CN216014825U - Fast reactor material irradiation examination assembly - Google Patents
Fast reactor material irradiation examination assembly Download PDFInfo
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- CN216014825U CN216014825U CN202122066108.9U CN202122066108U CN216014825U CN 216014825 U CN216014825 U CN 216014825U CN 202122066108 U CN202122066108 U CN 202122066108U CN 216014825 U CN216014825 U CN 216014825U
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The embodiment of the application provides a subassembly is examined in fast reactor material irradiation, includes: subassembly main part, monitoring stick and irradiation stick, the subassembly main part have accommodation space and with coolant inlet hole and coolant that accommodation space communicates portal, the monitoring stick is placed monitoring devices in the monitoring stick, monitoring stick detachably sets up in the accommodation space, the irradiation stick is in including having the irradiation jar that holds the chamber and placing the sample jar that holds the intracavity, irradiation stick detachably sets up just be located in the accommodation space week side of monitoring stick. The fast reactor material irradiation testing assembly has better applicability.
Description
Technical Field
The utility model relates to a reactor engineering technical field, in particular to subassembly is examined in fast reactor material irradiation.
Background
The sodium-cooled fast reactor (hereinafter referred to as 'fast reactor') is one of the leading edge reactor types of the research in the nuclear industry at present, compared with the existing thermal reactor, the energy of a neutron field in the reactor core of the fast reactor is higher, and the material irradiation performance under the fast neutron field can be researched by utilizing the characteristic.
In order to ensure that the irradiation work of the materials to be tested in the fast reactor is realized, on the premise that the physical and thermal parameters of the reactor core of the reactor are not influenced or are influenced within an acceptable range, the internal part of the fast reactor assembly is changed by a structural part, replaced by materials and the like, the temperature, neutron fluence and other parameters in the material irradiation process are monitored, the irradiation performance data of the irradiation materials in the reactor are obtained, the assembly is ensured to carry out corresponding scientific research work on the premise of meeting the normal function of the reactor core, the fast reactor material irradiation testing assembly needs to be designed, the irradiation work of the irradiation materials in the fast reactor is realized, and the method is also an indispensable link for developing part of novel nuclear fuel and nuclear materials, assembly design and the like.
However, because the fast reactor is developed insufficiently than a hot reactor, the existing fast reactor has less experience of stable operation and irradiation examination, and the whole irradiation examination device needs to be repeatedly designed, researched and manufactured when the irradiation examination work of materials is realized in the fast reactor, so that the research and development period is long, the uncertainty factors are many, the applicability of the device is not strong, and the distribution of scientific research personnel and scientific research resources is influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is a primary object of the embodiments of the present application to provide a fast reactor material irradiation testing assembly with wider applicability.
In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:
the embodiment of the application provides a subassembly is examined in fast reactor material irradiation, includes:
an assembly body having an accommodation space and a coolant inlet hole and a coolant outlet hole communicating with the accommodation space;
the monitoring rod comprises a monitoring device placed in the monitoring rod, and the monitoring rod is detachably arranged in the accommodating space;
the irradiation stick, the irradiation stick is in including having the irradiation jar that holds the chamber and placing hold the sample jar of intracavity, irradiation stick detachably sets up just be located in the accommodation space the week side of monitoring stick.
In one embodiment, the assembly body comprises an operating head, an upper transition joint, an outer sleeve, a lower transition joint, a pin and a pin joint which are connected in sequence, and the accommodating space is formed in the outer sleeve.
In one embodiment, the coolant inlet hole is provided on the pin, and the coolant outlet hole is provided on the operation head.
In one embodiment, the assembly main body further comprises an upper shielding bar, an upper positioning grid plate, a lower shielding bar and a lower positioning grid plate which are arranged in the outer sleeve, wherein the upper positioning grid plate and the lower positioning grid plate are arranged at intervals along the axial direction of the outer sleeve so that the accommodating space is formed at the interval, one end of the upper shielding bar is connected with the upper transition joint, the other end of the upper shielding bar is connected with the upper positioning grid plate, one end of the lower shielding bar is connected with the lower transition joint, and the other end of the lower shielding bar is arranged at an interval with the lower positioning grid plate.
In one embodiment, the irradiation bar comprises a first connecting piece, a second connecting piece and the irradiation tank, wherein the first connecting piece is connected with the upper end of the irradiation tank, the second connecting piece is connected with the lower end of the irradiation tank, the first connecting piece is connected with the upper positioning grid plate, and the second connecting piece is connected with the lower positioning grid plate.
In one embodiment, the monitoring rod comprises a third connecting piece, a fourth connecting piece and a monitoring tank with a containing groove, the third connecting piece is connected with the upper end of the monitoring tank, the fourth connecting piece is connected with the lower end of the monitoring tank, the third connecting piece is connected with the upper positioning grid plate, and the fourth connecting piece is connected with the lower positioning grid plate.
In one embodiment, the monitoring rod is provided with a first cooling hole, and the first cooling hole is communicated with the accommodating groove.
In one embodiment, the irradiation rod is provided with a second cooling hole, and the second cooling hole is communicated with the accommodating cavity.
In one embodiment, the irradiation tank may be of a closed design, and the holding chamber between the inside of the irradiation tank and the sample tank may be filled with an inert gas.
In one embodiment, each of the irradiation rods and the monitoring rod has a laser marking mark with different numbers, and different circumferential surfaces of the operating head have the laser marking marks with numbers corresponding to those of the irradiation rods and the monitoring rod in a one-to-one axial direction.
In one embodiment, the outer surface of the pin is provided with a sealing groove, and the assembly body further comprises a coil spring, wherein the coil spring is in clamping fit with the sealing groove so as to reduce the bypass flow of the coolant when the pin is inserted into the fast reactor core.
In one embodiment, the monitoring rod further comprises a winding wire wound on the outer surface of the monitoring rod, and the winding wire is in contact with the outer surface of the irradiation rod to radially fix the irradiation rod and the monitoring rod.
In one embodiment, the monitoring rod is also internally provided with a temperature measuring device, and the monitoring device and the temperature measuring device are non-online monitoring devices; or the monitoring device and the temperature measuring device are online monitoring devices.
In one embodiment, the number of the irradiation rods is multiple, and the multiple irradiation rods are arranged around the circumference of the monitoring rod.
In one embodiment, said irradiation canister comprises at least one said sample canister, said sample canister being removably placed in said receiving cavity.
In one embodiment, the fast reactor material irradiation examination assembly is suitable for any one of a sodium-cooled experimental fast reactor reflecting layer region, a sodium-cooled demonstration fast reactor reflecting layer region and a sodium-cooled commercial fast reactor reflecting layer region.
The embodiment of the application provides a subassembly is examined in fast reactor material irradiation, and this subassembly is examined in fast reactor material irradiation includes subassembly main part, monitoring rod and irradiation stick, and the monitoring rod is including placing the monitoring devices in the monitoring rod, and the irradiation rod is in including having the irradiation jar that holds the chamber and placing the sample jar that holds the intracavity, that is to say, the chamber that holds of irradiation jar is used for placing the sample jar, places the material sample in the sample jar, and the monitoring rod is used for placing monitoring devices. In addition, the assembly main body is provided with an accommodating space, a coolant inlet hole and a coolant outlet hole which are communicated with the accommodating space, the monitoring rod is detachably arranged in the accommodating space, and the irradiation rod is detachably arranged in the accommodating space and located on the peripheral side of the monitoring rod. From this, to the different material samples that need carry out the irradiation in the fast reactor and examine, only need to change the material sample of putting into in the irradiation stick, can accomplish the monitoring to each item performance of material sample through the monitoring devices in the monitoring stick, this fast reactor material irradiation examines subassembly ability used repeatedly to the suitability of device has been improved.
Drawings
FIG. 1 is a schematic structural diagram of a fast reactor material irradiation testing assembly according to an embodiment of the present disclosure;
FIG. 2 is a sectional view taken along line a-a of FIG. 1;
FIG. 3 is a schematic view of the structure of the monitoring wand shown in FIG. 1;
FIG. 4 is a schematic structural view of the irradiation bar shown in FIG. 1;
fig. 5 is a schematic diagram of an irradiation tank with a sample tank.
Description of the reference numerals
The fast reactor material irradiation testing assembly 10; a module main body 11; the accommodating space 11 a; the coolant inlet hole 11 b; a coolant outlet hole 11 c; an operating head 110; an upper transition joint 111; an outer sleeve 112; a lower transition joint 113; a pin 114; a pin header 115; an upper shielding bar 116; an upper positioning grid 117; a lower shielding bar 118; a lower positioning grid 119; a monitoring rod 12; the first cooling holes 12 a; a third connecting member 121; a fourth connecting member 122; monitoring the tank 123; a wire wrap 124; an irradiation bar 13; the second cooling holes 13 a; a first connecting member 131; a second connecting member 132; an irradiation tank 133; sample tank 1331.
Detailed Description
It should be noted that, in the present application, technical features in examples and embodiments may be combined with each other without conflict, and the detailed description in the specific embodiment should be understood as an explanation of the gist of the present application and should not be construed as an improper limitation to the present application.
In the present application, the "axial," "upper," "lower" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 1. It is to be understood that such directional terms are merely for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application.
An embodiment of the present application provides a fast reactor material irradiation testing assembly 10, please refer to fig. 1 to 4, the fast reactor material irradiation testing assembly 10 includes an assembly main body 11, a monitoring rod 12 and an irradiation rod 13, the monitoring rod 12 includes a monitoring device disposed in the monitoring rod 12, the irradiation rod 13 includes an irradiation tank 133 having a containing cavity and a sample tank 1331 disposed in the containing cavity, that is, the containing cavity of the irradiation tank 133 is used for placing the sample tank 1331, the inside of the sample tank 1331 is used for placing a material sample, and the monitoring rod 12 is used for placing the monitoring device. In addition, the assembly body 11 is provided with a containing space 11a, and a coolant inlet hole 11b and a coolant outlet hole 11c which are communicated with the containing space 11a, wherein coolant can enter from the coolant inlet hole 11b and flow out from a coolant outlet after flowing through the containing space 11a so as to take away heat caused by neutron irradiation in the fast reactor material irradiation testing assembly 10, the monitoring rod 12 is detachably arranged in the containing space 11a, and the irradiation rod 13 is detachably arranged in the containing space 11a and is positioned on the peripheral side of the monitoring rod 12. Therefore, for different material samples which need to be tested by irradiation in a fast reactor, only the material sample put into the sample tank 1331 needs to be replaced, the monitoring of various performances of the material sample can be completed by the monitoring device in the monitoring rod 12, and the fast reactor material irradiation testing component 10 can be repeatedly used, so that the applicability of the device is improved.
In addition, for material samples with great difference in structural form and/or experimental requirements, the reactor-entering irradiation work can be realized only by adjusting the type of the irradiation rod 13 in the fast reactor material irradiation testing assembly and/or replacing the corresponding monitoring rod 12, and the repeated design work of the whole assembly and the physical and thermal analysis of the reactor core is not needed.
It should be noted that the monitoring device is placed in the monitoring rod 12, which means that the monitoring device can be taken out of the monitoring rod 12, and when the monitoring device is placed in the monitoring rod 12, the monitoring device may be detachably connected with the monitoring rod 12 or not connected with the monitoring rod 12.
In one embodiment, the fast reactor material irradiation testing assembly 10 can be used for in-reactor material irradiation testing, out-of-reactor hydraulic performance testing and off-line monitoring irradiation testing performed in a sodium-cooled experimental fast reactor reflecting layer region, a sodium-cooled demonstration fast reactor reflecting layer region or a sodium-cooled commercial fast reactor reflecting layer region.
In one embodiment, the number of the irradiation rods 13 is plural, and the plural irradiation rods 13 are arranged around the circumference of the monitoring rod 12.
In one embodiment, the number of the irradiation rods 13 and the number of the monitoring rods 12 may be one or more according to the material sample and the research requirement.
In one embodiment, referring to fig. 2, the number of irradiation rods 13 is 6, and the number of monitoring rods 12 is 1.
In an embodiment, the monitoring rod 12 is further provided with a temperature measuring device, which can realize the temperature function, and the monitoring device and the temperature measuring device can be an online monitoring device, and the monitoring device and the temperature measuring device can also be a non-online monitoring device. For the non-online monitoring device, after irradiation examination is finished, the monitoring rod 12 can be disassembled in a hot chamber, the non-online monitoring device is taken out, the neutron fluence rate and the temperature interval range are reversely pushed out according to the state and the change of the non-online monitoring device, the data analysis work after the examination test is convenient, and the non-online monitoring of the neutron fluence rate and the temperature of the reactor core where the material sample is located can be realized. Different non-online monitoring devices can be placed in the monitoring rod 12 to monitor various parameters of the material sample during irradiation examination, and a theoretical analysis basis is provided for post-irradiation inspection work.
In one embodiment, referring to fig. 1, the assembly body 11 includes an operating head 110, an upper transition joint 111, an outer sleeve 112, a lower transition joint 113, a pin 114 and a pin joint 115, which are connected in sequence, and a receiving space 11a is formed in the outer sleeve 112, which can provide a basic device design form for material irradiation testing work performed in a fast reactor, and can match thermal hydraulic conditions of corresponding positions of a core according to the position of a reflecting layer where the device is located, and is compatible with existing reactor core designs.
In one embodiment, the fast reactor material irradiation testing assembly 10 is positioned in the reflecting layer region at the position of the reactor core, the position of the assembly in the region is slightly influenced by reactor shutdown and refueling, and long-period irradiation testing can be realized without performing assembly region replacement operation. According to the test requirement, the fast reactor material irradiation testing assembly 10 can be moved to the area of the reflecting layer assembly matched with the hydraulic condition, so that the control requirement on the neutron fluence rate of the material irradiation testing is met.
In one embodiment, the operating head 110 and the upper transition joint 111 may be connected by threads, and both may be pierced and inserted with a dowel pin and fixedly connected by spot welding.
In one embodiment, the outer sleeve 112 may be a hexagonal tube, the lower transition joint 113 may be a spherical transition joint, and the outer sleeve 112 is fixed by ring welding after being butted with the upper transition joint 111 and the lower transition joint 113.
In one embodiment, lower transition joint 113 is threadably connected to pin 114, and the two are secured by girth welding after being butted.
In one embodiment, pin connector 115 is threaded onto pin 114 and is intermittently fillet welded thereto.
In one embodiment, the fast reactor material irradiation testing assembly 10 has the same appearance and similar weight as the required and replaced reflecting layer assembly, is arranged in the reflecting layer area of the core, does not influence the neutron flux distribution of the core while matching with the core thermal hydraulic performance, is beneficial to eliminating the influence on the core caused by replacing the reflecting layer assembly, and does not need to perform the core safety analysis work when the testing assembly is put into the core.
In one embodiment, referring to fig. 1, the coolant inlet hole 11b is disposed on the pin 114, and the coolant outlet hole 11c is disposed on the operating head 110. That is, the coolant flows from the lower portion of the apparatus to the upper portion of the apparatus, and the temperature of each structure of the apparatus can be reduced.
In the case of the sodium-cooled fast reactor, liquid metal sodium is used as a coolant.
In one embodiment, referring to fig. 1, the assembly body 11 further includes an upper shielding bar 116, an upper positioning grid 117, a lower shielding bar 118 and a lower positioning grid 119 inside the outer sleeve 112, wherein the upper positioning grid 117 and the lower positioning grid 119 are spaced apart from each other along the axial direction of the outer sleeve 112 to form a receiving space 11a, that is, the irradiation bar 13 and the monitoring bar 12 are disposed between the upper positioning grid 117 and the lower positioning grid 119. One end of the upper shielding rod 116 is connected with the upper transition joint 111, the other end of the upper shielding rod 116 is connected with the upper positioning grid plate 117, one end of the lower shielding rod 118 is connected with the lower transition joint 113, the other end of the lower shielding rod 118 is arranged at intervals with the lower positioning grid plate 119, and the upper shielding rod 116, the monitoring rod 12, the irradiation rod 13 and the lower shielding rod 118 can play a role in slowing down neutrons and reducing neutron leakage rate in an experimental fast reactor.
In one embodiment, upper transition joint 111 is threaded onto upper shield bar 116 and secured by spot welding.
In one embodiment, upper shield rods 116 are attached to upper positioning grid 117 by girth welding.
In one embodiment, lower shield rod 118 and lower transition joint 113 are inserted into a locating pin at the opening and secured by spot welding.
In one embodiment, referring to fig. 4, the irradiation bar 13 includes a first connecting member 131, a second connecting member 132 and an irradiation tank 133, the first connecting member 131 is connected to the upper end of the irradiation tank 133, the second connecting member 132 is connected to the lower end of the irradiation tank 133, the first connecting member 131 is connected to the upper positioning grid 117, and the second connecting member 132 is connected to the lower positioning grid 119, that is, the irradiation tank 133 is located at the middle section of the irradiation bar 13, and the maximum outer diameter of the outer section of the irradiation bar is the same as that of the irradiation bar 13.
In one embodiment, after the material irradiation test is finished, the irradiation rod 13, the irradiation tank 133, and the sample tank 1331 may be disassembled in a hot chamber, and the material sample may be taken out to perform the detection after irradiation.
In one embodiment, irradiation tank 133 further includes at least one sample tank 1331, sample tank 1331 is removably disposed in the receiving cavity, the material sample is disposed in sample tank 1331, the tank is configured to be open-cell to direct a coolant within the assembly to cool sample tank 1331, or closed-cell to control the irradiation temperature of sample tank 1331 by filling an inert gas in the gap between sample tank 1331 and the material sample, as desired for temperature and neutron fluence rate control of sample tank 1331. In the fast reactor material irradiation testing assembly 10, different material samples can be placed in different sample tanks 1331, the sample tanks 1331 can simultaneously test a plurality of materials according to the material irradiation testing, and the sample irradiation temperature can be controlled through the gap between the sample tanks 1331 and the samples, namely, the material irradiation testing requirements of a plurality of samples and a plurality of temperature gradients are met.
In one embodiment, the first connecting member 131, the irradiation bar 13 and the second connecting member 132 are fixed by ring welding.
In one embodiment, multiple material samples may be placed in sample tank 1331, depending on the irradiation challenge requirements.
In one embodiment, the upper positioning grid 117 and the lower positioning grid 119 have grid holes, and the two ends of the irradiation bar 13 are inserted into the grid holes respectively, connected by nuts, and fixed by adding washers.
In one embodiment, referring to fig. 3, the monitoring rod 12 includes a third connecting member 121, a fourth connecting member 122 and a monitoring tank 123 having a receiving groove, that is, the monitoring device is disposed in the receiving groove of the monitoring tank 123, the third connecting member 121 is connected to the upper end of the monitoring tank 123, the fourth connecting member 122 is connected to the lower end of the monitoring tank 123, the third connecting member 121 is connected to the upper positioning grid plate 117, the fourth connecting member 122 is connected to the lower positioning grid plate 119, that is, the monitoring tank 123 is located at the middle section of the monitoring rod 12, and the maximum external diameter of the monitoring tank 123 is the same as that of the monitoring rod 12. Can be according to the position of the sample in position and the sample jar 1331 that needs monitoring with monitoring jar 123 design in the different positions of monitoring stick 12 middle section, be convenient for monitor the neutron fluence rate and the temperature that the sample received.
In one embodiment, the third connecting member 121, the monitoring tank 123 and the fourth connecting member 122 are fixed by girth welding.
In one embodiment, the upper positioning grid 117 and the lower positioning grid 119 have grid holes, and the two ends of the monitoring rod 12 are inserted into the grid holes respectively, connected by nuts, and fixed by adding washers.
In one embodiment, the monitoring rod 12 has a first cooling hole 12a, and the first cooling hole 12a is communicated with the receiving groove. That is, the monitoring rod 12 may be provided with the first cooling hole 12a so that the coolant in the accommodating space 11a flows into the accommodating groove, enabling the coolant to cool the monitoring device, and also enabling the monitoring device to directly measure the temperature of the coolant.
In one embodiment, the irradiation rod 13 has a second cooling hole 13a, and the second cooling hole 13a is communicated with the accommodating cavity. That is, the irradiation rod 13 may be provided with a second cooling hole 13a, so that the coolant in the accommodating space 11a flows into the accommodating cavity to directly cool the sample tank 1331.
In one embodiment, irradiation tank 133 may be of a closed design, and the holding cavity between the interior of irradiation tank 133 and sample tank 1331 may be filled with an inert gas. It should be noted that, after the sample tank 1331 is placed in the containing cavity in the irradiation tank 133, the containing cavity still has a gap, and an inert gas can be filled into the gap to form a stable irradiation environment. At this time, the irradiation tank 133 does not have the second cooling hole 13 a.
In a specific embodiment, the size of the gap formed after the sample tank 1331 is placed in the containing cavity of the irradiation tank 133 may be adjusted according to actual needs to control the neutron fluence rate and the irradiation temperature received by the irradiated sample.
In one embodiment, the irradiation rod 13 and the monitoring rod 12 have laser mark marks with different numbers respectively, and different circumferential surfaces of the operating head 110 have laser mark marks with numbers corresponding to those of the irradiation rods 13 and the monitoring rod 12 in the axial direction one by one. That is to say, each irradiation rod 13 and the monitoring rod 12 are provided with a laser marking with different numbers, the surface of the operating head 110 corresponding to the upper part of each irradiation rod 13 and the upper part of the monitoring rod 12 is provided with a laser marking with the same number as the number of the laser marking, so that when the fast reactor material irradiation testing assembly 10 is placed in the reactor core sodium pool, the operating head 110 is grabbed by the refueling machine to rotate the fast reactor material irradiation testing assembly 10, and the position corresponding to the numbered irradiation rod is indicated by the laser marking symbol positioned on the operating head 110, so that the purpose of controlling the neutron fluence rate of the irradiated material is achieved, and the problem that the whole device needs to be replaced due to the neutron fluence rate requirements of different material samples is avoided.
In one embodiment, the outer surface of the pin 114 has a sealing groove, and the assembly body 11 further includes a coil spring that is snap-fit into the sealing groove to reduce coolant bypass when the pin 114 is inserted into the fast reactor core.
In one embodiment, referring to fig. 3, the monitoring rod 12 further includes a winding wire 124 wound around the outer surface of the monitoring rod 12, and the winding wire 124 contacts with the outer surface of the irradiation rod 13, so as to achieve radial positioning and fixing between the monitoring rod 12 and the irradiation rod 13.
In one embodiment, the ends of the wire wrap 124 are spot welded to the monitor rod 12.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (16)
1. A fast reactor material irradiation testing assembly is characterized by comprising:
an assembly body having an accommodation space and a coolant inlet hole and a coolant outlet hole communicating with the accommodation space;
the monitoring rod comprises a monitoring device placed in the monitoring rod, and the monitoring rod is detachably arranged in the accommodating space;
the irradiation stick, the irradiation stick is in including having the irradiation jar that holds the chamber and placing hold the sample jar of intracavity, irradiation stick detachably sets up just be located in the accommodation space the week side of monitoring stick.
2. The fast reactor material irradiation testing assembly of claim 1, wherein the assembly body comprises an operating head, an upper transition joint, an outer sleeve, a lower transition joint, a pin and a pin joint which are connected in sequence, and the accommodating space is formed in the outer sleeve.
3. The fast reactor material irradiation testing assembly of claim 2, wherein the coolant inlet hole is provided on the pin, and the coolant outlet hole is provided on the operation head.
4. The fast reactor material irradiation testing assembly of claim 2, wherein the assembly body further comprises an upper shielding bar, an upper positioning grid plate, a lower shielding bar and a lower positioning grid plate which are arranged in the outer sleeve, the upper positioning grid plate and the lower positioning grid plate are arranged at intervals along the axial direction of the outer sleeve so that the space is formed at the interval, one end of the upper shielding bar is connected with the upper transition joint, the other end of the upper shielding bar is connected with the upper positioning grid plate, one end of the lower shielding bar is connected with the lower transition joint, and the other end of the lower shielding bar is arranged at intervals with the lower positioning grid plate.
5. The fast reactor material irradiation testing assembly of claim 4, wherein the irradiation bar comprises a first connecting piece, a second connecting piece and the irradiation tank, the first connecting piece is connected with the upper end of the irradiation tank, the second connecting piece is connected with the lower end of the irradiation tank, the first connecting piece is connected with the upper positioning grid plate, and the second connecting piece is connected with the lower positioning grid plate.
6. The fast reactor material irradiation testing assembly of claim 4, wherein the monitoring rod comprises a third connecting piece, a fourth connecting piece and a monitoring tank with a containing groove, the third connecting piece is connected with the upper end of the monitoring tank, the fourth connecting piece is connected with the lower end of the monitoring tank, the third connecting piece is connected with the upper positioning grid plate, and the fourth connecting piece is connected with the lower positioning grid plate.
7. The fast reactor material irradiation challenge assembly of claim 6, wherein the monitor rod has a first cooling hole, the first cooling hole communicating with the receiving groove.
8. The fast reactor material irradiation challenge assembly of claim 1, wherein the irradiation rod has a second cooling hole, the second cooling hole being in communication with the receiving cavity.
9. The fast reactor material irradiation testing assembly of claim 1, wherein the irradiation tank is of a closed design, and the accommodating cavity between the inside of the irradiation tank and the sample tank can be filled with inert gas.
10. The fast reactor material irradiation testing assembly of claim 2, wherein each of the irradiation rods and the monitoring rod has a laser marking identification with different numbers, and different circumferential surfaces of the operating head have the laser marking identifications with numbers corresponding to the numbers of the irradiation rods and the monitoring rod in a one-to-one manner.
11. The fast reactor material irradiation testing assembly of claim 2, wherein the outer surface of the pin is provided with a sealing groove, the assembly body further comprises a coil spring, and the coil spring is in clamping fit with the sealing groove so as to reduce the bypass flow of the coolant when the pin is inserted into the fast reactor core.
12. The fast reactor material irradiation testing assembly of claim 1, wherein the monitoring rod further comprises a wire wrap wound around an outer surface of the monitoring rod, the wire wrap being in contact with the outer surface of the irradiation rod to radially secure the irradiation rod to the monitoring rod.
13. The fast reactor material irradiation testing assembly of claim 1, wherein a temperature measuring device is further arranged in the monitoring rod, and the monitoring device and the temperature measuring device are non-online monitoring devices; or the monitoring device and the temperature measuring device are online monitoring devices.
14. The fast reactor material irradiation testing assembly of claim 1, wherein the number of the irradiation rods is plural, and the plural irradiation rods are arranged around the circumference of the monitoring rod.
15. The fast reactor material irradiation testing assembly of claim 1, wherein the irradiation tank comprises at least one of the sample tanks, and the sample tank is detachably placed in the receiving cavity.
16. The fast reactor material irradiation challenge assembly of any one of claims 1 to 15, wherein the fast reactor material irradiation challenge assembly is adapted to be used in any one of a sodium-cooled experimental fast reactor reflective layer region, a sodium-cooled demonstration fast reactor reflective layer region, and a sodium-cooled commercial fast reactor reflective layer region.
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| CN202122066108.9U CN216014825U (en) | 2021-08-30 | 2021-08-30 | Fast reactor material irradiation examination assembly |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122066108.9U CN216014825U (en) | 2021-08-30 | 2021-08-30 | Fast reactor material irradiation examination assembly |
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