JPH0680696U - Oil barrier - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an oil barrier that can be installed in an existing large oil storage tank and can be installed without performing work such as lifting the oil storage tank. [Structure] The bank 14 is arranged so as to surround the oil storage tank 10. The inner bottom portion 28 is made of concrete, includes the lower end portion of the bank 14, and forms an inner bottom surface of the space 30 surrounded by the bank 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil levee, and more particularly to an oil levee that is formed to surround an oil storage tank and prevents oil leaking from the oil storage tank.

[0002]

[Prior art]

 Oil storage tanks that store large amounts of oil are provided with oil barriers to prevent the leaked oil from flowing out and spreading when oil leaks from the oil storage tank due to an accident or the like. Usually, in the case of a particularly large oil storage tank, the dike is formed in a box shape with an open upper surface in advance by installing concrete before the oil storage tank is installed. After the oil barrier is completed, an oil storage tank will be installed inside the oil barrier. Further, in the case of a small oil storage tank, an oil barrier can be provided as in the case of a large oil storage tank, and an oil barrier installed in an existing oil storage tank is also known. This oil levee is formed in a box shape with the top open beforehand.After transporting to the installation site, the existing oil storage tank is lifted by a crane, etc., and the oil levee is installed between them, and the oil levee is installed inside the oil levee. The oil storage tank is lowered and fixed.

[0003]

[Problems to be solved by the device]

 However, the above-mentioned conventional oil barrier has the following problems. In the case of a dike installed in a large oil storage tank, it is necessary to complete the dike before installing the oil storage tank, and there is a problem that the existing oil storage tank cannot handle it. Also, in the case of an oil storage tank that is suitable for a small oil storage tank and is formed in a box shape with an open upper surface in advance, an existing oil storage tank can be used, but installation of an oil barrier and oil protection of the oil storage tank At the time of fixing to the bank, it is indispensable to lift the oil storage tank and the like. Therefore, there is a problem that equipment and machinery for that purpose are required and dangerous work is required. Therefore, the present invention is characterized in that it can be installed in an existing large-sized oil storage tank and that it can be installed without performing work such as lifting the oil storage tank.

[0004]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention has the following configuration. That is, it is provided with a bank which is arranged so as to surround the oil storage tank, and an inner bottom made of concrete which includes the lower end of the bank and forms the inner bottom of the space surrounded by the bank. It is characterized by doing. Further, the bank may be formed by connecting a plurality of plate bodies, and a sealing means may be inserted at a connecting portion between the plate bodies.

[0005]

[Action]

 The operation will be described. The oil storage tank is surrounded by the bank, and the inner bottom of the space surrounded by the bank is formed by the inner bottom made of concrete.Therefore, the existing oil storage tank is surrounded by the bank and the concrete is surrounded by the bank. An oil levee can be formed by pouring into the lower part of the space surrounded by and solidifying.

[0006]

【Example】

 Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of an oil dam of the present embodiment surrounding an existing oil storage tank, and FIG. 2 is a partial perspective view showing the structure of a dam plate. In the figure, 10 is an oil storage tank that can store a large amount of oil inside.

Reference numeral 14 denotes a bank, which is composed of four metal plates 16 a, 16 b, 16 c and 16 d connected to each other, and is arranged so as to surround the oil storage tank 10. The plate bodies 16a and 16b arranged so as to face each other are formed in the same shape. The plate 16a (same for the plate 16b) is provided with through holes 18a in the up-down direction on both side edges as clearly shown in FIG. On the other hand, the plate bodies 16c and 16d arranged so as to face each other are formed in the same shape. Side plates 20 are fixed to both side edges of the plate body 16c (the same applies to the plate body 16d) as shown in FIG. A through hole 18b is formed in the both side plate portions 20 in the vertical direction.

When the side edges of the plate bodies 16a, 16b, 16c and 16d are connected to form the bank 14, the through holes 18a of the plate bodies 16a and 16b and the through holes 18 of the plate bodies 16c and 16d. By making the bolts b correspond to each other and inserting and fixing the bolts 22 as an example of the connecting means, the rectangular tubular bank 14 is formed by the four plate bodies 16a, 16b, 16c and 16d. In addition, a filler (for example, a synthetic resin caulking agent), which is an example of a sealing means, is filled between the side edges of the plate bodies 16a, 16b, 16c, and 16d which are connected to each other to achieve watertightness. . Reference numeral 24 denotes a metal base portion, which is inserted and fixed between the lower edge of each plate 16a, 16b, 16c, 16d and the ground 26 (note that in FIG. 2, it corresponds to the plate 16a. (Only the base part 24 is shown). Each of the plate bodies 16a, 16b, 16c, 16d is provided with two base portions 24, which are spaced apart from each other.

Reference numeral 28 denotes an inner bottom portion, which is made of concrete. The inner bottom portion 28 encloses the lower end portion of the bank 14 and forms the inner bottom surface of the internal space 30 surrounded by the bank 14. The upper surface of the inner bottom portion 28 is formed as an inclined surface that is partially lowered. Reference numeral 32 denotes a drain flow path, which is formed by embedding a pipe in the inner bottom portion 28. The upper end of the drain flow path 32 is the upper surface of the inner bottom portion 28 and opens at the lowest portion. The other end of the drain flow path 32 extends outside the inner bottom portion 28 and is open. Liquids such as leaked oil and rainwater accumulated on the upper surface of the inner bottom portion 28 can be led out of the oil barrier 12 through the drain passage 32. Reference numeral 34 is a valve which is an example of an opening / closing means, and opens / closes the drain flow path 32. Normally, the valve 34 is closed to prevent the leaked oil and rainwater accumulated in the oil barrier 12 from flowing out of the oil barrier 12. On the other hand, the valve 34 is opened when the leaked oil or rainwater accumulated in the oil dike 12 is discharged, and the leaked oil or rainwater accumulated through the drain passage 32 is led out of the oil dike 12. It can be processed.

Next, an example of a method of installing the oil barrier 12 of this embodiment will be described. First, the base portion 24 is fixed to each plate 16a, 16b, 16c, 16d by an appropriate means such as a bolt. After fixing the base portion 24 to each of the plate bodies 16a, 16b, 16c, 16d, the plate bodies 16a, 16b, 16c, 16d are erected in four directions on the four sides of the oil storage tank 10 to form a rectangular cylinder, and the oil storage tank 10 is surrounded. To do. Next, adjacent side edge portions of the plate bodies 16a, 16b, 16c, 16d are connected by bolts 22, and a filler is injected into each connection portion to form the bank 14. After that, a concrete formwork (not shown) for forming the inner bottom portion 28 is provided around the bank 14, and a pipe serving as the drain flow path 32 is arranged at a predetermined position. When the concrete formwork and the pipe to be the drain flow path 32 are arranged, concrete is placed in the concrete formwork. By this concrete pouring, the legs 36 of the oil storage tank 10, the lower ends of the plates 16a, 16b, 16c, 16d including the base 24, and the pipe to be the drain flow path 32 are embedded and embedded in the inner bottom portion 28. be able to. At this time, since the plurality of base portions 24 are arranged apart from each other, the concrete can flow between them.

Before the concrete forming the inner bottom portion 28 solidifies, the upper surface of the inner bottom portion 28 is inclined as described above, and the portion where the upper end of the drain channel 32 is opened is set to the minimum height. When the concrete forming the inner bottom portion 28 is solidified, the concrete form is removed, and the oil barrier 12 shown in FIG. 1 is completed. The installation method shown in this embodiment is an example, and the steps and the number of steps can be set arbitrarily.

In the oil barrier 12 of the present embodiment, the oil storage tank 10 is surrounded by a bank 14, and an inner bottom portion 28 forming an inner bottom surface of a space 30 surrounded by the bank 14 is formed by concrete casting. Therefore, the oil barrier 12 can be formed without performing work such as lifting the existing oil storage tank 10. Further, since the bank 14 is formed by connecting a plurality of plate bodies 16a, 16b, 16c, 16d, the oil dam 12 having an arbitrary shape and size can be assembled on site. Even if the bank 14 is formed of a plurality of plates 16a, 16b, 16c, 16d, the sealing means is inserted at the connecting portion between the plates 16a, 16b, 16c, 16d, so that the protection is prevented. Leaked oil and rainwater in the oil dike 12 will not leak out of the oil dike 12 from the connection part. Further, since the drain passage 32 is provided and can be opened / closed by the valve 34, the leaked oil and rainwater accumulated in the oil dam 12 can be discharged to the outside of the oil dam 12 for processing. Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and many modifications can be made without departing from the spirit of the invention. is there.

[0013]

[Effect of device]

 When the oil dam according to the present invention is used, the oil storage tank is surrounded by the dam, and the inner bottom of the space surrounded by the dam is formed by the inner bottom made of concrete. It is possible to form an oil barrier by surrounding it with a plate and pouring concrete into the lower part of the space surrounded by the bank to solidify. Therefore, it can be installed in an existing large oil storage tank, and at that time it can be installed without performing operations such as lifting the oil storage tank, resulting in a reduction in installation costs, work safety, etc. Play.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of an oil barrier according to the present invention.

FIG. 2 is a partial perspective view of the bank of the embodiment.

[Explanation of Codes] 10 Oil Storage Tank 12 Oil Levee 14 Dike 16a, 16b, 16c, 16d Plate 18a, 18b Through Hole 20 Side Plate 22 Bolt 24 Base 26 Ground 28 Inner Bottom 30 Inner Space 32 Drain Channel 34 Valve 36 Leg

Claims (2)

[Scope of utility model registration request] 1. A levee plate arranged so as to surround an oil storage tank, and a concrete inner bottom part that encloses a lower end portion of the levee plate and forms an inner bottom face of a space surrounded by the levee plate. An oil barrier that is equipped with. 2. The oil proof according to claim 1, wherein the bank is formed by connecting a plurality of plate bodies, and a sealing means is inserted at a connecting portion between the plate bodies. Bank.