JPS5824900A - Pipe through block - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe penetration block used for providing penetration holes for various measurements in a concrete wall that shields radiation scarlet.

Concrete walls installed to shield radiation,
When piping penetrates the floor or ceiling V, radiation must not leak from the gap between the penetrating object and the concrete. Even if there is a leak, it is necessary to keep the dose below safe for the human body. In other words, in order to suppress leprosy to a minimum, the critical issue is how to structure the product.

The present invention aims to provide a pipe penetration block that solves this problem.

That is, the present invention provides a radiation-shielding concrete]-17
A block that allows pipes to pass through the block, in which a plurality of curved pipes with curved parts for radiation attenuation are housed together in a box with a welded structure, and a radiation shielding material such as lead is placed in the gap between the curved pipes and the box. The piping penetration block is characterized by being filled with material.

According to an embodiment of the present invention, a box for the welding area having the same width as the thickness of the concrete wall, floor, or ceiling provided for shielding is manufactured, and normal radiation shielding calculations are performed in this box to determine the shape and gap. The structure is such that multiple blood vessels with determined values are inserted and taken out at both ends of the box. This box is then filled with a radiation shielding material such as lead as a shield and hardened. Compared to the conventional case where the pipe is directly buried in concrete IJ+, the shielding effect of radiation attenuating materials such as lead is about three times better than that of concrete, so the shielding effect can be increased several times.

Note that since radiation has the characteristic of traveling in a straight line, the box is stepped and has a structure in which a shielding object is always present in the straight direction, so that the shielding effect can be further improved.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to accompanying drawings.

Figures 1 to 5 show a first embodiment of a horizontally mounted pipe penetration block. End plate 2 is shielding concrete)W
on both ends of the box with a span equal to the thickness of the box. In addition, the outer shell plates 4 and 5 constitute a box with a stepped structure, with a partition plate 3 in between. A pipe J to be passed through this is bent as shown in FIG. 3 and is attached by fillet welding to the end plate 2 when the box is assembled. Therefore, before assembling the end plate 2 and the partition plate 3 with holes through which the pipe can pass, the L! I] Kete (.

Although the partition plate 3 and the pipe are not welded together, they serve as a guide for the pipe passing through it and as an intermediate support point for the pipe.

The outer shell plates 4 and 5 are shown in FIGS. 4 and 5 (in this embodiment, U
However, when it is embedded in a concrete wall, it will be at a low point, so the concrete will flow into this box, and after filling the box with radiation shielding material 8 such as lead, allowing it to cool and harden, the cover plate 6 can be removed. It doesn't matter if there is no lid. For installation, the piping penetration block manufactured in this manner has stud bolts 7 attached to the outside of the box at several locations to ensure close contact with concrete. In addition, a lifting hook is attached to the soil part of the partition plate 3.
It is convenient to have a hole for this purpose.

The second embodiment shown in FIGS. 6-10 is a vertically mounted type of piping block, and parts that are the same or similar to the first embodiment are designated by the same reference numerals.

The noteworthy point in this embodiment is shown in FIG. , and the outer shell 4.5 is not U-shaped but flat (see Figures 7 and 9).As for functions, all points other than vertical mounting are the same as in the first embodiment. It's the same.

The effects of the blocks of the present invention are listed below.

(b) Radiation leakage can be reduced several times by passing multiple curved pipes together into a box filled with radiation shielding material such as lead as in the present invention, rather than directly embedding the pipes in shielding concrete. can.

(b) Since radiation travels in a straight line, the structure of the penetrating object can be modified according to the present invention. By filling the radiation shielding material with the radiation shielding material, the radiation shielding effect can be further enhanced.

(c) Directly embedding a bare pipe in concrete may not necessarily damage the pipe surface, so the method of burying the pipe in a box as in the present invention is far superior in terms of quality.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line 1--1 of FIG. 3, FIG. The figure is a sectional view taken along the line ■-■ in FIG. 3, FIG. 5 is a sectional view taken along the line v-V in FIG. 3, and FIG. Figure 7 is a horizontal sectional view thereof, Figure 8 is a vertical sectional view thereof, Figure 9 is a sectional view along line N-N in Figure S, and Figure 10 is the X = X a VCG in Figure 8.
5 is a sectional view. 1...Pipe, 2...End plate, 3...Partition plate, 4...Outer shell, 6
・・Lid plate, 7 bone/stud pole), 8- Radiation shielding materials such as lead. Figure 1 Figure 7 Flash Figure 9

Claims (1)

[Claims] Concrete to shield radiation 1/A block that allows a tube to pass through the wall, and a song for radiation attenuation &! A lead-filled piping penetration block characterized in that a plurality of curved pipes having a radius are housed together in a box with a welded structure, and the gap between the curved pipes and the box is filled with a radiation shielding material such as lead. .