JP3162268B2 - tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tank used as a distribution tank for tap water.

[0002]

2. Description of the Related Art In general, in this kind of tap water distribution tank, it is necessary to form a large and high tank body, accommodate a large amount of tap water therein, and secure a predetermined distribution pressure. There is.

On the other hand, in a conventional tank of this kind,
The tank was made of concrete.

[0004]

For this reason, this conventional tank has a problem that the construction period is long.

On the other hand, recently, it has been proposed to form a tank using a stainless steel plate having excellent corrosion resistance. However, if the stainless steel plate is made to have a high thickness and a high strength, the manufacturing cost is increased, and there is a problem that a large or so-called Tallboy type tank which can be practically applied with a high water pressure cannot be constructed.

The present invention has been made by paying attention to such problems existing in the conventional technology. An object of the present invention is to provide a tank capable of constructing a large or tallboy type tank in a short construction period and reducing the construction cost.

[0007]

In order to achieve the above object, in the tank invention according to the first aspect, a high strength metal plate having strength and a corrosion resistant metal plate having corrosion resistance are lined. In a tank that forms a peripheral wall of a tank body using a lining material, the lining material
The lower peripheral wall of the tank body is formed by
The above-mentioned tank is made of a single plate made of only a corrosion-resistant metal plate having
The upper peripheral wall of the main body is formed .

[0008]

[0009]

[0010] In the invention described in claim 2 is the tank in claim 1 serial <br/> mounting, independently formed an outer tank body and the inner tank body, than the outer tank body inside the tank body The height of the inner tank body is increased, and the peripheral wall of the inner tank body is formed of a lining material.

According to a third aspect of the present invention, in the tank according to the second aspect , a vertical passage is formed in the center of the inner tank main body. Therefore, in the tank according to the first aspect, even if the tank body is a large or tallboy type tank, it can be formed in a short construction period, and a sufficient pressure resistance can be ensured. Can be down.

Further, only the lower wall of the tank body where large liquid pressure is applied, especially because it forms a lining material, it is possible to reduce the manufacturing cost of the tank.

[0013]

[0014] Moreover, in the tank according to claim 2, since the tank is out double structure, it is convenient to the tank needed to secure head pressure. Further, in the tank according to the third aspect , the top of the inner tank can be climbed from the vertical passage, so that maintenance and inspection of the tank can be easily performed.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, one embodiment of the present invention will be described.
This will be described in detail with reference to FIGS. As shown in FIGS. 1 and 2, the base 11 is formed of concrete with a predetermined thickness on the ground. A disk-shaped bottom plate 1 as a whole
Numeral 2 is disposed on the upper surface of the base 11 and is formed by connecting a plurality of corrosion-resistant metal plate materials having corrosion resistance, such as a stainless steel plate. The outer tank body 13 is provided on the outer peripheral portion of the upper surface of the bottom plate 12. The inner tank body 14 is independently provided at the center of the upper surface of the bottom plate 12 so as to be smaller in diameter and higher than the outer tank body 13.

The cylindrical member 15 is erected on the upper surface of the bottom plate 12 so as to be located at the center of the inner tank body 14, and a vertical passage 16 is formed in the center of the inner tank body 14 by the cylindrical member 15. The spirally-shaped stairs 17 are provided in the vertical passage 16, and the stairs 17 allow the maintenance and inspection and the like to be performed by climbing the inner tank body 14. The horizontal passage 18 is formed at the bottom of both tank bodies 13 and 14 so as to extend outward from the lower end of the vertical passage 16, and a lid 19 is attached to the outer end.

The lower peripheral wall 20 of the inner tank body 14
Is formed by joining and fixing a number of circularly curved plate members 21 to each other at their opposed edges. Each plate 21 is formed by lining corrosion-resistant metal plates 23 and 24 such as stainless steel plates on both inside and outside surfaces of a high-strength metal plate 22 having strength such as a steel plate. High-strength metal plate material 22 and corrosion-resistant metal plate materials 22 and 23
Is performed by spot welding at a plurality of locations.

Further, as shown in FIG.
A groove 25 is formed at the edge of the plate member 25, and welding is performed by the bonding material 26 at the groove 25, and the opposite edge of the plate body 21 is fixed by welding. A cover plate 27 made of the same material as the corrosion-resistant metal plate members 23 and 24 is joined to the outer surface of each bond material 26.

Further, in this embodiment, the plate thickness of the high-strength metal plate material 22 in each of the plate bodies 21 is formed so as to be larger at lower portions. For example, the thickness of the high-strength metal plate material 22 is
mm, 9mm, 12mm, 15mm, 15mm, 15m
m, 18 mm, and 18 mm. In addition, the corrosion-resistant metal plate 23 of the superposed plate in each plate 21,
24, the inner plate 23 has a thickness of 2.0 mm and the outer plate 2 has a thickness of 2.0 mm.
4 is set to be constant, such as 1.5 mm.

The upper peripheral wall 28 of the inner tank body 14
Are formed by joining and fixing the plate-like bodies 29 to each other at their opposing edges. Each plate body 29 is configured by a single plate made of only a corrosion-resistant metal plate material having corrosion resistance, such as a stainless steel plate.

Further, as shown in FIG.
Flanges 30 and 31 for welding are formed by bending at the end edges, and a pair of reinforcing ribs 32 extending in the lateral direction protrude from the wall. Then, the respective plates 29 are joined and fixed by welding the flanges 30 to each other.

As shown in FIGS. 3 to 5, the roof 33 and the inner ceiling 34 of the inner tank body 14 are arranged at a predetermined interval at the upper end of the upper peripheral wall 28. That is, the annular mounting frame 35 made of steel is fixed to the inner periphery of the upper end of the upper peripheral wall 28, and a plurality of supporting aggregates 36 made of steel are erected between the mounting frames 35 so as to extend in the radial direction in an arch shape. Have been. A roof 33 is formed on the outer surface of the support aggregate 36 by welding and fixing a predetermined number of corrosion-resistant metal plates, such as stainless steel plates, which are cut into a substantially fan-shaped plane, and an annular position is formed at an outer circumferential position of the roof 33. Handrail 37 is disposed.

On the other hand, an annular mounting plate 38 made of a corrosion-resistant metal plate such as a stainless steel plate is welded and fixed to the inner periphery of the upper end of the upper peripheral wall 28 so as to be positioned at a predetermined interval below the mounting frame 35. I have. Then, a predetermined number of corrosion-resistant metal plate materials such as stainless steel plates cut in a belt shape are welded and fixed to the inner peripheral upper surface of the mounting plate 38 to thereby form the inner ceiling plate 3.
4 are formed. The plurality of turnbuckles 39 are disposed between the inner ceiling plate 34 and the support aggregate 36, and the weight of the inner ceiling plate 34 is supported by the support aggregate 36 via these turnbuckles 39.

The outlet 40 is formed at the center of the outer ceiling plate 33 so as to communicate with the upper end of the vertical passage 16, and a lid 41 is attached to the upper end. The pair of exhaust pipes 42 is attached to the roof 33 so as to open the inside of the inner tank body 14 to the outside.
A cover 43 for preventing dust and the like from entering is attached to the upper end of the cover. When tap water is contained in the inner tank body 14 and chlorine gas is generated from the tap water, the chlorine gas is discharged to the outside through the exhaust pipe 42. Therefore, there is no possibility that the mounting frame 3 made of steel, the supporting aggregate 36 and the like will be exposed to chlorine gas and corrode.

As shown in FIGS. 1 and 2, the peripheral wall 44 of the outer tank main body 13 is joined to a plurality of plate bodies 45 at their opposing edges, similarly to the upper peripheral wall 28 of the inner tank main body 14. It is formed by doing.
Each plate body 45 is made of a corrosion-resistant metal plate material having corrosion resistance, such as a stainless steel plate.

As shown in FIG. 7, the edge of each plate body 45 of the outer tank body 13 is also attached to the inner tank body 14.
As in the case of the plate body 29, the welding flanges 46 and 47 are formed by bending, and a pair of reinforcing ribs 48 are formed to project from the wall. The respective plate bodies 45 are joined and fixed by welding between the flanges 47 and 46.

As shown in FIGS. 1 and 2, the roof 49 and the inner ceiling 50 of the outer tank body 13 are also disposed at a predetermined interval on the upper end of the peripheral wall 44 by the same configuration as the inner tank body 14. ing. And, like the inner tank body 14, the outer ceiling plate 49 of the outer tank body 13
An annular handrail 51 is also attached to the outer periphery of the upper surface of the device.

As shown in FIGS. 1, 3 and 8, the cylindrical member 15 is formed by joining and fixing a plurality of plates 52 at their opposing edges. Each plate 52 is formed of a high-strength metal plate 53 made of a pressure-resistant metal plate such as a steel plate, and a corrosion-resistant metal plate 54 made of a corrosion-resistant metal plate such as a stainless steel plate superposed on the outer peripheral surface of the high-strength metal plate 53. Have been.

A water supply pipe 55 is arranged to extend in the vertical direction on the inner surface of the cylindrical member 15, and both ends of the water supply pipe 55
3 and an inner top of the inner tank body 14. The water supply pump 56 is interposed in the middle of the water supply pipe 55, and the pump 56 supplies tap water in the outer tank body 13 through the water supply pipe 55 into the inner tank body 14. Thereby, a predetermined water distribution pressure is applied to the tap water in the inner tank body 14.

The water distribution pipe 57 is disposed at the bottom of the outer tank body 13, and one end thereof is opened at the inner bottom of the inner tank body 14. And in this water distribution pipe 57,
A distribution pipe to a demand destination (not shown) is connected, and tap water in the inner tank body 14 is delivered to the demand destination through the water distribution pipe 57 and the distribution pipe.

Next, a method of constructing the tank configured as described above will be described. At the time of construction of this tank, as shown in FIG. 8, a base 11 made of concrete is previously formed on the ground, and a bottom plate 12 is disposed on the upper surface thereof.
Next, a plurality of cylindrical bodies 52A made of the plate body 52 are sequentially stacked on the center of the upper surface of the bottom plate 12 by a crane truck 58 from the ground, and their opposed edges are welded and fixed to each other to form the cylindrical member 15. Form.

Thereafter, as shown in FIG.
A crane 59 is installed at the upper end of the. The plate 21 is sequentially welded and fixed to the center of the upper surface of the bottom plate 12 by the crane 59 to form the lower peripheral wall 20 of the inner tank body 14. Further, the plate body 29 is sequentially welded and fixed on the lower peripheral wall 20 by the crane 59 to form the upper peripheral wall 28 of the inner tank main body 14. Further, by the crane 59,
The inner ceiling plate 34 and the roof 33 are assembled and fixed on the upper peripheral wall 28.

On the other hand, in parallel with the work of assembling the inner tank body 14, the plate body 45 is sequentially welded and fixed to the outer peripheral portion of the upper surface of the bottom plate 12 by the crane truck 60 from the ground, and the peripheral wall 44 of the outer tank body 13 is fixed. Form. Further, the inner ceiling plate 50 and the roof 4
9 are laminated and assembled and fixed.

The tank of this embodiment has the following advantages. The lower peripheral wall 20 of the inner tank body 14 is formed of a lining material. Therefore, unlike the conventional tank in which the tank body is formed of concrete, the large-sized or tallboy type inner tank body 14 can be formed in a short construction period, and the cost can be reduced. In addition, the lining material carries strength with a high-strength metal plate material, and carries corrosion resistance with a corrosion-resistant metal plate material.
A tank using this lining material is robust, has excellent pressure resistance, and has excellent durability. Particularly, since only the lower peripheral wall of the tank body to which a large liquid pressure is applied is formed of the lining material, the manufacturing cost of the tank can be reduced. As the high-strength metal plate material of the lining material is thicker at the lower side, the pressure resistance of the peripheral wall is appropriately adjusted in response to the liquid pressure applied to the peripheral wall of the tank body gradually increasing from the upper part to the lower part of the peripheral wall. Can be increased. Since the tank has a double inner and outer structure, it is convenient for a tank that needs to secure a water head pressure, such as the tap water tank of the embodiment. By using the vertical passage, a passage for climbing to the top of the inner tank can be provided and an elevator can be arranged, so that the versatility is excellent. Sloshing generated on the water surface in the tank during an earthquake can be absorbed by deformation or destruction of the inner ceiling. Therefore, it is possible to absorb the seismic energy and prevent the main body from being damaged, which is preferable for disaster prevention.

Next, another embodiment of the tank of the present invention will be described.
This will be described with reference to FIG. Now, in this embodiment, a transparent peripheral wall 61 is provided on the upper surface of the top of the inner tank body 14.
And a roof 62 are attached to form an observation room 63. An elevator 64 is provided in the vertical passage 16 of the cylindrical member 15 so that the elevator 64 can be moved up and down from the lower part to the observation room 63.

Further, in this embodiment, the distal ends of the pair of exhaust cylinders 42 are opened on the outer periphery of the inner tank body 14 avoiding the observation room 63. The present invention can be embodied with the following modifications. (1) The entire peripheral wall of the inner tank body 14 is formed by a cylindrical body 21 made of a lining material of a high-strength metal plate 22 and corrosion-resistant metal plates 23 and 24. (2) The peripheral wall 44 of the outer tank body 13 is formed of a cylindrical body made of a lining material of a high-strength metal plate and a corrosion-resistant metal plate. (3) The outer tank body 13 is buried underground. In this case, an insulating layer for protecting the tank from underground stray current is provided on the outer periphery of the outer tank body 13. (4) As a tank construction method, a jack-up construction method should be adopted instead of the construction method shown in FIGS.

The technical idea grasped from the above embodiment will be described below. (1) The lower peripheral wall of the inner tank body is formed by joining and fixing a large number of arc-shaped curved plate members to each other at their opposed edges, and forming a groove at the edge of each plate member. 3. The tank according to claim 2, wherein the groove is welded with a bonding material, and the opposite edges of the plate are fixed by welding. According to this structure, the opposed edges of the respective plate members can be securely joined and fixed. (2) The vertical passage is provided with a spiral staircase.
The tank as described in. With this configuration, it is possible to climb the roof of the inner tank body 14 using the spiral stairs and perform maintenance and inspection.

[0038]

The present invention is configured as described above, and has the following effects. According to the first aspect of the present invention, even a large or tallboy type tank can be constructed in a short period of time and cost can be reduced.

In addition , it is sufficient to use a lining material only in the lower part of the tank to which a particularly large liquid pressure is applied, so that the manufacturing cost of the tank can be reduced.

[0040]

According to the second aspect of the present invention, the outer tank main body and the inner tank main body are independent of each other, which is convenient for a tank requiring a head pressure. According to the invention described in claim 3 ,
The versatility can be improved by appropriately using the vertical passage at the center of the inner tank.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a tank according to the present invention.

FIG. 2 is a perspective view showing the appearance of the tank.

FIG. 3 is a partial longitudinal sectional view showing a ceiling portion of the tank in an enlarged manner.

FIG. 4 is a transverse sectional view showing a ceiling portion of the tank.

FIG. 5 is a partial longitudinal sectional view showing a part of FIG. 3 in a further enlarged manner.

FIG. 6 is an enlarged partial sectional view showing a welding structure of a lower peripheral wall of an inner tank.

FIG. 7 is an enlarged partial cross-sectional view showing a welding structure of an upper peripheral wall of an inner tank.

FIG. 8 is an explanatory view showing a first assembled state in the tank construction method.

FIG. 9 is an explanatory view showing the next assembled state in the tank construction method.

FIG. 10 is a longitudinal sectional view showing another embodiment of the tank of the present invention.

[Explanation of symbols]

11: base, 12: bottom plate, 13: outer tank body, 1
4 ... inner tank body, 15 ... cylindrical member, 16 ... vertical passage, 18 ... horizontal passage, 20 ... lower peripheral wall of inner tank body, 21 ... plate body, 22 ... high-strength metal plate material, 23 ... corrosion-resistant metal plate material, 24 ... Corrosion-resistant metal plate material, 28: upper peripheral wall of the inner tank body, 29: plate body, 33: roof, 34: inner ceiling plate,
44: peripheral wall of the outer tank body, 45: plate, 49: roof plate, 50: inner ceiling plate.

──────────────────────────────────────────────────続 き Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E03B 11/00 E03B 11/12 B65D 88/00-90/66

Claims (3)

(57) [Claims] 1. A tank for forming a peripheral wall of a tank body using a lining material obtained by lining a high-strength metal plate having strength and a corrosion-resistant metal plate having corrosion resistance.
Oite, form the bottom wall of the tank body by the lining material
Made of only a corrosion-resistant metal plate having corrosion resistance
A tank in which an upper peripheral wall of the tank body is formed by a plate . (2) The outer tank body and the inner tank body are separated from each other.
Stand up and form the inner tank body more than the outer tank body
As well as the inner tank body
The tank according to claim 1, which is formed of a sealing material. 3. A vertical passage in the center of the inner tank body.
The tank according to claim 2 formed.