JPH0868081A - Partition plate for prefabricated storage tank - Google Patents

Abstract

(57) [Summary] [Purpose] Maintain sufficient strength to withstand water pressure even when one of the partitioned adjacent liquid storage tanks is in the liquid storage state and the other is empty. Provided is a partition plate for an assembly-type liquid storage tank capable of maintaining the amount of stored liquid in a substantially equal amount state. [Structure] A flange 2 having an appropriate width whose peripheral edge is bent at a right angle to the plate surface is formed, and a plate surface inside the flange 2 is formed as a flat surface 3 with a slight width, and the entire plate surface inside is formed in a vertical direction. Is a wavy shape with continuous unevenness, and in the left-right direction any concave surface portion 4 is gradually concave toward the center, and any convex surface portion 5 is formed as a curved uneven surface gradually convex toward the center. Then, the partition plate 1 was used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition plate used in a prefabricated liquid storage tank installed on, for example, a rooftop of a building.

[0002]

2. Description of the Related Art An assembly type liquid storage tank is partitioned into two or more chambers so that liquid supply can be continued even during cleaning, and liquid shake due to an earthquake or the like can be minimized and water pressure on a wall surface can be reduced. It is usually composed of This partition is
Conventionally, the plate surface is a flat plate and a fixing flange is formed on the peripheral edge, or the plate surface is a convex plate curved in one direction and a flange is formed on the peripheral edge is used. .

[0003]

However, when the former flat plate is used, there is an advantage that the water volumes in both of the partitioned storage tank parts are equal regardless of the water level, but the liquid supply is continued. Therefore, if only the adjacent liquid storage tanks are emptied for cleaning etc. while the liquid is stored in one liquid storage tank, the pressure resistance of the flat plate against water pressure is relatively small and the partition plate may be damaged. Therefore, there is a problem that the empty state or the repetition of the empty state for a long time must be avoided as much as possible, and in order to solve this, the plate thickness must be considerably increased.

On the other hand, when the latter bulging plate is used, there is an advantage that the pressure resistance against the water pressure in the bulging direction is greater than that of the flat plate, but the pressure resistance in the opposite direction is the pressure resistance in the bulging direction. Since the strength of the partition plate is only about 2/3 of that of the liquid, the partition plate bulges outward from the tank while the liquid is stored in the liquid tank part on the side where the partition plate swells inside the tank. When the liquid storage tank part is emptied, there is a problem that it becomes weaker than the flat partition plate, and the water volume of both partitioned liquid storage tank parts is not equal at the same water level. was there.

The present invention has been made in view of the above-mentioned problems, and has strength enough to withstand water pressure even if one of the partitioned adjacent liquid storage tank portions is in a liquid storage state and the other is empty. It is an object of the present invention to provide a partition plate for an assembly-type liquid storage tank, which can maintain the liquid storage amount in the same water level state of both liquid storage tank portions while maintaining the same.

[0006]

DISCLOSURE OF THE INVENTION The present invention for solving the above-mentioned problems is a partition plate for an assembly-type liquid storage tank that divides the assembly-type liquid storage tank into two or more parts, and at least a lower portion of a wall surface of the partition plate is on both sides. It is characterized in that it is formed as a corrugated surface that is uneven and corrugated.

It is preferable that the uneven surface is formed as a vertical corrugation. The corrugations are continuously formed at an appropriate pitch. A flange may be formed on the peripheral edge, and the uneven surface may be formed over the entire plate surface in this flange, but a flat surface part with a slight width is formed inside the flange and is formed on the plate surface inside. Is preferred.

Considering that the corrugated surface continuously forms an uneven surface having the same shape over the entire upper and lower surfaces of the plate surface, and that the lower part of the liquid storage tank has a larger hydraulic load than the upper part, the plate surface The uneven pitch of the upper part can be made large and the uneven pitch of the lower part can be made small, or the unevenness of the upper part of the plate surface can be made small and the lower part can be made larger, or The upper part of the can be a substantially flat surface, the lower part can be an uneven surface, and can be formed as a combination thereof.

In any of the above cases, it is preferable that the degree of unevenness is set within the overhanging dimension of the flange from the flat surface position inside the flange. In addition, in either case, the plate surface may have the same thickness as a whole, but it can be formed such that the upper part is thin and the lower part where a higher water pressure is applied is gradually thicker. The upper portion may be made thinner by an amount that can improve the strength of the entire plate surface due to the uneven surface.

[0010]

Operation Even if the liquid storage tank portion on either side of the partition plate is emptied, the water pressure in the adjacent liquid storage tank portion is dispersed on the uneven surface, and the pressure resistance of the partition plate is maintained large. Since it is a surface with repeated irregularities, the amount of water in both of the divided storage tank portions can be made approximately equal at the same water level.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 each show an embodiment of a partition plate for an assembly type liquid storage tank according to the present invention, and FIG. 5 shows an example of the assembly type liquid storage tank. The partition plate is made of FRP, rust-proof metal plate, or other arbitrary material, and is formed into a rectangular plate of an appropriate size capable of partitioning the interior of the assembly type liquid storage tank by arranging a plurality of partition plates of the same shape in parallel. Has become.

The partition plate 1 shown in FIG. 1 is a flange 2 having an appropriate width whose peripheral edge is bent at a right angle to the plate surface.
The inner plate surface is formed as a flat surface 3 with a slight width, and the entire inner plate surface has a wavy shape in which the vertical direction is continuously uneven.
Further, in the left-right direction, any concave surface portion 4 is gradually concave toward the center, and any convex surface portion 5 is formed as a curved concave-convex surface gradually convex toward the center.

The degree of unevenness of the uneven surface portions 4 and 5 may be appropriately set, but it is convenient for stacking and carrying the partition plates 1 to set it so that it is substantially within the overhanging dimension of the flange 2. It is most preferable because the uneven surface portion can be protected by overhanging the flange. Flange overhang dimension is 50-70mm
Degree is general.

Although the uneven pitch may be set appropriately, when the whole is formed to have substantially the same shape and the same pitch, for example, in the partition plate 1 having a height of 1800 to 1900 mm, the uneven surface portion having the unevenness of about 60 mm is formed. The total of 4 to 10 waves, more preferably 6 to 8 waves (8 waves in the figure),
Most preferable in terms of molding efficiency. In the drawing, the intervals between the chain lines P indicate the uneven pitch (the intervals between the chain lines also indicate the uneven pitch in the following examples).

The flange 2 can be used to fix the partition plates 1 in series, or to connect and fix the partition plates 1 to the floor plate, wall plate or ceiling plate, and the flat surface 3 is optional.
It is suitable for use as a connecting surface for reinforcements and accessories.

FIG. 2 shows a partition plate 1A according to another embodiment. This partition plate 1A has a flange 2A and a flat surface 3A similar to those described above, and the inner plate surface is repeatedly made into an uneven surface, and the unevenness of each uneven surface portion 4A, 5A is set to be the same, and a high water pressure is applied from above. It is formed so that the pitch of the unevenness becomes gradually smaller toward the lower part receiving the light. The number of uneven surface portions is, for example, 1,800 in height.
In the figure, a partition plate of ˜1900 mm is shown with six waves formed.

FIG. 3 shows a partition plate 1 according to another embodiment.
B is shown. This partition plate 1B has the same flange 2B and flat surface 3B as described above, and the inner plate surface is repeatedly made into an uneven surface, and the unevenness of each uneven surface portion 4B, 5B is set such that the upper portion is smaller and the lower portion is gradually larger. In addition, the uneven pitch is formed such that the upper part is larger and the lower part is gradually smaller. The number of uneven surface portions is, for example, 1 in height.
In the figure, a partition plate of 800 to 1900 mm is shown with six waves formed.

FIG. 4 shows a partition plate 1C according to another embodiment.
Is shown. This partition plate 1C has a flange 2C and a flat surface 3C similar to the above, and the upper part of the inner plate surface is a flat surface 3C that is continuously flush with the flat surface 3C, and the plate surface portion extending from the middle part to the lower part is formed. The uneven surface is repeatedly formed, and the unevenness of each of the uneven surface portions 4C and 5C is set to be gradually increased from the middle portion to the lower portion, and the uneven pitch is gradually reduced from the middle portion to the lower portion. The number of uneven surface portions is, for example, 1800 to 1900 in height.
In the figure, a partition plate having a size of 4 mm is shown except for the flat surface 3C.

FIG. 5 shows an example of an assembly type liquid storage tank using the partition plate 1 (1A to 1C). In the liquid storage tank 6, a floor plate 8 is laid on a steel skeleton 7, wall plates 9 are erected and fixed with bolts, respectively, and also between the standing floor plate and the wall plate are bolted to divide the inside of the liquid storage tank into two parts. As described above, the partition plates 1 are arranged side by side and similarly fixed by bolts, each seam is appropriately sealed, and the ceiling surface is adhered. Reinforcement materials and accessories are all omitted.

The floor surface is formed by arranging a plurality of floor boards 8 in parallel with each other and bulging upward at the central portion of the floor surface of a flat floor peripheral portion having a flange to improve drainage. The wall surface is formed by forming a flange on the periphery and making the inner surface a flat surface portion, and in order to increase the water pressure strength, the central portion of the plate surface is convexly curved to the outside of the liquid storage tank and bulges out. A plurality of plates 9 are formed side by side.

[0021]

As described above, according to the present invention, since the plate surface of the partition plate is formed as the uneven repeated surface, the load is applied to the entire plate surface even if water pressure is applied from either side. It is possible to increase the strength of the partition plate without being concentrated on the concave surface (the surface that bulges toward the hydraulic load side). Further, by adopting the partition plate between the adjacent liquid storage tank portions formed to have the same volume as that of the present invention, both liquid storage amounts can be maintained at substantially the same amount regardless of changes in the liquid storage water level. .

[Brief description of drawings]

1A and 1B show an example of a partition plate of the present invention, in which FIG. 1A is a front view thereof, FIG. 1B is a top view, and FIG.

2A and 2B show another example of a partition plate, FIG. 2A is a front view thereof, FIG. 2B is a top view, and FIG.

3A and 3B show another example of a partition plate, FIG. 3A is a front view thereof, FIG. 3B is a top view, and FIG.

4A and 4B show another example of a partition plate, FIG. 4A is a front view thereof, FIG. 4B is a top view, and FIG.

FIG. 5 is a schematic perspective view showing an inside of an assembled type liquid storage tank with an outer wall of a central portion omitted.

[Explanation of symbols]

 1 partition plate 2 flange 3 flat surface 4 concave surface portion 5 convex surface portion P uneven pitch

Claims (1)

[Claims] 1. A partition plate for partitioning a prefabricated liquid storage tank into two or more parts, the prefabricated liquid storage having a structure in which at least a lower portion of a wall surface is formed as a wavy corrugated surface with concavo-convex portions on both sides. Partition plate for tank.