JPH0725354Y2 - Long unit panel - Google Patents

Description

[Detailed Description of the Invention] << Industrial Application Field >> The present invention relates to a long unit panel which is a prefabricated tank mainly for water tanks, has a high water-sealing performance, and can be easily attached with a special piping member. Is.

<< Prior Art >> This type of long unit panel needs to have a flat portion for mounting a piping member. By the way, when the flat surface portion to which the piping member is attached is bent by water pressure, an unreasonable force is applied to the piping member and the periphery where the piping member is attached,
Therefore, it is necessary to reduce the deflection due to this water pressure. Therefore, in the conventional long unit body panel, as shown in FIGS. 6 to 8, the joining edge 2 is provided around the rectangular pressure receiving surface 1 and two upper and lower portions on the center line in the longitudinal direction of the pressure receiving surface 1 are flat. The portion 3 has a substantially mountain-like shape in the range from the center in the lateral direction to the upper and lower ends up and down, and has a substantially mountain-like shape. A smooth curved surface is connected, and a plurality of strip-shaped thick portions, that is, strip-shaped ribs 4 are provided in the lateral direction in the vicinity of the central portion, and a structure is adopted that reduces the deflection of each pressure receiving surface part and especially the flat part. Was there.

<< Problems to be Solved by the Invention >> However, such a conventional long unit panel having a substantially central shape has the following problems.

(1) The substantially mountain shape of the pressure-receiving surface 1 has a larger curvature as it moves away from the center line in the longitudinal direction to the left and right, and approaches a flat surface, reducing the effect of reducing deflection. For this reason, the plane portion 3 for mounting the piping member is provided only at two upper and lower positions on the center line in the longitudinal direction.

(2) The larger the flat surface portion 3 on which the piping member is mounted, the more freedom in selecting the piping member to be mounted. However, the deflection of the flat portion 3 due to water pressure increases as the flat surface 3 increases,
Therefore, in the long unit body panel in which the pressure receiving surface 1 has a substantially mountain shape, the size of the flat portion 3 is the maximum of the pipe flange φ.
You can practically secure up to the size that can mount 150 things.

(3) Deflection due to water pressure at the central portion of the pressure receiving surface 1 is deeply related to the shape near the center line in the longitudinal direction and the lateral direction. With the shape provided with 3, the curved surface portion is reduced on the center line in the longitudinal direction, and the deflection due to water pressure becomes large. Therefore, it is necessary to provide a strip-shaped rib in the lateral direction near the center,
There was a problem that the material and weight increased.

Further, since the deflection is large, (4) it was necessary to make the packing inserted between the joint edges thick so as to follow the deflection.

(5) It was necessary to increase the strength of the reinforcement to be attached in order to reduce the bending of the joint edge.

<Means for Solving the Problems> The present invention has been made in view of the above problems, and the present invention relates to a long unit body panel in which a joining edge is provided around a rectangular pressure receiving surface. The central part projects in a substantially cylindrical shape from the flat part, and the upper part and the lower part project in the same shape as the substantially cylindrical shape in a range of a predetermined width or more on the center line in the longitudinal direction. Connect the ends,
It is characterized in that the four corners of the pressure receiving surface are arc-shaped flat portions.

<Operation> In the present invention, the effect of reducing the deflection due to the difference in the shape of the pressure receiving surface was determined by structural analysis and experiments, and it was found that the central portion of the pressure receiving surface has a substantially cylindrical shape, that is, a curvature in the longitudinal direction of the pressure receiving surface. It was found that the effect of reducing the flexure is not diminished even if it is separated from the center in the longitudinal direction to the left and right by always providing the same curvature in the short-side direction without having the curve.

Further, in order to reduce the deflection, it is advantageous to have less flat portions near the center lines in the longitudinal direction and the transverse direction, so that the upper and lower portions of the pressure receiving surface have a width of about 50 on the center line in the longitudinal direction.
It was projected in the same direction as the substantially cylindrical shape in the range of mm or more, and its end was connected to the end of the substantially cylindrical shape. That is, by making the central portion of the pressure receiving surface into a substantially cylindrical shape, the deflection of each portion of the pressure receiving surface is reduced and the flat portion can be made larger than in the conventional case. Also, about 50 mm on the longitudinal centerline
By projecting in the same direction as the substantially cylindrical shape within the above range, the four corners of the pressure receiving surface can be made into arc-shaped flat parts, and more than one strip-shaped rib was required near the center in the lateral direction. Is no longer needed.

<< Embodiment >> An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a front view of a long unit body panel according to the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is a sectional view taken along the line BB of FIG. The same members as those in the conventional example are designated by the same reference numerals, and detailed description thereof will be omitted.

The present invention relates to a long unit panel having a rectangular pressure receiving surface 1 and a bonding edge 2 provided around the square pressure receiving surface 1. The center of the pressure receiving surface 1 extends vertically from the center line in the lateral direction to the upper and lower ends, respectively. Approximately three quarters have a substantially cylindrical shape 5 (1 in FIG. 1 is a cylindrical shape range), and the upper and lower portions of the pressure receiving surface 1 are substantially cylindrical within a range of about 100 mm or more on the longitudinal centerline. It is formed in a shape in which it projects in the same direction as the shape 5, and its end is connected to the end of the substantially cylindrical shape 5 with smooth curved surfaces, and arc-shaped flat parts 3 are formed at the four corners of the pressure receiving surface 1. ing.

Another embodiment of the present invention will be described with reference to FIGS. 4 and 5.

The structure shown in FIG. 4 eliminates the corners of the pressure receiving surface shape in FIG. 1 in order to relieve the concentration of stress due to water pressure, and also facilitates the fastening of the joint edges 2 at the time of tank assembly. Flat parts 3 are provided at the four corners along the periphery of the face 1, and in order to reduce the flexure of the lower part where water pressure is particularly high, the lower flat part 3 is formed into a size that allows the pipe flange φ200 to be attached. ing.

As shown in FIG. 5, the substantially cylindrical portion 5 has a range 1 about 2/5 of the length from the center in the lateral direction to the upper end in the upward direction and about 1/2 of the length to the lower end in the downward direction. In addition, the connection with the projecting portion on the center line in the longitudinal direction is further smoothed so as to avoid stress concentration as much as possible, and the arc-shaped flat surface portions 3 are formed at the four corners of the pressure receiving surface 1. Has been done.

<< Advantages of the Invention >> Since the present invention has the above-mentioned configuration, the deflection of each part of the pressure receiving surface, particularly the flat surface part is reduced as compared with the conventional one, and the following effects are obtained.

(1) It is possible to provide four flat portions on which the piping members can be attached.

(2) The diameter of the piping flange attached to the flat surface can be up to φ200.

(3) The strip-shaped ribs provided in the widthwise direction in the vicinity of the central portion are not necessary, and the material cost can be saved and the weight can be reduced, so that the assembling workability is improved.

(4) The packing required for tank assembly can be made thinner,
Material cost can be saved.

(5) Since the strength of the reinforcement required for assembling the tank can be made lower than before, the weight can be reduced and the material cost can be saved.

[Brief description of drawings]

FIG. 1 is a front view of a long unit body panel according to the present invention, and FIG.
1 is a sectional view taken along the line AA in FIG. 1, FIG. 3 is a sectional view taken along the line BB in FIG. 1, and FIGS. 4 and 5 are front views showing another embodiment of a long unit panel according to the present invention. FIG. 6 is a front view of a conventional long unit panel, FIG. 7 is a sectional view taken along the line AA of FIG. 6,
FIG. 8 is a sectional view taken along line BB in FIG. DESCRIPTION OF SYMBOLS 1 ... Pressure receiving surface 2 ... Joining edge 3 ... Flat surface portion 5 ... Substantially cylindrical portion 1 ... Cylindrical shape range

Claims (1)

[Scope of utility model registration request] 1. In an elongated body panel in which a joining edge is provided around a rectangular pressure receiving surface, a central portion of the pressure receiving surface projects in a substantially cylindrical shape from a flat portion, and an upper portion and a lower portion are predetermined on a center line in a longitudinal direction. In addition to projecting in the same shape as the substantially cylindrical shape in the range of width or more, connecting the end of the above-mentioned plane portion and the end of the substantially cylindrical shape, the four corners of the pressure receiving surface are arc-shaped plane portions. Isometric unit panel.