Hydrogen real-time lossless quantitative monitoring device of micro-gap structure

Abstract

The invention discloses a hydrogen real-time lossless quantitative monitoring device with a micro-gap structure. The hydrogen real-time lossless quantitative monitoring device comprises a hydrogen storage material, a metal material, a high polymer material, a metal lower shell, a metal upper shell, a flexible electrode plate, a through-wall sealing socket, a lead and a micro-gap hydrogen sensor, a plurality of micro-gap hydrogen sensors and a plurality of flexible electrode plates are respectively arranged in a gap between the metal material and the hydrogen storage material, a gap between the metal material and the high polymer material, and a gap between the metal lower shell and the high polymer material; the lead is arranged between the gaps, one end of the lead is electrically connected with the flexible electrode plates, and the second end of the lead penetrates through the through-wall sealing socket and then is connected with external equipment. Under the condition that the internal atmosphere and the structure of the structure body are not damaged, the microgap hydrogen sensors and the flexible electrode plates are arranged between layers in the structure body, signals are led out through the lead wires, and real-time lossless quantitative hydrogen monitoring of the multi-layer microgap structure is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of nondestructive monitoring, and in particular to a real-time nondestructive quantitative monitoring device for hydrogen with a micro-gap structure. Background Art

[0002] The water content of polymer materials is relatively high. For example, the saturated water content of silicone foam, epoxy resin, foam plastic, etc. can reach several percent, and a certain amount of water will be released during storage. Some hydrogen storage materials have high melting points and are thermally stable. Hydrogen storage materials such as salt hydrides are mostly colorless crystals, generally gray due to impurities, insoluble in benzene and toluene, soluble in ether, and have the dual advantages of high hydrogen density and low mass density. They have attracted much attention as potential solid hydrogen storage materials and can even be used directly as rocket propellants. Hydrogen storage materials easily react with water to produce hydrogen, and the hydrogen production rate is relatively high. The hydrogen stored can provide hydrogen for internal combustion engines or fuel cells. Because hydrogen storage materials have high reactivity when exposed to water, and release hydrogen and heat at the same time, it is difficult to store and use them like conventional materials.

[0003] Metals, hydrogen storage materials and polymer mixed materials need to be stored and transported in specific storage containers for long-term storage. The changes in moisture and hydrogen in the storage containers have a significant impact on the corrosion of metal materials. The sources of moisture in the container are mainly composed of leaked and infiltrated moisture, moisture adsorbed by the material itself and moisture in free space. These moistures easily react with the energy of hydrogen storage materials to generate hydrogen, which in turn reacts with metal materials to cause corrosion of metal materials. In addition, moisture will also increase the corrosion rate of metal materials. Hydrogen has the properties of being odorless, tasteless and flammable, and it is difficult for people to directly detect it from their senses. Both pure hydrogen and its mixture with hydrogen are highly explosive and have certain dangers. Therefore, hydrogen is a factor that needs to be focused on during the storage and transportation of mixed materials. Real-time, quantitative and non-destructive measurement of the hydrogen content in the container is one of the important indicators for evaluating the reliability of container storage.

[0004] At present, most hydrogen measurements are obtained through hydrogen sensors and gas sampling. Among them, the gas sampling method has certain difficulties for real-time measurement, and too many sampling times will destroy the product atmosphere composition. Hydrogen sensors are mainly classified according to the measurement principle: electrochemical type, semiconductor type, contact combustion type and thermal conductivity type. The representative manufacturers and models of electrochemical hydrogen sensors are: 3HYE and 3HYT hydrogen sensors from CITY in the UK, 4H2-40000 (outer dimensions φ25mm×80mm) hydrogen sensors from SOLIDSENSE in Germany, etc. Traditional hydrogen sensors can achieve real-time measurement of hydrogen, but generally need to be placed inside the product for measurement. Due to the large size and volume of traditional electrochemical hydrogen sensors (generally φ25×50mm or more, the wire diameter is φ6mm), a lot of supplementary processing is required to ensure installation, which will cause damage to the product structure, making it difficult to meet the engineering application requirements in small space scenarios, and unable to achieve real-time and non-destructive monitoring of hydrogen in each layer of multi-layer micro-gaps.

[0005] Therefore, it is necessary to develop a real-time nondestructive quantitative monitoring device for hydrogen with a micro-gap structure to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to design a real-time non-destructive quantitative monitoring device for hydrogen with a micro-gap structure in order to solve the above problems.

[0007] The present invention achieves the above-mentioned purpose through the following technical solutions: A real-time nondestructive quantitative monitoring device for hydrogen with a micro-gap structure, comprising: at least one hydrogen storage material; At least two metal materials; each hydrogen storage material is coated by at least two metal materials, and a communicating gap is provided between the metal material and the hydrogen storage material and between at least two metal materials; At least two polymer materials; at least two metal materials are coated by at least two polymer materials, and a communicating gap is provided between the metal material and the polymer material and between the at least two polymer materials; The metal lower shell is formed into a barrel-shaped structure with one end open; at least two polymer materials are installed in the metal lower shell; a gap is set between the metal lower shell and the polymer material; Metal upper shell; the metal upper shell cover is arranged at the opening of the metal lower shell; a gap is arranged between the metal upper shell and the polymer material; Multiple micro-gap hydrogen sensors; Multiple flexible electrode plates; each micro-gap hydrogen sensor is electrically connected to a flexible electrode plate, and the multiple micro-gap hydrogen sensors and the multiple flexible electrode plates are respectively installed in the gap between the metal material and the hydrogen storage material, in the gap between the metal material and the polymer material, and in the gap between the metal lower shell and the polymer material; A through-wall sealed socket; an opening is provided on the through-wall sealed socket, and the through-wall sealed socket is installed in the opening; Lead wires are arranged between the gaps, one end of the lead wires are electrically connected to a plurality of flexible electrode plates respectively, and the second end of the lead wires passes through a through-wall sealed socket and is connected to an external device.

[0008] The beneficial effects of the present invention are: The present invention achieves real-time, nondestructive and quantitative monitoring of hydrogen in a multi-layer microgap structure by arranging microgap hydrogen sensors and flexible electrode plates between internal layers without destroying the internal atmosphere and structure of the structure, and leading out signals using leads. Compared with traditional electrochemical hydrogen sensor testing methods and gas sampling methods, the present invention can perform real-time, nondestructive and quantitative monitoring of hydrogen in each layer of a multi-layer microgap product, and can provide support for accurately grasping the changing laws of hydrogen in each internal layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of a container containing metal materials and hydrogen storage materials; Figure 2 Schematic diagram of the sealing structure of the built-in micro-gap hydrogen sensor.

[0010] Legend: 1-hydrogen storage material; 2-first metal material; 3-first polymer material; 4-metal lower shell; 5-bolt assembly; 6-metal upper shell; 7-first sealing ring; 8-second metal material; 9-second polymer material; 10-screw assembly; 11-wall sealing socket; 12-lead; 13-second sealing ring. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0012] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0014] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the product of the invention is usually placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0015] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0016] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms such as "setting" and "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings.

[0018] like Figure 1 As shown, the original structure of the closed container including metal material, polymer material and hydrogen storage material 1.

[0019] like Figure 2 As shown, a real-time non-destructive quantitative monitoring device for hydrogen with a micro-gap structure comprises: A hydrogen storage material 1, specifically a metal titanium hydrogen storage structure; The first metal material 2 is specifically an aluminum alloy, and the second metal material 8 is specifically a magnesium alloy; each hydrogen storage material 1 is coated by the first metal material 2 and the second metal material 8, and a communicating gap is provided between the hydrogen storage material 1 and the first metal material 2 and the second metal material 8, and between the first metal material 2 and the second metal material 8; The first polymer material 3 is specifically silicone rubber, and the second polymer material 9 is specifically silicone rubber; the first metal material 2 and the second metal material 8 are coated by the first polymer material 3 and the second polymer material 9, and a communicating gap is provided between the first metal material 2 and the first polymer material 3, between the second metal material 8 and the second polymer material 9, and between the first polymer material 3 and the second polymer material 9; The metal lower shell 4 (made of stainless steel) is formed into a barrel-shaped structure with one end open; the first polymer material 3 and the second polymer material 9 are installed in the metal lower shell 4; gaps are provided between the metal lower shell 4 and the first polymer material 3 and the second polymer material 9; The metal upper shell 6 (made of stainless steel) is provided to cover the opening of the metal lower shell 4; a gap is provided between the metal upper shell 6 and the first polymer material 3; Multiple micro-gap hydrogen sensors; micro-gap hydrogen sensors are micro-gas-sensitive thin film sensors used to measure the hydrogen concentration in a tiny gap space, with a size no greater than 1 mm (length) × 1 mm (width) × 0.2 mm (thickness); Multiple flexible electrode plates, mainly FPC connecting wires; each micro-gap hydrogen sensor is electrically connected to a flexible electrode plate, and multiple micro-gap hydrogen sensors and multiple flexible electrode plates are respectively installed in the gaps between the first metal material 2, the second metal material 8 and the hydrogen storage material 1, between the first metal material 2 and the first polymer material 3, between the second metal material 8 and the second polymer material 9, and between the metal lower shell 4 and the first polymer material 3 and the second polymer material 9; the flexible electrode plates are installed by laying; A wall-penetrating sealed socket 11; an opening is provided on the wall-penetrating sealed socket 11, and the wall-penetrating sealed socket 11 is installed in the opening; Lead wire 12: Lead wire 12 is arranged between the gaps, one end of lead wire 12 is electrically connected to a plurality of flexible electrode plates respectively, and the second end of lead wire 12 is connected to an external device after passing through a through-wall sealed socket 11. The external device includes an external test device and a power supply. Lead wire 12 is used to realize the connection between the flexible electrode plate and the signal acquisition and processing system (a system integrating functions such as signal acquisition, transmission, processing, analysis and storage) and the power supply. Through-wall sealed socket 11 is used to realize the transfer of hydrogen sensor signals of each internal micro-gap layer, and at the same time, the overall sealing body structure is sealed.

[0020] In some embodiments, the hydrogen sensor is less than 0.5 mm thick.

[0021] In some embodiments, the thickness of the flexible electrode plate is less than 0.2 mm.

[0022] In some embodiments, the wall-penetrating sealing socket 11 is formed into a cylindrical shape, and the diameter of the wall-penetrating sealing socket 11 is less than 15 mm, the height is less than 8 mm, and the volume is less than 2 ml.

[0023] In some embodiments, a first annular structure protruding outward is provided at the opening of the metal lower shell 4, and the first annular structure is connected to the metal upper shell 6 via a plurality of bolt assemblies 5. The metal lower shell 4 and the metal upper shell 6 are fixed by the bolt assemblies 5. The bolt assemblies 5 include bolts and washers.

[0024] In some embodiments, a first sealing ring 7 is disposed between the first annular structure and the metal upper shell 6. The first sealing ring 7 is used to achieve sealing between the metal upper shell 6 and the metal lower shell 4.

[0025] In some embodiments, a second annular structure protruding outward is formed on the side wall of the through-wall sealed socket 11, and the second annular structure is connected to the metal upper shell 6 by a plurality of screw assemblies 10. The through-wall sealed socket 11 is fixed to the metal upper shell 6 by the screw assemblies 10. The screw assemblies 10 include screws and washers.

[0026] In some embodiments, a second sealing ring 13 is disposed between the first annular structure and the metal upper shell 6. The second sealing ring 13 is used to achieve sealing between the wall-penetrating sealing socket 11 and the sealing structure.

[0027] from Figure 1 and Figure 2 It can be seen that in order to achieve real-time, non-destructive and quantitative measurement of the hydrogen atmosphere inside the sealed container structure, the method only adds a flexible circuit board connecting line between layers and a wall-penetrating sealing socket 11, without causing damage to the internal atmosphere and internal structure of the sealed structure, thus achieving non-destructive measurement.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A real-time non-destructive quantitative monitoring device for hydrogen with a micro-gap structure, characterized in that: include: at least one hydrogen storage material; At least two metal materials; Each hydrogen storage material is coated by at least two metal materials, and a communicating gap is provided between the metal material and the hydrogen storage material and between at least two metal materials; At least two polymer materials; At least two metal materials are coated by at least two polymer materials, and a communicating gap is provided between the metal material and the polymer material and between the at least two polymer materials; The metal lower shell is formed into a barrel-shaped structure with one end open; at least two polymer materials are installed in the metal lower shell; a gap is set between the metal lower shell and the polymer material; Metal upper shell; the metal upper shell cover is arranged at the opening of the metal lower shell; a gap is arranged between the metal upper shell and the polymer material; Multiple micro-gap hydrogen sensors; Multiple flexible electrode plates; each micro-gap hydrogen sensor is electrically connected to a flexible electrode plate, and the multiple micro-gap hydrogen sensors and the multiple flexible electrode plates are respectively installed in the gap between the metal material and the hydrogen storage material, in the gap between the metal material and the polymer material, and in the gap between the metal lower shell and the polymer material; A through-wall sealed socket; an opening is provided on the through-wall sealed socket, and the through-wall sealed socket is installed in the opening; Lead wires are arranged between the gaps, one end of the lead wires are electrically connected to a plurality of flexible electrode plates respectively, and the second end of the lead wires passes through a through-wall sealed socket and is connected to an external device.

2. The real-time nondestructive quantitative monitoring device for hydrogen with a micro-gap structure according to claim 1, characterized in that: The thickness of the hydrogen sensor is less than 0.5mm.

3. The real-time nondestructive quantitative monitoring device for hydrogen with a micro-gap structure according to claim 1, characterized in that: The thickness of the flexible electrode plate is less than 0.2 mm.

4. The real-time nondestructive quantitative monitoring device for hydrogen with a micro-gap structure according to claim 1, characterized in that: The through-wall sealing socket is formed into a cylindrical shape, and the diameter of the through-wall sealing socket is less than 15 mm and the height is less than 8 mm.

5. The real-time nondestructive quantitative monitoring device for hydrogen with a micro-gap structure according to claim 1, characterized in that: A first annular structure protruding outward is arranged at the opening of the metal lower shell, and the first annular structure is connected to the metal upper shell by a plurality of bolt assemblies.

6. The real-time nondestructive quantitative monitoring device for hydrogen with a micro-gap structure according to claim 5, characterized in that: A first sealing ring is arranged between the first annular structure and the metal upper shell.

7. The real-time nondestructive quantitative monitoring device for hydrogen with a micro-gap structure according to claim 1, characterized in that: A second annular structure protruding outward is formed on the side wall of the through-wall sealing socket, and the second annular structure is connected to the metal upper shell through a plurality of screw assemblies.

8. The real-time nondestructive quantitative monitoring device for hydrogen with a micro-gap structure according to claim 7, characterized in that: A second sealing ring is arranged between the first annular structure and the metal upper shell.

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