Irradiation test device and irradiation test system

Abstract

The invention provides an irradiation test device and an irradiation test system. The irradiation test device comprises an outer shell and a capsule fixing block arranged in the outer shell, the capsule fixing block is used for installing a sample capsule assembly, the capsule fixing block is further provided with at least one compensation piece installation groove, and the compensation piece installation groove is used for detachably installing a compensation piece. And the densities of at least two of the plurality of compensation pieces are different. In this way, the compensation pieces with different densities are installed in the compensation piece installation groove, and the temperature of the environment where the sample is located is regulated and controlled. Namely, the requirements of different environment temperatures can be met through the same irradiation test device, the disassembly and assembly process of the compensation piece is simple, the test process can be effectively simplified, and the cost is lower.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear equipment, and in particular to an irradiation test device and an irradiation test system. Background Art

[0002] As the nuclear industry enters a period of vigorous development, the demand for various new nuclear materials continues to increase. Before new materials are put into use, it is necessary to verify the physical and chemical properties of the materials on the test reactor to ensure that the new materials can meet the design and operation requirements of the reactor.

[0003] Usually, the irradiated materials are processed into samples that meet various performance tests, arranged and clamped according to a certain pattern, and then placed into the pile with the irradiation test device. Different irradiation conditions are usually required in the test to verify the performance of the samples under different conditions.

[0004] However, the existing irradiation test equipment has poor control capability over the ambient temperature of the sample. In some tests that require different ambient temperatures, multiple dedicated irradiation test equipment are required to meet the requirements of different ambient temperatures, which makes the test process more complicated and more costly. Summary of the invention

[0005] In order to at least partially solve the problems existing in the prior art, according to one aspect of the present invention, an irradiation test device is provided. The irradiation test device comprises an outer shell and a capsule fixing block disposed in the outer shell, the capsule fixing block is used to install the sample capsule assembly, wherein the capsule fixing block is also provided with at least one compensation member installation groove, the compensation member installation groove is used to detachably install the compensation member, and there are multiple compensation members and at least two of the multiple compensation members have different densities.

[0006] The irradiation test device provided by the present application realizes the regulation of the ambient temperature of the sample by installing compensating parts of different densities in the compensating part installation groove. That is, the same irradiation test device can meet the requirements of different ambient temperatures, and the disassembly and assembly process of the compensating parts is simple, which can effectively simplify the test process and reduce the cost.

[0007] Exemplarily, the capsule fixing block and the outer shell are spaced apart to form a first heat-insulating cavity.

[0008] Exemplarily, a capsule mounting groove separated from the compensation piece mounting groove is provided on the capsule fixing block, the sample capsule assembly is installed in the capsule mounting groove, and the gap between the sample capsule assembly and the groove wall of the capsule mounting groove forms a second insulation cavity.

[0009] Exemplarily, the outer shell includes an irradiation tube and a first end cap and a second end cap respectively located at opposite ends of the irradiation tube, the first end cap, the irradiation tube and the second end cap together enclose an irradiation test chamber, the first insulation chamber and the second insulation chamber are both located in the irradiation test chamber and are both connected to the irradiation test chamber, the irradiation test device also includes an air inlet pipe and an air outlet pipe, one end of the air inlet pipe is connected to the irradiation test chamber and the other end is connected to an external air source, one end of the air outlet pipe is connected to the irradiation test chamber and the other end is connected to the external air.

[0010] Exemplarily, there are at least two air intake pipes, and different air intake pipes are connected to different types of external air sources.

[0011] Exemplarily, the sample capsule assembly includes a capsule shell and a sample fixing member for mounting the sample, wherein the sample fixing member is located inside the capsule shell, and the sample fixing member and the capsule shell are spaced apart to form a third heat-insulating cavity.

[0012] Exemplarily, the irradiation test device further includes a heating element, a portion of the structure of the heating element extends into the capsule fixing block and is separated from the compensation element mounting groove.

[0013] Exemplarily, a capsule mounting groove is provided in the capsule fixing block, there are a plurality of capsule mounting grooves which are spaced apart from each other, there are at least two compensation member mounting grooves, and each compensation member mounting groove is located between two adjacent capsule mounting grooves.

[0014] Exemplarily, the irradiation test device further includes a capsule thermocouple, a detection end of the capsule thermocouple extends into the capsule fixing block, and a connection end of the capsule thermocouple passes through the outer shell to be electrically connected to an external measurement and control system.

[0015] According to another aspect of the present invention, there is also provided an irradiation test system comprising any one of the above irradiation test devices.

[0016] A series of simplified concepts are introduced in the summary of the invention, which will be further described in detail in the detailed description. The summary of the invention is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0017] The advantages and features of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings of the present invention are used as part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention. In the drawings,

[0019] Figure 1 is a cross-sectional view of an irradiation test device according to an exemplary embodiment of the present invention;

[0020] Figure 2 A cross-sectional view of a partial structure of an irradiation test device according to an exemplary embodiment of the present invention;

[0021] Figure 3 for Figure 2 Sectional view at AA in the middle;

[0022] Figure 4 is a three-dimensional diagram of a capsule fixing block according to an exemplary embodiment of the present invention;

[0023] Figure 5 is a cross-sectional view of a sample capsule assembly according to an exemplary embodiment of the present invention;

[0024] Figure 6 for Figure 5 Cross-section at the middle BB;

[0025] Figure 7 A three-dimensional diagram of a first position-limiting end cover according to an exemplary embodiment of the present invention;

[0026] Figure 8 is a perspective view of a sample fixture according to an exemplary embodiment of the present invention;

[0027] Fig. 9 A perspective view of a protective case according to an exemplary embodiment of the present invention;

[0028] Fig.10 FIG. 4 is a perspective view of a capsule cover according to an exemplary embodiment of the present invention.

[0029] The above drawings include the following reference numerals:

[0030] 10. Irradiation test device; 100. Outer shell; 101. Irradiation test chamber; 102. First heat insulation chamber; 103. Second heat insulation chamber; 110. Irradiation tube; 120. Support block; 130. Air outlet pipe; 140. Air inlet pipe; 150. Heating element; 160. Capsule thermocouple; 171. First end cover; 172. Second end cover; 180. Elastic component; 200. Sample capsule component; 201. Sample accommodating space; 202. Third heat insulation chamber; 210. Capsule shell; 2110. Protective shell; 2120. Capsule top cover; 2130. Capsule bottom cover; 2140. Guide tube; 22 0. Sample fixing part; 2210. Sample thermocouple mounting groove; 2310. First limiting end cover; 2320. Second limiting end cover; 240. First limiting rib; 250. Third limiting rib; 260. Connecting pipe; 300. Capsule fixing block; 310. Compensation part mounting groove; 320. Capsule mounting groove; 330. Second limiting rib; 400. Compensation part; 510. Support pipe; 520. Mounting flange; 530. Air inlet connector; 540. Thermocouple seal; 550. First connecting pipe; 560. Second connecting pipe; 610. Neutron detection box; 620. Support rod; 90. Sample. DETAILED DESCRIPTION

[0031] In the following description, a large amount of details are provided so that the present invention can be thoroughly understood. However, it will be appreciated by those skilled in the art that the following description only exemplarily illustrates a preferred embodiment of the present invention, and the present invention can be implemented without one or more such details. In addition, in order to avoid confusion with the present invention, some technical features well known in the art are not described in detail.

[0032] In order to fully understand the embodiments of the present invention, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0033] An embodiment of the present invention provides an irradiation test device, which can verify the performance of a sample such as the amount of gas released under irradiation conditions.

[0034] Combined with reference Figure 1 , Figure 2 and Figure 3, the irradiation test device 10 may include an outer shell 100 and a capsule fixing block 300 disposed in the outer shell 100. The capsule fixing block 300 may be used to install and fix the sample capsule assembly 200. It is understandable that the sample 90 is installed in the sample capsule assembly 200. The sample capsule assembly 200 may be connected to the pressure detection system to perform corresponding test operations on the sample 90. Specifically, a sample accommodating space 201 is formed inside the sample capsule assembly 200, and the sample 90 is installed in the sample accommodating space 201. The sample accommodating space 201 is connected to the pressure detection system through a connecting pipe 260. The pressure detection system can detect the pressure in the sample accommodating space 201, and can know the amount of gas released by the sample 90 under irradiation conditions. Exemplarily, the sample accommodating space 201 can be filled with 1atm of argon or 1atm of helium and then sealed. The temperature of the environment in which the sample 90 is located can be regulated by introducing gases with different thermal insulation coefficients.

[0035] Among them, at least one compensating member installation groove 310 may also be provided on the capsule fixing block 300, and the compensating member installation groove 310 is used to detachably install the compensating member 400. Specifically, the outer shell 100 as a whole may be roughly cylindrical, and the capsule fixing block 300 is located inside the outer shell 100 and may be cylindrical. The compensating member installation groove 310 may be a rectangular parallelepiped slot opened on the cylindrical structure, or a cylindrical slot, or a slot of any other shape. The shapes or sizes of the plurality of compensating member installation grooves 310 may be the same or different. The shape of the compensating member 400 may be adapted to the shape of the compensating member installation groove 310. The number of compensating member installation grooves 310 may be set according to the use requirements, and may be set to two as in the illustrated embodiment, or may be set to more or less. There may be multiple compensating members 400, and the density of at least two of the plurality of compensating members 400 may be different. That is, at least two compensating members 400 of different densities are included. Exemplarily, the capsule fixing block 300 may be made of aluminum alloy. The compensating member 400 may be made of molybdenum alloy, aluminum alloy or any other type of metal. Exemplarily, the irradiation test device 10 may further include a support tube 510 connected to one side of the outer shell 100, the support tube 510 is connected to the mounting flange 520, the support tube 510 is used to support and connect the outer shell 100, and the connection and fixation of the irradiation test device 10 with other structural parts can be achieved through the mounting flange 520. Exemplarily, one end of the outer shell 100 may be connected to a first connecting tube 550, and the first connecting tube 550 is connected to the support tube 510 through a second connecting tube 560.

[0036] During the test, the outer shell 100, the capsule fixing block 300 and the sample capsule assembly 200 located in the outer shell 100 can be installed together in the reactor to be irradiated. Under irradiation conditions, the material itself will generate heat, that is, the capsule fixing block 300 will self-heat. Generally, the test temperature of the sample capsule assembly 200 needs to be controlled within a predetermined range, and the self-heating of the capsule fixing block 300 may cause the temperature of the sample capsule assembly 200 to exceed the predetermined range.

[0037] Materials with different densities generate different amounts of heat under the same irradiation conditions. By installing compensating parts 400 of different densities into the compensating part installation groove 310, the change in the amount of heat generated by the self-heating can be achieved. It can be understood that the compensating part installation groove 310 is divided into the following three cases according to the different compensating parts 400 installed inside it. Case 1: The density of the compensating part 400 is less than the density of the capsule fixing block 300. This may be that the compensating part 400 uses a material with a smaller density than the capsule fixing block 300, or that no compensating part 400 is installed in the compensating part installation groove 310. Case 2: The density of the compensating part 400 is equal to the density of the capsule fixing block 300. Case 3: The density of the compensating part 400 is greater than the density of the capsule fixing block 300. The self-heating in the three cases of case 1, case 2 and case 3 increases in sequence. In other words, the test temperature of the sample capsule assembly 200 can be regulated by the difference in the inserted compensating parts 400, that is, the test temperature of the sample 90 can be regulated. When the test temperature required for sample 90 is relatively low, remove the compensating part 400 or install a compensating part 400 made of a material having a density less than that of the capsule fixing block 300; when the test temperature required for sample 90 is relatively high, install a compensating part 400 made of a material having a density greater than or equal to that of the capsule fixing block 300.

[0038] The irradiation test device 10 provided in the present application realizes the regulation of the ambient temperature of the sample 90 by installing the compensating parts 400 of different densities in the compensating part installation groove 310. That is, the same irradiation test device 10 can meet the requirements of different ambient temperatures, and the disassembly and assembly process of the compensating part 400 is simple, which can effectively simplify the test process and reduce the cost.

[0039] For example, in conjunction with reference Figure 3 and Figure 4, the capsule fixing block 300 and the outer shell 100 can be spaced apart to form a first insulation cavity 102. The first insulation cavity 102 can be filled with an inert gas. The first insulation cavity 102 can be annular and surround the outer periphery of the capsule fixing block 300. The setting of the first insulation cavity 102 can better avoid the heat dissipation of the capsule fixing block 300 and other structural parts inside the capsule fixing block 300. In the radial direction of the irradiation test device 10, the temperature on the inner side of the first insulation cavity 102 is higher, and the temperature on the outer side of the first insulation cavity 102 is lower, forming a temperature gradient to meet the high temperature irradiation of the sample 90 in a low temperature environment. Specifically, the outer periphery of the capsule fixing block 300 can be provided with a second limiting rib 330, and the second limiting rib 330 is against the inner wall of the outer shell 100 to limit the position of the capsule fixing block 300 and to provide a gap between the capsule fixing block 300 and the outer shell 100. Further, the second limiting rib 330 may extend along the axial direction of the capsule fixing block 300. There may be a plurality of second limiting ribs 330, and the plurality of second limiting ribs 330 may be arranged along the circumferential direction of the capsule fixing block 300. Alternatively, in other embodiments, any other structure may be provided between the capsule fixing block and the outer shell so that there is a gap between the capsule fixing block and the outer shell. In an embodiment not shown, the outer wall of the capsule fixing block may be arranged to fit the outer shell.

[0040] For example, in conjunction with reference Figure 3 , Figure 4 , Figure 6 and Fig. 9, a capsule mounting groove 320 separated from the compensation piece mounting groove 310 may be provided on the capsule fixing block 300, and the sample capsule assembly 200 may be installed in the capsule mounting groove 320, and the gap between the sample capsule assembly 200 and the groove wall of the capsule mounting groove 320 forms a second insulation cavity 103. The interior of the second insulation cavity 103 may be filled with an inert gas. The second insulation cavity 103 may be annular and surround the outer periphery of the sample capsule assembly 200. The provision of the second insulation cavity 103 may better prevent heat dissipation of the sample capsule assembly 200. In the radial direction of the irradiation test device 10, the temperature on the inner side of the second insulation cavity 103 is higher, and the temperature on the outer side of the second insulation cavity 103 is lower, forming a temperature gradient, which satisfies the high-temperature irradiation of the sample 90 in a low-temperature environment. Specifically, the periphery of the sample capsule assembly 200 may be provided with a first limiting rib 240, and the first limiting rib 240 abuts against the inner wall of the outer shell 100 to limit the position of the sample capsule assembly 200 and to provide a gap between the sample capsule assembly 200 and the bottom of the capsule mounting groove 320. Further, the first limiting rib 240 may extend along the axial direction of the sample capsule assembly 200. There may be a plurality of first limiting ribs 240, and the plurality of first limiting ribs 240 may be arranged along the circumferential direction of the sample capsule assembly 200. Alternatively, in other embodiments, any other structure may be provided between the sample capsule assembly and the capsule mounting groove to provide a gap between the sample capsule assembly and the bottom of the capsule mounting groove. In an embodiment not shown, the outer wall of the sample capsule assembly may be provided in contact with the bottom of the capsule mounting groove.

[0041] For example, in conjunction with reference Figure 1 , Figure 2 and Figure 3The outer shell 100 may include an irradiation tube 110 and a first end cap 171 and a second end cap 172 respectively located at opposite ends of the irradiation tube 110. The first end cap 171, the irradiation tube 110 and the second end cap 172 may be enclosed together to form an irradiation test chamber 101. The first insulation chamber 102 and the second insulation chamber 103 may be both located in the irradiation test chamber 101 and both may be connected to the irradiation test chamber 101. The irradiation test device 10 may also include an air inlet pipe 140 and an air outlet pipe 130. One end of the air inlet pipe 140 may be connected to the irradiation test chamber 101 and the other end may be connected to an external air source. One end of the air outlet pipe 130 may be connected to the irradiation test chamber 101 and the other end may be connected to external air. In this way, the external air source may introduce gas (such as inert gas) into the irradiation test chamber 101, thereby filling the first insulation chamber 102 and the second insulation chamber 103 with the gas. Moreover, the gas can be discharged to the outside through the gas outlet pipe 130. With such a configuration, the irradiation test chamber 101 and the first insulation chamber 102 and the second insulation chamber 103 therein can be better filled with a specified type of gas. Different types of gases have different thermal insulation capabilities, that is, such a configuration can adjust the thermal insulation capabilities of the first insulation chamber 102 and the second insulation chamber 103 through the type of external gas connected to the air inlet pipe 140, that is, further realize the regulation of the test temperature of the sample 90. Exemplarily, the irradiation test device 10 may include an air inlet connector 530 located at one end of the mounting flange 520 facing away from the sample capsule assembly 200, and the air inlet pipe 140 passes through the mounting flange 520 and is connected to the air inlet connector 530.

[0042] For example, continue to combine with reference Figure 2 and Figure 3 There are at least two air inlet pipes 140, and different air inlet pipes 140 may be connected to different types of external gas sources. In the embodiment where there are two air inlet pipes 140, one air inlet pipe 140 may be connected to helium, and the other air inlet pipe 140 may be connected to argon. In this way, by filling the irradiation test chamber 101 with mixed gases of different proportions, the thermal insulation coefficients of the first thermal insulation chamber 102 and the second thermal insulation chamber 103 are changed, that is, the thermal insulation capacity of the first thermal insulation chamber 102 and the second thermal insulation chamber 103 is regulated. In this way, the test temperature of the sample 90 can be more accurately regulated.

[0043] For example, in conjunction with reference Figure 2 , Figure 3 and Figure 7The sample capsule assembly 200 may include a capsule shell 210 and a sample fixture 220 for mounting the sample 90. The sample fixture 220 may be located inside the capsule shell 210. The sample fixture 220 and the capsule shell 210 may be spaced apart to form a third insulation chamber 202. The third insulation chamber 202 may be filled with an inert gas. The third insulation chamber 202 may be annular and surround the periphery of the sample fixture 220. The arrangement of the third fixture may better prevent the heat of the sample fixture 220 and the sample 90 from escaping. In the radial direction of the irradiation test device, the temperature inside the third insulation chamber 202 is higher, and the temperature outside the third insulation chamber 202 is lower, forming a temperature gradient to meet the high temperature irradiation of the sample 90 in a low temperature environment. Exemplarily, the sample fixture 220 may have two opposite ends, one end of which is inserted into the first limiting end cover 2310 and the other end is inserted into the second limiting end cover 2320. At least one of the first limiting end cover 2310 and the second limiting end cover 2320 may be provided with a third limiting rib 250, and the third limiting rib 250 abuts against the capsule shell 210. That is, the third limiting rib 250 limits the sample fixture 220 and separates the sample fixture 220 from the capsule shell 210, and the interval forms the third insulation cavity 202. Further, the third limiting rib 250 may extend along the axial direction of the sample fixture 220. There may be a plurality of third limiting ribs 250, and a plurality of third limiting ribs may be arranged along the circumferential direction of the sample fixture 220. Alternatively, in other embodiments, any other structure may be provided between the sample fixture and the capsule shell so that there is an interval between the sample fixture and the capsule shell. The sample fixture may be made of molybdenum metal or stainless steel metal. The capsule end cover may be made of molybdenum metal. In an embodiment not shown, the outer wall of the sample fixture may be arranged to fit the capsule shell.

[0044] It is understood that in the embodiment with the first insulation cavity 102, the second insulation cavity 103 and the third insulation cavity 202, the third insulation cavity 202, the second insulation cavity 103 and the first insulation cavity 102 are surrounded and arranged in sequence from the inside to the outside. Four regions are formed in the radial direction of the irradiation test device 10 to form a large temperature gradient, which satisfies the high temperature irradiation in a low temperature environment. The thickness of the third insulation cavity 202 can be 0.2-0.5 mm, the thickness of the second insulation cavity 103 can be 0.12-0.2 mm, and the thickness of the first insulation cavity 102 can be 0.15-0.21 mm. It is understood that the different thickness settings of each insulation cavity can affect the test temperature of the irradiation test device 10, and different thickness settings can achieve regulation within the range of 200°C to 900°C. Exemplarily, argon can be filled in the third insulation cavity 202. A mixed gas of argon and helium can be filled in the first insulation cavity 102 and the second insulation cavity 103.

[0045] Exemplarily, the sample fixing members 220 may be at least two and arranged in a matched manner, and a sample containing space 201 is formed between the matched sample fixing members 220, and the sample 90 is installed in the sample containing space 201. The sample capsule assembly 200 may also include a connecting pipe 260 connected to the sample containing space 201, and the connecting pipe 260 may be connected to external measurement and control.

[0046] Exemplarily, the capsule shell 210 may include a protective shell 2110, a capsule top cover 2120 and a capsule bottom cover 2130. The capsule top cover 2120 and the capsule bottom cover 2130 are respectively connected to opposite ends of the protective shell 2110. Further, the capsule top cover 2120 and the capsule bottom cover 2130 may be welded to the protective shell 2110. The protective shell 2110, the capsule top cover 2120 and the capsule bottom cover 2130 may enclose a sealed chamber, and the sample containing space 201 is located in the chamber and communicated with it, and the chamber is communicated with an external pressure detection system through a capsule air pipe arranged on the capsule top cover 2120.

[0047] For example, in conjunction with reference Figure 3 and Figure 4 , the irradiation test device 10 may further include a heating element 150, a part of which may extend into the capsule fixing block 300 and may be separated from the compensation element installation slot 310. In this way, the heating element 150 may control the test temperature of the sample 90 by heating and heating the capsule fixing block 300, thereby achieving thermal compensation. Exemplarily, the heating element 150 may be an electric heating rod. The heating element 150 may be set to different powers according to the test requirements, and further, the number of the heating elements 150 may be one or more. Specifically, a heating element 150 installation slot may be provided on the capsule fixing block 300, one end of the heating element 150 extends into the heating element 150 installation slot and the other end passes through the outer shell 100 to be electrically connected to the external measurement and control system. In the embodiment where the capsule installation slot 320 is multiple, a heating element 150 may be provided in the portion between each two adjacent capsule installation slots 320 corresponding to the capsule fixing block 300. The power of the heating element 150 may be 0.5 to 2KW. It is understandable that by adjusting the power of different heating elements 150 , different samples 90 can be placed in different ambient temperatures within the same irradiation test device 10 .

[0048] Exemplarily, a capsule mounting groove 320 may be provided in the capsule fixing block 300, and the capsule mounting groove 320 may be multiple and spaced apart from each other. There may be at least two compensating member mounting grooves 310, and each compensating member mounting groove 310 may be located between two adjacent capsule mounting grooves 320. In this way, multiple compensating member mounting grooves 310 may provide more options for the installed compensation block and achieve more flexible regulation. The arrangement of the compensating member mounting groove 310 located between two adjacent capsule mounting grooves 320 makes the overall temperature of the capsule fixing block 300 more balanced, and can better ensure the uniformity of the test temperature of multiple sample capsule assemblies 200. Exemplarily, three capsule mounting grooves 320 may be provided in the capsule fixing block 300, and the three capsule mounting grooves 320 are evenly arranged along the axial direction of the capsule fixing block 300. A sample capsule assembly 200 may be installed in each capsule mounting groove 320, and each sample capsule assembly 200 is correspondingly connected to a connecting pipe 260. In an embodiment not shown, there may be one compensating member mounting groove.

[0049] For example, in conjunction with reference Figure 3 and Figure 4 , the irradiation test device 10 may also include a capsule thermocouple 160, the detection end of the capsule thermocouple 160 may extend into the capsule fixing block 300, and the connection end of the capsule thermocouple 160 may pass through the outer shell 100 to be electrically connected to the external measurement and control system. The capsule thermocouple 160 may be used to monitor the temperature of the capsule fixing member, and obtain the temperature of the capsule fixing member in a more real-time manner. When the temperature measured by the capsule thermocouple 160 is high, the heating power of the electric heating member 150 is controlled to be reduced or the thermal insulation coefficient of the gas in the first insulation cavity 102 and the second insulation cavity 103 is adjusted to cool the entire device, so as to prevent the temperature of the capsule fixing member from exceeding the melting point of the material. The setting of the capsule thermocouple 160 may more accurately know the temperature condition of the sample capsule assembly 200, and is more conducive to the temperature control in the subsequent test operation. In the embodiment where there are multiple capsule mounting slots 320, the number of capsule thermocouples 160 may be multiple, and a capsule thermocouple 160 may be correspondingly arranged between each two adjacent capsule mounting slots 320. This makes it easier to monitor the temperature outside each sample capsule assembly 200. Taking the embodiment shown in the figure as an example, there are three sample capsule assemblies 200 and three capsule thermocouples 160. In the embodiment where the air outlet pipe 130 is provided, the capsule thermocouple 160 can be guided to the outside through the air outlet pipe 130 to be electrically connected to the external measurement and control system. Exemplarily, a thermocouple seal 540 can be connected to the mounting flange 520, and the capsule thermocouple 160 is electrically connected to the measurement and control system through the mounting flange 520 and the thermocouple seal 540.

[0050] For example, in conjunction with reference Figure 4 , Figure 5 , Figure 8 and Fig.10 , the irradiation test device 10 may also include a sample thermocouple, the detection end of the sample thermocouple may extend into the sample fixture 220, and the connection end may pass through the capsule shell 210 and the outer shell 100 to be electrically connected to the external measurement and control system. Further, there may be two sample thermocouples and they are respectively located on opposite sides of the sample 90. The sample thermocouple can more directly measure the ambient temperature of the sample 90. A guide tube 2140 may be provided on the capsule shell 210, and the connection end of the capsule thermocouple 160 is electrically connected to the external measurement and control system through the guide tube 2140, and a thermocouple seal 540 may be provided inside the guide tube 2140. In an embodiment in which an air outlet pipe 130 is provided, the sample thermocouple guided out from the guide tube 2140 may be guided to the outside through the air outlet pipe 130 to be electrically connected to the external measurement and control system. Exemplarily, a thermocouple seal 540 may be connected to the mounting flange 520, and the sample thermocouple is electrically connected to the measurement and control system through the thermocouple seal 540. The sealing design pressure at the thermocouple seal 540 may be 0.4 MPa. In the embodiment provided with the heater 150 , the wire connected to the heater 150 may pass through the outlet pipe 130 , through the thermocouple seal 540 , and be electrically connected to the measurement and control system.

[0051] Exemplarily, an elastic component 180 is further provided in the outer shell 100, and the elastic component 180 is installed between the second end cover 172 and the sample capsule component 200. The elastic component 180 can ensure the stability of the position of the sample capsule component 200 in the outer shell 100. Further, the elastic component 180 can include a spring. Exemplarily, a support block 120 can also be provided on one side of the sample capsule component 200 to support the sample capsule component 200 and maintain the stability of the position of the sample capsule component 200 in the irradiation test device 10.

[0052] Exemplarily, the capsule fixing member may also be provided with a neutron detection box 610 and a support rod 620 for supporting the neutron detection box 610. There may be two neutron detection boxes 610, which are respectively located at two ends of the capsule fixing block 300, and the support rod 620 is located between the two neutron detection boxes 610 and fixed against the two neutron detection boxes 610.

[0053] According to another aspect of the present invention, an irradiation test system is also provided. The irradiation test system may include any one of the irradiation test devices 10 described above. Since the irradiation test device 10 adopts the technical solution of any of the above embodiments, the irradiation test system at least has the beneficial effects brought about by the technical solution of the above embodiments, which will not be described one by one here. Exemplarily, the irradiation test system may also include a measurement and control system, an external gas source (such as argon, helium, etc.), a pressure detection system, and the like. The pressure detection system is connected to the sample accommodating space 201, and detects the amount of gas released by the sample 90 under irradiation conditions by detecting the pressure of the sample accommodating space 201.

[0054] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by directional words such as "front", "back", "up", "down", "left", "right", "lateral", "vertical", "vertical", "horizontal", "top", "bottom", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention; the directional words "inside" and "outside" refer to the inside and outside relative to the contour of each component itself.

[0055] For ease of description, regional relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the regional positional relationship between one or more components or features shown in the figure and other components or features. It should be understood that regional relative terms include not only the orientation of the components as described in the figure, but also different orientations in use or operation. For example, if the components in the accompanying drawings are inverted as a whole, the components "above other components or features" or "above other components or features" will include the situation where the components are "below other components or structures" or "below other components or structures". Therefore, the exemplary term "above" may include both "above" and "below". In addition, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this article is intended to include all of these situations.

[0056] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, parts, components and / or combinations thereof.

[0057] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0058] The present invention has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention. The protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An irradiation test device, characterized in that: It comprises an outer shell and a capsule fixing block arranged in the outer shell, wherein the capsule fixing block is used to install a sample capsule assembly, wherein the capsule fixing block is also provided with at least one compensation part installation groove, wherein the compensation part installation groove is used to detachably install a compensation part, and the compensation parts are multiple and at least two of the multiple compensation parts have different densities.

2. The irradiation test device according to claim 1, characterized in that: The capsule fixing block and the outer shell are spaced apart to form a first heat-insulating cavity.

3. The irradiation test device according to claim 2, characterized in that: The capsule fixing block is provided with a capsule mounting groove spaced apart from the compensating member mounting groove, the sample capsule assembly is mounted in the capsule mounting groove, and the gap between the sample capsule assembly and the groove wall of the capsule mounting groove forms a second heat-insulating cavity.

4. The irradiation test device according to claim 3, characterized in that: The outer shell includes an irradiation tube and a first end cap and a second end cap respectively located at opposite ends of the irradiation tube, the first end cap, the irradiation tube and the second end cap together enclose an irradiation test chamber, the first heat insulation chamber and the second heat insulation chamber are both located in the irradiation test chamber and are both connected to the irradiation test chamber, The irradiation test device also includes an air inlet pipe and an air outlet pipe, one end of the air inlet pipe is connected to the irradiation test chamber and the other end is connected to an external air source, and one end of the air outlet pipe is connected to the irradiation test chamber and the other end is connected to external air.

5. The irradiation test device according to claim 4, characterized in that: There are at least two air inlet pipes, and different air inlet pipes are connected to different types of external air sources.

6. The irradiation test device according to claim 1, characterized in that: The sample capsule assembly comprises a capsule shell and a sample fixing part for mounting a sample, wherein the sample fixing part is located inside the capsule shell, and the sample fixing part and the capsule shell are spaced apart to form a third heat-insulating cavity.

7. The irradiation test device according to claim 1, characterized in that: The irradiation test device further comprises a heating element, a part of the structure of which extends into the capsule fixing block and is separated from the compensating element installation groove.

8. The irradiation test device according to claim 1, characterized in that: The capsule fixing block is provided with a capsule installation groove, the capsule installation grooves are multiple and are spaced apart from each other, the compensation member installation grooves are at least two, and each of the compensation member installation grooves is located between two adjacent capsule installation grooves.

9. The irradiation test device according to claim 1, characterized in that: The irradiation test device also includes a capsule thermocouple, a detection end of the capsule thermocouple extends into the capsule fixing block, and a connection end of the capsule thermocouple passes through the outer shell and is electrically connected to an external measurement and control system.

10. An irradiation test system, characterized in that: The invention comprises the irradiation test device as claimed in any one of claims 1 to 9.

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