KR20090050375A - Knockdown building for blocking radiation - Google Patents

Abstract

An object of the present invention is to provide a prefabricated radiation shielding building capable of assembling installation, dismantling movement, and at the same time effectively shielding radiation. To this end, in the present invention, an accelerator installation unit that is installed an accelerator for generating radiation therein; A detector disposed to face the accelerator at intervals; A passage part formed in a direction crossing the direction in which the accelerator mounting part and the detection part face each other; And a cover part blocking an upper side over an upper part of the accelerator mounting part and an upper part of the detection part detection part, wherein the accelerator installation part, the detection part, the passage part, and the cover part are each assembled by a wall panel to be separated by wall panels. Provide a radiation shielded building.

Description

Knockdown building for blocking radiation

The present invention relates to a radiation shielded building used in container cargo retrieval equipment, and more specifically to projecting X-rays to containers used for the transportation of import and export cargo to detect smuggling or other contents different from the smuggled cargo in high density container cargo. The present invention relates to a radiation shielded building that can be used for X-ray cargo retrieval equipment used to prevent leakage of radiation to the outside and at the same time to be assembled, installed and dismantled.

In general, devices that generate radiation during operation are used in many applications. Among them, nuclear power plants, medical devices using radiation, and non-destructive inspection devices using radiation continuously leak radiation during use. Radiation generated when projecting X-rays is very harmful to the human body and when exposed to radiation for a certain time, it causes genetic or cellular transformation of the human body, causing various diseases such as leukemia and cancer. These diseases are not only seen in one generation, but are likely to cause genetic variation in later generations. In order to reduce the risk of disease from exposure to radiation, facilities that block radiation must be used together.

On the other hand, the container cargo retrieval equipment using the X-ray to which the present invention is concerned, when the operator operates the equipment as necessary, when power is applied, radiation according to the X-ray is generated accordingly. As such, a shielded building is used as a facility for shielding radiation of an apparatus that generates radiation intermittently. In order to inspect dense cargo, it may be desirable to make and use thick-walled shielded buildings for effective shielding of radiation. However, when moving the shielded building once installed to another place, it is practically difficult to use a shielded building having a thick wall, and there is a problem in that the existing shielded building must be demolished and a new shielded building must be constructed. In this case, a large amount of industrial building waste may be generated in existing buildings, which may cause environmental pollution.

Therefore, there is a great need to provide a radiation shielded building that can solve a problem caused by leakage of radiation while performing a reading task by irradiating a sufficient amount of X-rays. In particular, there is a great need to provide X-ray shielded buildings that can be relocated and relocated while reducing industrial waste.

The present invention is to solve the above problems, an object of the present invention is to provide a prefabricated radiation shielding building capable of assembling installation, dismantling movement, and can effectively shield radiation.

An object of the present invention as described above, the accelerator installation unit is provided with an accelerator for generating radiation therein;

A detector disposed to face the accelerator at intervals;

A passage part formed in a direction crossing the direction in which the accelerator mounting part and the detection part face each other; And

Prefabricated radiation that includes a cover for blocking the upper side over the upper portion of the accelerator mounting portion and the upper portion of the detector detecting portion, wherein the accelerator mounting portion, the detection portion, the passage portion and the cover portion are each connected to the wall panel, the separation of the prefabricated radiation by the wall panel By providing a shielded building.

Here, the thickness of the wall panel of the accelerator mounting portion and the detection portion is preferably thicker than the wall thickness of the passage portion and the cover portion.

Here, it is preferable that the thickness of the wall panel of the portion adjacent to the accelerator mounting portion and the detection portion is the thickest.

Here, the passage portion is composed of a plurality of wall panels of different thicknesses, the wall panel is the thickest wall panel located in the portion adjacent to the accelerator mounting portion and the detection portion, the thickness toward the outer portion It is preferred that the thin wall panels are arranged sequentially according to the thickness.

Here, the wall panels are preferably made of a steel plate on the surface and the concrete inside.

The prefabricated radiation shielded building according to the present invention can greatly enhance the safety and convenience of the operator and the read operation by projecting sufficient X-rays to perform a search operation. In addition, it helps to prevent environmental pollution by significantly reducing the amount of industrial building waste generated by the dismantling and moving of shielded buildings during the relocation of screening facilities, and it is also cost effective. In addition, the time taken to dismantle, move, and assemble after commissioning is greatly reduced by significantly reducing the time taken to manufacture a new shielded building, which enables quick commissioning and, above all, contributes to a smooth logistics flow by not blocking the flow of container cargo. .

1 shows a perspective view of a prefabricated radiation shielded building according to the invention, and FIG. 2 shows a plan view excluding the cover of the shielded building shown in FIG. 1.

As shown in Figures 1 and 2, the prefabricated radiation shielded building according to the present invention has an accelerator installation unit 110, a detection unit 115, a passage portion 120, 125, 130, 140, 145 and a cover portion 150 ).

X-ray generators are installed in the accelerator installation unit 110, and the X-ray generators radiate X-rays toward the detection unit 115.

The detector 115 is installed at a portion opposite to the accelerator mounting unit 110 and is spaced apart from the accelerator mounting unit 110 by a predetermined interval. This interval is the distance that a cargo container vehicle will pass.

The accelerator mounting unit 110 and the detection unit 115 are formed with the thickest wall thickness. This is because the periphery of the accelerator installation unit 110 and the detection unit 115 is where the X-rays directly reach the greatest exposure risk due to radiation, and thus the necessity of shielding the radiation is the greatest.

The passage portion extends laterally at an interval between the accelerator installation unit 110 and the detection unit 115 and forms a passage through which the cargo container vehicle passes. A portion of the passage portion directly connected to the accelerator installation unit 110 or the detection unit 115 has a relatively thick thickness, and is formed thinner as it goes outward. Only the radiation whose intensity is weakened due to reflection, scattering, absorption, etc., does not affect the passage portion unless the portion directly generates or detects the radiation. Therefore, the passage portion is more than the accelerator installing portion 110 or the detecting portion 115. The need for thick thickness is small. On the other hand, when manufacturing a radiation shielded building as a prefabricated dismantling movement and reinstallation should be possible because it is not desirable to excessively large weight of the dismantled part. Therefore, it is desirable to adjust the thickness in accordance with the amount of radiation affects.

Preferably, as shown in the figure, the first passage portion 120 immediately adjacent to the detector 115 has a thinner wall thickness than the detector 115 or the accelerator installation unit 110. The second passage portion 130 adjacent to the first passage portion 120 and the third passage portion 135 adjacent to the accelerator installation portion 110 have a thickness thinner than that of the first passage portion 120. . The fourth passage portion 140 adjacent to the second passage portion 130 and the fifth passage portion 145 adjacent to the third passage portion 135 have the thinnest thickness. The prefabricated radiation shielding building 100 according to the present invention may be made symmetrically with respect to the detector 115 and the accelerator installation unit 110. In case of symmetry, the wall panel of the dismantled passage part is compatible with the left and right, thereby reducing the number of parts required for installation or movement. The detailed thickness values are set to meet these requirements, taking into account the radioactive allowances allowed by the materials used and the area in which they are installed.

The cover part 150 is a part which is installed in connection with the upper part of the accelerator installation part 110 and the upper part of the detection part 115 to shield the radiation. In the past, attempts were made to shield radiation only by thickening the wall thickness of the shielded building, but surprisingly, no matter how thick the wall thickness was, the amount of radiation detected outside the shielded building was not reduced. The reason for this is that among the radiation emitted from the accelerator, the amount of sky shine traveling toward the air due to diffraction reflection, scattering, and other factors is high. It turned out that I could not shield. In order to effectively shield the air radiation, the cover portion 150 is provided in the present invention. In the cover part 150, the wall thickness of the upper part of the detector 115 may be substantially the same as the wall thickness of the detector 115, and the other part may have a thickness corresponding to the thickness of the first passage part.

The accelerator mounting unit 110, the detection unit 115 and the passage portion is provided with a predetermined fixing means at the bottom to support the respective wall panel constituting it. An example of the fixing means may be two L-shaped beams 161a, 162a or 161b, 162b mounted on both sides at the bottom as shown in FIG. In such a case, when the beam is provided by the fixing means, the cross section does not necessarily have to be L-shaped, and may be rectangular, rectangular, or H-shaped. However, in the case of using an L-shaped beam, it is also possible to install the L-shaped bottom portion so as to enter the bottom of the wall (not shown in the drawing). In this case, an L-shaped beam is preferable when the floor portion to which the prefabricated radiation shielded building is fixed and the wall panel do not come into direct contact with each other.

On the other hand, each panel constituting the wall of the radiation shielded building having a structure as described above may be made by filling the concrete between the iron plate.

3 is a cross-sectional view taken along the line III-III of FIG. 1, and FIG. 4 is an enlarged view of the IV portion of FIG. 1.

As shown in FIG. 3, the wall panel includes the iron plate 141 on both sides and the iron plate 144 on the bottom bottom. The space between them is filled with concrete 142. In the construction of a shielded building, it is possible to complete the wall panel of the shielded building by installing the iron plates constituting the wall panel, and using the formwork to cast concrete in the space therebetween. As shown in FIG. 4, concrete is poured after partitioning with the bent iron plate 143 between the portions constituting adjacent wall panels.

The radiation-shielded building manufactured in this way is a part where the steel plates are connected to form the original formwork, for example, by welding or by using a separate connecting member. If the panel is lifted by a crane, each panel can be disassembled. After dismantling, the construction of the shielded building can be completed by moving to a new installation site and installing each panel.

It is of course also possible to produce a prefabricated radiation shielded building according to the invention by means other than the methods described herein. For example, after forming the formwork with iron plate for each separate panel and then cast concrete to cultivate the wall panels by fabricating them is also possible.

According to the present invention, it is possible to effectively block harmful radiation to the human body inevitably generated during the operation of the assembled mobile container cargo retrieval equipment for preventing the safety and diversified national safety and smuggled goods that are diversified and sophisticated due to increased cargo. In addition, the wall thickness is determined according to the amount of radiation so that radiation can be effectively blocked, so that sufficient X-rays can be projected even for high density container cargo to perform a read operation.

In addition, since the structure is easy for dismantling and moving installation, it is possible to perform disassembly and use installation while reducing environmental pollution by minimizing the cost and amount of industrial building waste when dismantling and moving installation is required.

In the following description of the present invention, the embodiments illustrated in the drawings have been described with reference to the embodiments, which are merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. I will understand the point. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1 is a perspective view of a prefabricated radiation shielded building according to the present invention.

FIG. 2 is a plan view excluding a cover part of the shielded building shown in FIG. 1. FIG.

3 is a cross-sectional view taken along the line III-III of FIG.

4 is an enlarged view of portion IV of FIG. 1;

Claims (5)

An accelerator installation unit having an accelerator generating radiation therein; A detector disposed to face the accelerator at intervals; A passage part formed in a direction crossing the direction in which the accelerator mounting part and the detection part face each other; And Prefabricated radiation that includes a cover for blocking the upper side over the upper portion of the accelerator mounting portion and the upper portion of the detector detecting portion, wherein the accelerator mounting portion, the detection portion, the passage portion and the cover portion are each connected to the wall panel, the separation of the prefabricated radiation by the wall panel Shielded building. The method of claim 1, Prefabricated radiation shielding building, characterized in that the thickness of the wall panel of the accelerator mounting portion and the detection portion is thicker than the wall thickness of the passage portion and the cover portion. The method of claim 1, And said passage portion is thickest in thickness of the wall panel of the portion adjacent to said accelerator installation portion and said detection portion. The method of claim 1, The passage portion is composed of a plurality of wall panels of different thicknesses, and the wall panels are thickest wall panels located in the portion adjacent to the accelerator mounting portion and the detection portion, and the wall panels are thinner toward the outer portion. Prefabricated radiation shielded building, characterized in that they are sequentially arranged in accordance with the thickness. The method of claim 1, The wall panel is a prefabricated radiation shielded building, characterized in that made of the surface of the iron plate and the concrete.

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