JPS59199481A - Liquid storage vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Field of application of the invention] The present invention relates to a liquid storage container for storing liquid such as water.

[Background Art] A liquid storage container is constructed by connecting rectangular rigid unit panels that are water resistant and have a predetermined strength to each other with a flange provided around the panels to form a rectangular storage space. Common.

In such a liquid storage container, a sealing material is sandwiched between the flange portion around the unit panel and the flange portion of the adjacent middle panel to maintain water damage resistance.

However, the work of sandwiching the sealing material to ensure watertightness is complicated and requires careful attention.Due to the dimensional tolerances of the unit panels, water is likely to leak from the sealing material, and it is also difficult to maintain watertightness during vibrations such as earthquakes. This also causes the panels to move relative to each other, causing water to leak from the connecting portions.

[Object of the Invention] The present invention takes into account the following two facts and aims to obtain a liquid storage container that can maintain a high degree of watertightness for a long period of time.

[Summary of the Invention] The liquid storage container according to the present invention includes a flexible liquid-impermeable inner bag, support means for supporting the upper part of the inner bag, and vertical support means arranged around the inner bag at predetermined intervals. The inner bag is provided with a frame, and the inner bag forms an inner part and an outer head whose side circumference bends inward and outward before storing the liquid.This method reduces the reaction force against the support means after storing the liquid. However, the side periphery of the siliceous inner bag is expanded outward between the vertical frames after liquid storage to reduce the curvature of the outer periphery of the inner bag,
However, reducing the tensile stress is key to improving durability.

[Embodiment of the Invention] A first embodiment of the present invention is shown in FIG. The main part is composed of.

The vertical frame 14 is a plurality of supports erected from the installation surface 18 as shown in FIG. 12 and a lower horizontal frame 13, which are laterally connected to each other. these"
The two horizontal frames 12 and the lower horizontal frame 13 are planar or circular, and a cylindrical interior installation space is formed between these horizontal frames 12, 13 and the vertical frame 14. The lower horizontal frame 13 has the role of preventing the inner bag from falling over during one inflation.

As shown in FIG. 2, the inner bag 16 is a liquid-impermeable bag having a cylindrical shape, for example, and has a cylindrical liquid storage space formed therein. This inner bag 16 has a fiber layer (
It is a composite of a flexible rubber or synthetic resin layer and a flexible rubber or synthetic resin layer, and generally a woven fabric laminated with a synthetic resin sheet or a rubber sheet is used.

A plurality of hanging rings 20 are provided at appropriate intervals on the upper end of the side surface of the inner bag 16.
are fixed, and the upper horizontal frame 12 is inserted into these hanging rings 20.
It seems that it penetrates. Therefore, the hanging ring 20 and the upper horizontal frame 12 constitute a support means for supporting the upper end of the inner bag 16.

In addition, a liquid injection pipe 22 is provided on the top surface of the interior 16, and a liquid injection pipe 22 is provided on the side peripheral surface 1.
Liquid discharge pipes 24 are communicated near the ends. As shown by the two-dot chain line in FIG.
By wrapping it around the body, liquid discharge is prevented, and by stretching it as shown by the solid line in Figure 1, the liquid discharge is prevented.
Noh. A V-shaped zipper 26 is provided on the top surface of the inner bag 16, and by opening this zipper 26, a manhole can be formed through which a worker can enter the inner bag 16. ing.

Attachment of the hanging ring 20, pipes 22, 24, etc. to the inner bag 16 and connection of the side peripheral surface and the top and bottom surfaces of the inner bag 16 are performed by welding and machine stitching (the perforations are sealed with sealant).

One stage of fixation such as closed) is applicable.

Here, the inner bag 16 is as shown in FIG. 3(A)! Before fk storage, the upper dimension of the side peripheral portion is formed to be larger than the length from the J mounting surface 18 to the hanging ring 20.

As a result, the bottom surface comes into contact with the installation surface 18 before the liquid is stored, and an inner title portion 28 and an outer head portion 30 that are bent inward and outward are formed near the lower end of the side periphery. In particular, the vertical positional relationship between the inner head part 28 and the outer head part 30 is such that the inner head part 28 and the outer head part 30 are bent in the vertical order of these heads while maintaining the height order. The length, inner thickness, flexibility, etc. are selected so that they are arranged alternately one above the other in a zigzag pattern.

Next, the operation of this embodiment will be explained. When the liquid starts to be stored in the inner bag 16, as the liquid level rises as shown in FIGS. arise. Finally, when the liquid storage ends Y, the bent part of the inner bag 16 reaches the top as shown in Figure 3 (B), and the hanging ring 20 indirectly connects to the inner bag through the bent part. 16 will be supported. For this reason, the inner bag 16
When the liquid is stored, it stands on its own, so the weight of the liquid is not applied to the hanging ring 20, making it an unloaded state! It becomes 8-1.

However, as shown in Figure 4 (A), the inner bag 16 of the fjr
If the heights of the inner and outer heads 28 and 30 are not arranged sequentially and are reversed, as shown in Fig. The liquid remains in the lower part of the inner bag in state-1, and the liquid storage ends. As a result, all the load applied to the side peripheral surface of the inner bag is applied to the hanging ring 20.

The bent portion formed directly below the hanging ring 20 during liquid storage allows the inner bag 16 to have a degree of freedom in deformation even during vibrations such as earthquakes, and this allows the hanging ring 2
0 will not be subject to any significant burden.

Furthermore, as shown in FIG. 5(A), when there are no obstacles around the inner bag 16, the upper surface shape is circular with a radius H when liquid is injected. If it can be removed, the side peripheral surface of the inner bag 16 will be pushed outward between the vertical frames 14, as shown in FIG. 5(B), and its radius of curvature R will be greater than the radius of curvature R in FIG. 5(A). will also become smaller. Since the tensile stress (tension in the circumferential direction) generated in this inner bag is proportional to the radius, the configuration shown in Figure 5 (B) with a small radius of curvature does not have the vertical frame in Figure 5 (A). More important than structure: The force is smaller and the durability is improved.

Furthermore, as shown in FIGS. 5(C) and 5(D), if the vertical frames 14 are increased at equal intervals, the thickness of the inner bag 16 remains the same, that is, a large liquid storage space can be created without reinforcing the inner bag 16. Can be formed. This is the same even if the inner bag has a shape other than a cylinder, such as a prismatic shape.

In this way, in the liquid storage container io according to this embodiment, unlike the conventional structure in which rigid unit panels are connected, the flexible inner bag 1
6, there is no need for a sealant between the middle panels, and water damage can be reduced.

Next, FIGS. 6 and 7 show a second case applied when the liquid storage container 10 is placed on the installed chamber 8 inclined by an angle α.
6(A) and 6(B) show an example in which the vertical frame 14 is vertical even though the installation surface 18 (G) is inclined by an angle α from the horizontal surface (H). is set up. Therefore, when liquid is injected into the inner bag 16, the vertical frame 14 and the side peripheral surface of the inner bag 16 are perpendicular to each other, and wrinkles do not occur on the side surface of the inner bag.

However, in FIGS. 7(A), (B), and FIG. 8, when the vertical frame 14 is installed perpendicularly to the inclined installation surface 18, the vertical frame 14 placed below the slope of the installation surface 18 Frame 14A
The inner bag side circumferential surface in contact with this is inclined by an angle θ (-α), and the liquid weight W is on the inner bag side circumferential surface at this part.
(c, osα) times the force T acts on the horizontal wrinkles 32
to occur. These wrinkles 32 grow over time and become upper sag 32A and fi 32B due to liquid injection. As time passes, w132B grows and L part sag 3
2A becomes smaller.

If the installation surface inclination angle α is small, wrinkles 32B will be formed depending on the degree.
A growth limit has been set, and no further growth will occur. If the angle α is larger than a certain level, the upper part will sag 3
The wrinkle 32B grows until the wrinkle 2A disappears, and as a result, the suspension ring 2
A load acts on the 0, making it necessary to reinforce the hanging rings and frame members.

Therefore, in this embodiment, the vertical frame 1 is placed below the inclined installation surface.
The growth of wrinkles can be suppressed by tilting 4A from a vertical line in a direction perpendicular to the installation surface by an angle θ smaller than the installation surface inclination angle α.

Next, FIG. 10 shows a third embodiment of the present invention,
A support post 36 is provided at the center of the interior of the inner bag 16. The lower end of this support 36 is in contact with the bag 16 via a displacement prevention device 38 placed on the side surface of the inner bag 16, and one end is placed inside the inner bag 16 via a displacement prevention device 40 located at -. It is in contact with the inside of the top surface of the bag.

These displacement prevention devices are welded to the inner circumference of the inner bag.

This support column 36 has a flow slope on the top surface of the inner bag 16 to prevent rainwater from accumulating and increasing the load on the hanging ring 20 when installed outdoors.

A large number of these supports can be installed in a large inner bag. Even when the internal space is in a rectangular tube shape other than a cylindrical shape, the support column can be attached with σf capability.

The other configurations of this embodiment are similar to those of each of the embodiments described above, and similar effects can be obtained.

[Effects of the Invention] As explained above, in the liquid storage container according to the present invention, a flexible inner bag is arranged between a plurality of vertical frames, and the inner bag has an inner title part and an outer head that are bent inward and outward at the side circumference. Since a section is provided, there is no need for a sealing member when connecting conventional rigid unit panels, and a high degree of watertightness can be maintained for a long period of time.

[Brief explanation of the drawing]

Fig. 1 is a trunk view showing a liquid storage container according to a first embodiment of the present invention, Fig. 2 is a perspective view showing the inner bag of Fig. 1, and Fig. 3 shows a state in which liquid is injected into the inner bag. 41 is a cross-sectional view showing an inappropriate state of the bent portion, and FIG. Figure 7 is a cross-sectional view showing the inquiry form on an inclined installation surface, Figure 8.
The drawings are a partially enlarged view of FIG. 7, FIG. 9 is a side view of FIG. 8, and FIG. 10 is a sectional view showing a third embodiment of the present invention. 10...Liquid storage container, 12...Upper horizontal frame, 14...
- Vertical frame, 16... ψ inner bag, ]8... Installation surface, 20... Hanging ring, 28... Inner title section,
30... External head, 32nd - wrinkles. Agent Patent Attorney Atsushi Nakajima

Claims (2)

[Claims] (1) A liquid-impermeable inner bag having a composite layer of a fiber layer that prevents stretching and a flexible rubber or synthetic resin layer, support means that supports the upper part of the inner bag, and a support means that supports the upper part of the inner bag, and a Vertical frames are provided that are erected at predetermined intervals and contact the outer periphery of the inner bag that expands after liquid storage to reduce the curvature of the outer periphery of the inner bag. A liquid storage container characterized in that the container is dimensioned to form an inner head and an outer head that are bent. (2) A plurality of vertical frames are set up from the installation surface at predetermined intervals, and these vertical bars form an installation space, and a flexible liquid-impermeable inner bag is placed in this installation space to fill the interior. When the bag is inflated, it can be expanded from between the vertical frames, and the inner bag supports the upper part and bends inward and outward with the vertical direction of the side circumference before liquid storage being larger than the length from the installation surface to the upper support part. Among the plurality of vertical frames, the vertical frame placed below the inclined shoulder installation surface has an inclination angle in the direction perpendicular to the installation surface from the vertical line that is greater than the inclination angle of the installation surface. A liquid storage container characterized by being made smaller.