Device and method for testing oxidation resistance of hydrogen and deuterium storage material

Abstract

The invention discloses a device and method for testing the oxidation resistance of a hydrogen and deuterium storage material, and the device for testing the oxidation resistance of the hydrogen and deuterium storage material comprises a closed box, supporting legs installed on the closed box, a control panel installed on the closed box, and a first gas pipeline installed on the closed box. The driving motor is installed at the lower end of the closed box, the installation sleeve is installed at the output end of the driving motor, the outer magnetic rotor is installed on the installation sleeve, the limiting frame is installed on the closed box, the containing table is rotationally connected to the limiting frame, and the inner magnetic rotor is installed on the containing table and transmits magnetic force with the outer magnetic rotor. The sample table is driven to rotate by the magnetic coupling driver, and a sample is dynamically and uniformly exposed in a thermal field and a reaction atmosphere in a testing process by combining an airflow field formed by the inclined spray head, so that the problem of non-uniform heating and reaction caused by a fixed position is fundamentally solved, and the accuracy and reliability of a testing result are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of testing devices, in particular to a device and method for testing the oxidation resistance of hydrogen and deuterium storage materials. BACKGROUND

[0002] Hydrogen and deuterium storage materials are key components of future clean energy systems. Their core role is to store large amounts of hydrogen or deuterium in a safe and compact space. In practical applications, these materials will inevitably come into contact with air or other oxygen-containing atmospheres, leading to oxidation degradation, which seriously affects their hydrogen storage capacity, cycle life, and safety. Therefore, it is crucial to accurately evaluate their oxidation resistance during material research and quality control.

[0003] In the prior art, the temperature distribution inside the reaction chamber is not completely uniform. The samples at fixed positions may be in areas with excessively high or low temperatures for a long time, which can significantly deviate the test results of the oxidation resistance of the samples. In the case of fixed positions, the gas in the reaction chamber may not uniformly contact the surface of the samples, resulting in excessively high or low gas concentrations in certain areas, which can cause the samples to be oxidized to different degrees in different areas, making the test results unable to fully and truly reflect the oxidation resistance characteristics of the materials during the entire reaction process. SUMMARY

[0004] The present application aims to provide a device and method for testing the oxidation resistance of hydrogen and deuterium storage materials to solve the problem of uneven oxidation of samples caused by fixed positions in the background art.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a device for testing the oxidation resistance of hydrogen and deuterium storage materials, comprising a closed box, support legs mounted on the closed box, a control panel mounted on the closed box, a first gas pipeline mounted on the closed box, a drive motor mounted at the lower end of the closed box, a mounting sleeve mounted on the output end of the drive motor, an outer magnetic rotor mounted on the mounting sleeve, a limiting frame mounted on the closed box, a placement table rotatably connected to the limiting frame, an inner magnetic rotor mounted on the placement table and transmitting magnetic force with the outer magnetic rotor, a clamping assembly mounted on the placement table for clamping a sample container, a support assembly mounted on the placement table for supporting the sample container, a gas delivery assembly mounted on the closed box, and a sealing assembly mounted on the upper end of the closed box. The gas delivery assembly is used to deliver the required gas into the closed box. The inner cavity of the closed box is closed by the sealing assembly, and the mounting sleeve is rotatably connected to the closed box.

[0006] Based on the preferred technical solution, the lower end surface of the closed box is made of Hastelloy or L stainless steel and is located between the outer magnetic rotor and the inner magnetic rotor.

[0007] Based on the preferred technical scheme, the clamping assembly comprises a first counterweight connected to the placement table in a sliding manner, a first spring installed between the first counterweight and the placement table, a first extension rod installed at the end of the first counterweight away from the first spring, a first clamping plate installed on the first extension rod and in contact with one side of the sample container, a second counterweight connected to the placement table in a sliding manner, a second spring installed between the second counterweight and the placement table, a second extension rod installed at the end of the second counterweight away from the second spring, and a second clamping plate installed on the second extension rod and in contact with the other side of the sample container.

[0008] Based on the preferred technical scheme, the placement table is provided with a sliding groove at the corresponding positions of the first counterweight, the first extension rod, the second counterweight and the second extension rod, and the first counterweight, the first extension rod, the second counterweight and the second extension rod slide in the sliding groove, and the second extension rod is arranged in an interlaced manner with the first extension rod.

[0009] Based on the preferred technical scheme, the support assembly comprises a rotating ring connected to the placement table in a rotating manner, a nut installed on the rotating ring, a threaded rod threadedly connected to the nut, and a support ball installed at the upper end of the threaded rod, wherein the support ball is spherical and in contact with the sample container.

[0010] Based on the preferred technical scheme, the placement table is provided with a limiting hole at the corresponding position of the threaded rod, and the threaded rod slides in the limiting hole.

[0011] Based on the preferred technical scheme, the gas conveying assembly comprises a second gas conveying pipeline installed on the closed box, a connecting port installed on the second gas conveying pipeline and the closed box, and a spray head installed on the second gas conveying pipeline in an inclined manner.

[0012] Based on the preferred technical scheme, the sealing assembly comprises a flange plate installed at the upper end of the closed box, a sealing ring installed on the flange plate, and a flange cover detachably installed on the flange plate and in contact with the sealing ring.

[0013] Based on the preferred technical scheme, the flange plate and the flange cover are provided with a V-shaped groove at the corresponding position of the sealing ring, and the sealing ring is installed in the V-shaped groove, and the sealing ring is O-shaped.

[0014] A device and method for testing the oxidation resistance of hydrogen and deuterium storage materials, comprising a device for testing the oxidation resistance of hydrogen and deuterium storage materials as described above, and the steps are as follows:

[0015] Step 1: Remove the connecting parts between the flange cover and the flange plate. Remove the flange cover and then turn the nut accordingly. The nut will screw the threaded rod out or in through the thread pair. Under the limit of the limiting hole, the threaded rod can only slide up and down in a straight line, so that the threaded rod will not rotate with the nut. Adjust the height of the support ball at the corresponding position according to the size of the sample container. Then place the container holding the sample on the support ball. The support ball will support the container to make it at a suitable height.

[0016] Step 2: When the sample container is placed on the support ball, the sample container will squeeze the second clamp and the first clamp, causing the second clamp and the first clamp to open in a direction away from each other. The second clamp drives the second extension rod, and the second extension rod drives the second counterweight to compress the second spring. At the same time, the first clamp drives the first extension rod, and the first extension rod drives the first counterweight to compress the first spring. The second spring and the first spring push the second clamp and the first clamp to hold the sample container outside through elasticity.

[0017] Step 3: Then, reinstall the flange cover onto the flange using the connector. The flange cover and flange are pressed together by the V-groove to make the sealing ring fit tightly against the four sides of the V-groove of the flange cover and flange, causing the sealing ring to undergo two-way elastic deformation in both the radial and axial directions.

[0018] Step 4: By connecting an external air pump and related equipment to the first gas delivery pipe, the air inside the sealed chamber is extracted, creating a vacuum inside the chamber. An external gas delivery device can be connected through the connection port to deliver the required gas into the sealed chamber as needed. The gas enters the second gas delivery pipe through the connection port and is sprayed out through several inclined nozzles, ensuring that the gas comes into uniform contact with the sample in the container. The temperature inside the sealed chamber can be adjusted and controlled through the control panel as needed.

[0019] Step 5: Simultaneously, the drive motor is started. The drive motor drives the mounting sleeve, which in turn drives the inner external magnetic rotor to rotate. The outer magnetic rotor, through magnetism, drives the inner magnetic rotor to rotate. The inner magnetic rotor drives the placement stage to rotate within the limiting frame. The placement stage, through the support and clamping components, drives the sample container to rotate synchronously. The rotation of the placement stage generates centrifugal force, causing the second and first counterweights to move away from each other. Simultaneously, the second counterweight drives the second extension rod and the second clamping plate, while the first counterweight, through the first extension rod, drives the first clamping plate, making the second and first clamping plates hold the sample container more securely. Compared with the prior art, the beneficial effects of this invention are:

[0020] 1. The sample stage is driven to rotate by a magnetic coupling driver, and the airflow field formed by the tilting nozzle allows the sample to be dynamically and uniformly exposed to the thermal field and reaction atmosphere during the test. This fundamentally solves the problem of uneven heating and reaction caused by a fixed position, and greatly improves the accuracy and reliability of the test results.

[0021] 2. The centrifugal self-tightening clamping assembly is adopted, which cleverly uses the centrifugal force generated by rotation as an additional locking force to achieve the effect of "the faster the rotation, the tighter the clamping". This effectively prevents the sample from loosening or flying off during high-speed rotation, ensuring the safety of the experimental process and the validity of the sample data.

[0022] 3. The sealing structure composed of V-groove and O-ring provides excellent bidirectional sealing performance, ensuring the long-term sealing stability of the reaction chamber under vacuum or pressure test conditions and reducing the risk of leakage.

[0023] 4. The support components enable rapid and uniform adjustment of sample height, which facilitates the sample loading process. The height can be adjusted according to the size of the sample container, allowing the sample to be placed in a more suitable experimental area. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of one embodiment of the apparatus and method for testing the oxidation resistance of hydrogen storage and deuterium materials according to the present invention;

[0025] Figure 2 for Figure 1 Schematic diagram of the internal structure of the enclosed box;

[0026] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure of the enclosed box;

[0027] Figure 4 This is a schematic cross-sectional view of the placement platform of the present invention;

[0028] Figure 5 This is a schematic diagram of the clamping component structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the supporting component structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the gas delivery component structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the sealing assembly structure of the present invention.

[0032] In the diagram: 21. Enclosed box; 22. Support leg; 23. Control panel; 24. First gas supply pipe; 25. Drive motor; 26. Mounting sleeve; 27. Outer magnetic rotor; 28. Limiting frame; 29. ​​Inner magnetic rotor; 210. Placement platform; 31. First counterweight; 32. First spring; 33. First extension rod; 34. First clamping plate; 35. Second counterweight; 36. Second spring; 37. Second extension rod; 38. Second clamping plate; 41. Rotating ring; 42. Nut; 43. Threaded rod; 44. Support ball; 51. Second gas supply pipe; 52. Connection port; 53. Nozzle; 61. Flange; 62. Sealing ring; 63. Flange cover. Detailed Implementation

[0033] Hydrogen / deuterium storage materials, as key carriers of future clean energy systems, bear the important mission of achieving economical and efficient conversion and safe utilization of hydrogen energy. These materials store hydrogen or deuterium in atomic or molecular form within the material under relatively mild conditions through physical adsorption or chemical bonding, thereby achieving high-density and safe energy storage and transportation. From metal hydrides and complex hydrides to nanostructured carbon materials and metal-organic frameworks (MOFs), various hydrogen storage materials exhibit unique advantages in specific application scenarios, while their oxidation resistance directly determines the material's service life, hydrogen storage capacity, and safety margin under actual operating conditions.

[0034] Oxidative degradation of materials stems from spontaneous reactions with oxidizing atmospheres such as oxygen. This process not only leads to the formation of an oxide layer on the material surface, hindering hydrogen adsorption and dissociation, but may also cause irreversible damage to the bulk structure of the material. For metal-based hydrogen storage materials, oxidation typically begins with the loss of active sites on the material surface, then diffuses to grain boundaries and the interior. For high specific surface area nanomaterials, the large specific surface area makes them more susceptible to reacting with oxygen in the environment, causing pore structure collapse and deactivation of functional groups. Studies show that after exposure to an oxygen-containing atmosphere for several hours, the effective hydrogen storage capacity of some rare earth-based hydrogen storage alloys can decrease by as much as 30%-50%, and the cycle life is significantly shortened.

[0035] In real-world applications, hydrogen / deuterium storage materials inevitably encounter oxygen exposure. For example, during frequent charge-discharge cycles in fuel cell systems, materials may come into contact with low concentrations of oxygen due to minor leaks in system seals or residual gases from the hydrogen charging process. During the filling, transportation, and installation of hydrogen storage tanks, human intervention may cause temporary exposure of the materials to the atmosphere. In the nuclear industry, deuterium storage materials may face more complex oxidizing atmospheres during the operation of specific devices. These real-world applications place stringent demands on the oxidation resistance of materials and highlight the urgent need for accurate assessment of their oxidation resistance performance.

[0036] The precise quantification of the antioxidant properties of materials is not only crucial for material selection and formulation optimization, but also forms the scientific basis for predicting their long-term performance and safety reliability. By simulating the oxidation behavior of materials under different temperatures, pressures, and atmospheric concentrations, researchers can obtain the kinetic parameters, critical conditions, and failure mechanisms of material oxidation, thus providing data support for material modification and protection, system sealing design, and the establishment of safe operating standards. Therefore, developing precise, reliable antioxidant performance testing devices capable of simulating actual working conditions has become an indispensable technical link for hydrogen / deuterium storage materials to move from laboratory research to industrial application.

[0037] The oxidation process of hydrogen / deuterium storage materials is essentially a chemical reaction involving electron transfer between the material and oxygen, following the basic laws of solid-state phase reactions. This process is driven by the decrease in the Gibbs free energy of the reaction system, while its rate is limited by the kinetic barriers of interfacial reactions and mass transport. From an atomic scale perspective, the oxidation of the material begins with the adsorption and dissociation of gas molecules on the material surface, followed by the diffusion of oxygen atoms into the material's interior, where they combine with metal elements or active sites to form oxide nuclei. These oxide nuclei gradually grow and connect to form a continuous oxide layer as the oxidation process progresses.

[0038] Oxidation thermodynamics determines the probability and limit of oxidation of specific materials under certain temperature and pressure conditions. By calculating the equilibrium constant and oxygen partial pressure threshold of different hydrogen storage materials reacting with oxygen, the oxidation tendency of materials at specific oxygen concentrations can be theoretically predicted. For example, some magnesium-based hydrogen storage materials can react with oxygen in the air at room temperature, while some titanium-based materials require higher temperatures to initiate a significant oxidation process. This difference in intrinsic oxidation resistance mainly stems from the oxygen affinity of the constituent elements of the material and the stability of the oxides formed.

[0039] Oxidation kinetics describes how the oxidation rate of a material varies with time, temperature, and environmental parameters. The oxidation process of hydrogen storage materials typically follows specific kinetic models, such as parabolic, linear, or logarithmic laws, corresponding to different rate-determining steps. Parabolic laws indicate that the oxidation process is controlled by ion diffusion, linear laws reflect that interfacial reactions are the rate-determining step, and logarithmic laws usually appear under low-temperature thin-layer oxidation conditions. By analyzing the fitting relationship between the material's oxidation weight gain or capacity decay data and time, the oxidation model followed by the material can be identified, thus revealing its oxidation mechanism.

[0040] The oxidation process of materials exhibits distinct stages. In the initial stage, the formation of discontinuous oxides on the material surface is called the induction phase, and the duration of this phase is a crucial indicator of the material's "safety window" in practical applications. During the subsequent stable oxidation phase, the material gains weight or experiences performance degradation at a relatively constant rate. However, once oxidation reaches a certain point, the oxide layer may rupture or undergo phase transitions, leading to an accelerated oxidation phase and a sharp deterioration in material properties. Understanding the critical conditions and triggering mechanisms of these transitions is essential for predicting the long-term oxidation behavior and lifespan of materials.

[0041] The effects of oxidation on the hydrogen storage performance of materials are mainly achieved through the following pathways: active site shielding—the surface oxide layer hinders the adsorption and dissociation of hydrogen molecules; bulk structure disruption—oxidation-induced lattice expansion and phase transitions lead to blockage of hydrogen diffusion channels; and compositional segregation—the preferential oxidation of specific elements in multi-component materials causes compositional imbalance and loss of catalytic activity. The relative importance of these influencing pathways varies depending on the material system and oxidation conditions, requiring precise test design for differentiation and quantification.

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Please see Figure 1 - Figure 8This invention provides an embodiment of an apparatus for testing the oxidation resistance of hydrogen storage and deuterium materials, comprising a sealed box 21, a support leg 22 mounted on the sealed box 21, a control panel 23 mounted on the sealed box 21, a first gas delivery pipe 24 mounted on the sealed box 21, a drive motor 25 mounted at the lower end of the sealed box 21, a mounting sleeve 26 mounted at the output end of the drive motor 25, an outer magnetic rotor 27 mounted on the mounting sleeve 26, a limiting frame 28 mounted on the sealed box 21, a placement platform 210 rotatably connected to the limiting frame 28, an inner magnetic rotor 29 mounted on the placement platform 210 and transmitting magnetic force to the outer magnetic rotor 27, and a mounting plate 210 mounted on the placement platform 210. The system includes a clamping assembly for holding the sample container, a support assembly for supporting the sample container mounted on the placement stage 210, a gas supply assembly mounted on the sealed box 21, and a sealing assembly mounted on the upper end of the sealed box 21. The gas supply assembly is used to supply the required gas into the sealed box 21. The sealing assembly seals the inner cavity of the sealed box 21. The mounting sleeve 26 is rotatably connected to the sealed box 21. The outer magnetic rotor 27 and the inner magnetic rotor 29 achieve contactless power transmission through magnetic coupling, forming a magnetic drive system. This ensures the stable rotation of the placement stage 210 while maintaining the complete sealing of the sealed box 21, allowing the sample to be uniformly exposed to the testing environment.

[0044] Please see Figure 3 A further solution based on this embodiment is as follows: the lower end face of the sealed box 21 is made of Hastelloy or 316L stainless steel and is located between the outer magnetic rotor 27 and the inner magnetic rotor 29. The lower end face serves as an isolation sleeve, and its material has excellent corrosion resistance and is non-magnetic. It can withstand the corrosion of the test atmosphere and ensure that the rotating magnetic field of the outer magnetic rotor 27 can penetrate efficiently to drive the inner magnetic rotor 29 to rotate synchronously.

[0045] Please see Figure 2 , Figure 4 and Figure 5A further embodiment of this solution includes: a clamping assembly comprising a first counterweight 31 slidably connected to the placement stage 210, a first spring 32 installed between the first counterweight 31 and the placement stage 210, a first extension rod 33 installed on the end of the first counterweight 31 away from the first spring 32, a first clamping plate 34 installed on the first extension rod 33 and in contact with one side of the sample container, a second counterweight 35 slidably connected to the placement stage 210, a second spring 36 installed between the second counterweight 35 and the placement stage 210, and a first clamping plate 34 installed on the side of the second counterweight 35 away from the second spring 36. The two extension rods 37 and the second clamping plate 38 mounted on the second extension rods 37 and in contact with the other side of the sample container constitute a centrifugal self-tightening mechanism. When the placement stage 210 is stationary, the sample can be initially clamped by the elastic force of the first spring 32 and the second spring 36. When the placement stage 210 rotates, the centrifugal force generated by the first counterweight 31 and the second counterweight 35 will overcome the spring force and drive the first clamping plate 34 and the second clamping plate 38 away from each other, thereby locking the sample container more firmly from the inside or the side. The higher the rotation speed, the greater the locking force, effectively preventing the sample from loosening during rotation.

[0046] Please see Figure 4 and Figure 5 A further solution based on this embodiment is as follows: The placement platform 210 has grooves at corresponding positions of the first counterweight 31, the first extension rod 33, the second counterweight 35, and the second extension rod 37. The first counterweight 31, the first extension rod 33, the second counterweight 35, and the second extension rod 37 slide inside the grooves. The second extension rod 37 and the first extension rod 33 are staggered. This groove structure provides precise guidance for the counterweights and extension rods, ensuring that they can only slide smoothly in the radial direction, avoiding jamming or deflection during movement. The staggered arrangement optimizes the spatial layout, making the clamping force distribution more balanced.

[0047] Please see Figure 6 A further embodiment of this solution is as follows: The support assembly includes a rotating ring 41 rotatably connected to the placement stage 210, a nut 42 mounted on the rotating ring 41, a threaded rod 43 threadedly connected to the nut 42, and a support ball 44 mounted on the upper end of the threaded rod 43. The support ball 44 is spherical and in contact with the sample container. By rotating the rotating ring 41, the corresponding nut 42 can be rotated synchronously, thereby driving the threaded rod 43 to rise and fall, realizing rapid adjustment of the height of the sample container. The spherical design of the support ball 44 makes it point-contact with the sample container, which provides stable support, minimizes the contact area, reduces temperature unevenness caused by local heat conduction, and allows the container to have slight deformation or displacement when heated or clamped.

[0048] Please see Figure 6A further solution based on this embodiment is as follows: the placement platform 210 has a limiting hole at the corresponding position of the threaded rod 43, and the threaded rod 43 slides inside the limiting hole. The limiting hole and the threaded rod 43 form a sliding pair, which prevents the threaded rod 43 from rotating with the nut 42, ensuring that it can only perform precise linear motion when the nut 42 rotates, thereby achieving a stable lifting or lowering function.

[0049] Please see Figure 1 and Figure 7 A further embodiment of this solution is as follows: the gas delivery assembly includes a second gas delivery pipe 51 installed on the sealed box 21, a connection port 52 installed between the second gas delivery pipe 51 and the sealed box 21, and a nozzle 53 installed at an angle on the second gas delivery pipe 51. The multiple nozzles 53 at an angle can spray the incoming reaction gas at a specific angle, forming a rotating or convective airflow field inside the sealed box 21. This airflow field works in conjunction with the rotating sample stage to force the gas to fully and uniformly contact the sample surface, effectively eliminating the airflow dead zone and ensuring the uniformity of the oxidation reaction.

[0050] Please see Figure 1 and Figure 8 A further solution based on this embodiment is as follows: the sealing assembly includes a flange 61 installed on the upper end of the sealed box 21, a sealing ring 62 installed on the flange 61, and a flange cover 63 detachably installed on the flange 61 and in contact with the sealing ring 62. This structure facilitates the opening and closing of the reaction chamber, and makes it convenient for sample handling and internal maintenance.

[0051] Please see Figure 8 A further solution based on this embodiment is as follows: V-grooves are provided on the flange 61 and flange cover 63 at the corresponding positions of the sealing ring 62, and the sealing ring 62 is installed inside the V-groove. The sealing ring 62 is O-shaped. The V-groove and the O-ring sealing ring 62 cooperate. When the flange cover 63 is pressed, the sealing ring 62 is squeezed into the narrow bottom of the V-groove, and at the same time, it generates radial and axial bidirectional elastic deformation. It has a higher sealing specific pressure and better sealing effect than the traditional flat seal, and is especially suitable for vacuum and pressure fluctuation conditions.

[0052] Please see Figure 1 - Figure 8 In this embodiment, the present invention provides an apparatus and method for testing the oxidation resistance of hydrogen storage and deuterium materials. The apparatus, as described above, includes the following steps:

[0053] Step 1: Remove the connecting parts between the flange cover 63 and the flange 61. Remove the flange cover 63, and then turn the nut 42 accordingly. The nut 42 screws the threaded rod 43 out or in through the thread pair. Under the limit of the limiting hole, the threaded rod 43 can only slide up and down in a straight line, so that the threaded rod 43 will not rotate with the nut 42. Then adjust the height of the support ball 44 at the corresponding position according to the size of the sample container. Then place the container holding the sample on the support ball 44. The support ball 44 supports the container to make it at a suitable height.

[0054] Step 2: When the sample container is placed on the support ball 44, the sample container will squeeze the second clamping plate 38 and the first clamping plate 34, causing the second clamping plate 38 and the first clamping plate 34 to open in a direction away from each other. The second clamping plate 38 drives the second extension rod 37, and the second extension rod 37 drives the second counterweight 35 to compress the second spring 36. At the same time, the first clamping plate 34 drives the first extension rod 33, and the first extension rod 33 drives the first counterweight 31 to compress the first spring 32. The second spring 36 and the first spring 32 elastically push the second clamping plate 38 and the first clamping plate 34 to clamp the sample container to the outside.

[0055] Step 3: Then, the flange cover 63 is reinstalled on the flange 61 using the connector. The flange cover 63 and the flange 61 are pressed together by the V-groove to make the sealing ring 62 fit tightly against the four sides of the V-groove of the flange cover 63 and the flange 61, so that the sealing ring 62 produces radial and axial bidirectional elastic deformation.

[0056] Step 4: By connecting an external air pump and related equipment to the first gas supply pipe 24, the air inside the sealed box 21 is extracted, making the inner cavity of the sealed box 21 a vacuum state. An external gas supply device can be connected through the connection port 52 to supply the gas required for the experiment into the sealed box 21 as needed. The gas enters the second gas supply pipe 51 through the connection port 52. The second gas supply pipe 51 sprays out through several inclined nozzles 53, so that the gas is evenly contacted with the sample in the container. At the same time, the temperature inside the sealed box 21 can be adjusted and controlled through the control panel 23 as needed for the experiment.

[0057] Step 5: Simultaneously, start the drive motor 25. The drive motor 25 drives the mounting sleeve 26, which in turn drives the inner outer magnetic rotor 27 to rotate. The outer magnetic rotor 27 drives the inner magnetic rotor 29 to rotate through magnetism. The inner magnetic rotor 29 drives the placement stage 210 to rotate inside the limiting frame 28. The placement stage 210 drives the sample container to rotate synchronously through the support assembly and clamping assembly. When the placement stage 210 rotates, it generates centrifugal force. The second counterweight 35 and the first counterweight 31 move away from each other due to centrifugal force. At the same time, the second counterweight 35 drives the second extension rod 37 and the second clamping plate 38. The first counterweight 31 drives the first clamping plate 34 through the first extension rod 33, making the second clamping plate 38 and the first clamping plate 34 clamp the sample container more firmly.

[0058] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An apparatus for testing the oxidation resistance of hydrogen storage and deuterium materials, comprising a sealed box (21), a support leg (22) mounted on the sealed box (21), a control panel (23) mounted on the sealed box (21), and a first gas delivery pipe (24) mounted on the sealed box (21), characterized in that: It also includes a drive motor (25) installed at the lower end of the sealed box (21), a mounting sleeve (26) installed at the output end of the drive motor (25), an outer magnetic rotor (27) installed on the mounting sleeve (26), a limiting frame (28) installed on the sealed box (21), a placement platform (210) rotatably connected to the limiting frame (28), an inner magnetic rotor (29) installed on the placement platform (210) that transmits magnetic force to the outer magnetic rotor (27), a clamping assembly installed on the placement platform (210) to clamp the sample container, a support assembly installed on the placement platform (210) to support the sample container, a gas supply assembly installed on the sealed box (21), and a sealing assembly installed at the upper end of the sealed box (21). The gas supply assembly is used to supply the gas required to the inside of the sealed box (21), and the sealing assembly seals the inner cavity of the sealed box (21). The mounting sleeve (26) is rotatably connected to the sealed box (21).

2. The apparatus for testing the oxidation resistance of hydrogen storage and deuterium materials according to claim 1, characterized in that: The lower end face of the enclosed box (21) is made of Hastelloy or 316L stainless steel and is located between the outer magnetic rotor (27) and the inner magnetic rotor (29).

3. The apparatus for testing the oxidation resistance of hydrogen storage and deuterium materials according to claim 1, characterized in that: The clamping assembly includes a first counterweight (31) slidably connected to the placement stage (210), a first spring (32) installed between the first counterweight (31) and the placement stage (210), a first extension rod (33) installed on the end of the first counterweight (31) away from the first spring (32), a first clamping plate (34) installed on the first extension rod (33) in contact with one side of the sample container, a second counterweight (35) slidably connected to the placement stage (210), a second spring (36) installed between the second counterweight (35) and the placement stage (210), a second extension rod (37) installed on the side of the second counterweight (35) away from the second spring (36), and a second clamping plate (38) installed on the second extension rod (37) in contact with the other side of the sample container.

4. The apparatus for testing the oxidation resistance of hydrogen storage and deuterium materials according to claim 1, characterized in that: The placement platform (210) has grooves at corresponding positions of the first counterweight (31), the first extension rod (33), the second counterweight (35), and the second extension rod (37). The first counterweight (31), the first extension rod (33), the second counterweight (35), and the second extension rod (37) slide inside the grooves, and the second extension rod (37) and the first extension rod (33) are staggered.

5. The apparatus for testing the oxidation resistance of hydrogen storage and deuterium materials according to claim 1, characterized in that: The support assembly includes a rotating ring (41) rotatably connected to the placement stage (210), a nut (42) mounted on the rotating ring (41), a threaded rod (43) threadedly connected to the nut (42), and a support ball (44) mounted on the upper end of the threaded rod (43). The support ball (44) is spherical and in contact with the sample container.

6. The apparatus for testing the oxidation resistance of hydrogen storage and deuterium materials according to claim 1, characterized in that: The placement table (210) has a limiting hole at the corresponding position of the threaded rod (43), and the threaded rod (43) slides inside the limiting hole.

7. The apparatus for testing the oxidation resistance of hydrogen storage and deuterium materials according to claim 1, characterized in that: The gas delivery assembly includes a second gas delivery pipe (51) installed on a sealed box (21), a connection port (52) installed on the second gas delivery pipe (51) and the sealed box (21), and a nozzle (53) installed at an angle on the second gas delivery pipe (51).

8. The apparatus for testing the oxidation resistance of hydrogen storage and deuterium materials according to claim 1, characterized in that: The sealing assembly includes a flange (61) mounted on the upper end of the enclosure (21), a sealing ring (62) mounted on the flange (61), and a flange cover (63) detachably mounted on the flange (61) in contact with the sealing ring (62).

9. The apparatus for testing the oxidation resistance of hydrogen storage and deuterium materials according to claim 1, characterized in that: The flange (61) and flange cover (63) have V-grooves at the corresponding positions of the sealing ring (62), and the sealing ring (62) is installed inside the V-groove and is O-shaped.

10. An apparatus and method for testing the oxidation resistance of hydrogen storage and deuterium materials, characterized in that... The apparatus for testing the oxidation resistance of hydrogen storage and deuterium materials according to any one of claims 1-9 comprises the following steps: Step 1: Remove the connecting parts between the flange cover (63) and the flange (61), remove the flange cover (63), and then turn the nut (42) accordingly. The nut (42) screws the threaded rod (43) out or in through the thread pair. Under the limit of the limiting hole, the threaded rod (43) can only slide up and down in a straight line, so that the threaded rod (43) will not rotate with the nut (42). Then adjust the height of the support ball (44) at the corresponding position according to the size of the sample container. Then place the container holding the sample on the support ball (44) and support it with the support ball (44) to make the container at a suitable height. Step 2: When the sample container is placed on the support ball (44), the sample container will squeeze the second clamp (38) and the first clamp (34), causing the second clamp (38) and the first clamp (34) to open in a direction away from each other. The second clamp (38) drives the second extension rod (37), and the second extension rod (37) drives the second counterweight (35) to compress the second spring (36). At the same time, the first clamp (34) drives the first extension rod (33), and the first extension rod (33) drives the first counterweight (31) to compress the first spring (32). The second spring (36) and the first spring (32) push the second clamp (38) and the first clamp (34) to clamp the sample container outside through elasticity. Step 3: Then, the flange cover (63) is reinstalled on the flange (61) through the connector. The flange cover (63) and the flange (61) squeeze the sealing ring (62) through the V-groove, so that the sealing ring (62) is tightly attached to the four sides of the V-groove of the flange cover (63) and the flange (61), so that the sealing ring (62) produces radial and axial bidirectional elastic deformation. Step 4: By connecting an external air pump and related equipment to the first gas delivery pipe (24), the air inside the sealed box (21) is extracted, so that the inner cavity of the sealed box (21) is in a vacuum state. The gas delivery equipment can be connected to the connection port (52) to deliver the gas required for the experiment into the sealed box (21) according to the experimental needs. The gas enters the second gas delivery pipe (51) through the connection port (52). The second gas delivery pipe (51) is sprayed out through several inclined nozzles (53) so that the gas is evenly contacted with the sample in the container. At the same time, the temperature inside the sealed box (21) can be adjusted and controlled according to the experimental needs through the control panel (23). Step 5: Simultaneously start the drive motor (25) during the experiment. The drive motor (25) drives the mounting sleeve (26), which in turn drives the inner outer magnetic rotor (27) to rotate. The outer magnetic rotor (27) drives the inner magnetic rotor (29) to rotate through magnetism. The inner magnetic rotor (29) drives the placement stage (210) to rotate inside the limiting frame (28). The placement stage (210) drives the sample container to rotate synchronously through the support assembly and clamping assembly. When the placement stage (210) rotates, it generates centrifugal force. The second counterweight (35) and the first counterweight (31) move away from each other due to centrifugal force. At the same time, the second counterweight (35) drives the second extension rod (37) and the second clamping plate (38). The first counterweight (31) drives the first clamping plate (34) through the first extension rod (33), so that the second clamping plate (38) and the first clamping plate (34) clamp the sample container more firmly.

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