JPH02205593A - Construction of lined vessel - Google Patents

Abstract

PURPOSE:To permit the construction of a large-size inland lined vessel by welding to a force material a backing metal, to which a lining plate is then welded to form a single panel and joining together a plurality of such panels to align welding seams, on both of which leakage detecting grooves are formed. CONSTITUTION:The force material 12 consisting of a shape steel 14 shaped into the form of a frame and a steel plate 15 attached thereto serves to function as a forming plate upon placing concrete 7. A backing metal 13 and the steel plate 15 are welded to the force material 12 and a lining plate 11 is welded to the backing metal 13 and the steel plate 15 to form a single panel 1b. The lining plates 11 are aligned into a single welding seam and a plurality of single panels 1b are joined together on the back side of this welding seam into a panel block in a job site, thereby forming the backing metals 13 automatically. The backing metals 13 become factors to constitute leakage detecting grooves 6 on both sides of the welding seam. Although the panels are required to be fitted with one another accurately in the job site, the fit of the backing metal 13 with the lining plate 11 leads to an automatic fit between force material 12.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Industrial Field of Application) The present invention relates to a method for constructing lined vessels for use in nuclear power plants or general chemical plants.

(Prior Art) Lined containers lined with metal such as stainless steel are widely used in nuclear power related facilities or general chemical plants. For example, in a nuclear power facility,
Stainless steel lined containers for storing radioactive waste are used to store radioactive waste generated at nuclear power plants and to attenuate radioactivity.

Lined containers with large capacities are being used as power generation capacity increases, and their role is becoming increasingly important. In addition, there is an increasing demand for installation locations in inland areas, primarily in coastal areas.

Two typical examples of conventional lined containers are shown in Figures 8 to 1.
This will be explained with reference to Figure 0.

The first example has a structure as shown in FIGS. 8 and 9, and is a method in which a container is constructed by assembling a plurality of large panels 1 to increase the size of the lined container.

That is, in FIG. 8, the panel 1 is the lining plate 1.
An embedded material 12 is attached to the back surface of the metal plate 1 through a backing metal 13 and a steel plate 15. This embedding material 12 has a mold MA.
14 are used. A leak detection groove 6 is formed between the backing metal 13 and the steel plate 15. The embedded material 12, the backing metal 13, and the steel plate 15 are necessarily integrated by welding 16 at the factory in advance. Lining plate 11 and adjustment lining plate 4
and will be welded on-site. After the connecting material 3 is fastened to the backing metal 13 with bolts and nuts 8, concrete 7 is poured. FIG. 9 shows a perspective view of the large panel 1 formed by connecting the reinige plates 11.

In this way, in the first example, since it is difficult to directly attach the large panels 1゜1 to each other, the adjustment lining plate 4 is placed on the connection material 3 with the interposition of the connection material 3 at the site and adjusted and cut. The container is constructed by forming the surface of the lining plate 11.

Therefore, when constructing this container, there are two weld lines for on-site welding 5 between panels at two locations where the panels are joined.

In the second example, as shown in FIG. 10, the adjustment lining plate 4 is interposed between the lining plate 11 and the panel 1 is welded on site 5.
a, and these panels are combined to construct a lined container. Note that the embedded material 12 and the lining plate 11 are factory welded 16 in advance. In this way, in the second example, the large panels 1a and 18 are directly assembled, but the lining plates 11 are not directly welded together, but the adjustment lining plate 4 is used. Therefore, there are two on-site welding lines.

(Problems to be Solved by the Invention) In order to cope with the increase in size of conventional lined containers, even if large panels are used, two weld lines are generated at the joints of the large panels. Therefore, there is a problem that the on-site construction period is hardly shortened and on-site welding is not reduced. As a result, welding is often performed on-site due to poor quality control, which is the most important quality control for containers, and the construction period is also becoming longer.

It is also possible to increase the size to the extent that there is a gain in size, even with two weld lines, but in that case the dimensions must exceed the limits for overland transportation through roads.

In other words, sea transportation by ship becomes the only means of transportation. If we manufacture panels with dimensions that can be transported over land,
Since two weld lines are generated at the subdivision, the on-site weld line becomes longer relative to the lining area. Therefore, the benefit of shortening the construction period (
q is lost, and the disadvantage of having to work hard to maintain on-site welding quality becomes greater.

Even if it were to be transported by sea because there would be a profit in increasing the size, a large lifting machine would be required for on-site assembly, which would eventually lead to restrictions on construction work. This restriction is due to the timing of the construction of the lifting machine, and if there are only inning containers within the working radius.
The restriction is that H cannot be performed. In other words, there is a problem that the lining container cannot be laid out freely and can only be installed near a large lifting machine.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a method for constructing a lined container having the following effects.

■ Eliminate transportation restrictions by using panels that fall within land transportation restrictions.

■ It will be possible to construct large lined containers even in inland areas, excluding restrictions on the installation locations of lined containers.

■ It will be possible to manufacture panels even in inland factories, except for restrictions on manufacturing locations.

■ Eliminates the need for the use of large lifting machines, which is a limitation of on-site assembly, and enables on-site assembly using small lifting machines.

■ Improve quality reliability of lined containers by reducing on-site welding.

[Structure of the Invention] (Means for Solving the Problems) The present invention involves welding an embedded material to a lining plate to form a single panel, and joining a plurality of the single panels to form a panel block into a container shape. In a method for constructing a lie 3 container, in which after assembly, concrete is poured for the frame and then welded at the seams of the lining plates of the panel block, a backing metal is welded to the embedded material in advance, and the backing metal is A lining plate is welded to gold to form a single panel, a plurality of the single panels are combined so that there is a single weld line, and leakage detection grooves are formed on both sides of the weld line. do.

(Function) The embedded material is welded to the lining plate, and the embedded material is formed into a frame shape within dimensions that can be transported by land to form a single panel. The mating surfaces of this single panel will be in the correct plane. The edge of the lining plate on the outer periphery of the panel is positioned on the backing plate when the panels are assembled together. The procedure is to assemble with the goal of matching the backing metal and lining plate, and the embedded materials will match.

Therefore, there is only one weld line between the lining plates, and a backing metal is automatically set on the back side of the welding line by assembling a single panel on site to form a panel block, and the backing metal is used to detect leakage. Leak detection grooves are formed on both sides of the weld line as elements constituting the groove. When assembling panels on-site, it is necessary to match them accurately, but if you match the backing metal and the lining board, the embedded materials will automatically match.

(Example) A first example of the present invention will be described with reference to FIGS. 1 to 3.

FIG. 1 is a plan view showing one wall surface of a lined container in which panels 1b are assembled according to the present invention, and the panels 1b are assembled so that the weld lines 5 of the lining plates 11 are shifted so that they do not intersect in a cross shape.

Fig. 2 is a perspective view of the panel 1b shown in Fig. 1.The lining plate 11 is factory-welded to the embedded material 12 to form the panel 1b.The panel 1b is a single unit suitable for truck transportation. It is rectangular.

FIG. 3 is a partial cross-sectional view of the joint portion of the panels 1b of the lined container according to the present invention.

The embedded material 12 is made by attaching a steel plate 15 to a frame-shaped steel 14 to provide the function of a concrete form board when pouring concrete 7. A backing metal 13 and a steel plate 15 are welded to the embedded material 12, and the lining plate 11 is roughly welded to the backing metal 13 and the steel plate 15 to form a single panel 1b.

In this embodiment, the unit panel 1b constructed as described above is first transported locally by truck, and the first stage is set using a small lifting machine. When setting the second stage on top of that, the lower end of the upper lining plate 11 is placed over the backing metal 13, so that the mating surfaces of the embedding machine 12 naturally match. Repeat this process to assemble the whole thing. On-site welding 5 may be performed before or after pouring concrete 7, depending on the local construction plan.

As is clear from the above embodiments, according to the present invention, only one welding line 5 is required at the seam of panel blocks, so even panels with dimensions that can be transported by land have a ratio of area to welding amount comparable to that of panels transported by sea. can be realized. Also, local panel 1
Assembly of b is also simple.

Precise contact between the backing metal 13 and the lining plate 12, which is the basis of welding, is naturally improved because this work becomes the standard for assembly work, and the finished quality of on-site welding is high.

FIG. 4 is for explaining the second embodiment, in which the on-site assemblability is further improved by using a guide 8 in FIG. 3 shown in the first embodiment.

Since the other parts are the same as those in FIG. 3, the explanation of the overlapping parts will be omitted.

FIG. 5 shows the third embodiment, in which the backing metal 13 is divided in half and welded together with the lining plate 11 in the field welding 5, so that the outer periphery of the panel 1 is a simple rectangle. This makes on-site assembly a simple task. The lining plate 11 has a concrete formwork function.

FIG. 6 shows a fourth embodiment, in which a backing metal 13 protrudes from the mold vR14 of the mating surface of the embedding material 12 and also serves as a guide.

FIG. 7 shows a fifth embodiment, in which factory welding is concentrated on the upper part of the lower stage so that the leak detection groove 6 in the lower stage does not become open at the top during on-site assembly.

[Effect of the invention] According to the present invention, the following effects can be obtained.

(1) Since there is only one welding line at the panel joint, it is possible to greatly reduce the on-site welding ω relative to the area of the panel within the land transportation limit dimensions.

(2) Since it can be transported by truck, manufacturing plants can be located inland;
Also, construction can be done in inland areas.

(3) Since the working standards for on-site assembly are matched to the backing metal and the edge of the lining plate, alignment, which is the basis of welding quality, is performed with priority, and the checking surface of the working standards is the surface inside the lining container. Therefore, accessibility and work management are good.

[Brief explanation of the drawing]

1 to 3 are for explaining the first embodiment of the present invention, FIG. 1 is a plan view showing one side of the lined container, and FIG. 2 is a partial cross-section of a single panel. FIG. 3 is a partial sectional view of one side of the lined container, and FIGS. 4 to 7 are views of a lined container for explaining second to fifth embodiments of the method of the present invention. 8 to 10 are for explaining the conventional example, and FIG. 8 is a partial sectional view showing one side of the lined container.
FIG. 9 is a perspective view showing a single panel partially in section, and FIG. 10 is a partial sectional view of a lined container for explaining another conventional example. 1... Panel 3... Connecting material 4... Adjustment lining plate 5... Field welding 6... Leak detection groove 7... Concrete 8... Guide 11... Lining plate 12...・Embedding material 13...Backing metal 14...Shape steel 15...Steel plate 16...Factory welding (8733) Agent Patent attorney Yoshiaki Inomata (and others)
1 person) Figure 1 Figure 2 Figure Figure Figure Figure Figure Figure

Claims (1)

[Claims] welding the embeds to the lining plate to form a single panel;
In the method for constructing a lined container, the method for constructing a lined container includes assembling a panel block into a container shape by joining a plurality of the single panels, pouring concrete for the frame, and then welding the joints of the lining plates of the panel block. A backing metal is welded to the filling material in advance, a lining plate is welded to the backing metal to form a single panel, a plurality of the single panels are assembled so that there is a single welding line, and the welding is performed. A method of constructing a lined container characterized by forming leakage detection grooves on both sides of the line.