JPS61257525A - Floating oil-preventive dam device - Google Patents

Abstract

PURPOSE:To prevent the incapability of vertical movement of a frame part due to flexion of oil-preventive films by a method in which a frame part is attached in a vertically movable manner along the guide of a restraining part, and the end of a soft oil-proof film is attached in a relatively rocking manner to the opening curved face of the frame part. CONSTITUTION:A guider 13 is fixed to a fixed column 11 erected from the seabed, and a frame part 18 is provided in a vertically movable manner through rollers 14 and 15 to the inside of the angular groove of the guider 13. A lip seal 11 is attached to the fixed column side of the frame part 18, and one end of a soft oil-proof film 12 is inserted into and supported on the curved face 18a of the opening of the frame part 18. Even when the film 12 is flexed by pressures of water, the flexion is absorbed by the curved face 18a without acting on the frame part 18. The frame part 18 can thus be vertically moved along the guider 13 smoothly all the time in comply with variations of tidal levels.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a floating oil embankment device installed around an offshore oil storage tank in case of an oil leak accident.

[Conventional technology]

When an oil storage tank is installed on the sea, a floating oil embankment device is conventionally installed around the tank in case of an oil leakage accident. As shown in Figure MS8, such a floating oil embankment device consists of a fixed column 1, a floating body 2 as the body of the oil embankment, and an id g3 that connects the fixed column and the floating body. being developed.

By the way, in the above-mentioned floating oil embankment device, the floating body 2 repeatedly moves in three-dimensional directions due to changes in the tide level and the influence of wind and waves. It has to fulfill the role of locking the floating body 2 while allowing the vertical movement of the floating body 2. Further, it is also necessary to provide a sealing mechanism between the 141 portion 3 and the floating body 2 to prevent oil leakage.

Therefore, in the above-mentioned floating oil embankment device, the floating body 2 is guided by the 141 section 3 and moved in the vertical direction as follows. That is, 14 fixed to the fixed column 1
Part 1 3 has a U-shaped horizontal cross section,
The end of the floating body 2 is inserted into the square groove of the 141 section 3 formed in this way. Further, at both ends of the floating body 2, vertical rollers 4 are provided on the end surface 4a thereof, and horizontal rollers 5 are provided on the side surface 5a, respectively. The floating body 2 is guided in the vertical direction by the guide portion 3 so as to roll on the inner surface of the floating body 2 .

In addition, flexible rubber glue tab seals 6 are attached to the end faces 5a of both ends of the floating body 2 while being pressed with sufficient pressure against the inner surface of the guide part 3, so that the guide part 3 and the floating body 2 are This prevents oil from leaking between the parts.

[Problem that the invention seeks to solve]

However, in the floating oil embankment device as described above, the floating body 2
If the horizontal roller 5 bends as shown by the two-dot chain line in FIG. 8 due to water pressure, not only will the horizontal roller 5 come into partial contact with the inner surface of the guide portion 3, making it difficult to rotate, but also the lip seal 6 will bend against the guide portion 3. may separate from the inner surface of the id part 3 and the floating body 2.
There is a problem that the liquid tightness between the two is reduced.

If an attempt is made to form the floating body 2 to have a structure with little deflection, the floating body 2 will have a heavy structure rather than a light structure, and will be useless as a floating body.

Furthermore, as the floating body 2 moves in the vertical direction, the lip seal 6 slides on the inner surface of the guide part 3, but at this time, due to the influence of oscillation due to the deflection of the floating body 2, the lip seal 6 does not maintain sufficient liquid tightness. Another problem is that it is difficult to maintain.

The present invention attempts to solve the above-mentioned problems by locking the floating body in a fixed position without allowing the floating body to move up and down as the main body of the oil barrier, and moreover, reliably preventing oil leakage. The purpose is to provide a floating oil embankment device that can

[Means for solving problems]

Therefore, the floating oil embankment device of the present invention includes a frame member that is guided up and down along the 141 part of the restraint member via rollers, and a floating body as the oil embankment body whose end portion is fitted into the frame member. and allow relative rocking between the frame member and the floating body (
A curved surface is formed on the inner periphery of the frame member, and a flexible oil-proof film connecting the frame member and the floating body allows the frame member to move up and down between the restraining member and the frame member. It is characterized by being provided with a lip seal that seals the device while the device is in use.

[Effect]

In the above-described floating oil embankment device of the present invention, the frame member is guided up and down along the guide of the restraining member via the rollers, thereby allowing the floating body to move up and down, and a curved surface is formed on the inner periphery of the frame member. This allows relative rocking between the frame member and the floating body. The flexible oil-proof film prevents oil from leaking between the frame member and the floating body, and the lip seal prevents oil from leaking between the restraining member and the frame member.

〔Example〕

Hereinafter, a floating oil embankment device as an embodiment of the present invention will be explained with reference to the drawings. FIG. 1 is a horizontal cross-sectional view showing in detail the frame member guided in the 141 part thereof, and FIG. 2 is the same as that of FIG. ■-■ Cross-sectional view in the direction of arrows, Figure 3 is a plan view of the floating oil embankment device, Figure 4 is its front view, Figure 5 is a front view of the frame member, Figure 6 is the ■-■ of Figure 5. FIG. 7 is a side sectional view of the frame member.

As shown in FIGS. 3 and 4, a floating oil embankment device as an embodiment of the present invention includes a fixed column 11 as a restraining member fixed to the seabed, and a floating body 12 as an oil embankment body. , a 141 section 13 is fixed to the fixed column 11. As shown in FIG. 1.2.5, this 141 portion 13 is formed with a square groove whose horizontal cross section is U-shaped.

A frame member 18 is disposed in the square groove of the guide portion 13 and is guided vertically along the same square groove. A roller 14 and a horizontal roller 15 having a rotation axis parallel to the longitudinal direction of the floating body 12 are attached so as to come into contact with the inner surface of the 141 section 13 .

Further, the frame member 18 is formed with an opening penetrating in the left-right direction shown in FIG. 5, and the inner periphery of the frame member 18 is formed with curved surfaces 18a on all side surfaces.

In this way, the inner peripheral side surface becomes a curved surface 18a.
An end portion of the floating body 12 is fitted into and supported by a frame member 18 formed as a frame member 18 .

Furthermore, as shown in FIG. 1, between the frame member 18 and the floating body 12, a flexible oil-proofing material 1i17 made of a material with high elasticity and flexibility is arranged at the entire height of the floating body 12. In addition, the frame member 18 is made of a material with high flexibility and elasticity, such as rubber, and a tongue seal 16 is pressed against the inner surface of the square groove of the side part 13 with sufficient pressure. It can be installed in the same condition.

fth, v&4 Figure 1: Oite H, W, L! ! The high tide level, L, and WL indicate the low tide level, and the id part 13 is
The floating body 12 has a length in the vertical direction sufficient to move following the fluctuations in the tide level between the high tide level and the low tide level.

The floating land device as an embodiment of the present invention is configured as described above, so that the floating body 12 is protected against fluctuations in tide level, wind, waves, etc.
When subjected to a force in the vertical direction due to a tidal current or the like, the floating body 12 is guided in the vertical direction along the square groove of the side portion 13 via the frame member 18 and moves. At this time, the frame member 18 is guided in the vertical direction along the square groove of the side part 13 so that the vertical rollers 14 and the horizontal rollers 15 roll on the inner surface of the square groove.

Furthermore, the lip seal 16 moves together with the frame member 18 while coming into contact with the inner surface of the 141 part 13, thereby preventing oil or seawater from passing between the frame member 18 and the inner surface of the square groove of the side part 13. Ru.

Furthermore, as shown by the two-dot chain line in FIG. 1.2, when the floating body 12 bends laterally or vertically due to the force of wind, waves, or currents, its ends tend to tilt with respect to the frame member 18. However, since the inner peripheral side surface of the frame member 18 is formed as a curved surface 18a, the floating body 12 slopes smoothly.

Further, at this time, even if the floating body 12 makes various movements relative to the frame member 18, the flexible oil-proof film 17 prevents dark oil or seawater from passing between the frame member 18 and the floating body 12.

Therefore, in the above-described floating land device as an embodiment of the present invention, even if the floating body 12 is bent laterally or vertically and its end portion is inclined with respect to the frame member 18, the frame member 18
is not inclined with respect to the side portion 13, so the vertical roller 14
The frame member 18 is smoothly guided in the vertical direction along the square groove without causing uneven contact between the horizontal rollers 15 and the inner surface of the square groove of the side portion 13.

Further, since the floating body 12 is allowed to have a relatively large deflection, the floating body 12 can be formed to have a light structure, and the weight of the floating body 12 can be reduced.

Furthermore, the lip seal 16 is not affected by the oscillation caused by the deflection of the floating body 12, and slides smoothly and orderly on the inner surface of the rectangular groove of the id portion 13, so that oil leakage in the above-mentioned floating land device is ensured. is prevented.

〔Effect of the invention〕

As detailed above, according to the floating land device of the present invention,
A frame member that is guided up and down via rollers along the id portion of the restraint member, and a floating body serving as an oil barrier main body whose end portion is fitted into the frame member, and the above-mentioned frame member and floating body are provided. A curved surface is formed on the inner periphery of the frame member to allow relative rocking of the frame member, and a flexible oil-proof film connects the frame member and the floating body, and a space between the restraining member and the frame member. This simple structure is provided with a lip seal that seals the frame while allowing the frame member to move up and down, and prevents the floating body from being held in a fixed position by transmitting vibrations due to deflection of the floating body as the main body of the oil barrier to the frame member. will be stopped.

In addition, not only is oil leakage reliably prevented despite the movement of the floating body due to lifting and bending, it is also possible to further reduce the weight of the floating body, and the labor and cost required to manufacture the above-mentioned floating ground equipment can be significantly reduced. It will be reduced.

[Brief explanation of drawings]

Figures 1 to 7 show a floating land device as an embodiment of the present invention. Figure 1 is a horizontal sectional view showing details of the frame member guided by the side part, and Figure 2 is a ■- in Figure 1
■A sectional view in the direction of the arrows, Fig. 3 is a plan view of the floating ground device, Fig. 4 is its front view, Fig. 5 is a front view of the frame member, and Fig. 6 is a view in the direction of the ■-■ arrows in Fig. 5. 7 is a side sectional view of the frame member, and FIG. 8 is a horizontal sectional view showing a conventional floating ground device. 11...Fixed column, 12...Floating body, 13...Id g, i
4,1s--roller, 16... lip seal, 17...
Flexible oil-proof film, 18...Frame member, 18a...Curved surface. Sub-Agent Patent Attorney Yoshihiko Iinuma J1!2 Figure 3 Figure 4 Figure 5 Figure 7rlII Figure 6 Figure 8

Claims (1)

[Claims] A frame member that is guided vertically via rollers along the guide portion of the restraint member, and a floating body serving as an oil barrier main body whose end portion is fitted into the frame member, and the above-mentioned frame member and floating body are connected to each other. A curved surface is formed on the inner periphery of the frame member to allow relative rocking, and a flexible oil-proof film connects the frame member and the floating body, and a flexible oil-proof film is formed between the restraining member and the frame member. A floating oil embankment device, characterized in that it is provided with a lip seal that seals off while allowing the frame member to move up and down.