Closing device for hydrogen storage container with improved hydrogen brittleness resistance and hydrogen storage container comprising same

Abstract

The present invention relates to a sealing device for a hydrogen storage container for sealing and storing hydrogen, and more particularly, to a sealing device for a hydrogen storage container capable of safely discharging permeated hydrogen to the outside of the container while satisfying hydrogen brittleness resistance and mechanical strength standards. A closing device for a hydrogen storage container for improving hydrogen brittleness resistance according to an embodiment of the present invention is a closing device for a hydrogen storage container for sealing a storage cylinder for storing hydrogen, and comprises: a cover member for sealing an opening portion of the storage cylinder and supporting a hydrogen pressure filled into the storage cylinder; a brittleness blocking member provided in the cover member, the brittleness blocking member being in direct contact with the hydrogen gas filled into the storage cylinder, and blocking the hydrogen gas from permeating into the cover member due to the internal pressure of the storage cylinder; and a permeated hydrogen discharge hole penetrating through the cover member and communicating with the outside such that an external pressure lower than an internal pressure of the storage cylinder acts between the brittleness blocking member and the cover member, and hydrogen permeating the brittleness blocking member is discharged through the permeated hydrogen discharge hole.

Description

Technical Field

[0001] The present invention relates to a closing device for a hydrogen storage container for storing hydrogen in a sealed manner, and relates to a closing device for a hydrogen storage container that can safely discharge permeated hydrogen to the outside of the container while meeting the standards of hydrogen embrittlement resistance and mechanical strength. Background Art

[0002] Generally, a hydrogen container is used to store hydrogen, and the hydrogen container stores hydrogen by high-pressure compression so as to be able to store a large amount of hydrogen.

[0003] Due to the characteristics of hydrogen, a hydrogen container generates hydrogen embrittlement, and due to high-pressure storage, higher durability requirements are imposed. As an example of a hydrogen container, the "high-pressure gas container" of Korean Patent Publication No. 10-2330581 (announced on December 1, 2021) has been previously disclosed.

[0004] The above-mentioned existing high-pressure gas container includes: a container body; container reinforcing wires wound around the outer radial edge of the container body to enhance the rigidity of the container body; a container lid coupled to the side end of the opening of the container body to seal the container body and formed of a material having corrosion resistance to the filled gas; a yoke formed of a material that is cheaper than the container lid and does not have corrosion resistance, disposed on the container lid, and having a curved surface protruding outward from the container lid; and lid reinforcing wires wound around the outer edge in the longitudinal direction of the container body via the yoke to prevent the container lid from being separated due to the pressure of the gas filled in the container body.

[0005] Regarding such an existing high-pressure gas container, by winding container reinforcing wires around the container body and lid wires around the yoke, the durability can be improved, and by forming the container lid with a material having hydrogen embrittlement resistance, hydrogen embrittlement can be prevented.

[0006] However, in the existing high-pressure gas container, since the entire container lid is formed of a material having hydrogen embrittlement resistance, not only is the manufacturing cost high, but also due to the thick thickness of the container lid, hydrogen cannot permeate and stays, so there is a problem of generating hydrogen embrittlement. Summary of the Invention

[0007] (I) Technical Problems to be Solved

[0008] The present invention is proposed to solve the above problems. The problem to be solved by the present invention is to provide a closing device for a hydrogen storage container with improved hydrogen embrittlement resistance and a hydrogen storage container including the same. A brittleness blocking member is provided on the lid member, and external pressure is provided between the lid member and the brittleness blocking member through the permeated hydrogen discharge hole to prevent the brittleness blocking member from hydrogen embrittlement. And when hydrogen permeates the brittleness blocking member, it passes between the lid member and the brittleness blocking member and is discharged through the permeated hydrogen discharge hole, thereby preventing the lid member from hydrogen embrittlement.

[0009] In addition, the purpose is to provide a closing device for a hydrogen storage container with improved hydrogen embrittlement resistance and a hydrogen storage container including the same. By providing a brittleness blocking member for blocking hydrogen embrittlement on the lid member and selecting various materials to manufacture the lid member, the manufacturing cost can be reduced and the durability of the lid member can be improved.

[0010] (II) Technical solution

[0011] To achieve the above object, the closing device for a hydrogen storage container with improved hydrogen embrittlement resistance according to an embodiment of the present invention is used to seal a storage cylinder for storing hydrogen. The closing device of the hydrogen storage container includes: a lid member that seals an opening portion of the storage cylinder and supports the hydrogen pressure filled into the storage cylinder; a brittleness blocking member provided on the lid member, in direct contact with the hydrogen filled into the storage cylinder, and blocking hydrogen from penetrating into the lid member due to the internal pressure of the storage cylinder; and a permeated hydrogen discharge hole that penetrates the lid member and communicates with the outside, so that an external pressure lower than the internal pressure of the storage cylinder acts between the brittleness blocking member and the lid member, and the hydrogen that penetrates the brittleness blocking member is discharged through the permeated hydrogen discharge hole.

[0012] The closing device of the hydrogen storage container may include: an external pressure acting groove formed between the lid member and the brittleness blocking member, and the external pressure acts on the external pressure acting groove through the permeated hydrogen discharge hole.

[0013] The external pressure acting groove may be formed in the lid member or the brittleness blocking member in a concavo-convex shape.

[0014] The brittleness blocking member may be formed of a material with hydrogen embrittlement resistance or coated with a material with hydrogen embrittlement resistance, and the lid member may be formed of a material without hydrogen embrittlement resistance.

[0015] The brittleness blocking member may have a thickness less than or equal to 1 / 3 of the thickness of the lid member.

[0016] The brittleness blocking member may include: a blocking member seal provided at the outer edge of the brittleness blocking member to prevent hydrogen from leaking between the storage cylinder and the brittleness blocking member.

[0017] The lid member may include: a lid member seal that makes the lid member and the storage cylinder airtight to prevent hydrogen leakage.

[0018] The closing device of the hydrogen storage container may include: a filling nozzle that is provided through the lid member and the brittle blocking member to fill hydrogen into the interior of the storage cylinder.

[0019] A hydrogen storage container including a closing device for a hydrogen storage container that improves hydrogen embrittlement resistance according to an embodiment of the present invention includes: the closing device according to the above embodiment; and a cylinder wire wound around an outer surface of the storage cylinder to enhance the strength of the storage cylinder.

[0020] The storage cylinder has a form with openings on both sides, and the closing device may be respectively provided on both sides of the openings of the storage cylinder.

[0021] A hydrogen storage container including the closing device of the hydrogen storage container may include: yokes respectively provided outside the lid members located on both sides of the storage cylinder to prevent the lid members from detaching from the storage cylinder; and yoke wires wound around and passing through outer edges of the yokes located on both sides of the storage cylinder with the storage cylinder therebetween to enhance the pressure axially applied to the storage cylinder.

[0022] (III) Advantageous Effects

[0023] According to the present invention, a brittle blocking member is provided on the lid member, and an external pressure is provided between the lid member and the brittle blocking member through the permeated hydrogen discharge hole, so that while guiding the hydrogen infiltrating into the brittle blocking member to permeate through the brittle blocking member, the hydrogen permeating through the brittle blocking member is discharged to the outside through the permeated hydrogen discharge hole, thereby preventing the lid member from generating hydrogen embrittlement.

[0024] In addition, by providing a brittle blocking member on the lid member to prevent hydrogen embrittlement, various materials can be selected to manufacture the lid member to reduce manufacturing costs, and the durability of the lid member can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a perspective view showing a hydrogen storage container including a closing device for a hydrogen storage container that improves hydrogen embrittlement resistance according to an embodiment of the present invention.

[0026] Figure 2 is a side cross-sectional view showing a hydrogen storage container including a closing device for a hydrogen storage container that improves hydrogen embrittlement resistance according to an embodiment of the present invention.

[0027] Figure 3 is a perspective view showing a closing device for a hydrogen storage container that improves hydrogen embrittlement resistance according to an embodiment of the present invention, in a state where the lid member and the brittle blocking member are separated.

[0028] Figure 4 is a side cross-sectional view of a closing device of a hydrogen storage container for improving hydrogen embrittlement resistance according to an embodiment of the present invention.

[0029] Figure 5 is Figure 4 an enlarged view of part “A” of

[0030] Figure 6 is a side cross-sectional view of a closing device of a hydrogen storage container for improving hydrogen embrittlement resistance according to an embodiment of the present invention, showing a lid member of a modified example. Detailed Description

[0031] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0032] As Figures 3 to 5 shown, a closing device 100 of a hydrogen storage container 500 for improving hydrogen embrittlement resistance according to an embodiment of the present invention may include a lid member 110 and a hydrogen embrittlement blocking member 120.

[0033] The lid member 110 may cover an opening portion of a storage cylinder 200 for storing hydrogen to seal the storage cylinder 200, and the lid member 110 may support a hydrogen pressure acting in the axial direction of the storage cylinder 200.

[0034] Among them, the storage cylinder 200 has a cylindrical shape and may be in a form with an opening at any one end or both ends. In the accompanying drawings, both ends of the storage cylinder 200 are shown to be open, and closing devices 100 are respectively provided at both ends of the opening.

[0035] The lid member 110 may cover and seal an opening portion in the storage cylinder 200, and an insertion portion 111 may be provided on one side of the lid member 110. The insertion portion 111 has an outer diameter corresponding to the inner diameter of the storage cylinder 200 and is inserted inside an end portion of the storage cylinder 200.

[0036] An outer edge of the insertion portion 111 of the lid member 110 may be provided with a lid member seal 115. The lid member seal 115 prevents hydrogen filled in the storage cylinder 200 from leaking to the outside through between the storage cylinder 200 and the lid member 110.

[0037] A ring-shaped seal groove is formed on the outer edge of the insertion portion 111. The lid member seal 115 may be provided in a form of being inserted into the seal groove. The lid member seal 115 may also be formed of metal to withstand high pressure, and the lid member seal 115 may be formed of a material having hydrogen embrittlement resistance to prevent hydrogen embrittlement.

[0038] Among them, the materials with hydrogen embrittlement resistance can be, for example, aluminum, titanium, carbon, stainless steel, austenite, martensite, or metals of their series, or alloys containing any one of them.

[0039] The lid component seal 115 can also be realized by various existing forms of high-pressure seals that can withstand the high pressure of hydrogen filled into the storage cylinder 200.

[0040] The lid component 110 can be formed with permeated hydrogen discharge holes 113 that communicate with the outside to allow the external pressure (atmospheric pressure) to act between the lid component 110 and the embrittlement blocking component 120, and discharge the hydrogen that permeates the embrittlement blocking component 120 to the outside.

[0041] The permeated hydrogen discharge holes 113 can be formed through the outer edge of the insertion part 111 to discharge hydrogen to the outside of the lid component 111.

[0042] A pressure hole valve for adjusting the opening degree of the permeated hydrogen discharge holes 113 can be provided in the permeated hydrogen discharge holes 113. Since the amount of hydrogen discharged through the permeated hydrogen discharge holes 113 is extremely small, it can be discharged to the outside, or a catalyst carrier filter can be installed and filtered with the catalyst carrier filter to prevent it from being discharged to the outside, or a separate storage container can be connected to store it in the storage container.

[0043] The position where the permeated hydrogen discharge holes 113 penetrate the outer edge of the insertion part 111 can be located inside the storage cylinder 200 compared to the position where the lid component seal 115 is installed, so that the hydrogen in the embrittlement blocking component 120 can be discharged to the outside of the lid component 110 through the permeated hydrogen discharge holes 113 before being airtight by the lid component seal 115.

[0044] Since the lid component 110 is protected from hydrogen embrittlement by the embrittlement blocking component 120 described below, it can be formed of a material without hydrogen embrittlement resistance.

[0045] Among them, if the lid component 110 uses a material without hydrogen embrittlement resistance, the manufacturing cost can be significantly reduced.

[0046] In the lid component 110, an external pressure acting groove 117 can be formed on the surface combined with the embrittlement blocking component 120, and the external pressure can act between the lid component 110 and the embrittlement blocking component 120 to guide the discharge of hydrogen.

[0047] Among them, since the external pressure acting groove 117 is located at the boundary surface between the lid component 110 and the embrittlement blocking component 120, the external atmospheric pressure can act on the external pressure acting groove 117 through the permeated hydrogen discharge holes 113 and through the gap at the boundary surface between the lid component 110 and the embrittlement blocking component 120.

[0048] The inner surface of the external pressure application groove 117 can be coated with a material having hydrogen embrittlement resistance to prevent hydrogen flowing into the external pressure application groove 117 from infiltrating into the interior of the lid member 110, or a brittleness prevention cover (not shown) can be provided, which has a shape corresponding to the external pressure application groove 117 and is assembled to the external pressure application groove 117 and is formed of a material having hydrogen embrittlement resistance.

[0049] In addition, a fastening hole 119 is formed through the lid member 110, and a fastening member 130 such as a bolt passes through the fastening hole 119 and is fastened to couple the brittleness blocking member 120, and the fastening hole 119 is connected to the external pressure application groove 117 so that the external atmospheric pressure can act on the external pressure application groove 117 through the fastening hole 119.

[0050] The external pressure application groove 117 can be formed in a shape of a flow path connected to the outer edge of the lid member 110 or the outer edge of the mutually facing surfaces of the brittleness blocking member 120 on the surface of the lid member 110 facing the brittleness blocking member 120 or on the surface of the brittleness blocking member 120 facing the lid member 110 or on all of these surfaces, or can be formed in the lid member 110 in the form of a groove having an arbitrary shape at an arbitrary position.

[0051] Of course, the external pressure application groove 117 can also be formed in an irregular or regular concavo-convex shape on the surface of the lid member 110 facing the brittleness blocking member 120 or on the surface of the brittleness blocking member 120 facing the lid member 110 or on all of these surfaces.

[0052] As Figure 6 shown, the lid member 110 of the modified example can be formed such that the surface of the insertion portion 111 facing the interior of the storage cylinder 200 has a curved surface recessed toward the outside of the storage cylinder 200 so that the pressure acting in the axial direction of the storage cylinder 200 is equalized.

[0053] At this time, the brittleness blocking member 120 described below can also be formed to have a curved surface corresponding to the concave curved surface of the lid member 110 so that the pressure acting in the axial direction of the storage cylinder 200 acts uniformly on the brittleness blocking member 120.

[0054] The brittleness blocking member 120 can be coupled to the lid member 110 to block hydrogen embrittlement of the lid member 110.

[0055] The brittleness blocking member 120 can be provided on the surface of the insertion portion 111 of the lid member 110 that is inserted into the interior of the storage cylinder 200 and contacts the hydrogen stored in the storage cylinder 200.

[0056] The brittleness blocking member 120 can separate the lid member 110 side and the interior of the storage cylinder 200 to perform a pressure prevention function of preventing the pressure of the storage cylinder 200 from being transmitted to the lid member 110 side.

[0057] Among them, atmospheric pressure acts between the cover member 110 and the brittle blocking member 120 through the permeable hydrogen discharge hole 113. And due to the relatively high-pressure hydrogen pressure acting on the inside of the storage cylinder 200, the brittle blocking member 120 can perform the function of blocking the transmission of hydrogen pressure to the cover member 110 side.

[0058] The brittle blocking member 120 can have an inner diameter corresponding to the inner diameter of the storage cylinder 200, and the brittle blocking member 120 can be coupled to the cover member 110 through a fastening member 130 such as a bolt.

[0059] The brittle blocking member 120 can be formed of a material having hydrogen embrittlement resistance, or the surface of the brittle blocking member 120 in contact with hydrogen can also be coated with a material having hydrogen embrittlement resistance.

[0060] The brittle blocking member 120 can have a thickness T2 less than or equal to 1 / 3 of the thickness T1 of the cover member 110.

[0061] Among them, when the thickness of the brittle blocking member 120 exceeds 1 / 3 of the thickness T1 of the cover member 110, hydrogen cannot permeate the brittle blocking member 120 and stays in the brittle blocking member 120, resulting in a relatively high possibility of hydrogen embrittlement. And since the brittle blocking member 120 occupies a relatively large volume of the internal space of the storage cylinder 200, the amount of hydrogen filled will be reduced.

[0062] However, when the thickness T2 of the brittle blocking member 120 is less than or equal to 1 / 3 of the thickness T1 of the cover member 110, the hydrogen flowing into the brittle blocking member 120 can permeate the brittle blocking member 120 through the high-pressure and does not stay inside the brittle blocking member 120, and the volume of the internal space of the cylinder occupied by the brittle blocking member 120 can be reduced, thereby storing a relatively large amount of hydrogen.

[0063] The brittle blocking member 120 can include a blocking member seal 121.

[0064] The blocking member seal 121 is provided at the outer edge of the brittle blocking member 120, and can prevent the hydrogen stored in the storage cylinder 200 from leaking through between the brittle blocking member 120 and the storage cylinder 200.

[0065] The blocking member seal 121 can be formed in a ring shape, and can be formed of a material having hydrogen embrittlement resistance, or coated with a material having hydrogen embrittlement resistance, and the blocking member seal 121 can be realized by various existing forms of high-pressure seals capable of withstanding high-pressure hydrogen pressure.

[0066] The blocking member seal 121 can be provided at the outer edge of the surface of the brittle blocking member 120 facing hydrogen to prevent hydrogen leakage.

[0067] The brittle blocking member 120 is overlapped with the lid member 110 to prevent hydrogen from infiltrating into the lid member 110. Thus, while preventing hydrogen embrittlement of the lid member 110, by forming only the lid member 110 to have a thickness T1 capable of withstanding the internal pressure acting axially in the storage cylinder 200, the thickness T1 of the lid member 110 can be minimized, thereby reducing the manufacturing cost.

[0068] As Figure 3 and Figure 4 shown, the closing device 100 of the hydrogen storage container 500 for improving hydrogen embrittlement resistance according to an embodiment of the present invention may include a filling nozzle 140.

[0069] The filling nozzle 140 may fill hydrogen into the interior of the storage cylinder 200.

[0070] The filling nozzle 140 may penetrate through both the lid member 110 and the brittle blocking member 120 simultaneously to supply and fill hydrogen from the outside of the lid member 110 into the interior of the storage cylinder 200.

[0071] The filling nozzle 140 can not only fill hydrogen into the interior of the storage cylinder 200, but also discharge the hydrogen stored in the storage cylinder 200 to the outside through the filling nozzle 140.

[0072] Among them, when the filling nozzle 140 only performs the function of filling hydrogen into the interior of the storage cylinder 200, in addition to the filling nozzle 140, a discharge nozzle may be provided that penetrates through the lid member 110 and the brittle blocking member 120 to discharge the filled hydrogen to the outside.

[0073] When closing devices 100 are provided at both ends of the storage cylinder 200, the filling nozzle 140 may be provided only in the closing device 100 located at any one side end, or may be provided in the closing devices 100 located on both sides simultaneously, or the filling nozzle 140 may be provided in the closing device 100 located at any one side end, and a discharge nozzle may be provided in the closing device 100 located at the other side end.

[0074] The functions and effects among the above-described structures will be described.

[0075] The closing device 100 of the hydrogen storage container 500 for improving hydrogen embrittlement resistance according to an embodiment of the present invention is respectively provided on two surfaces of the opening of the storage cylinder 200 to seal the opening portion of the storage cylinder 200.

[0076] The closing device 100 may be provided in the storage cylinder 200 such that in a state where the brittle blocking member 120 is coupled to the lid member 110 that seals the end of the storage cylinder 200, the brittle blocking member 120 is located inside the storage cylinder 200.

[0077] The lid member 110 and the brittle blocking member 120 can be fastened to each other by the fastening member 130 and have a gap such that external pressure acts on the lid member 110 and the brittle blocking member 120, and an external pressure acting groove 117 is formed on the surface of the lid member 110 facing the brittle blocking member 120, and the external pressure acts on the external pressure acting groove 117 through the gap between the brittle blocking member 120 and the lid member 110.

[0078] An osmotic hydrogen discharge hole 113 communicating with the outside is formed through the lid member 110 so that hydrogen permeating the brittle blocking member 120 can be discharged to the outside while the external pressure acts on the outer edge of the insertion portion 111.

[0079] In addition, a lid member seal 115 is provided on the insertion portion 111 of the lid member 110 to prevent hydrogen from leaking between the storage cylinder 200 and the lid member 111.

[0080] A blocking member seal 121 is also provided on the outer edge of the brittle blocking member 120 to prevent hydrogen from leaking between the storage cylinder 200 and the lid member 111.

[0081] On the other hand, in the closing device 100, a filling nozzle 140 for filling hydrogen into the interior of the storage cylinder 200 is provided through the lid member 110 and the brittle blocking member 120.

[0082] In the closing device 100 of the hydrogen storage container 500 for improving hydrogen embrittlement resistance according to an embodiment of the present invention configured as described above, hydrogen stored at high pressure inside the storage cylinder 200 contacts the brittle blocking member 120, and a blocking member seal 121 and a lid member seal 115 are provided on the outer edges of the brittle blocking member 120 and the lid member 110 to block hydrogen in the storage cylinder 200 from leaking to the outside.

[0083] In addition, inside the storage cylinder 200 centered on the brittle blocking member 120, the pressure of the stored hydrogen acts on the inside of the storage cylinder 200, and on the lid member 110 side centered on the brittle blocking member 120, atmospheric pressure acts on the external pressure acting groove 117 through the osmotic hydrogen discharge hole 113 and through the gap between the lid member 110 and the brittle blocking member 120.

[0084] In the closing device 100 that seals the storage cylinder 200 in this way, when hydrogen penetrates into the interior of the brittle blocking member 120, due to the difference between the internal pressure of the storage cylinder 200 of the brittle blocking member 120 and the external pressure of the lid member 110, the hydrogen that has penetrated into the brittle blocking member 120 is guided to penetrate to the lid member 110 side.

[0085] At this time, since the brittle blocking member 120 has a thickness T2 that is relatively thinner than the thickness T1 of the lid member 110, when hydrogen penetrates into the brittle blocking member 120, the hydrogen can permeate without being retained.

[0086] In addition, the hydrogen that penetrates the brittle blocking member 120 moves to the external pressure action groove 117 where the atmospheric pressure acts and between the gaps between the lid member 110 and the brittle blocking member 120 due to the pressure difference, and is discharged to the outside through the permeated hydrogen discharge holes 113 formed on the outer edge of the insertion portion 111, thereby preventing hydrogen from penetrating into the lid member 110 and causing hydrogen embrittlement.

[0087] Therefore, in the closing device 100 of the hydrogen storage container 500 for improving hydrogen embrittlement resistance according to an embodiment of the present invention, a brittle blocking member 120 can be provided on the lid member 110 to prevent hydrogen from penetrating into the lid member 110 and causing hydrogen embrittlement of the lid member 110, and the hydrogen that penetrates the brittle blocking member 120 can be discharged to the outside through the permeated hydrogen discharge holes 113 where the atmospheric pressure acts in the lid member 110, so as to prevent the permeated hydrogen from penetrating into the lid member 110 and causing hydrogen embrittlement.

[0088] In addition, since hydrogen embrittlement is prevented by the brittle blocking member 120, the lid member 110 does not need to use a material with hydrogen embrittlement resistance, so various materials can be selected to manufacture the lid member 110, and the manufacturing cost can be reduced.

[0089] In addition, since the lid member 110 is manufactured to have the minimum thickness T1 that can withstand the axial pressure of the storage cylinder 200, the volume of the lid member 110 can be minimized, the manufacturing cost can be reduced, and the lid member 110 can be manufactured by selecting a material that can easily meet the mechanical strength to improve durability.

[0090] Hereinafter, the hydrogen storage container 500 including the closing device 100 for improving hydrogen embrittlement resistance according to an embodiment of the present invention will be described.

[0091] As Figure 1 and Figure 2 shown, the hydrogen storage container 500 including the closing device 100 for improving hydrogen embrittlement resistance according to an embodiment of the present invention may include a closing device 100.

[0092] Since the closing device 100 is the closing device 100 of the hydrogen storage container 500 according to the above embodiment, a detailed description of the closing device 100 will be omitted.

[0093] The hydrogen storage container 500 including the closing device 100 of the hydrogen storage container 500 according to an embodiment of the present invention may include a storage cylinder 200, a yoke 300, cylinder wires 210, and yoke wires 310.

[0094] The storage cylinder 200 can store hydrogen.

[0095] The storage cylinder 200 can be formed in a cylindrical shape with a hollow interior, and both ends of the storage cylinder 200 can be open.

[0096] Both ends of the storage cylinder 200 can be sealed by the closing device 100.

[0097] The cylinder wire 210 can reinforce the pressure acting in the radial direction of the storage cylinder 200, and the cylinder wire 210 can be wound around the outer surface of the storage cylinder 200 along the outer edge of the storage cylinder 200.

[0098] The cylinder wire 210 can be formed in the form of a wire, and the cylinder wire 210 can be formed in the form of a strip and wound around the outer surface of the storage cylinder 200 to form multiple layers.

[0099] The yoke 300 can be provided on the outer surface of the lid member 110 of the closing device 100 to prevent the closing device 100 from detaching from the storage cylinder 200 due to the axial pressure of the storage cylinder 200.

[0100] The yoke 300 can be in a semi-circular form, and the yoke 300 can be provided on the lid member 110 so that the flat end faces the lid member 110 of the closing device 100.

[0101] The yokes 300 can be respectively provided on the lid members 110 of the closing devices 100 located on both sides, and the yokes 300 can be wound by the yoke wires 310.

[0102] The yoke wire 310 can reinforce the pressure applied in the axial direction of the storage cylinder 200.

[0103] The yoke wire 310 can be formed in the form of a wire, and the yoke wire 310 can be formed in the form of a strip.

[0104] The yoke wire 310 can be wound in such a way that it simultaneously passes through the yokes 300 located on both sides centered on the storage cylinder 200 and the outer edge of the storage cylinder 200, and the yoke wire 310 can be wound to form multiple layers.

[0105] On the other hand, the yokes 300 located on both sides of the storage cylinder 200 can also be supported by the columns 330.

[0106] In the hydrogen storage container 500 of the closing device 100 including the hydrogen storage container 500 according to an embodiment of the present invention configured as described above, the cylinder wire 210 is wound around the outer surface of the storage cylinder 200 to reinforce the pressure acting radially, and the lid members 110 are provided at both ends of the storage cylinder 200 so that the brittle blocking member 120 of the closing device 100 is located inside the storage cylinder 200 in contact with the stored hydrogen.

[0107] In addition, yokes 300 are respectively provided on cover members 110 located on both sides of storage cylinder 200, such that in a state where closing device 100 is provided on storage cylinder 200 to seal storage cylinder 200, the flat surfaces of yokes 300 are placed on cover members 110.

[0108] In addition, yoke wires 310 are wound and pass through yokes 300 on both sides of storage cylinder 200 and the outer edge of storage cylinder 200 to enhance the pressure applied axially to storage cylinder 200.

[0109] Regarding hydrogen storage container 500 of closing device 100 according to an embodiment of the present invention configured in this way, on the effect of closing device 100 of hydrogen storage container 500 according to an embodiment of the present invention, cylinder wires 210 can be further wound around the outer edge of storage cylinder 200 to enhance the radial pressure of storage cylinder 200. Therefore, not only can durability be improved, but also explosion of storage cylinder 200 can be prevented, and the axial pressure of storage cylinder 200 can be enhanced through yoke wires 310 to improve durability.

[0110] In addition, closing devices 100 are provided on both sides of storage cylinder 200, thereby preventing hydrogen embrittlement of cover members 110.

[0111] The embodiments of the present invention have been described above, but the scope of rights of the present invention is not limited thereto, and should include all changes and modifications within the range that can be easily changed and considered equivalent by those of ordinary skill in the art through the embodiments of the present invention.

[0112] Description of Reference Numerals

[0113] 100: Closing Device 110: Cover Member

[0114] 111: Insertion Port 113: Permeated Hydrogen Discharge Hole

[0115] 115: Cover Member Seal 117: External Pressure Acting Groove

[0116] 119: Fastening Hole 120: Brittle Blocking Member

[0117] 121: Blocking Member Seal 130: Fastening Member

[0118] 140: Filling Nozzle 200: Storage Cylinder

[0119] 210: Cylinder Wire 300: Yoke

[0120] 310: Yoke Wire 330: Column

[0121] 500: Hydrogen Storage Container

Claims

1. A closing device for a hydrogen storage container with improved hydrogen embrittlement resistance, the closing device of the hydrogen storage container being used to seal a storage cylinder for storing hydrogen, characterized in that, Comprising: A lid member that seals an opening portion of the storage cylinder and supports the hydrogen pressure filled into the storage cylinder; A brittle blocking member that is provided on the lid member, directly contacts the hydrogen filled into the storage cylinder, and blocks the infiltration of hydrogen into the lid member due to the internal pressure of the storage cylinder; and A permeated hydrogen discharge hole that penetrates the lid member and communicates with the outside, such that an external pressure lower than the internal pressure of the storage cylinder acts between the brittle blocking member and the lid member, and the hydrogen that permeates the brittle blocking member is discharged through the permeated hydrogen discharge hole.

2. The closing device of the hydrogen storage container for improving hydrogen embrittlement resistance according to claim 1, characterized in that, Comprising: An external pressure acting groove that is formed between the lid member and the brittle blocking member, and the external pressure acts on the external pressure acting groove through the permeated hydrogen discharge hole.

3. The closure device of a hydrogen storage container for improving hydrogen embrittlement resistance according to claim 1, wherein The external pressure acting groove is formed in the lid member or the brittle blocking member in a concavo-convex shape.

4. The closure device of a hydrogen storage container for improving hydrogen embrittlement resistance according to claim 1, wherein The brittle blocking member is formed of a material having hydrogen embrittlement resistance or is coated with a material having hydrogen embrittlement resistance, The lid member is formed of a material not having hydrogen embrittlement resistance.

5. The closure device of a hydrogen storage container for improving hydrogen embrittlement resistance according to claim 1, wherein The brittle blocking member has a thickness less than or equal to 1 / 3 of the thickness of the lid member.

6. The closure device of a hydrogen storage container for improving hydrogen embrittlement resistance according to claim 1, wherein The brittle blocking member includes: A blocking member seal that is provided at an outer edge of the brittle blocking member to prevent hydrogen from leaking between the storage cylinder and the brittle blocking member.

7. The closure device of a hydrogen storage container for improving hydrogen embrittlement resistance according to claim 1, wherein The lid member includes: A lid member seal that makes the lid member and the storage cylinder airtight to prevent the leakage of the hydrogen.

8. The closure device of the hydrogen storage container for improving hydrogen embrittlement resistance according to claim 1, characterized in that, Comprising: A filling nozzle that is provided through the lid member and the brittle blocking member to fill hydrogen into the interior of the storage cylinder.

9. A hydrogen storage container including a closing device for the hydrogen storage container that improves hydrogen embrittlement resistance, characterized in that, Comprising: The closure device according to claim 1; And A cylinder wire that is wound around an outer surface of the storage cylinder to enhance the strength of the storage cylinder.

10. The hydrogen storage container including the closure device of a hydrogen storage container for improving hydrogen embrittlement resistance according to claim 9, wherein The storage cylinder has a form with openings on both sides, The closure devices are respectively provided on both sides of the openings of the storage cylinder.

11. The hydrogen storage container including a closing device of the hydrogen storage container that improves hydrogen embrittlement resistance according to claim 10, characterized in that, Comprising: Yokes that are respectively provided outside the lid members located on both sides of the storage cylinder to prevent the lid members from detaching from the storage cylinder; And Yoke wires that are wound and pass through outer edges of the yokes located on both sides of the storage cylinder with the storage cylinder therebetween to enhance the pressure axially applied to the storage cylinder.

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