and lower parts of the adjacent floating bodies,
Both adjacent floating bodies are maintained at substantially equal intervals vertically to maintain the shape of the shield.

(Example) The illustrated example in which the present invention is applied to an oil fence will be described below.

1 is a floating body composed of metal or plastic pipes arranged in series with a gap between them between opposing steel floats 2, 2, floating perpendicularly to the sea surface 3, with closed ends at the top and bottom ends. The pipe is covered to prevent seawater from entering the pipe.

4 is a shielding body made of a flexible film having corrosion resistance and antifouling properties and made of a fluororesin cloth reinforced with glass fibers arranged between the floats 2, 2;
The shield 4 is fixed to the floating body 1 by wrapping it around the floating body 1 and fixing the shield 4 to the floating body 1 by fixing a small piece of cloth 5 with an adhesive or the like as a backing for the wrapped portion of the shield 4 . Further, in order to prevent the floating body 1 from being pulled out, the shielding body 4 is held onto the floating body 1 by a clip 6 made of metal or the like.

Furthermore, chains or cables 7 are connected between the upper and lower ends of the adjacent floating bodies 1, and the length L of the shield 4 between the floating bodies 1 is made longer than the length l of the chains or cables 7. are doing.

Note that the floating body 1 does not necessarily have to be hollow, and may be constructed of a pipe or the like filled with a foamed plastic material having buoyancy.

In the illustrated embodiment, as described above, the float 2,
Instead of the conventional metal film, the shielding body disposed between the shielding body 4 is made of a flexible membrane such as watertight glass fiber reinforced fluororesin cloth that has anti-corrosion and antifouling properties. By fixing the body 4 to the floating bodies 1 arranged upright and floating perpendicularly to the sea surface 3, the shield 4 is reinforced and given buoyancy, and the shield 4 is
This prevents the water from sinking below the water surface, thereby eliminating the need for conventional suspension devices for shielding objects such as fishing gear, fishing rods, etc.

Furthermore, since a chain or cable 7 shorter than the length of the shield 4 between the floating bodies 1, 1 is connected between the upper and lower ends of the adjacent floating bodies 1, 1, excessive tension is applied to the shield 4. There is no need to worry about it being added.

7 to 9 show another embodiment of the present invention, in which the intermediate portions of adjacent floating bodies 1, 1 in the vertical direction are connected by a plurality of cables 7'.

According to the illustrated embodiment, the floating body 1 has a span equal to the vertical distance l' between the cables 7', 7' supported by the attachment parts of the cables 7', 7' against the lateral pressure P caused by waves, currents, etc. Compared to the case where the cables 7, 7 are attached to the upper and lower ends of the floating body 1 as in the previous embodiment, the span of the beam is significantly reduced, and the force that the floating body 1 receives is reduced.

In order to prevent the shield 4 from being abraded by the cable 7', the cable 7' is made of a strong metal wire 7'a made of heat-shrinkable material, etc., as shown in FIG. It is constructed by being covered with soft rubber 7'b that is easy to wear.

[Brief explanation of the drawing]

FIG. 1 is a front view showing one embodiment of a liquid-tight structure according to the present invention, and FIGS. 2, 3, 4, 5, and 6 are views taken along the arrows in FIG. 1, respectively. , arrow view -
Figures, Views - Figures, Views - Figures and Views -
7 is a front view showing another embodiment of the liquid-tight structure according to the present invention, and FIG. 8 is a view taken from the arrow in FIG. 7.
9 is a cross-sectional view of the cable, FIG. 10 is a front view of a conventional liquid-tight structure, and FIG.
Figure XI. 1... Floating body, 4... Shielding body, 7... Chain or cable, 7'... Cable.

Claims (1)

[Scope of utility model registration request] Floating bodies made of pipes arranged in series with an interval between them, a shield made of a flexible membrane arranged between the adjacent floating bodies, and a space between the upper and lower parts of the adjacent floating bodies. A liquid-tight structure characterized by comprising a chain or cable shorter than the shields connecting the shields.