JPH11256864A - Constructing method of external tank for industrial-gas manufacturing facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce cost by shortening the term of works, to improve safety by shortening a welding operation time at a high place and to construct an external tank with high accuracy. SOLUTION: The industrial-gas manufacturing facility is composed of a plurality of consolidation vessels and the external tank, etc., in which a plurality of these consolidation vessels are housed in an airtight manner. The external tank 16 is constituted of vertical aggregate, horizontal aggregate 24 and a panel unit 26. At least four vertical aggregate are installed so as to be placed at each apex of a rectangle in a plan view, and these vertical aggregate are made up of a large number of vertical aggregate members 28 in length, in which vertical aggregate is divided in the vertical direction. The vertical aggregate members 28 have aggregate 2802 and panel materials 2804 mounted on aggregate 2802. The horizontal panel unit 26 is assembled so that a plurality of panel materials 2602 having approximately the same vertical length as the vertical aggregate members 28 and thin width in the horizontal direction are placed on the same surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing an outer tank for hermetically covering the outside of a compacted container in an industrial gas production facility.

[0002]

2. Description of the Related Art For example, in a facility for producing industrial gas such as oxygen, nitrogen or argon, an upper rectifying tower, a lower rectifying tower, a condenser, a heat exchanger and the like are arranged vertically. An outer tank is provided to hermetically cover the outside. In order to enhance the heat insulation of these containers, a heat insulating material such as perlite is filled between the container and the outer tank, and furthermore, the pressure inside the outer tank is increased to maintain the internal pressure of the container and prevent gas leakage. Can be hung. Conventionally, this type of outer tank is constructed so that at least four vertices are located at the vertices of a rectangular shape in plan view that is large enough to accommodate the above-mentioned upper rectification tower, lower rectification tower, condenser and the like.
The vertical aggregates of the book are erected vertically, and the horizontal aggregates are horizontally laid over a plurality of vertically spaced portions between adjacent vertical aggregates. It is performed by joining a large number of iron plates to the aggregate by seal welding.

[0003]

However, the above construction method has the following problems. (1) Since a steel plate is lifted one by one, a scaffold is assembled, and a welder welds at a high place, a construction period is required, and the cost is increased. (2) There is a problem in terms of safety because work at high places is often performed and the work time at high places becomes long. (3) Since the steel plates suspended at high places are welded one by one, high accuracy cannot be ensured. The present invention has been devised in view of the above circumstances, and an object of the present invention is to shorten the construction period to reduce costs, and also to improve safety by shortening working time at a high place, It is still another object of the present invention to provide a method for constructing an outer tank of an industrial gas production facility that can ensure high accuracy.

[0004]

In order to achieve the above-mentioned object, the present invention is directed to a method for positioning a plurality of consolidation containers for industrial gas production, which are arranged one above the other, at each apex of a rectangular shape in a plan view. , At least four vertical aggregates are erected vertically, and horizontal aggregates are horizontally laid over a plurality of vertically spaced portions between adjacent vertical aggregates, and the outer side of these vertical aggregates and the horizontal aggregates At the time of constructing an outer tank of an industrial gas production facility by mounting a plurality of panels on the outer side of the panel, an aggregate having a length obtained by dividing the vertical aggregate in the vertical direction, and the aggregate being positioned at the top of a rectangle. A large number of vertical aggregate members made of a panel material attached to the aggregate so as to have two surfaces located on two sides of the apex of the rectangle when placed in Assemble a plurality of narrow panel materials in the horizontal direction so that they are located on the same plane. A large number of panel units are prepared, and when the aggregate of the vertical aggregate member is viewed in a plan view, the panel material attached to the aggregate is positioned so as to be located at the apex of the rectangle. Erected vertically on two sides forming the apex of the horizontal aggregate, and horizontally spans the horizontal aggregate between the upper ends of the aggregates of the adjacent vertical aggregate members. Then, the panel unit is assembled between the panel members of the vertical aggregate member to close a gap between the panel members of the adjacent vertical aggregate members. The aggregate of the aggregate member is added, and then the horizontal aggregate is horizontally extended between the upper ends of the aggregates of the added vertical aggregate member. Panel members of adjacent vertical aggregate members are assembled by assembling the panel unit between the panel members. By closing the gap between the materials, adding the aggregates of the vertical aggregate members, bridging the horizontal aggregates, and repeating the work of assembling the panel unit, an outer tank that covers the outside of the consolidation container airtightly is constructed. It is characterized by having done. Further, the present invention also provides a method for adding the vertical aggregate members, bridging the horizontal aggregate, and covering the outside of the consolidation container by repeating the assembling work of the panel unit, between the upper and lower panel units, and the vertical aggregate. A seal is provided between upper and lower panel members attached to the member and between the panel unit and the panel member attached to the vertical aggregate member. Further, the present invention is characterized in that a stair for inspection is attached to each panel unit in advance.

According to the present invention, since a vertical aggregate member having a panel material attached thereto and a panel unit having a plurality of panel materials attached thereto are used, welding work at high places can be greatly reduced, and the construction period can be reduced. , Cost reduction, safety improvement, and high accuracy can be achieved.

[0006]

Next, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view of the industrial gas production facility as viewed from the front, FIG. 2 is a perspective view of the industrial gas production facility as viewed from the back, and FIG. FIG. 4 is an explanatory view of the outer tank and the consolidation container as viewed from the front, and shows a perspective view of the industrial gas production facility as viewed from the back. The industrial gas production facility 12 includes a plurality of consolidation containers 14, an outer tank 16 for accommodating the plurality of consolidation containers 14 in an airtight manner, and a heat insulating material such as perlite filled in a space between the consolidation containers 14 and the outer tank 16. It is composed of materials.

[0007] The consolidation container 14 is provided with a heat exchanger 1402 disposed at the lower part of the facility, a condenser 1404 disposed above the heat exchanger 1402, and a vertical direction extending sideways of the heat exchanger 1402. Rectification tower 1406, lower rectification tower 14 toward
An upper rectification tower 1408 and the like are disposed on the lower rectification tower 1406 coaxially with the rectifier 06. These compacted containers 1
4 is supported by a support member protruding from the inner surface side of the outer tub 16, so that each time the outer tub 16 is constructed at a predetermined height,
The consolidation container 14 is suspended and fixed inside the outer tank 16 by a crane. Further, every time the outer tub 16 is constructed at a predetermined height, a heat insulating material is packed in the space between the consolidation container 14 and the inner surface of the outer tub 16. Reference numeral 18 denotes a stair provided in the outer tub 16.

The outer tank 16 is provided in such a size that a plurality of consolidation containers 14 are accommodated, and when viewed in a plan view, the lower part is formed by combining two rectangles, and the upper part is a lower rectifying tower 140.
6 and an upper rectification tower 1408 are formed in a rectangular shape. As shown in FIGS. 5 and 6, the outer tub 16 includes a vertical aggregate 22, a horizontal aggregate 24, and a panel unit 26.

At least four vertical aggregates 22 are provided so as to be located at the vertices of a rectangle when viewed in a plan view. These vertical aggregates 22 have a length obtained by dividing the vertical aggregate 22 in the vertical direction. Consists of a number of vertical aggregate members 28. As shown in the plan view of FIG. 6A and the perspective view of FIG. 6B, the vertical aggregate member 28 is an aggregate 28 made of H-shaped steel (or I-shaped steel).
02, and a panel material (iron plate) 2804 attached to the aggregate 2802 so as to have two surfaces located on two sides of the vertex of the rectangle when viewed in plan.

As shown in FIG. 6 (C), the horizontal aggregates 24 are horizontally laid over a plurality of vertically spaced portions between adjacent vertical aggregates 22. In this embodiment, H-shaped steel (or I-shaped steel) is used as the horizontal aggregate 24. In addition, as shown in the upper part of the vertical aggregate at the left corner of FIG. 5 (B), the horizontal aggregate 24 is hung horizontally, so that the reinforcement that projects in the horizontal direction is provided at the upper end of the aggregate 2802 of the vertical aggregate member 28. Lumber 280
6 is optional.

As shown in FIG. 6 (D), the panel unit 26 includes a plurality of panel members (iron plates) 2602 having substantially the same vertical length as the vertical aggregate member 28 and having a narrow width in the horizontal direction. In FIG. 6D, reference numeral 2604 denotes a reinforcing member attached to the back surface of the panel member 2602.

When constructing the outer tank 16 of the industrial gas production facility 12, first, when the vertical aggregate member 28 is viewed in plan, the vertical aggregate member 28 is positioned at the apex of the rectangle and the vertical aggregate member 28 Is vertically set so that the panel material 2804 attached to the top is located on two sides forming the vertices of the rectangle. In this case, one side or a plurality of aggregates are erected between the vertical aggregate members 28 located at the vertices since one side of the rectangle is longer at the lower part of the outer tub 16.

Next, the horizontal aggregate 24 is horizontally extended between the upper ends of the adjacent vertical aggregate members 28, and is fixed by bolts or nuts or by welding. Next, the panel unit 2 is disposed outside the horizontal aggregate 24 and between the vertical aggregate members 28.
6 are assembled and joined by shield welding, and the panel units 2804 of the adjacent vertical aggregate members 28 are closed by the panel unit 26.

Next, the next vertical aggregate member 28 is added to the upper end of the vertical aggregate member 28, and the horizontal aggregate 24 is horizontally extended between the upper ends of the added vertical aggregate members 28. Next, the panel unit 26 is assembled between the vertical aggregate members 28 added below the horizontal aggregate 24, and the space between the panel members 2804 of the adjacent vertical aggregate members 28 is closed. And these vertical aggregate member 28, horizontal aggregate 24,
As shown in FIG. 6E, the panel unit 26 is taken in by hanging it inside the scaffold 40 around the outer tub 16. Thereafter, the outer tub 16 is assembled by successively repeating the addition of the vertical aggregate members 28, the bridging of the horizontal aggregate 24, and the assembly of the panel unit 26 upward.

After the outer tub 16 is assembled, as shown in FIG. 7, a worker rides on the gondola 42, and between the panel members 2804 of the upper and lower vertical aggregate members 28, between the upper and lower panel units 26, and the panel members. 2804 and panel unit 26
A seal is provided therebetween, thereby forming the outer tank 16.

Therefore, the outer tank 16 according to the present embodiment is
According to the construction method described above, it is not necessary to lift the iron plates forming the surface of the outer tub 16 one by one as in the conventional case, and the welding work at a high place can be largely reduced, thus shortening the construction period and reducing the cost. And safety can be improved. Further, an operation of welding the panel material 2804 to the aggregate 2802 to obtain the vertical aggregate member 28 and a plurality of panel materials 2602 to obtain the panel unit 26
Can be performed on the ground or in a factory, so that the outer tub 16 assembled from these vertical aggregate members 28 and the panel unit 26 can be used.
Can be improved in accuracy. Further, the inspection stairs 18 are divided into a plurality in the extending direction, and the panel members 2804 of the vertical aggregate members 28 and the panel units 26
If the panel material 2602 is attached in advance, the stairs 18
Can be simplified, the construction period can be shortened, and the cost can be further reduced.

[0017]

As is clear from the above description, the present invention
When constructing the outer tank of an industrial gas production facility, a number of vertical aggregate members with panel materials attached to the aggregate, a number of horizontal aggregates, and a plurality of panel materials are arranged in advance so that they are located on the same plane. Prepare a large number of assembled panel units,
The outer tub was constructed by sequentially assembling the vertical aggregate members, the horizontal aggregates, and the panel unit. Therefore, compared to the conventional method in which a large number of iron plates are lifted one by one at a high place with a scaffold, and the welder welds, the construction period can be shortened and costs reduced, and welding work time at a high place , The safety can be improved, and the outer tank can be constructed with high accuracy.

[Brief description of the drawings]

FIG. 1 is a perspective view of an industrial gas production facility as viewed from the front.

FIG. 2 is a perspective view of the industrial gas production facility as viewed from the back.

FIG. 3 is an explanatory view of an outer tank and a compaction container, and is a perspective view of an industrial gas production facility as viewed from the front.

FIG. 4 is an explanatory view of an outer tank and a compaction container, and is a perspective view of an industrial gas production facility as viewed from the back.

5A and 5B are explanatory diagrams of assembling vertical aggregates, horizontal aggregates, and panel units, wherein FIG. 5A shows both a compacted container and a work scaffold, and FIG. 5B shows a diagram with the compacted container and the work scaffold removed; It is.

6A is a plan view of a vertical aggregate member, FIG. 6B is a perspective view of a vertical aggregate member, FIG. 6C is a perspective view of a horizontal aggregate member,
(D) is a perspective view of a panel unit, (E) is an explanatory view of a state in which vertical aggregates and panel units are taken in.

FIG. 7 is an explanatory diagram of a sealing operation.

[Explanation of symbols]

 12 Industrial gas production facility 14 Consolidation container 16 Outer tub 24 Horizontal aggregate 26 Panel unit 28 Vertical aggregate member

Continuation of front page (72) Inventor Masakazu Naroo 6-2 Kojimacho, Kawasaki-ku, Kawasaki-shi, Kanagawa

Claims (3)

[Claims] 1. At least four vertical aggregates are erected vertically so as to be positioned at respective vertices of a rectangular shape in a plan view having a size that accommodates a plurality of consolidation containers for industrial gas production arranged vertically. The horizontal aggregate is horizontally spread over a plurality of locations vertically spaced between adjacent vertical aggregates, and a plurality of panels are attached to the outside of these vertical aggregates and the outside of the horizontal aggregates to produce an industrial gas production facility. When constructing the outer tub, an aggregate having a length obtained by dividing the vertical aggregate in the vertical direction and, when the aggregate is placed so as to be located at the apex of the rectangle, the aggregate is located on two sides of the apex of the rectangle A large number of vertical aggregate members made of a panel material attached to the aggregate so as to have two surfaces are prepared, and a plurality of horizontally narrow panel materials having substantially the same vertical length as the vertical aggregate member are provided on the same surface. Prepare a number of pre-assembled panel units to be located in the vertical When the aggregate is viewed in a plan view, the aggregate member is positioned at the apex of the rectangle, and the panel material attached to the aggregate is positioned on two sides forming the apex of the rectangle. The vertical aggregate is erected vertically, and the horizontal aggregate is horizontally extended between the upper ends of the aggregates of the adjacent vertical aggregate members. Next, the outer side of the horizontal aggregate, between the panel members of the vertical aggregate members, The panel unit is assembled to close the gap between the panel members of the adjacent vertical aggregate members. Next, the aggregate of the next vertical aggregate member is added to the upper end of the aggregate of the vertical aggregate member. The horizontal aggregate is horizontally extended between the upper ends of the aggregates of the vertical aggregate members. Next, the panel units are assembled between the panel members of the vertical aggregate members and are adjacent to each other outside the horizontal aggregate. The gap between the panel members of the vertical aggregate member is closed, and the vertical aggregate member is thus closed. An outer tank of an industrial gas manufacturing facility, characterized by constructing an outer tank that airtightly covers the outside of the compacted container by repeating the work of adding aggregate, bridging the horizontal aggregate, and assembling the panel unit. How to build. 2. After covering the outside of the consolidation container by repeating the addition of the vertical aggregate members, the bridging of the horizontal aggregates, and the assembling work of the panel units, between the upper and lower panel units and between the vertical aggregate members. 2. The industrial gas production facility according to claim 1, wherein a seal is provided between the upper and lower panel members attached to the panel member and between the panel unit and the panel member attached to the vertical aggregate member. How to construct an outer tank. 3. A staircase for inspection is attached to each panel unit in advance.
A method for constructing an outer tank of an industrial gas production facility as described in the above.