Single-source irradiation device capable of realizing double-source function

Abstract

The utility model provides a single-source irradiation device capable of realizing a double-source function, and the device comprises an output device body which is provided with a ray output channel; the source rotating rod can be inserted into the output device body, and a first ray outlet and a second ray outlet are formed in the opposite sides of the center position of the source rotating rod respectively; and the source rotating rod can rotate relative to the output device body, so that the first ray outlet is aligned with the ray output channel, or the second ray outlet is aligned with the ray output channel. By adopting the single-source irradiation device capable of realizing the double-source function provided by the utility model, the number of calibration points of a gamma-ray reference radiation field can be increased, so that a basis is provided for maximum utilization of gamma-ray reference radiation field energy.

Description

Technical Field

[0001] This invention relates to a gamma-ray reference radiation field, and more particularly to a single-source irradiation device capable of achieving dual-source functionality. Background Technology

[0002] A gamma-ray reference radiation field is used for the calibration of radiation protection dose and dose rate meters, the calibration of personal dosimeters, and the determination of the energy response of dosimeters and dose rate meters. It plays an extremely important role in accurately quantifying the ionizing radiation exposure received by radiation workers and the public, and correctly evaluating the human body effects. Therefore, establishing a gamma-ray reference radiation field is of great significance for the safe conduct of radiation work.

[0003] The gamma-ray reference radiation field mainly consists of a radiation source irradiation device, a track positioning system and integrated control system, an intelligent vehicle positioning device, safety interlocks, and video monitoring devices. Among these, the radiation source irradiation device is divided into single-source and multi-source devices, depending on the application requirements.

[0004] Currently, for gamma-ray reference radiation fields of single-source irradiation devices, considering factors such as scattering and accuracy, the distance between the radiation source and the test point is usually no more than about 5m. Therefore, within this distance range, the number of calibration points is usually 2. Since different types of radiation protection instruments have different ranges, the required corresponding calibration points are also different. Therefore, the fewer the number of calibration points, the smaller the types of instruments that can be calibrated. However, the cost of establishing a gamma-ray reference radiation field is relatively high, and the construction of the site is also relatively complex. Therefore, maximizing the utilization of the gamma-ray reference radiation field is of great significance. Utility Model Content

[0005] To address the aforementioned problems in the existing technology, this utility model provides a single-source irradiation device capable of achieving dual-source functionality, comprising:

[0006] The output device body is provided with a ray output channel;

[0007] And a source rotating rod that can be inserted into the output device body, wherein a first ray outlet and a second ray outlet are respectively provided on opposite sides of the center position of the source rotating rod;

[0008] The source rotation rod is rotatable relative to the output body, such that the first ray outlet is aligned with the ray output channel, or the second ray outlet is aligned with the ray output channel.

[0009] In some embodiments, when the source rotating rod rotates 180°, the alignment of the first ray outlet with the ray output channel changes to the alignment of the second ray outlet with the ray output channel.

[0010] In some embodiments, the source rotating rod includes: an outer shell, within which a first shield and a second shield are respectively provided at both ends of the source rotating rod, with a gap between the first shield and the second shield, the gap and the outer shell forming a scattering cavity, and a radiation source is placed in the scattering cavity.

[0011] In some embodiments, the first ray outlet and the second ray outlet are respectively located on the outer shell of the scattering cavity on the opposite side, and the first ray outlet and the second ray outlet are through holes of different sizes.

[0012] In some embodiments, the first and second shields are cylindrical.

[0013] In some embodiments, the scattering cavity is further provided with a built-in attenuator, which is located below the radiation source.

[0014] In some embodiments, the scattering cavity is further provided with an attenuator housing, and the radiation source and the built-in attenuator are placed inside the attenuator housing.

[0015] In some embodiments, the attenuator housing is fixed to the outer shell, and the built-in attenuator is fixed to the attenuator housing.

[0016] In some embodiments, the built-in attenuator can be replaced with a built-in attenuator of different thicknesses depending on the attenuation factor.

[0017] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0018] The single-source irradiation device with dual-source function provided by this utility model has two different-sized ray output ports on the source rod, and an attenuator is provided inside the source rod. By rotating the source rod, cooperating with the attenuator, and changing the ray output ports, the calibration points of the γ-ray reference radiation field are doubled compared to the original.

[0019] In this invention, the single-source device is designed to resemble a dual-source device, which multiplies the number of calibration points and greatly improves the utilization rate of the gamma-ray reference radiation field. This provides a foundation for maximizing the utilization of the gamma-ray reference radiation field energy, reduces the user's construction costs, and improves the user's verification efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a single-source irradiation device capable of dual-source functionality, as shown in an embodiment of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of a single-source irradiation device capable of dual-source functionality, as shown in an embodiment of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the source rotating rod structure shown in an embodiment of the present utility model;

[0024] in:

[0025] 1- Output unit;

[0026] 11-ray output channel;

[0027] 2-Source rotating rod;

[0028] 21-First ray exit;

[0029] 22 - Second ray exit;

[0030] 23-Outer shell;

[0031] 24 - First shielding body;

[0032] 25 - Second shielding body;

[0033] 26-Scattering cavity;

[0034] 3-Radioactive source;

[0035] 4- Built-in attenuator;

[0036] 5-Attenuator housing. Detailed Implementation

[0037] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of this utility model, but it is not intended to limit the scope of protection of the appended claims of this utility model.

[0038] Certain terms are used in this specification and the following claims to refer to specific components or parts. Those skilled in the art will understand that users or manufacturers may use different names or terms to refer to the same component or part. This specification and the following claims do not distinguish components or parts by differences in name, but rather by differences in function. The terms "comprising" and "including" used throughout this specification and the following claims are open-ended and should be interpreted as "including but not limited to". Furthermore, the term "connection" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connections made through other means.

[0039] It should be noted that in the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", as well as "about", "approximately", "substantially", "left and right", etc., indicating the orientation or positional relationship or parameters, are all based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, a specific size, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] See Figure 1-3 This utility model provides a single-source irradiation device capable of dual-source functionality, comprising: an output body 1, wherein the output body 1 is provided with a radiation output channel 11; and a source rotation rod 2 that can be inserted into the output body 1. In this embodiment, except for the left, right, and front radiation output channels, the remaining part of the output body 1 is a shielding layer, which can shield the radiation source radiation. After the source rotation rod 2 is inserted, the radiation is emitted only from the radiation output channel 11. The source rotation rod 2 has a first radiation outlet 21 and a second radiation outlet 22 on opposite sides of its center position. The source rotation rod 2 is rotatable relative to the output body 1, such that the first radiation outlet 21 is aligned with the radiation output channel 11, or the second radiation outlet 22 is aligned with the radiation output channel 11.

[0041] Specifically, in this embodiment, when the source rotating rod 2 rotates 180°, the alignment of the first ray outlet 21 with the ray output channel 11 changes to the alignment of the second ray outlet 22 with the ray output channel 11.

[0042] In this embodiment, the source rotating rod 2 includes an outer shell 23. Inside the outer shell 23, a first shield 24 and a second shield 25 are respectively provided at both ends of the source rotating rod 2. That is, the first shield 24 and the second shield 25 are fixed by the outer shell 23. The first shield 24 and the second shield 25 are cylindrical and there is a gap between the first shield 24 and the second shield 25. The gap and the outer shell form a scattering cavity 26. That is, the scattering cavity 26 is the hollow part in the middle of the source rotating rod 2, which can reduce the scattering of the radiation source. The radiation source 3 is placed in the scattering cavity 26.

[0043] In this embodiment, the output device body 1 is mainly made of lead or tungsten steel with high atomic number. The outer shell 23 of the source rotating rod 2 is made of stainless steel with good strength to enhance the rigidity and durability of the source rotating rod 2. The first shield 24 and the second shield 25 are made of lead or tungsten steel with high atomic number to prevent the radiation from being emitted to the left and right sides. The radiation source 3 is a gamma-ray radiation source, such as Cs-137 or Co-60.

[0044] The first ray outlet 21 and the second ray outlet 22 are respectively located on the outer shell 23 opposite to the scattering cavity 26, and the first ray outlet 21 and the second ray outlet 22 are through holes of different sizes, with the smaller through hole being the first ray outlet 21 and the larger through hole being the second ray outlet 22.

[0045] In this embodiment, the scattering cavity 26 is also provided with a built-in attenuator 4, which is located below the radiation source 3. The scattering cavity 26 is also provided with an attenuator housing 5, which is located inside the attenuator housing 5. The attenuator housing 5 is welded and fixed to the outer shell 23. The built-in attenuator 4 is fixed to the attenuator housing 5 by threads or welding.

[0046] In this embodiment, the built-in attenuator 4 is made of lead or tungsten steel with a high atomic number, which is used to attenuate the radiation beam of the radiation source. Depending on the attenuation factor, the built-in attenuator 4 is replaced with a built-in attenuator 4 of different thicknesses. The attenuator shell 5 is made of stainless steel and is used to fix the built-in attenuator 4.

[0047] The method of using the single-source irradiation device that can achieve dual-source functionality provided in this embodiment is as follows: (See attached...) Figure 1 The first ray outlet 21 is aligned with the ray output channel 11. At this time, the radiation source beam is emitted directly from the ray output channel 11. This allows for the calibration of instruments with a large range. Rotate the source rotation rod 2 180°. See [link / reference]. Figure 2At this time, the second ray outlet 22 is aligned with the ray output channel 11. After the ray is attenuated by the attenuator 4, it is emitted from the ray output channel 11. The ray is reduced by 2 times, 4 times or more, which can calibrate instruments with small ranges. Then, by rotating the source rotation rod 2, the single source device can realize the function of a dual source device.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A single-source irradiation device capable of achieving dual-source functionality, characterized in that: include: The output device body is provided with a ray output channel; And a source rotating rod that can be inserted into the output device body, wherein a first ray outlet and a second ray outlet are respectively provided on opposite sides of the center position of the source rotating rod; The source rotation rod is rotatable relative to the output body, such that the first ray outlet is aligned with the ray output channel, or the second ray outlet is aligned with the ray output channel.

2. The single-source irradiation device capable of dual-source function according to claim 1, characterized in that: When the source rotating rod rotates 180°, the alignment of the first ray outlet with the ray output channel changes to the alignment of the second ray outlet with the ray output channel.

3. The single-source irradiation device capable of dual-source function according to claim 1, characterized in that: The source rotating rod includes: an outer shell, with a first shield and a second shield respectively provided at both ends of the source rotating rod inside the outer shell, and a space between the first shield and the second shield, the space and the outer shell forming a scattering cavity, and a radiation source placed inside the scattering cavity.

4. The single-source irradiation device capable of achieving dual-source functionality according to claim 3, characterized in that: The first ray outlet and the second ray outlet are respectively located on the outer shell of the scattering cavity on the opposite side, and the first ray outlet and the second ray outlet are through holes of different sizes.

5. The single-source irradiation device capable of dual-source function according to claim 3, characterized in that: The first and second shields are cylindrical.

6. The single-source irradiation device capable of dual-source function according to claim 3, characterized in that: The scattering cavity is also equipped with a built-in attenuator, which is located below the radiation source.

7. The single-source irradiation device capable of dual-source function according to claim 6, characterized in that: The scattering cavity is also equipped with an attenuator housing, and the radiation source and the built-in attenuator are placed inside the attenuator housing.

8. The single-source irradiation device capable of realizing dual-source function according to claim 7, characterized in that: The attenuator housing is fixed to the outer shell, and the built-in attenuator is fixed to the attenuator housing.

9. The single-source irradiation device capable of dual-source function according to claim 6, characterized in that: The built-in attenuator can be replaced with built-in attenuators of different thicknesses depending on the attenuation factor.

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