Protection box and protection device for strontium 90 application source

Abstract

The utility model discloses a protective box for a strontium 90 application source. The protective box comprises a box body and a box cover, the box body is provided with a groove body for placing a strontium 90 application source, and the strontium 90 application source is placed in the groove body with a source window facing downwards; the strontium 90 application source is sealed in the box body by the box cover, and the protection box formed by the box cover and the box body is cylindrical and is used for being matched with a cylindrical source tank for use. The protection box for the strontium 90 application source is cylindrical and can be used in cooperation with an existing cylindrical source tank, the universality of the source tank is improved, and the cost for redesigning and purchasing the source tank is reduced; meanwhile, the design of the protection box can reduce the tough-induced radiation, protect the radioactive source, improve the operation portability and reduce the radiation dose of operators.

Description

Technical Field

[0001] The utility model relates to the technical field of radiation source protection, in particular to a protection box and a protection device for a strontium 90 application source. Background Art

[0002] According to the process design, most radioactive sources are of cylindrical structure. The matching protective tanks (also called source tanks) used for storage and transportation are also cylindrical in structure to achieve uniform radiation shielding effect. For example, the most widely used cesium 137γ radioactive source in industry is a cylinder with an outer dimension of φ8mm*10mm, and the inner cavity of the commonly used protective lead tank is φ60mm*75mm.

[0003] The strontium 90 patch source is a type of square beta radiation source, such as 30mm*30mm*9mm; the radiation output window of the strontium 90 patch source is very thin, and it is very difficult to take and place using the existing cylindrical lead cans. The use of instruments can also easily damage the source window, causing radionuclide leakage; at the same time, the beta radiation source placed directly in the lead can will produce high levels of bremsstrahlung, resulting in a high radiation dose for the operator. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a protection box and a protection device for a strontium 90 patch source.

[0005] The utility model discloses a protective box for a strontium 90 patch source, comprising: a box body and a box cover;

[0006] The box body is provided with a slot for placing a strontium 90 patch source, and the strontium 90 patch source is placed in the slot with the source window facing downward;

[0007] The box cover seals the strontium 90 patch source in the box body. The protective box formed by the box cover and the box body is cylindrical and is used in conjunction with a cylindrical source tank.

[0008] As a further improvement of the present invention, two opposite inner walls of the trough body are provided with trough ears for conveniently taking and placing the strontium 90 patch source.

[0009] As a further improvement of the present invention, a flexible layer for protecting the source window is provided at the bottom of the trough body.

[0010] As a further improvement of the present invention, the flexible layer includes one of a non-woven fabric and a silicone pad.

[0011] As a further improvement of the present invention, the box cover is screwed onto the box body.

[0012] As a further improvement of the present invention, cutouts are provided on both sides of the box cover to facilitate unscrewing the box cover and the box body and removing the protective box from the source tank; further, stripes are designed on the cutouts to increase friction, facilitate unscrewing, and remove the protective box using tools; or, a lifting ring is provided on the box cover to facilitate removing the protective box from the source tank using tools.

[0013] As a further improvement of the present invention, the box body is made of a lightweight hard material, which includes one of hard plastic and aluminum alloy; the box cover is made of a hard transparent material, which includes one of plastics such as plexiglass, polystyrene, polycarbonate, etc., transparent ceramics or glass.

[0014] As a further improvement of the present invention, the protection box is placed in the cylindrical inner cavity of the source tank.

[0015] The utility model also discloses a protection device for a strontium 90 patch source, comprising a source tank and a protection box;

[0016] The source tank comprises a tank body and a tank cover which are connected to each other. A cylindrical inner cavity is arranged in the tank body, and the tank cover seals the protection box in the inner cavity of the tank body.

[0017] As a further improvement of the present invention, a gap is left between the protection box and the inner cavity of the tank body, and a spring or a spring is provided between the protection box and the bottom of the inner cavity;

[0018] The overall size of the protective box is designed to be 5 to 10 mm smaller than the overall size of the tank body cavity. The purpose is to install the source tank into the protective box. When the protective box is tightly closed in the source tank, the shrapnel or spring is in a compressed state, which fixes the protective box to reduce shaking and damage to the radiation source. After opening the source tank, the shrapnel or spring will pop the protective box out of the source tank mouth for easy removal.

[0019] As a further improvement of the present invention, the source tank is an existing conventional structure, and its inner cavity size is φ60mm*75mm, and the tank body and the tank cover are screwed and fixed; the size of the protective box is set accordingly based on the inner cavity size of the source tank, and the overall size of the protective box is φ55mm*70mm, and the size of the trough body is 31mm*31mm*10mm.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The protective box for the strontium 90 patch source of the utility model is cylindrical and can be used in conjunction with an existing cylindrical source tank, thereby improving the versatility of the source tank and reducing the cost of redesigning and purchasing the source tank;

[0022] The utility model is provided with slot ears, which facilitates the taking and placing of the strontium 90 patch source, thereby improving the portability of the operation;

[0023] The utility model reduces the damage to the source window by arranging a flexible material at the bottom of the groove body; at the same time, the box body adopts a light and hard material to reduce the bremsstrahlung radiation to the maximum extent;

[0024] The utility model provides a transparent box cover so that the radioactive source can be checked without opening the box cover, thereby reducing the radiation risk of the exposed radioactive source;

[0025] The utility model assembles a shrapnel or a spring at the bottom of the source tank. When the protection box is tightly covered in the source tank, the shrapnel or the spring is in a compressed state to fix the protection box to prevent the protection box from shaking and damaging the radiation source. After the source tank is opened, the shrapnel or the spring ejects the protection box out of the source tank opening, which is convenient for taking out and improves the portability of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the structure of a protective box for a strontium 90 patch source disclosed in an embodiment of the utility model;

[0027] Figure 2 This is a schematic structural diagram of a protective device for a strontium 90 application source disclosed in an embodiment of the utility model;

[0028] Figure 3 for Figure 2 Schematic diagram after opening.

[0029] In the figure:

[0030] 10. Protective box; 11. Box body; 12. Box cover; 13. Slot body; 14. Slot ear; 15. Flexible layer; 16. Incision; 20. Source tank; 21. Tank body; 22. Tank cover; 23. Inner cavity; 30. Spring; 40. Strontium 90 patch source. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The utility model is further described in detail below in conjunction with the accompanying drawings:

[0035] like Figures 1 to 3 As shown, the utility model provides a protective box 10 for a strontium 90 patch source, which is used in conjunction with an existing source tank with an inner cavity size of φ60mm*75mm; it includes: a box body 11 and a box cover 12; wherein,

[0036] The protective box 10 of the utility model is cylindrical, and its overall size is φ55mm*70mm; a groove body 13 for placing a strontium 90 patch source is provided on the box body 11, and the groove body size is 31mm*31mm*10mm, and the strontium 90 patch source 40 is placed in the groove body 13 with the source window facing downward; the two opposite inner walls of the groove body 13 are provided with groove ears 14 for convenient use of operating tools such as tweezers to take and place the strontium 90 patch source, and the bottom of the groove body 13 is provided with a flexible layer 15 for protecting the source window, and the flexible layer 15 includes one of a non-woven fabric and a silicone pad.

[0037] The box cover 12 of the utility model is screwed on the box body 13 to enclose the strontium 90 patch source 40 in the box body 11. The protective box formed by the box cover 12 and the box body 11 is cylindrical and used in conjunction with the cylindrical source tank 20. Notches 16 are provided on both sides of the box cover 12 to facilitate unscrewing the box cover and the box body and taking out the protective box 10 from the source tank 20; further, stripes are designed on the notches to increase friction, facilitate unscrewing, and take out using tools; or, a lifting ring is provided on the box cover to facilitate taking out the protective box from the source tank using tools.

[0038] The box body 11 of the utility model is made of a light hard material, and the light hard material includes one of hard plastic and aluminum alloy, so as to reduce bremsstrahlung radiation to the maximum extent.

[0039] The box cover of the utility model is made of hard transparent material, such as hard transparent plastic material such as organic glass, polystyrene, polycarbonate, etc., transparent ceramic or glass, which can facilitate observation of the label on the back of the source, facilitate checking the radiation source without opening the box cover, and reduce the radiation risk of exposed radiation sources.

[0040] like Figure 2 , 3 As shown, the utility model provides a protection device for a strontium 90 application source, comprising a source tank 20 and a protection box 10; wherein,

[0041] The source tank 20 includes a tank body 21 and a tank cover 22 connected to each other. A cylindrical inner cavity 23 is provided in the tank body 21, and the tank cover 22 seals the protective box 10 in the inner cavity 23 of the tank body 21; a gap is left between the protective box 10 and the inner cavity 23 of the tank body 21, and a spring or spring 30 is provided between the protective box 10 and the bottom of the inner cavity 23.

[0042] The overall size of the protection box 10 is designed to be 5 to 10 mm smaller than the overall size of the tank body cavity 23. The purpose is to load the source tank 20 into the protection box 10. When the protection box 10 is tightly closed in the source tank 20, the shrapnel or spring 30 is in a compressed state, which fixes the protection box 10 to reduce shaking and damage to the radiation source. After opening the source tank 20, the shrapnel or spring 30 will pop the protection box 10 out of the source tank mouth for easy removal.

[0043] The advantages of the utility model are:

[0044] The protective box for the strontium 90 patch source of the utility model is cylindrical and can be used in conjunction with an existing cylindrical source tank, thereby improving the versatility of the source tank and reducing the cost of redesigning and purchasing the source tank;

[0045] The utility model is provided with slot ears, which facilitates the taking and placing of the strontium 90 patch source, thereby improving the portability of the operation;

[0046] The utility model reduces the damage to the source window by arranging a flexible material at the bottom of the groove body; at the same time, the box body adopts a light and hard material to reduce the bremsstrahlung radiation to the maximum extent;

[0047] The utility model provides a transparent box cover so that the radioactive source can be checked without opening the box cover, thereby reducing the radiation risk of the exposed radioactive source;

[0048] The utility model assembles a shrapnel or a spring at the bottom of the source tank. When the protection box is tightly covered in the source tank, the shrapnel or the spring is in a compressed state to fix the protection box to prevent the protection box from shaking and damaging the radiation source. After the source tank is opened, the shrapnel or the spring ejects the protection box out of the source tank opening, which is convenient for taking out and improves the portability of the operation.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A protective box for a strontium 90 patch source, characterized in that: include: Box body and box cover; The box body is provided with a slot for placing a strontium 90 patch source, and the strontium 90 patch source is placed in the slot with the source window facing downward; The box cover seals the strontium 90 patch source in the box body, and the protective box formed by the box cover and the box body is cylindrical for use with a cylindrical source tank.

2. The protective box according to claim 1, characterized in that: Two opposite inner walls of the trough body are provided with trough ears for conveniently taking and placing the strontium 90 patch source.

3. The protective box according to claim 1, characterized in that: A flexible layer for protecting the source window is arranged at the bottom of the trough body.

4. The protective box according to claim 3, characterized in that: The flexible layer includes one of a non-woven fabric and a silica gel pad.

5. The protective box according to claim 1, characterized in that: The box cover is screwed onto the box body.

6. The protective box according to claim 5, characterized in that: Cutouts are arranged on both sides of the box cover to facilitate unscrewing the box cover and the box body and taking out the protective box from the source tank.

7. The protective box according to claim 1, characterized in that: The box body is made of a light hard material, which includes one of hard plastic and aluminum alloy; the box cover is made of a hard transparent material, which includes one of plastic, transparent ceramic or glass.

8. The protective box according to claim 1, characterized in that: The protection box is fitted and placed in the cylindrical inner cavity of the source tank.

9. A protective device for a strontium 90 application source, characterized in that: comprising a source tank and a protective box as claimed in any one of claims 1 to 8; The source tank comprises a tank body and a tank cover which are connected to each other. A cylindrical inner cavity is arranged in the tank body, and the tank cover seals the protection box in the inner cavity of the tank body.

10. The protection device according to claim 9, characterized in that A gap is left between the protection box and the inner cavity of the tank body, and a spring or a spring is arranged between the protection box and the bottom of the inner cavity.

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