CN110849684A - Device for preparing radioactive sample - Google Patents
Device for preparing radioactive sample Download PDFInfo
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- CN110849684A CN110849684A CN201911134203.9A CN201911134203A CN110849684A CN 110849684 A CN110849684 A CN 110849684A CN 201911134203 A CN201911134203 A CN 201911134203A CN 110849684 A CN110849684 A CN 110849684A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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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
- G21F7/00—Shielded cells or rooms
- G21F7/02—Observation devices permitting vision but shielding the observer
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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
- G21F7/00—Shielded cells or rooms
- G21F7/04—Shielded glove-boxes
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Abstract
An apparatus for preparing a radioactive sample, comprising: the radiation shield comprises a box body, one end of the box body is an open end, and the open end is connected with a side door; the top of the box body is provided with an opening group, the opening group comprises at least one opening, and the opening is communicated with the inner space and the outer space of the box body; at least parts of the box body and the side door are made of radiation shielding materials; remove the carrier, remove the carrier and including the portion of placing, be provided with card slot group on the portion of placing, card slot group includes at least one draw-in groove, and the draw-in groove is used for placing the experiment bottle. The invention obviously reduces the dosage level of the sample to a few micro-Hiwott in the experimental process, so that the experimental operations of dissolution of the radioactive sample, pH value adjustment and determination, filtration and separation of the sample and the like can be completed outside the glove box, further the operation personnel can be allowed to complete the fine operation more efficiently, the experimental time is shortened, the time of exposure to the radiation environment is reduced, and the health and the safety of the experiment personnel are ensured.
Description
Technical Field
The invention relates to the field of performance detection after nuclear fuel irradiation, in particular to a device for preparing a radioactive sample.
Background
In the field of performance detection after nuclear fuel irradiation, radionuclide separation and measurement have extremely important significance for improving the safety and the economy of a reactor, providing necessary data for a post-processing plant and the like.
Generally, a destructive method is required to cut and sample irradiated fuel elements in a hot chamber, and a required sample is loaded into a sample tube and transferred to a radiochemical analysis laboratory for subsequent analysis. The sample size of the hot cell cutting sample is usually much larger than that required for the actual radiochemical analysis for taking a plurality of analyses, so that the radiation dose level of the sample in the sample tube is high and can reach several hundred milli-Watts (msv/h).
The solid sample is dissolved to prepare a solution, and then a proper amount of solution sample is taken to be subjected to chemical preparation so as to meet the measurement requirements of equipment such as chromatography, mass spectrometry and the like. Because the sample is dispensed in small quantities, it is only necessary to fit into a small chemical preparation vessel, and it cannot be handled with the aid of auxiliary tools inside a glove box, it is necessary to transport the sample together with the chemical preparation vessel outside the glove box, for example in a fume hood, for processing, but the dose level of the dispensed sample can still reach a few tenths of millishivorters.
Disclosure of Invention
The invention aims to provide a device for preparing radioactive samples, which can effectively reduce the dosage level of the radioactive samples, so that operators can quickly and efficiently prepare the radioactive samples for analysis and detection of chromatography, mass spectrometry and the like in a low-radioactivity environment.
The invention is realized by the following technical scheme:
an apparatus for preparing a radioactive sample, comprising:
the radiation shield comprises a box body, one end of the box body is an open end, and the open end is connected with a side door; the top of the box body is provided with an opening group, the opening group comprises at least one opening, and the opening is communicated with the inner space and the outer space of the box body; at least parts of the box body and the side door are made of radiation shielding materials;
the mobile carrier comprises a placing part, a clamping groove group is arranged on the placing part and comprises at least one clamping groove, and the clamping groove is used for placing the experiment bottle.
In order to detect the irradiated fuel element by chemical analysis equipment, the fuel element needs to be cut, sampled and dissolved to prepare an analysis sample. The cutting and sampling steps of the fuel element are generally completed in a hot chamber, and then an appropriate amount of solution samples are taken to prepare the solution meeting the requirements of equipment such as chromatography, mass spectrometry and the like. In the prior art, it is usually desirable to prepare samples outside a glove box, such as a fume hood, but on the one hand, the dosage level of the samples to be taken is high, usually tens of milli-hwott, and on the other hand, the preparation process requires delicate operations and long operation time, so that the operator is exposed to high dosage level for a long time in the sample preparation process, which obviously is not beneficial to the safety of the operator.
In order to solve the above problems, the present invention provides an apparatus for preparing a radioactive sample, which allows an operator to perform a sample preparation work at a low dose level and with high efficiency outside a glove box, not only improves the preparation efficiency, but also significantly reduces the dose level of the sample, ensuring the safety of the operator.
Specifically, the device mainly comprises a radiation shield and a movable carrier.
The radiation shield is of a box structure, one end of the box is an open end, and the other end of the box can be either an open end or a closed end. The open end is used for putting or taking the moving carrier into or out of the box body. The opening end is provided with a side opening door, and the side opening door and the box body can be connected in a hinge mode or other detachable connection modes, such as threaded connection, clamping connection and the like. The box body and the side door are made of radiation shielding materials, the radiation shielding materials can be any radiation shielding materials in the nuclear field, such as lead glass, and the wall surface of the box body and the side door can be designed into a hollow structure and lead is filled in the hollow structure. The box body and the side door can be partially made of radiation shielding materials or can be made of shielding materials completely. Preferably, in order to obtain better experimental visual field and radiation protection effect, the box body and the side door are both made of transparent lead glass.
The top of box is provided with the trompil group, the trompil group includes at least one trompil. When preparing the sample, the operator can adjust and measure the pH value of the sample in the sample bottle or the filter flask in the box body through the opening, and perform operations such as sample filtration and partition. The sizes of the openings in the opening group can be the same or different, and the sizes and the shapes of the openings can be adjusted according to the actual application of the openings.
The mobile carrier comprises a placing part, the clamping groove set arranged on the placing part comprises at least one clamping groove, the clamping groove is used for placing an experiment bottle, and the specific size of each clamping groove can be determined according to actual requirements. The laboratory bottle herein refers to various kinds of containers for sample preparation, such as a sample bottle, a filter bottle, and the like. Through removing the carrier, can avoid operating personnel and sample bottle or filter flask direct contact in the experimentation effectively.
During the use, place the experiment bottle in the draw-in groove group of removal carrier, then open the side and open the door and put into the box with removing the carrier through the open end, later close the side and open the door. The housing and the radiation shielding material of the side door can significantly reduce the sample dose level after the side door is closed. And then, carrying out various experimental operations on the samples in the box body through the opening group at the top of the box body, and finally preparing the samples meeting the requirements of chemical analysis and detection equipment.
Through the arrangement, the dosage level of the sample in the experimental process is remarkably reduced to a few micro-Hiwott, so that the dissolving, pH value adjusting and measuring, sample filtering and separating and other experimental operations of the radioactive sample can be completed outside the glove box, further, the operation personnel can be allowed to complete the fine operation more efficiently, the experimental time is shortened, the time of exposure in the radiation environment is reduced, and the health and the safety of the experiment personnel are guaranteed.
As a preferable mode of the present invention, an opening is provided on a side wall of the cabinet, and a handle is detachably attached to a side surface of the placing portion, and the handle extends to the outside of the cabinet through the opening when the moving carrier is located in the radiation shield. An opening is arranged on the side wall of the box body, and the opening extends along the opening end of the box body to the other end. The height of the opening should be as small as possible to achieve a better radiation shielding effect while ensuring the free movement of the handle. The placing part is detachably connected with the handle, and preferably, the placing part is connected with the handle in a clamping or threaded connection mode. When using, at first will place the inside that the box was put into through the open end to the portion of placing the sample, later pass the opening with the joint end of handle and be connected fixedly with the portion of placing, can begin experimental operation after closing the side opening door. In whole operation process, operating personnel can move the position of the portion of placing in the box through the handle to change the relative position of trompil and draw-in groove, and then accomplish the experimental operation of a plurality of continuity. For example, after pH value adjustment is completed at first trompil department, can move the portion of placing through the handle for the draw-in groove is located second trompil department, and then detects whether pH value satisfies the requirement through second trompil, if unsatisfied, then moves the draw-in groove to first trompil below. Through the setting, operating personnel need not to contact the portion of placing in the experimentation, has further reduced the radiation effect, can accomplish continuity experiment operation fast, high-efficiently simultaneously, improves experimental efficiency by a wide margin, shortens the preparation time.
As a preferable connection mode of the handle and the placing part, a groove is arranged on the handle, a clamping plate is arranged in the groove, a spring is arranged between the groove and the clamping plate, and a concave part is arranged on the upper surface of the clamping plate; the side of the placing part is provided with a clamping groove, the top surface of the clamping groove is provided with a protruding part, and the protruding part is matched with the concave part on the clamping plate. In order to improve the disassembly and assembly efficiency of the handle and the placing part, a groove is formed in the handle, a spring is arranged on the bottom surface of the groove, and a clamping plate is connected to the upper end of the spring. Preferably, in order to improve the stability of the engaging plate, a plurality of springs are provided, and the plurality of springs are distributed in a positive matrix below the engaging plate. The side of the placing part is provided with a clamping groove which is used for receiving and clamping the handle.
With the above arrangement, the handle and the placing portion include the unlocked state and the locked state. Under the locking state, the spring is in compression state, and the depressed part of block board and the bellying joint of block inslot, the block board receives the vertical ascending effort of spring simultaneously, and depressed part butt bellying is in order to form stable connection, and operating personnel can place the translation of portion in the box through handle control. Under the unblock state, the spring is in natural state, and depressed part and bellying do not form the joint structure.
When the handle needs to be switched from the unlocking state to the locking state, one end of the handle with the clamping plate is inserted into the clamping groove, the clamping plate inclines downwards under the extrusion of the protruding portion, the spring is compressed, then the handle is continuously pushed until the handle passes through the concave portion, the clamping plate moves upwards under the action of the spring, the concave portion is matched with the protruding portion, and the handle and the placing portion are in the locking state. When the locking state is required to be switched to the unlocking state, the other end of the handle is lifted, so that an included angle is formed between the handle and the horizontal plane, the protruding portion is separated from the recessed portion under the action of the spring, and then the handle is pulled out from the clamping groove.
Therefore, the quick assembly and disassembly of the handle on the placing part can be realized by the clamping mode between the handle and the placing part, the experiment efficiency is improved, and the assembly and disassembly space is reduced, so that the side opening door can be closed after the placing part is placed into the box body, and then the quick assembly and disassembly of the handle is realized through the opening.
Further, the bottom of the clamping groove is provided with a filling pad, and the filling pad is made of a flexible material. The filling pad can generate certain deformation under the action of external force, and the handle is convenient to unlock from the placing part. Simultaneously, the filling pad can also fill the working gap between the lower surface of the handle and the clamping groove, so that the connection between the lower surface of the handle and the clamping groove is more stable, and the operator cannot feel loose. Preferably, the filler material may be made of rubber. The surface friction coefficient of the filling material made of rubber is high, and translation between the lower surface of the handle and the clamping groove can be further avoided. Further preferably, the filling material may be made of a fluororubber having high radiation resistance.
As another preferable scheme of the invention, a flat plate is arranged on the bottom surface of the box body, and a positioning groove is arranged on the flat plate; the bottom of the placing part is provided with a positioning plate, and the positioning plate is used for being placed in the positioning groove. The flat plate is arranged on the bottom surface of the box body, the positioning grooves formed in the flat plate form a moving track of the positioning plate, preferably, the side face, located at the opening, of the flat plate is flush with the side face, located at the opening, of the box body, and the flat plate is preferably made of lead glass. After the box is put into to the portion of will placing, the locating plate of the portion bottom of placing is located the constant head tank to the realization is to the injecing of the portion removal orbit of placing, avoids the draw-in groove position offset that the human factor leads to, improves the alignment efficiency of draw-in groove and trompil, further improves the meticulous degree of experiment, shortens the preparation time. Preferably, the width of the positioning groove is 1.5-2 times of the width of the positioning plate.
Further, a magnet located right below the opening is arranged on the inner wall of the positioning groove, and a ferromagnetic material is arranged on the positioning plate. In order to further improve the alignment efficiency of the card slot and the opening, a magnet is arranged in the positioning slot and is positioned right below the opening, and a ferromagnetic material is arranged on the positioning plate, wherein the ferromagnetic material comprises a metal magnetic material such as iron, cobalt, nickel and alloys thereof, and a non-metal magnetic material such as ferrite. Through this setting, when removing the portion of placing, the face that does not set up the magnet that makes locating plate laminating constant head tank removes, and when the draw-in groove through the trompil, under the magnetic force, the locating plate removed to the magnet, and ferromagnetic material and magnet laminating realize the quick alignment of draw-in groove and trompil. When the placing part needs to be moved again, external force overcoming the magnetic force is applied. It will be appreciated by those skilled in the art that the magnetic force of the magnet may be set as small as possible, which not only serves to alert the operator, but also can be overcome with a slight external force.
As an embodiment of the opening set and the card slot set of the present invention, the opening set includes a first opening and a second opening, and the card slot set includes a first card slot for receiving a sample bottle. The arrangement is primarily intended to accomplish continuous pH adjustment and determination operations. Specifically, after the door was opened to the closed side, place the portion through handle control and remove, and then drive the sample bottle in the first draw-in groove and remove under to first trompil, add the pH regulating solution through first trompil in to the sample bottle to reuse solution ration and add the instrument, the several minutes of stewing afterwards. And then, moving the placing part again to enable the first clamping groove to move to the position right below the second opening, measuring the pH value of the solution by using a needle type pH meter prepared in advance, and when the pH value of the solution does not meet the requirement, moving the first clamping groove to the position below the first opening again to continue adding the pH regulating solution until the pH value meets the requirement.
As another embodiment of the open hole group and the card slot group, the open hole group further comprises a third open hole, the card slot group further comprises a second card slot, and the second card slot is used for placing a filter bottle; the distance between the second opening and the third opening is equal to the distance between the first clamping groove and the second clamping groove. Through the arrangement, the filtering and the separating of the sample can be continuously completed after the continuous pH value adjustment and determination operation is completed. Specifically, after the pH value of the solution meets the requirement, the distance between the first clamping groove and the second clamping groove is equal to the distance between the second opening and the third opening, and the second clamping groove is just below the third opening. And (3) filtering the sample in the sample bottle in the first clamping groove into a filter bottle placed in the second clamping groove by using a solution filtering device, standing for several minutes, observing the state of the sample, and taking the sample solution in the filter bottle by using a sample taking device for analysis in the next step if the sample is in a clear state.
Through above-mentioned two kinds of technical scheme, can accomplish pH value regulation and survey, the filtration and the branch of sample and get the experiment in succession under the prerequisite of not taking out the portion of placing. Of course, those skilled in the art should understand that more than three openings and more than two slots may be provided to complete more kinds of experimental operations, all operations are completed in a closed box, not only is the sample dosage level low, but also the operation is fine, fast and efficient, the preparation time is greatly shortened, and the qualification rate of the prepared sample is improved.
Further, the box body and the side door are both made of lead glass. The lead glass has the nuclear radiation shielding effect, and the transparent characteristic of the lead glass is convenient for operators to observe the change condition of a sample to be processed under the protection condition and take different countermeasures.
Further, the moving carrier is made of polytetrafluoroethylene.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention obviously reduces the dosage level of the sample to a plurality of micro-Hiwott in the experimental process, so that the experimental operations of dissolution, pH value adjustment and determination, sample filtration and separation and the like of the radioactive sample can be completed outside the glove box, further the operation personnel can be allowed to complete the fine operation more efficiently, the experimental time is shortened, the time of exposure to the radiation environment is reduced, and the health and the safety of the experiment personnel are ensured;
2. according to the invention, through the arrangement of the opening and the handle, an operator does not need to contact the placing part in the experiment process, the radiation effect is further reduced, meanwhile, the continuous experiment operation can be rapidly and efficiently completed, the experiment efficiency is greatly improved, and the preparation time is shortened;
3. according to the invention, the rapid assembly and disassembly of the handle on the placing part can be realized by arranging the clamping mechanism of the handle and the placing part, so that the experimental efficiency is improved, and meanwhile, the assembly and disassembly space is reduced, so that an operator can close the side opening door after placing the placing part into the box body, and then the rapid assembly and disassembly of the handle can be realized through the opening;
4. the positioning groove and the positioning plate are arranged, so that the moving track of the placing part is limited, the deviation of the position of the clamping groove caused by human factors is avoided, the alignment efficiency of the clamping groove and the opening is improved, the fineness of an experiment is further improved, and the preparation time is shortened;
5. according to the invention, the ferromagnetic material and the magnet are respectively arranged on the positioning plate and the positioning groove, so that when the placing part is moved and the clamping groove passes through the opening, the positioning plate moves towards the magnet under the action of magnetic force, the ferromagnetic material is attached to the magnet, and the clamping groove is quickly aligned with the opening; when the placing part needs to be moved again, external force overcoming the magnetic force is applied.
6. The box body and the side door are both made of lead glass, so that the nuclear radiation shielding box has a nuclear radiation shielding effect, is convenient for operators to observe the change condition of a sample to be processed under a protection condition, and adopts different countermeasures.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic diagram of a radiation shield in an embodiment of the present invention;
FIG. 2 is a schematic diagram of a mobile carrier according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a mobile carrier according to another embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of a mobile carrier placed on a positioning plate according to an embodiment of the present invention;
figure 5 is a top view of a radiation shield in an embodiment of the present invention.
Reference numbers and corresponding part names in the drawings:
11-box body, 12-first opening, 13-second opening, 14-third opening, 15-flat plate, 16-opening, 17-side opening door, 18-positioning groove, 19-magnet, 21-placing part, 22-first clamping groove, 23-handle, 231-groove, 232-spring, 233-clamping plate, 24-second clamping groove, 25-bulge, 26-positioning plate, 27-ferromagnetic material and 28-filling pad.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
In the description of the present invention, it is to be understood that the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the scope of the present invention.
Example 1:
an apparatus for preparing a radioactive sample as shown in fig. 1 and 2, comprising:
the radiation shield comprises a box body 11, wherein one end of the box body 11 is an open end, and the open end is connected with a side opening door 17; the top of the box body 11 is provided with an opening group, the opening group comprises a first opening 12 and a second opening 13, and the first opening 12 and the second opening 13 are communicated with the inner space and the outer space of the box body 11; the box body 11 and the side opening door 17 are both made of lead glass; an opening 16 is arranged on the side wall of the box body 11, a handle 23 is detachably connected to the side surface of the placing part 21, and when the mobile carrier is positioned in the radiation shield, the handle 23 extends to the outside of the box body 11 through the opening 16;
the mobile carrier comprises a placing part 21, a card slot group is arranged on the placing part 21, the card slot group comprises a first card slot 22, and the first card slot 22 is used for placing a sample bottle; the mobile carrier is made of polytetrafluoroethylene.
During the use, the door is opened to the closed side, then the control removes the carrier, makes first draw-in groove be located under first trompil, uses solution ration to add the instrument again and adds pH regulating solution through first trompil in to the sample bottle, and the several minutes of stewing afterwards. And controlling the movable carrier to enable the first clamping groove to be located right below the second opening, measuring the pH value of the solution by using a needle type pH meter prepared in advance, and when the pH value of the solution does not meet the requirement, rotating the first clamping groove to the position below the first opening to continuously add the pH regulating solution until the pH value meets the requirement. Continuous pH value adjustment and measurement operations can be completed through the arrangement.
In the technical scheme, in the chemical preparation process, the radiation dose rate of the outer surface of the device is less than 2.5 mu Sv/h, and meanwhile, the device does not need to directly contact a sample bottle, so that the irradiated dose of experimenters is reduced to the maximum extent; the visual lead shielding box body main body is made of transparent lead glass, so that the actual state of a sample to be processed can be observed conveniently under the condition of effective protection, and different countermeasures are taken; the visual shielding box body is small in size, low in cost, simple and convenient to manufacture, simple to operate and convenient for experimenters to operate.
In some embodiments, the radiation shielding material of the box body and the side door can be any radiation shielding material in the nuclear field, or the wall surface of the box body and the side door can be designed into a hollow structure, and lead is filled in the hollow structure, and the box body and the side door can be partially made of the radiation shielding material or can be made of the shielding material completely.
Example 2:
as shown in fig. 1 and 3, in the embodiment 1, the opening set further includes a third opening 14, the card slot set further includes a second card slot 24, and the second card slot 24 is used for accommodating a filter bottle; the distance between the second opening 13 and the third opening 14 is equal to the distance between the first card slot 22 and the second card slot 24.
After the pH value of the solution meets the requirement, the distance between the first clamping groove and the second clamping groove is equal to the distance between the second opening and the third opening, and the second clamping groove is just positioned under the third opening. And (3) filtering the sample in the sample bottle in the first clamping groove into a filter bottle placed in the second clamping groove by using a solution filtering device, standing for several minutes, observing the state of the sample, and taking the sample solution in the filter bottle by using a sample taking device for analysis in the next step if the sample is in a clear state.
The arrangement enables an operator to continue to complete the operations of filtering and separating the sample after completing the continuous operations of adjusting and measuring the pH value. The visual lead shielding box body is utilized to carry out chemical preparation on the sample, the sample meeting the sample introduction requirement of precision equipment can be prepared, and the sample qualification rate can reach 100%.
Generally, the chemical preparation of the radioactive sample in a glove shielding box needs 40min, while the chemical preparation of the radioactive sample by using the visual lead shielding device only needs 10-15 min, so that the working efficiency of personnel is greatly improved, the time of exposing the operating personnel in a radiation environment is shortened, and the safety of the operating personnel is further ensured.
In some embodiments, the number of the openings of the opening group may be three or more, and the number of the slots of the slot group may be two or more, according to different requirements of experimental operations.
Example 3:
as shown in fig. 4, in addition to the above embodiment, the handle 23 is provided with a groove 231, the engaging plate 233 is provided in the groove 231, a spring 232 is provided between the groove 231 and the engaging plate 233, and the upper surface of the engaging plate 233 is provided with a recessed portion; a clamping groove is formed in the side face of the placing part 21, a protruding part 25 is arranged on the top face of the clamping groove, and the protruding part 25 is matched with the concave part of the clamping plate 233; the bottom of the clamping groove is provided with a filling pad 28, and the filling pad 28 is made of flexible material.
Through the clamping mechanism who sets up handle and placing portion, can realize the quick assembly disassembly of handle on placing portion, not only improve experimental efficiency, reduced the dismouting space simultaneously for operating personnel will place the portion and put into the box after, can close the side door, later realize the quick assembly disassembly of handle through the opening.
Example 4:
as shown in fig. 4 and 5, on the basis of the above embodiment, a flat plate 15 is disposed on the bottom surface of the box body 11, and a positioning groove 18 is disposed on the flat plate 15; the bottom of the placing part 21 is provided with a positioning plate 26, and the positioning plate 26 is used for being placed in the positioning groove 18; the inner wall of the positioning slot 18 is provided with a magnet 19 positioned right below the opening, and the positioning plate 26 is provided with a ferromagnetic material 27.
In some embodiments, the plate 15 is made of lead glass, reducing the amount of radiation that leaks out of the opening 16, further reducing the dose level of the sample during the experiment.
Through setting up constant head tank and locating plate, realize the injecing of placing the portion removal orbit, avoid the draw-in groove position offset that the human factor leads to, improve the alignment efficiency of draw-in groove and trompil, further improve the meticulous degree of experiment, shorten preparation time.
The ferromagnetic material and the magnet are respectively arranged on the positioning plate and the positioning groove, so that when the placing part is moved and the clamping groove passes through the hole, the positioning plate moves towards the magnet under the action of magnetic force, the ferromagnetic material is attached to the magnet, and the clamping groove is quickly aligned with the hole; when the placing part needs to be moved again, external force overcoming the magnetic force is applied.
As used herein, "first," "second," "third," etc. (e.g., first opening, second opening, third opening, etc.) merely distinguish the respective components for clarity of description and are not intended to limit any order or to emphasize importance, etc. Further, the term "connected" used herein may be either directly connected or indirectly connected via other components without being particularly described.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An apparatus for preparing a radioactive sample, comprising:
the radiation shield comprises a box body (11), one end of the box body (11) is an open end, and the open end is connected with a side opening door (17); the top of the box body (11) is provided with an opening group, the opening group comprises at least one opening, and the opening is communicated with the inner space and the outer space of the box body (11); at least parts of the box body (11) and the side door (17) are made of radiation shielding materials;
the mobile carrier comprises a placing part (21), a clamping groove group is arranged on the placing part (21), the clamping groove group comprises at least one clamping groove, and the clamping groove is used for placing an experiment bottle.
2. Device for preparing radioactive samples according to claim 1, characterized in that an opening (16) is provided on the side wall of the housing (11), and a handle (23) is detachably connected to the side of the placement portion (21), wherein the handle (23) extends to the outside of the housing (11) through the opening (16) when the mobile carrier is located in the radiation shield.
3. The device for preparing radioactive samples according to claim 2, wherein the handle (23) is provided with a groove (231), the groove (231) is provided with a snap plate (233), a spring (232) is arranged between the groove (231) and the snap plate (233), and the upper surface of the snap plate (233) is provided with a recess; the side surface of the placing part (21) is provided with a clamping groove, the top surface of the clamping groove is provided with a convex part (25), and the convex part (25) is matched with the concave part on the clamping plate (233).
4. Device for preparing radioactive samples according to claim 3, characterized in that the bottom of the snap groove is provided with a filling pad (28), the filling pad (28) being made of a flexible material.
5. A device for preparing radioactive samples according to claim 1, characterized in that a flat plate (15) is provided on the bottom surface of the box (11), and a positioning slot (18) is provided on the flat plate (15); the bottom of the placing part (21) is provided with a positioning plate (26), and the positioning plate (26) is used for being placed in the positioning groove (18).
6. A device for preparing radioactive samples according to claim 5, characterized in that the positioning slot (18) is provided on its inner wall with a magnet (19) directly below the opening, and the positioning plate (26) is provided with a ferromagnetic material (27).
7. A device for preparing radioactive samples according to any one of claims 1 to 6, wherein the set of openings comprises a first opening (12) and a second opening (13), and the set of card slots comprises a first card slot (22), the first card slot (22) being adapted to receive a sample vial.
8. An apparatus for preparing a radioactive sample according to claim 7, wherein the set of openings further comprises a third opening (14), the set of card slots further comprises a second card slot (24), the second card slot (24) is for receiving a filter vial; the distance between the second opening (13) and the third opening (14) is equal to the distance between the first (22) and second (24) card slots.
9. An apparatus for preparing radioactive samples according to any one of claims 1 to 6, wherein the box body (11) and the side door (17) are made of lead glass.
10. A device for preparing radioactive samples, according to claim 9, wherein said mobile carrier is made of polytetrafluoroethylene.
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| CN112432968A (en) * | 2020-10-21 | 2021-03-02 | 中国核动力研究设计院 | Preparation method of irradiated reactor structure material thermal conductivity test sample and test sample box |
| CN112509721A (en) * | 2020-11-30 | 2021-03-16 | 湖南汉华京电清洁能源科技有限公司 | Radioactive sample processing method and device |
| CN112526578A (en) * | 2020-11-30 | 2021-03-19 | 湖南汉华京电清洁能源科技有限公司 | Radioactive sample processing device |
| CN113418859A (en) * | 2021-06-18 | 2021-09-21 | 北京卫星环境工程研究所 | Two-dimensional sample switching system |
| WO2022206883A1 (en) * | 2021-03-31 | 2022-10-06 | 中硼(厦门)医疗器械有限公司 | Neutron capture therapy system and neutron generation part recovery method therefor |
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| CN113418859A (en) * | 2021-06-18 | 2021-09-21 | 北京卫星环境工程研究所 | Two-dimensional sample switching system |
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