Non-kinetic potential radioactive source shielding container

Abstract

The invention discloses a non-kinetic-potential radioactive source shielding container which comprises a shielding body and a shielding base which are connected in a buckled mode, a first containing groove and a second containing groove which are opposite to each other are formed in the connected ends of the shielding body and the shielding base respectively, and when the shielding body and the shielding base are buckled, the first containing groove and the second containing groove face each other. The first accommodating groove and the second accommodating groove are communicated to form an accommodating cavity; a containing cavity is formed in the base, a packaging shell is arranged in the containing cavity, a radioactive source container is arranged in the packaging shell, the packaging shell is filled with fluid, and when the packaging shell is turned over, the radioactive source container can float in the length direction of the packaging shell under the buoyancy action of the fluid. According to the shielding container, the radioactive source can be rapidly opened and withdrawn, the shielding container is convenient and rapid, the irradiation time is shortened, the radiation quantity of personnel is reduced, the irradiation influence on the surrounding environment is reduced, the shielding container is small in size and weight, easy to carry, convenient to transfer, easy to operate and low in fault tolerance rate, and the probability of radiation accidents is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear radiation protection, and in particular to a passive radiation source shielding container. Background Art

[0002] At present, the radiation source containers (lead cans) used for medium, high and low level radiation sources are often used in combination with shielding cans and shutters. Both the shielding cans and shutters are made of high-density shielding materials (such as lead and tungsten), which have good radiation shielding effects. The shutter is generally equipped with an electric or pneumatic interlocking mechanism. When the shutter is opened according to the command, the radiation source can emit radiation.

[0003] Medium, low, and micro-level radioactive sources or nuclear waste are also stored in lead cylinders, lead boxes, lead cabinets, etc. Medium, low, and micro-level radioactive sources often use thinner shielding materials to achieve shielding effects, so the size and weight of the shielding can are relatively small. For example, a 10mCi Cs137, shielding to 2.5μGy / h at 1 meter only requires 17mm of tungsten alloy, which is about 1.5kg of shielding material.

[0004] The mass of a medium, low or micro radioactive source is generally less than 10 grams. In conventional radioactive tests, medium, low or micro radioactive sources are often used to verify the response of the detector and the nuclide identification function. Users will use auxiliary tools such as tweezers to take the radioactive source out of the shielding container, which will result in a high fault tolerance rate, long irradiation time, and the risk of the radioactive source falling. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a passive radiation source shielding container to solve the problems in the prior art of complicated steps for taking the radiation source and the easy occurrence of radiation accidents.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a non-active potential radiation source shielding container, comprising a shielding body and a shielding base that are interlocked and connected to each other, and a first accommodating groove and a second accommodating groove that are opposite to each other are respectively opened at one end where the shielding body and the shielding base are connected, and when the shielding body and the shielding base are interlocked, the first accommodating groove and the second accommodating groove are connected to form an accommodating cavity; a packaging shell is provided in the accommodating cavity, one end of the packaging shell is accommodated in the first accommodating groove, and the other end can be accommodated in the second accommodating groove; a radiation source container is provided in the packaging shell, and the radiation source container has an accommodating cavity for accommodating a radiation source; the packaging shell is filled with fluid, and when the packaging shell is turned over, the radiation source container can float along the length direction of the packaging shell under the buoyancy of the fluid, and when the radiation source container floats to one end of the packaging shell close to the shielding base, the accommodating cavity of the radiation source container partially or completely extends out of the first accommodating groove of the shielding body.

[0007] As an optimization, the radiation source container comprises a radiation source shell floating in the fluid, and the accommodating cavity is provided in the radiation source shell.

[0008] As an optimization, a buoyancy compartment is also provided in the radiation source enclosure.

[0009] As an optimization, the buoyancy chamber is arranged at one end of the radiation source enclosure close to the shielding body, and the accommodating cavity is located at the other end of the radiation source enclosure.

[0010] As an optimization, when the radiation source container floats to one end of the packaging shell close to the shielding body, the accommodating cavity is located at the geometric center of the shielding container.

[0011] As an optimization, a snap-fit ​​groove is provided around the end of the shielding body opposite to the shielding base, and correspondingly, a snap-fit ​​boss is provided on the end surface of the shielding base, and the snap-fit ​​boss can be snapped into the snap-fit ​​groove.

[0012] As an optimization, the snap-fit ​​groove and the snap-fit ​​boss both extend along a circumferential direction in a broken line.

[0013] Compared with the prior art, the present invention has the following advantages: the shielding container of the present invention can quickly open and retract the radiation source, which is convenient and quick, shortens the irradiation time, reduces the radiation dose of personnel, reduces the radiation impact on the surrounding environment, is small in size and weight, is easy to carry, convenient to transport, easy to operate, has a low fault tolerance rate, and reduces the probability of radiation accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the radiation source of the present invention when it is in a shielding state; Figure 2 It is a schematic diagram of the structure of the radioactive source of the present invention when it is in an open state; In the figure: 1 shielding body, 2 shielding base, 3 packaging shell, 4 fluid, 5 radiation source shell, 6 accommodating cavity, 7 buoyancy chamber, 8 snap-fit ​​groove, 9 snap-fit ​​boss. DETAILED DESCRIPTION

[0015] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0016] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is 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 a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] Example: See Figure 1-Figure 2A non-active radiation source shielding container includes a shielding container with a cylindrical structure, the shielding container includes a shielding body 1 and a shielding base 2 that are coaxially snap-fitted, specifically, a snap-fitting groove 8 is provided at the end of the shielding body 1 opposite to the shielding base 2, and correspondingly, a snap-fitting boss 9 is provided on the end face of the shielding base 2, the snap-fitting boss 9 can be snapped into the snap-fitting groove 8, so that the shielding body 1 and the shielding base 2 can be snap-fitted quickly and conveniently, and are easy to install and disassemble. The snap-fitting groove 8 and the snap-fitting boss 9 both extend in a broken line along the circumferential direction, and the snap-fitting groove 8 and the snap-fitting boss 9 in the shape of a broken line can not only reduce the scattering of radiation, but also play a role in limiting and aligning each other.

[0019] A first accommodating groove and a second accommodating groove are coaxially provided at opposite ends of the shielding body 1 and the shielding base 2, respectively. When the shielding body 1 and the shielding base 2 are buckled, the first accommodating groove and the second accommodating groove are connected to form an accommodating cavity; a packaging shell 3 is provided in the accommodating cavity, one end of the packaging shell 3 is accommodated in the first accommodating groove, and the other end can be accommodated in the second accommodating groove; a radiation source container is provided in the packaging shell 3, and the packaging shell 3 is filled with a fluid 4. When the packaging shell 3 is turned over, the radiation source container can float along the length direction of the packaging shell 3 under the buoyancy of the fluid 4, and when the radiation source container floats to the end of the packaging shell 3 away from the shielding body 1, the accommodating cavity 6 of the radiation source container is partially or completely higher than the end surface of the shielding body 1. Specifically, the radiation source container includes a radiation source shell 5 floating in the fluid 4, and the accommodating cavity 6 of the radiation source shell 5 is used to accommodate the radiation source. Among them, the fluid 4 can be a physicochemically stable fluid 4 such as water, ethanol, antifreeze, mercury, etc. according to the buoyancy required by the radiation source.

[0020] In order to further improve the floating effect of the radiation source shell 5, a buoyancy chamber 7 is further provided in the radiation source shell 5. In this embodiment, the buoyancy chamber 7 is an air bag provided in the radiation source shell 5, or it can be a simple cavity structure, which is specifically configured according to buoyancy requirements.

[0021] In addition, the buoyancy chamber 7 is arranged at one end of the radiation source shell 5 close to the shielding body 1, and the accommodating cavity 6 is located at the other end of the radiation source shell 5. In this way, when the radiation source shell 5 floats to the end of the packaging shell 3 away from the shielding body 1, the accommodating cavity 6 can be as close to the end of the packaging shell 3 as possible, so that the radiation sources are all higher than the end surface of the shielding body 1, thereby reducing the radiation shielding effect during use and improving the use effect.

[0022] In this embodiment, when the radiation source container floats to one end of the packaging shell 3 close to the shielding body 1, the accommodating cavity 6 is located at the geometric center of the shielding container. In this way, by controlling the dimensions of the accommodating cavity, the packaging shell 3, the radiation source shell 5 and the position of the buoyancy chamber 7, the radiation source can be located at the geometric center of the shielding container in the shielding state, so that the shielding effect of the shielding container on the radiation source in all directions remains consistent, thereby improving the shielding effect.

[0023] When in use, with the exposed part facing downwards, Figure 1 , that is, the shielding body is buckled on the shielding base, and the radiation source container floats up to the geometric center of the shielding body in the fluid under the action of buoyancy. The radiation of the radiation source is shielded, and the radiation source is in a shielded (safe) state.

[0024] When the radiation source is required to emit radiation, the shield is turned over, such as Figure 2 , so that the exposed part faces upward, and the radiation source container floats in the fluid to the outside of the shielding body under the action of buoyancy, and the radiation source is in an open state.

[0025] Similarly, when the radiation source needs to be shielded again, the shielding body only needs to be flipped over onto the shielding base.

[0026] The flipping action can be manual or motorized.

[0027] Among them, according to the different types of radiation sources, the shielding body and the shielding base are made of different materials. If it is a γ radiation source, the shielding body and the shielding base are made of high atomic number materials, such as lead, tungsten and other materials; if it is a β radiation source, the shielding body and the shielding base are made of low atomic number materials, such as organic glass and other materials; if it is a neutron radiation source, the shielding body and the shielding base are made of hydrogen-containing materials, such as polyethylene, paraffin and other materials; the packaging shell, shielding body and shielding base are all cylindrical structures. The cylinder is evenly stressed, and the materials on all sides are of equal thickness, and the shielding effect is isotropic.

[0028] The packaging shell is made of a material with low shielding performance and high strength, such as carbon fiber.

[0029] In summary, the shielding container of the present invention can quickly open and retract the radiation source, which is convenient and quick, shortens the irradiation time, reduces the radiation dose to personnel, and reduces the radiation impact on the surrounding environment. It is small in size and weight, easy to carry, convenient to transport, easy to operate, and has a low fault tolerance rate, thereby reducing the probability of radiation accidents.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Those skilled in the art should understand that those modifications or equivalent substitutions of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution should be included in the scope of the claims of the present invention.

Claims

1. A passive radiation source shielding container, characterized in that: The invention comprises a shielding body and a shielding base which are interlocked and connected with each other, wherein a first accommodating groove and a second accommodating groove which are opposite to each other are respectively provided at one end where the shielding body and the shielding base are connected, and when the shielding body and the shielding base are interlocked, the first accommodating groove and the second accommodating groove are connected to form an accommodating cavity; a packaging shell is provided in the accommodating cavity, one end of the packaging shell is accommodated in the first accommodating groove, and the other end can be accommodated in the second accommodating groove; a radiation source container is provided in the packaging shell, and the radiation source container has an accommodating cavity for accommodating the radiation source; the packaging shell is filled with fluid, and when the packaging shell is turned over, the radiation source container can float along the length direction of the packaging shell under the buoyancy of the fluid, and when the radiation source container floats to one end of the packaging shell close to the shielding base, the accommodating cavity of the radiation source container partially or completely extends out of the first accommodating groove of the shielding body.

2. The passive radiation source shielding container according to claim 1, characterized in that: The radiation source container comprises a radiation source shell floating in a fluid, and the accommodating cavity is arranged in the radiation source shell.

3. The passive radiation source shielding container according to claim 2, characterized in that: A buoyancy compartment is also provided in the radiation source enclosure.

4. The passive radiation source shielding container according to claim 3, characterized in that: The buoyancy chamber is arranged at one end of the radiation source shell close to the shielding body, and the accommodating cavity is located at the other end of the radiation source shell.

5. The passive radiation source shielding container according to claim 3, characterized in that: When the radiation source container floats to one end of the packaging shell close to the shielding body, the accommodating cavity is located at the geometric center of the shielding container.

6. The passive radiation source shielding container according to claim 1, characterized in that: A buckling groove is arranged around one end of the shielding body opposite to the shielding base, and correspondingly, a buckling boss is arranged on the end surface of the shielding base, and the buckling boss can be buckled in the buckling groove.

7. The passive radiation source shielding container according to claim 6, characterized in that: The buckling groove and the buckling boss both extend along the circumferential direction in a broken line.

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