A portable radiation source irradiation device

Abstract

The utility model discloses a portable radiation source irradiation device belongs to radiation protection and environmental protection technical field for scale, calibration instrument equipment time radiation source use and storage. Portable radiation source irradiation device lead material and outer surface cover a layer 1mm thick stainless steel skin, including the source cover, shielding body, irradiation cover. The operator borrows radiation source, first, put the radiation source into the source cover groove, push into the shielding body and fix with the fixed bolt and fixed screw. After the preparation of test instrument, carry portable radiation source irradiation device to the prebook position and open the irradiation cover, can carry out the irradiation experiment. In the experiment process, the radiation source is fixed in the shielding body, and there are 30mm lead shielding materials above, below, left, right, front and back of the radiation source, and the radiation source and the operator realize physical isolation, reduce the irradiation dose of personnel, reduce the security risk.

Description

Technical Field

[0001] This utility model discloses a portable radiation source irradiation device, belonging to the field of radiation protection and environmental protection technology, for the use and storage of radiation sources when calibrating and measuring instruments and equipment. Background Technology

[0002] During detector development and instrument calibration, researchers borrow radioactive sources from the unit's radioactive source library to conduct irradiation experiments in the laboratory. Throughout the preparation, execution, and conclusion of these experiments, researchers handle and place the radioactive sources while wearing gloves. Especially during the experiments, researchers are often exposed to radiation from the sources, increasing their exposure dose and posing a significant safety hazard. Summary of the Invention

[0003] (a) Purpose of the invention The purpose of this invention is to provide a portable radiation source irradiation device to solve the problem of increased radiation dose to operators of radiation source experiments when exposed to the radiation field. (II) Technical Solution To achieve the above objectives, the technical solution of the present invention is as follows: The portable radiation source irradiation device is made of lead material and its outer surface is covered with a 1mm thick stainless steel sheet. It includes a source cover (4), a shield (5), and an irradiation cover (6). The source cover (4) is connected to the shield (5) by fixing screw a (1), fixing screw b (2), and fixing bolt a (3). The irradiation cover (6) is connected to the shield (5) by fixing screw c (8), fixing screw d (9), and fixing bolt b (7).

[0004] The source cover (4) is a truncated pyramid structure with a groove at the inner end for placing a source box with a diameter of 80mm to accommodate radioactive sources of different sizes and shapes. The shield (5) has a lifting handle at the top and a fixed base at the bottom; The shield (5) has a groove that aligns with the frustum of the source cover (4), ensuring that the radiation source is placed at its geometric center. The shield (5) has a conical exit hole at the end of the irradiation cover (4) for radiation source irradiation; the irradiation cover (6) has a conical protrusion that matches the conical exit hole of the shield (5) to prevent radiation leakage. After borrowing the radiation source, the operator first places the radiation source into the groove of the source cover, pushes it into the shield, and then secures it with a fixing bolt and screw. Once the testing equipment is ready, the portable radiation source irradiation device is moved to the designated position, the irradiation cover is opened, and the irradiation experiment can be carried out.

[0005] (III) Effective Returns Compared with existing radiation source experiments, this invention provides a portable radiation source irradiation device. During the experiment, the radiation source is fixed inside a shielding body, with 30mm of lead shielding material on each side (top, bottom, left, right, front, and back) centered on the radiation source, reducing the radiation dose to personnel and minimizing safety hazards. Attached Figure Description

[0006] Figure 1 Schematic diagram of a portable radiation source irradiation device; Figure 2 Engineering drawings for a portable radiation source irradiation device; Figure 3 A diagram showing all the components of a portable radiation source irradiation device (left view). Figure 4 A diagram showing all the components of a portable radiation source irradiation device (right view). In the diagram: 1. Fixing screw a, 2. Fixing screw b, 3. Fixing bolt a, 4. Source cover, 5. Shielding body, 6. Irradiation cover, 7. Fixing bolt b, 8. Fixing screw c, 9. Fixing screw d. Detailed Implementation

[0007] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0008] Example 1 The portable radiation source irradiation device is made of lead material and covered with a 1mm thick stainless steel sheet on the outer surface. It includes a source cover (4), a shield (5), and an irradiation cover (6). After borrowing the radiation source, the operator first places the radiation source into the groove of the source cover, pushes it into the shield, and then secures it with a fixing bolt and screw. Once the testing equipment is ready, the portable radiation source irradiation device is moved to the designated location, the irradiation cover is opened, and the irradiation experiment can be carried out. Personnel from this unit wish to borrow 1Ci... 60 To test the detector performance of a Co-type radioactive source, after borrowing the source, the operator first opens the source cover, places the radioactive source into the groove of the source cover, and then pushes it into the shielding enclosure for fixation. The operator then moves the portable radioactive source irradiation device to the laboratory. After completing the test preparations, the device is placed in the designated position, the irradiation cover is opened, and the irradiation experiment is conducted. After the experiment is completed, the irradiation cover is pushed into the shielding enclosure and fixed. In this process, the portable radioactive source irradiation device physically isolates the radioactive source from the operator, reducing the radiation dose received by the personnel.

Claims

1. A portable radiation source irradiation device, characterized in that: Includes source cover (4), shield (5), and irradiation cover (6); The source cover (4) is connected to the shield (5) by fixing screw a (1), fixing screw b (2), and fixing bolt a (3), and the irradiation cover (6) is connected to the shield (5) by fixing screw c (8), fixing screw d (9), and fixing bolt b (7); The source cover (4) is a truncated pyramid structure with a groove at the inner end for placing a source box with a diameter of 80mm to accommodate radioactive sources of different sizes and shapes. The shield (5) has a lifting handle at the top and a fixed base at the bottom; the shield (5) has a groove at the source cover (4) end that meets its truncated pyramid to ensure that the radiation source is placed at its geometric center. The shield (5) has a tapered exit hole at the end of the irradiation cover (6) for irradiation by the radiation source; The irradiation cover (6) has a conical protrusion that matches the conical emission port of the shield (5) to prevent radiation leakage.

2. The portable radiation source irradiation device according to claim 1, characterized in that: The portable radiation source irradiation device is made entirely of lead and its outer surface is covered with a 1mm thick stainless steel sheet.

Images