Multi-temperature-zone variable-atmosphere material compatibility experimental device and experimental method

Abstract

The invention relates to the technical field of fusion reactor nuclear materials, in particular to a multi-temperature-zone variable-atmosphere material compatibility experimental device and experimental method.The multi-temperature-zone variable-atmosphere material compatibility experimental device comprises an experimental cavity used for containing a to-be-tested material sample, a multi-temperature-zone heating control unit is connected with the experimental cavity, and an atmosphere control unit is communicated with the air inlet end of the experimental cavity; the tail gas emission purification unit is communicated with the gas outlet end of the experiment cavity; through the designed multi-temperature-zone heating control unit and the experiment cavity, a compatibility experiment of multiple temperature points in a single experiment is achieved, accurate temperature control of different temperature zones is achieved through the heat preservation and insulation plug and independent heating control of each temperature zone, the control precision is improved, the experiment efficiency is remarkably improved, and the experiment cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of nuclear materials technology for fusion reactors, specifically to an experimental apparatus and method for material compatibility testing in multiple temperature zones and varying atmospheres. Background Technology

[0002] Fusion reactors, primarily based on deuterium-tritium (DT) fusion reactions, rely on deuterium (D) and tritium (T) as their main fuels. Deuterium is abundant in nature, while tritium is almost nonexistent. Therefore, the fusion reactor must produce tritium itself to achieve "tritium self-sufficiency" and sustain long-term operation. The key internal component for tritium production in a fusion reactor is the tritium-producing blanket. Within the tritium-producing blanket, tritium is primarily produced through the reaction of neutrons with lithium atoms. The reaction produces tritium, using lithium-containing materials as tritium breeders, which exist in both liquid and solid states. Currently, solid tritium breeders are mainly lithium-containing binary and ternary ceramics, such as... , , , , etc., and multiphase ceramics Materials such as beryllium and beryllium-titanium alloys are mainly used in the form of spherical ceramic particles. In addition, in order to improve the tritium production performance, a large amount of neutron multipliers such as beryllium and beryllium-titanium alloys need to be added inside the solid-state cladding. These are mainly used in the form of spherical metal particles, which multiply neutrons to achieve efficient tritium production in the cladding.

[0003] The operating conditions inside a solid-state tritium-producing blanket are extremely complex. Tritium breeders, neutron multipliers, and structural materials are subjected to complex environments including neutron irradiation, high temperatures, high temperature gradients, and tritium-generating gas purging. In this context, the compatibility between materials is crucial to their service performance and lifespan. Therefore, conducting compatibility tests between tritium breeders and structural materials under different temperatures, durations, and atmospheres, and assessing the compatibility of different materials under various conditions, is essential for the research, development, and service deployment of solid-state tritium-producing blankets in fusion reactors. Both tritium breeders and neutron multipliers utilize spherical or near-spherical particles, which are deposited inside the tritium-producing blanket. Their contact with the structural materials is point-to-point. Under long-term service conditions, interfacial corrosion can occur at these contact points, and stress concentration at these points can lead to particle breakage. Currently, to support the design of tritium coatings, research and development has mainly focused on the conventional properties of materials. However, there is a lack of experimental equipment and data related to compatibility testing between particulate materials and structural materials. Moreover, existing experimental equipment is inefficient, and it is difficult to maintain a constant atmosphere between multiple tests. Furthermore, compatibility tests under varying atmospheres have not been conducted, making it difficult to meet the requirements of actual working conditions. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a multi-temperature zone variable atmosphere material compatibility experimental device and method, which enables not only simultaneous material compatibility tests at different temperatures under the same atmosphere, but also precise control of different static and dynamic experimental atmospheres, greatly improving experimental efficiency.

[0005] This invention is achieved through the following technical solution: A multi-temperature zone variable atmosphere material compatibility testing apparatus includes: The experimental chamber is used to hold the material sample to be tested. A multi-temperature zone heating control unit, which is connected to the experimental chamber, is used to form multiple independently controllable temperature zones along the experimental chamber; An atmosphere control unit, which is connected to the air inlet of the experimental chamber, is used to supply one or more components of gas into the experimental chamber. The exhaust gas purification unit is connected to the gas outlet of the experimental chamber and is used to evacuate the experimental chamber and process the discharged gas.

[0006] Optionally, the experimental chamber includes a high-temperature furnace tube, and multiple heat-insulating plugs are spaced apart inside the high-temperature furnace tube; The plurality of heat-insulating plugs divide the interior of the high-temperature furnace tube into a plurality of experimental zones corresponding to the temperature zones, and the heat-insulating plugs are provided with through holes that connect the two sides.

[0007] Optionally, each of the multiple experimental zones is provided with an experimental container, and the experimental container is equipped with granular samples and sheet-like samples layered inside.

[0008] Optionally, within the experimental container, the spacing between two adjacent sheet-like samples is greater than the particle diameter of a single particle sample, but less than 1.5 times the particle diameter.

[0009] Optionally, the atmosphere control unit includes: Multiple gas sources; Multiple air source valves are respectively connected to the air outlets of multiple air sources; The gas distribution chamber has its air inlet connected to the air outlet of the plurality of gas source valves; A gas flow controller, which is connected to the gas outlet of the gas distribution chamber; An inlet valve is connected between the outlet end of the gas flow controller and the inlet end of the experimental chamber.

[0010] Optionally, the multi-temperature zone heating control unit includes a high-temperature furnace, a high-temperature furnace controller, and a resistance heating wire, wherein the high-temperature furnace and the resistance heating wire are electrically connected to the high-temperature furnace controller; The experimental chamber is set inside the heat insulation material in the high-temperature furnace, and multiple independently controllable resistance heating wires are respectively set corresponding to the experimental area; The high-temperature furnace is equipped with a furnace temperature thermocouple for measuring the furnace temperature; each experimental zone is equipped with a sample temperature thermocouple for measuring the actual temperature of the sample.

[0011] Furthermore, the experimental apparatus also includes a data acquisition and control unit, which comprises: A control module, which is connected to the gas distribution chamber, the gas flow controller and the high-temperature furnace controller, is used to control the experimental atmosphere and heating temperature; The data acquisition module is used to acquire pressure data from the pressure gauge in the atmosphere control unit, as well as temperature data from the furnace temperature thermocouple and the sample temperature measuring thermocouple.

[0012] Optionally, the exhaust gas purification unit includes: An air outlet valve assembly is connected to the air outlet end of the experimental chamber; A vacuum pump, which is connected to one of the outlet valves in the outlet valve group, and is used to evacuate the experimental chamber; The exhaust gas treatment device is connected to another exhaust valve in the exhaust valve group and is used to purify the gas discharged from the experimental chamber.

[0013] Optionally, the inlet valve is sealed to the high-temperature furnace tube via a first sealing flange, and the outlet valve assembly is sealed to the high-temperature furnace tube via a second sealing flange.

[0014] A method for testing the compatibility of materials in multiple temperature zones with varying atmospheres includes the following steps: Sample loading: Install the experimental containers containing particulate and sheet samples into the experimental chamber; Atmosphere replacement: The experimental chamber is evacuated, and then a preset experimental gas is introduced to establish the experimental atmosphere; Multi-zone heating: Multiple temperature zones within the experimental chamber are independently heated by the multi-zone heating control unit and maintained at their respective target temperatures. Atmosphere maintenance: During the heat preservation period, the experimental atmosphere is maintained as a static atmosphere or a dynamic purge atmosphere through the atmosphere control unit; Cooling and unloading: After the heat preservation is completed, the experimental chamber is cooled down and the material sample is removed.

[0015] Compared with the prior art, the present invention has the following advantages and beneficial effects: This invention enables compatibility testing at multiple temperature points in a single experiment through a multi-temperature zone heating control unit and experimental chamber. By using heat-insulating plugs and individual heating control for each temperature zone, precise temperature control of different zones is achieved, which improves control accuracy, significantly increases experimental efficiency, and reduces experimental costs.

[0016] This invention can achieve experiments under a single gas atmosphere or under two or more different types of mixed gas atmospheres through the atmosphere control unit; it can achieve compatibility tests under static atmosphere or dynamic purging atmosphere through the gas flow controller, and can ensure that the atmosphere environment in different temperature zones is completely consistent, achieving a single temperature variable, which can significantly improve the reliability of experimental results. Attached Figure Description

[0017] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the invention. These drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, but do not constitute a limitation on the embodiments of the present invention.

[0018] Figure 1 This is a schematic diagram of the structure of a multi-temperature zone variable atmosphere material compatibility test device according to the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the experimental container according to the present invention.

[0020] Figure 3 This is a schematic diagram of the surface morphology of the contact point of the particle sample after the compatibility test according to the present invention.

[0021] Figure 4 This is a schematic diagram of the surface morphology of the contact points of the sheet sample after the compatibility test according to the present invention.

[0022] Figure reference numerals: 1-Gas source, 2-Gas source valve, 3-Gas distribution chamber, 4-Gas flow controller, 5-Inlet valve, 6-Pressure gauge; 7-First sealing flange; 8-Insulation plug; 9-Experimental container; 10-Sample temperature measuring thermocouple; 11-High-temperature furnace tube; 12-High-temperature furnace; 13-High-temperature furnace controller; 14-Resistance heating wire; 15-Insulation material; 16-Furnace temperature thermocouple; 17-Indicator light; 18-Second sealing flange; 19-Outlet valve assembly; 20-Vacuum pump; 21-Tail gas treatment device; 22-Data acquisition and control unit; 23-Particulate sample; 24-Flake sample. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0024] It should also be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0025] Where there is no conflict, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Example 1 like Figure 1 and Figure 2 As shown, this embodiment aims to elaborate in detail an experimental apparatus for conducting material compatibility testing under multi-temperature zone variable atmosphere environments. The apparatus consists of four core systems working in tandem: an experimental chamber serving as the experimental site; a multi-temperature zone heating control unit for precise temperature regulation; an atmosphere control unit for establishing and maintaining a specific chemical environment; and a tail gas emission purification unit for processing gases within the chamber.

[0027] The basic functions and interrelationships of the above components are explained below: The experimental chamber provides a sealed and controlled physical space for the material sample to be tested.

[0028] The multi-temperature zone heating control unit is connected to the experimental chamber to create multiple independently controllable temperature zones along the chamber. It can establish multiple independent temperature zones with different temperatures at different locations or sections within the experimental chamber. Independent control means that parameters such as the target temperature, heating rate, and holding time for each temperature zone can be set and maintained individually, thus simulating the material's performance under various temperature conditions in a single experiment.

[0029] The atmosphere control unit is connected to the air inlet of the experimental chamber and is used to supply one or more components of gas into the experimental chamber; according to experimental requirements, it can deliver gas with specific chemical components into the sealed experimental chamber. The gas can be a pure gas of a single component, or a mixture of two or more gases in a specific ratio, used to simulate a specific chemical atmosphere environment.

[0030] The exhaust gas purification unit is connected to the outlet of the experimental chamber and is used to evacuate the experimental chamber and treat the discharged gas. It has two functions: First, it can evacuate the experimental chamber to completely remove air or other residual gases inside, creating conditions for the subsequent introduction of a high-purity experimental atmosphere. Second, it is responsible for treating the gas discharged from the chamber during or after the experiment, which may include purification, recovery, or safe discharge of the exhaust gas as needed.

[0031] First, the exhaust gas purification unit replaces the atmosphere in the experimental chamber containing the sample. Then, the atmosphere control unit establishes a preset chemical atmosphere. Subsequently, the multi-temperature zone heating control unit forms multiple independent temperature steps in the chamber, thereby creating a complex experimental environment that can simultaneously simulate multiple temperatures and specific atmospheres to achieve material compatibility testing.

[0032] Example 2 This embodiment provides a detailed description of the experimental chamber, which on the one hand achieves effective physical isolation and atmospheric communication between multiple experimental temperature zones, and on the other hand ensures that samples of different shapes can have sufficient and reliable contact.

[0033] The main body of the experimental chamber is a high-temperature furnace tube 11, and multiple heat insulation plugs 8 are arranged at intervals inside the high-temperature furnace tube 11. The heat insulation plug 8 is a cylindrical or disc-shaped component made of special high-temperature resistant heat insulation material. Its core function is to act as a heat barrier to physically divide the originally continuous inner cavity of the high-temperature furnace tube 11 into multiple independent experimental areas.

[0034] Multiple heat-insulating plugs 8 divide the interior of the high-temperature furnace tube 11 into multiple experimental zones corresponding to different temperature zones. The heat-insulating plugs 8 are equipped with through holes that connect their two sides, ensuring that the experimental zones remain connected in the gas flow path and that all experimental zones share the same identical chemical atmosphere. When conducting multi-point temperature tests, temperature becomes the only variable, thus eliminating the interference of atmospheric differences on the experimental results.

[0035] Secondly, in each of the above independent experimental areas, there is a special experimental container 9. The experimental container 9 is used to hold the final test sample. The sample contains two different forms of material: granular sample 23 (usually spherical or near-spherical ceramic / metal spheres) and sheet sample 24 (usually thin sheets or blocks representing structural materials).

[0036] Inside the experimental container 9, the distance between two adjacent sheet-like samples 24 is greater than the particle diameter of a single particle sample 23, but less than 1.5 times that particle diameter.

[0037] Particle sample 23 is a fusion reactor tritium breeder ceramic particle sample 23, with a particle diameter of 1 mm; exemplarily, , , Ceramic particles. The sheet-like samples are low-activation steel samples of fusion reactor blanket structure material, with a spacing of 1.5 mm between the 24 sheet-like samples.

[0038] In this embodiment, by placing particulate samples 23 and sheet samples at intervals within the experimental container 9, and ensuring that the spatial distance between two sheet samples is greater than the diameter of a single particle but less than 1.5 times the diameter of a particle, it is possible to ensure that each particulate sample 23 is in contact with the sheet sample during the experiment, and that there is at least one contact point. This ensures that all particles participate in the compatibility experiment, guaranteeing the reliability and accuracy of the experimental results.

[0039] Example 3 This embodiment will describe in detail the specific structure and workflow of the atmosphere control unit in Embodiment 1. First, one or more gases are selected from multiple independent gas sources 1. Then, the selected gases are introduced into a dedicated chamber for uniform mixing. Next, the flow rate of the mixed gas is precisely adjusted. Finally, it is sent into the experimental chamber through a main valve.

[0040] The atmosphere control unit includes: Multiple gas sources 1 can be connected to various different gas cylinders or gas generating devices simultaneously. In this embodiment, they can be conventional industrial gases such as air, nitrogen, oxygen, helium, and hydrogen, or they can be deuterium, tritium, or even water vapor used for special nuclear material experiments. Furthermore, it is permissible to use any one of these gases as a single atmosphere, or to combine two or more of them to form a mixed gas with a specific ratio to simulate extremely diverse chemical environments.

[0041] To enable selective use of multiple gas sources 1, the system is equipped with an independent gas source valve 2 for the outlet of each gas source 1. Multiple gas source valves 2 are connected to the outlets of multiple gas sources 1 respectively. Operators can precisely control which one or more gases are allowed to enter the subsequent pipeline system by opening or closing specific valves.

[0042] The gas flowing out from each gas source valve 2 will converge and enter a gas distribution chamber 3. That is, the gas inlet of the gas distribution chamber 3 is connected to the gas outlet of multiple gas source valves 2, so that the gas from different gas sources 1 can be fully diffused and mixed here, thereby forming a uniform and stable mixed gas.

[0043] The gas flow controller 4 is connected to the outlet of the gas distribution chamber 3. By setting the gas flow controller 4, the amount of gas entering the experimental chamber per unit time can be controlled, so that the experiment can be carried out in either the "static atmosphere" mode where the airflow is turned off after the gas is filled or the "dynamic atmosphere" mode where a constant airflow is maintained throughout the experiment.

[0044] The inlet valve 5 is connected between the outlet end of the gas flow controller 4 and the inlet end of the experimental chamber.

[0045] Example 4 This embodiment will describe in detail the specific structure of the multi-temperature zone heating control unit in Embodiment 1 and its cooperative working method with the experimental chamber.

[0046] The multi-temperature zone heating control unit includes a high-temperature furnace 12, a high-temperature furnace controller 13, and a resistance heating wire 14. The high-temperature furnace 12 and the resistance heating wire 14 are electrically connected to the high-temperature furnace controller 13.

[0047] The high-temperature furnace 12 is a box structure that provides an overall high-temperature environment. Its interior is filled with thermal insulation material 15. The experimental chamber (such as the high-temperature furnace tube 11 in Example 2) is placed in these thermal insulation materials 15 to ensure that it is heated evenly and to reduce heat loss.

[0048] Multiple independently controllable resistance heating wires 14 are respectively set up corresponding to the experimental area. The resistance heating wires 14 are the core components that actually generate heat. The physical layout of the independently controllable resistance heating wires 14 corresponds to the various experimental areas divided in Embodiment 2. That is, each experimental area has its own exclusive heating source with a temperature range of 200~1200℃, specifically 500℃, 550℃, and 600℃.

[0049] The high-temperature furnace controller 13 receives commands through electrical connection and outputs power to each resistance heating wire 14, enabling it to deliver different electrical power to the heating wires in different areas.

[0050] Secondly, in order to achieve precise control, a dual temperature monitoring system was adopted, which includes two thermocouples with different positions.

[0051] The high-temperature furnace 12 is equipped with a furnace temperature thermocouple 16 for measuring the temperature of the high-temperature furnace 12, which is mainly used to measure the macroscopic ambient temperature inside the furnace.

[0052] Each experimental zone is equipped with a sample temperature measuring thermocouple 10 for measuring the actual temperature of the sample. The measuring end of the sample temperature measuring thermocouple 10 extends directly into the experimental zone, as close as possible to or in contact with the sample, in order to measure the actual temperature experienced by the sample.

[0053] The device is also equipped with indicator lights 17 to visually display the current working status of the heating system, such as "heating", "keeping warm" or "standby".

[0054] Example 5 To achieve automated execution of the experimental process and comprehensive recording of key data, the experimental setup also includes a data acquisition and control unit 22, which is a two-way information interaction platform. Firstly, it sends commands externally through the control module to control various functions of the setup. Secondly, it receives real-time information from various sensors internally through the data acquisition module, collecting key parameters during the experiment.

[0055] The control module is connected to the gas distribution chamber 3, the gas flow controller 4 and the high-temperature furnace controller 13, and is used to control the experimental atmosphere and heating temperature. The data acquisition module is used to collect pressure data from pressure gauge 6 in the atmosphere control unit, as well as temperature data from furnace temperature thermocouple 16 and sample temperature measuring thermocouple 10.

[0056] The configured control module and data acquisition module enable automated control and operation of the entire experimental device, allowing for automatic data collection, storage, and processing, thus reducing interference from human factors.

[0057] Example 6 This embodiment will describe in detail the specific structure of the exhaust gas purification unit. The outlet valve group 19 provides two different outlets for the gas in the cavity: one leads to the vacuum pump 20 for evacuation, and the other leads to the treatment device for discharge.

[0058] The exhaust emission purification unit includes: The air outlet valve assembly 19 is connected to the air outlet end of the experimental chamber; The vacuum pump 20 is connected to one of the outlet valves in the outlet valve group 19 and is used to evacuate the experimental chamber. Before the experiment officially begins, the operator will select this path through the valve group and use the vacuum pump 20 to completely remove the air or residual gas from the previous experiment from the experimental chamber.

[0059] The exhaust gas treatment device 21 is connected to another exhaust valve in the exhaust valve group 19 and is used to purify the gas discharged from the experimental chamber to prevent toxic and harmful gases from being emitted into the air.

[0060] In order to maintain a high vacuum or high purity atmosphere in the cavity, all connections to the high-temperature furnace tube 11 must be highly sealed. The inlet valve 5 is sealed to the high-temperature furnace tube 11 through the first sealing flange 7, and the outlet valve group 19 is sealed to the high-temperature furnace tube 11 through the second sealing flange 18.

[0061] Example 7 This embodiment illustrates a specific application method for performing material compatibility testing under multi-temperature zone variable atmosphere conditions using the experimental apparatus disclosed in the foregoing embodiments, including the following steps: S1. Sample loading: Install the experimental container 9 containing the particulate sample 23 and the sheet sample 24 into the experimental chamber.

[0062] It includes two steps: assembling the sample itself and installing the sample into the experimental chamber.

[0063] First, insert the low-activation steel (RAFM) sheet samples into the experimental container one by one, then add the tritium breeding agent. or The particulate sample was filled into the gaps between the low-activation steel.

[0064] Open the first sealing flange 7, and sequentially place multiple heat-insulating plugs 8 and experimental containers 9 into the high-temperature furnace tube 11, and then install the first sealing flange 7.

[0065] S2. Atmosphere replacement: The experimental chamber is evacuated, and then a preset experimental gas is introduced to establish the experimental atmosphere.

[0066] First, turn on vacuum pump 20 to evacuate the entire system. Then, close the valve and introduce the experimental atmosphere into the high-temperature furnace tube 11 through the atmosphere control unit. Then, close the inlet valve 5, evacuate the system again, and then introduce the experimental atmosphere again. Repeat this cycle 3 times to ensure that all the air has been replaced with the experimental gas.

[0067] S3. Multi-temperature zone heating: Through the multi-temperature zone heating control unit, multiple temperature zones in the experimental chamber are independently heated and kept at their respective target temperatures.

[0068] Set the target temperature, heating rate, and holding time for each temperature zone, and then heat until the target temperature is reached before entering the holding state: First, turn on the power to the high-temperature furnace 12, set the target temperature, heating rate, and holding time for each of the three temperature zones, and start heating. Once the target temperature is reached, enter the holding state.

[0069] S4. Atmosphere Maintenance: During the heat preservation period, the experimental atmosphere is maintained as a static atmosphere or a dynamic purging atmosphere through the atmosphere control unit.

[0070] If a dynamic atmosphere experiment is to be conducted, the dynamic airflow parameters are set through the control module to start dynamic airflow purging while maintaining the temperature continuously; if a static experiment is to be conducted, the temperature is maintained directly.

[0071] S5. Cooling and unloading: After the heat preservation is completed, the experimental chamber is cooled down and the material sample is removed.

[0072] After the set holding time is reached, heating is stopped, and the experimental sample is allowed to cool down naturally in the high-temperature furnace 12. Once the temperature drops to 50 degrees Celsius, the purge airflow is turned off.

[0073] Open the first sealing flange 7, remove the experimental particulate sample 23 and flake sample 24, and seal and store them. Figure 3 The image shows the morphology near the contact point of the lithium ceramic microspheres after a compatibility test with a steel sheet sample. Figure 4 The image shows the morphology near the contact point of the steel sheet sample after the compatibility test.

[0074] By changing the test samples and experimental parameters, steps S3 and S4 are repeated multiple times for repeated measurements. The measuring device in this embodiment solves the problems in fusion reactor material compatibility experiments, such as the single atmospheric environment, difficulty in precise control, low efficiency of single-temperature zone experiments, and limited experimental modes. It improves experimental efficiency, achieves precise temperature control in different temperature zones, improves control accuracy, and significantly increases experimental efficiency and reduces experimental costs. Furthermore, it can perform experiments under varying or multiple atmospheres, including both static and dynamic atmospheres, expanding the experimental modes and significantly improving the reliability of experimental results.

[0075] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0076] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0077] Those skilled in the art should understand that the above embodiments are merely for illustrating the present invention and are not intended to limit the scope of the invention. Those skilled in the art can make other changes or modifications based on the above invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A multi-temperature zone variable atmosphere material compatibility experimental device, characterized in that, include: The experimental chamber is used to hold the material sample to be tested. A multi-temperature zone heating control unit, which is connected to the experimental chamber, is used to form multiple independently controllable temperature zones along the experimental chamber; An atmosphere control unit, which is connected to the air inlet of the experimental chamber, is used to supply one or more components of gas into the experimental chamber. The exhaust gas purification unit is connected to the gas outlet of the experimental chamber and is used to evacuate the experimental chamber and process the discharged gas.

2. The multi-temperature zone variable atmosphere material compatibility experimental apparatus according to claim 1, characterized in that, The experimental chamber includes a high-temperature furnace tube (11), and multiple heat-insulating plugs (8) are spaced apart inside the high-temperature furnace tube (11). The plurality of heat-insulating plugs (8) divide the interior of the high-temperature furnace tube (11) into a plurality of experimental zones corresponding to the temperature zone, and the heat-insulating plugs (8) are provided with through holes that connect their two sides.

3. The multi-temperature zone variable atmosphere material compatibility experimental apparatus according to claim 2, characterized in that, Each of the experimental zones is equipped with an experimental container (9), and the experimental container (9) contains a layered arrangement of particulate samples (23) and sheet-like samples (24).

4. The multi-temperature zone variable atmosphere material compatibility experimental apparatus according to claim 3, characterized in that, Inside the experimental container (9), the distance between two adjacent sheet-like samples (24) is greater than the particle diameter of a single particle sample (23) and less than 1.5 times the particle diameter.

5. The multi-temperature zone variable atmosphere material compatibility experimental apparatus according to claim 2, characterized in that, The atmosphere control unit includes: Multiple gas sources (1); Multiple air source valves (2) are respectively connected to the air outlets of multiple air sources (1); The air distribution chamber (3) has its air inlet connected to the air outlet of the plurality of air source valves (2); A gas flow controller (4) is connected to the outlet of the gas distribution chamber (3); An air inlet valve (5) is connected between the outlet end of the gas flow controller (4) and the inlet end of the experimental chamber.

6. The multi-temperature zone variable atmosphere material compatibility experimental apparatus according to claim 5, characterized in that, The multi-temperature zone heating control unit includes a high-temperature furnace (12), a high-temperature furnace controller (13), and a resistance heating wire (14). The high-temperature furnace (12) and the resistance heating wire (14) are electrically connected to the high-temperature furnace controller (13). The experimental chamber is set inside the heat insulation material (15) inside the high-temperature furnace (12), and multiple independently controllable resistance heating wires (14) are respectively set in relation to the experimental area; The high-temperature furnace (12) is equipped with a furnace temperature thermocouple (16) for measuring the temperature of the high-temperature furnace (12); each experimental zone is equipped with a sample temperature thermocouple (10) for measuring the actual temperature of the sample.

7. The multi-temperature zone variable atmosphere material compatibility experimental apparatus according to claim 6, characterized in that, It also includes a data acquisition control unit (22), which includes: The control module, which is connected to the gas distribution chamber (3), the gas flow controller (4) and the high-temperature furnace controller (13), is used to control the experimental atmosphere and heating temperature; The data acquisition module is used to acquire the pressure data of the pressure gauge (6) in the atmosphere control unit, as well as the temperature data of the furnace temperature thermocouple (16) and the sample temperature measuring thermocouple (10).

8. The multi-temperature zone variable atmosphere material compatibility experimental apparatus according to claim 5, characterized in that, The exhaust gas purification unit includes: An air outlet valve assembly (19) is connected to the air outlet end of the experimental chamber; A vacuum pump (20) is connected to one of the outlet valves in the outlet valve group (19) and is used to evacuate the experimental chamber. The exhaust gas treatment device (21) is connected to another exhaust valve in the exhaust valve group (19) and is used to purify the gas discharged from the experimental chamber.

9. The multi-temperature zone variable atmosphere material compatibility experimental apparatus according to claim 8, characterized in that, The inlet valve (5) is sealed to the high-temperature furnace tube (11) through a first sealing flange (7), and the outlet valve group (19) is sealed to the high-temperature furnace tube (11) through a second sealing flange (18).

10. A method for testing the compatibility of materials in multiple temperature zones with varying atmospheres, characterized in that, Includes the following steps: Sample loading: The experimental container (9) containing the particulate sample (23) and the sheet sample (24) is installed into the experimental chamber; Atmosphere replacement: The experimental chamber is evacuated, and then a preset experimental gas is introduced to establish the experimental atmosphere; Multi-zone heating: Multiple temperature zones within the experimental chamber are independently heated by the multi-zone heating control unit and maintained at their respective target temperatures. Atmosphere maintenance: During the heat preservation period, the experimental atmosphere is maintained as a static atmosphere or a dynamic purge atmosphere through the atmosphere control unit; Cooling and unloading: After the heat preservation is completed, the experimental chamber is cooled down and the material sample is removed.

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