JP6156051B2 - Liquid storage tank - Google Patents

Description

  The present invention relates to a liquid storage tank, and more particularly to a liquid storage tank having a robust structure capable of preventing liquid leakage over a long period of time.

  As a tank for storing a liquid, a tank configured by laminating strip-shaped steel plates rounded into a ring shape is known. For example, as shown in FIGS. 1A (front view) and (B) (plan view), a plurality of steel plates 12 are welded (18) and FIG. As shown in B), it has an outer wall constituted by being joined at a joining portion 14 by a bolt 20. In the figure, 16 is a flange, 22 is a staircase, and 24 is a handrail.

  In such a liquid storage tank 10, the liquid storage tank 10 was stored due to external factors such as long-term storage, earthquake, ground subsidence, corrosion of the steel material (12), loosening of the bolt 20, cracking of the welded portion 18, and the like. It is important that the liquid does not leak from the joint 14 or the like.

  Then, like patent document 1, making the whole or a part of liquid storage tank into a double structure is performed.

JP 2000-55795 A

  However, it has been difficult to stabilize the structure over a long period of time and prevent liquid leakage.

The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide a liquid storage tank having a manhole, which can prevent the liquid leakage by stabilizing the structure over a long period of time.

In the liquid storage tank constituted by joining a plurality of plate members, the bottom surface and the side surface are doubled, and the inner wall and the outer wall are integrally connected by a structural member having a diaphragm structure. the leakage preventing a heavy structure, further, by Rukoto provided manhole to the structural member of the diaphragm structure is obtained by solving the above problems.

According to the present invention, the inner wall and the outer wall of the bottom surface and the side surface having a double structure are effectively coupled by the structural member of the diaphragm structure, and not only the distance between the outer wall and the inner wall is kept constant, but also Since the structure is integrated and resists external force, the structure can be stabilized over a long period of time and liquid leakage can be prevented.

(A) Front view and (B) Plan view showing an example of a conventional liquid storage tank Sectional drawing which shows the example of the joining structure of the steel plate of the conventional liquid storage tank Showing a reference embodiment of the liquids storage tank (A) a front view and (B) a plan view It shows the implementation form of a liquid storage tank according to the present invention (A) a front view and (B) a plan view

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by the content described in the following embodiment and an Example. In addition, the constituent elements in the embodiments and examples described below include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in the so-called equivalent range. Furthermore, the constituent elements disclosed in the embodiments and examples described below may be appropriately combined or may be appropriately selected and used.

First, a reference form will be described. As shown in FIGS. 3A (front view) and (B) (plan view), this reference embodiment has a liquid storage tank 10 formed by joining a plurality of steel plates 12 with a double bottom and side surfaces. In addition, the inner wall 32 and the outer wall 30 are integrally coupled by a truss structure coupling material 34 that is a structural member.

  The truss structure bonding material 34A between the side surface 30A of the outer wall 30 and the side surface 32A of the inner wall 32 can be provided in the vertical direction at equal intervals, for example, at eight locations in the circumferential direction.

  Further, the truss structure bonding material 34B between the bottom surface 30B of the outer wall 30 and the bottom surface 32B of the inner wall 32 can be provided, for example, at eight equal intervals in the radial direction.

  Thus, even if water leakage occurs from the inner wall 32, the outer wall 30 can prevent water leakage even if the bottom surface and side surfaces of the tank have a double structure.

  Further, by connecting the inner wall 32 and the outer wall 30 with the truss structure bonding material 34, the wall cross section is made into an integral structure, and the cross sectional forces such as bending, shearing, axial force, and membrane force generated on the wall surface are effectively resisted. Can do.

Next, referring to FIG. 4, illustrating the implementation of the invention.

This embodiment, instead of the truss structure bonding material 34 of the reference embodiment, as a structural member, the diaphragm structure coupling member 40 arranged in the vertical direction is provided Rutotomoni, in the diaphragm structure binder 40, a manhole worker can pass It is provided .

Here, the diaphragm structure coupling member 40 can be provided with a stiffener 4 2.

In the above embodiments, the steel sheet is used as the plate material has been adapted to accommodate the waste, the material and accommodating the object, but not limited to.

DESCRIPTION OF SYMBOLS 10 ... Liquid storage tank 12 ... Steel plate 14 ... Joint part 16 ... Flange 18 ... Welded part 20 ... Bolt 30, 30A, 30B ... Outer wall 32, 32A, 32B ... Inner wall 34, 34A, 34B ... Truss structure coupling material 40 ... Diaphragm structure Binder

Claims (1)

In a liquid storage tank configured by joining a plurality of plates,
The bottom and side surfaces are doubled,
The inner wall and the outer wall are integrally joined by a structural member having a diaphragm structure,
Liquid leakage is prevented by the double structure of the inner wall and the outer wall ,
Furthermore, a liquid storage tank , wherein a structural member having the diaphragm structure is provided with a manhole .

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