Volume variable type hydrogen container or hydrogen compressor capable of improving hydrogen embrittlement resistance

Abstract

The present invention relates to a volume-variable hydrogen container or hydrogen compressor for improving hydrogen embrittlement resistance, comprising: a variable container which expands or contracts when filled with hydrogen to compress or discharge the filled hydrogen; a pressure vessel having a form in which both ends or one end is open, and accommodating the variable vessel; the container wire is wound along the radial direction of the pressure container to enhance the rigidity of the pressure container; a container cover sealing an opening portion of the pressure container; a container frame surrounding a periphery of a container assembly of the container cover coupled to the pressure container and supporting the container assembly to prevent the container cover from disengaging from the pressure container; a frame wire wound around the container frame to enhance the rigidity of the container frame; a brittleness blocking member overlapped on the container lid to block penetration of hydrogen gas into the container lid due to the internal pressure of the variable container or the pressure container; and a permeated hydrogen gas discharge hole for discharging the hydrogen gas permeated into the brittleness blocking member to the outside before the hydrogen gas flows into the container lid.

Description

Technical Field

[0001] The invention relates to a hydrogen container filled with hydrogen or a hydrogen compressor for compressing hydrogen. Background Art

[0002] Generally speaking, hydrogen is one of the clean energy sources that can replace oil or coal, because hydrogen combines with oxygen to become very small amounts of nitrogen and water when burned, and therefore does not cause environmental pollution.

[0003] Hydrogen as an alternative energy source can have a variety of applications. For example, hydrogen can provide power through the explosive force generated by combustion, or it can generate electricity through chemical reactions. However, since hydrogen tends to explode when reacting with oxygen, the storage and handling of hydrogen is difficult.

[0004] In order to solve this problem, a "high-pressure gas container" was previously disclosed in Korean Patent No. 10-2330581 (announced on December 1, 2021).

[0005] The above-mentioned high-pressure gas container includes: a container body, which has a cylindrical shape and is open on both sides or one of the two sides; a container reinforcement wire, which is wound around the radial direction of the container body to enhance the rigidity of the container body; a container cover, which is made of a material that is corrosion-resistant to the filled gas and is combined to the side end of the opening of the container body to seal the container body; a yoke, which is made of a non-corrosion-resistant material with a lower chromium valence than the container cover, is placed on the container cover, and has a semicircular curved surface protruding toward the outside of the container cover; and a cover reinforcement wire, which is wound around the length direction of the container body via the yoke to prevent the container cover from being separated due to the pressure of the gas filled in the container body.

[0006] This conventional high-pressure gas container has a container reinforcement wire wound around the container body and a cover reinforcement wire wound around the yoke, thereby preventing the container body from exploding.

[0007] However, a problem with conventional high-pressure gas containers is that as the filling capacity of hydrogen decreases, the internal pressure decreases, and the pressure of the exhausted hydrogen also decreases, so hydrogen cannot be supplied at a uniform pressure. Moreover, although conventional high-pressure gas containers have improved high-pressure durability, they are prone to hydrogen embrittlement and are therefore easily damaged, such as cracking.

[0008] In order to solve the above problems, the Korean Patent Publication No. 10-2487016 applied by the present applicant discloses a "volume-variable hydrogen container or hydrogen compressor with improved resistance to hydrogen embrittlement".

[0009] The above-mentioned variable-volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance can discharge hydrogen at a constant pressure by installing a variable container inside the pressure container.

[0010] However, the above-mentioned variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance has a problem in that when pressure is applied through the variable container, hydrogen will penetrate into the container cover having a relatively thick thickness, causing the container cover to be damaged due to hydrogen embrittlement.

[0011] In addition, in order to prevent hydrogen embrittlement, the container cover is made of a material having resistance to hydrogen embrittlement, so the manufacturing cost is high.

[0012] Prior art literature

[0013] Patent Literature

[0014] (Patent Document 0001) KR10-2330581B1

[0015] (Patent Document 0002) KR10-2487016B1

[0016] (Patent Document 0003) KR10-2563976B1 Summary of the invention

[0017] 1. Technical issues to be resolved

[0018] The present invention is proposed to solve the above-mentioned problems. The problem to be solved by the present invention is to provide a variable-volume hydrogen container or hydrogen compressor with improved resistance to hydrogen embrittlement. A variable container with a variable volume is installed inside the pressure container, so that the filled hydrogen can be discharged at a constant pressure until the filled hydrogen is completely discharged, and the variable container can be pressurized by a pressure medium to perform the compressor function of compressing hydrogen, and hydrogen embrittlement caused by hydrogen penetrating into the container cover can be prevented by overlapping the brittle blocking member on the container cover.

[0019] In addition, the purpose of the present invention is to provide a volume-variable hydrogen container or hydrogen compressor with improved resistance to hydrogen embrittlement, an external pressure action groove is formed between the container cover and the brittle blocking member, and the external pressure acts on the external pressure action groove through the hydrogen permeation discharge hole, so that the hydrogen that permeates the brittle blocking member can be discharged to the outside through the hydrogen permeation discharge hole, thereby preventing the container cover from hydrogen embrittlement.

[0020] In addition, an object of the present invention is to provide a volume-variable hydrogen container or hydrogen compressor with improved resistance to hydrogen embrittlement, and a brittle blocking component for blocking hydrogen embrittlement is installed on the container cover, so that the container cover can be manufactured from a variety of materials, thereby reducing manufacturing costs, and the container cover can be made of a material with relatively higher durability than a material with resistance to hydrogen embrittlement, thereby improving durability.

[0021] (II) Technical solution

[0022] In order to achieve the above-mentioned problems, a variable-volume hydrogen container or hydrogen compressor with improved resistance to hydrogen embrittlement according to an embodiment of the present invention includes: a variable container, which is filled with hydrogen and expands, or contracts to compress or discharge the filled hydrogen; a pressure vessel, which has a form with both ends or one end open and accommodates the variable container; a container wire, which is wound along the radial direction of the pressure vessel to enhance the rigidity of the pressure vessel; a container cover, which seals the opening part of the pressure vessel; a container frame, which surrounds the container cover and is coupled to the periphery of the container assembly of the pressure vessel and supports the container assembly to prevent the container cover from detaching from the pressure vessel; a frame wire, which is wound around the container frame to enhance the rigidity of the container frame; a brittle blocking member, which overlaps the container cover to block hydrogen from penetrating into the container cover due to the internal pressure of the variable container or the pressure vessel; and a hydrogen permeation discharge hole, which discharges the hydrogen that has penetrated the brittle blocking member to the outside before flowing into the container cover.

[0023] The variable-volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance may include an external pressure application groove formed between the container cover and the brittle blocking member, and external pressure acts on the external pressure application groove through the permeated hydrogen discharge hole.

[0024] The external pressure acting groove may be formed in a concavo-convex form on the container cover or the fragile blocking member.

[0025] The brittle blocking member may be made of a material having resistance to hydrogen embrittlement, or may be coated with a material having resistance to hydrogen embrittlement, and the container cover may be made of a material not having resistance to hydrogen embrittlement.

[0026] The thickness of the fragile blocking member may be less than 1 / 3 of the thickness of the rearmost portion of the container cover.

[0027] The frangible blocking member may include a blocking member seal installed at an edge of the frangible blocking member to prevent hydrogen from flowing out through between the pressure vessel and the frangible blocking member or between the variable vessel and the frangible blocking member.

[0028] The container cover may include a cover seal that achieves airtightness between the container cover and the pressure vessel to prevent hydrogen from flowing out.

[0029] The variable-volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance may include a filling nozzle installed through the container cover and the brittle blocking member to fill hydrogen into the interior of the variable container.

[0030] The container cover may include a compression core that is inserted into the inside of the variable container to pressurize the filled hydrogen when the variable container is contracted, and the brittle blocking member may be installed to surround the circumference of the compression core.

[0031] The container frame may include: a yoke frame portion, which is located outside each of the container covers to support the container covers and has a semicircular curved surface protruding outward; and a side frame portion, which is located at both side ends of the pressure container across the pressure container and supports the yoke frame portion.

[0032] The variable container may be formed by stacking a plurality of annular plates and joining the stacked plurality of annular plates in a bellows form.

[0033] The variable-volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance may include a pressure medium supplied between the variable container and the pressure container to compress or discharge the filled hydrogen by pressurizing the variable container.

[0034] The container frame may include a stand that supports the container assembly from the ground.

[0035] (III) Beneficial effects

[0036] According to the present invention, a variable container with a variable volume is installed inside a pressure vessel, and the volume of the variable container expands or contracts according to the pressure of the hydrogen filled, so that hydrogen can be filled or discharged at a uniform pressure, and hydrogen can be compressed, and the container cover can be prevented from hydrogen embrittlement by installing a brittle blocking member on the container cover with a relatively thick thickness.

[0037] In addition, in the present invention, an external pressure acting groove is formed between the container cover and the brittle blocking member, so that hydrogen that penetrates the brittle blocking member can be gathered in the external pressure acting groove and discharged to the outside through the permeated hydrogen discharge hole, thereby preventing the container cover from hydrogen embrittlement.

[0038] In addition, in the present invention, a brittle blocking member is installed on the container cover, so that the container cover can be manufactured by selecting a variety of materials that are not resistant to hydrogen embrittlement, thereby reducing manufacturing costs, and the container cover can be made of a material with relatively strong durability, thereby improving durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 The present invention is a perspective view showing a variable-volume hydrogen container or a hydrogen compressor having improved resistance to hydrogen embrittlement according to an embodiment of the present invention.

[0040] Figure 2It is an exploded stereoscopic diagram of a variable-volume hydrogen container or a hydrogen compressor with improved resistance to hydrogen embrittlement according to an embodiment of the present invention.

[0041] Figure 3 1 is a side cross-sectional view showing a volume-variable hydrogen container or a hydrogen compressor with improved hydrogen embrittlement resistance according to an embodiment of the present invention, showing a state where the variable container is reduced.

[0042] Figure 4 1 is a plan cross-sectional view showing a volume-variable hydrogen container or a hydrogen compressor with improved resistance to hydrogen embrittlement according to an embodiment of the present invention, showing a state where the variable container is expanded.

[0043] Figure 5 The invention is an enlarged cross-sectional view of a container cover equipped with a brittle blocking member of a volume-variable hydrogen container or a hydrogen compressor having improved hydrogen embrittlement resistance according to an embodiment of the present invention.

[0044] Description of Reference Numerals

[0045] 100: Volume-variable hydrogen container or hydrogen compressor with improved resistance to hydrogen embrittlement

[0046] 110: Container assembly 111: Cover fixing fixture

[0047] 120: Variable container 121: Ring plate

[0048] 130: Pressure vessel 131: Container wire

[0049] 133: Container cover 140: Container lid

[0050] 141: Compressed core 142: Cover seal

[0051] 143: Hydrogen inlet and outlet 145: Medium inlet and outlet

[0052] 150: container frame 151: yoke frame part

[0053] 151a: Hydrogen filling and discharge port 151b: Medium filling and discharge port

[0054] 151d: Yoke cover 153: Side frame part

[0055] 155: frame wire 157: frame cover

[0056] 159: Bracket 160: Brittle blocking member

[0057] 161: Blocking member seal 163: Permeation hydrogen discharge hole

[0058] 165: External pressure acting groove 167: Fastening member

[0059] 170: Medium supply device 171: Cooler DETAILED DESCRIPTION

[0060] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0061] like Figures 1 to 4 As shown, a volume-variable hydrogen container or a hydrogen compressor 100 with improved hydrogen embrittlement resistance according to an embodiment of the present invention may include a container assembly 110 .

[0062] The container assembly 110 can be filled with and compressed hydrogen, or pressurized to discharge hydrogen, or stored to preserve hydrogen.

[0063] The container assembly 110 may include a variable container 120 .

[0064] Hydrogen gas may be injected into the inside of the variable container 120 , and the variable container 120 may expand and contract to change the internal volume according to the filling amount of hydrogen gas.

[0065] The variable container 120 has a bellows shape with one end open and the other end sealed and can expand and contract, and the variable container 120 can be formed into a bellows shape by alternately joining the inner and outer circumferences of adjacent annular plates 121 in a state of stacking a plurality of annular plates 121 .

[0066] At this time, the plurality of annular plates 121 may be coated with a material having resistance to hydrogen embrittlement, be treated to prevent hydrogen embrittlement, or be made of a material having resistance to hydrogen embrittlement to prevent damage due to hydrogen embrittlement of hydrogen gas filled therein.

[0067] Here, the material having resistance to hydrogen embrittlement may be aluminum, titanium, carbon, stainless steel, austenite, martensite, or a series of metals thereof, or non-metals.

[0068] On the other hand, the multiple annular plates 121 are formed in the form of thin plates, so that when the variable container 120 shrinks and expands, the inner and outer peripheries can be elastically deformed, and the inner and outer peripheries of each of the multiple annular plates 121 can have a wavy fold shape to facilitate elastic deformation.

[0069] Since the variable container 120 can expand and contract, when the variable container 120 contracts, the hydrogen inside may be compressed or discharged, and when the variable container 120 expands, the hydrogen may be sucked into the inside of the variable container 120 .

[0070] At this time, the contraction and expansion of the variable container 120 can be achieved by the pressure medium to be described below, and since the variable container 120 expands and contracts corresponding to the volume of the filled hydrogen, the variable container 120 can fill and discharge hydrogen at a uniform pressure.

[0071] The container assembly 110 may include a pressure vessel 130 .

[0072] The pressure container 130 may be formed in a hollow container shape, and the pressure container 130 may be formed in a cylindrical shape with both sides opened.

[0073] The pressure vessel 130 can be made of a material that is resistant to hydrogen embrittlement, or the interior of the pressure vessel 130 can be coated with a material that is resistant to hydrogen embrittlement, or an anti-brittle container can be overlapped and installed on the pressure vessel 130, and the anti-brittle container is made of a material that is resistant to hydrogen embrittlement and is tightly attached to the inner circumference of the pressure vessel 130.

[0074] The pressure container 130 may have a predetermined thickness to withstand high pressure or ultra-high pressure. At both ends of the opening of the pressure container 130 , container flange portions for preventing the container wire 131 from being separated, which will be described below, may be formed around both ends of the pressure container 130 .

[0075] The container assembly 110 may include a container filament 131 .

[0076] The vessel wire 131 is wound around the pressure vessel 130 to enhance the rigidity of the pressure vessel 130 .

[0077] The vessel wire 131 may be continuously wound around the pressure vessel 130 from one side of the pressure vessel 130 to the other side to enhance the pressure that the pressure vessel 130 withstands.

[0078] For example, the container wire 131 can be wound in a spiral form from one side of the pressure vessel 130 to the other side along the periphery of the pressure vessel 130, and then wound in a spiral form from the other side to one side, and repeated multiple times, so that the container wire 131 can be wound on the pressure vessel 130 in a multi-layer form.

[0079] At this time, the container wire 131 is wound between the container flange portions located on both sides of the pressure container 130 .

[0080] The container wire 131 may be a strong ferrous metal such as a piano wire or a non-ferrous metal wire to prevent corrosion.

[0081] Here, when the container wire 131 is wound around the pressure container 130, even if the pressure of the hydrogen filled inside the pressure container 130 exceeds the allowable pressure, the pressure container 130 will only crack and leak without exploding.

[0082] In addition, a vessel cover 133 may be further installed in the pressure vessel 130 , and the vessel cover 133 covers the vessel wire 131 in a state where the vessel wire 131 is wound around the pressure vessel 130 .

[0083] The container assembly 110 may include a container cap 140 .

[0084] The container caps 140 may be respectively installed at both ends of the opening of the pressure container 130 to seal both ends of the opening of the pressure container 130 .

[0085] A cover seal 142 for achieving airtightness may be installed between the container cover 140 and the pressure container 130, and the cover seal 142 may adopt a known high-pressure seal of various shapes having a structure capable of withstanding high pressure or ultra-high pressure and increasing adhesion by internal pressure.

[0086] The cover seal 142 has a ring shape and forms a sealing groove around the container cover 140. The cover seal 142 can be installed in the form of being inserted into the sealing groove. The cover seal 142 can be made of metal to withstand high pressure, and the cover seal 142 can be made of a material with resistance to hydrogen embrittlement to prevent hydrogen embrittlement.

[0087] A compression core 141 inserted into the inside of the variable container 120 may be formed in the container cover 140 located at the opening portion of the variable container 120 among the container covers 140 located at both sides of the pressure container 130 .

[0088] The compression core 141 is inserted into the opening portion of the variable container 120. When the variable container 120 contracts to the maximum extent, the compression core 141 occupies the internal space of the variable container 120. Therefore, when the variable container 120 contracts, the compression core 141 can discharge or compress all the hydrogen filled in the variable container 120.

[0089] A hydrogen inlet and outlet 143 may be formed through the container cover 140 formed with the compression core 141, and the hydrogen inlet and outlet 143 is used to fill hydrogen into the interior of the variable container 120 or discharge hydrogen from the interior of the variable container 120, and the hydrogen inlet and outlet 143 may be separately formed as a filling port for filling hydrogen and a discharge port for discharging the filled hydrogen, or as in the embodiment, hydrogen may be filled or discharged through one hydrogen inlet and outlet 143.

[0090] On the other hand, a medium inlet and outlet 145 can be formed through the container cover 140 located on both sides of the pressure container 130 and located in a position opposite to the opening position of the variable container 120, and the pressure medium is supplied through the medium inlet and outlet 145 to make the variable container 120 contract by the pressure medium.

[0091] The medium inlet and outlet 145 can be separately formed as a filling port for filling the pressure medium and a discharge port for discharging the filled pressure medium, or, as in the embodiment, the pressure medium can be supplied to the interior of the pressure vessel 130 or discharged from the pressure vessel 130 through a medium inlet and outlet 145.

[0092] In the embodiment, the medium inlet and outlet 145 is described as being formed in the container cover 140 , but the medium inlet and outlet 145 may also be formed in the pressure container 130 .

[0093] A cover flange portion is formed around the container cover 140 so that the container cover 140 can be mounted on the pressure container 130 in a form in which the cover flange portion is engaged with both ends of the pressure container 130 when the container cover 140 is coupled to the pressure container 130 .

[0094] The container cap 140 may be detachably coupled to the pressure container 130 , the container cap 140 may be pressurized and fixed on the pressure container 130 by the cap fixing jig 111 , and the container cap 140 may be separated from the pressure container 130 by removing the cap fixing jig 111 .

[0095] The cover fixing clamp 111 can be formed in a block form and can be fixed around the pressure vessel 130 by bolt fastening. The cover fixing clamp 111 can fix the container cover 140 on the pressure vessel 130 in the form of being clamped between the pressure vessel 130 and the container cover 140, and multiple cover fixing clamps 111 can be installed radially around the center of the pressure vessel 130.

[0096] The container cover 140 may also be coupled to the pressure container 130 in the form of a threaded connection without installing the cover fixing jig 111 .

[0097] like Figures 1 to 4 As shown, a volume-variable hydrogen container or a hydrogen compressor 100 with improved hydrogen embrittlement resistance according to an embodiment of the present invention may include a container frame 150 .

[0098] The container frame 150 may surround the circumference of the container assembly 110 to firmly support the container cover 140 , thereby preventing the container cover 140 from being separated from the pressure container 130 due to internal pressure.

[0099] The container frame 150 may be formed in the form of a square frame with a through center, and the container assembly 110 is inserted into the through center of the container frame 150 so as to firmly support the container cover 140 in the pressure container 130 in a form in which the container cover 140 is compressed on both sides.

[0100] The container frame 150 may include a yoke frame portion 151 and a side frame portion 153 .

[0101] The yoke frame parts 151 may be respectively located at outer sides of the container cover 140 sealing both sides of the pressure container 130 to prevent the container cover 140 from being separated from the pressure container 130 .

[0102] The yoke frame portion 151 may have a semicircular curved surface convex toward the outside of the container cover 140 .

[0103] A yoke cover 151 d that covers the frame wire 155 wound through the yoke frame part 151 from the outside may be installed on the yoke frame part 151 , and a yoke wire groove around which the frame wire 155 is wound may be formed at an outer circumference of the yoke frame part 151 .

[0104] The side frame parts 153 are located on both sides of the pressure container 130 in the circumferential direction thereof, and may be installed in the form of being connected to the yoke frame parts 151 supporting the container cover 140 on both sides of the pressure container 130 .

[0105] The length of the side frame portion 153 corresponds to the length of the pressure container 130 , so that the yoke frame portion 151 supporting the container cover 140 that seals the pressure container 130 can be closely attached to and connected to the container cover 140 .

[0106] In addition, a wire winding groove around which a frame wire 155 to be described below is wound may be formed on the outer side of each container frame 150 located at both sides of the pressure container 130 .

[0107] On the other hand, a hydrogen filling and exhaust port 151a is formed in the yoke frame portion 151 where the container cover 140 formed with the compression core portion 141 is located, and the hydrogen filling and exhaust port 151a is connected to the hydrogen inlet and outlet 143 formed in the container cover 140 to fill hydrogen into the interior of the container assembly 110 or discharge hydrogen from the container assembly 110.

[0108] In addition, a hydrogen control valve for controlling the inflow and outflow of hydrogen can be installed in the hydrogen filling and discharge port 151a or the hydrogen inflow and flow port 143. When the hydrogen control valve closes the hydrogen filling and discharge port 151a or the hydrogen inflow and flow port 143, the stored hydrogen can be compressed when the variable container 120 is compressed, and when the hydrogen control valve opens the hydrogen filling and discharge port 151a or the hydrogen inflow and flow port 143, the stored hydrogen can be discharged when the variable container 120 is compressed.

[0109] Here, in a state where hydrogen discharge is blocked by the hydrogen control valve, when the variable container 120 is compressed by the pressure medium, hydrogen can be compressed, and in a state where hydrogen discharge is opened by the hydrogen control valve, when the variable container 120 is compressed by the pressure medium, the hydrogen filled inside the variable container 120 can be discharged to the outside.

[0110] At this time, according to the control of the hydrogen control valve, when compressed hydrogen is discharged after being compressed, it can be used as a hydrogen compressor, and when hydrogen is filled and stored in the variable container 120 and then pressurized for discharge, it can be used as a hydrogen container.

[0111] On the other hand, a medium filling and exhaust port 151b may be formed in the yoke frame portion 151 where the container cover 140 without the compression core 141 is located, and the medium filling and exhaust port 151b is connected to the medium inlet and outlet 145 formed in the container cover 140 to fill the pressure medium into the container assembly 110 or discharge the pressure medium from the container assembly 110.

[0112] Here, the medium inflow and outflow port 145 may be located facing the blocked portion of the variable container 120 so that the pressure medium injected into the inside of the pressure container 130 can be pressurized in the direction in which the variable container 120 contracts.

[0113] The medium inlet and outlet 145 may be separately formed as a supply port for supplying the pressure medium to the container assembly 110 and a discharge port for discharging the pressure medium from the container assembly 110 , or the supply and discharge of the pressure medium may be achieved through one medium inlet and outlet 145 .

[0114] The container frame 150 may include a frame wire 155 .

[0115] The frame wire 155 may enhance the rigidity of the container frame 150 , and the frame wire 155 may be installed in the form of multiple layers surrounding the entire container frame 150 .

[0116] For example, the frame wire 155 can start from a yoke frame portion 151 through the side frame portion 153 located on one side, and then pass through another yoke frame portion 151 and the side frame portion 153 located on the other side in sequence, so that the frame wire 155 can be continuously and repeatedly wrapped around the entire container frame 150 through a certain yoke frame portion 151.

[0117] The frame wire 155 may be an iron wire such as a piano wire having strong rigidity or a non-iron wire having strong corrosion resistance.

[0118] In a state where the frame wire 155 is wound around the container frame 150 , a frame cover 157 may be installed around the container frame 150 to cover the outer circumference of the container frame 150 , and the frame cover 157 covers the frame wire 155 to prevent the frame wire 155 from being exposed to the outside.

[0119] The containment frame 150 may include a bracket 159 .

[0120] The support 159 may support the container frame 150 to be spaced apart from the ground, so that the hydrogen container or the hydrogen compressor 100 may be installed on the ground, or a plurality of hydrogen containers or hydrogen compressors 100 may be stacked and installed.

[0121] A plurality of brackets 159 may be installed on the container frame 150 , and the brackets 159 may fix the hydrogen container or the hydrogen compressor 100 vertically, or may fix the hydrogen container or the hydrogen compressor 100 in a horizontally placed state as in the embodiment.

[0122] like Figure 4 As shown, the variable-volume hydrogen container or hydrogen compressor 100 with improved hydrogen embrittlement resistance according to an embodiment of the present invention may include a medium supply device 170 .

[0123] The medium supply device 170 may inject the pressure medium into the interior of the pressure vessel 130 to provide a pressurizing force for compressing the variable container 120 to compress or discharge the hydrogen.

[0124] The pressure medium may be a fluid such as water or oil, a gas such as an inert gas, a gas having a compression ratio similar to that of hydrogen, or hydrogen.

[0125] The pressure medium is injected between the variable container 120 and the pressure container 130 to reduce the pressure difference in the pressure container 130 caused by filling the variable container 120 with hydrogen, thereby preventing the variable container 120 from being damaged and providing a compressive force forcing the variable container 120 to compress and expand.

[0126] The pressure medium can be supplied to the interior of the container assembly 110 at a pressure higher than the pressure of the hydrogen filled in the variable container 120 through the medium inlet and outlet 145 of the container assembly 110 or the medium filling and discharge port 151b formed in the yoke frame portion 151, and the hydrogen filled in the variable container 120 can be compressed in the form of forced pressurization of the variable container 120 or the hydrogen filled in the variable container 120 can be forcibly discharged.

[0127] The pressure medium may increase the amount of the charged hydrogen by lowering the temperature of the charged hydrogen according to the temperature of the pressure medium.

[0128] As described above, when the variable container 120 is pressurized by the pressure medium to discharge hydrogen, the hydrogen filled in the variable container 120 can be uniformly discharged at a constant pressure without changing the pressure until all the hydrogen filled in the variable container 120 is discharged.

[0129] In addition, when hydrogen is supplied while the variable container 120 is compressed, the variable container 120 expands, so that the pressure medium supplied to the pressure container 130, that is, the pressure medium filled in the container assembly 110, can be discharged from the pressure container 130 through the medium inlet and outlet 145 or the medium filling and discharge outlet 151b.

[0130] The medium supply device 170 may further include a cooler 171 that reduces the temperature of the pressure medium.

[0131] The cooler 171 lowers the temperature of the pressure medium and supplies it to the inside of the pressure vessel 130, and thus can prevent the hydrogen filled in the container assembly 110 from expanding due to the temperature, and can also perform a heat preservation function of the hydrogen.

[0132] A medium control valve for controlling the discharge of pressure medium is installed in the medium inlet and outlet 145 or the medium filling and discharge outlet 151b, so that the pressure of hydrogen filled in the variable container 120 can be adjusted by adjusting the discharge pressure of the pressure medium according to the opening of the medium control valve.

[0133] For example, when the opening degree of the medium control valve is small, since the discharge resistance of the pressure medium is relatively large, the pressure of the hydrogen gas filled in the variable container 120 can be increased.

[0134] In addition, when the medium inlet and outlet 145 is divided into a medium inlet and a medium outlet, the medium control valve can be divided into a medium inlet valve and a medium outlet valve, wherein the medium inlet valve is installed in the medium inlet to control the inflow of the pressure medium, and the medium outlet valve is installed in the medium outlet to control the discharge of the pressure medium.

[0135] like Figures 2 to 5 As shown, a variable-volume hydrogen container or a hydrogen compressor 100 with improved hydrogen embrittlement resistance according to an embodiment of the present invention may include an embrittlement blocking member 160 .

[0136] The brittle blocking member 160 may be coupled to the container cap 140 to prevent hydrogen embrittlement of the container cap 140 that contacts hydrogen gas.

[0137] The brittle breaking member 160 can be installed on the container cover 140 that seals the opening portion of the variable container 120, and the brittle breaking member 160 can be installed in an overlapping manner on the innermost surface of the variable container 120 in the compression core 141 of the container cover 140 inserted into the opening portion of the variable container 120, or the brittle breaking member 160 can be installed in the form of covering the compression core 141 as a whole.

[0138] Here, since the compressed core 141 has a relatively thick thickness in the container cover 140 , the permeated hydrogen gas is retained in the compressed core 141 , so that the container cover 140 may be prevented from being damaged due to the occurrence of hydrogen embrittlement.

[0139] In the embodiment, the frangible breaking member 160 is shown to be installed only on the container cap 140 formed with the compression core 141 in the container cap 140 on both sides of the pressure vessel 130, but the frangible breaking member 160 can also be installed on the container cap 140 not formed with the compression core 141.

[0140] The brittle blocking member 160 may function to block hydrogen from permeating the container cap 140 , and may also function to release pressure applied to the container cap 140 when compressing, filling, or discharging hydrogen.

[0141] For example, since atmospheric pressure acts between the container cover 140 and the brittle blocking member 160 through the hydrogen discharge hole 163, and relatively high-pressure hydrogen pressure acts on the inside of the variable container 120, the brittle blocking member 160 can function to block the hydrogen pressure acting on the container cover 140 side.

[0142] On the other hand, a permeated hydrogen gas discharge hole 163 may be formed through the container cover 140 , and the external atmospheric pressure discharges the hydrogen gas that permeates the fragile blocking member 160 to the outside through the permeated hydrogen gas discharge hole 163 .

[0143] A hydrogen permeation discharge hole 163 may be formed through the container cover 140. The hydrogen permeation discharge hole 163 may be formed through the outside to between the brittle blocking member 160 and the container cover 140, so that hydrogen permeating the brittle blocking member 160 is discharged to the outside through the hydrogen permeation discharge hole 163 without flowing into the container cover 140, thereby preventing hydrogen embrittlement caused by hydrogen permeating into the container cover 140.

[0144] The permeated hydrogen discharge hole 163 may also be a fastening member 167 hole, through which a fastening member 167 such as a bolt is installed, and when the brittle blocking member 160 overlaps the container cover 140, the fastening member 167 penetrates the container cover 140 to couple the brittle blocking member 160 to the container cover 140.

[0145] The permeated hydrogen gas discharge hole 163 may be located not only at a position where the container cover 140 and the brittle blocking member 160 face each other, but also may penetrate the container cover 140 between the container cover 140 and the inner circumference of the pressure container 130 and communicate with the outside.

[0146] At this time, the hydrogen gas that permeates the fragile blocking member 160 moves between the container cover 140 and the inner circumference of the pressure container 130 through the gap between the container cover 140 and the fragile blocking member 160 and is discharged to the outside through the permeated hydrogen gas discharge hole 163 .

[0147] In addition, a pressure ball valve for adjusting the opening of the permeated hydrogen discharge hole 163 may be installed in the permeated hydrogen discharge hole 163. Since the amount of hydrogen discharged through the permeated hydrogen discharge hole 163 is negligible, it may be discarded to the outside, or a catalyst carrier filter may be installed and the discharge to the outside may be prevented by filtering through the catalyst carrier filter, or it may be stored in a storage container by connecting a separate storage container.

[0148] The brittle blocking member 160 may be made of a material having resistance to hydrogen embrittlement, or may have a hydrogen embrittlement resistant coating in which a material having resistance to hydrogen embrittlement is coated on a surface in contact with hydrogen.

[0149] In addition, the thickness of the fragile blocking member 160 may be less than 1 / 3 of the thickness of the thickest portion of the container cover 140 .

[0150] Here, when the thickness of the brittle blocking member 160 exceeds 1 / 3 of the thickness of the container cover 140, hydrogen cannot penetrate the brittle blocking member 160 and is retained, and hydrogen embrittlement is likely to occur. Moreover, due to the large volume of the brittle blocking member 160, the volume of the variable container 120 filled with hydrogen becomes relatively small.

[0151] On the contrary, when the thickness of the brittle blocking member 160 is less than 1 / 3 of the thickness of the container cover 140, due to the high internal pressure of the variable container 120, hydrogen can penetrate the brittle blocking member 160 without being retained inside the brittle blocking member 160, and the volume of the variable container 120 occupied by the brittle blocking member 160 can be reduced, so that a relatively large amount of hydrogen can be stored.

[0152] In addition, an external pressure acting groove 165 may be formed on a surface of the container cap 140 combined with the fragile blocking member 160 , and external pressure may act on the external pressure acting groove 165 to guide hydrogen to be discharged through between the container cap 140 and the fragile blocking member 160 .

[0153] Here, since the external pressure acting groove 165 is located on the interface between the container cover 140 and the brittle blocking member 160 , the external atmospheric pressure can act on the external pressure acting groove 165 by penetrating the gap of the interface between the hydrogen discharge hole 163 , the container cover 140 and the brittle blocking member 160 .

[0154] The inner surface of the external pressure groove 165 is coated with a material that is resistant to hydrogen embrittlement to prevent the hydrogen gas flowing into the external pressure groove 165 from penetrating into the interior of the container cover 140, or a brittle prevention groove cover (not shown) can be installed, which has a shape corresponding to the external pressure groove 165 and is assembled to the inner side of the external pressure groove 165, and the brittle prevention groove cover is made of a material that is resistant to hydrogen embrittlement.

[0155] The external pressure acting groove 165 can be formed in the form of a flow channel on the surface of the container cover 140 facing the brittle blocking member 160, the surface of the brittle blocking member 160 facing the container cover 140, or the surfaces of the brittle blocking member 160 and the container cover 140, or the external pressure acting groove 165 can be formed in the container cover 140 in the form of a groove of any shape.

[0156] Another example of the external pressure acting groove 165 may be formed on the surface of the container cover 140 facing the fragile blocking member 160 or the surface of the fragile blocking member 160 facing the container cover 140 or the surfaces of the fragile blocking member 160 and the container cover 140 in the form of irregular or regular concave-convex surfaces.

[0157] The frangible blocking member 160 may include a blocking member seal 161 .

[0158] The blocking member sealer 161 is installed around the fragile blocking member 160 to block the stored hydrogen from flowing out through between the periphery of the fragile blocking member 160 and the pressure container 130 or between the periphery of the fragile blocking member 160 and the variable container 120 .

[0159] The blocking member seal 161 may be formed in a ring shape and may be made of, or coated with, a material having resistance to hydrogen embrittlement. The blocking member seal 161 may be implemented in the form of known high pressure seals of various shapes capable of withstanding high hydrogen pressure.

[0160] A blocking member seal 161 may be installed around a surface of the fragile blocking member 160 that faces hydrogen to prevent hydrogen from flowing out.

[0161] On the other hand, since the container cover 140 is protected from hydrogen embrittlement by the brittle blocking member 160 to be described below, the container cover 140 can be made of a material that is not resistant to hydrogen embrittlement, and the container cover 140 can be made of a material that has relatively higher strength than the material that is resistant to hydrogen embrittlement, thereby improving durability while reducing manufacturing costs.

[0162] Hereinafter, the actions and effects between the respective configurations will be described.

[0163] The variable-volume hydrogen container or hydrogen compressor 100 with improved hydrogen embrittlement resistance according to the embodiment of the present invention can fill hydrogen into the container assembly 110 , and can compress the hydrogen inside the container assembly 110 or discharge the hydrogen.

[0164] The container assembly 110 is configured such that a variable container 120 having a variable volume is inserted into the interior of a pressure container 130 , and both ends of the pressure container 130 are sealed by a container cover 140 .

[0165] The variable container 120 is formed in a bellows form in which a plurality of annular plates 121 are alternately joined to inner and outer circumferences of the annular plates 121 along a stacking direction thereof, and one end of the variable container 120 is sealed and the other end is open.

[0166] The variable container 120 is inserted into the interior of the pressure container 130 , both ends of the opening of the pressure container 130 are sealed by the sealing caps 140 , and the container wire 131 is wound around the pressure container 130 to enhance the pressure resistance of the variable container 130 .

[0167] In addition, the container cover 140 is fixed and supported by the cover fixing jig 111 to prevent the container cover 140 from being easily separated from the pressure container 130 , and the cover fixing jig 111 may be located at a portion not supported by the yoke frame portion 151 of the container frame 150 .

[0168] A compression core 141 is formed in the container cover 140 located at the opening portion of the variable container 120 among the container covers 140 sealing both ends of the pressure container 130 , and is inserted and located inside the variable container 120 .

[0169] The compression core 141 is not formed in the container cover 140 located in the sealed portion of the variable container 120 , and only the pressure container 130 is sealed.

[0170] In addition, a fragile blocking member 160 is installed on the container cover 140 , and the fragile blocking member 160 is installed to surround the compression core 141 and cover a direction facing the variable container 120 .

[0171] A blocking member seal 161 is installed between the brittle blocking member 160 and the variable container 120 at the portion where the brittle blocking member 160 contacts the pressure container 130 . The blocking member seal 161 is used to block hydrogen from flowing out between the variable container 120 and the brittle blocking member 160 or between the pressure container 130 and the brittle blocking member 160 .

[0172] A hydrogen permeation discharge hole 163 is formed through the container cover 140, and the hydrogen permeation discharge hole 163 is formed through the portion in contact with the brittle blocking member 160 or the periphery in contact with the pressure vessel 130, so that the hydrogen permeating the brittle blocking member 160 is discharged to the outside without penetrating into the inside of the container cover 140, and the hydrogen permeation discharge hole 163 can also be a fastening member 167 hole fastened by a fastening member 167 such as a bolt, and the fastening member 167 passes through the container cover 140 and is fastened to fix the container cover 140 and the brittle blocking member 160.

[0173] In addition, an external pressure acting groove 165 for collecting and discharging hydrogen permeating the fragile blocking member 160 into the permeated hydrogen gas discharging hole 163 may be formed at a portion where the container cover 140 and the fragile blocking member 160 face each other.

[0174] The permeated hydrogen gas discharge hole 163 is connected to the external pressure acting groove 165 , and the external pressure acts on the external pressure acting groove 165 to discharge the hydrogen gas permeating the fragile blocking member 160 to the outside, thereby preventing the container cap 140 from hydrogen embrittlement.

[0175] On the other hand, the container assembly 110 is fixed by the container frame 150, thereby preventing the container cover 140 from being separated and enhancing strength.

[0176] The container frame 150 is composed of a yoke frame portion 151 and a side frame portion 153 .

[0177] The container assembly 110 is supported by a yoke frame portion 151 having a curved surface convex toward the outside of the container cover 140 .

[0178] The yoke frame parts 151 located at both sides of the container assembly 110 are supported by the side frame parts 153 , so that the container assembly 110 is supported by the container frame 150 as if the container assembly 110 is inserted inside the quadrangular container frame 150 .

[0179] The container assembly 110 and the container frame 150 may be detachably coupled by a detachable portion (not shown).

[0180] Here, when the container assembly 110 is detachably coupled to the container frame 150 through the detachable portion, the container assembly 110 may be separated from the container frame 150 and inspected or replaced when the container frame 150 or the container assembly 110 is damaged or internal cracks of the container assembly 110 are inspected.

[0181] On the other hand, the medium supply device 170 is connected to one side of the container assembly 110, and the pressure medium is supplied from the medium supply device 170 to the inside of the pressure container 130, and the variable container 120 is forcibly pressurized by the pressure of the pressure medium to compress or discharge the hydrogen.

[0182] At this time, the pressure medium is supplied to the inside of the pressure container 130 through the container cover 140 corresponding to the sealed portion of the variable container 120 to pressurize the sealed portion of the variable container 120 .

[0183] Here, a hydrogen control valve for opening and closing the discharge of hydrogen may be installed in the hydrogen filling and discharge port 151a or the hydrogen inlet and flow port 143. If pressure medium is continuously supplied with the hydrogen control valve closing the hydrogen filling and discharge port 151a or the hydrogen inlet and flow port 143, the variable container 120 is compressed, thereby compressing the hydrogen. If pressure medium is supplied with the hydrogen control valve open, the variable container 120 is compressed, thereby discharging the stored hydrogen.

[0184] When the hydrogen inflow and outflow port 143 is separated into a hydrogen inlet and a hydrogen outlet, the hydrogen control valve can be separated into a hydrogen inflow valve for controlling the inflow of hydrogen and a hydrogen discharge valve for controlling the discharge of hydrogen.

[0185] On the other hand, a cooler 171 can be installed in the medium supply device 170, and the pressure medium can be supplied after being cooled by the cooler 171 to reduce the temperature of the hydrogen filled in the variable container 120, thereby preventing the volume of the hydrogen from expanding due to temperature, or the filling amount of the hydrogen can be increased by minimizing the volume of the hydrogen.

[0186] According to the variable volume hydrogen container or hydrogen compressor 100 with improved resistance to hydrogen embrittlement configured as described above in an embodiment of the present invention, when pressure medium is supplied to the container assembly 110, the variable container 120 contracts and the hydrogen inside the variable container 120 is compressed or discharged. When hydrogen is injected, the pressure medium is discharged from the container assembly 110, the variable container 120 expands and hydrogen is injected.

[0187] At this time, the pressure of the hydrogen gas filled in the variable container 120 may be controlled in the form of controlling the discharge amount of the pressure medium supplied to the container assembly 110 through the medium control valve.

[0188] On the other hand, when the hydrogen gas filled in the variable container 120 is discharged or compressed, the pressure medium is supplied from the medium supply device 170 to the container assembly 110 .

[0189] When the pressure medium is supplied to the container assembly 110 , the pressure medium pressurizes the variable container 120 , and the hydrogen filled in the variable container 120 is discharged to the outside of the container assembly 110 through the hydrogen inflow and outflow port 143 and the hydrogen filling and exhaust port 151 a .

[0190] At this time, the hydrogen may be compressed to be discharged or the uncompressed hydrogen may be directly discharged according to the opening degree of the hydrogen control valve installed in the hydrogen inflow and outflow port 143 or the hydrogen filling and exhaust port 151a.

[0191] Although the hydrogen can be compressed and discharged or the uncompressed hydrogen can be directly discharged according to the opening of the hydrogen control valve, the discharge speed of the hydrogen can also be adjusted according to the pressure of the pressure medium pressurizing the variable container 120 or the supply speed of the pressure medium.

[0192] In addition, when the variable container 120 is pressurized by the pressure medium while the hydrogen discharge valve is closed, the hydrogen is compressed inside the variable container 120, and when the hydrogen discharge valve is opened while the hydrogen is compressed, the compressed hydrogen can be discharged, so it can be used as a hydrogen compressor.

[0193] When hydrogen is stored in a compressed state or kept in an uncompressed state in the variable container 120, it can be used as a hydrogen container.

[0194] As described above, when the variable container 120 is pressurized by the pressure medium to discharge hydrogen, the volume occupied by the remaining hydrogen is uniformly proportional to the remaining amount of hydrogen, so the filled hydrogen can be discharged at a constant pressure until all the filled hydrogen is discharged.

[0195] On the other hand, when the variable container 120 contracts, the hydrogen is compressed, and the pressure of the hydrogen applied to the compression core 141 located inside the variable container 120 is high, so the hydrogen may penetrate into the interior of the compression core 141. However, in the present invention, since a brittle blocking component 160 is installed on the outer surface of the compression core 141, the hydrogen is blocked from penetrating into the compression core 141.

[0196] In addition, due to the pressure of the hydrogen filled inside the variable container 120, the hydrogen that penetrates the brittle blocking member 160 moves to the external pressure application groove 165 through the gap between the brittle blocking member 160 and the container cover 140, and the hydrogen that flows into the external pressure application groove 165 is discharged to the outside through the permeated hydrogen exhaust hole 163.

[0197] As described above, by installing the brittle blocking member 160 on the container cover 140, the brittle blocking member 160 can prevent hydrogen from penetrating into the container cover 140 for the first time, and the hydrogen that penetrates the brittle blocking member 160 is discharged to the outside through the permeated hydrogen discharge hole 163, thereby secondarily preventing hydrogen embrittlement caused by hydrogen penetrating into the container cover 140.

[0198] On the other hand, when the container assembly 110 is cracked, the container assembly 110 is regularly inspected, or the container frame 150 is damaged and needs to be separated for replacement, the container assembly 110 can be replaced or removed for inspection after separating the container assembly 110 from the container frame 150 through the detachable part.

[0199] In addition, a bracket 159 is installed on the container frame 150, so that the container assembly 110 can be fixed vertically, or the container assembly 110 can be fixed in a horizontal position, and multiple hydrogen containers or hydrogen compressors 100 can also be stacked and installed.

[0200] Therefore, according to the variable volume hydrogen container or hydrogen compressor 100 with improved resistance to hydrogen embrittlement according to an embodiment of the present invention, a variable container 120 is installed inside the pressure vessel 130, and the volume of the variable container 120 can be changed according to the capacity of the hydrogen filled, so that hydrogen can be filled or discharged at a uniform pressure, and the variable container 120 can be pressurized by a pressure medium to discharge the hydrogen, so that the filled hydrogen can be discharged at a uniform pressure until all the filled hydrogen is discharged.

[0201] In addition, a brittle blocking member 160 is installed at the portion of the container cover 140 that contacts hydrogen, so that hydrogen can be prevented from penetrating into the container cover 140 through the brittle blocking member 160, thereby preventing hydrogen embrittlement, and the hydrogen that penetrates the brittle blocking member 160 is discharged to the outside through the penetrated hydrogen discharge hole 163 in the container cover 140, thereby preventing hydrogen embrittlement caused by the hydrogen that penetrates the brittle blocking member 160 penetrating into the container cover 140.

[0202] In addition, since the brittle blocking member 160 is installed, the container cover 140 can be made of a material that is not resistant to hydrogen embrittlement, thereby reducing manufacturing costs, and the container cover 140 can be made of a material with higher strength than the material resistant to hydrogen embrittlement, thereby improving durability.

[0203] In addition, the container assembly 110 is supported on the container frame 150 to improve the durability of the container assembly 110, and the container wire 131 is wound around the pressure vessel 130, and the frame wire 155 is wound around the container frame 150 to further improve the durability, so that hydrogen can be stored under high pressure and ultra-high pressure, and the container assembly 110 can be prevented from exploding due to the pressure of the hydrogen.

[0204] In addition, the container assembly 110 is detachably coupled to the container frame 150 through the detachable portion, so that the container assembly 110 can be easily replaced and inspected.

[0205] In addition, by installing the bracket 159 on the container frame 150, a plurality of hydrogen containers or hydrogen compressors 100 may be stacked and installed, thereby minimizing the installation space.

[0206] Although the embodiments of the present invention have been described above, the scope of rights of the present invention is not limited thereto, and includes all changes and modifications that those skilled in the art can easily change to the embodiments of the present invention and that are considered to be within the scope of equivalence.

Claims

1. A variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance, characterized in that: include: A variable container that expands when filled with hydrogen, or contracts to compress or discharge the hydrogen; A pressure container having two or one open ends and accommodating the variable container; A container wire, wound along the radial direction of the pressure container to enhance the rigidity of the pressure container; A container cover for sealing an opening portion of the pressure container; a container frame, surrounding the periphery of the container assembly to which the container cover is coupled to the pressure container and supporting the container assembly to prevent the container cover from being separated from the pressure container; A frame wire, wound around the container frame to enhance the rigidity of the container frame; a brittle blocking member overlapped on the container cover to block hydrogen from penetrating into the container cover due to the internal pressure of the variable container or the pressure container; as well as The hydrogen gas permeation hole is used to discharge the hydrogen gas permeated through the brittle blocking member to the outside before the hydrogen gas flows into the container cover.

2. The variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance according to claim 1, characterized in that: include: An external pressure acting groove is formed between the container cover and the brittle blocking member, and external pressure acts on the external pressure acting groove through the permeated hydrogen gas discharge hole.

3. The variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance according to claim 1, characterized in that: The external pressure acting groove is formed in a concavo-convex form on the container cover or the fragile blocking member.

4. The variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance according to claim 1, characterized in that: The brittle blocking member is made of a material having resistance to hydrogen embrittlement, or is coated with a material having resistance to hydrogen embrittlement. The container cover is made of a material that is not resistant to hydrogen embrittlement.

5. The variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance according to claim 1, characterized in that: The frangible blocking member includes a blocking member seal installed at an edge of the frangible blocking member to prevent hydrogen from flowing out through between the pressure vessel and the frangible blocking member or between the variable vessel and the frangible blocking member.

6. The variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance according to claim 1, characterized in that: The container cover includes a gas-tight seal that forms a gas-tight seal between the container cover and the pressure vessel to prevent hydrogen from escaping.

7. The variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance according to claim 1, characterized in that: include: A filling nozzle is installed through the container cover and the brittle blocking member to fill hydrogen into the interior of the variable container.

8. The variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance according to claim 1, characterized in that: The container cover includes a compression core, which is inserted into the interior of the variable container to pressurize the filled hydrogen when the variable container is contracted. The frangible blocking member is installed to surround the circumference of the compression core.

9. The variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance according to claim 1, characterized in that: The container framework includes: a yoke frame portion, located outside each of the container covers to support the container covers, and having a semicircular curved surface convex to the outside; and The side frame parts are located at both side ends of the pressure vessel across the pressure vessel and support the yoke frame part.

10. The variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance according to claim 1, characterized in that: The variable container is formed by stacking a plurality of annular plate stacks and joining the plurality of annular plate stacks in a bellows form.

11. The variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance according to claim 1, characterized in that: include: A pressure medium is supplied between the variable container and the pressure container to compress or discharge the filled hydrogen by pressurizing the variable container.

12. The variable volume hydrogen container or hydrogen compressor with improved hydrogen embrittlement resistance according to claim 1, characterized in that: The container frame includes a bracket that supports the container assembly from the ground.

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