CN113066596A - Radioactive sample storage device - Google Patents
Radioactive sample storage device Download PDFInfo
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- CN113066596A CN113066596A CN202110307551.2A CN202110307551A CN113066596A CN 113066596 A CN113066596 A CN 113066596A CN 202110307551 A CN202110307551 A CN 202110307551A CN 113066596 A CN113066596 A CN 113066596A
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- 238000003860 storage Methods 0.000 title claims abstract description 76
- 238000005086 pumping Methods 0.000 claims description 15
- 238000000605 extraction Methods 0.000 claims description 14
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- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 230000005855 radiation Effects 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F5/00—Transportable or portable shielded containers
- G21F5/06—Details of, or accessories to, the containers
- G21F5/12—Closures for containers; Sealing arrangements
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
- G21F5/00—Transportable or portable shielded containers
- G21F5/06—Details of, or accessories to, the containers
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Abstract
The embodiment of the invention discloses a radioactive sample storage device, which comprises: a body having an upper opening and defining therein a plurality of sample-receiving chambers having an upper opening for receiving radioactive samples; a cover configured to be operably disposed over the main body to open or close an upper opening of the main body; and a plurality of plug bodies, each of which is disposed at an upper opening of one of the sample-receiving chambers to seal the sample-receiving chamber. The radioactive sample storage device can store a plurality of radioactive samples at the same time, and can avoid radiation leakage caused by that the plug body is separated from the upper opening of the sample accommodating cavity under the unexpected condition due to misoperation.
Description
Technical Field
The invention relates to the technical field of radioactive product storage, in particular to a radioactive sample storage device.
Background
In nuclear engineering applications, to study the post-irradiation properties of some materials, it is often necessary to first prepare the material into a target to be irradiated in a reactor. However, the strong radioactivity of the irradiated target increases the difficulty of storage of the target, and how to safely store the target to avoid radioactive leakage becomes a difficult problem to be solved.
Disclosure of Invention
The invention aims to provide a radioactive sample storage device for storing radioactive samples.
To achieve the above object, the present invention provides a radioactive sample storage device comprising:
a body having an upper opening and defining therein a plurality of sample-receiving chambers having an upper opening for receiving radioactive samples;
a cover configured to be operably disposed over the main body to open or close an upper opening of the main body; and
a plurality of plugs, each plug disposed at an upper opening of one of the sample-receiving chambers to seal the sample-receiving chamber.
By applying the technical scheme of the invention, a plurality of sample accommodating cavities are arranged in the main body, so that a plurality of radioactive samples can be stored simultaneously; the upper opening of each sample accommodating cavity is provided with the plug body, so that radiation leakage can be effectively avoided; through further setting up the lid, can avoid the maloperation to make the cock body break away from the upper portion opening that the sample held the chamber under unexpected circumstances, cause the radiation to leak, cause radioactive hazard to work area, operating personnel.
Drawings
Other objects and advantages of the present invention will become apparent from the following description of the invention which refers to the accompanying drawings, and may assist in a comprehensive understanding of the invention.
FIG. 1 is a schematic cross-sectional view of a radioactive sample storage device according to one embodiment of the present invention;
FIG. 2 is a schematic top view of the radioactive sample storage device shown in FIG. 1, with the cover in a closed position;
FIG. 3 is a schematic structural view of the body shown in FIG. 1;
FIG. 4 is a schematic top view of the radioactive sample storage device shown in FIG. 1, with the cover omitted;
FIG. 5 is a block schematic diagram of a radioactive sample storage apparatus according to one embodiment of the present invention;
FIG. 6 is a schematic top view of a radioactive sample storage device according to one embodiment of the present invention with the cover partially open;
FIG. 7 is a bottom schematic view of the cover shown in FIG. 6; and
fig. 8 is a schematic top view of a body according to another embodiment of the invention.
It is noted that the drawings are not necessarily to scale and are merely illustrative in nature and not intended to obscure the reader.
Description of reference numerals:
1. a radioactive sample storage device; 10. a main body; 11. a sample receiving chamber; 111. an opening section; 112. an accommodating section; 113. a fitting portion; 12. a housing; 121. a slide guide portion; 13. a sample container; 14. an air cavity; 141. a through hole; 15. a grid plate; 16. a shielding structure; 20. a plug body; 21. an extraction unit; 30. a cover body; 31. a sliding part; 40. a radioactive sample; 41. a positioning part; 50. a drive device; 51. a rack; 52. a gear; 53. a motor; 60. a control device; 70. and (4) a vacuumizing device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention. It should be apparent that the described embodiment is one embodiment of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
It is to be noted that technical terms or scientific terms used herein should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs, unless otherwise defined. If the description "first", "second", etc. is referred to throughout, the description of "first", "second", etc. is used only for distinguishing similar objects, and is not to be construed as indicating or implying a relative importance, order or number of technical features indicated, it being understood that the data described in "first", "second", etc. may be interchanged where appropriate. Furthermore, spatially relative terms, such as "above," "below," "top," "bottom," and the like, may be used herein for ease of description to describe one element or feature's spatial relationship to another element or feature as illustrated in the figures, and should be understood to encompass different orientations in use or operation in addition to the orientation depicted in the figures.
As shown in fig. 1 to 3, a radioactive sample storage apparatus 1 according to an embodiment of the present invention may include a main body 10 and a cover 30. The body 10 has an upper opening and defines therein a plurality of sample-receiving chambers 11 having an upper opening, the sample-receiving chambers 11 being for receiving radioactive samples 40. The cover 30 is configured to be operatively disposed over the main body 10 to open or close the upper opening of the main body 10.
In this embodiment, the radioactive sample 40 may be a target having strong radioactivity after being irradiated in a reactor. In other embodiments, the radioactive sample 40 can be other radioactive items. In other embodiments, the radioactive sample 40 may include the sample itself as well as a container holding the sample to facilitate robotic grasping of the container to transfer the sample to another location.
In particular, referring to fig. 1 and 4, the radioactive sample storage apparatus 1 further includes a plurality of plugs 20, each plug 20 being disposed at an upper opening of one of the sample-receiving chambers 11 to seal the sample-receiving chamber 11.
With the radioactive sample storage apparatus 1 of the present embodiment, a plurality of sample receiving chambers 11 are provided inside the main body 10, so that a plurality of radioactive samples 40 can be stored simultaneously; by arranging the plug body 20 at the upper opening of each sample accommodating cavity 11, radiation leakage can be effectively avoided; and through further setting up lid 30, can avoid the maloperation to make cock body 20 break away from the upper portion opening of sample holding cavity 11 under the unexpected circumstances, cause the radiation to leak, cause radioactive hazard to work area, operating personnel, have better security.
As shown in fig. 4, each stopper body 20 is provided with an extracting portion 21 so that a robot arm cooperates with the extracting portion 21 to remove the stopper body 20 from the sample-receiving chamber 11 or to fit the stopper body 20 into an upper opening of the sample-receiving chamber 11. Thus, when the cover 30 is opened, the stopper body 20 can be rapidly taken out by the manipulator to rapidly take or store the radioactive sample 40, and after the taking or storing is completed, the stopper body 20 can be rapidly inserted into the upper opening of the sample-receiving chamber 11 by the manipulator.
In some embodiments, the extraction part 21 is a space formed by being depressed inward from the upper surface of the plug body 20 to facilitate robot extraction. In other embodiments, the extraction portion 21 may be other structures that can be grasped by a robot, such as a cylinder or a handle with a slot; alternatively, a concave portion is provided on the top of the stopper body 20, a rod body to be grasped by a robot is provided on the concave portion, and the like.
As shown in fig. 4, in the radioactive sample storage apparatus 1 of the present embodiment, a plurality of sample receiving chambers 11 are arranged in a matrix. In other embodiments, a plurality of sample receiving chambers 11 may be arranged circumferentially to form a plurality of turns of sample receiving chambers 11. In alternative embodiments, the sample-receiving cavities 11 may be arranged in other regular patterns or in irregular patterns.
The cross-sectional shape of the sample-receiving chamber 11 may match the shape of the radioactive sample 40 to be contained therein. For example, when the radioactive sample 40 is a cylinder, the cross-section of the sample-receiving chamber 11 may be configured to be circular, as shown in fig. 4. When the radioactive sample 40 is a rectangular parallelepiped, the cross section of the sample-receiving chamber 11 may be provided as a rectangle. Of course, the cross-sectional shape of the sample-receiving chamber 11 may be other geometric shapes.
In this embodiment, the number of the sample-receiving chambers 11 is 16, and the shapes and the sizes of the 16 sample-receiving chambers 11 are the same. Of course, in other embodiments, the number of sample-receiving chambers 11 may be 2, 3, 5, 8, 10, 20, etc. The shape of the sample receiving chambers 11 may not be identical, for example, some sample receiving chambers 11 may have a circular cross section and some sample receiving chambers 11 may have a rectangular cross section; and/or some of the sample-receiving chambers 11 may have a cross-section in the shape of a hexagon, for example. Furthermore, the sample-receiving chambers 11 may not be exactly the same size, for example, a portion of the sample-receiving chambers 11 may be thicker in diameter and another portion of the sample-receiving chambers 11 may be thinner in diameter to accommodate radioactive samples 40 of different shapes and/or sizes.
Referring to fig. 5, in some embodiments, the radioactive sample storage apparatus 1 may further include: and a driving device 50 configured to drive the cover 30 to move relative to the upper opening of the main body 10 to open or close at least a portion of the upper opening of the main body 10. Thus, the cover 30 can be driven by the driving device 50 to fully open or partially open or close the upper opening of the main body 10. In the embodiment of the present invention, the cover 30 does not have to completely open the upper opening of the main body 10 each time. That is, when the access operation is performed, only a part of the plug 20 of the sample accommodating cavity 11 may be exposed, and it is not necessary to expose all the plug 20 of the sample accommodating cavity 11 each time, which on one hand may effectively reduce the radioactivity leakage of the radioactive sample 40 during the storage or extraction process, and on the other hand may reduce the difficulty of the manipulator operation and the probability of misoperation.
In a further embodiment, the radioactive sample storage apparatus 1 may further include: the control device 60 is configured to determine the sample receiving cavity 11 (i.e., the target sample receiving cavity 11) corresponding to the sample to be taken or stored according to the received sample taking instruction or the sample storing instruction, and control the driving device 50 to be activated to move the cover 30 relative to the upper opening of the main body 10 in the first direction S1, and control the driving device 50 to be deactivated when the sample receiving cavity 11 corresponding to the sample to be taken or stored is completely exposed. Therefore, when the storage operation is carried out each time, the number of the sample accommodating cavities 11 which need to be exposed can be reduced as much as possible, on one hand, the radioactivity leakage of the radioactive samples 40 in the storage or extraction process can be effectively reduced, on the other hand, the operation difficulty of the mechanical arm can be further reduced, and the probability of misoperation is reduced.
As shown in fig. 6, when it is required to store the radioactive sample 40 into the one or more sample-receiving cavities 11 in the left first row or extract the radioactive sample 40 from the one or more sample-receiving cavities 11 in the left first row, the control device 60 controls the driving device 50 to drive the cover 30 to move rightward (i.e., the first direction S1) until the plugs 20 of the left first row of sample-receiving cavities 11 are completely exposed, and then stops driving the cover 30 to move rightward. When carrying out access operation like this, only expose a list sample and hold chamber 11 can, compare and hold chamber 11 all and expose with whole samples, the radioactivity that can significantly reduce radioactive sample 40 deposit or draw the in-process leaks to and greatly reduced manipulator operation degree of difficulty, reduce its probability of maloperation.
In some embodiments, the control device 60 is further configured to control the driving device 50 to be activated to move the cover 30 relative to the upper opening of the main body 10 in a second direction S2 opposite to the first direction after receiving the closing command, and to control the driving device 50 to be deactivated until the cover 30 closes all the upper openings of the main body 10.
By arranging the control device 60 and the driving device 50, the embodiment of the application can realize the quick opening of the cover body 30 without the close-range operation of an operator, and is beneficial to the manipulator to quickly align with the target plug body 20 (i.e. the plug body 20 of the sample accommodating cavity 11 corresponding to a sample to be sampled or stored), so as to quickly extract or store the radioactive sample 40, and after the extraction or storage is completed, the manipulator is beneficial to quickly embedding the plug body 20 into the upper opening of the sample accommodating cavity 11, and then the control device 60 controls the driving device 50 to quickly close the cover body 30. It can be seen that the present embodiment greatly speeds up the extraction or storage process of the radioactive sample 40, thereby greatly reducing radioactive leakage during this process.
In some embodiments, the control device 60 may receive sample retrieval instructions and/or sample storage instructions and/or shutdown instructions with its instruction receiving apparatus. The instruction receiving device may be, for example, a touch screen or an operation key, and the control apparatus 60 may receive a corresponding instruction according to a click or press operation of the user. In the following, it will be briefly described how the control device 60 determines the target sample-receiving chamber 11 based on the received sample taking instruction or sample storing instruction, taking the instruction receiving device as an example of a touch panel. In this embodiment, icons corresponding to the sample receiving cavities 11 in the radioactive sample storage device 1 may be displayed on the touch screen, for example, for the radioactive sample storage device 1 shown in fig. 4, 16 icons corresponding to the 16 sample receiving cavities 11 in fig. 4 may be displayed on the touch screen, and a user may directly click on the target sample receiving cavity 11 to be extracted or stored on the touch screen, so that the control device 60 may determine the target sample receiving cavity 11 to be sampled or corresponding to the sample to be stored according to the click operation of the user. Of course, the present invention is not limited to this, and in other embodiments, the control device 60 may also determine the target sample accommodating cavity 11 according to the received sample taking instruction or sample storing instruction according to other conventional methods, which is not described herein again.
Referring to fig. 6 and 7, in some embodiments, the main body 10 is provided with a slide guide 121, and the cover 30 is provided with a slide 31 slidably engaged with the slide guide 121. The driving device 50 is configured to drive the sliding portion 31 to slide relative to the sliding guide portion 121, so as to move the cover 30 relative to the upper opening of the main body 10.
In some embodiments, the driving device 50 includes: a rack 51, a gear 52 engaged with the rack 51, and a motor 53 for driving the gear 52 to rotate, wherein the rack 51 is provided on the main body 10; the gear 52 and the motor 53 are provided on the cover 30. Thereby, the cover 30 is moved relative to the upper opening of the main body 10 by the engaging movement of the gear 52 on the rack 51.
In some embodiments, the sliding guide 121 may be a sliding rail, and a sliding rail and a rack 51 may be respectively disposed at opposite sides of the upper portion of the main body 10. The sliding part 31 may be a slider disposed in a slide rail, and two opposite sides of the lower surface of the cover 30 may be respectively disposed with a slider, and the slider is driven to slide in the slide rail by engaging the gear 52 on the motor shaft with the rack 51, so that the cover 30 moves along the slide rail direction relative to the upper opening of the main body 10.
In an alternative embodiment, the slide guide 121 may be provided on the cover body 30, and accordingly, the slide 31 may be provided on the main body 10. In such an embodiment, the rack 51 may be provided on the cover 30, and accordingly, the gear 52 and the motor 53 may be provided on the main body 10.
The connection mode of the cover 30 and the main body 10 is a preferred embodiment of the present invention. In other embodiments, the cover 30 may be screwed to the main body 10 or the cover 30 may be directly covered on the main body 10 and clamped to the main body 10; alternatively, the cover 30 may be rotatably coupled to the body 10. Of course, in these embodiments, it is difficult to cause the lid body 30 to partially open the upper opening of the main body 10, thereby making it difficult to realize the stopper body 20 that exposes only a part of the sample-accommodating chamber 11.
Referring to fig. 1 and 3, the bottom of the main body 10 may be further provided with an air chamber 14, and the air chamber 14 communicates with each sample-accommodating chamber 11. The bottom of the main body 10 is further provided with a through hole 141 communicating the air chamber 14 with the outside of the main body 10 to allow the vacuum-pumping means 70 to perform a vacuum-pumping operation of the air chamber 14 through the through hole 141 to make the sample-accommodating chamber 11 in a vacuum state.
In some embodiments, the radioactive sample storage apparatus 1 may further include a vacuum pumping device 70, and the control device 60 is further configured to: the vacuum-pumping means 70 is controlled to perform a vacuum-pumping operation on the air chamber 14 to maintain the sample-accommodating chamber 11 in a vacuum state. Thus, on the one hand, radioactive gas released from the radioactive sample 40 can be discharged in time, and on the other hand, the vacuum state facilitates sealing of the stopper body 20 with the upper opening of the sample-receiving chamber 11, so that radioactive leakage during sample storage can be reduced.
The evacuation device 70 may be, for example, a vacuum pump. The vacuum pumping means 70 is equipped with a pressure detecting means for monitoring the pressure inside the air chamber 14. When the pressure value is high, for example, exceeds a preset threshold value, the control device 60 controls the vacuum pumping device 70 to be activated to vacuum the air cavity 14 and the sample accommodating cavity 11, so as to timely discharge the radioactive gas released by the radioactive sample 40 in the sample accommodating cavity 11.
Of course, in alternative embodiments, the air chamber 14 may not communicate with each sample-receiving chamber 11, but with only a portion of the sample-receiving chamber 11. In such an embodiment, when the vacuum-pumping means 70 performs the vacuum-pumping operation on the air chamber 14 through the through-hole 141, the portion of the sample-accommodating chamber 11 communicating with the air chamber 14 is in a vacuum state, and the portion of the sample-accommodating chamber 11 not communicating with the air chamber 14 is in a normal pressure or even a positive pressure state.
Fig. 8 is a schematic top view of the body 10 according to another embodiment of the present invention. In the embodiment shown in fig. 8, 9 sample-receiving chambers 11 are formed in the body 10. Referring to fig. 8, in this embodiment, the bottom of each sample-receiving chamber 11 is formed with a fitting portion 113, and the fitting portion 113 is used to fit with the positioning portion 41 of the bottom of the radioactive sample 40 to be received to position the radioactive sample 40. When the air cavity 14 is arranged at the bottom of the main body 10, the matching part 113 is directly communicated with the air cavity 14; or the fitting portion 113 is provided with a passage communicating with the air chamber 14 so as to communicate indirectly with the air chamber 14.
In some embodiments, the positioning portion 41 at the bottom of the radioactive sample 40 is a protrusion of a regular hexagon, and accordingly, the fitting portion 113 of the sample-receiving chamber 11 is a recess of a regular hexagon, and the radioactive sample 40 is positioned in the sample-receiving chamber 11 by the fitting of the protrusion of the regular hexagon and the recess of the regular hexagon. In other embodiments, the positioning portion 41 at the bottom of the radioactive sample 40 may be a convex structure with other shapes, and accordingly, the matching portion 113 has a groove structure with a corresponding shape. Of course, in other embodiments, the positioning portion 41 may have a groove structure with other shapes, and accordingly, the matching portion 113 has a convex structure with a corresponding shape.
With continued reference to fig. 3 and 8, each sample-receiving chamber 11 includes an opening section 111 that decreases downward from its upper opening, and a receiving section 112 with a uniform inner diameter connected to the opening section 111, wherein the opening section 111 is used for receiving the stopper body 20, and the receiving section 112 is used for receiving the radioactive sample 40. Each plug body 20 has a structure that cooperates with the open section 111 to seal the sample-receiving chamber 11.
In some embodiments, the opening section 111 has a truncated cone structure that tapers from top to bottom. The opening section 111 may have a draft angle (i.e. a draft angle designed on the inner and outer walls of the product parallel to the demolding direction) of about 3 to 10 degrees, for example, so as to facilitate casting and achieve a good sealing effect.
In some embodiments, the body 10 includes: a housing 12 and a plurality of sample containers 13. The housing 12 defines a receiving space having an upper opening; a plurality of sample containers 13 are arranged in the receiving space, each sample container 13 forming one sample receiving chamber 11 or forming a receiving section 112 of one sample receiving chamber 11.
The housing 12 may be a rectangular parallelepiped structure made of stainless steel with an upper opening. The sample container 13 may be made of stainless steel. The bottom of each sample container 13 is fixedly connected to the bottom of the housing 12. For example, the bottom of the sample container 13 may be welded to the bottom of the housing 12. An air cavity 14 is formed in the bottom of the housing 12. the air cavity 14 may also be defined by a stainless steel enclosure. The bottom of the sample container 13 is provided with an opening to communicate with the air chamber 14.
Of course, in other embodiments, the material of the sample container 13 and the housing 12 may be selected from other corrosion-resistant and radiation-resistant materials, such as titanium.
In some embodiments, each sample container 13 forms a sample receiving chamber 11. When the sample-receiving chamber 11 includes the opening section 111 which tapers downward from the upper opening thereof, the upper peripheral wall of the sample container 13 tapers downward from the upper opening thereof to form the opening section 111.
In other embodiments, each sample container 13 forms a receiving section 112 of one sample-receiving chamber 11. That is, the sample container 13 forms a part of the sample-receiving chamber 11. In such embodiments, the radioactive sample storage apparatus 1 further comprises: and a grid plate 15 disposed above the plurality of sample containers 13, the grid plate 15 being formed with a plurality of slots, each slot being connected to the accommodating section 112 above one of the sample containers 13 to serve as an opening section 111 of the sample accommodating chamber 11. It can be seen that the sample container 13 and the slots of the grid plate 15 together define a sample receiving chamber 11. The slots of the grid plate 15 are matched with the plug body 20 to realize the sealing of the sample accommodating cavity 11, thereby achieving the purpose of shielding radioactivity.
In some embodiments, the plug body 20 and the grid plate 15 may both be made of lead.
The radioactive sample storage apparatus 1 may further include: and a shielding structure 16 filled between an outer surface of each sample container 13 and an inner surface of the housing 12. The shielding structure 16 is made of concrete or cement. In such an embodiment, the grid plate 15 is arranged above the shielding structure 16.
In one specific embodiment, the housing 12 is formed by splicing a bottom steel plate and four side steel plates connected with the bottom steel plate into a rectangular parallelepiped structure with an upper opening. The sample container 13 is formed of a steel pipe. A plurality of steel pipes are welded on the bottom steel plate in a matrix distribution mode. An air cavity 14 is formed inside the bottom steel plate, a matching part 113 is formed at the welding part of the bottom steel plate and the steel pipe, and the matching part 113 is communicated with the air cavity 14 and the steel pipe. The shielding structure 16 is cement poured in the gaps between the steel pipes. The height of the cement is substantially level with the height of the steel pipe. The grid plate 15 is cast from lead and placed on top of the cement so that the slots of the grid plate 15 are in direct contact with the openings of the steel pipes. The lead plug is inserted into the groove of the grid plate 15 to seal the steel pipe. Racks 51 and slide rails are mounted on two opposite side steel plates of a rectangular parallelepiped structure, and a motor 53 and a slider are mounted on the cover body 30. The gear 52 on the output shaft of the motor 53 is engaged with the rack 51 for transmission. The cover 30 is driven by the motor 53 to move along the slide rail direction, so as to open or close the upper opening of the rectangular parallelepiped structure.
In some embodiments of the invention, radioactive sample storage device 1 is a subterranean well storage device. The peripheral wall of the main body 10 (i.e., the peripheral wall of the housing 12) serves as a well wall, and the cover 30 serves as a well lid. The radioactive sample storage device 1 is stored in its entirety or at least in its lower part in a storage well in the ground. Heavy concrete may be placed around the storage wells to shield the radiation from leaking around and below. The radioactive sample storage device 1 of the embodiment of the invention adopts a well-type design, so that the space of a hot chamber is not occupied; since the plurality of sample accommodating chambers 11 are contained in the main body 10, the number of samples to be stored is greatly increased, and the cost is low. In addition, the radioactive sample storage device 1 of the embodiment of the invention not only meets the storage requirement of the radioactive sample, well shields the radioactivity of the sample, but also facilitates the storage and the taking out of the sample. Different from the prior integrated storage well with fixed storage quantity and fixed space shape. The radioactive sample storage device 1 provided by the embodiment of the invention has a cuboid structure, so that the number of the radioactive sample storage devices 1 can be reasonably selected for assembly according to the number of samples; a plurality of radioactive sample storage devices 1 can be combined and arranged according to the shape of the storage space of the actual storage well, so that the quantity of radioactive samples stored in the whole storage system is increased.
The sample extraction process of the radioactive sample storage apparatus 1 is described in detail below with reference to fig. 6:
when in use, air is filled into the air cavity 14 through the through hole 141 to balance the pressure inside and outside the sample accommodating cavity 11. Then, the control device 60 controls the motor 53 to rotate to open the upper opening of the main body 10 by the lid body 30 according to the received sample taking instruction, and stops the motor 53 to stop the movement of the lid body 30 after the target sample accommodating chamber 11 is exposed. The stopper body 20 of the target sample-receiving chamber 11 is extracted by an external machine such as a robot or the like to be removed from the upper opening of the sample-receiving chamber 11, and then the radioactive sample 40 is grasped and transferred by a dedicated transfer device, after the operation is completed, the stopper body 20 is closed by the external machine, and then the control device 60 controls the motor 53 to rotate in the reverse direction according to the received closing instruction to cause the lid body 30 to close the upper opening of the main body 10. The control unit 60 then turns on the vacuum pumping unit 70 to pump air from the sample-accommodating chamber 11, and turns off the vacuum pumping unit 70 after the pressure has dropped to a certain level, thereby completing the sample extraction process. The storage process of the sample is similar to that described above, and is not described in detail herein.
As can be seen from the above description, the radioactive sample storage apparatus 1 according to the embodiment of the present invention has a simple structure and is easy to manufacture and assemble. The radioactive sample storage device is particularly suitable for storing the radioactive sample 40 with strong radioactivity, can effectively reduce radioactivity leakage of the radioactive sample 40 in the storage or extraction process, can effectively reduce the operation difficulty of a manipulator, reduces the probability of misoperation of the manipulator, and is favorable for realizing rapid storage and extraction of the radioactive sample 40.
It should also be noted that, in the case of the embodiments of the present invention, features of the embodiments and examples may be combined with each other to obtain a new embodiment without conflict.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and the scope of the present invention is subject to the scope of the claims.
Claims (19)
1. A radioactive sample storage device, comprising:
a body (10) having an upper opening and defining therein a plurality of sample-receiving chambers (11) having an upper opening, the sample-receiving chambers (11) being for receiving radioactive samples (40);
a cover body (30) configured to be operatively disposed over the main body (10) to open or close an upper opening of the main body (10); and
a plurality of plugs (20), each plug (20) being disposed at an upper opening of one of the sample-receiving chambers (11) to seal the sample-receiving chamber (11).
2. A radioactive sample storage device according to claim 1, further comprising:
a driving device (50) configured to drive the cover body (30) to move relative to the upper opening of the main body (10) so as to open or close at least part of the upper opening of the main body (10).
3. A radioactive sample storage device according to claim 2, further comprising:
the control device (60) is configured to determine a sample to be sampled or a sample containing cavity (11) corresponding to the sample to be stored according to the received sample taking instruction or the received sample storing instruction, control the driving device (50) to be started so as to enable the cover body (30) to move towards the first direction relative to the upper opening of the main body (10), and control the driving device (50) to be stopped when the sample to be sampled or the sample containing cavity (11) corresponding to the sample to be stored is completely exposed.
4. A radioactive sample storage device according to claim 3,
the control device (60) is further configured to control the driving device (50) to be activated to move the cover body (30) relative to the upper opening of the main body (10) in a second direction opposite to the first direction after receiving a closing command, and control the driving device (50) to be stopped until the cover body (30) closes all the upper openings of the main body (10).
5. A radioactive sample storage device according to claim 2,
the main body (10) or the cover body (30) is provided with a sliding guide part (121), and the cover body (30) or the main body (10) is provided with a sliding part (31) in sliding fit with the sliding guide part (121);
the driving device (50) is configured to drive the sliding part (31) to slide relative to the sliding guide part (121) so as to enable the cover body (30) to move relative to the upper opening of the main body (10).
6. A radioactive sample storage device according to claim 5,
the drive device (50) comprises: a rack (51), a gear (52) meshed with the rack (51) and a motor (53) for driving the gear to rotate, wherein
The rack (51) is arranged on the main body (10) or the cover body (30); the gear (52) and the motor (53) are provided on the cover body (30) or the main body (10).
7. A radioactive sample storage device according to claim 3,
the bottom of the main body (10) is provided with an air cavity (14) communicated with at least one sample accommodating cavity (11) and a through hole (141) communicated with the air cavity (14) and the outside of the main body (10) so as to allow a vacuum pumping device (70) to perform vacuum pumping operation on the air cavity (14) through the through hole (141) to enable the at least one sample accommodating cavity (11) to be in a vacuum state.
8. A radioactive sample storage device according to claim 7, further comprising an evacuation device (70),
the control device (60) is further configured to: controlling the vacuum-pumping device (70) to perform vacuum-pumping operation on the air cavity (14) so as to keep the at least one sample-containing cavity (11) in a vacuum state.
9. A radioactive sample storage device according to claim 1,
the bottom of each sample accommodating cavity (11) is formed with a matching part (113), and the matching part (113) is used for matching with a positioning part (41) at the bottom of a radioactive sample (40) to be accommodated so as to position the radioactive sample (40).
10. A radioactive sample storage device according to claim 1,
each sample accommodating cavity (11) comprises an opening section (111) which is downwards reduced from the upper opening of the sample accommodating cavity, and an accommodating section (112) which is connected with the opening section (111) and has a uniform inner diameter, wherein the opening section (111) is used for accommodating the plug body (20), the accommodating section (112) is used for accommodating a radioactive sample (40),
each plug body (20) has a structure which cooperates with the open section (111) to seal the sample receiving chamber (11).
11. A radioactive sample storage device according to claim 10, wherein the body (10) comprises:
a housing (12) defining a receiving space having an upper opening;
a plurality of sample containers (13) arranged in the receiving space, each sample container (13) forming one of the sample receiving chambers (11) or forming a receiving section (112) of one of the sample receiving chambers (11).
12. A radioactive sample storage device according to claim 11,
each of the sample containers (13) forming a receiving section (112) of the sample receiving chamber (11),
the radioactive sample storage device further comprises: a grid plate (15) disposed above the plurality of sample containers (13), the grid plate (15) being formed with a plurality of slots, each slot meeting the receiving section (112) above one of the sample containers (13) to serve as an open section (111) of the sample receiving chamber (11).
13. A radioactive sample storage device according to claim 12,
the plug body (20) and the grid plate (15) are made of lead.
14. A radioactive sample storage device according to claim 11, further comprising:
a shielding structure (16) filled between an outer surface of each of the sample containers (13) and an inner surface of the housing (12).
15. A radioactive sample storage device according to claim 14,
the shielding structure (16) is made of concrete or cement.
16. A radioactive sample storage device according to claim 11,
the bottom of each sample container (13) is fixedly connected with the bottom of the shell (12).
17. A radioactive sample storage device according to claim 11,
the sample container (13) is made of stainless steel.
18. A radioactive sample storage device according to claim 11,
the shell (12) is made of stainless steel and has a cuboid structure with an upper opening.
19. A radioactive sample storage device according to claim 1,
each plug body (20) is provided with an extraction part (21) so that a manipulator can be matched with the extraction part (21) to remove the plug body (20) from the sample containing cavity (11) or insert the plug body (20) into the upper opening of the sample containing cavity (11).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110307551.2A CN113066596A (en) | 2021-03-23 | 2021-03-23 | Radioactive sample storage device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110307551.2A CN113066596A (en) | 2021-03-23 | 2021-03-23 | Radioactive sample storage device |
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| CN113066596A true CN113066596A (en) | 2021-07-02 |
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