JPH0115667Y2 - - Google Patents

Description

[Detailed description of the invention] Purpose of the invention This invention relates to a storage tank made of double-walled wall plates.

"Industrial Application Field" This invention is used in single- or multi-chamber storage tanks for powder, granular materials, and liquids.

Conventional technology In conventional cylindrical or square cylinder shaped storage tanks,
As seen in the book: Powder storage tank and supply device (Publisher: Nikkan Kogyo Shimbun, Publication date: November 10, 1980), the materials used for tank walls and partition walls are In order to withstand lateral pressure, flat plates with high bending strength are used.

A cylindrical storage tank has the structural advantage that the internal pressure acts uniformly on the tank wall and the side plate (body plate) receives uniform tensile force, but in a multi-chambered storage tank, the internal pressure acts uniformly on the tank wall. A reinforcing member made of shaped steel is installed to compensate for the lack of bending strength of the flat plate.

In a rectangular cylindrical storage tank, the pressure is mechanically applied to the flat plate of the tank wall, so it is necessary to use thicker material or provide sufficient reinforcing members, so the construction cost is higher than that of a cylindrical storage tank. However, it has the advantage of making effective use of a small floor space. In addition, when forming a multi-chamber structure using a flat plate, the plate is reinforced with a reinforcing member made of shaped steel in order to supplement the bending strength of the plate.

In any of the above types of storage tanks, if the storage tank is configured with a flat plate, the following problems arise.

(i) The reinforcing member of the flat plate used for the partition wall forming the multi-chambers constitutes a convex part, and this convex part substantially increases the frictional force when discharging the powder and granules to form bridges and This may cause problems such as the powder and granules that accumulate on the protrusions collapsing, making it difficult to discharge. In addition, the accumulated material that accumulates in the convex portion is likely to undergo deterioration due to changes over time.

(ii) Storage tanks using flat plates are prone to condensation on the inner walls due to temperature differences between day and night due to heat conduction. This condensation impairs the quality of the powder and granules, and promotes adhesion to the inner wall surface of the powder and granules.
Depending on the material of the flat plate, rusting may be promoted. In liquid storage tanks, the temperature difference between inside and outside causes dew condensation on the outer wall surface, causing rust.

(iii) Plane plates have a small section modulus in terms of structural mechanics, so increasing the plate thickness is not very effective, and the strength must be supplemented with reinforcing members, making it expensive.

Structure of the invention ``Problems that the invention attempts to solve'' This invention attempts to solve the problems described in each of the above items caused by the storage tank composed of the above-mentioned flat plates, and to provide it economically. be. This invention adopted the following measures to solve the above problems.

"Means for solving the problem" An intermediate member such as a folded plate or a deck plate is sandwiched between two flat plates, and each contact part is connected to each other.
A heavy structure wall plate is constructed, fitting members are provided at both ends of the wall plate, and the wall plate constitutes a tank wall portion of a storage tank or a partition wall portion with the tank wall portion.

This configuration brings about the following actions and effects.

``Function'' The strength of the flat plates that make up the double-layered wall plate can be increased by combining the mechanical strengths of the intermediate members, so the thickness of the conventionally used flat plates (6
Since it can be made into a thinner plate (1 to 2 mm) than 10 mm), it is lighter and the construction work is easier. Due to the presence of the intermediate member, the section modulus is large and the bending strength can be increased. Furthermore, the intermediate member has a role as a spacer, and the air layer formed by the intermediate member is separated into a narrow volume, so that no air convection occurs and the insulation effect is large and contributes to the prevention of dew condensation.

Therefore, a storage tank made with a double-layered wall plate configured in this manner does not require a reinforcing member since the frame to which the double-layered wall plate is attached is sufficient. In the case of a rectangular cylinder-shaped storage tank, the number of reinforcing members can be significantly reduced even in the case of a large-capacity storage tank.

Further, since a multi-chambered storage tank does not require an internal reinforcing member, the inner wall surface can be made smooth, thereby reducing the occurrence of bridging and collapsing phenomena.

In the case of a liquid storage tank, the intermediate member of the double-layered wall plate is oriented horizontally, the lower part of the tank wall is made watertight, and water is injected into the hollow part of the double-layered wall plate to perform a leakage test of the tank. The test can be performed at a much lower cost than injecting water into a storage tank and performing a leakage test.

Next, the configuration of this invention will be explained based on the accompanying drawings showing examples.

"Example" Figure 1 is a sectional view of a double structure wall board made of folded plates, Figure 2 is a sectional view of a double structure wall board made of deck plates, and Figure 3 is a partially cutaway view. 2 shown
It is a perspective view of a heavy structure wall board.

In each figure, 1 and 1' are flat plates, 2 is a folded plate as an intermediate member, and 3 is a deck plate, and these intermediate members are commercially available as shaped iron plates. A double structure wall board is constructed by sandwiching the intermediate member between the flat plates 1 and 1' and joining them together 4 by riveting or spot welding the abutting portions of the two members.

Fitting members 5 (illustrated as groove-shaped steel) are fitted to both ends of the double structure wall plate constructed in this way.

The illustration shows an example in which the folded plate 2 and the deck plate 3 are used as intermediate members in a single layer to form a double structure wall plate. As shown in FIG. 5, the intermediate members are crossed, or as shown in FIG. 5, the intermediate members are placed back to back to constitute a double structure wall board. Although FIG. 4 and FIG. 5 show an example of the folded plate 2 as the intermediate member, the deck plate 3 can also be constructed in the same manner.

Further, a heat insulating material such as glass wool or perlite may be enclosed in the hollow portion formed by the intermediate member. By doing so, the heat insulation effect can be increased.

FIG. 6 is a diagram showing one embodiment of a storage tank constructed using the double wall structure described in this invention.

Main columns 8 of a predetermined length are erected at predetermined intervals on the surface of the slab 7 constructed with reinforced concrete columns 6, and a double structure wall plate represented by the symbol A is inserted between the main columns. The outer wall portion is constituted by the outer wall portion. The main pillar is selected to have a cross-sectional shape that allows the double-layered wall plate to be inserted into it. In practice, a shaped steel column or a composite shaped steel column is used. When configuring it to have multiple rooms, it is constructed by inserting double wall panels between the main pillars according to the number of rooms. In the diagram, 9 is a hopper, 10 is a horizontal member, 11 is a stud, 12
13 is a burr member, 14 is a handrail, 15
indicates stairs.

Effects of the invention By configuring as described above, this invention brings about the following effects unique to this invention.

a. All inner wall surfaces are completely smooth, so crosslinking,
Effective in preventing collapse phenomena.

b. Great insulation effect, less condensation due to temperature differences, etc.

c. Since no reinforcing members are particularly required, construction costs are low, the appearance of the storage tank is beautiful, and painting and repair costs can be reduced.

[Brief explanation of the drawing]

The drawings show the embodiments of the present invention, and the drawings show the first embodiment.
2 and 2 are cross-sectional views showing the structure of the double structure wall, FIG. 3 is a partially cutaway perspective view of the double structure wall board, and FIGS. 4 and 5 are the double structure walls. FIG. 6 is a sectional view showing another embodiment of the plate, and FIG. 6 is a diagram of one embodiment of a storage tank constructed using a double-layered wall plate. Explanation of symbols, 1, 1'...Flat plate, 2...Folded plate,
3...Deck plate, 4...Joining portion, 5...Fitting member, 8...Main pillar.

Claims (1)

[Scope of utility model registration request] An intermediate member such as a folded plate or deck plate is sandwiched between two flat plates, and fitting members are provided at both ends of a double structure wall plate formed by connecting each contact portion to each other,
A storage tank having a double structure wall plate structure, in which the double structure wall plate is provided between the main columns via the fitting member.