CN111043412B - Hydrogen absorption ring and hydrogen absorption pipeline - Google Patents

Hydrogen absorption ring and hydrogen absorption pipeline Download PDF

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Publication number
CN111043412B
CN111043412B CN201911399736.XA CN201911399736A CN111043412B CN 111043412 B CN111043412 B CN 111043412B CN 201911399736 A CN201911399736 A CN 201911399736A CN 111043412 B CN111043412 B CN 111043412B
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hydrogen
gas pipe
ring
pipe
connecting piece
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CN201911399736.XA
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CN111043412A (en
Inventor
杨福源
王天泽
胡松
党健
江亚阳
***
李建秋
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Tsinghua University
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Tsinghua University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/0005—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes
    • C01B3/001—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes characterised by the uptaking medium; Treatment thereof
    • C01B3/0031—Intermetallic compounds; Metal alloys; Treatment thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/0005—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes
    • C01B3/001—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes characterised by the uptaking medium; Treatment thereof
    • C01B3/0031—Intermetallic compounds; Metal alloys; Treatment thereof
    • C01B3/0036—Intermetallic compounds; Metal alloys; Treatment thereof only containing iron and titanium; Treatment thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/0005—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes
    • C01B3/001—Reversible uptake of hydrogen by an appropriate medium, i.e. based on physical or chemical sorption phenomena or on reversible chemical reactions, e.g. for hydrogen storage purposes ; Reversible gettering of hydrogen; Reversible uptake of hydrogen by electrodes characterised by the uptaking medium; Treatment thereof
    • C01B3/0084—Solid storage mediums characterised by their shape, e.g. pellets, sintered shaped bodies, sheets, porous compacts, spongy metals, hollow particles, solids with cavities, layered solids
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The application relates to a hydrogen absorption ring and a hydrogen absorption pipeline. The hydrogen absorption ring is used for being sleeved on the outer surface of the connecting piece or the first gas pipe with smaller diameter, which is close to the second gas pipe. The first gas pipe with the second gas pipe or the junction of connecting piece takes place hydrogen and leaks, hydrogen flows along the inner wall of first gas pipe. The hydrogen storage material absorbs the hydrogen in the molecules of the hydrogen storage material, so that the concentration of the hydrogen in the air is reduced, and the safety of the hydrogen absorption pipeline is improved.

Description

Hydrogen absorption ring and hydrogen absorption pipeline
Technical Field
The application relates to the technical field of new energy, in particular to a hydrogen absorption ring and a hydrogen absorption pipeline.
Background
Energy exhaustion and environmental pollution caused by fossil energy consumption are becoming serious, and large-scale development and utilization of renewable energy are imperative. Although renewable energy resources are abundant and widely distributed, the renewable energy resources fluctuate violently and are periodically influenced by natural environments. Hydrogen is an effective way of storing energy: the electric energy is converted into chemical energy to be stored in the hydrogen during the power generation peak period of the renewable energy source, and the energy carried by the hydrogen is converted into the electric energy again for use through the fuel cell during the power utilization peak period. Therefore, the technologies of hydrogen preparation, storage, transportation and the like are regarded by relevant researchers.
The hydrogen is a very flammable and explosive gas, and when the volume fraction of the hydrogen in the air exceeds 4-75%, the hydrogen meets a fire source to cause explosion. Therefore, how to improve the safety of the hydrogen absorption pipeline is an urgent problem to be solved.
Disclosure of Invention
In view of the above, it is necessary to provide a hydrogen absorption ring and a hydrogen absorption pipe in order to easily detect the magnitude of the film stress.
A hydrogen absorption ring is used for absorbing hydrogen leaked from the hydrogen absorption pipeline. The hydrogen absorption pipeline comprises a first gas pipe and a second gas pipe or a connecting piece connected with the first gas pipe. The diameter of the first air conveying pipe is smaller than that of the second air conveying pipe or the connecting piece. The hydrogen absorption ring comprises a ring body. The ring body is used for being sleeved on the outer surface of the first gas transmission pipe, which is close to the second gas transmission pipe or the connecting piece. The ring body is made of a hydrogen storage material.
In one embodiment, the hydrogen storage material is a rare earth aluminum alloy or a ferrotitanium-based alloy.
In one embodiment, the rare earth aluminum alloy comprises an Ln-Ni-Al alloy.
In one embodiment, the ring body is a cylindrical structure, and the cylindrical structure comprises a first surface, and the first surface is provided with a groove.
In one embodiment, the cylindrical structure comprises a central axis, the first surface is perpendicular to the central axis, and the groove is a ring-shaped structure which is axisymmetric with respect to the central axis.
In one embodiment, the groove is a plurality of grooves, and the maximum diameter of the plurality of grooves is different.
In one embodiment, the maximum diameter of the recess decreases in the direction of extension of the central axis and away from the first surface.
In one embodiment, the cross-sectional shape of the groove is circular.
In one embodiment, the groove is a plurality of grooves, and the grooves are distributed in a circular matrix.
In one embodiment, the barrel structure includes a second surface. The second surface is disposed opposite the first surface. The ring body is provided with an opening. The opening penetrates from the first surface to the second surface.
A hydrogen absorption line comprising the hydrogen absorption ring according to any one of the above embodiments. The hydrogen absorption pipeline comprises a first gas pipe and a second gas pipe or a connecting piece connected with the first gas pipe. The diameter of the first air conveying pipe is smaller than that of the second air conveying pipe or the connecting piece. The hydrogen absorption ring is sleeved on the outer surface of the first gas pipe, which is close to the second gas pipe or the connecting piece.
The hydrogen absorption ring provided by the embodiment of the application is used for being sleeved on the first gas pipe with a smaller diameter and is close to the second gas pipe or the outer surface of the connecting piece. The first gas pipe with the second gas pipe or the junction of connecting piece takes place hydrogen and leaks, hydrogen flows along the inner wall of first gas pipe. The hydrogen storage material absorbs the hydrogen in the molecules of the hydrogen storage material, so that the concentration of the hydrogen in the air is reduced, and the safety of the hydrogen absorption pipeline is improved.
Drawings
FIG. 1 is a schematic structural view of the hydrogen-absorbing ring provided in an embodiment of the present application;
FIG. 2 is a schematic structural view of the hydrogen-absorbing ring provided in another embodiment of the present application;
FIG. 3 is a schematic structural view of section A-A of the hydrogen-absorbing ring provided in an embodiment of the present application;
FIG. 4 is a schematic structural view of the hydrogen-absorbing ring provided in another embodiment of the present application;
FIG. 5 is a schematic structural view of the hydrogen-absorbing ring provided in another embodiment of the present application;
FIG. 6 is a schematic structural view of the hydrogen-absorbing ring provided in another embodiment of the present application;
FIG. 7 is a schematic structural view of the hydrogen-absorbing ring provided in another embodiment of the present application;
FIG. 8 is a schematic structural view of the hydrogen absorption line provided in an embodiment of the present application;
fig. 9 is a schematic structural view of the hydrogen absorption line provided in another embodiment of the present application.
Reference numerals:
hydrogen absorption ring 10
Ring body 20
First surface 210
Groove 220
Center shaft 230
Second surface 240
Opening 250
Hydrogen absorption pipeline 100
The first air delivery pipe 30
The second air delivery pipe 40
Connecting piece 50
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and those skilled in the art will be able to make similar modifications without departing from the spirit of the application and it is therefore not intended to be limited to the embodiments disclosed below.
The numbering of the components as such, e.g., "first", "second", etc., is used herein for the purpose of describing the objects only, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, the present embodiment provides a hydrogen absorption ring 10 for absorbing hydrogen leaked from the hydrogen absorption pipeline 100. The hydrogen absorption pipeline 100 includes a first gas pipe 30 and a second gas pipe 40 or a connector 50 connected to the first gas pipe 30. The diameter of the first air delivery conduit 30 is less than the diameter of the second air delivery conduit 40 or the connector 50. The hydrogen absorption ring 10 includes a ring body 20. The ring body 20 is used for being sleeved on the outer surface of the first air conveying pipe 30 close to the second air conveying pipe 40 or the connecting piece 50. The ring body 20 is made of a hydrogen storage material.
The hydrogen absorption ring 10 provided by the embodiment of the application is used for sleeving the first gas pipe 30 with a smaller diameter close to the second gas pipe 40 or the outer surface of the connecting piece 50. The joint of the first gas pipe 30 and the second gas pipe 40 or the connecting piece 50 generates hydrogen leakage, and the hydrogen flows out along the inner wall of the first gas pipe 30. The hydrogen storage material adsorbs the hydrogen gas in the molecules of the hydrogen storage material, so that the concentration of the hydrogen gas in the air is reduced, and the safety of the hydrogen absorption pipeline 100 is improved.
In one embodiment, the hydrogen storage material is a rare earth aluminum alloy or a ferrotitanium-based alloy. The leaked hydrogen is contacted with rare earth aluminum alloy or ferrotitanium alloy. The leaked hydrogen is decomposed into hydrogen atoms on the surface of the rare earth aluminum alloy or the ferrotitanium alloy. Then hydrogen atoms are diffused into the rare earth aluminum alloy or the ferrotitanium alloy until the hydrogen atoms react with the rare earth aluminum alloy or the ferrotitanium alloy to generate metal hydride. At this time, hydrogen is stored in the crystallization point of the rare earth aluminum alloy or the ferrotitanium alloy in an atomic state. The hydrogen storage material adsorbs the hydrogen gas in the gaps between the tetrahedron and the octahedron of the hydrogen storage material, so that the concentration of the hydrogen gas in the air is reduced, and the safety of the hydrogen absorption pipeline 100 is improved.
The hydrogen storage material can also be other nano-pore adsorption materials and the like.
In one embodiment, the rare earth aluminum alloy comprises an Ln-Ni-Al alloy. Tetrahedral and octahedral gaps exist in the Ln-Ni-Al alloy. When hydrogen gas is decomposed into hydrogen atoms on the surface of the Ln-Ni-Al alloy, hydrogen is stored in tetrahedral or octahedral gaps in an atomic state.
The form of the pipeline joint of the hydrogen absorption pipeline 100 includes internal and external thread connection or ferrule connection.
When the pipe joint is in the form of internal and external threaded connection, the diameter of the first air pipe 30 is smaller than that of the second air pipe 40. One end of the first air delivery pipe 30 is provided with external threads, and the second air delivery pipe 40 is provided with internal threads. The first air delivery pipe 30 and the second air delivery pipe 40 are connected by internal and external threads. The hydrogen absorption ring 10 is sleeved on the outer surface of the first gas transmission pipe 30, and the hydrogen absorption ring 10 is attached to the port of the second gas transmission pipe 40.
When the pipeline joint is in the form of a ferrule connection, the first air pipe 30 and the second air pipe 40 are connected through the connecting piece 50. The diameter of the first air delivery pipe 30 and the diameter of the second air delivery pipe 40 are both smaller than the inner diameter of the connecting piece 50. The connecting member 50 is sleeved at the ports of the first air pipe 30 and the second air pipe 40. The hydrogen absorption ring 10 is sleeved on the outer surface of the first gas transmission pipe 30, and the hydrogen absorption ring 10 is attached to one end of the connecting piece 50. The hydrogen absorption ring 10 is also used for being sleeved on the outer surface of the second gas transmission pipe 40, and the hydrogen absorption ring 10 is attached to the other end of the connecting piece 50.
Referring also to fig. 2, in one embodiment, the ring 20 is a cylindrical structure. The barrel structure includes a first surface 210. The first surface 210 is provided with a groove 220. The grooves 220 serve to increase the contact area and increase the rate at which hydrogen is absorbed by the ring body 20.
When the pipe joint is in the form of an internal and external threaded connection, the first surface 210 is attached to the end of the second air pipe 40 close to the first air pipe 40.
When the line connection is in the form of a bayonet connection, the first surface 210 of one of the hydrogen-absorbing rings 10 abuts one end of the connector 50. The first surface 210 of the other hydrogen absorption ring 10 is attached to the other end of the connection member 50.
Referring also to fig. 3, in one embodiment, the barrel structure includes a central shaft 230. The first surface 210 is perpendicular to the central axis 230. The groove 220 has an annular structure. The ring-shaped structure is axisymmetric about the central axis 230. Under the condition that the diameters of the inner wall and the outer wall of the cylinder structure are not changed, hydrogen enters the annular structure, the contact area of the hydrogen and the hydrogen storage material is increased, and the absorption efficiency of the hydrogen absorption ring 10 is improved.
In one embodiment, the groove 220 is plural. The maximum diameters of the plurality of grooves 220 are different, and the contact area of the hydrogen gas and the hydrogen storage material is further increased.
Referring also to fig. 4, in one embodiment, the maximum diameter of the groove 220 decreases in the extending direction of the central axis 230 and away from the first surface 210. The larger the distance from the first surface 210, the smaller the maximum diameter of the groove 220. In the case of a certain hydrogen flow rate, the cross-sectional area of the groove 220 is smaller and the hydrogen pressure is larger as the distance from the first surface 210 is smaller. The hydrogen pressure increases, increasing the rate at which hydrogen is absorbed by the ring 20.
Referring also to fig. 5, in one embodiment, the cross-sectional shape of the groove 220 is circular. The groove 220 has a cylindrical structure. The surface area of the cylinder is larger than that of other shapes under the same volume. The cylindrical structure raises the surface of the ring body 20. At the same time, the contact area of the hydrogen and the cylindrical structure is increased. The amount of the hydrogen gas participating in the adsorption reaction is increased, the contact area of the hydrogen gas with the hydrogen storage material is increased, and the absorption efficiency of the hydrogen absorption ring 10 is improved.
In one embodiment, the number of the grooves 220 is multiple, and the grooves 220 are distributed in a circular matrix, so that the surface area of the hydrogen gas contacting the hydrogen absorption ring 10 is increased, the stress on the hydrogen absorption ring 10 is uniform, and the strength of the hydrogen absorption ring 10 is improved.
Generally, the installation process of the hydrogen ring 10 is as follows: the hydrogen ring 10 is first installed on the outer surface of the first gas pipe 30. And then the first air delivery pipe 30 is connected with the second air delivery pipe 40 or the connecting piece 50.
Referring also to fig. 6, in one embodiment, the barrel structure includes a second surface 240. The second surface 240 is disposed opposite to the first surface 210. The ring body 20 defines an opening 250. The opening 250 extends through the first surface 210 to the second surface 240. The width of the opening 250 is not too large, and 360-degree adsorption of the annular area is guaranteed.
In one embodiment, the width of the opening 250 is 1/5 of the inner diameter of the ring body 20.
The opening 250 allows the hydrogen absorption ring 10 to be mounted on the outer surface of the first gas pipe 30 after the first gas pipe 30 is connected to the second gas pipe 40 or the connecting member 50.
Referring also to fig. 7, in one embodiment, the inner wall of the cylinder structure is also provided with the groove 220. The grooves 220 are along the surface of the central shaft 230. The first gas pipe 30 and the second gas pipe 40 or the connecting piece 50 connected with the first gas pipe 30 are connected to generate hydrogen leakage, and the hydrogen flows out along the inner wall of the first gas pipe 30. The hydrogen gas flows into the groove 220 formed on the inner wall of the cylinder structure along the outer surface of the first gas transmission pipe 30.
The hydrogen absorption ring 10 is mainly applied to a joint portion in the hydrogen absorption line 100.
Referring to fig. 8 and 9 together, an embodiment of the present application provides a hydrogen absorption line 100 including the hydrogen absorption ring 10 according to any one of the above embodiments. The hydrogen absorption pipeline 100 includes a first gas pipe 30 and a second gas pipe 40 or a connector 50 connected to the first gas pipe 30. The diameter of the first air delivery conduit 30 is less than the diameter of the second air delivery conduit 40 or the connector 50. The hydrogen absorption ring 10 is sleeved on the outer surface of the first gas pipe 30 close to the second gas pipe 40 or the connecting piece 50.
The form of the pipeline joint of the hydrogen absorption pipeline 100 includes internal and external thread connection or ferrule connection.
When the pipe joint is in the form of internal and external threaded connection, the diameter of the first air pipe 30 is smaller than that of the second air pipe 40. One end of the first air delivery pipe 30 is provided with external threads, and the second air delivery pipe 40 is provided with internal threads. The first air delivery pipe 30 and the second air delivery pipe 40 are connected by internal and external threads. The hydrogen absorption ring 10 is sleeved on the outer surface of the first gas transmission pipe 30, and the hydrogen absorption ring 10 is attached to the port of the second gas transmission pipe 40.
When the connection part of the first gas pipe 30 and the second gas pipe 40 has manufacturing defects, aging, vibration cracking or looseness, hydrogen gas leaks from the connection part of the internal thread and the external thread. The hydrogen absorption ring 10 is made of a hydrogen storage material. The leaked hydrogen gas is decomposed into hydrogen atoms at the surface of the hydrogen storage material. The hydrogen atoms then diffuse into the interior of the hydrogen storage material until the hydrogen atoms react with the hydrogen storage material to form a metal hydride. At this time, hydrogen is stored in an atomic state in the crystal of the hydrogen storage material. The hydrogen storage material adsorbs the hydrogen gas in the gaps between the tetrahedron and the octahedron of the hydrogen storage material, so that the leaked hydrogen gas is prevented from entering an external space, and the safety of the hydrogen absorption pipeline 100 is improved.
When the pipeline joint is in the form of a ferrule connection, the first air pipe 30 and the second air pipe 40 are connected through the connecting piece 50. The diameter of the first air delivery pipe 30 and the diameter of the second air delivery pipe 40 are both smaller than the inner diameter of the connecting piece 50. The connecting member 50 is sleeved at the ports of the first air pipe 30 and the second air pipe 40. The hydrogen absorption ring 10 is sleeved on the outer surface of the first gas transmission pipe 30, and the hydrogen absorption ring 10 is attached to one end of the connecting piece 50. The hydrogen absorption ring 10 is also used for being sleeved on the outer surface of the second gas transmission pipe 40, and the hydrogen absorption ring 10 is attached to the other end of the connecting piece 50.
When the first gas pipe 30, the second gas pipe 40 or the connecting part 50 has manufacturing defects, aging, vibration cracking or looseness, hydrogen gas leaks from the inner wall of the connecting part 50. The hydrogen absorption ring 10 is made of a hydrogen storage material. The leaked hydrogen gas is decomposed into hydrogen atoms at the surface of the hydrogen storage material. The hydrogen atoms then diffuse into the interior of the hydrogen storage material until the hydrogen atoms react with the hydrogen storage material to form a metal hydride. At this time, hydrogen is stored in an atomic state in the crystal of the hydrogen storage material. The hydrogen storage material adsorbs the hydrogen gas in the gaps between the tetrahedron and the octahedron of the hydrogen storage material, so that the leaked hydrogen gas is prevented from entering an external space, and the safety of the hydrogen absorption pipeline 100 is improved.
In one embodiment, the hydrogen absorption line 100 further includes other sealing portions. The hydrogen absorbing ring 10 may be provided in cooperation with a sealing member. In the case of a runaway sealing member, the hydrogen absorption ring 10 actively absorbs the leaked hydrogen, reducing the risk factor of the hydrogen absorption pipeline 10.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-described examples merely represent several embodiments of the present application and are not to be construed as limiting the scope of the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (11)

1. The utility model provides a inhale hydrogen ring for absorb the hydrogen that inhales hydrogen pipeline (100) leaked, inhale hydrogen pipeline (100) including first gas pipe (30) and with second gas pipe (40) or connecting piece (50) that first gas pipe (30) are connected, the diameter of first gas pipe (30) is less than second gas pipe (40) or the diameter of connecting piece (50), its characterized in that includes:
the ring body (20) is used for being sleeved on the outer surface of the first gas conveying pipe (30), the ring body (20) is used for being attached to the end face of the second gas conveying pipe (40) or the outer end face of the connecting piece (50), and the ring body (20) is made of hydrogen storage materials.
2. The hydrogen-absorbing ring of claim 1, wherein the hydrogen storage material is a rare earth aluminum alloy or a ferrotitanium alloy.
3. The hydrogen-absorbing ring of claim 2, wherein the rare earth aluminum alloy comprises an Ln-Ni-Al alloy.
4. The hydrogen-absorbing ring as recited in claim 1, characterized in that the ring body (20) is a cylindrical structure, the cylindrical structure comprising a first surface (210), the first surface (210) being provided with a groove (220).
5. The hydrogen-absorbing ring of claim 4, wherein the cylinder structure comprises a central axis (230), the first surface (210) is perpendicular to the central axis (230), and the groove (220) is an annular structure that is axisymmetric about the central axis (230).
6. The hydrogen-absorbing ring as claimed in claim 5, wherein the grooves (220) are plural, and the maximum diameters of the plural grooves (220) are different.
7. The hydrogen-absorbing ring according to claim 6, characterized in that the maximum diameter of the groove (220) decreases in the direction of extension of the central axis (230) and away from the first surface (210).
8. The hydrogen-absorbing ring as claimed in claim 4, wherein the cross-sectional shape of the groove (220) is circular.
9. The hydrogen-absorbing ring as claimed in claim 8, wherein the grooves (220) are plural, and the plural grooves (220) are distributed in a circular matrix.
10. The hydrogen-absorbing ring of claim 4, wherein the cylindrical structure includes a second surface (240), the second surface (240) being disposed opposite the first surface (210), the ring body (20) defining an opening (250), the opening (250) extending through the second surface (240) from the first surface (210).
11. A hydrogen absorption pipeline comprising the hydrogen absorption ring (10) as claimed in any one of claims 1 to 10, wherein the hydrogen absorption pipeline comprises a first gas pipe (30) and a second gas pipe (40) or a connecting piece (50) connected with the first gas pipe (30), the diameter of the first gas pipe (30) is smaller than that of the second gas pipe (40) or the connecting piece (50), the outer surface of the first gas pipe (30) is sleeved with the ring body (20), and the ring body (20) is used for being attached to the end surface of the second gas pipe (40) or the outer end surface of the connecting piece (50).
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