Irradiation sample loading device

Abstract

The embodiment of the invention relates to the field of nuclear reactor testing, in particular to an irradiation sample loading device, which is used for placing a plurality of irradiation samples on an irradiation test device for an irradiation test, and comprises a plurality of sample containers, a positioning support part and a mounting part, an accommodating cavity is formed in the sample container, a plurality of irradiation samples are arranged in the accommodating cavity, and a coolant can flow into the accommodating cavity to cool the irradiation samples; the positioning support part is arranged to support the plurality of sample containers and position the positions of the plurality of sample containers; the mounting part is arranged to be connected with the positioning and supporting part and is used for mounting the plurality of sample containers to the irradiation test device; wherein the sample containers are arranged to be capable of adjusting the temperature and the coolant flow in the accommodating cavities, so that irradiation samples arranged in the accommodating cavities of different sample containers can be subjected to irradiation tests at different temperatures and different coolant flows. According to the irradiation sample loading device provided by the embodiment of the invention, the test operation can be simplified, and the test efficiency can be improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of nuclear reactor testing, and in particular to an irradiation sample loading device. Background Art

[0002] The statements herein merely provide background information related to the present application and do not necessarily constitute prior art.

[0003] During service, the materials in the reactor will be irradiated by the reactor core, which will cause changes in their performance, thus affecting the safe and stable operation of the reactor. Therefore, it is necessary to study the performance changes of the materials after irradiation.

[0004] In order to study the performance changes of materials after irradiation, irradiated samples made of materials are usually placed in irradiation test devices, and then the irradiation test devices are placed in reactors for irradiation tests to study the performance changes of materials after irradiation. However, since a single irradiation test can only be carried out at a single coolant temperature and a single coolant flow rate, there is a problem of low efficiency of irradiation tests. Summary of the invention

[0005] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.

[0006] In view of the above problems, an embodiment of the present application provides an irradiation sample loading device for placing multiple irradiation samples in an irradiation test device for irradiation testing, which may include multiple sample containers, a positioning support portion, and a mounting portion. The sample container is formed with a accommodating cavity, and multiple irradiation samples are arranged in the accommodating cavity, and the accommodating cavity is arranged to allow a coolant to flow in to cool the irradiation samples; the positioning support portion is arranged to support multiple sample containers and locate the positions of multiple sample containers; the mounting portion is arranged to be connected to the positioning support portion, so as to install multiple sample containers to the irradiation test device; wherein the sample container is arranged to be able to adjust the temperature and coolant flow rate in the accommodating cavity, so that the irradiation samples arranged in the accommodating cavities of different sample containers can be irradiated at different temperatures and coolant flow rates.

[0007] The irradiation sample loading device provided in the embodiment of the present application can adjust the temperature and coolant flow rate in the accommodating chamber, so that the irradiation sample can be irradiated at different temperatures and coolant flow rates at the same time, thereby simplifying the test operation and improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Other objects and advantages of the present application will become apparent from the following description of the embodiments of the present application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the present application.

[0009] Figure 1 It is a schematic diagram of the structure of the irradiation sample loading device provided in the embodiment of the present application.

[0010] Figure 2 It is a cross-sectional view of a sample container of the irradiation sample loading device provided in an embodiment of the present application.

[0011] Figure 3 It is a schematic structural diagram of the axial positioning support member of the irradiation sample loading device provided in an embodiment of the present application.

[0012] Figure 4 It is a schematic structural diagram of a radial positioning support member of an irradiation sample loading device provided in an embodiment of the present application.

[0013] Description of reference numerals:

[0014] 100. Irradiation sample loading device;

[0015] 10. Sample container; 11. Inner shell; 12. Outer shell; 120. Cooling channel; 13. Gas charging pipeline; 14. Inlet connecting pipe; 15. Coolant pipeline;

[0016] 101, accommodating chamber; 102, temperature regulating chamber; 103, air inlet; 104, coolant inlet; 105, coolant outlet; 106, sample mounting portion; 107, inlet through hole;

[0017] 20. Positioning support portion; 21. Axial positioning support member; 211. Mounting fitting portion; 212. Cooling through hole; 213. Mounting hole; 22. Radial positioning support member; 221. Radial positioning support portion; 222. Support connection portion; 223. Fixed connection portion; 23. Fixing member;

[0018] 30. Mounting part; 31. First column; 32. Second column; 40. Instrument pipe fitting.

[0019] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding. DETAILED DESCRIPTION

[0020] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.

[0021] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.

[0022] In order to improve the efficiency of irradiation test, it is usually adopted to place multiple irradiation samples into the irradiation sample loading device, and then place the irradiation sample loading device into the irradiation test device for irradiation test. In the related art, the irradiation sample loading device uses one irradiation sample container to load all irradiation samples, and all irradiation samples are irradiated at the same temperature and the same coolant flow rate. If the performance of the irradiation samples at different temperatures and different coolant flows is to be studied, multiple tests are required, which is complicated and time-consuming, and the test efficiency is low.

[0023] In view of at least one aspect of the above technical problem, an embodiment of the present application provides an irradiation sample loading device.

[0024] like Figure 1 As shown, Figure 1 A schematic structural diagram of an irradiation sample loading device 100 provided in an embodiment of the present application is shown, which is used to place a plurality of irradiation samples in an irradiation test device for irradiation testing.

[0025] The irradiation sample loading device 100 provided in the embodiment of the present application may include a plurality of sample containers 10, a positioning support portion 20 and a mounting portion 30. The sample container 10 is formed with a receiving cavity 101, and a plurality of irradiation samples are arranged in the receiving cavity 101, and the receiving cavity 101 is arranged to allow a coolant to flow in to cool the irradiation samples; the positioning support portion 20 is arranged to support the plurality of sample containers 10 and to position the plurality of sample containers 10; the mounting portion 30 is arranged to be connected to the positioning support portion 20, so as to install the plurality of sample containers 10 to the irradiation test device; wherein the sample container 10 is arranged to be able to adjust the temperature and coolant flow rate in the receiving cavity 101, so that the irradiation samples arranged in the receiving cavities 101 of different sample containers 10 can be subjected to irradiation tests at different temperatures and coolant flow rates.

[0026] The irradiation sample loading device 100 provided in the embodiment of the present application can adjust the temperature and coolant flow rate in the accommodating chamber 101, so that the irradiation sample can be irradiated at different temperatures and coolant flow rates at the same time, thereby simplifying the test operation and improving the test efficiency.

[0027] In some embodiments, the coolant may be liquid metal.

[0028] In some embodiments, during the irradiation experiment, one or more sample containers 10 may be individually removed for inspection.

[0029] like Figure 2 As shown, Figure 2 A cross-sectional view of a sample container 10 of an irradiation sample loading device 100 provided in an embodiment of the present application is shown. In some embodiments, each sample container 10 may include an inner shell 11 and an outer shell 12. The inner shell 11 is configured to form a receiving cavity 101; the outer shell 12 is disposed on the outer side of the inner shell 11, and a temperature regulating cavity 102 is formed between the inner shell 11 and the outer shell 12 for regulating the temperature in the receiving cavity 101; wherein, an irradiated sample may be disposed in the receiving cavity 101 of each sample container 10. In such an embodiment, the temperature in the receiving cavity 101 may be regulated by the temperature regulating cavity 102 of each sample container 10, so that the receiving cavities 101 of different sample containers 10 are at different temperatures, thereby enabling the irradiated samples in the receiving cavities 101 of different sample containers 10 to be tested at different temperatures, which is conducive to studying the performance of the irradiated samples at different temperatures.

[0030] See also Figure 2 In some embodiments, each sample container 10 further includes a gas filling pipeline 13, which is arranged to be in fluid communication with the temperature regulating chamber 102, and is used to fill the temperature regulating chamber 102 with a mixed gas, and adjust the temperature in the receiving chamber 101 by adjusting the filled mixed gas. In such an embodiment, the thermal conductivity of the temperature regulating chamber 102 can be changed by adjusting the filled mixed gas, so as to change the amount of heat transfer in the receiving chamber 101, thereby adjusting the temperature in the receiving chamber 101.

[0031] In some embodiments, the mixed gas filled into the temperature regulating chamber 102 may be a mixed gas of He and Ar. In some embodiments, the thermal conductivity of the temperature regulating chamber 102 may be changed by adjusting the volume fraction of the two gases in the mixed gas of He and Ar and the gas pressure of the mixed gas.

[0032] See also Figure 2 In some embodiments, the housing 12 is formed with an air inlet 103 , and the inflation pipeline 13 is fixedly connected to the periphery of the air inlet 103 .

[0033] See also Figure 2 In some embodiments, each sample container 10 is formed with a coolant inlet 104 and a coolant outlet 105, and the coolant inlet 104 and the coolant outlet 105 of each sample container 10 are both configured to have an adjustable opening to adjust the coolant flow rate in each sample container 10. In such an embodiment, by adjusting the coolant flow rate in each sample container 10, the irradiation samples in different sample containers 10 can be subjected to irradiation tests at different coolant flow rates, which is conducive to studying the performance of the irradiated samples at different coolant flow rates.

[0034] See also Figure 2 In some embodiments, the side wall of the inner shell 11 and the side wall of the outer shell 12 respectively form the same inlet through hole 107 at the same axial height. In some embodiments, each sample container 10 may further include an inlet connecting pipe 14, which is disposed in the temperature regulating chamber 102, one end of the inlet connecting pipe 14 is fixedly connected to the periphery of the inlet through hole 107 of the inner shell 11, and the other end is fixedly connected to the periphery of the inlet through hole 107 of the outer shell 12; the inlet connecting pipe 14, the inlet through hole 107 of the inner shell 11 and the inlet through hole 107 of the outer shell 12 together form a coolant inlet 104.

[0035] See also Figure 2 In some embodiments, a coolant outlet 105 and a cooling channel 120 are formed on the top of the housing 12. In some embodiments, each sample container 10 further includes a coolant pipeline 15, which is disposed in the cooling channel 120 of the housing 12, one end of the coolant pipeline 15 is connected to the accommodating cavity 101, and the other end is connected to the coolant outlet 105, so that the coolant in the accommodating cavity 101 can flow out of the sample container 10. In some embodiments, the coolant pipeline 15 is fixedly connected to the periphery of the coolant outlet 105.

[0036] Figure 3 FIG. 1 is a schematic structural diagram of an axial positioning support member 21 of an irradiation sample loading device 100 provided in an embodiment of the present application. Figure 4 FIG. 2 is a schematic structural diagram of a radial positioning support member 22 of an irradiation sample loading device 100 provided in an embodiment of the present application. Figure 1 , Figure 3 and Figure 4As shown, in some embodiments, the positioning support portion 20 may include a plurality of axial positioning supports 21, a plurality of radial positioning supports 22 and a fixing member 23. The plurality of axial positioning supports 21 are used to provide axial positioning and axial support for a plurality of sample containers 10, and each sample container 10 is arranged between two axial positioning supports 21; the plurality of radial positioning supports 22 are used to provide radial positioning and radial support for a plurality of sample containers 10, and each radial positioning support 22 is arranged between two axial positioning supports 21 and arranged at the axial middle height of each sample container 10; the fixing member 23 is used to fix the plurality of axial positioning supports 21 and the plurality of radial positioning supports 22, and the plurality of axial positioning supports 21 and the plurality of radial positioning supports 22 are fixedly connected to the fixing member 23, and the plurality of sample containers 10 are respectively located at different axial heights of the fixing member 23, so as to be positioned and supported by the axial positioning supports 21 and the radial positioning supports 22 arranged at the corresponding axial heights. In such an embodiment, the multiple sample containers 10 are positioned by the axial positioning support 21 and the radial positioning support 22, so as to facilitate the installation of the multiple sample containers 10; at the same time, by supporting the multiple sample containers 10, displacement of the sample containers 10 can be avoided.

[0037] See also Figure 3 In some embodiments, the axial positioning support 21 is formed with a mounting hole 213, and the axial positioning support 21 is sleeved on the fixing member 23 through the mounting hole 213. In some embodiments, the axial positioning support 21 and the radial positioning support 22 are fixedly connected to the fixing member 23 by welding.

[0038] The fixing member 23 is, for example, a long support tube with a regular hexagonal cross section. The radial positioning support member 22 is, for example, a spring support ring made of 316H stainless steel.

[0039] See also Figure 1 In some embodiments, multiple sample containers 10 are evenly distributed at different axial heights of the fixing member 23, and multiple sample containers 10 are respectively fixed at each axial height of the fixing member 23, and multiple sample containers 10 at the same axial height share the same axial support member and radial support member. For example, the number of sample containers 10 can be 48, and the 48 sample containers 10 are evenly distributed at 8 axial heights of the fixing member 23, and 6 sample containers 10 are evenly distributed at each axial height. The upper end and the lower end of each sample container 10 are respectively positioned and supported by two axial positioning supports 21, and each sample container 10 is positioned and supported by a radial positioning support 22 located at its middle axial height.

[0040] In some embodiments, the axial heights of the multiple sample containers 10 may cover the heights of the core bottom, the core active section, and the core top, so as to study the performance of the irradiated samples at different positions in the reactor.

[0041] In some embodiments, in order to facilitate the influence on the irradiation performance of the irradiated sample, the irradiation test device is provided with measuring instruments required for the irradiation test, and accordingly, the irradiation test device is also provided with measuring instrument lines connected to the measuring instruments required for the irradiation test. In some embodiments, the measuring instrument lines connected to the measuring instruments required for the irradiation test can be provided in the fixing member 23 and extend into the irradiation test device. In such an embodiment, the measuring instrument lines can be separated from the liquid metal as a coolant by the fixing member 23 to avoid contact between the measuring instrument lines and the coolant, thereby improving the reliability and service life of the measuring instrument lines, and also facilitating the maintenance of the measuring instrument lines.

[0042] In some embodiments, the gas charging pipeline 13 is connected to the external gas supply pipeline correspondingly, so that the mixed gas can enter the temperature regulating chamber 102 of each sample container 10 respectively, and realize the independent gas intake of the temperature regulating chamber 102 of each sample container 10. Accordingly, the number of external gas supply pipelines is equal to that of sample containers 10, so as to realize independent gas intake. In some embodiments, the external gas supply pipeline can also be arranged in the fixing member 23, and the fixing member 23 is formed with an air inlet hole, and the gas charging pipeline 13 can enter the fixing member 23 through the air inlet hole and be connected to the gas supply pipeline.

[0043] See also Figure 2 and Figure 3 In some embodiments, the side wall of each sample container 10 forms two sample mounting portions 106, and the periphery of each axial positioning support 21 forms a mounting fitting portion 211, which matches the sample mounting portion 106 in a contour; the two sample mounting portions 106 of each sample container 10 can be connected with the mounting fitting portions 211 of the two axial positioning supports 21, so that each sample container 10 is disposed between the two axial positioning supports 21. In such an embodiment, by disposing each sample container 10 between the two axial positioning supports 21, the axial positioning of each sample container 10 can be achieved, and axial support can be provided for each sample container 10, so as to prevent each sample container 10 from falling off due to the force of flow-induced vibration; and it is also beneficial to the thermal expansion of each sample container 10 in the axial and radial directions.

[0044] See also Figure 2 In some embodiments, two sample mounting portions 106 are formed on the inner shell 11 and the outer shell 12 respectively.

[0045] See also Figure 2 and Figure 3In some embodiments, the sample mounting portion 106 is a groove, and the mounting matching portion 211 is a notch, and the radius of the notch is greater than the radius of the groove, and the radius of the notch is smaller than the outer diameter of the sample container 10. In such an embodiment, the radius of the notch is greater than the radius of the groove, which facilitates the sample mounting portion 106 to enter the mounting matching portion 211 to achieve the matching between the sample mounting portion 106 and the mounting matching portion 211; at the same time, the radius of the notch is smaller than the outer diameter of the sample container 10, so that the sample mounting portion 106 is not easily separated from the mounting matching portion 211.

[0046] In some embodiments, the irradiation test device may include a test outer shell and a test inner shell disposed inside the test outer shell, and the sample loading device is used to place a plurality of irradiation samples in the test inner shell of the irradiation test device, wherein a coolant is contained in the test inner shell.

[0047] In some embodiments, the irradiation test device further includes a driving unit disposed in the test outer shell and configured to drive the coolant in the test inner shell to flow. Figure 3 , each axial positioning support 21 is formed with a plurality of cooling through holes 212, and the driving unit can drive the coolant in the test inner shell to flow through the plurality of cooling through holes 212, so as to stir and homogenize the coolant flow field in the test inner shell; the coolant flowing through the plurality of cooling through holes 212 flows into each sample container 10. In such an embodiment, the coolant flow field in the test inner shell is stirred and homogenized through the cooling through holes 212, so that it can be ensured that the coolant flowing into the accommodating cavities 101 of different sample containers 10 has only different flow rates, and other properties (such as temperature) are the same, which is conducive to accurately studying the performance of the irradiated sample under different coolant flow rates.

[0048] See also Figure 4 In some embodiments, each radial positioning support member 22 may include a plurality of radial positioning support portions 221, a plurality of support connection portions 222, and a plurality of fixed connection portions 223. Each radial positioning support portion 221 is disposed at the middle axial height of each sample container 10, and is used to provide radial positioning and radial support for the sample container 10; a plurality of support connection portions 222 are disposed between two adjacent radial positioning support portions 221, and are used to connect two adjacent radial positioning support portions 221; each fixed connection portion 223 is formed on each radial positioning support portion 221, and the plurality of fixed connection portions 223 are fixedly connected to the fixing member 23. In such an embodiment, radial support can be provided to a plurality of sample containers 10 disposed at the same axial height through the cooperation of a plurality of fixed connection portions 223, a plurality of support connection portions 222, and a plurality of radial positioning support portions 221; and radial positioning can also be achieved by limiting the displacement of a plurality of sample containers 10 disposed at the same axial height in the radial direction.

[0049] In some embodiments, the radial positioning support portion 221 is conformed to the outer shell 12 of the sample container 10 to provide radial positioning and support for the sample container 10 .

[0050] In some embodiments, the sample mounting portion 106 of the sample container 10 is plug-in-connected with the mounting matching portion 211 of the axial positioning support 21, and the radial positioning support portion 221 of the radial positioning support 22 is plug-in-connected with the sample container 10 to provide radial positioning and radial support for the sample container 10. The above arrangement enables rapid disassembly and assembly of the sample container 10, and even during the irradiation test, rapid disassembly and assembly of a certain sample container 10 or all sample containers 10 at a certain height.

[0051] See also Figure 1 In some embodiments, the mounting portion 30 may include a first column 31, a second column 32, and an elastic member. The first column 31 is connected to the fixing member 23; the second column 32 is connected to the first column 31, and is used to mount a plurality of sample containers 10 to the irradiation test device; the elastic member is disposed on the first column 31, and is used to provide an action force to the second column 32 to prevent the irradiation sample loading device 100 from tipping over. In such an embodiment, the elastic member provides an action force to the second column 32 to prevent the irradiation sample loading device 100 from tipping over due to external forces such as flow-induced vibration, so as to facilitate the smooth progress of the irradiation test.

[0052] In some embodiments, the irradiation test device includes a sample support plate, which is formed with a sample mounting hole. The second column member 32 can be inserted into the sample mounting hole, and the elastic member can abut against the sample support plate to provide a force to fix the second column member 32 to the sample support plate, thereby ensuring that the irradiation sample loading device 100 does not tip over.

[0053] The elastic member is, for example, a spring. The first column member 31 and the second column member 32 are, for example, solid structures transitioning from regular hexagonal prisms to cylindrical columns.

[0054] In some embodiments, the first column member 31 and the fixing member 23 are connected by welding.

[0055] In some embodiments, the irradiation sample loading device 100 may further include a temperature measuring element for measuring the temperature in the containing cavity 101. In some embodiments, each sample container 10 is further formed with a mounting interface penetrating the inner shell 11 and the outer shell 12 for mounting a temperature measuring element. The temperature measuring element is, for example, a thermocouple.

[0056] See also Figure 1In some embodiments, the irradiation sample loading device 100 may further include an instrument pipe 40 connected to the fixing member 23, and the instrument pipe 40 is configured so that the measuring instrument line connected to the measuring instrument required for the irradiation test and the external gas supply pipeline can enter the fixing member 23 through the instrument pipe 40. In such an embodiment, the measuring instrument line can be separated from the coolant by the instrument pipe 40 to avoid contact between the measuring instrument line and the coolant, thereby improving the reliability and service life of the measuring instrument line, and facilitating the maintenance of the measuring instrument line.

[0057] The instrument pipe 40 is, for example, a hollow tube that is a transition from a regular hexagonal prism to a cylinder. In some embodiments, the instrument pipe 40 is connected to the fixing member 23 by welding.

[0058] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0059] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. An irradiation sample loading device, used to place a plurality of irradiation samples in an irradiation test device for irradiation test, characterized in that: include: A plurality of sample containers, each of which is formed with a receiving cavity, wherein the plurality of irradiated samples are arranged in the receiving cavity, and the receiving cavity is arranged to allow a coolant to flow into the receiving cavity to cool the irradiated samples; A positioning support portion, configured to support the plurality of sample containers and locate the positions of the plurality of sample containers; A mounting portion, configured to be connected to the positioning support portion, so as to be used for mounting the plurality of sample containers to the irradiation test device; The sample container is configured to adjust the temperature and coolant flow rate in the containing cavity, so that the irradiated samples arranged in the containing cavities of different sample containers can be subjected to irradiation tests at different temperatures and coolant flow rates.

2. The irradiation sample loading device according to claim 1, characterized in that: Each of the sample containers comprises: An inner shell, configured to form the accommodating cavity; The outer shell is arranged on the outer side of the inner shell, and a temperature regulating chamber is formed between the inner shell and the outer shell for regulating the temperature in the containing chamber; wherein one irradiated sample can be arranged in the containing chamber of each sample container.

3. The irradiation sample loading device according to claim 2, characterized in that: Each of the sample containers also includes a gas filling pipeline, which is arranged to be in fluid communication with the temperature regulating chamber and is used to fill the temperature regulating chamber with a mixed gas, and adjust the temperature in the containing chamber by adjusting the filled mixed gas.

4. The irradiation sample loading device according to claim 1, characterized in that: Each of the sample containers is formed with a coolant inlet and a coolant outlet, The coolant inlet and the coolant outlet of each sample container are both configured to have an adjustable opening to adjust the coolant flow rate in each sample container.

5. The irradiation sample loading device according to claim 1, characterized in that: The positioning support portion comprises: A plurality of axial positioning support members, used for providing axial positioning and axial support for the plurality of sample containers, each of the sample containers being arranged between two of the axial positioning support members; A plurality of radial positioning support members, used for providing radial positioning and radial support for the plurality of sample containers, each of the radial positioning support members being disposed between two of the axial positioning support members and disposed at an axial middle height of each of the sample containers; A fixing member is used to fix the multiple axial positioning supports and the multiple radial positioning supports, the multiple axial positioning supports and the multiple radial positioning supports are fixedly connected to the fixing member, and the multiple sample containers are respectively located at different axial heights of the fixing member to be positioned and supported by the axial positioning supports and the radial positioning supports arranged at the corresponding axial heights.

6. The irradiation sample loading device according to claim 5, characterized in that: The side wall of each sample container is respectively formed with two sample mounting portions; The periphery of each of the axial positioning support members forms a mounting fitting portion, and the mounting fitting portion is matched with the sample mounting portion in a contour; The two sample mounting portions of each sample container can be connected to the mounting matching portions of two axial positioning supports to place each sample container between the two axial positioning supports.

7. The irradiation sample loading device according to claim 6, characterized in that: The sample installation portion is a groove, the installation matching portion is a notch, the radius of the notch is larger than the radius of the groove, and the radius of the notch is smaller than the outer diameter of the sample container.

8. The irradiation sample loading device according to claim 5, characterized in that: The irradiation test device comprises a test outer shell and a test inner shell arranged inside the test outer shell, the irradiation sample loading device is used to place a plurality of irradiation samples in the test inner shell of the irradiation test device, and a coolant is contained in the test inner shell; The irradiation test device further includes a driving unit, which is disposed in the test outer shell and is used to drive the coolant in the test inner shell to flow; Each of the axial positioning supports is formed with a plurality of cooling through holes, and the driving unit can drive the coolant in the test inner shell to flow through the plurality of cooling through holes so as to mix and homogenize the coolant flow field in the test inner shell; the coolant after flowing through the plurality of cooling through holes flows into each of the sample containers.

9. The irradiation sample loading device according to claim 7, characterized in that: Each of the radial positioning supports comprises: A plurality of radial positioning support portions, each of which is disposed at an axial middle height of each of the sample containers and is used to provide radial positioning and radial support for the sample containers; A plurality of support connection parts, arranged between two adjacent radial positioning support parts, and used to connect the two adjacent radial positioning support parts; A plurality of fixed connection parts, each of which is formed on each of the radial positioning support parts, and the plurality of fixed connection parts are fixedly connected to the fixing member.

10. The irradiation sample loading device according to claim 9, characterized in that: The sample mounting portion of the sample container is plug-in-plug connected to the mounting matching portion of the axial positioning support; The radial positioning support portion of the radial positioning support member is pluggably connected to the sample container to provide radial positioning and radial support for the sample container.

11. The irradiation sample loading device according to claim 9, characterized in that: The installation part comprises: A first column member connected to the fixing member; a second column connected to the first column and used for installing the plurality of sample containers to the irradiation test device; The elastic member is arranged on the first column member and is used to provide a force on the second column member to prevent the irradiation sample loading device from tipping over.

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