Simple electrochemical hydrogen charging device for metal material

Abstract

The utility model belongs to the technical field of hydrogen pre-charging for metal material hydrogen behavior research, and particularly relates to a simple electrochemical hydrogen charging device for a metal material and a use method of the simple electrochemical hydrogen charging device. Wherein the electrochemical hydrogen charging bracket comprises an acrylic upper disc, a lower disc, six arc shells with rectangular sections and a supporting column, a sample inlet hole is formed in the center of the upper disc, and six anode placing holes are uniformly distributed around the upper disc; the six arc shells with the rectangular sections are tightly attached to the upper portion of the upper disc, distributed among the six anode containing holes and used for fixedly connecting metal wires of the anodes. The device has the advantages that the anodes are easy to detach and replaceable, anode materials can be adjusted according to actual hydrogen filling requirements, the anodes are annularly distributed around the hydrogen filling sample, the hydrogen filling efficiency of the surface of the sample is consistent, hydrogen filling is more uniform, the support has a certain size, hydrogen filling electrolyte is saved, and economic benefits are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pre-charging hydrogen for studying hydrogen behavior of metal materials, and in particular relates to a simple electrochemical hydrogen charging device for metal materials. Background Art

[0002] When high-strength metal materials are in service in a hydrogen-rich environment, they face the risk of hydrogen embrittlement fracture failure. Therefore, studying the hydrogen diffusion and hydrogen-induced damage behavior of metal materials can provide important theoretical support for the design of hydrogen traps for hydrogen-embrittlement-resistant metal materials, thereby helping to improve their ability to resist hydrogen embrittlement failure. When studying hydrogen diffusion behavior and hydrogen embrittlement failure mechanisms, it is necessary to charge the sample with hydrogen. The most common hydrogen charging methods are water electrolysis hydrogen charging and electrochemical hydrogen charging. In small hydrogen charging systems, the single-electrolytic cell electrochemical hydrogen charging method has become the first choice for laboratory hydrogen charging because of its simplicity, high efficiency, and strong operability. However, most traditional non-integrated single-electrolytic cell hydrogen charging devices have a single anode terminal and no specific fixing device, which can easily lead to inconsistent hydrogen charging effects each time, unstable and uneven hydrogen charging; and the integrated device has a complex structure, strict requirements on the sample size, and its anode material is not easy to replace, which has the problem of low efficiency.

[0003] In the prior art, the drawbacks of single-electrolytic cell electrochemical hydrogen charging devices have affected the efficiency and uniformity of hydrogen charging to varying degrees, and are not universal and standardized. Therefore, achieving the simplicity, universality and standardization of hydrogen charging devices at the same time is the key to achieving high-efficiency and high-quality hydrogen charging. Utility Model Content

[0004] The utility model aims to provide a simple electrochemical hydrogen charging device for metal materials, which overcomes the shortcomings of the prior art. Six anode placement holes are arranged on the hydrogen charging bracket, and six arc hollow shells with rectangular cross-sections and staggered with the anode placement holes are arranged above the upper disc to fix the metal wires of the anodes for connection, so as to ensure that the anode materials are easy to replace and are evenly distributed in the space around the hydrogen charging sample, so as to achieve uniformity of hydrogen charging; the upper disc, the lower disc and the support column of the hydrogen charging bracket all have a certain thickness, so as to have a certain volume, and the hydrogen charging electrolyte is saved while having high quality.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a simple electrochemical hydrogen charging device for metal materials, including a constant current hydrogen charging instrument and an electrochemical hydrogen charging bracket;

[0006] The constant current hydrogen charging instrument is connected to two positive and negative electrode wires with clamps;

[0007] The electrochemical hydrogen charging support is composed of an upper disc, a lower disc, six arc shells with rectangular cross-sections and a support column. A sample inlet hole is opened in the center of the upper disc, and six anode placement holes are opened on the upper disc and are evenly distributed around the sample inlet hole. Six arc shells with rectangular cross-sections are tightly fitted above the upper disc, and the arc shells are connected to the anode placement holes. The support column is used to connect the upper disc and the lower disc.

[0008] Preferably, the current on the constant current hydrogen charging instrument does not exceed 2A.

[0009] Preferably, the support column is closely connected to the upper disc and the lower disc, and the support column is in the shape of a quadrangular prism with a square bottom surface, and its height is 80~170mm.

[0010] Preferably, the thickness of the upper disc, the lower disc and the support column are all 2-6 mm.

[0011] Preferably, the diameter of the sample inlet hole is 10-15 mm, and the diameter of the anode placement hole is 5-8 mm.

[0012] Preferably, the hollow rectangle of the arc shell with a rectangular cross-section has a size of 3 mm×2 mm, which is used to fix the metal wire connected to the anode.

[0013] Preferably, the anode placement hole enables the anode material to fully contact with the hydrogen-charging electrolyte.

[0014] Preferably, the upper disc, the lower disc, the arc shell and the support column are all made of acrylic material. Beneficial Effects

[0015] The utility model provides a simple electrochemical hydrogen charging device for metal materials. It has the following beneficial effects: the simple electrochemical hydrogen charging device for metal materials, 1) by setting a hollow arc shell with a rectangular cross section above the upper disk of the electrochemical hydrogen charging support, the metal wire connected to the anode is fixed, so that the anode is easy to disassemble and replaceable, which can meet the needs of changing the anode during laboratory electrochemical hydrogen charging;

[0016] 2) By setting six anode placement holes distributed around the sample inlet hole on the disc of the electrochemical hydrogen charging support, the anodes are evenly distributed around the hydrogen charging sample in space to ensure that the hydrogen charging efficiency of each surface of the sample is consistent, making the hydrogen charging more uniform;

[0017] 3) The upper disc, the lower disc and the support column of the electrochemical hydrogen charging support all have a certain thickness, so they have a certain volume. While having high quality, they also save hydrogen charging electrolyte and improve economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a schematic diagram of the top view structure of the electrochemical hydrogen charging bracket of the utility model.

[0020] Figure 3 It is a schematic diagram of the cross-sectional structure of the electrochemical hydrogen charging bracket of the utility model.

[0021] Figure 4 It is a left-side structural schematic diagram of the electrochemical hydrogen charging bracket of the utility model.

[0022] In the figure: 1. upper disc; 2. lower disc; 3. sample inlet; 4. anode placement hole; 5. arc shell; 6. support column. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] All electrical components in this case are connected to their corresponding power supplies through wires by personnel in this field, and a suitable controller should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working sequence between the electrical components in the following working principle to complete the electrical connection. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0025] See also Figure 1-4 , the utility model provides a technical solution: a simple electrochemical hydrogen charging device for metal materials, including, a constant current hydrogen charging instrument and an electrochemical hydrogen charging bracket;

[0026] The constant current hydrogen charging instrument is connected to two positive and negative electrode wires with clamps;

[0027] The electrochemical hydrogen charging support is composed of an upper disc 1, a lower disc 2, six arc shells 5 with rectangular cross-sections and a support column 6. A sample inlet hole 3 is opened in the center of the upper disc 1, and six anode placement holes 4 are opened on the upper disc 1 and are evenly distributed around the sample inlet hole 3. Six arc shells 5 with rectangular cross-sections are tightly fitted above the upper disc 1. The arc shells 5 are connected to the anode placement holes 4, and the support column 6 is used to connect the upper disc 1 and the lower disc 2.

[0028] The current on the constant current hydrogen charging instrument does not exceed 2A.

[0029] The support column 6 is closely connected to the upper disc 1 and the lower disc 2. The support column 6 is in the shape of a quadrangular prism with a square bottom surface and a height of 80-170 mm.

[0030] The thickness of the upper disc 1, the lower disc 2 and the support column 6 are all 2-6 mm.

[0031] The diameter of the sample inlet hole 3 is 10-15 mm, and the diameter of the anode placement hole 4 is 5-8 mm.

[0032] The hollow rectangular size of the arc shell 5 with a rectangular cross section is 3 mm×2 mm, and is used to fix the metal wire connected to the anode.

[0033] The anode placement hole 4 enables the anode material to fully contact with the hydrogen-charging electrolyte.

[0034] The upper disc 1, the lower disc 2, the arc shell 5 and the support column 6 are all made of acrylic material.

[0035] Specifically, refer to Figure 1 , is a schematic diagram of the structure of an embodiment of a simple electrochemical hydrogen charging device for metal materials of the utility model. The cathode of the constant current hydrogen charging instrument clamps the sample and extends it into the hydrogen charging electrolyte from the sample inlet 2. The metal wire (commonly used Cu wire) is passed through six arc shells 5 in sequence and then connected end to end to form a metal wire coil. The anode material contacts the metal wire through the anode placement hole 4, so that the anode is evenly distributed in space around the sample. The anode end of the constant current hydrogen charging instrument is connected to the metal wire coil, thereby achieving uniformity of electrochemical hydrogen charging.

[0036] Reference Figure 2 , is a schematic diagram of an electrochemical hydrogen charging support, comprising an upper disc 1, a lower disc 2, six arc shells 5 with rectangular cross sections and a support column 6, a sample inlet hole 3 is provided at the center of the upper disc, six anode placement holes 4 are provided with the sample inlet hole 3 as the center, six arc shells 5 with rectangular cross sections are provided above the upper disc 1 to fit closely therewith, and the upper disc 1 and the lower disc 2 are connected by a support column 6;

[0037] The sample size should conform to the size of the sample entry hole 3, and the anode material can also be replaced through the anode placement hole 4; the arc shell 5 is used to fix the metal wire, avoiding the problem of warping due to the light weight of the anode when clamping the metal wire.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by ... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A simple electrochemical hydrogen charging device for metal materials, comprising: It includes a constant current hydrogen charging instrument and an electrochemical hydrogen charging bracket; The constant current hydrogen charging instrument is connected to two positive and negative electrode wires with clamps; The electrochemical hydrogen charging support is composed of an upper disc (1), a lower disc (2), six arc shells (5) each having a rectangular cross section, and a support column (6); a sample inlet hole (3) is provided at the center of the upper disc (1); six anode placement holes (4) are provided on the upper disc (1) and are evenly spaced around the sample inlet hole (3); six arc shells (5) each having a rectangular cross section are tightly fitted on the upper disc (1); the arc shells (5) and the anode placement holes (4) are connected to each other; and the support column (6) is used to connect the upper disc (1) and the lower disc (2).

2. A simple electrochemical hydrogen charging device for metal materials according to claim 1, characterized in that , the current on the constant current hydrogen charging instrument does not exceed 2A.

3. A simple electrochemical hydrogen charging device for metal materials according to claim 1, characterized in that The support column (6) is tightly connected to the upper disc (1) and the lower disc (2). The support column (6) is in the shape of a quadrangular prism with a square bottom surface and a height of 80 to 170 mm.

4. A simple electrochemical hydrogen charging device for metal materials according to claim 1, characterized in that The thickness of the upper disc (1), the lower disc (2), and the support column (6) are all 2 to 6 mm.

5. A simple electrochemical hydrogen charging device for metal materials according to claim 1, characterized in that The diameter of the sample inlet hole (3) is 10-15 mm, and the diameter of the anode placement hole (4) is 5-8 mm.

6. A simple electrochemical hydrogen charging device for metal materials according to claim 1, characterized in that The hollow rectangular size of the arc shell (5) with a rectangular cross section is 3 mm×2 mm, and is used to fix the metal wire connected to the anode.

7. A simple electrochemical hydrogen charging device for metal materials according to claim 1, characterized in that The anode placement hole (4) enables the anode material to fully contact with the hydrogen-charged electrolyte.

8. A simple electrochemical hydrogen charging device for metal materials according to claim 1, characterized in that The upper disc (1), the lower disc (2), the arc shell (5), and the support column (6) are all made of acrylic material.

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