JPH0645971B2 - Post device for side plate repair of storage tank - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of Industrial Application The present invention relates to a column device suitable for repairing a side plate of a large tank that stores various oils and gases.

(2) Conventional Technology Conventionally, when the side plate of a storage tank is refurbished, as shown in FIG. 8, a heavy machine such as a large crane is used to remove the roof a first, and the roof a is relocated to another. After cutting side plates (b1) ... (b2) and the upper side plates in order and removing the side plates at the bottom, the new side plates are repaired from the bottom to the upper one and then the roof is relocated and restored. Alternatively, as shown in FIG. 9, a supporting convex piece (d) is welded and fixed around the upper side plate, a jack (c) is set on the convex piece (d) to hold the tank, and the bottom side plate (b1) is cut. Then, the jacks (c) are uniformly lowered, and the side plates (b2) of the second stage are cut and pulled away. There is a method in which the above work is sequentially repeated to remove the uppermost side plate, then the uppermost side plate is repaired to a new side plate, and conversely, the jack (c) raises the side plates one by one to repair the lower side plate.

(3) Problems to be solved by the invention However, in the former method using heavy equipment such as a large crane,
It requires a large area for roof relocation and crane installation, and it is difficult to apply it to the repair of large tanks. Also, the latter jack method requires sufficient internal reinforcement, which results in huge costs. In addition, the height of the jack is limited, the repair procedure is complicated, and the construction period is long.

Therefore, it is an object of the present invention to provide a supporting device for repair, which can easily repair the side plate even in a small space regardless of the size of the tank, shortens the construction period, and has high safety. .

(4) Means for Solving the Problems In order to achieve this object, the present invention provides a U-shaped stop plate that is welded to a side plate of a tank at the tip of a substrate, a column provided upright on the substrate, and surrounding the column. And a wedge body inserted between the stop plate and the column.

(5) Action The columns having the substrate in the tank are erected at equal intervals close to the side plates, and the stop plates are surrounded by the columns so that the ends of the step plates of the side plate are surrounded by the stoppers. Weld to the upper and lower two places, insert a wedge between the stop plate and the support to fix the side plate and the support, and cut the side plate sequentially from the lower part to the upper part to form a new side plate. Fix and repair. Therefore, the repair is possible without requiring a large space or place for the repair.

(6) Example One example of the strut device of the present invention will be described with reference to FIGS. 1 and 2.

(1) is a substrate, (2) is a pillar made of H-shaped steel standing on the upper surface of the substrate (1), (3) is a stopper, and the stopper (3) is a U-shaped steel plate stopper. Plate (3a) and wedge (3b)
Consists of.

Next, the repair of the side plate of the storage tank using the above-mentioned support device will be described.

First, a required number of columns (2) having a substrate (1) are put into the tank through a manhole or the like of the tank, and then the columns (2) are erected at equal intervals close to the side plates (4) of the tank. After that, each stop plate (3a) is welded to two upper and lower portions of each step of the side plate (4) at the tip of the stop plate (3a) so as to surround each strut (2), and the stop plate (3a) is further welded. A wedge body (3b) is inserted between the column and the column (2) to fix the side plate (4) and the column (2) as shown in FIGS. 1 and 2.

Next, in FIG. 3, the lowermost side plate portion (4a
a) (4bb) and (4cc) are cut a little larger than the side plate part to be newly installed as shown by the broken line, and then withdrawn, and the new side plate parts (4a) and (4b) are assembled. 4th when assembling work
As shown in FIG. 5 and FIG. 5, between the side plate parts using the rectangular contact plates (5a) (5b) having the same curvature as the inner diameter of the tank, the stop plate (3a) and the wedge body (3b). To match the skin
Join and weld the side plates.

Next, the side plate portion (4dd) is cut and removed, and the new side plate portion (4dd)
After assembling and joining c), the pieces are removed one by one and assembled again to finish the repair of the bottom side plate. After the second step, two side plates will be cut and removed, one new side plate will be assembled, and repairs will be carried out one by one in advance. If necessary, 2
You may repair more than one sheet.

In order to facilitate the removal of the side plate and the assembly of the new side plate, as shown in FIG. 6, L is attached to the upper end of the side plate (4) of the tank.
An annular rail (6b) is fixed via a supporting arm (6a) ... (6a) having a shape, and a chain block or the like is hung on the rail (6b) and the side plate portion is pulled out and provided for assembly.

Further, for reinforcement and safety of the tank, stoppers (7) shown in FIG. 7 are provided on each of the columns (2) to prevent the side plate (4) from falling.

(6) Effects of the Invention As described above, according to the strut device of the present invention, the strut is erected in the tank, and the strut and the side plate to be rehabilitated are fixed by the stop plate and the wedge body at appropriate intervals, and It is possible to repair sequentially from the lowermost side plate part to the upper side plate part, thus not requiring a wide space or place for repair,
There is no limitation on the size of the tank, and any tank can be refurbished, and the construction period can be shortened, and the tank can be refurbished at low cost with high safety.

[Brief description of drawings]

FIG. 1 is a perspective view showing a support device of the present invention, FIG. 2 is an enlarged perspective view showing details of a holding fixture, FIG. 3 is a perspective view for explaining a repairing method, and FIG. FIG. 5 is a sectional view taken along the line V-V of FIG. 6, FIG. 6 is a sectional view of a suspending support arm such as a chain block, and FIG. 7 is a perspective view showing a stopper. FIG. 9 and FIG. 9 are front views showing a conventional method. (1) …… Substrate, (2) …… Post (3) …… Stopper

Claims (1)

[Claims] 1. A substrate, a pillar standing upright on the substrate, a U-shaped stopper plate surrounding the pillar and welded to a side plate of a tank at a tip, and a wedge body inserted between the stopper plate and the pillar. A support column device for repairing a side plate of a storage tank, which comprises: