Irradiation device based on non-standard sample

Abstract

The invention discloses an irradiation device based on a non-standard sample, and belongs to the technical field of irradiation devices, the irradiation device comprises a sample box, an irradiation cladding and a positioning grillwork, the sample box is used for an irradiation test; the irradiation cladding is used for being placed in a sample box and comprises a first end cover, a cladding tube and a second end cover; the two ends of the cladding pipe are communicated through the interior, and the first end cover and the second end cover are used for connecting and sealing the two ends of the cladding pipe. The interior of the positioning grillwork is hollow, hollow holes are formed in the side face of the positioning grillwork, the interior of the positioning grillwork is used for loading a plurality of non-standard samples, and the positioning grillwork is used for being placed in the cladding tube. Under the condition of limited irradiation space, irradiation materials of a plurality of non-standard samples can be loaded, and efficient loading is realized, so that rich material irradiation test data is obtained, and an effective way for solving the problems of difficulty in application performance evaluation and few data of high-performance materials is provided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of irradiation devices, and particularly relates to an irradiation device based on non-standard samples. BACKGROUND

[0002] Materials are the key to the research and development of new nuclear energy systems and are the core elements for effectively improving the safety, economy, and environmental friendliness of reactors. More radiation-resistant materials can significantly improve the economy and long-term operation safety of reactors. Influenced by reactor irradiation, the thermal physical properties (such as thermal conductivity, thermal expansion coefficient, and melting point) and mechanical properties (such as hardness, stiffness, and creep performance) of materials can change, which can affect important indicators such as temperature distribution, mechanical strength, and structural integrity of materials under normal operation and accident conditions of reactors. Therefore, in the research and development of new nuclear energy systems, strict material sample irradiation tests in reactors must be carried out to obtain the key performance damage changes of materials after irradiation and evaluate the comprehensive influence of irradiation effects on fuels and reactors.

[0003] At present, high-flux neutron irradiation resources are scarce, and the number of conventional standard-size samples loaded in the irradiation space is limited, so it is difficult to obtain sufficient evaluation data of materials after irradiation, which seriously restricts the development of new nuclear energy systems. Therefore, there is currently a lack of irradiation devices based on non-standard samples that can be efficiently loaded for irradiation. SUMMARY

[0004] The present application aims to solve the technical problem of efficient loading of irradiation devices based on non-standard samples. To this end, the present application provides an irradiation device based on non-standard samples, which can load multiple non-standard sample irradiation materials in a limited irradiation space, achieve efficient loading, and thus obtain rich material irradiation test data.

[0005] The present application provides an irradiation device based on non-standard samples, which comprises:

[0006] A sample box for irradiation tests;

[0007] An irradiation cladding for being placed in the sample box, the irradiation cladding comprising a first end cover, a cladding tube, and a second end cover; the two ends of the cladding tube are connected by an internal passage, and the first end cover and the second end cover are used to connect and close the two ends of the cladding tube;

[0008] A positioning grid frame with an internal hollow structure and a side surface provided with a lattice, the internal part of the positioning grid frame being used to load multiple non-standard samples, and the positioning grid frame being used to be placed in the cladding tube.

[0009] In some embodiments, a positioning plug is further included, which is fitted with the two ends of the cladding tube and is used to position and axially support the cladding tube in the sample box.

[0010] In some embodiments, the positioning plug comprises a first end plug and a second end plug made of thermal insulation material, both provided with blind holes and fitted with both ends of the cladding tube.

[0011] In some embodiments, the other end of the first end plug and the second end plug opposite to the blind hole is provided with a positioning ring, which is clamped with the sample box.

[0012] In some embodiments, a metal structure made of heat-conducting metal is further included, which is sleeved outside the cladding tube for positioning the cladding tube and adjusting the temperature of the irradiation non-standard sample when different thickness specifications are selected.

[0013] In some embodiments, the metal structure comprises a first open sleeve and a second open sleeve, which are combined to be sleeved outside the cladding tube, and the end surface of the blind hole of the first end plug and the second end plug is provided with a notch, and the two ends of the first open sleeve and the second open sleeve are matched with the notches of the first end plug and the second end plug, respectively.

[0014] In some embodiments, when the positioning grid is loaded with multiple non-standard samples and placed in the cladding tube, the first end cover and the second end cover are welded and closed at both ends of the cladding tube.

[0015] In some embodiments, the non-standard sample comprises a non-standard creep sample, a thermal conductivity sample, a microstructure sample and a fracture toughness sample.

[0016] In some embodiments, the sample box comprises a top cover, a barrel and a bottom cover, the inside of the barrel is used for placing the irradiation cladding, and the top cover and the bottom cover are used for connecting and closing both ends of the barrel.

[0017] In some embodiments, the sample box further comprises multiple positioning ribs, which are annularly arranged on the outer wall of the barrel, and the positioning ribs are used for positioning in the irradiation channel.

[0018] From the above technical solutions, the beneficial effects of the present application are as follows:

[0019] The positioning grid can load multiple non-standard samples, and the positioning grid loaded with multiple non-standard samples is closed in the cladding tube by the first end cover and the second end cover, and then placed in the sample box, so that multiple non-standard samples can be irradiated at the same time when the sample box is directly subjected to irradiation test, and the present application can load multiple irradiation materials of non-standard samples under the condition of limited irradiation space, realize efficient loading, and thus obtain rich material irradiation test data, which can be used as an effective basis for performance evaluation of materials. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced one by one. Obviously, the drawings in the following description are some embodiments of the present application, and other embodiments and drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings. In the drawings, various schematic diagrams according to the embodiments of the present application are shown, which are not necessarily drawn to scale, some details are exaggerated for the purpose of clarity, and some details can be omitted.

[0021] Figure 1 An embodiment structure schematic diagram of the irradiation device based on non-standard samples of the present application is shown.

[0022] Figure 2 A perspective schematic diagram of an embodiment of the irradiation capsule of the present application is shown.

[0023] Figure 3 An embodiment schematic diagram of the irradiation device based on non-standard samples of the present application placed in the irradiation channel is shown.

[0024] Figure 4 A perspective schematic diagram of an embodiment of the sample box of the present application is shown.

[0025] Figure 5 An embodiment schematic diagram of the positioning grid of the present application is shown.

[0026] Figure 6 An embodiment schematic diagram of the first end plug of the present application is shown.

[0027] Figure 7 An embodiment schematic diagram of the second end plug of the present application is shown.

[0028] Figure 8 A perspective schematic diagram of an embodiment of the metal structure of the present application is shown.

[0029] Figure 9 An embodiment schematic diagram of the non-standard sample of the present application is shown.

[0030] Reference signs: 10, sample box; 11, top cover; 12, barrel; 13, bottom cover; 14, positioning rib; 20, irradiation capsule; 21, first end cover; 22, capsule tube; 23, second end cover; 30, positioning grid; 31, grid plate; 40, positioning plug; 41, first end plug; 411, blind hole; 412, positioning ring; 413, notch; 42, second end plug; 50, metal structure; 51, first open sleeve; 52, second open sleeve; 60, non-standard sample; 61, creep sample; 62, thermal conductivity sample; 63, microstructure sample; 64, fracture toughness sample; a, irradiation channel; b, annular cooling flow channel. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely in the following detailed description of the embodiments of the present application with reference to the drawings corresponding to the detailed description of the present application. The detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application, and the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, various different configurations can be arranged and designed, and all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0032] The present application will be described below with reference to the drawings and in conjunction with specific embodiments:

[0033] Please refer to Figure 1 The present application provides an irradiation device based on non-standard samples 60, which comprises a sample box 10, an irradiation cladding 20 and a positioning grid 30. The sample box 10 has a space for accommodating the irradiation cladding 20. The sample box 10 serves as a container for loading and is used for irradiation tests, such as placing the sample box 10 directly in the irradiation area. The irradiation cladding 20 is placed in the sample box 10. The irradiation cladding 20 comprises a first end cover 21, a cladding tube 22 and a second end cover 23. The two ends of the cladding tube 22 are connected internally. The cladding tube 22 is in the shape of a tube. The first end cover 21 and the second end cover 23 are used to connect and close the two ends of the cladding tube 22. The first end cover 21 and the second end cover 23 are detachably connected to the two ends of the cladding tube 22, or they can be welded together during use. The first end cover 21 and the second end cover 23 close the interior of the cladding tube 22. The positioning grid 30 is hollow inside and has perforations on the side. The positioning grid 30 is in the shape of a frame. The interior of the positioning grid 30 is used to load multiple non-standard samples 60. The multiple non-standard samples 60 can be stacked together and placed in the positioning grid 30. This allows compact arrangement of multiple non-standard samples 60 of different sizes. The positioning grid 30 is placed in the cladding tube 22. During use, the positioning grid 30 loaded with multiple non-standard samples 60 is placed in the cladding tube 22, and the first end cover 21 and the second end cover 23 are closed. The irradiation cladding 20 is then placed in the sample box 10. The atmosphere in the cladding tube 22 and the sample box 10 can be flexibly selected as helium or neon according to the requirements of the irradiation test.

[0034] The prior art irradiation device has a limited number of samples loaded in the irradiation space, and cannot efficiently load the non-standard samples 60. The positioning grid 30 of the present application can load multiple non-standard samples 60, and the positioning grid 30 loaded with multiple non-standard samples 60 is placed in the cladding tube 22, and the first end cover 21 and the second end cover 23 can seal the positioning grid 30 loaded with multiple non-standard samples 60 in the cladding tube 22, and then placed in the sample box 10. When the sample box 10 is directly irradiated, multiple non-standard samples 60 can be irradiated at the same time. The present application can load multiple irradiation materials of non-standard samples 60 under the condition of limited irradiation space, realize efficient loading, and obtain rich material irradiation test data. Based on these data, the performance of the material can be effectively evaluated.

[0035] Please refer to Figure 2 and Figure 3 In some embodiments, when the positioning grid 30 loaded with multiple non-standard samples 60 is placed in the cladding tube 22, the first end cover 21 and the second end cover 23 are welded and sealed at both ends of the cladding tube 22. The absolute effective packaging of the sample is ensured by welding. The irradiation cladding 20 forms a sealed tube structure, which is convenient for irradiation test. In some embodiments, the sample box 10 is used to be placed in the irradiation channel a, and the annular cooling flow channel b is formed between the outer wall of the sample box 10 and the inner wall of the irradiation channel a. The coolant can uniformly flow through the annular cooling flow channel b around the sample box 10. The present application can be applied in a high-flux research reactor to carry out sample neutron irradiation test and obtain more irradiation test data under the condition of limited irradiation space.

[0036] Please refer to Figure 4 In some embodiments, the sample box 10 includes a top cover 11, a barrel 12, and a bottom cover 13. The top cover 11, the barrel 12, and the bottom cover 13 are all made of nuclear-grade 6061 aluminum alloy. The barrel 12 has a barrel structure, and the inside of the barrel 12 is communicated through both ends. The inside of the barrel 12 is used to place the irradiation cladding 20. The top cover 11 and the bottom cover 13 are used to connect and seal both ends of the barrel 12. The top cover 11 and the bottom cover 13 are respectively provided with external threads, and the two ends of the barrel 12 are respectively provided with internal threads. In this way, the top cover 11 and the bottom cover 13 are threadedly connected to the two ends of the barrel 12.

[0037] In some embodiments, the sample box 10 further comprises a plurality of positioning ribs 14, which are respectively annularly arranged on the outer wall of the barrel 12 and are used for positioning in the irradiation channel a; for example, eight positioning ribs 14 are divided into two groups, and each group comprises four positioning ribs 14 which are equidistantly arranged around the outer wall of the barrel 12. The positioning ribs 14 have a block structure and can be formed by protruding from the outer wall of the barrel 12. When the sample box 10 is placed in the irradiation channel a, the positioning ribs 14 support and centrally position the sample box 10 in the radial center of the irradiation channel a, and an annular cooling flow channel b is formed between the outer wall of the sample box 10 and the inner wall of the irradiation channel a, which effectively ensures the uniformity of cooling and ensures the safe heat transfer of the irradiation device.

[0038] For reference Figure 5 In some embodiments, the material of the positioning grid 30 is 316L stainless steel. The positioning grid 30 comprises four grid plates 31, which are plate-shaped and each has a perforated hole to communicate the two sides of the grid plate 31. The four grid plates 31 are adjacently spliced to form a hollow structure, which limits the plurality of non-standard samples 60, and the non-standard samples 60 are placed between the four grid plates 31. The hollow structure has the advantage of reducing the total amount of radioactive waste after sample irradiation. When the four grid plates 31 are used, the internal space of the cladding tube 22 can be designed as a cuboid matching the outer periphery of the positioning grid 30, which facilitates the effective fixation of the positioning grid 30 in the cladding tube 22.

[0039] For reference Figure 6 and Figure 7 In some embodiments, the irradiation device further comprises a positioning plug 40 which is fitted with the two ends of the cladding tube 22, for example, the two ends of the cladding tube 22 are fitted into the positioning plug 40, and the positioning plug 40 is used for positioning and axially supporting the cladding tube 22 in the sample box 10. In some embodiments, the positioning plug 40 comprises a first end plug 41 and a second end plug 42 made of heat-insulating material, and each has a blind hole 411 and is fitted with the two ends of the cladding tube 22. The heat-insulating material is, for example, ceramic, specifically zirconia ceramic, which can ensure that the heat of the irradiation cladding 20 is not transmitted to the sample box 10. The opposite surfaces of the first end plug 41 and the second end plug 42 are concavely formed to form the blind hole 411, and the two ends of the cladding tube 22 and the first end cover 21 and the second end cover 23 together can be fitted into the corresponding blind hole 411 to match, thereby ensuring the axial positioning of the irradiation cladding 20 in the sample box 10.

[0040] For reference Figure 6In some embodiments, the other end of the first end plug 41 and the second end plug 42 opposite to the blind hole 411 is provided with a positioning ring 412, that is, one of the two end faces of the first end plug 41 and the second end plug 42 is provided with the blind hole 411, and the other end face is provided with the positioning ring 412. The positioning ring 412 is protruded from the end face of the first end plug 41 and the second end plug 42, and is clamped with the sample box 10. For example, the inner wall of the first end cover 21 and the second end cover 23 is provided with a notch, and the positioning ring 412 of the first end plug 41 and the second end plug 42 is clamped into the notch of the first end cover 21 and the second end cover 23 respectively. In this way, the irradiation capsule 20 can be effectively positioned and supported through the positioning ring 412.

[0041] In some embodiments, the irradiation device further comprises a metal structure 50 made of heat-conducting metal, which is sleeved outside the capsule tube 22 and used for positioning the capsule tube 22 and adjusting the temperature of the irradiation non-standard sample 60 when different thickness specifications are selected. The metal structure 50 is made of heat-conducting metal such as copper or aluminum alloy, has high heat release rate and high thermal conductivity in the reactor, and ensures that the irradiation capsule 20 and the non-standard sample 60 are kept in a uniform high temperature state. The metal structure 50 has multiple thickness specifications, and different thicknesses can be selected to be placed in the sample box 10. By selecting a metal structure 50 with a certain thickness, flexible temperature adjustment of the irradiation non-standard sample 60 can be realized.

[0042] The uniform high temperature is due to the following reasons: first, the thermal conductivity of copper is very high, about 150-200 W / (m·K), and higher thermal conductivity can effectively reduce the temperature gradient and uniform the internal temperature field; second, the internal heat source of copper in the reactor is generally higher (because different materials have different ways of reacting with neutrons and photons, for 6061Al material, the internal heat source is generally 1.0-1.5 W / cm 3 , and the internal heat source of copper can reach 5.0-6.0 W / cm 3 under the same conditions), and higher internal heat source can effectively improve the temperature of the internal wrapped material. Based on the above two advantages, the uniform high temperature of the irradiation capsule 20 and the sample in the capsule can be ensured.

[0043] By selecting the thickness specification of the metal structure 50, specifically, any material placed in the reactor will generate spontaneous heat release under the action of neutrons, photons and other particles in the reactor (assuming that the heat source Q=XX W / cm 3). By changing the thickness of the copper structure, two aspects will be affected: one is that the mass and volume of the copper structural material in the sample box 10 will change (that is, Q will change); two is that there is generally a certain air cavity space between the copper structure and the adjacent sample box 10 wall, and the change of the thickness of the copper structure will also affect the thickness of the air cavity space, and also affect the internal sample temperature. However, the specific influence of the copper structure on the irradiation temperature is the comprehensive influence of the above two effects (for example, the increase of the thickness of the copper structure will increase the heat source Q in the material, which has the trend of increasing the sample temperature; but it will also lead to the decrease of the air cavity thickness, and due to the low thermal conductivity of the gas, it can be used as a heat preservation layer, which is equivalent to the weakening of the gas heat preservation effect, which has the trend of reducing the sample temperature), which is generally obtained by theoretical calculation, and it is difficult to obtain accurate calculation formula or qualitative temperature change trend.

[0044] Please refer to Figure 8 In some embodiments, the metal structure 50 includes a first open sleeve 51 and a second open sleeve 52, which are combined to be sleeved outside the cladding tube 22. The first open sleeve 51 and the second open sleeve 52 are respectively half of the axial section of the cylinder structure, and the first open sleeve 51 and the second open sleeve 52 are abutted along the edges to form a cylinder structure and can sleeve the cladding tube 22 between them. The end face of the blind hole 411 on the first end plug 41 and the second end plug 42 is provided with a notch 413, and the two ends of the first open sleeve 51 and the second open sleeve 52 are respectively outwardly convex to form a half flange ring structure, and when they are combined, two flange rings are formed, and the flange rings at the two ends of the first open sleeve 51 and the second open sleeve 52 are respectively matched into the notches 413 of the first end plug 41 and the second end plug 42. In this way, the first open sleeve 51 and the second open sleeve 52 can position the cladding tube 22 between the first end plug 41 and the second end plug 42 after being combined, and can ensure reliable assembly and safe removal after irradiation.

[0045] Please refer to Figure 9In some embodiments, the non-standard sample 60 includes a non-standard creep sample 61, a non-standard thermal conductivity sample 62, a non-standard microstructure sample 63, and a non-standard fracture toughness sample 64. The non-standard sample 60 has a small size, and the size range is 3-22 mm. The size range of the non-standard sample 60 is as follows: the non-standard creep sample 61 has a length of 18-22 mm, a width of 4-8 mm, and a thickness of 1-2 mm; the non-standard thermal conductivity sample 62 has a length of 4-6 mm, a width of 4-6 mm, and a thickness of 1-3 mm; the non-standard microstructure sample 63 has a length of 3-5 mm, a width of 2-4 mm, and a thickness of 1-2 mm; and the non-standard fracture toughness sample 64 has a length of 16-22 mm, a width of 4-6 mm, and a thickness of 2.5-3.5 mm. The use of the non-standard sample 60 can compactly arrange the non-standard sample 60 in the cladding tube 22, load a larger number of irradiation samples in the same space, improve the utilization rate of the irradiation space in the sample box 10, and thus obtain more irradiation test data and improve the utilization of neutron irradiation resources in the high-flux research reactor.

[0046] In the specific embodiments of the present application, it should be noted that:

[0047] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connection", "fixation", "communication" and the like should be understood in a broad sense, for example, "fixation" can be fixed connection, or detachable connection, or one-piece; "connection" can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited; "communication" can be the internal communication of two components and the space between the two components, or the connection of the two components directly or indirectly through the part forming the space. The terms "set", "install", "provided with", "configured" and the like should also be understood in a broad sense. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] In the description of the present application, the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the systems or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. All directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0049] In the description of the application, the description of the terms "some embodiments", "optional embodiments", "examples", "specific examples", "optional examples" or "optional embodiments" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the application, but does not mean that all possible forms of the application are described and described by these embodiments. In the present specification, the illustrative description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification.

[0050] The application has been described in detail above with reference to specific embodiments and exemplary examples. The above description is exemplary and is not exhaustive, and is not limited to the disclosed embodiments; the above description cannot be understood as limiting the application. The technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor in the protection scope required by the present application. Although the embodiments of the application have been shown and described, various changes, modifications, replacements and variations of these embodiments can be made without departing from the principles and purposes of the application. Those skilled in the art can understand that various other specific changes and combination embodiments which do not deviate from the essence of the application can be made according to the technical inspiration disclosed in the present application, and still within the protection scope defined by the claims of the present application and its equivalent technical solutions.

Claims

1. An irradiation device based on non-standard samples, characterized in that: include: A sample box (10) for irradiation testing; An irradiation cladding (20) is used to be placed in the sample box (10), and the irradiation cladding (20) includes a first end cover (21), a cladding tube (22), and a second end cover (23); both ends of the cladding tube (22) are connected through the interior, and the first end cover (21) and the second end cover (23) are used to connect and seal the two ends of the cladding tube (22); The positioning grid (30) is hollow inside and has holes on the side. The interior of the positioning grid (30) is used to load a plurality of non-standard samples (60). The positioning grid (30) is used to be placed in the cladding tube (22).

2. The irradiation device based on non-standard samples according to claim 1, characterized in that: It also includes positioning plugs (40) that are engaged with both ends of the cladding tube (22) and are used to position and axially support the cladding tube (22) in the sample box (10).

3. The irradiation device based on non-standard samples according to claim 2, characterized in that: The positioning plug (40) comprises a first end plug (41) and a second end plug (42) made of a heat-insulating material, both of which are provided with a blind hole (411) and are respectively engaged with the two ends of the cladding tube (22).

4. The irradiation device based on non-standard samples according to claim 3, characterized in that: A positioning ring (412) is provided on the other end of the first end plug (41) and the second end plug (42) opposite to the blind hole (411), and the positioning ring (412) is engaged with the sample box (10).

5. The irradiation device based on non-standard samples according to claim 3, characterized in that: It also includes a metal structure (50) made of heat-conducting metal, which is sleeved outside the cladding tube (22) and is used to position the cladding tube (22) and adjust the temperature of the irradiated non-standard sample (60) when different thickness specifications are selected.

6. The irradiation device based on non-standard samples according to claim 5, characterized in that: The metal structure (50) includes a first open sleeve (51) and a second open sleeve (52). When the first open sleeve (51) and the second open sleeve (52) are combined, they are sleeved outside the cladding tube (22). The end faces of the blind holes (411) on the first end plug (41) and the second end plug (42) are provided with notches (413). The two ends of the first open sleeve (51) and the second open sleeve (52) are matched with the notches (413) of the first end plug (41) and the second end plug (42), respectively.

7. The irradiation device based on non-standard samples according to claim 1, characterized in that: When the spacer grid (30) is loaded with a plurality of non-standard samples (60) and placed in the cladding tube (22), the first end cover (21) and the second end cover (23) are welded and sealed at both ends of the cladding tube (22).

8. The irradiation device based on non-standard samples according to claim 7, characterized in that: The non-standard sample (60) includes a non-standard creep sample (61), a thermal conductivity sample (62), a microstructure sample (63) and a fracture toughness sample (64).

9. The irradiation device based on non-standard samples according to claim 1, characterized in that: The sample box (10) comprises a top cover (11), a cylinder (12) and a bottom cover (13); the interior of the cylinder (12) is used to place the irradiation envelope (20); and the top cover (11) and the bottom cover (13) are used to connect and seal the two ends of the cylinder (12).

10. The irradiation device based on non-standard samples according to claim 9, characterized in that: The sample box (10) further comprises a plurality of positioning ribs (14) respectively arranged around the outer wall of the cylinder (12), and the positioning ribs (14) are used for positioning in the irradiation channel (a).

Images