CN113071788B

CN113071788B - Radioactive gas extraction container

Info

Publication number: CN113071788B
Application number: CN202110307552.7A
Authority: CN
Inventors: 占勤; 杨洪广; 韩志博; 何长水; 陈国强; 杨丽玲; 张建通
Original assignee: China Institute of Atomic of Energy
Current assignee: China Institute of Atomic of Energy
Priority date: 2021-03-23
Filing date: 2021-03-23
Publication date: 2022-07-01
Anticipated expiration: 2041-03-23
Also published as: CN113071788A

Abstract

The embodiment of the invention discloses a radioactive gas extraction container, which comprises: the radioactive sample collection device comprises an outer shell, a sample collection device and a sample collection device, wherein a channel which is communicated up and down is formed in the outer shell, and a sample containing cavity which can contain at least one radioactive sample is arranged in the channel; the two sealing devices are arranged in the channel, are respectively positioned at the upper side and the lower side of the sample containing cavity and are used for sealing the sample containing cavity so as to prevent radioactive gas released by the radioactive sample in the sample containing cavity from flowing into the external environment; the sealing device is configured to be capable of forming an opening under an opening operation of an external opening device so that the sample containing cavity is communicated with an external environment through the opening, thereby enabling the radioactive gas to be extracted. According to the technical scheme of the embodiment of the invention, when the radioactive gas is extracted, a manipulator is not required to carry out sealing butt joint operation on the pipeline, so that the operation difficulty of the manipulator is reduced.

Description

Radioactive gas extraction container

Technical Field

The invention relates to the technical field of radioactive gas extraction, in particular to a radioactive gas extraction container.

Background

In nuclear engineering applications, radioactive isotope irradiation production is often required to obtain certain artificial elements or rare and precious elements with low abundance in nature. In this production process, the target material to be irradiated is made into a target to be irradiated in the reactor. The irradiated target can release radioactive gas, and the irradiated target needs to be transported to a radioactive gas extraction device to purge the radioactive gas released by the extraction target with an extraction carrier gas.

Disclosure of Invention

The main object of the present invention is to provide a radioactive gas extraction container for loading a sample having strong radioactivity and transferring the sample together into a radioactive gas extraction device to extract radioactive gas released from the sample by purging with an extraction carrier gas.

To achieve the above object, the present invention provides a radioactive gas extraction container comprising:

the radioactive sample storage device comprises an outer shell, a sample storage cavity and a sample discharge cavity, wherein a channel which is communicated up and down is formed in the outer shell, and a sample storage cavity capable of storing a plurality of radioactive samples is arranged in the channel; and

the two sealing devices are arranged in the channel, are respectively positioned at the upper side and the lower side of the sample containing cavity and are used for sealing the sample containing cavity so as to prevent radioactive gas released by radioactive samples in the sample containing cavity from flowing into the external environment; the sealing device is configured to be capable of forming an opening under an opening operation of an external opening device so that the sample receiving cavity is communicated with an external environment through the opening, thereby enabling the radioactive gas to be extracted.

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 gas extraction vessel according to one embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a radioactive gas extraction container according to an embodiment of the present invention placed inside a radioactive gas extraction apparatus;

FIG. 3 is a partial enlarged view of the area A shown in FIG. 1;

FIG. 4 is an enlarged view of a portion of the area B shown in FIG. 1;

FIG. 5 is a cross-sectional schematic view of the inner housing shown in FIG. 1; and

fig. 6 is a cross-sectional schematic view of another angle of the inner housing shown in fig. 5.

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 gas extraction vessel; 10. an outer housing; 11. a channel; 12. an outer cylinder; 121. a first cylinder; 1211. a first positioning portion; 1212. a first positioning matching part; 122. a second cylinder; 123. a third cylinder; 1231. a third positioning part; 124. a gasket; 125. a seal ring; 13. a first outer end cap; 131. an upper cover body; 132. a first extension portion; 133. a second extension portion; 1331. a second positioning portion; 14. a second outer end cap; 141. a lower cover body; 142. a third extension portion; 1421. a fourth positioning portion; 143. a fourth extension portion; 15. a first grasping portion; 16. a first mating portion; 17. a sealing device; 18. a housing positioning mating portion; 20. an inner housing; 21. a sample receiving chamber; 22. an inner cylinder; 221. a first half cylinder; 222. a second half cartridge; 223. an inner shell positioning part; 224. a fifth positioning part; 23. a first inner end cap; 231. a second extraction unit; 24. a second inner end cap; 241. a fixed part; 25. a support portion; 26. a partition portion; 261. a second positioning and matching part; 262. a plate body; 2621. a first plate body; 2622. a second plate body; 2623. a third plate body; 2624. a fourth plate body; 2625. a fifth plate body; 2626. a sixth plate body; 263. a circular arc portion; 264. a splicing fitting part; 27. a filtering part; 30. a radioactive sample; 40. a radioactive gas extraction device; 41. an extraction chamber; 42. a pneumatic gate valve; 43. an outlet portion; 431. a sealing part; 44. a positioning part; 45. an air intake line; 46. and an air outlet pipeline.

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.

The embodiment of the invention provides a radioactive gas extraction container which is used for loading a radioactive sample capable of releasing radioactive gas and transporting the radioactive sample and the radioactive sample to a radioactive gas extraction device. Wherein the radioactive gas extraction means is capable of extracting radioactive gas released by the radioactive sample using the extraction gas.

In the related art, the radioactive gas extraction container is a sealed container having gas flow lines at upper and lower ends thereof, respectively, and an electromagnetic valve is disposed on the gas flow line to control the gas flow line to be opened or closed. Before the radioactive gas in the radioactive gas extraction device is extracted, an air inlet pipeline and an air outlet pipeline of the radioactive gas extraction device are in sealing butt joint with two gas circulation pipelines of the radioactive gas extraction container respectively, and then an electromagnetic valve is opened to extract the radioactive gas in the radioactive gas extraction container by using the extraction gas in the air inlet pipeline. Since the above operation has a radiation risk, the sealed docking between the pipelines is achieved by using a robot in the related art. However, since the size of the pipeline to be butted is small, finding the butted pipeline and hermetically butting the two corresponding pipelines makes the operation difficult for the manipulator. The present application is an improvement based on the above-described problems.

As shown in fig. 1, a radioactive gas extraction container 1 of an embodiment of the present invention may include an outer case 10. The interior of the outer housing 10 forms a passage 11 which is vertically through, and a sample holding cavity 21 which can hold at least one radioactive sample 30 is arranged in the passage 11.

The radioactive sample 30 is a sample capable of releasing radioactive gas. In some embodiments, the radioactive sample 30 may be a target having strong radioactivity after being irradiated within a reactor. In other embodiments, the radioactive sample 30 can be other radioactive materials.

In order to prevent the escape of radioactive gases, two sealing means 17 for sealing the sample receiving chamber 21 are also provided in the channel 11. The two sealing means 17 are respectively located at the upper and lower sides of the sample-accommodating chamber 21, so that the sample-accommodating chamber 21 is sealed by the two sealing means 17 and the peripheral wall of the outer case 10, and thus, the radioactive gas released from the radioactive sample 30 in the sample-accommodating chamber 21 can be prevented from flowing into the external environment.

The sealing means 17 is configured to be capable of forming an opening under an opening operation of the external opening means so that the sample-receiving chamber 21 communicates with the external environment through the opening, thereby enabling the radioactive gas to be extracted. That is, since the sample-receiving chamber 21 communicates with the external environment through the opening, the extraction gas is allowed to flow into the sample-receiving chamber 21 to carry the radioactive gas together with the extraction gas out of the sample-receiving chamber 21, thereby enabling the radioactive gas to be extracted.

For the radioactive gas extraction container 1 of the embodiment of the present application, the sealing device 17 can seal the radioactive gas in the containing cavity 21 during the temporary storage of the radioactive sample 30 by the container or during the transfer of the radioactive sample 30 (for example, during the transfer of the radioactive sample 30 from the storage device to the radioactive gas extraction device). When it is necessary to place the radioactive gas extraction container 1 inside the radioactive gas extraction device to extract radioactive gas, an external opening device such as an opening machine may be used to open the opening in the sealing device 17, so that the sample-accommodating chamber 21 communicates with the external environment through the opening in the sealing device 17. Referring to fig. 2, the radioactive gas extraction container 1 is rapidly placed in the extraction chamber 41 of the radioactive gas extraction apparatus after the opening, and the extraction chamber 41 is sealed. The extraction gas provided by the gas inlet line 45 of the radioactive gas extraction device 40 will then flow into the sample receiving chamber 21 through the opening in the sealing device 17, and the radioactive gas released by the radioactive sample 30 will flow out of the sample receiving chamber 21 and into the gas outlet line 46 to be extracted.

It can be seen that, with the radioactive gas extraction container 1 of the present embodiment, the two sealing devices 17 are first opened by using the external opening device, then the radioactive gas extraction container 1 is placed into the extraction cavity 41 by using the manipulator from the upper opening of the radioactive gas extraction device 40, and then the upper opening of the radioactive gas extraction device 40 is automatically closed by using the manipulator or the pneumatic gate valve 42. Because the pipeline is not required to be subjected to sealing butt joint operation by using a manipulator, the operation difficulty of the manipulator is greatly reduced.

Referring to fig. 1, the outer case 10 is provided with a first grasping portion 15 for transferring the radioactive gas extraction container 1 to the inside of the radioactive gas extraction apparatus 40 in cooperation with a robot. In some embodiments, the first grasping portion 15 may be a groove that passes through from top to bottom, and the inner dimension of the groove is larger than the dimension of the upper end opening thereof. The robot may have a contracted state and an expanded state, which are laterally expanded to be in the expanded state after being inserted into the inside of the groove in the contracted state, so as to be confined inside the groove, and may perform a transfer operation to the outer case 10. In some embodiments, the first grasping portion 15 may also be a structure that can be grasped by a robot, such as a cylinder or a handle with a slot. In some embodiments, the appearance of the entire first gripper portion 15 may approximate a hexagonal nut structure.

Referring to fig. 1 and 2, the lower end of the outer case 10 is provided with a positioning fitting portion for fitting with a positioning portion 44 of the radioactive gas extraction device 40 to position the radioactive gas extraction container 1 in the radioactive gas extraction device 40.

In some embodiments, the positioning mating portion of the bottom of the radioactive gas extraction container 1 is a regular hexagonal protrusion, and correspondingly, the positioning portion 44 of the radioactive gas extraction device 40 is a regular hexagonal groove, and the radioactive gas extraction container 1 is positioned in the radioactive gas extraction device 40 by the mating of the regular hexagonal protrusion and the regular hexagonal groove. In other embodiments, the locating mating portion may be a raised structure having other shapes, and correspondingly, the locating portion 44 of the radioactive gas extraction device 40 has a correspondingly shaped groove structure. Of course, in other embodiments, the locating engagement portion may be a groove structure having a specific shape, and correspondingly, the locating portion 44 of the radioactive gas extraction device 40 has a correspondingly shaped protrusion structure.

The positioning portion 44 of the radioactive gas extraction device 40 is provided in the outlet portion 43 thereof for the extracted gas to flow out of the interior of the radioactive gas extraction device 40. Referring to fig. 2, the outlet portion 43 is communicated with a gas outlet line 46 of the radioactive gas extraction device 40, and the gas flowing into the outlet portion 43 flows out of the interior of the radioactive gas extraction device 40 through the gas outlet line 46. The lower end of the outer case 10 is also provided with a seal fitting portion 16 for sealing-fitting with a seal portion 431 of an outlet portion 43 of the radioactive gas extraction device 40 to communicate the lower end opening of the passage 11 with the outlet portion 43, so that the extracted gas flows into the sample-accommodating chamber 21 through the upper end opening of the passage 11, carrying the radioactive gas to the outlet portion 43. In such an embodiment, the extraction gas entering the radioactive gas extraction device 40 through the gas inlet line 45 firstly flows into the sample accommodating chamber 21 through the upper end opening of the passage 11, and then flows into the outlet portion 43 together with the radioactive gas, thereby achieving effective extraction of the radioactive gas.

In some embodiments, the sealing fitting portion 16 and the sealing portion 431 may be conical surfaces that are gradually enlarged from bottom to top, and the sealing fitting of the outlet portion 43 and the bottom of the outer housing 10 is realized by the fitting between the conical surfaces.

In some embodiments, the seal engagement portion 16 may be disposed above the locating engagement portion. In other embodiments, the sealing engagement portion 16 may also be provided on the outer peripheral surface of the locating engagement portion.

In some embodiments, the outer housing 10 includes: the outer cylinder 12, the first outer end cover 13 and the second outer end cover 14 are arranged at the upper end and the lower end of the outer cylinder 12. The first outer end cover 13 and the second outer end cover 14 are provided with through holes, and the outer cylinder 12, the first outer end cover 13 and the second outer end cover 14 together form a channel 11. In such a structure, the through hole of the first outer end cap 13 is an upper end opening of the channel 11, and the through hole of the second outer end cap 14 is a lower end opening of the channel 11.

In some embodiments, two sealing devices 17 may be disposed on the first outer end cap 13 and the second outer end cap 14, respectively, to seal the through holes therethrough. Specifically, one sealing device 17 may be provided on the lower surface of the first outer end cap 13, and the other sealing device 17 may be provided on the upper surface of the second outer end cap 14. In other embodiments, two sealing devices 17 may be disposed inside the outer cylinder 12, or one may be disposed inside the outer cylinder 12 and the other may be disposed on the first outer end cap 13 or the second outer end cap 14. The sealing means 17 may be a sealing plate.

The first catching portion 15 may be provided on the first outer end cap 13, and may be provided in particular on an upper portion of the first outer end cap 13. The sealing engagement portion 16 and the positioning engagement portion may be provided on the second outer cap 14, particularly, on a lower portion of the second outer cap 14.

In some embodiments, the first outer end cap 13 and the second outer end cap 14 may be both screwed with the outer cylinder 12, so that the robot can mount the first outer end cap 13 and the second outer end cap 14 on the outer cylinder 12 or remove the first outer end cap 13 and the second outer end cap 14 from the outer cylinder 12 by rotating the first outer end cap 13 and the second outer end cap 14.

Of course, in other embodiments, other connection manners between the first outer end cap 13 and the second outer end cap 14 and the outer cylinder 12 may also be adopted, for example, the first outer end cap 13 and the second outer end cap 14 directly cover the outer cylinder 12 and are clamped with the outer cylinder 12.

In some embodiments, sealing rings may be installed on the first outer end cap 13 and the second outer end cap 14 to seal the first outer end cap 13 and the second outer end cap 14 with the outer cylinder 12. In some embodiments, the sealing ring may be, for example, a silver-plated nickel metal ring.

Referring to fig. 3, the first outer end cap 13 may include: an upper cover body 131 formed with a through hole, and a first extension 132 extending upward from the upper cover body 131, wherein the first extension 132 defines a first catching portion 15.

The first outer end cap 13 further includes: a second extension part 133 downwardly extending from the upper cap body 131, wherein a radial outer surface of the second extension part 133 is formed with a screw thread to be engaged with a screw thread of a radial inner surface of an upper portion of the outer cylinder 12.

Referring to fig. 4, the second outer cap 14 may include: a lower cap body 141 formed with a through hole, and a third extension 142 extending upward from the lower cap body 141, wherein the third extension 142 is formed with threads on an outer surface thereof to be engaged with threads on a radially inner surface of a lower portion of the outer cylinder 12.

Further, the second outer end cap 14 further includes: a conical surface (or an annular conical surface) which is gradually enlarged from bottom to top is connected between the lower cover body 141 and the third extending portion 142; wherein the conical surfaces form the sealing engagement 16. The second outer end cap 14 further includes: a fourth extension portion 143 extending downward from the lower cap body 141, the fourth extension portion 143 defining a positioning engagement portion.

With continued reference to fig. 3, the outer barrel 12 includes: and the first cylinder 121 and the second cylinder 122 are axially spliced, wherein the first outer end cover 13 is connected with the upper end of the first cylinder 121, and the second outer end cover 14 is connected with the lower end of the second cylinder 122.

Specifically, a thread is provided on the inner surface in the radial direction of the upper portion of the first cylinder 121, and the second extension 133 of the first outer end cap 13 is screwed with the first cylinder 121; the second cylinder 122 is threaded at a lower portion of the radially inner surface thereof, and the third extension 142 of the second outer cap 14 is threadedly coupled to the second cylinder 122. The radial outer surface of the lower portion of the first cylinder 121 is formed with threads to be engaged with the threads of the radial inner surface of the upper portion of the second cylinder 122.

In some embodiments, a radially outer surface of a lower portion of the first cylinder 121 is formed with a first stopper 1211 for abutting an upper end of the second cylinder 122. The first positioning portion 1211 is a stepped surface provided on a radial outer surface of the lower portion of the first cylinder 121. The first cylinder 121 and the upper end of the second cylinder 122 may be welded at the first positioning portion 1211.

The radially outer surface of the second extending portion 133 of the first outer end cap 13 above the thread thereof is further provided with a second positioning portion 1331 for abutting against the upper end of the first cylinder 121. In some embodiments, the second positioning portion 1331 is a stepped surface provided at the radially outer surface of the second extension 133. The first outer end cap 13 may be welded to the upper end of the first cylinder 121 at the second positioning part 1331.

With continued reference to fig. 3, in some embodiments, the outer barrel 12 further comprises: the third cylinder 123, the radial outer surface of the third cylinder 123 is provided with a third positioning part 1231, the radial inner surface of the upper part of the first cylinder 121 is provided with a first positioning matching part 1212, and the third cylinder 123 is mounted on the first cylinder 121 by clamping the third positioning part 1231 between the first positioning matching part 1212 and the lower end of the second extension 133. In some embodiments, the third locating portion 1231 and the first locating mating portion 1212 are both annular tapered surfaces to achieve a sealing fit through the annular tapered surfaces. In such an embodiment, one of the two sealing means 17 is provided at the lower end of the third cylinder 123; and the other on the second outer cap 14.

The outer barrel 12 further includes: and a gasket 124, the gasket 124 being clamped between the lower end of the second extension 133 and the upper end of the third cylinder 123. The outer barrel 12 further includes: and a sealing ring 125 disposed between a lower surface of the third positioning portion 1231 of the third cylinder 123 and the first positioning engagement portion 1212 of the first cylinder 121. By providing the third cylinder 123, the gasket 124, the sealing ring 125, the third positioning portion 1231, the first positioning fitting portion 1212, and the second positioning portion 1331, the first cylinder 121 and the first outer end cap 13 are sealed.

Referring to fig. 4, for the second outer end cap 14, a fourth positioning portion 1421 is further provided on the radial outer surface of the third extending portion 142 below the thread thereof, for abutting against the lower end of the second cylinder 122. The fourth positioning portion 1421 is a stepped surface provided on the radially outer surface of the third extension 142. In some embodiments, the second outer cap 14 may be welded to the lower end of the second cylinder 122 at the fourth positioning portion 1421.

Referring to fig. 1, 3-5, in some embodiments, the radioactive gas extraction container 1 further comprises: and an inner housing 20 disposed inside the outer housing 10, and a sample receiving chamber 21 defined by the inner housing 20. The interior of the inner housing 20 may contain at least one radioactive sample 30. It will be appreciated that in such an embodiment, two sealing means 17 are provided on the upper and lower sides of the inner housing 20 respectively to seal the sample receiving chamber 21 or the inner housing 20.

In some embodiments, the outer housing 10 and the inner housing 20 may be made of a stainless steel material. Of course, in other embodiments, the material of the outer casing 10 and the inner casing 20 may be selected from other corrosion-resistant and radiation-resistant materials, such as high-temperature alloy.

The radial outer surfaces of the upper end and the lower end of the inner shell 20 are respectively provided with an inner shell positioning part 223, the radial inner surface of the outer shell 10 is correspondingly provided with two outer shell positioning matching parts 18, and the outer shell positioning matching parts 18 are matched with the inner shell positioning parts 223 to position the inner shell 20 inside the outer shell 10, so that the sealing device 17 is prevented from being scratched or broken by the inner shell 20 in the transferring process of the radioactive gas extraction container 1, and the leakage of the radioactive gas in the sample accommodating cavity 21 is avoided.

The inner shell positioning portion 223 and the outer shell positioning fitting portion 18 each include an annular tapered surface extending in the circumferential direction; the sealing between the inner shell 20 and the outer cylinder 12 is realized by an annular conical surface. Two inner shell positioning portions 223 may be provided at the lower ends of the first inner end cap 23 and the inner cylinder 22, respectively.

The inner housing 20 includes: an inner cylinder 22, a first inner end cover 23 and a second inner end cover 24 which are arranged at the upper end and the lower end of the inner cylinder 22. The first inner end cover 23 and the second inner end cover 24 tightly clamp the inner cylinder 22 in an interference fit manner, so that sealing is realized. The first inner end cap 23 and the second inner end cap 24 are provided with a plurality of through holes therethrough for allowing the flow of the extraction gas. In some embodiments, the aperture of the through holes on the first and second inner end caps 23, 24 may be 2mm-20mm, such as 3mm, 5mm, 12mm, etc.

In some embodiments, the outer barrel 12 and the inner barrel 22 may both be cylindrical.

The upper surface of the first inner end cap 23 is formed with a second catching portion 231 for engaging with a robot to lift the inner case 20.

The second inner end cap 24 is provided with a filter portion 27 for filtering the gas flowing out of the sample-accommodating chamber 21 from the through hole of the second inner end cap 24. This traps impurities in the sample-accommodating chamber 21 and prevents them from being extracted together with the radioactive gas.

The lower surface of the second inner end cap 24 is formed with a receiving portion in which the filter portion 27 is disposed, and a fixing portion 241 for fixing the filter portion 27 in the receiving portion is further provided in the receiving portion. The filter portion 27 is a porous filter sheet. In some embodiments, the cross-section of the receiving portion is a regular hexagon, and accordingly, the cross-section of the filter portion 27 and the fixing portion 241 is also a regular hexagon. The second inner end cap 24 and the fixing portion 241 may be fitted by interference fit and welded.

In some embodiments, the size of the through hole in the second inner end cap 24 is smaller than the size of the radioactive sample 30 to prevent the radioactive sample 30 from falling off the second inner end cap 24. In other embodiments, the size of the through hole on the second inner end cap 24 may be larger than the size of the radioactive sample 30, and the radioactive sample 30 may be supported by the filter portion 27 to prevent it from falling off.

In other embodiments, a filter portion 27 may also be provided on the first inner end cap 23 to filter the extraction gas flowing into the sample receiving chamber 21.

In some embodiments, the inner cylinder 22 is formed by circumferentially splicing a first half cylinder 221 and a second half cylinder 222; namely, the inner cylinder 22 can be formed by splicing two semi-circular arc surfaces. The first inner end cap 23 and the second inner end cap 24 are capped at the upper and lower ends of the first half cylinder 221 and the second half cylinder 222.

Referring to fig. 5 and 6, the inner housing 20 further includes: a plurality of partitions 26 detachably connected to the first half cylinder 221 and the second half cylinder 222 in the axial direction, each partition 26 being provided with a plurality of through holes; each radioactive sample 30 passes through the through-hole of each partition 26 in turn to be held by the plurality of partitions 26. In such an embodiment, the number of through-holes of the partition 26 determines the maximum number of radioactive samples that can be accommodated by the inner housing 20.

In the related art, when the radioactive gas released from the radioactive sample 30 is extracted, the extraction operation is generally performed on the radioactive sample 30 alone. That is, each radioactive sample 30 is placed in an extraction container having a size and shape adapted thereto, and the extraction container is transferred and placed in the radioactive gas extraction device 40 by the robot. That is, in the related art, it is required to manufacture different extraction containers respectively for a specific shape and size. For the radioactive sample 30 with smaller size, even if the extraction container matched with the radioactive sample is manufactured, the size of the extraction container is too small, the extraction container is difficult to position when being grabbed and transferred by a mechanical arm, and the transferring difficulty is greatly improved. Moreover, for a radioactive sample 30 of a smaller size, the efficiency of the extraction operation performed on the radioactive sample 30 alone is too low during the radioactive gas extraction process.

In the present application, since the partition 26 is detachably mounted on the inner case 20, the number of samples to be contained can be increased by appropriately setting the size and number of the through holes in the partition 26. Therefore, the manipulator is very convenient to position when the manipulator is used for grabbing; and when the extraction gas is used for extracting the radioactive gas, a plurality of samples can be extracted simultaneously, so that the utilization rate and the extraction efficiency of the extraction gas are greatly improved.

In the illustrated embodiment, the number of through holes of the partition 26 is 19, and the 19 through holes are the same in shape and size. Of course, in other embodiments, the number of through holes of the partition 26 may be 1, 2, 3, 5, 8, 10, 20, etc.

Since the structures of the plurality of radioactive samples 30 are sometimes not identical, in some embodiments of the present application, the shapes of the plurality of through holes of the partition 26 may not be identical, for example, some of the through holes are circular and some of the through holes are rectangular; and/or some of the through holes may have a cross-section in the shape of a hexagon. In addition, the through holes may not be exactly the same size, for example, the diameter of a portion of the through holes may be larger and the diameter of another portion of the through holes may be smaller to accommodate radioactive samples 30 of different shapes and/or sizes.

In some embodiments, the number of partitions 26 may be 2, 3, 4, 6, etc. These partitions 26 may be equally spaced in the axial direction of the inner cylinder 22.

The first half cylinder 221 and the second half cylinder 222 are provided with a plurality of fifth positioners 224 in the axial direction; the outer circumferential surface of each partition portion 26 is provided with a second positioning fitting portion 261, and the second positioning fitting portion 261 fits with the fifth positioning portion 224 to detachably mount the partition portion 26 on the first half cylinder 221 and the second half cylinder 222. In such an embodiment, loading radioactive samples 30 of different sizes may be achieved by installing partitions 26 of through holes of different sizes, thereby making the radioactive gas extraction container 1 suitable for loading radioactive samples 30 of different sizes.

In some embodiments, the fifth positioning portion 224 is a positioning ring extending circumferentially on the first half cylinder 221 and the second half cylinder 222, and the second positioning fitting portion 261 is a positioning groove extending circumferentially of the partition portion 26; the partition 26 is mounted on the first half cylinder 221 and the second half cylinder 222 by inserting the positioning ring into the positioning groove.

In other embodiments, the fifth positioning portion 224 is a positioning ring groove extending in the circumferential direction on the first half cylinder 221 and the second half cylinder 222, and the second positioning fitting portion 261 is a positioning ring extending in the circumferential direction of the partition portion 26; the partition 26 is mounted on the first and second half-

cylinders

221 and 222 by inserting the positioning ring into the positioning ring groove.

Referring to fig. 6, in some embodiments, the partition 26 may be formed by splicing a plurality of plate bodies 262, wherein a portion of the radial surface of each plate body 262 forms the second positioning engagement portion 261 and another portion of the radial surface forms a splicing surface with the adjacent plate body 262. Thus, it is very convenient to assemble the inner case 20 by a robot and to install the radioactive sample 30.

Referring to fig. 6, each splicing face includes: the circular arc portion 263 and the splicing matching portion 264, two adjacent plate bodies 262 are spliced together through the splicing matching portion 264, and the circular arc portion 263 facing the two adjacent plate bodies 262 jointly form a through hole of the partition portion 26.

The inner housing 20 further includes: and a support portion 25 connected to the first inner end cap 23 and the second inner end cap 24, wherein the joint surface of at least one plate 262 of the partition portion 26 is fixedly connected to the support portion 25. The upper and lower ends of the support portion 25 are respectively screw-connected to the first inner end cap 23 and the second inner end cap 24.

How to assemble the inner case 20 using the robot will be briefly described with reference to fig. 6. As shown in fig. 6, the first half-cylinder 221 may be horizontally placed, the first plate 2621 of each partition 26 is first mounted on the first half-cylinder 221 (i.e., the second positioning matching portion 261 of the first plate 2621 is mounted on the fifth positioning portion 224 of the first half-cylinder 221), and then three radioactive samples are placed on the 3 circular arc portions 263 at the upper end of the first plate 2621; then, the second plate 2622 of each partition 26 is mounted on the first cartridge 221, and is spliced with the corresponding first plate 2621, and then four radioactive samples are placed on the 4 circular arc portions 263 at the upper end of the second plate 2622; then, the third plate 2623 of each partition 26 is mounted on the first half cylinder 221 and is spliced with the corresponding second plate 2622, then a support 25 is placed on the circular arc portion 263 in the middle of the upper end of the third plate 2623, the support 25 is welded with the circular arc portion 263 bearing the support, and then four radioactive samples are placed on the remaining 4 circular arc portions 263 at the upper end of the third plate 2623; the fourth plate 2624 of each partition 26 is spliced to the corresponding third plate 2623, the circular arc portion 263 of the fourth plate 2624 facing the support portion 25 is welded to the support portion 25, and then four radioactive samples are placed on the remaining 4 circular arc portions 263 at the upper end of the fourth plate 2624; splicing the fifth plate 2625 of each partition 26 to the corresponding fourth plate 2624, and then placing three radioactive samples on the 3 circular arc portions 263 at the upper end of the fifth plate 2625; the sixth plate body 2626 of each partition 26 is spliced to the corresponding fifth plate body 2625, the second half cylinder 222 is covered, the second positioning matching parts 261 of the fourth plate body 2624, the fifth plate body 2625 and the sixth plate body 2626 are mounted on the fifth positioning parts 224 of the second half cylinder 222, the first inner end cover 23 and the second inner end cover 24 are covered at the two axial ends of the two half cylinders, and the first inner end cover 23 and the second inner end cover 24 are screwed with the two axial ends of the support part 25 by rotating the first inner end cover 23 and the second inner end cover 24, so that the inner housing 20 is assembled into a whole.

As for other components of the radioactive gas extraction container 1, those skilled in the art can know how to assemble the container based on the structures and connection relationships disclosed in the present application, and details thereof are not described herein.

As is apparent from the above description, the radioactive gas extraction container 1 of the embodiment of the present invention is structured to facilitate the fabrication assembly by a robot. The method is particularly suitable for storing the radioactive sample 30 with strong radioactivity, can effectively reduce the operation difficulty of the manipulator, reduces the probability of misoperation of the manipulator, and is favorable for extracting the radioactive gas.

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

1. A radioactive gas extraction container, comprising:

the device comprises an outer shell (10), wherein a channel (11) which is through up and down is formed in the outer shell, and a sample accommodating cavity (21) which can accommodate at least one radioactive sample (30) is arranged in the channel (11); and

two sealing devices (17) arranged in the channel (11) and respectively positioned at the upper side and the lower side of the sample containing cavity (21) and used for sealing the sample containing cavity (21) so as to prevent radioactive gas released by the radioactive sample (30) in the sample containing cavity (21) from flowing into the external environment; the sealing means (17) is configured to be capable of forming an aperture under an aperture operation of an external aperture device to place the sample receiving chamber (21) in communication with an external environment through the aperture to enable the radioactive gas to be extracted;

the radioactive gas extraction container further comprises: an inner housing (20) disposed inside the outer housing (10), the sample receiving chamber (21) being defined by the inner housing (20);

the inner shell (20) comprises an inner cylinder (22),

the inner cylinder body (22) is formed by splicing a first half cylinder (221) and a second half cylinder (222) along the circumferential direction;

the inner housing (20) further comprises: a plurality of partitions (26) detachably connected to the first half cylinder (221) and the second half cylinder (222) in the axial direction, each partition (26) being provided with a plurality of through holes; each of the radioactive samples (30) passes through the through-hole of each of the partitions (26) in turn to be held by the plurality of partitions (26);

the first half cylinder (221) and the second half cylinder (222) are provided with a plurality of fifth positioning parts (224) along the axial direction;

a second positioning and matching part (261) is arranged on the outer circumferential surface of each partition part (26), and the second positioning and matching part (261) is matched with the fifth positioning part (224) to detachably install the partition part (26) on the first half cylinder (221) and the second half cylinder (222);

the separating part (26) is formed by splicing a plurality of plate bodies (262), wherein one part of the radial surface of each plate body (262) forms the second positioning matching part (261), and the other part of the radial surface forms a splicing surface spliced with the adjacent plate body (262);

each splicing surface comprises: circular arc portion (263) and concatenation cooperation portion (264), two adjacent plate bodies (262) pass through concatenation cooperation portion (264) are spliced together, and two adjacent plate bodies (262) a circular arc portion (263) that faces mutually form a through-hole of partition portion (26) jointly.

2. The radioactive gas extraction container according to claim 1,

the outer shell (10) is provided with a first grabbing part (15) used for being matched with a mechanical arm to convey the radioactive gas extraction container to the interior of a radioactive gas extraction device (40), wherein the radioactive gas extraction device (40) can extract the radioactive gas in the sample accommodating cavity (21) by using extraction gas.

3. The radioactive gas extraction container of claim 2,

the lower end of the outer shell (10) is provided with a positioning matching part which is used for matching with a positioning part (44) of the radioactive gas extraction device (40) so as to position the radioactive gas extraction container in the radioactive gas extraction device (40).

4. The radioactive gas extraction container according to claim 3,

the lower end of the outer shell (10) is also provided with a sealing matching part (16) which is used for being in sealing matching with an outlet part (43) of the radioactive gas extraction device (40) so as to enable the lower end opening of the channel (11) to be communicated with the outlet part (43), thus the extracted gas flows into the sample containing cavity (21) through the upper end opening of the channel (11) and carries the radioactive gas to the outlet part (43).

5. The radioactive gas extraction container according to claim 4,

the outer casing (10) comprises: the device comprises an outer cylinder body (12), a first outer end cover (13) and a second outer end cover (14) which are arranged at the upper end and the lower end of the outer cylinder body (12); the first outer end cover (13) and the second outer end cover (14) are provided with through holes; the outer cylinder (12), the first outer end cap (13) and the second outer end cap (14) together form the channel (11).

6. The radioactive gas extraction container of claim 5,

the first catching portion (15) is provided on the first outer end cap (13).

7. The radioactive gas extraction container according to claim 6,

the sealing engagement portion (16) and the locating engagement portion are provided on the second outer end cap (14).

8. The radioactive gas extraction container of claim 7,

the outer cylinder (12) comprises: the cylinder comprises a first cylinder body (121) and a second cylinder body (122) which are spliced along the axial direction, wherein the first outer end cover (13) is connected with the upper end of the first cylinder body (121), and the second outer end cover (14) is connected with the lower end of the second cylinder body (122).

9. The radioactive gas extraction container according to claim 8,

the radial outer surface of the lower portion of the first cylinder (121) is formed with threads to be engaged with the threads of the radial inner surface of the upper portion of the second cylinder (122).

10. The radioactive gas extraction container of claim 9,

a first positioning portion 1211 is formed on a radially outer surface of a lower portion of the first cylindrical body 121, and abuts against an upper end of the second cylindrical body 122.

11. The radioactive gas extraction container of claim 10,

the first positioning portion (1211) is a stepped surface provided on a radially outer surface of a lower portion of the first cylinder (121).

12. The radioactive gas extraction container of claim 8,

the first outer end cap (13) includes: an upper cover body (131) formed with a through hole, and a first extension portion (132) extending upward from the upper cover body (131), wherein the first extension portion (132) defines the first catching portion (15).

13. The radioactive gas extraction container of claim 12,

the first outer end cap (13) further includes: a second extension part (133) extending downward from the upper cap body (131), wherein a radial outer surface of the second extension part (133) is formed with a screw thread to be engaged with a screw thread of a radial inner surface of an upper portion of the first cylinder (121).

14. The radioactive gas extraction container of claim 13,

the radial outer surface of the second extending part (133) above the thread is also provided with a second positioning part (1331) which is used for being abutted with the upper end of the first cylinder (121).

15. The radioactive gas extraction container of claim 13,

the outer cylinder (12) further comprises: a third cylinder (123), a third positioning part (1231) is arranged on the radial outer surface of the third cylinder (123),

and the radial inner surface of the upper part of the first cylinder (121) is provided with a first positioning matching part (1212), and the third cylinder (123) is installed on the first cylinder (121) by clamping the third positioning part (1231) between the first positioning matching part (1212) and the lower end of the second extension part (133).

16. The radioactive gas extraction container of claim 15,

the outer cylinder (12) further comprises: a gasket (124), the gasket (124) being sandwiched between a lower end of the second extension (133) and an upper end of the third cylinder (123).

17. The radioactive gas extraction container of claim 15,

the outer cylinder (12) further comprises: and a seal ring (125) provided between the lower surface of the third positioning portion (1231) of the third cylinder (123) and the first positioning engagement portion (1212) of the first cylinder (121).

18. The radioactive gas extraction container of claim 15,

one of the two sealing devices (17) is arranged at the lower end of the third cylinder (123); the other is arranged on the second outer end cap (14).

19. The radioactive gas extraction container of claim 8,

the second outer end cap (14) comprises: the lower cover comprises a lower cover body (141) formed with a through hole, and a third extending part (142) extending upwards from the lower cover body (141), wherein the outer surface of the third extending part (142) is formed with threads to be connected with the threads of the radial inner surface of the lower part of the second cylinder (122).

20. The radioactive gas extraction container of claim 19,

and a fourth positioning part (1421) is further arranged on the radial outer surface of the third extending part (142) below the thread thereof and is used for being abutted against the lower end of the second cylinder (122).

21. The radioactive gas extraction container according to claim 20,

the fourth positioning portion (1421) is a step surface provided on the radial outer surface of the third extending portion (142).

22. The radioactive gas extraction container of claim 19,

the second outer end cap (14) further comprises: a conical surface gradually expanding from bottom to top and connected between the lower cover body (141) and the third extension part (142); wherein the conical surface forms the sealing engagement (16).

23. The radioactive gas extraction container of claim 22,

the second outer end cap (14) further comprises: a fourth extension (143) extending downwardly from the lower cap body (141), the fourth extension (143) defining the positioning engagement portion.

24. The radioactive gas extraction container of claim 1,

the radial surface in upper and lower both ends of interior casing (20) is equipped with inner shell location portion (223) respectively, the radial internal surface of shell body (10) is equipped with two shell location cooperation portions (18) correspondingly, through shell location cooperation portion (18) with inner shell location portion (223) cooperate with in order to incite somebody to action interior casing (20) location is in inside shell body (10).

25. The radioactive gas extraction container of claim 24,

the inner shell positioning portion (223) and the outer shell positioning fitting portion (18) each include an annular tapered surface extending in the circumferential direction.

26. The radioactive gas extraction container of claim 24, wherein the inner housing (20) further includes: the first inner end cover (23) and the second inner end cover (24) are mounted at the upper end and the lower end of the inner cylinder body (22), and a plurality of through holes which penetrate through the first inner end cover (23) and the second inner end cover (24) are formed in the first inner end cover and the second inner end cover and used for allowing gas to flow through.

27. The radioactive gas extraction container of claim 26,

and a filtering part (27) is arranged on the second inner end cover (24) to filter the gas flowing out of the sample containing cavity (21) from the through hole of the second inner end cover (24).

28. The radioactive gas extraction container of claim 27,

an accommodating part is formed on the lower surface of the second inner end cover (24), the filtering part (27) is arranged in the accommodating part, and a fixing part (241) is further arranged in the accommodating part and used for fixing the filtering part (27) in the accommodating part.

29. The radioactive gas extraction container of claim 27,

the filtering part (27) is a porous filtering sheet.

30. The radioactive gas extraction container of claim 26,

the first inner end cover (23) and the second inner end cover (24) are arranged at the upper end and the lower end of the first half cylinder (221) and the second half cylinder (222) in a covering mode.

31. The radioactive gas extraction container of claim 1,

the fifth positioning portion (224) is a positioning ring extending in the circumferential direction on the first half cylinder (221) and the second half cylinder (222), and the second positioning fitting portion (261) is a positioning groove extending in the circumferential direction of the partition portion (26); -mounting the partition (26) on the first half-cartridge (221) and the second half-cartridge (222) by inserting the positioning ring into the positioning groove.

32. The radioactive gas extraction container of claim 30,

the inner housing (20) further comprises: and the supporting part (25) is connected with the first inner end cover (23) and the second inner end cover (24), and the splicing surface of at least one plate body of the partition part (26) is fixedly connected with the supporting part (25).

33. The radioactive gas extraction container of claim 32,

the upper end and the lower end of the supporting part (25) are respectively in threaded connection with the first inner end cover (23) and the second inner end cover (24).

34. The radioactive gas extraction container of claim 26,

and a second grabbing part (231) is formed on the upper surface of the first inner end cover (23) and used for matching with a mechanical hand to lift the inner shell (20).

35. The radioactive gas extraction container of claim 26,

the two inner shell positioning parts (223) are respectively arranged at the lower ends of the first inner end cover (23) and the inner cylinder (22).