CN113539544A - Cladding tube irradiation bearing device and gas filling device and method used for same - Google Patents
Cladding tube irradiation bearing device and gas filling device and method used for same Download PDFInfo
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- CN113539544A CN113539544A CN202110834923.7A CN202110834923A CN113539544A CN 113539544 A CN113539544 A CN 113539544A CN 202110834923 A CN202110834923 A CN 202110834923A CN 113539544 A CN113539544 A CN 113539544A
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- outer sleeve
- irradiation
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- 238000005253 cladding Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims description 9
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000001514 detection method Methods 0.000 claims description 37
- 230000000712 assembly Effects 0.000 claims description 20
- 238000000429 assembly Methods 0.000 claims description 20
- 239000000523 sample Substances 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 6
- 238000009489 vacuum treatment Methods 0.000 claims description 5
- 230000000452 restraining effect Effects 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 2
- 230000005855 radiation Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 39
- 239000000463 material Substances 0.000 description 11
- 239000001307 helium Substances 0.000 description 5
- 229910052734 helium Inorganic materials 0.000 description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 5
- 238000003825 pressing Methods 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K5/00—Irradiation devices
- G21K5/08—Holders for targets or for other objects to be irradiated
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses a cladding tube irradiation bearing device, which comprises: the clamping device comprises an outer sleeve, a clamping assembly and a fixing assembly, wherein an upper end head and a lower end head are fixedly arranged at two ends of the outer sleeve respectively; the clamping assembly is arranged in the outer sleeve, and a cladding tube to be subjected to an irradiation test is arranged in the clamping assembly; the clamping assembly is fixed in the shell pipe through the fixing assembly. The invention fixes the cladding tube to be subjected to the irradiation test in the outer sleeve by the clamping assembly, and achieves the purpose of providing a stable irradiation environment meeting the test requirements for the irradiation sample by arranging the outer sleeve in the hole in the irradiation element. Meanwhile, the sample can be fixed at a specific position of a hole in the element, so that the purpose of ensuring that the irradiation sample meets the parameter requirements of neutrons, temperature and the like is achieved.
Description
Technical Field
The invention relates to the technical field of irradiation of materials for research reactor, in particular to a cladding tube irradiation bearing device and a gas filling device and method for the same.
Background
In order to confirm the irradiation result of the new material in the irradiation environment, and to know the change condition of the internal structure tissue of the material before and after irradiation through the appearance inspection and destructive inspection after irradiation, the irradiation test is a necessary means for realizing the requirements. Therefore, the study of the irradiation performance of the material is crucial to the development and research of new materials
The irradiation device plays a role of bearing an irradiation sample in the material irradiation process as an important device for researching the material performance. With the increase of new materials, the existing irradiation resources are limited, and the research and development period of the new materials is prolonged.
However, in the current irradiation test, the application degree of the holes in the irradiation element is low, so that the waste of the channel resources is caused.
Disclosure of Invention
The invention aims to solve the technical problem that the hole application degree of an irradiation element is low, and aims to provide a cladding tube irradiation bearing device, a gas filling device and a gas filling method for the cladding tube irradiation bearing device, so that the problem of limited irradiation resources is solved.
The invention is realized by the following technical scheme:
a containment tube irradiation carrier comprising:
the outer sleeve is fixedly provided with an upper end head and a lower end head at two ends respectively;
the clamping assembly is arranged in the outer sleeve, and an cladding tube to be subjected to an irradiation test is arranged in the clamping assembly;
and the clamping assembly is fixed in the shell pipe through the fixing assembly.
Specifically, one end of the upper end head, which is located opposite to the outer sleeve, is set as the upper end of the bearing device, and one end of the lower end head, which is located opposite to the outer sleeve, is set as the lower end of the bearing device;
the fixing assembly includes:
the supporting rod is arranged between the clamping component and the lower end head, and two ends of the supporting rod are respectively abutted against the clamping component and the lower end head;
the elastic assembly is arranged between the clamping assembly and the upper end head, and two ends of the elastic assembly are respectively abutted against the clamping assembly and the upper end head.
Preferably, the clamping assembly comprises at least one clamp block assembly, the clamp block assembly comprising:
two arc-shaped clamping plates which can be spliced into a cylindrical structure;
the clamping plate sleeves are fixedly arranged at two ends of the arc-shaped clamping plate and apply a restraining force to the arc-shaped clamping plate;
the cladding tube is arranged between the two arc-shaped clamping plates;
the length of the arc-shaped clamping plate is greater than that of the cladding tube, and the inner diameter of the arc-shaped clamping plate is greater than the outer diameter of the cladding tube.
As an embodiment, if the number of the clamping block assemblies is not less than 2, a plurality of the clamping block assemblies are coaxially arranged, and the clamping assembly further includes:
two-way fixed block, adjacent two the clamp splice subassembly passes through two-way fixed block connects, two-way fixed block includes:
a straight tube inserted into the cladding tube;
and the annular bulge is arranged in the middle of the straight pipe, and the outer annular surface of the annular bulge is corrugated and is in line contact with the inner side of the outer sleeve.
Specifically, the carrying device further comprises a detection assembly for detecting temperature and neutron quantity, and the detection assembly is fixedly arranged inside the outer sleeve;
the number of the detection assemblies is at least two, two ends of one detection assembly are respectively connected with the clamping assembly and the supporting rod, and two ends of the other detection assembly are respectively connected with the clamping assembly and the elastic assembly.
As another embodiment, when the number of the clamping assemblies is not less than two, the number of the detection assemblies is three, the three detection assemblies are respectively arranged at the upper section, the middle section and the lower end of the outer sleeve, and two ends of the detection assembly located at the middle section are respectively connected with two adjacent clamping assemblies.
Specifically, the detection assembly includes:
a detector box;
a detector cover for enclosing the detector box and detachably connecting thereto;
the temperature measuring element is fixedly arranged on the outer side surface of the detector box;
the neutron detection piece is arranged inside the detector box;
wherein, the bottom of detector box and the top of detector lid all are provided with the counter bore, the detection subassembly with connect through one-way fixed block between the centre gripping subassembly, one-way fixed block includes:
one end of the straight rod is inserted into the counter bore of the detection assembly, and the other end of the straight rod is inserted into the cladding tube;
and the circular ring is arranged in the middle of the straight rod, and the outer circular surface of the circular ring is in contact with the inner side surface of the outer sleeve.
Specifically, the elastic assembly includes:
the upper end of the moving rod is inserted into a counter bore in the upper end head and is fixed with the counter bore;
the lower end of the moving rod is inserted into the supporting cylinder and can slide up and down along the supporting cylinder;
the upper end of the elastic piece is fixedly connected with the upper section of the moving rod, and the lower end of the elastic piece is fixedly connected with the upper end of the supporting cylinder.
A gas filling device for a cladding tube irradiation bearing device,
the carrying device further comprises:
the air hole is arranged in the lower end head and is used for communicating the interior of the outer sleeve;
and plugging of the pores;
the gas filling device includes:
the bearing device is arranged in the barrel, and the upper end head is connected with the bottom cover;
the first end of the driving rod penetrates through the end cover and extends into the barrel, and the plug is installed on the driving rod;
the driving nut is in threaded connection with the driving rod and drives the driving rod to move towards the inside of the cylinder body and block the air hole;
and one end of the air pipe opening is communicated with the inside of the cylinder body, and the other end of the air pipe opening is communicated with the vacuum pump/the gas bottle.
A gas filling method of a cladding tube irradiation carrying device uses the gas filling device of the cladding tube irradiation carrying device, and comprises the following specific steps:
after the assembly of the irradiation bearing device of the cladding tube is finished, welding an upper end head and a lower end head with the outer sleeve;
opening the end cover, and fixing the upper end head with the bottom cover;
installing the plug on the driving rod, and arranging the plug corresponding to the air hole and reserving a gap;
the interior of the cylinder is communicated with a vacuum pump and a gas bottle by arranging a plurality of gas pipe openings or connecting a three-way valve;
vacuumizing the interior of the cylinder, closing the vacuum pump when the pressure is lower than a set value, and filling gas into the cylinder through a gas bottle;
when the pressure value is higher than the set value, closing the gas bottle and carrying out vacuum treatment on the cylinder through the vacuum pump;
repeating the vacuum treatment operation and the gas filling operation to finally fill the cylinder with gas;
the driving rod moves inwards and inserts the plug into the air hole;
the end cap is opened, the carrier is removed and the plug is welded.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the cladding tube to be subjected to the irradiation test is fixed in the outer sleeve through the clamping assembly, and the outer sleeve is arranged in the hole in the irradiation element, so that a stable irradiation environment meeting the test requirements is provided for the irradiation sample. Meanwhile, the sample can be fixed at a specific position of a hole in the element, so that the purpose of ensuring that the irradiation sample meets the parameter requirements of neutrons, temperature and the like is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a containment tube radiation support apparatus according to the present invention.
Fig. 2 is a view of part i of fig. 1.
Fig. 3 is a partial view of fig. 1 ii.
Fig. 4 is a partial view of iii of fig. 1.
FIG. 5 is a partial view of IV in FIG. 1.
Fig. 6 is a schematic view of the structure of the elastic assembly according to the present invention.
Fig. 7 is a schematic view of the structure of the lower tip according to the present invention.
Fig. 8 is a schematic structural view of an upper head according to the present invention.
Fig. 9 is a schematic structural diagram of a bidirectional fixed block according to the present invention.
Fig. 10 is a schematic structural view of a unidirectional fixed block according to the present invention.
FIG. 11 is a schematic view of a cleat sleeve according to the invention.
Fig. 12 is a schematic structural view of a probe assembly according to the present invention.
FIG. 13 is a cross-sectional view of a gas filling apparatus for a containment tube irradiation bearing apparatus in accordance with the present invention.
Fig. 14 is a schematic structural view of a gas filling device for a cladding tube irradiation bearing device according to the present invention.
Reference numerals: 1-upper end, 2-elastic component, 3-detection component, 4-cladding tube, 5-clamping sleeve, 6-bidirectional fixing block, 7-arc clamping plate, 8-unidirectional fixing block, 9-outer sleeve, 10-supporting rod, 11-lower end, 101-driving rod, 102-driving nut, 103-end cover, 104-barrel, 105-supporting table, 106-support, 107-air pipe orifice, 108-bottom cover, 21-moving rod, 22-elastic component, 23-pressing block, 24-supporting barrel, 31-detector cover, 32-temperature measuring element and 33-detector box.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the invention.
It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
In the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
A containment tube irradiation carrier comprising: the device comprises an outer sleeve 9, a clamping assembly and a fixing assembly, wherein an upper end head 1 and a lower end head 11 are fixedly arranged at two ends of the outer sleeve 9 respectively; the clamping assembly is arranged in the outer sleeve 9, and the cladding tube 4 to be subjected to the irradiation test is arranged in the clamping assembly; the clamping assembly is fixed in the shell pipe through the fixing assembly.
The outer sleeve 9 is sealed through the upper end head 1 and the lower end head 11, then the cladding tube 4 is arranged in the clamping assembly, the cladding tube 4 is fixed in a certain position of the outer sleeve 9 through the matching of the clamping assembly and the fixing assembly, so that the sample of the cladding tube 4 to be irradiated is fixed at a certain axial position, the position of the sample in the irradiation device is not changed, and the irradiation test of the cladding tube 4 is realized.
In addition, since this embodiment is for insertion into the hole in the element, it is necessary to ensure that the diameter of the outer sleeve 9 is not greater than the inner diameter of the hole in the element.
Example two
This embodiment includes the structure of the first embodiment.
The bearing device is vertically arranged in the element middle hole, so that the upper end of the bearing device needs to be hoisted and fixed to fix the position of the whole bearing device, the end where the upper end head 1 is located is set as the upper end of the bearing device, and the end where the lower end head 11 is located is set as the lower end of the bearing device.
Namely, one end of the upper end head 1 corresponding to the outer sleeve 9 is set as the upper end of the bearing device, and one end of the lower end head 11 corresponding to the outer sleeve 9 is set as the lower end of the bearing device;
the fixing assembly includes a support rod 10 and an elastic assembly 2.
The supporting rod 10 is arranged between the clamping component and the lower end head 11, and two ends of the supporting rod 10 are respectively abutted against the clamping component and the lower end head 11;
elastic component 2 sets up between centre gripping subassembly and top end 1, and elastic component 2's both ends lean on with centre gripping subassembly and top end 1 respectively.
This is achieved by providing a fixing assembly, since it is necessary to fix the clamping assembly stably within the outer sleeve.
Meanwhile, in order to stably connect the support rod 10 with the lower end head 11, a counter bore is formed in the lower end head 11, and the lower end of the support rod 10 is inserted into the counter bore to realize fixation.
Similarly, in order to stably connect the elastic component 2 with the upper end head 1, a counter bore is arranged on the upper end head 1, and the upper end of the elastic component 2 is inserted into the counter bore to realize fixation.
In the present embodiment, the connection between the support rod 10 and the clamping component and the connection between the elastic component 2 and the clamping component can be various, such as:
1. counterbores are also formed at both ends of the clamping assembly, and the support rod 10 and the elastic assembly 2 are inserted into the clamping assembly, respectively, thereby achieving fixation.
2. Directly realize fixing through the mode that leans on, set up the distance between the upper end of bracing piece 10 and the lower extreme of elastic component 2 to be not more than the length of centre gripping subassembly to make elastic component 2 be in the state of slight compression, realize fixedly.
The elastic component 2 is arranged in the embodiment, the reason is that the clamping component and the cladding tube 4 can expand when irradiated in the pile, and the displacement of the clamping component can be counteracted by the elastic component 2, so that the safety of the device is ensured.
Two examples are provided, as follows:
1. the elastic component 2 comprises a moving block, a supporting block and an elastic part 22, two ends of the elastic part 22 are fixedly connected with the moving block and the supporting block respectively, the moving block is fixedly connected with the upper end head 1, and the supporting block is connected with or abutted against the clamping component.
With the above structure, when the clamping assembly is extended, the supporting block moves upwards, and then the elastic member 22 is compressed, thereby shortening the distance between the moving block and the supporting block.
However, the structure has certain problems, namely the moving block and the supporting block are not coaxial, so that the situation of deviation occurs, and the structure is optimized as follows.
2. The elastic member 2 includes: a travel bar 21, a support cylinder 24 and an elastic member 22.
The upper end of the movable rod 21 is inserted into a counter bore in the upper end head 1 and fixed with the counter bore;
the lower end of the movable rod 21 is inserted into the support cylinder 24 and can slide up and down along the support cylinder 24;
the upper end of the elastic part 22 is fixedly connected with the upper section of the movable rod 21, and the lower end of the elastic part 22 is fixedly connected with the upper end of the support cylinder 24.
The upper end of the moving rod 21 is connected with the counter bore in the upper end head 1, the lower end of the supporting cylinder 24 is connected with or abutted against the clamping assembly, the moving block and the supporting block are optimized, the moving block and the supporting block are abstracted to be the rod body and the cylinder body 104, the moving rod 21 can slide up and down in the supporting cylinder 24, the function of guiding is achieved through the moving rod 21 and the supporting cylinder 24 which are coaxially arranged, and the situation of deviation is avoided.
Meanwhile, in order to facilitate the connection of the elastic member 22, an annular plate may be fixedly disposed on the upper portion of the moving rod 21, and a pressing block 23 may be fixedly disposed on the upper end of the supporting rod 10, so that the elastic member 22 is fixedly connected between the annular plate and the pressing block 23.
The resilient member 22 can be of various configurations, such as: springs, resilient metal sheets, and the like.
The diameter of the supporting cylinder 24 is larger than the diameter of the moving rod 21, and the pressing block 23 is provided with a hole, the diameter of the hole is larger than the diameter of the moving rod 21 and smaller than the outer diameter of the elastic part 22.
EXAMPLE III
The present embodiment includes the structures of the first embodiment and the second embodiment.
The clamping assembly comprises at least one clamping block assembly, and the clamping block assembly comprises two arc-shaped clamping plates 7 and a clamping plate sleeve 5 which can be spliced into a cylindrical structure.
The cladding tube 4 is arranged between the two arc-shaped clamping plates 7; the fixing of the cladding tube 4 is realized through the arc-shaped clamping plates 7 which can form a cylinder, the length of each arc-shaped clamping plate 7 is greater than that of the cladding tube 4, the cladding tube 4 can axially expand in the arc-shaped clamping plates 7 after irradiation, the length is not too large, and in general, the length of each arc-shaped clamping plate 7 is 0.5-1 mm longer than that of the cladding tube 4.
The inner diameter of the arc-shaped jaws 7 is larger than the outer diameter of the cladding tube 4, but it is ensured that the inner side of the arc-shaped jaws 7 abuts the cladding tube 4, i.e. the radial expansion of the cladding tube 4 is not influenced too much, while the cladding tube 4 is kept from moving too much within the arc-shaped jaws 7.
The clamping plate sleeves 5 are fixedly arranged at two ends of the arc-shaped clamping plate 7 and apply restraining force to the arc-shaped clamping plate 7; realize becoming a tubular structure with arc splint 7 concatenation through setting up splint sleeve 5, and the internal diameter of splint sleeve 5 is less than 0.05mm with the clearance of arc splint 7 external diameter, in addition in order to avoid installing back cladding tube 4 from arc splint 7 interior roll-off, can set up the ring in the one end of splint sleeve 5 to set up the internal diameter of ring into the external diameter that is less than cladding tube 4, thereby can increase the stability of cladding tube 4.
Meanwhile, an annular cavity is required to be formed between the outer side face of the arc-shaped clamping plate 7 and the inner side face of the outer sleeve 9, and the preferred thickness of the cavity is 0.2-0.3 mm.
During testing, the cavity is filled with protective gas to form an annular gas protective layer, so that the temperature requirement of the test is met.
Example four
This embodiment is an extension of the third embodiment, in which the number of clamping assemblies is one, i.e. only one cladding tube 4 can be tested at a time, while in this embodiment the number of cladding tubes 4 is increased to at least two, so that the tests can be performed in sequence.
The quantity of clamp splice subassembly is for being no less than 2, the coaxial setting of a plurality of clamp splice subassemblies, and the centre gripping subassembly still includes two-way fixed block 6, and two adjacent clamp splice subassemblies are connected through two-way fixed block 6.
Because a plurality of clamping components are arranged, a plurality of clamping block components need to be connected through the bidirectional fixing block 6, and the bidirectional fixing block 6 can realize the purpose of coaxially connecting the two clamping block components for inserting into the straight pipe in the cladding pipe 4.
In order to fix the positions of the two-way fixing block 6 and the outer sleeve 9, the annular bulge is arranged in the middle of the straight pipe, the outer annular surface of the annular bulge is corrugated and is in line contact with the inner side of the outer sleeve 9, and the purpose of line contact is to ensure that the arc-shaped clamping plate 7 and the inner side of the outer sleeve 9 form a cavity for filling protective gas.
EXAMPLE five
The present embodiment includes the structures of the first embodiment, the second embodiment, and the third embodiment.
In order to detect the temperature detection and the neutron fluence of the irradiation test, the bearing device also comprises a detection component 3 for detecting the temperature and the neutron fluence, and the detection component 3 is fixedly arranged in the outer sleeve;
the number of the detection assemblies 3 is at least two, two ends of one detection assembly 3 are respectively connected with the clamping assembly and the supporting rod 10, and two ends of the other detection assembly 3 are respectively connected with the clamping assembly and the elastic assembly 2.
Namely, the detection assembly 3 is arranged at the upper end and the lower end of the outer sleeve 9, and the temperature and the neutron fluence at the two ends of the outer sleeve 9 are detected.
The probe assembly 3 includes: the neutron detector comprises a detector box 33, a temperature measuring element 32, a neutron detection piece and a detector cover 31 which is used for sealing the detector box 33 and is detachably connected with the detector box; the temperature measuring element 32 is fixedly arranged on the outer side surface of the detector box 33, and the neutron detection piece is arranged in the detector box 33;
the fixation of the neutron detection piece is realized by arranging the detector box 33 and the detector cover 31.
The number of the temperature measuring elements 32 can be multiple, and the temperature measuring elements 32 are not located outside the detector box 33 at equal intervals along the central axis of the detector box 33, and in practice, the temperature measuring elements 32 with different melting points and the temperature measuring elements 32 with different numbers can be selected according to the temperature requirement.
For example: the temperature measuring element 32 is a metal wire, the melting points of the temperature measuring wires are different, and a plurality of circular grooves are formed in the outer side of the detector box 33 and used for mounting the temperature measuring wires.
Another example is: the temperature measuring element 32 can also be a temperature sensor, and a plurality of circular grooves are formed on the outer side of the detector box 33 and used for mounting the temperature sensor.
The bottom of the detector box 33 and the top of the detector cover 31 are both provided with counter bores, and the outer side of the bottom of the detector box 33 is processed with positioning ribs. The detection component 3 is connected with the clamping component through a one-way fixing block 8,
because the detection assembly 3 is arranged at the two ends of the clamping assembly, the clamping assembly needs to be fixed, a fixing scheme is provided, and a unidirectional fixing block 8 is adopted, wherein the unidirectional fixing block 8 is a straight rod, one end of the straight rod is inserted into a counter bore of the detection assembly 3, and the other end of the straight rod is inserted into the cladding tube 4;
meanwhile, in order to avoid the excessive movement of the straight rod in the counter bore and the cladding tube 4, a circular ring is arranged in the middle of the straight rod, the outer circular surface of the circular ring is in contact with the inner side surface of the outer sleeve 9, and the annular side surface of the circular ring is respectively attached to the clamping assembly and the detection assembly 3.
EXAMPLE six
The present embodiment includes the structure of the fifth embodiment, and it is to one optimization of the fifth embodiment, has set up a plurality of centre gripping subassemblies promptly and has made, when the quantity of centre gripping subassembly is not less than two, the quantity of surveying subassembly 3 is three, and three surveying subassembly 3 sets up upper segment, middle section and the lower extreme of outer sleeve respectively, and the both ends that are located the surveying subassembly 3 in middle section are connected with two adjacent centre gripping subassemblies respectively.
In this embodiment, as shown in fig. 1, there are two clamping assemblies, three detection assemblies 3, and the clamping assemblies and the detection assemblies 3 are sequentially arranged at intervals and are arranged at three positions, namely, the upper, middle and lower positions of the outer sleeve 9(9), and at least one measuring point for neutron fluence and at least three measuring points for temperature are arranged at the same position.
In addition, three ribs are machined axially outside the outer sleeve 9 for increased strength.
EXAMPLE seven
Since an inert gas needs to be injected into the outer sleeve 9 for protecting the whole device before the irradiation test is performed, the present embodiment provides a gas filling device for a cladding tube irradiation carrying device.
For the use of the gas filling device, it is necessary to provide air holes and blockages on the carrier device.
And the air hole is arranged in the lower end head 11 and is used for communicating the interior of the outer sleeve 9, exhausting air in the outer sleeve 9 and introducing inert gas.
In general, the air hole is a stepped hole which is communicated with the inside and the outside of the outer sleeve 9, and the aperture of the end face of the lower end 11 which is not connected with the outer sleeve 9 is less than 1 mm.
The stepped hole is mainly used for final shielding gas seal welding of the device, and during testing, the device is guaranteed to be filled with shielding gas.
The blocking of the blocking air hole is used for closing the whole bearing device after the injection of the inert gas is finished.
The gas filling device includes a cylinder 104, a drive rod 101, a drive nut 102, and a gas nozzle 107.
An end cover 103 and a bottom cover 108 are respectively fixedly arranged at two ends of the cylinder 104, the bearing device is arranged in the cylinder 104, and the upper end head 1 is connected with the bottom cover 108; in order to stably connect the carrying device with the bottom cover 108, a connecting hole is formed in the inner side surface of the bottom cover 108, and the upper head 1 can be installed in the connecting hole to be fixed.
In actual use, the carrier device may be required to be disposed coaxially with the cylinder 104, and therefore, for the purpose of this, a plurality of support bases 105 may be provided inside the cylinder 104, the carrier device may be supported by the support bases 105, and a holder 106 may be provided outside the cylinder 104 for fixing the entire gas filling device.
The first end of the driving rod 101 penetrates through the end cover 103 to extend into the cylinder 104, the driving rod 101 is mounted on the driving rod 101 in a blocking mode, the driving nut 102 is in threaded connection with the driving rod 101, and the driving rod 101 is driven to move towards the inside of the cylinder 104 and block the air hole;
by rotating the driving nut 102, the driving rod 101 may be moved inward, so as to perform the plugging operation, and the following gas filling method may be specifically referred to.
One end of the gas tube port 107 communicates with the interior of the barrel 104, and the other end of the gas tube port 107 communicates with a vacuum pump/gas bottle.
A plurality of gas nozzles 107 may be provided and connected to a vacuum pump and a gas bottle, respectively, to perform a gas filling operation.
It is also possible to provide 1 air pipe port 107 and realize the connection between the vacuum pump and the air bottle through the three-way valve.
Example eight
The embodiment provides a gas filling method of a gas filling device of a cladding tube irradiation carrying device, which comprises the following specific steps:
s1, after the assembly of the cladding tube irradiation bearing device is completed, welding the upper end 1 and the lower end 11 with the outer sleeve 9, and performing qualified inspection on welding seams;
s2, open the end cap 103, fix the top end 1 with the bottom cap 108, and place the whole carrier on the support platform 105.
S3, installing the plug on the driving rod 101, and arranging the plug corresponding to the air hole and keeping a gap;
s4, communicating the interior of the cylinder 104 with a vacuum pump and a gas bottle (a helium bottle is adopted in the embodiment) by arranging a plurality of gas pipe ports 107 or connecting a three-way valve;
s5, turning on a vacuum pump to vacuumize the interior of the cylinder 104, turning off the vacuum pump when the pressure is lower than a set value (150KPa), and filling helium into the cylinder 104 through a helium bottle;
s6, when the pressure value is higher than the set value (1.5atm), closing the helium bottle and carrying out vacuum treatment on the cylinder 104 again through the vacuum pump;
s7, repeating the operations of the steps S6 and S7 for 5-6 times, and finally filling the cylinder 104 with helium;
and S8, rotating the driving nut 102 to enable the driving rod 101 to move inwards, inserting the plug into the air hole, enabling the distance between the plug and the air hole to be larger than 2mm, and enabling the plug to be in interference fit with the air hole of the lower end head 11.
S9, opening the end cap 103, removing the carrier and quickly welding the plug to the lower end 11, and inspecting the weld. .
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of description and are not intended to limit the scope of the invention. It will be apparent to those skilled in the art that other variations or modifications may be made on the above invention and still be within the scope of the invention.
Claims (10)
1. A containment tube irradiation carrier, comprising:
the outer sleeve is fixedly provided with an upper end head and a lower end head at two ends respectively;
the clamping assembly is arranged in the outer sleeve, and an cladding tube to be subjected to an irradiation test is arranged in the clamping assembly;
and the clamping assembly is fixed in the shell pipe through the fixing assembly.
2. The cladding tube irradiation carrier of claim 1, wherein the end of said upper end head opposite to said outer sleeve is defined as an upper end of said carrier, and the end of said lower end head opposite to said outer sleeve is defined as a lower end of said carrier;
the fixing assembly includes:
the supporting rod is arranged between the clamping component and the lower end head, and two ends of the supporting rod are respectively abutted against the clamping component and the lower end head;
the elastic assembly is arranged between the clamping assembly and the upper end head, and two ends of the elastic assembly are respectively abutted against the clamping assembly and the upper end head.
3. The cladding tube irradiation carrier of claim 2, wherein said clamping assembly comprises at least one clamping block assembly, said clamping block assembly comprising:
two arc-shaped clamping plates which can be spliced into a cylindrical structure;
the clamping plate sleeves are fixedly arranged at two ends of the arc-shaped clamping plate and apply a restraining force to the arc-shaped clamping plate;
the cladding tube is arranged between the two arc-shaped clamping plates;
the length of the arc-shaped clamping plate is greater than that of the cladding tube, and the inner diameter of the arc-shaped clamping plate is greater than the outer diameter of the cladding tube.
4. The cladding tube irradiation carrier of claim 3, wherein if the number of clamping block assemblies is not less than 2, a plurality of clamping block assemblies are coaxially arranged, said clamping assembly further comprising:
two-way fixed block, adjacent two the clamp splice subassembly passes through two-way fixed block connects, two-way fixed block includes:
a straight tube inserted into the cladding tube;
and the annular bulge is arranged in the middle of the straight pipe, and the outer annular surface of the annular bulge is corrugated and is in line contact with the inner side of the outer sleeve.
5. The cladding tube irradiation carrier of claim 3, further comprising a detection assembly for detecting temperature and neutron content, said detection assembly being fixedly disposed within said outer sleeve;
the number of the detection assemblies is at least two, two ends of one detection assembly are respectively connected with the clamping assembly and the supporting rod, and two ends of the other detection assembly are respectively connected with the clamping assembly and the elastic assembly.
6. The cladding tube irradiation carrying device of claim 5, wherein when the number of said clamping assemblies is not less than two, the number of said detecting assemblies is three, three of said detecting assemblies are respectively disposed at the upper section, the middle section and the lower end of said outer sleeve, and both ends of said detecting assembly located at the middle section are respectively connected with two adjacent clamping assemblies.
7. The containment tube irradiation carrier of claim 5 or 6, wherein the probe assembly comprises:
a detector box;
a detector cover for enclosing the detector box and detachably connecting thereto;
the temperature measuring element is fixedly arranged on the outer side surface of the detector box;
the neutron detection piece is arranged inside the detector box;
wherein, the bottom of detector box and the top of detector lid all are provided with the counter bore, the detection subassembly with connect through one-way fixed block between the centre gripping subassembly, one-way fixed block includes:
one end of the straight rod is inserted into the counter bore of the detection assembly, and the other end of the straight rod is inserted into the cladding tube;
and the circular ring is arranged in the middle of the straight rod, and the outer circular surface of the circular ring is in contact with the inner side surface of the outer sleeve.
8. The containment tube radiation load bearing device of claim 2, wherein said resilient assembly comprises:
the upper end of the moving rod is inserted into a counter bore in the upper end head and is fixed with the counter bore;
the lower end of the moving rod is inserted into the supporting cylinder and can slide up and down along the supporting cylinder;
the upper end of the elastic piece is fixedly connected with the upper section of the moving rod, and the lower end of the elastic piece is fixedly connected with the upper end of the supporting cylinder.
9. A gas filling apparatus for a cladding tube irradiation carrying apparatus as claimed in any one of claims 1 to 8,
the carrying device further comprises:
the air hole is arranged in the lower end head and is used for communicating the interior of the outer sleeve;
and plugging of the pores;
the gas filling device includes:
the bearing device is arranged in the barrel, and the upper end head is connected with the bottom cover;
the first end of the driving rod penetrates through the end cover and extends into the barrel, and the plug is installed on the driving rod;
the driving nut is in threaded connection with the driving rod and drives the driving rod to move towards the inside of the cylinder body and block the air hole;
and one end of the air pipe opening is communicated with the inside of the cylinder body, and the other end of the air pipe opening is communicated with the vacuum pump/the gas bottle.
10. A gas filling method of a cladding tube irradiation carrying device, which is characterized by using the gas filling device of the cladding tube irradiation carrying device as claimed in claim 9, and comprises the following steps:
after the assembly of the irradiation bearing device of the cladding tube is finished, welding an upper end head and a lower end head with the outer sleeve;
opening the end cover, and fixing the upper end head with the bottom cover;
installing the plug on the driving rod, and arranging the plug corresponding to the air hole and reserving a gap;
the interior of the cylinder is communicated with a vacuum pump and a gas bottle by arranging a plurality of gas pipe openings or connecting a three-way valve;
vacuumizing the interior of the cylinder, closing the vacuum pump when the pressure is lower than a set value, and filling gas into the cylinder through a gas bottle;
when the pressure value is higher than the set value, closing the gas bottle and carrying out vacuum treatment on the cylinder through the vacuum pump;
repeating the vacuum treatment operation and the gas filling operation to finally fill the cylinder with gas;
the driving rod moves inwards and inserts the plug into the air hole;
the end cap is opened, the carrier is removed and the plug is welded.
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| CN202110834923.7A CN113539544B (en) | 2021-07-23 | 2021-07-23 | Cladding tube irradiation bearing device and gas filling device and method for same |
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| JPH0545495A (en) * | 1991-08-09 | 1993-02-23 | Nippon Nuclear Fuel Dev Co Ltd | Apparatus for irradiation test |
| CN102867554A (en) * | 2012-09-19 | 2013-01-09 | 中国核动力研究设计院 | Modular bushing type irradiation in-pile verification device |
| CN105161149A (en) * | 2015-09-15 | 2015-12-16 | 中国原子能科学研究院 | FMS material irradiation container for experimental fast reactor |
| CN106409365A (en) * | 2016-11-02 | 2017-02-15 | 中国核动力研究设计院 | Independent temperature compensation type material irradiation test device and installation method thereof |
| CN210119980U (en) * | 2019-05-08 | 2020-02-28 | 中广核研究院有限公司 | Irradiation device |
| CN112951473A (en) * | 2021-01-26 | 2021-06-11 | 中国原子能科学研究院 | Irradiation device structure |
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2021
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0545495A (en) * | 1991-08-09 | 1993-02-23 | Nippon Nuclear Fuel Dev Co Ltd | Apparatus for irradiation test |
| CN102867554A (en) * | 2012-09-19 | 2013-01-09 | 中国核动力研究设计院 | Modular bushing type irradiation in-pile verification device |
| CN105161149A (en) * | 2015-09-15 | 2015-12-16 | 中国原子能科学研究院 | FMS material irradiation container for experimental fast reactor |
| CN106409365A (en) * | 2016-11-02 | 2017-02-15 | 中国核动力研究设计院 | Independent temperature compensation type material irradiation test device and installation method thereof |
| CN210119980U (en) * | 2019-05-08 | 2020-02-28 | 中广核研究院有限公司 | Irradiation device |
| CN112951473A (en) * | 2021-01-26 | 2021-06-11 | 中国原子能科学研究院 | Irradiation device structure |
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| CN113539544B (en) | 2023-11-21 |
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