JPH0684400U - Radiation irradiation device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a radiation irradiation apparatus capable of reducing a radiation controlled area and excellent in handleability and operability. A storage container (10) including a radiation shield (11) and a lid (12), a radiation irradiator (13) installed at an opening of the radiation shield opened and closed by the lid, and a radiation irradiator. And a lid opening / closing means (16) provided between the lid and the lid to open / close the lid, and by opening the lid of the storage container by the lid opening / closing means, the radiation irradiator is exposed while being incorporated in the storage container. Radiation can be emitted from the radiation irradiation unit.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a radiation irradiator used when a radiation transmission test is performed on piping.

[0002]

[Prior art]

 Conventionally, as shown in FIG. 5, a radiation irradiator used to perform a radiation transmission test includes a radiation irradiator 1 for irradiating radiation and a storage container 2 for storing a radiation source, which are connected to each other by a transmission tube 3. The control panel 4 is connected to the storage container 2.

At the time of the radiation transmission test, the radiation irradiator 1 is arranged in the vicinity of, for example, the pipe 5 to be tested, and the film 6 and the bag are provided on the opposite side of the radiation irradiator 1 with the pipe 5 interposed therebetween. The plate 7 is arranged, and the radiation source such as 192 Ir stored in the storage container 2 is transferred to the radiation irradiator 1 by operating the control panel 4, and radiation such as gamma rays is directed from the radiation irradiator 1 to the pipe 5. As a result, the predetermined transmission test is performed.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional radiation irradiating apparatus, the radiation irradiator 1 and the storage container 2 are separately provided, and the radiation irradiator 1 and the storage container 2 are separately disposed near the test object during the radiation transmission test. Therefore, the radiation irradiator 1, the containment vessel 2, and the transmission pipe 3 which have a possibility of radiation leakage are arranged with a distance, and there is a drawback that the radiation controlled area Z is spread over a wide range. In addition, when performing the radiation transmission test, it is necessary to transfer the radiation source from the radiation irradiator 1 to the storage container 2 as described above, and there is a drawback that handling and operability are poor.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a radiation irradiation apparatus that can reduce a radiation control area and is excellent in handleability and operability. To provide.

[0006]

[Means for Solving the Problems]

 In order to achieve such an object, in the device according to claim 1, a storage container including a radiation shield and a lid, and a state in which the radiation irradiator is exposed from a portion of the radiation shield that is closed by the lid. The radiation irradiator incorporated in the radiation shield part and a lid opening / closing means provided between the radiation shield part and the lid for opening and closing the lid.

According to the second aspect of the invention, a storage container having a radiation irradiation window, a radiation irradiator provided movably in the storage container and having a radiation irradiating unit, and the storage container are provided. And a radiation irradiator moving means for moving the radiation irradiator so that the radiation irradiator is overlapped with the radiation irradiating window of the storage container.

[0008]

[Action]

 In the radiation irradiating apparatus according to the invention as set forth in claim 1, when performing a radiation transmission test, the radiation irradiating apparatus is arranged in the vicinity of the test object, the lid of the storage container is opened by the lid opening / closing means, and the radiation irradiating apparatus is incorporated into the storage container. A radiation transmission test is performed by irradiating the test object with radiation from the existing radiation irradiator. In this way, even when conducting a radiation transmission test, the containment vessel and the radiation irradiator are integrated, so the radiation control area should be reduced compared to the conventional arrangement where they are separated. You can In addition, since the radiation irradiator is still incorporated in the storage container, there is no need to take it in and out, so that handling and operability can be improved.

In the radiation irradiating apparatus according to the second aspect of the invention, when performing a radiation transmission test, the radiation irradiating apparatus is arranged in the vicinity of the test object, and the radiation irradiating unit is moved by the radiation irradiating unit moving means. Move the inside of the storage container so that the radiation irradiation part of the radiation irradiation device matches the irradiation window of the storage container. In this state, when radiation is emitted from the radiation irradiating section of the radiation irradiator, the irradiated radiation irradiates the test object through the radiation irradiating window of the storage container. As described above, also in the radiation irradiating device, since the storage container and the radiation irradiating device are integrated, the radiation control area is reduced similarly to the radiation irradiating device according to the above-mentioned invention. Can be made.

[00010]

【Example】

 First Embodiment FIGS. 1 and 2 show a first embodiment of the present invention. In the drawings, reference numeral 10 is a storage container including a radiation shield 11 and a lid 12, and 13 is a hole 11a of the radiation shield 11. It is a radiation irradiator that is assembled and fixed by a bolt 14.

On the upper part of the storage container 10, there are provided radiation shields 11 and support guides 15, 15 which lie on the lid 12 in parallel with each other with a space left and right, so that the lid 12 is in an open state. Even at a certain time, a fixed posture is maintained with respect to the radiation shielding unit 11. Reference numeral 16 denotes an air cylinder housed in the hole 17 of the radiation shielding unit 11, and a piston rod 16a extending from the air cylinder 16 is bolted to the lid 12. That is, the air cylinder 16 constitutes a lid opening / closing means for opening / closing the lid 12. A concave portion 12a is formed on the radiation shielding portion side of the lid 12 to cover the protruding portion of the radiation irradiator 13 when closed.

The radiation irradiator 13 is provided with a radiation source 3a at a front portion thereof, and the radiation source 13a is provided in the hole 11a so that the radiation source 13a is exposed to the outside from a portion 11b closed by the lid 12 of the radiation blocking unit 11. It is fitted. A control device 18 operates the air cylinder 16 and the like.

When performing a radiation transmission test using the radiation irradiation apparatus configured as described above, the radiation irradiation apparatus is arranged so as to face a test object (not shown), and the air cylinder 16 is extended and stored. Open the lid 12 of the container 10. In the radiation irradiator 13 incorporated in the radiation shielding unit 11, the radiation source 13a is exposed by opening the lid 12, and the radiation is radiated from the radiation source 13a toward the test object. As described above, even when the radiation transmission test is performed, the containment vessel 10 and the radiation irradiator 13 are integrated, so that the radiation control area is different from the conventional one in which they are arranged separately. Can be reduced. After the radiation transmission test, if the air cylinder 16 is shortened and the lid 12 is closed, the radiation source 13a will be covered by the lid 12, and the radiation will not leak to the outside.

Further, the radiation irradiator 13 is still incorporated in the radiation shielding unit 11 even when performing a radiation transmission test, and it is not necessary to take it in and out of the radiation shielding unit 11, and Since the transmission pipe connecting to the storage container 10 can be omitted, handling and operability are improved.

Second Embodiment FIGS. 3 and 4 show a second embodiment of the present invention. In the figure, reference numeral 21 is a storage container, 22 is a radiation irradiator movably provided in the storage container 21 via a bearing 25, and 23 is a radiation irradiator moving means for moving the radiation irradiator 22.

A hollow portion 24 having a substantially L-shaped cross section is formed inside the storage container 21 along the length direction, and the radiation irradiator 22 is moved to one side (left side in FIG. 4) of the hollow portion 24. It is provided freely. A radiation irradiation window 21a is formed on the lower surface of the storage container 21 and communicates with the hollow portion 24 and gradually expands downward.

The radiation irradiator 22 is formed to have a T-shaped cross section so as to be movably accommodated in one side of the hollow portion 24 of the storage container 21, a rack portion 27 is provided on the side portion thereof, and a lower surface thereof is provided. A radiation source 28 is provided in the.

A motor 30 is provided below the right side portion of the hollow portion 24 of the storage container 21 in FIG. 4, and a pinion 31 is attached to the output shaft of the motor 30. The pinion 31 meshes with a rack 27 provided on the side of the radiation irradiator 22. That is, the motor 30, the pinion 31 and the rack 27 constitute the radiation irradiator moving means 23.

The radiation irradiator moving means 23 is provided with a stopper (not shown), and the radiation irradiator 22 moved leftward in FIG. 3 is positioned at a predetermined position with respect to the storage container 21 by this stopper. The radiation source 28 of the radiation irradiator 22 overlaps the radiation irradiation window 21a of the storage container 21 as shown in FIG. Reference numeral 33 is a pipe to be tested, 34 is a lead back plate, and 35 is a film placed on the upper surface of the back plate 34.

When a radiation transmission test is carried out by the radiation irradiation apparatus of this configuration, the radiation irradiation apparatus is placed above the pipe 33, which is the test object, and the radiation irradiation window 21 a sandwiches the pipe 33 so that the back plate 34 is provided. Place it so that it is directly above. Then, the motor 30 is driven to move the radiation irradiator 22 stored in the back in advance through the rack 27 and the pinion 31 to the front side (left side in FIG. 3) as shown by the chain double-dashed line in FIG. Then, the radiation source 28, which is the radiation irradiating portion of the radiation irradiator 22, is matched with the radiation irradiation window 21 a of the storage container 21.

In this state, the radiation emitted from the radiation source 28 of the radiation irradiator 22 hits the pipe 33 through the radiation irradiation window 21a, further penetrates the pipe 33 and hits the film 35, and a predetermined transmission test is performed. To be done. After the transmission test, if the motor 30 is driven and the radiation irradiator 22 is moved inward, the radiation source 28 is displaced from the radiation irradiation window 21a and is not exposed to the outside, so that the radiation does not leak.

Also in the radiation irradiating device of the second embodiment, since the storage container 21 and the radiation irradiator 22 are integrated, as in the radiation irradiating device of the above-mentioned first embodiment, the radiation control area is provided. Can be reduced.

In the second embodiment, the motor 30, the pinion 31 provided on the output shaft of the motor 30, and the rack 27 constitute the radiation irradiator moving means 23 for moving the radiation irradiator 22. However, the present invention is not limited to this, and the radiation irradiator moving means 23 using other moving means such as a hydraulic cylinder or an air cylinder may be configured.

[0024]

[Effect of device]

 As described above, according to the present invention, the radiation control area can be reduced as compared with the conventional one because the storage container and the radiation irradiator are integrated even when performing a radiation transmission test. In addition, the radiation irradiator is still incorporated in the containment vessel, so there is no need to take it in and out, and the transmission pipe interposed between the containment vessel and the radiation irradiator is no longer necessary, so handling and operation are easy. It has excellent effects such as improvement of productivity.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a first embodiment of the present invention.

FIG. 2 is a view on arrow X in FIG.

FIG. 3 is a perspective view showing a second embodiment of the present invention.

FIG. 4 is a sectional view taken along the line YY of FIG.

FIG. 5 is a schematic view showing a conventional example.

[Explanation of symbols]

 10 Storage Container 11 Radiation Shielding Part 12 Lid 13 Radiation Irradiator 13a Radiation Source 16 Lid Opening / Closing Means (Air Cylinder) 21 Storage Container 21a Radiation Irradiation Window 22 Radiation Irradiator 28 Radiation Source 23 Radiation Irradiator Moving Means

Claims (2)

[Scope of utility model registration request] 1. A storage container comprising a radiation shielding part and a lid, a radiation irradiator installed at an opening of the radiation shielding part opened and closed by the lid, and between the radiation irradiating part and the lid. A radiation irradiating device, comprising: a lid opening / closing means which is provided to open / close the lid. 2. A storage container having a radiation irradiation window,
A radiation irradiator provided movably in the storage container;
A radiation irradiating device, comprising: a radiation irradiator moving means for moving the radiation irradiator so that the radiation irradiating section provided in the storage container overlaps with a radiation irradiation window of the storage container.