Multi-sample hydrogen embrittlement testing system and method

Abstract

The present application relates to the technical field of sample hydrogen embrittlement test, and particularly relates to a multi-sample hydrogen embrittlement test system and method. The present application provides a multi-sample hydrogen embrittlement test system, which comprises a kettle body assembly, a multi-sample bearing assembly and a gas path regulation assembly. The kettle body assembly has an inner cavity, the multi-sample bearing assembly is arranged in the inner cavity, and the multi-sample bearing assembly is used for fixing multiple pieces of hydrogen-charged metal samples. The gas path regulation assembly is communicated with the inner cavity, and the gas path regulation assembly is used for introducing hydrogen-containing gas into the inner cavity and discharging gas in the inner cavity. The multi-sample hydrogen embrittlement test system can improve test efficiency, and ensure the comparability and consistency of test results.

Description

Technical Field

[0001] This invention relates to the field of hydrogen embrittlement testing technology, and in particular to a multi-sample hydrogen embrittlement testing system and method. Background Technology

[0002] With the rapid development of the hydrogen energy industry, the demand for hydrogen as a clean energy carrier in storage, transportation, and utilization is increasing. Consequently, the performance and safety of steel under high-pressure pure hydrogen or hydrogen-blended gas environments are receiving growing attention. Hydrogen embrittlement is a key factor restricting the safe operation of hydrogen pipelines, hydrogen storage equipment, and related infrastructure.

[0003] In related technologies, hydrogen embrittlement testing often uses single-sample pressure vessels to carry out hydrogen filling and related testing. Each sample needs to be vacuumed and filled with hydrogen separately, which results in extremely low testing efficiency. Furthermore, the environmental conditions of different test batches are prone to slight differences, which seriously affects the comparability of test results and the consistency of data.

[0004] Therefore, there is an urgent need to design a multi-sample hydrogen embrittlement testing system and method to solve the above technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide a multi-sample hydrogen embrittlement testing system and method that can improve testing efficiency while ensuring the comparability and consistency of test results.

[0006] To achieve this objective, the present invention adopts the following technical solution: On one hand, the present invention provides a multi-sample hydrogen embrittlement testing system, comprising: A vessel body assembly having an internal cavity; A multi-sample carrier assembly is provided in the inner cavity and is used to fix multiple metal samples to be charged with hydrogen. A gas path control component is connected to the inner cavity and is used to introduce hydrogen-containing gas into the inner cavity and to discharge gas from the inner cavity.

[0007] As an optional technical solution for a multi-sample hydrogen embrittlement testing system, the multi-sample bearing assembly includes a base, a support rod, a horizontal fixing plate, and a clamping unit. Multiple horizontal fixing plates and clamping units are provided. One end of the support rod is threaded to the base, and the other end of the support rod passes through and connects to multiple horizontal fixing plates. One end of the clamping unit is detachably connected to the horizontal fixing plate, and the other end is used to clamp the metal sample to be charged with hydrogen. Each metal sample to be charged with hydrogen corresponds to one clamping unit.

[0008] As an optional technical solution for a multi-sample hydrogen embrittlement testing system, each layer of the horizontal fixing plate has multiple clamping units evenly distributed in the circumferential direction, and the clamping units on each layer of the horizontal fixing plate are staggered along the height direction of the vessel assembly.

[0009] As an optional technical solution for a multi-sample hydrogen embrittlement testing system, the multi-layered horizontal fixing plates are equally spaced along the height direction of the vessel assembly; the support rod extends along the axial direction of the vessel assembly.

[0010] As an optional technical solution for a multi-sample hydrogen embrittlement testing system, the vessel assembly includes a vessel body and a vessel lid. The vessel body has an internal cavity, and the vessel lid is detachably connected to the end of the vessel body and seals the internal cavity.

[0011] As an optional technical solution for a multi-sample hydrogen embrittlement testing system, the vessel assembly also includes a fastener, one end of which is pressed against the vessel cover and the other end of which is pressed against the vessel body, so as to form a high-pressure seal between the vessel cover and the vessel body.

[0012] As an optional technical solution for a multi-sample hydrogen embrittlement testing system, a flange is provided on the outer periphery of the vessel body, and the other end of the fastener is pressed against the flange.

[0013] As an optional technical solution for a multi-sample hydrogen embrittlement testing system, the reactor lid is provided with an air inlet and an exhaust outlet, and the gas path control component includes an air inlet pipe and an exhaust pipe; The air intake pipe is connected to the air intake interface, and the air intake pipe is used to introduce high-purity hydrogen or hydrogen-doped mixture into the inner cavity. The exhaust pipe is connected to the exhaust port, and the exhaust pipe is used to discharge the gas in the inner cavity.

[0014] As an optional technical solution for a multi-sample hydrogen embrittlement testing system, the multi-sample hydrogen embrittlement testing system also includes a pressure gauge and a safety valve, and the reactor lid is also provided with a pressure measuring interface and a pressure relief interface; The test end of the pressure gauge is connected to the pressure measuring interface to monitor the gas pressure in the inner cavity in real time. The safety valve is connected to the pressure relief port, and automatically releases pressure when the gas pressure in the inner cavity exceeds the preset opening pressure.

[0015] On the other hand, the present invention provides a multi-sample hydrogen embrittlement testing method, which uses the multi-sample hydrogen embrittlement testing system described in any of the above optional technical solutions to perform multi-sample hydrogen embrittlement testing. The multi-sample hydrogen embrittlement testing method includes the following steps: S1. Sample loading and sealing: Install multiple metal samples to be charged with hydrogen onto the multi-sample carrier assembly, place the multi-sample carrier assembly into the inner cavity of the reactor body assembly and seal the inner cavity. S2. Vacuuming and Replacement: Vacuum the inner cavity of the vessel assembly using a vacuum device, then fill the inner cavity with high-purity hydrogen, and then vent the gas in the inner cavity; repeat the vacuuming, hydrogen filling, and venting steps to remove air, water vapor, and impurity gases from the inner cavity. S3, Hydrogen charging stage: High-purity hydrogen or hydrogen-doped mixed gas at a preset pressure is introduced into the inner cavity through the gas path control component to control the inner cavity within a preset temperature range, maintain constant pressure and temperature, and perform gas phase hydrogen charging of the metal sample to be charged for a preset time. S4. Pressure relief and sampling: After hydrogen charging is completed, the internal pressure is released to near atmospheric pressure through the gas path control component. After opening the vessel body component, the multi-sample carrier component is taken out, and the hydrogen-charged metal sample is removed to complete the hydrogen charging process.

[0016] The beneficial effects of the present invention include at least the following: This invention provides a multi-sample hydrogen embrittlement testing system, which includes a vessel assembly, a multi-sample support assembly, and a gas path control assembly. The vessel assembly has an inner cavity, within which the multi-sample support assembly is disposed and used to fix multiple metal samples to be charged with hydrogen. The gas path control assembly communicates with the inner cavity and is used to introduce hydrogen-containing gas into the inner cavity and to expel gas from the inner cavity.

[0017] The multi-sample carrier assembly is placed entirely within the inner cavity of the reactor assembly, serving as a fixed carrier for multiple hydrogen-filled metal samples. This allows for the simultaneous fixation of multiple samples within the same cavity, ensuring they are all situated in the same high-pressure hydrogen-containing gas environment. Combined with the gas path control assembly's unified filling and venting control of this single cavity, there is no need for separate vacuuming and hydrogen filling operations for each sample. A single filling and venting process completes gas replacement and gas-phase hydrogen filling for multiple samples, significantly improving the efficiency of hydrogen embrittlement testing. Furthermore, since multiple samples undergo the entire hydrogen filling process within the same reactor assembly, the pressure, temperature, and gas composition are completely identical, eliminating subtle differences in environmental conditions between different test batches. This ensures the uniformity of hydrogen filling conditions for multiple samples, improving the comparability and consistency of subsequent hydrogen embrittlement test results and avoiding the technical problem of large result dispersion.

[0018] This invention provides a multi-sample hydrogen embrittlement test method, which can complete the hydrogen charging treatment of multiple metal samples to be charged with hydrogen in a single operation, greatly improving the test efficiency; moreover, the hydrogen charging of multiple metal samples to be charged with hydrogen is carried out in the same constant pressure and temperature environment, and the hydrogen charging conditions are completely consistent, ensuring the uniformity of the hydrogen charging effect of multiple metal samples to be charged with hydrogen and improving the comparability of subsequent test results. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the multi-sample hydrogen embrittlement testing system provided in the embodiment of the present invention; Figure 2 This is a schematic flowchart of the multi-sample hydrogen embrittlement test method provided in the embodiments of the present invention.

[0021] Figure Labels 100. Metal sample to be charged with hydrogen; 10. Vessel body assembly; 11. Inner cavity; 12. Vessel body; 121. Flange; 13. Vessel lid; 131. Air inlet port; 132. Air outlet port; 133. Pressure testing port; 134. Pressure relief port; 14. Fasteners; 20. Multi-sample bearing assembly; 21. Base; 22. Support rod; 23. Horizontal fixing plate; 30. Airflow control components; 31. Intake pipe; 32. Exhaust pipe; 40. Pressure gauge; 50. Safety valve. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are used only for the convenience of describing the invention and for simplifying the description, and 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] This embodiment provides a multi-sample hydrogen embrittlement testing system that can improve testing efficiency while ensuring the comparability and consistency of test results.

[0031] like Figure 1 As shown, the multi-sample hydrogen embrittlement testing system mainly includes a vessel assembly 10, a multi-sample support assembly 20, and a gas path control assembly 30. The vessel assembly 10 has an inner cavity 11, and the multi-sample support assembly 20 is disposed within the inner cavity 11, used to fix multiple metal samples 100 to be charged with hydrogen. The gas path control assembly 30 is connected to the inner cavity 11 and is used to introduce hydrogen-containing gas into the inner cavity 11 and to expel gas from the inner cavity 11.

[0032] Based on the above design, in this embodiment, the multi-sample carrier assembly 20 is inserted into the inner cavity 11 of the vessel body assembly 10 as a fixed carrier for multiple hydrogen-filled metal samples 100. This allows for the synchronous fixing of multiple hydrogen-filled metal samples 100 within the same inner cavity 11, ensuring that the multiple samples are in the same high-pressure hydrogen-containing gas environment. Combined with the gas path control assembly 30's unified filling and venting control of this single inner cavity 11, there is no need to perform separate vacuuming and hydrogen filling operations for each hydrogen-filled metal sample 100. A single filling and venting operation can complete the gas replacement and gas-phase hydrogen filling of multiple samples, significantly improving the experimental efficiency of hydrogen embrittlement testing. Meanwhile, multiple metal samples 100 to be charged with hydrogen complete the entire hydrogen charging process in the inner cavity 11 of the same reactor assembly 10. The environmental conditions such as pressure, temperature, and gas composition are completely consistent, thereby eliminating the slight differences in environmental conditions between different test batches, ensuring the uniformity of hydrogen charging conditions for multiple metal samples 100 to be charged with hydrogen, improving the comparability and consistency of subsequent hydrogen embrittlement test results, and thus avoiding the technical problem of large dispersion of test results.

[0033] like Figure 1As shown, the multi-sample carrying assembly 20 in this embodiment includes a base 21, a support rod 22, a horizontal fixing plate 23, and a clamping unit (not shown in the figure). Multiple horizontal fixing plates 23 and clamping units are provided. One end of the support rod 22 is threadedly connected to the base 21, and the other end of the support rod 22 is sequentially inserted through and connected to multiple horizontal fixing plates 23, so that the base 21, the support rod 22, and the multiple horizontal fixing plates 23 form an integrated rigid frame structure, ensuring the overall structural stability of the multi-sample carrying assembly 20, avoiding deformation under high-pressure gas environment, and ensuring the accuracy of the fixed position of the hydrogen-filled metal sample 100.

[0034] One end of the clamping unit is detachably connected to the horizontal fixing plate 23, and the other end is used to clamp the metal sample 100 to be charged with hydrogen; and the metal sample 100 to be charged with hydrogen is set one-to-one with the clamping unit. Each metal sample 100 to be charged with hydrogen is fixed by an independent clamping unit to avoid contact between the metal samples 100 to be charged with hydrogen, to prevent mutual interference of hydrogen diffusion between the metal samples 100 to be charged with hydrogen during the hydrogen charging process, and to ensure the independence of the hydrogen charging test of each metal sample 100 to be charged with hydrogen.

[0035] For example, the clamping unit may adopt a claw-type, clamp-type, or suspension structure, which can be selected according to the shape of the metal sample 100 to be filled with hydrogen.

[0036] Furthermore, the multi-layered horizontal fixing plates 23 are evenly spaced along the height direction of the vessel assembly 10, and the support rods 22 extend along the axial direction of the vessel assembly 10, forming a centrally symmetrical structure. Multiple clamping units are evenly distributed circumferentially on each layer of the horizontal fixing plates 23, and the clamping units on each layer of the horizontal fixing plates 23 are staggered along the height direction of the vessel assembly 10. This staggered arrangement allows multiple hydrogen-filled metal samples 100 to be dispersed within the vessel assembly 10, ensuring that the contact area and diffusion path between each hydrogen-filled metal sample 100 and hydrogen are consistent, thus avoiding the problems of gas flow short-circuiting or uneven local hydrogen concentration caused by dense accumulation of the hydrogen-filled metal samples 100.

[0037] Specifically, the support rod 22 is made of high-strength alloy steel bar with an anti-corrosion treatment. The horizontal fixing plate 23 is a circular or square plate with a through hole in the center for the support rod 22 to pass through, and is fixed to the support rod 22 by nuts or pins. The number of clamping units arranged on the horizontal fixing plate 23 is determined according to the size of the metal sample 100 to be charged with hydrogen, usually 4 to 8, evenly distributed at 90-degree or 45-degree intervals.

[0038] The staggered arrangement refers to the clamping units of two adjacent horizontal fixing plates 23 being staggered by a certain interval angle on the horizontal projection. For example, the first layer of clamping units is located at 0°, 90°, 180°, and 270°, and the second layer is located at 45°, 135°, 225°, and 315°.

[0039] The multi-layer horizontal fixing plates 23 are equally spaced along the height direction of the vessel assembly 10. Specifically, the vertical distance between two adjacent layers of horizontal fixing plates 23 is equal, and the spacing is determined according to the length of the metal sample 100 to be charged with hydrogen and the gas flow requirements. It is usually 1.2 to 1.5 times the length of the metal sample 100 to be charged with hydrogen, to ensure that the metal samples 100 to be charged with hydrogen do not contact each other and leave sufficient airflow channels.

[0040] like Figure 1 As shown, the vessel assembly 10 in this embodiment includes a vessel body 12, a vessel lid 13, and a fastener 14. The vessel body 12 has an inner cavity 11. The vessel lid 13 is detachably connected to the end of the vessel body 12 and seals the inner cavity 11. One end of the fastener 14 is pressed against the vessel lid 13, and the other end is pressed against the vessel body 12, so that a high-pressure seal is formed between the vessel lid 13 and the vessel body 12.

[0041] Specifically, the vessel body 12 is made of high-pressure resistant alloy steel and is a thick-walled cylindrical shape, capable of withstanding high-pressure hydrogen environments. A flange 121 is provided on the outer periphery of the vessel body 12 for engaging with fasteners 14 to form a high-pressure seal. A high-pressure seal is achieved between the vessel lid 13 and the vessel body 12 via fasteners 14. One end of the fastener 14 is pressed against the vessel lid 13, and the other end is pressed against the flange 121 of the vessel body 12. By uniformly tightening to a specified torque, a reliable high-pressure seal is formed between the vessel lid 13 and the vessel body 12.

[0042] In some alternative embodiments, the vessel body 12 is machined from forgings or thick-walled tubing, and the inner wall is polished to reduce hydrogen adsorption. The vessel lid 13 is connected to the vessel body 12 at the end by a flange or threaded connection, with a metal gasket or O-ring used for sealing. The detachable connection facilitates sample loading, sampling, and equipment maintenance.

[0043] In some optional embodiments, the fasteners 14 employ bow-shaped clamps, clamps, or bolt pressure plates, with multiple fasteners evenly arranged around the circumference of the vessel lid 13, ensuring uniform stress on the sealing surface through symmetrical tightening. High-pressure sealing is achieved through the plastic deformation of metal gaskets or the compression of elastomeric sealing rings.

[0044] like Figure 1As shown, in this embodiment, the vessel lid 13 is provided with an inlet port 131 and an outlet port 132. The gas path control component 30 includes an inlet pipe 31 and an outlet pipe 32. The inlet pipe 31 is connected to the inlet port 131 and is used to introduce high-purity hydrogen or a hydrogen-doped mixture into the inner cavity 11. The outlet pipe 32 is connected to the outlet port 132 and is used to discharge the gas in the inner cavity 11. The multi-sample hydrogen embrittlement test system also includes a pressure gauge 40 and a safety valve 50. The vessel lid 13 is also provided with a pressure measuring port 133 and a pressure relief port 134. The test end of the pressure gauge 40 is connected to the pressure measuring port 133 to monitor the gas pressure in the inner cavity 11 in real time. The safety valve 50 is connected to the pressure relief port 134 and automatically relieves pressure when the gas pressure in the inner cavity 11 exceeds the preset opening pressure to prevent overpressure conditions and improve safety performance.

[0045] Furthermore, in this embodiment, a flow controller, a shut-off valve, and a check valve can be installed on the intake pipe 31 to achieve controllable inflation volume and inflation rate and prevent backflow. A throttle valve can be installed on the exhaust pipe 32 to reduce temperature drop and impact during the depressurization process.

[0046] For example, pressure gauge 40 is a high-pressure resistant, corrosion-resistant diaphragm pressure gauge or sensor pressure gauge. Safety valve 50 is a spring-loaded or lever-type safety valve, with the opening pressure set at 80%-90% of the design pressure of vessel assembly 10, and the discharge capacity meets the requirements for rapid pressure relief. Pressure measuring port 133 and pressure relief port 134 are independently set on vessel cover 13 to avoid mutual interference.

[0047] In some optional embodiments, the pressure gauge 40 is connected to a data logger or interlocking unit signal to achieve pressure monitoring and over-limit interlocking protection. When an abnormal pressure increase is detected, the interlocking unit can automatically trigger the safety valve 50 to release pressure or cut off the gas supply, achieving active safety protection. The safety valve 50 has manual testing and reset functions, which facilitates periodic verification of its opening pressure and sealing performance, ensuring the reliability of the overpressure protection function.

[0048] like Figure 2 As shown, this embodiment also provides a multi-sample hydrogen embrittlement test method, which uses the above-described multi-sample hydrogen embrittlement test system to perform multi-sample hydrogen embrittlement testing. The multi-sample hydrogen embrittlement test method includes the following steps: S1. Sample loading and sealing: Install multiple metal samples 100 to be charged with hydrogen on the multi-sample carrier assembly 20, place the multi-sample carrier assembly 20 into the inner cavity 11 of the vessel body assembly 10, and seal the inner cavity 11 of the vessel body assembly 10.

[0049] Specifically, multiple hydrogen-filled metal samples 100 are respectively installed on each clamping unit of the multi-sample carrier assembly 20 to ensure that the spacing and axial position of each hydrogen-filled metal sample 100 are consistent. The multi-sample carrier assembly 20 is placed into the inner cavity 11 of the vessel body 12, the vessel lid 13 is covered, and the fasteners 14 are tightened evenly to the specified torque to form a high-pressure seal between the vessel lid 13 and the vessel body 12.

[0050] S2. Vacuuming and Replacement: Vacuum the inner cavity 11 of the vessel assembly 10 using a vacuum device, then fill the inner cavity 11 with high-purity hydrogen, and then vent the gas from the inner cavity 11. Repeat the steps of vacuuming, filling with hydrogen, and venting to remove the air, water vapor, and impurity gases from the inner cavity 11.

[0051] Specifically, the exhaust pipe 32 is connected to the vacuum system, and the vacuum equipment is started to evacuate the inner cavity 11 to the set limit vacuum level and maintain it. Then the exhaust side is closed, and high-purity hydrogen or a hydrogen-blended gas of a set proportion is slowly introduced through the intake pipe 31 to a low pressure, and then the exhaust pipe 32 is opened to vent. The evacuation, hydrogen filling, and venting cycles are repeated several times according to the process requirements until the oxygen partial pressure drops below the set threshold to remove the air, water vapor, and impurity gases from the inner cavity 11.

[0052] S3. Hydrogen Charging Stage: High-purity hydrogen or hydrogen-doped gas at a preset pressure is introduced into the inner cavity 11 through the gas path control component 30, controlling the inner cavity 11 within a preset temperature range, maintaining a constant pressure and temperature state, and charring the metal sample 100 to be charged with hydrogen in the gas phase for a preset time. During this period, the pressure stability is monitored in real time by the pressure gauge 40, and the safety valve 50 is in standby state to prevent overpressure.

[0053] S4. Pressure relief and sampling: After hydrogen charging is completed, the pressure in the inner cavity 11 is released to near atmospheric pressure through the gas path control component 30. After opening the vessel body component 10, the multi-sample carrier component 20 is taken out, and the hydrogen-charged metal sample is removed to complete the hydrogen charging process.

[0054] Specifically, after maintaining the preset time, the pressure is gradually reduced to atmospheric pressure through the throttle valve of the exhaust pipe 32, controlling the exhaust rate to avoid adverse effects caused by rapid pressure reduction. After confirming safety, the fasteners 14 are removed, the reactor lid 13 is opened, the multi-sample support assembly 20 is taken out, and the hydrogen-filled metal samples are taken out one by one, proceeding to the subsequent hydrogen content determination or mechanical test.

[0055] This multi-sample hydrogen embrittlement test method can complete the hydrogen charging treatment of multiple metal samples 100 to be charged with hydrogen in a single operation, which greatly improves the test efficiency. Moreover, the hydrogen charging of multiple metal samples 100 to be charged with hydrogen is completed in the same constant pressure and temperature environment, and the hydrogen charging conditions are completely consistent, which ensures the uniformity of the hydrogen charging effect of multiple metal samples 100 to be charged with hydrogen and improves the comparability of subsequent test results.

[0056] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

[0057] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A multi-sample hydrogen embrittlement testing system, characterized in that, include: The vessel body assembly (10) has an inner cavity (11). A multi-sample carrier assembly (20) is disposed in the inner cavity (11) and is used to fix multiple metal samples (100) to be charged with hydrogen. Gas path control component (30) is connected to the inner cavity (11) and is used to introduce hydrogen-containing gas into the inner cavity (11) and discharge gas in the inner cavity (11).

2. The multi-sample hydrogen embrittlement testing system according to claim 1, characterized in that, The multi-sample carrying assembly (20) includes a base (21), a support rod (22), a horizontal fixing plate (23), and a clamping unit. Multiple horizontal fixing plates (23) and clamping units are provided. One end of the support rod (22) is threaded to the base (21), and the other end of the support rod (22) is sequentially inserted through and connected to multiple horizontal fixing plates (23). One end of the clamping unit is detachably connected to the horizontal fixing plate (23), and the other end is used to clamp the hydrogen-filled metal sample (100). The hydrogen-filled metal sample (100) and the clamping unit are arranged in a one-to-one correspondence.

3. The multi-sample hydrogen embrittlement testing system according to claim 2, characterized in that, Each of the horizontal fixing plates (23) has a plurality of clamping units evenly distributed in the circumferential direction, and the clamping units on each of the horizontal fixing plates (23) are staggered along the height direction of the vessel assembly (10).

4. The multi-sample hydrogen embrittlement testing system according to claim 2, characterized in that, The multi-layered horizontal fixing plates (23) are equally spaced along the height direction of the vessel assembly (10); the support rod (22) extends along the axial direction of the vessel assembly (10).

5. The multi-sample hydrogen embrittlement testing system according to claim 1, characterized in that, The vessel assembly (10) includes a vessel body (12) and a vessel lid (13). The vessel body (12) has an inner cavity (11) inside. The vessel lid (13) is detachably connected to the end of the vessel body (12) and seals the inner cavity (11).

6. The multi-sample hydrogen embrittlement testing system according to claim 5, characterized in that, The vessel assembly (10) also includes a fastener (14), one end of which is pressed against the vessel cover (13) and the other end of which is pressed against the vessel body (12) to form a high-pressure seal between the vessel cover (13) and the vessel body (12).

7. The multi-sample hydrogen embrittlement testing system according to claim 6, characterized in that, The outer periphery of the vessel body (12) is provided with a flange (121), and the other end of the fastener (14) is pressed against the flange (121).

8. The multi-sample hydrogen embrittlement testing system according to claim 5, characterized in that, The lid (13) is provided with an air inlet (131) and an exhaust outlet (132), and the air path control component (30) includes an air inlet pipe (31) and an exhaust pipe (32). The air intake pipe (31) is connected to the air intake interface (131), and the air intake pipe (31) is used to introduce high-purity hydrogen or hydrogen-doped mixture into the inner cavity (11); The exhaust pipe (32) is connected to the exhaust port (132), and the exhaust pipe (32) is used to discharge the gas in the inner cavity (11).

9. The multi-sample hydrogen embrittlement testing system according to claim 8, characterized in that, The multi-sample hydrogen embrittlement test system also includes a pressure gauge (40) and a safety valve (50), and the pressure measuring interface (133) and the pressure relief interface (134) are also provided on the lid (13). The test end of the pressure gauge (40) is connected to the pressure measuring interface (133) to monitor the gas pressure in the inner cavity (11) in real time; The safety valve (50) is connected to the pressure relief port (134), and automatically releases pressure when the gas pressure in the inner cavity (11) exceeds the preset opening pressure.

10. A multi-sample hydrogen embrittlement test method, characterized in that, The multi-sample hydrogen embrittlement test is performed using the multi-sample hydrogen embrittlement test system according to any one of claims 1-9, and the multi-sample hydrogen embrittlement test method includes the following steps: S1. Sample loading and sealing: Install multiple metal samples (100) to be charged with hydrogen on the multi-sample carrier assembly (20), place the multi-sample carrier assembly (20) into the inner cavity (11) of the vessel body assembly (10) and seal the inner cavity (11). S2. Vacuuming and replacement: Vacuuming is performed on the inner cavity (11) of the vessel assembly (10) using a vacuum device, followed by filling the inner cavity (11) with high-purity hydrogen, and then venting the gas in the inner cavity (11); the steps of vacuuming, filling with hydrogen, and venting are repeated to remove the air, water vapor and impurity gas in the inner cavity (11); S3, Hydrogen charging stage: High-purity hydrogen or hydrogen-doped mixed gas at a preset pressure is charged into the inner cavity (11) through the gas path control component (30), the inner cavity (11) is controlled within a preset temperature range, a constant pressure and constant temperature state is maintained, and the metal sample (100) to be charged with hydrogen is charged with hydrogen in the gas phase for a preset time. S4. Depressurization and Sampling: After hydrogen charging is completed, release the pressure in the inner cavity (11) to near atmospheric pressure through the gas path control component (30), open the vessel body component (10), take out the multi-sample carrier component (20), remove the hydrogen-charged metal sample, and complete the hydrogen charging process.

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