Gas valve for hydrogen storage

Abstract

The invention relates to the technical field of hydrogen storage, in particular to a hydrogen storage gas valve which comprises a valve body provided with a valve element cavity, a valve seat cavity and a first gas channel, the valve element cavity comprises a first cavity section and a second cavity section, the section of the first cavity section is larger than that of the second cavity section, and the valve body is provided with a second gas channel communicated with the outside; the valve element is arranged in the valve element cavity, the valve element comprises a valve block and a limiting end, and the valve element is provided with a third air channel; the valve seat is in sealing fit with the valve seat cavity, the valve seat is provided with a vent hole communicated with the first air channel and the second cavity section, the valve seat can move close to or away from the valve element in the valve seat cavity, a second elastic piece is arranged between the valve seat and the valve body, and the second elastic piece provides force for the valve seat to face the direction of the valve element; when the valve seat moves towards the valve element to a set position, the valve block can abut against the valve seat to seal the vent hole. According to the invention, the mounting structures of the valve core and the valve seat are optimally designed, so that the existing problems are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen storage, and in particular to a gas valve for hydrogen storage. Background Art

[0002] As an important clean energy, hydrogen energy has been increasingly developed and utilized in recent years. The storage and release of hydrogen are key links. When hydrogen storage containers are inflated and deflated, special gas valves are required to control the gas path. Since hydrogen storage containers have high gas pressure, reducing the high-pressure impact of the gas during inflation and deflation is a key technology.

[0003] The prior patent with application number 201711346991.9 discloses an integrated pressure reducing valve, which reduces the outlet pressure by cooperating with a two-stage pressure reducing valve. The prior gas valve adopts a two-stage pressure increasing valve structure to control the gas pressure, which has a relatively complex structure and poor stability in use. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a gas valve for hydrogen storage, which effectively solves the existing problems by optimizing the design of the installation structure of the valve core and the valve seat.

[0005] In order to solve the above problems, the present invention provides a gas valve for hydrogen storage, comprising: a valve body, provided with a valve core cavity, a valve seat cavity connected to the valve core cavity, and a first air channel connected to the valve seat cavity on a side away from the valve core cavity, the valve core cavity comprising a first cavity section, and a second cavity section connected to the first cavity section facing the valve seat cavity, the cross-section of the first cavity section is larger than the cross-section of the second cavity section, and the valve body is provided with a second air channel connected to the outside at one end of the second cavity section facing the valve seat cavity; a valve core, the valve core is arranged in the valve core cavity, the valve core comprises a valve block, a limiting end connected to the valve block on a side away from the valve seat cavity, the valve block is sealed with the second cavity section, and the limiting end is sealed with the first cavity section. In cooperation, the valve core is provided with a third air channel, one end of the third air channel is connected with the second air channel, and the other end is connected with the side of the limit end away from the valve seat, and the valve core can move closer to or away from the valve seat in the valve core cavity; the valve seat, the valve seat is sealed and cooperated with the valve seat cavity, the valve seat is provided with an air vent connecting the first air channel and the second cavity section, and the valve seat can move closer to or away from the valve core in the valve seat cavity, and a second elastic member is provided between the valve seat and the valve body, and the second elastic member provides a force for the valve seat toward the valve core; wherein, when the valve seat moves toward the valve core to a set position, the valve block can abut against the valve seat to close the air vent.

[0006] Furthermore, a gas gathering groove is provided on the side of the limiting end away from the valve seat, and the limiting end can move to the edge of the gas gathering groove to abut against the bottom wall of the first cavity section.

[0007] Furthermore, a first elastic member is provided between the valve core and the valve body, and the first elastic member provides a force for the valve core to move away from the valve seat.

[0008] Furthermore, the ventilation hole includes a first hole segment connected to the second cavity segment, and a second hole segment connected to the first hole segment and the first air channel, and a cross-section of the second hole segment is larger than a cross-section of the first hole segment.

[0009] Furthermore, the second elastic member includes a spring arranged in the second hole segment.

[0010] Furthermore, an air guiding gap is provided between an inner wall of a section of the second cavity section facing the valve seat cavity and the valve block, and the third air channel is connected to the air guiding gap.

[0011] Furthermore, the valve block comprises a valve block body communicated with the limit end, and a core block body installed in a section of the valve block body facing the valve seat, and the core block body can close the vent hole of the valve seat.

[0012] Furthermore, the valve body comprises: A lower shell, wherein the lower shell has the first air passage and the valve seat cavity; The upper shell assembly includes an upper shell and a shell cover, wherein the upper shell is connected to the lower shell on one side of the valve seat cavity, the upper shell is provided with the second cavity section, and the shell cover is buckled on the side of the upper shell away from the valve seat cavity, and the shell cover and the upper shell enclose the first cavity section.

[0013] Furthermore, the upper shell includes an outer ring portion and an inner ring portion arranged on the inner side of the outer ring portion, the outer ring portion and the bottom of the inner ring portion are connected, the inner side of the inner ring portion forms the second cavity section, an annular cavity is formed between the outer ring portion and the inner ring portion, and the outer ring portion is provided with a balancing air hole connecting the annular cavity and the outside world.

[0014] Furthermore, a spring is provided in the annular cavity, and the spring supports the limiting end.

[0015] The beneficial effect of the present invention is that the existing problems are effectively solved by optimizing the design of the installation structure of the valve core and the valve seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the structure of an embodiment of the present invention in a closed state.

[0017] Figure 2 for Figure 1 The illustrated embodiment is a schematic structural diagram of the embodiment in an inflated state.

[0018] Figure 3 for Figure 1 The illustrated embodiment is a schematic structural diagram of a deflated state.

[0019] Figure 4 for Figure 3 Structural schematic diagram of the valve port structure at the moment of closing in the state shown.

[0020] Among them: 1. valve seat cavity; 2. valve core cavity; 201, first cavity section; 202, second cavity section; 3. first air channel; 4. valve block; 401, valve block body; 402, core block body; 5. limit end; 6. second air channel; 7. third air channel; 8. valve seat; 9. air vent; 901, first hole section; 902, second hole section; 10. second elastic member; 11. air gathering groove; 12. first elastic member; 13. air guide gap; 14. lower shell; 15. upper shell; 1501, outer ring; 1502, inner ring; 16. shell cover; 17. balance air hole; 18. valve mouth structure. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0022] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0023] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are only connected to form a whole through a connecting structure. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0026] In the present invention, Figures 1 to 4As shown, a gas valve for hydrogen storage is provided, comprising: a valve body, provided with a valve core cavity 2, a valve seat cavity 1 communicated with the valve core cavity 2, a first air channel 3 communicated with the valve seat cavity 1 on a side away from the valve core cavity 2, the valve core cavity 2 comprising a first cavity section 201, a second cavity section 202 communicated between the first cavity section 201 and the valve seat cavity 1, the cross section of the first cavity section 201 is larger than the cross section of the second cavity section 202, and the valve body is provided with a second air channel 6 communicated with the outside at one end of the second cavity section 202 facing the valve seat cavity 1; a valve core, the valve core is arranged in the valve core cavity 2, the valve core comprises a valve block 4, a limiting end 5 connected to the valve block 4 on a side away from the valve seat cavity 1, the valve block 4 is sealed with the second cavity section 202, and the limiting end 5 is sealed with the first cavity section 201 Sealed cooperation, the valve core is provided with a third air channel 7, one end of the third air channel 7 is connected with the second air channel 6, and the other end is connected with the side of the limit end 5 away from the valve seat 8, and the valve core can move closer to or away from the valve seat 8 in the valve core cavity 2; the valve seat 8, the valve seat 8 is sealed and cooperated with the valve seat cavity 1, the valve seat 8 is provided with an air vent 9 connecting the first air channel 3 and the second cavity section 202, and the valve seat 8 can move closer to or away from the valve core in the valve seat cavity 1, and a second elastic member 10 is provided between the valve seat 8 and the valve body, and the second elastic member 10 provides a force for the valve seat 8 toward the valve core; wherein, when the valve seat 8 moves toward the valve core to a set position, the valve block 4 can abut against the valve seat 8 to close the air vent 9.

[0027] When the present invention is used, Figures 1 to 4 As shown, the first gas channel 3 is connected to the hydrogen storage container, and the second gas channel 6 is provided with a valve port structure 18 connected to external gas charging and discharging equipment.

[0028] In the gas storage state, since the cross-section of the first cavity section 201 is larger than that of the second cavity section 202, the pressure on the upper and lower sides of the valve core is consistent (the third air channel 7 connects the upper and lower parts of the valve core), and the valve core as a whole is pressed down by the gas pressure until it contacts the valve seat 8. At this time, the valve block 4 of the valve core closes the air hole 9, and the entire gas valve is closed twice in the gas storage state through the closure between the valve core and the valve seat 8 and the valve port structure 18 connecting the second air channel with the external gas charging and discharging equipment, so as to improve the stability of the closure of the hydrogen storage container.

[0029] In the inflated state, the second air channel 6 is connected to the external inflatable equipment, and the high-pressure gas enters the second cavity section 202 and the valve seat cavity 1. The valve seat 8 is pushed downward in the valve seat cavity 1 and separated from the valve core. At this time, the inflated high-pressure gas enters the vent 9 and the first air channel 3. Part of the inflated high-pressure gas enters the upper side of the limit end 5 through the third air channel 7, and the valve core is further pushed downward in the valve core cavity 2. After the inflation is completed, the second air channel 6 is separated from the external inflatable equipment and closed at the moment. At this time, under the push of the second elastic member 10 and the gas pressure in the first air channel 3, the valve seat 8 moves upward and contacts the valve block 4, so that the valve block 4 closes the vent 9. When the valve seat 8 contacts the valve block 4 upward, since the valve block 4 has a certain movable space in the first cavity section 201, the valve core can move upward to reduce the impact between the valve seat 8 and the valve block 4.

[0030] During the deflation operation, the valve port structure 18 of the second air channel 6 is opened. When the valve seat 8 has not moved to the upper limit position, the valve block 4 moves upward under the action of the high-pressure gas in the first air channel 3. At the same time, the high-pressure gas in the vent hole 9 pushes the valve block 4 upward, so that the valve block 4 gradually separates from the valve seat 8 to open the vent hole 9. The high-pressure gas in the gas storage container is released to the second cavity section 202 through the small gap between the valve block 4 and the valve seat 8, and then enters the second air channel 6 to achieve decompression release. After the valve core gradually moves to the upper limit position, the outlet pressure of the second air channel 6 gradually stabilizes. After the valve port structure 18 of the second air channel 6 is closed to complete the deflation, the pressure on the upper side of the limit end 5 of the valve core is close to the pressure on the lower side of the valve block 4 (after the valve port structure 18 is closed, the pressure on the upper side of the valve core increases). At this time, the pressure on the upper side of the valve core is greater than the pressure on the bottom of the valve block 4. The valve core moves downward rapidly, and the valve block 4 contacts the valve seat 8 and closes the vent hole 9. In this process, if Figure 4 As shown, since the valve seat 8 adopts a non-fixed valve seat 8, the valve seat 8 has space for downward compression and movement, so that when the valve block 4 closes the valve seat 8, the valve seat 8 can move downward to remove the high impact between the valve block 4 and the valve seat 8, thereby reducing the impact loss between the valve seat 8 and the valve core, and further improving the stability of the entire valve.

[0031] It is not difficult to see that the present invention, through a relatively simple valve core and valve seat 8 structure, can realize gas circulation operation through an air path at the position of the valve seat 8 during inflation and deflation. The structure is simple, and the valve seat 8 adopts a non-fixed valve seat 8, which can unload the impact pressure of the valve core when the valve core actively closes the vent 9 of the valve seat 8, thereby improving the stability of the closed fit between the valve block 4 and the valve seat 8.

[0032] In a preferred embodiment, for the structure of the present invention, further optimization is arranged as follows: Figures 1 to 4As shown, a gas gathering groove 11 is provided on the side of the limit end 5 away from the valve seat 8, and the limit end 5 can move to the edge of the gas gathering groove 11 to abut against the bottom wall of the first cavity section 201 (the first cavity section opens downward, and the bottom wall is the cavity wall at the upper side of the limit end in the figure).

[0033] As shown in the figure, by setting up the gas gathering groove 11, after the deflation is completed, when the valve port structure 18 of the second air channel 6 is closed, the edge part of the gas gathering groove 11 abuts against the bottom wall of the first cavity section 201, and the gas in the gas gathering groove 11 directly provides downward pressure to the valve core. At this time, the instantaneous pressure difference between the upper and lower sides of the valve core is relatively small, which can reduce the instantaneous speed of the valve core startup. The edge of the gas gathering groove 11 is separated from the bottom wall of the first cavity section 201. At this time, the pressure difference between the upper and lower sides of the valve core is relatively large, which further pushes the valve core block to move toward the valve seat 8 at a faster speed (in the illustrated embodiment, in the working condition where a spring is provided on the lower side of the limit end 5, after the edge of the gas gathering groove 11 is separated from the bottom wall of the first cavity section 201, as the resistance of the compression spring of the limit end 5 increases, the spring resistance can overcome the increased pressure on the upper side of part of the valve core, thereby making the pressure difference between the upper and lower sides of the valve core change less, which can reduce the degree of acceleration of the valve core).

[0034] By making such an improvement, the present invention can prevent the problem of difficulty in gas entry caused by the close contact between the limit end 5 and the bottom wall of the first chamber section 201, and can also enable the valve core to be driven and started in sections when starting to move, further reducing the starting speed of the valve core, and further reducing the impact of the valve block 4 on the valve seat 8.

[0035] In the illustrated embodiment, a further optimized setting for the structure of the present invention is that a first elastic member 12 is provided between the valve core and the valve body, and the first elastic member 12 provides a force for the valve core to move away from the valve seat 8. As shown in the figure, during the deflation operation, the elastic force of the first elastic member 12 can be used to gradually move the valve core to the uppermost limit position of the valve core chamber 2, so that a relatively large gap can be formed between the valve block 4 and the valve seat 8 during the re-stabilization deflation stage, thereby improving the deflation efficiency. Moreover, after the deflation is completed, when the valve core moves downward so that the valve block 4 abuts against the valve seat 8, the first elastic member 12 can play an elastic buffering role on the valve core, so as to further reduce the impact between the valve block 4 and the valve seat 8.

[0036] In a preferred embodiment, for the structure of the present invention, a further optimized setting is that the vent hole 9 includes a first hole segment 901 connected to the second cavity segment 202, and a second hole segment 902 connected to the first hole segment 901 and the first airway 3, and the cross-section of the second hole segment 902 is larger than the cross-section of the first hole segment 901.

[0037] In the illustrated embodiment, a further optimized configuration for the structure of the present invention is that the second elastic member 10 includes a spring disposed in the second hole section 902 .

[0038] In the illustrated embodiment, a further optimized setting for the structure of the present invention is that an air guide gap 13 is provided between the inner wall of a section of the second cavity section 202 facing the valve seat cavity 1 and the valve block 4 , and the third air channel 7 is connected to the air guide gap 13 .

[0039] As shown in the figure, the diameter of the second cavity section 202 at the position of the air guiding gap 13 is enlarged to form the air guiding gap 13 between the valve blocks 4 , and the third air channel 7 is provided with an opening on the side wall of the valve block 4 to communicate with the air guiding gap 13 .

[0040] In the illustrated embodiment, regarding the communication arrangement of the second air passage 6 , as shown in the figure, the side wall at the lower end of the air guide gap 13 is connected to the third air passage 7 .

[0041] In the illustrated embodiment, a further optimized arrangement for the structure of the present invention is that the valve block 4 includes a valve block body 401 connected to the limit end 5, and a core block body 402 installed on a section of the valve block body 401 toward the valve seat 8, and the core block body 402 can close the vent hole 9 of the valve seat 8.

[0042] As shown in the figure, a mounting hole is provided at one end of the valve block body 401 facing the valve seat cavity 1, and the core block body 402 is embedded in the mounting hole, so that a core block body 402 with a certain elasticity (such as polyurethane) can be used, so that the valve block body 401 and the core block body 402 can be differentiated, and the stability of the valve core closing the valve seat 8 can be further improved.

[0043] In the illustrated embodiment, a further optimized arrangement for the structure of the present invention is that the valve body comprises: a lower shell 14, the lower shell 14 having the first air channel 3 and the valve seat cavity 1; an upper shell 15 assembly, comprising an upper shell 15 and a shell cover 16, the upper shell 15 being connected to a side of the lower shell 14 located at the valve seat cavity 1, the upper shell 15 being provided with the second cavity section 202, and the shell cover 16 being buckled on a side of the upper shell 15 away from the valve seat cavity 1, and the shell cover 16 and the upper shell 15 enclose the first cavity section 201.

[0044] As shown in the figure, when assembling, the valve seat 8 can be installed in the valve seat cavity 1 first, and then the upper shell 15 is connected to the lower shell 14, and the valve core is installed on the inner side of the upper shell 15, and then the shell cover 16 is installed on the outer side of the upper shell 15, so that the assembly of the entire valve body can be completed. Specifically, the lower end thread of the upper shell 15 is screwed on the inner side of the lower shell 14, and the side wall thread of the shell cover 16 is screwed on the outer side of the lower shell 14, and sealing rings are respectively provided between the upper shell 15 and the lower shell 14, and between the upper shell 15 and the shell cover 16.

[0045] In the illustrated embodiment, a further optimized arrangement for the structure of the present invention is that the upper shell 15 includes an outer ring portion 1501 and an inner ring portion 1502 arranged on the inner side of the outer ring portion 1501, the outer ring portion 1501 and the inner ring portion 1502 are connected at the bottom, the inner side of the inner ring portion 1502 forms the second cavity section 202, an annular cavity is formed between the outer ring portion 1501 and the inner ring portion 1502, and the outer ring portion 1501 is provided with a balancing air hole 17 connecting the annular cavity and the outside.

[0046] As shown in the figure, by providing the inner ring portion 1502 and the outer ring portion 1501, a gas buffer cavity can be formed in the ring cavity, so that when the valve core moves downward after the deflation is completed so that the valve block 4 contacts the seat body to close the vent hole 9, the gas in the ring cavity is compressed by the limit end 5 and discharged from the balance air hole 17, so that the gas in the ring cavity can buffer the movement of the limit end 5, so as to further reduce the impact of the valve block 4 on the valve seat 8. By using the gas in the ring cavity to buffer the limit end 5, after the valve core moves downward to contact the valve seat 8, the gas pressure in the ring cavity can be consistent with the external air pressure, and the gas in the ring cavity has a small upward support force on the limit end 5, which is conducive to keeping the valve block 4 in a state of abutting the valve seat 8 downward.

[0047] In the illustrated embodiment, the side edge of the shell cover 16 surrounds the outer side of the outer ring portion 1501 , and the shell cover 16 is provided with an air guide hole communicating with the balancing air hole 17 at a position corresponding to the balancing air hole 17 .

[0048] In the illustrated embodiment, with regard to the structure of the first elastic member 12, to be more specific, as shown in the figure, a spring is provided in the annular cavity, and the spring supports the limit end 5. As shown in the figure, the annular cavity provides an installation space for the first elastic member 12, so that when the valve core moves downward after the deflation is completed, the annular cavity position can be buffered not only by the compressed air outwardly through the balancing air hole 17, but also by the spring of the first elastic member 12.

[0049] It should be noted that the improvement of the present invention lies in the improvement of the position of the valve core and the valve seat 8 during the inflation and deflation process. There is no restriction on the improvement of the valve port structure 18 of the second air duct 6. Those skilled in the art can flexibly select the valve port structure 18 during the specific implementation. As a preferred embodiment, in the embodiment shown in the figure, a block valve core can be set at the position of the valve port structure 18; or, other forms of valve port structures 18 can also be used, such as the air core structure of an existing tire.

[0050] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0051] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A gas valve for hydrogen storage, characterized in that: include: The valve body is provided with a valve core cavity, a valve seat cavity connected to the valve core cavity, and a first air passage connected to the valve seat cavity at a side away from the valve core cavity, the valve core cavity includes a first cavity section, and a second cavity section connected to the first cavity section toward the valve seat cavity, the cross section of the first cavity section is larger than the cross section of the second cavity section, and the valve body is provided with a second air passage connected to the outside at one end of the second cavity section toward the valve seat cavity; A valve core, the valve core is arranged in the valve core cavity, the valve core comprises a valve block, a limiting end connected to the valve block on a side away from the valve seat cavity, the valve block is sealed with the second cavity section, the limiting end is sealed with the first cavity section, the valve core is provided with a third air passage, one end of the third air passage is communicated with the second air passage, and the other end is communicated with a side of the limiting end away from the valve seat, and the valve core can move in the valve core cavity close to or away from the valve seat; A valve seat, the valve seat is in sealing cooperation with the valve seat cavity, the valve seat is provided with an air vent connecting the first air passage and the second cavity section, and the valve seat can move closer to or away from the valve core in the valve seat cavity, a second elastic member is provided between the valve seat and the valve body, and the second elastic member provides a force for the valve seat to move toward the valve core; When the valve seat moves toward the valve core to a set position, the valve block can abut against the valve seat to close the vent hole.

2. A gas valve for hydrogen storage according to claim 1, characterized in that: A gas gathering groove is provided on the side of the limiting end away from the valve seat, and the limiting end can move to the edge of the gas gathering groove to abut against the bottom wall of the first cavity section.

3. A hydrogen storage gas valve according to claim 1, characterized in that: A first elastic member is provided between the valve core and the valve body, and the first elastic member provides a force for the valve core to move away from the valve seat.

4. A gas valve for hydrogen storage according to claim 1, characterized in that: The vent hole includes a first hole segment connected to the second cavity segment and a second hole segment connected to the first hole segment and the first air channel, and a cross section of the second hole segment is larger than a cross section of the first hole segment.

5. A gas valve for hydrogen storage according to claim 4, characterized in that: The second elastic member includes a spring disposed in the second hole segment.

6. A gas valve for hydrogen storage according to claim 1, characterized in that: An air guiding gap is provided between the inner wall of a section of the second cavity section facing the valve seat cavity and the valve block, and the third air channel is connected to the air guiding gap.

7. A gas valve for hydrogen storage according to claim 1, characterized in that: The valve block comprises a valve block body communicated with the limiting end, and a core block body installed at a section of the valve block body facing the valve seat, wherein the core block body can close the vent hole of the valve seat.

8. A hydrogen storage gas valve according to claim 1, characterized in that: The valve body comprises: A lower shell, wherein the lower shell has the first air passage and the valve seat cavity; The upper shell assembly includes an upper shell and a shell cover, wherein the upper shell is connected to the lower shell on one side of the valve seat cavity, the upper shell is provided with the second cavity section, and the shell cover is buckled on the side of the upper shell away from the valve seat cavity, and the shell cover and the upper shell enclose the first cavity section.

9. A gas valve for hydrogen storage according to claim 8, characterized in that: The upper shell includes an outer ring portion and an inner ring portion arranged inside the outer ring portion, the outer ring portion and the bottom of the inner ring portion are connected, the inner side of the inner ring portion forms the second cavity section, an annular cavity is formed between the outer ring portion and the inner ring portion, and the outer ring portion is provided with a balancing air hole connecting the annular cavity and the outside.

10. A gas valve for hydrogen storage according to claim 9, characterized in that: A spring is arranged in the annular cavity, and the spring supports the limiting end.

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