Hydrogen safety valve

Abstract

The invention discloses a hydrogen safety valve which comprises a valve element, an upper valve body, a lower valve body, a gas inlet and a gas outlet loop. The upper valve body and the lower valve body are connected through a detachable structure to form a valve body; a spool-shaped air cavity is formed in the valve body; the two valve elements are connected through an elastic piece and symmetrically arranged at the two ends of the air cavity. The upper valve body and the lower valve body are each provided with an air outlet annular channel. The circular truncated cone curved surface of the valve element abuts against the upper valve body and the lower valve body and is used for blocking the air outlet annular channel. And the air inlet is fixedly mounted on the lower valve body. According to the hydrogen safety valve, when the pressure of a pressure container is too large, double-channel rapid release of hydrogen can be achieved; if the situation that the valve element on one side cannot be normally opened occurs, the valve element on the other side can be used as a substitute, the safe pressure relief process is achieved, it is guaranteed that hydrogen in an overpressure container is safely and rapidly discharged, the operation safety of hydrogen equipment is improved, and stable operation of the hydrogen equipment is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of safety valve technology, and specifically relates to a hydrogen safety valve. Background Technology

[0002] Hydrogen, as a clean energy source, boasts advantages such as high abundance, high calorific value, and environmental friendliness. However, its development is still not mature enough. With increasing environmental awareness, hydrogen energy is becoming a key focus for the energy industry. As hydrogen is a flammable and explosive gas, safety valves must be capable of safely and rapidly depressurizing hydrogen storage containers. Existing hydrogen safety valves also pose certain safety hazards during use. While various types of hydrogen safety valves are currently available, they still fall short in terms of rapid depressurization. Therefore, there is an urgent need to develop a hydrogen safety valve with high safety and fast depressurization speed. Summary of the Invention

[0003] To address the above problems, this invention discloses a hydrogen safety valve, comprising: a valve core, an upper valve body, a lower valve body, an inlet, and an outlet ring channel;

[0004] The upper valve body and the lower valve body are connected by a detachable structure to form a valve body;

[0005] The valve body has a spool-shaped air chamber inside;

[0006] The two valve cores are connected by an elastic element and are symmetrically arranged at both ends of the air chamber;

[0007] Both the upper valve body and the lower valve body are provided with air outlet ring channels;

[0008] The frustum-shaped surface of the valve core abuts against the upper and lower valve bodies to block the air outlet passage.

[0009] The air inlet is fixedly installed on the lower valve body.

[0010] Furthermore, a semi-circular protrusion is provided on the first surface of the upper valve body;

[0011] A semi-circular groove is provided on the second surface of the lower valve body;

[0012] The protrusion of the upper valve body is installed in the groove of the lower valve body.

[0013] Furthermore, it also includes: vents;

[0014] Both sides of the internal cavity of the upper valve body and the lower valve body are provided with semi-circular through grooves.

[0015] The semi-circular through groove of the upper valve body and the semi-circular through groove of the lower valve body form a vent.

[0016] The central axis of the vent coincides with the central axis of the valve body.

[0017] Furthermore, it also includes: mesh screens;

[0018] The screen is located at one end of the vent and is installed on the outer wall of the valve body.

[0019] Furthermore, it also includes: limiting steps;

[0020] The limiting step is annular and is located at both ends of the air cavity.

[0021] Furthermore, it also includes: sealing gaskets;

[0022] The sealing gasket is annular, and an annular groove is provided on its outer wall surface;

[0023] The annular groove of the sealing gasket is inserted into the limiting step.

[0024] Furthermore, it also includes: sliding guide posts;

[0025] Multiple sliding guide posts are circumferentially and evenly arranged on the inner walls of the curved surfaces of the upper and lower valve bodies;

[0026] The sliding guide post is semi-cylindrical and parallel to the central axis of the valve body;

[0027] The valve core has multiple semi-cylindrical grooves evenly arranged circumferentially on its curved surface.

[0028] The semi-cylindrical groove of the valve core is slidably connected to the sliding guide post.

[0029] Furthermore, the elastic element is a spring;

[0030] One end of the spring is fixedly connected to a valve core, and the other end is fixedly connected to another valve core.

[0031] Furthermore, it also includes: sealing gaskets;

[0032] The valve core has a curved groove on its frustum surface;

[0033] The sealing gasket is annular and is disposed within a curved groove.

[0034] Furthermore, it also includes: support columns;

[0035] The outer edge of the air outlet annular channel is provided with several support columns; the several support columns are evenly distributed along the circumference.

[0036] The cross-section of the support column is fan-shaped.

[0037] Compared with the prior art, the embodiments of the present invention have at least the following advantages: the hydrogen safety valve of the present invention can realize the rapid release of hydrogen through two channels when the pressure of the pressure vessel is too high; if one valve core fails to open normally, the other valve core can be used as a substitute to realize the safe pressure relief process, ensure the safe and rapid discharge of hydrogen from the overpressure vessel, improve the operational safety of the hydrogen equipment, and ensure the stable operation of the hydrogen equipment.

[0038] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 A perspective view of a hydrogen safety valve according to an embodiment of the present invention is shown;

[0041] Figure 2 A schematic diagram of the internal structure of a hydrogen safety valve according to an embodiment of the present invention is shown;

[0042] Figure 3 It shows along Figure 2 Sectional view of line AA in the middle;

[0043] Figure 4 It shows along Figure 2 Sectional view of the middle BB line;

[0044] Figure 5 It shows along Figure 2 A cross-sectional view of the CC line;

[0045] Figure 6 A schematic diagram of the connection between the spring and the valve core according to an embodiment of the present invention is shown.

[0046] Reference numerals: 1. Air chamber; 2. Valve core; 3. Upper valve body; 4. Lower valve body; 5. Sealing gasket; 6. Support column; 7. Air inlet; 8. Air outlet ring; 9. Sliding guide column; 10. Screen; 11. Vent; 12. Spring; 13. Sealing gasket; 14. Limiting step. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] For hydrogen, a flammable and explosive gas, a pressure relief device was designed to safely and quickly discharge hydrogen from overpressure containers. The design mainly focuses on improving and innovating existing safety valves to enhance the safety and speed of hydrogen safety valve release.

[0049] This invention consists of two main parts: a valve body and an internal seal.

[0050] Figure 1 A perspective view of a hydrogen safety valve according to an embodiment of the present invention is shown. Figure 1 As shown, the present invention proposes a hydrogen safety valve, comprising: a valve core 2, an upper valve body 3, a lower valve body 4, an inlet 7, and an outlet ring channel 8;

[0051] The upper valve body 3 and the lower valve body 4 are connected by a detachable structure to form a complete valve body; for example, the upper valve body 3 and the lower valve body 4 can be connected by bolts or snap-fit ​​connections.

[0052] Figure 2 A schematic diagram of the internal structure of a hydrogen safety valve according to an embodiment of the present invention is shown. Figure 2 As shown, the valve body has a spool-shaped air chamber 1 inside; wherein, the air chamber 1 is composed of a cylindrical chamber, a frustum chamber, a thin shaft chamber, a frustum chamber and a cylindrical chamber from left to right;

[0053] Figure 3 It shows along Figure 2 A cross-sectional view along line AA. (e.g.) Figure 3 As shown, two valve cores 2 are connected by an elastic element and are symmetrically arranged at both ends of the air chamber 1; one valve core 2 is arranged in the cylindrical cavity and frustum cavity on the left side of the air chamber 1, and the frustum surface of the valve core 2 abuts against the frustum cavity of the air chamber 1; the elastic element is arranged in the thin shaft cavity; the other valve core 2 is arranged in the frustum cavity and cylindrical cavity on the right side of the air chamber 1, and the frustum surface of the valve core 2 abuts against the frustum cavity of the air chamber 1.

[0054] Both the upper valve body 3 and the lower valve body 4 are provided with an exhaust ring channel 8; both sides of the valve body inlet 7 are provided with an exhaust ring channel 8; the upper valve body 3 is provided with two exhaust ring channels 8 on the left and right; the lower valve body 4 is provided with two exhaust ring channels 8 on the left and right, respectively located on both sides of the valve body inlet 7; the exhaust ring channel 8 on the left side of the upper valve body 3 and the exhaust ring channel 8 on the left side of the lower valve body 4 cooperate to form a ring-shaped left exhaust ring channel 8; the exhaust ring channel 8 on the right side of the upper valve body 3 and the exhaust ring channel 8 on the right side of the lower valve body 4 cooperate to form a ring-shaped right exhaust ring channel 8.

[0055] The frustum surface of the valve core 2 abuts against the upper valve body 3 and the lower valve body 4 to block the air outlet passage 8; wherein, the valve core 2 is composed of a cylinder and a frustum; the frustum surface of the left valve core 2 abuts against the inner wall of the frustum surface on the left side of the upper valve body 3 and the lower valve body 4 to block the air outlet passage 8 on the left side of the upper valve body 3 and the lower valve body 4; the frustum surface of the right valve core 2 abuts against the inner wall of the frustum surface on the right side of the upper valve body 3 and the lower valve body 4 to block the air outlet passage 8 on the right side of the upper valve body 3 and the lower valve body 4.

[0056] The air inlet 7 is fixedly mounted on the lower valve body 4. Alternatively, the air inlet 7 can be integrally formed with the lower valve body 4.

[0057] Valve core 2 is used to block the venting ring channel 8 and to open the venting ring channel 8 in time when the pressure inside the high-pressure vessel is too high;

[0058] The upper valve body 3 is used to interlock with the lower valve body 4 to form a pressure chamber, and the two are fastened together by screws.

[0059] The lower valve body 4 is used to interlock with the upper valve body 3 to form a pressure chamber. The two are tightly connected by screws, and the lower end of the lower valve body 4 is connected to the air inlet 7. The air inlet 7 can transmit pressure to the pressure chamber formed by the upper valve body 3 and the lower valve body 4.

[0060] Inlet 7 is used for gas from the overpressure container to enter the gas chamber 1 of the hydrogen safety valve.

[0061] The exhaust ring 8 is used to discharge gas, balance pressure, and prevent the valve core 2 from being blocked from continuing to move due to the compression of gas behind the valve core 2 during the depressurization process of the hydrogen safety valve.

[0062] The hydrogen safety valve of this invention can achieve rapid dual-channel venting of hydrogen when the pressure in the pressure vessel is too high. If one valve core fails to open normally, the other valve core can be used as a substitute to achieve a safe depressurization process, ensuring the safe and rapid discharge of hydrogen from the overpressure vessel, improving the operational safety of the hydrogen equipment, and ensuring the stable operation of the hydrogen equipment.

[0063] In some embodiments, a semi-circular protrusion is provided on the first surface (bottom surface) of the upper valve body 3;

[0064] A semi-circular groove is provided on the second surface (top surface) of the lower valve body 4;

[0065] The bottom surface of the upper valve body 3 abuts against the top surface of the lower valve body 4. The protrusion of the upper valve body 3 is installed in the groove of the lower valve body 4, which facilitates the accurate combination of the upper valve body 3 and the lower valve body 4. A sealing ring is fixed in the middle of the interlocking grooves. When the two valve bodies are pressed together, the sealing ring is squeezed and a sealing effect is achieved.

[0066] For example, a semi-circular protrusion is provided at each of the four corners of the bottom surface of the upper valve body 3, and a semi-cylindrical groove is provided at each of the four corners of the top surface of the lower valve body 4, which correspond one-to-one with the semi-cylindrical protrusions on the upper valve body 3.

[0067] In some embodiments, the hydrogen safety valve further includes: a vent 11;

[0068] Both sides of the internal cavity of the upper valve body 3 and the lower valve body 4 are provided with semi-circular through grooves.

[0069] When the semi-circular through groove of the upper valve body 3 and the semi-circular through groove of the lower valve body 4 are engaged, they form a vent 11; the two vents 11 are located on both sides of the valve body respectively.

[0070] The central axis of the vent 11 coincides with the central axis of the valve body.

[0071] The vent 11 is connected to the atmosphere on the outside and to the air chamber 1 on the inside. Its function is to ensure that there is no compressed air in the air chamber 1, so that the gas in the air inlet 7 can be discharged smoothly.

[0072] In some embodiments, the hydrogen safety valve further includes: a mesh screen 10;

[0073] The mesh screen 10 is set at one end of the vent 11 (outside the vent 11) and installed on the outer wall of the valve body. The inner end of the vent 11 is connected to the air chamber 1.

[0074] The screen 10 is used to prevent external dust particles from entering the air chamber 1 and hindering the movement of the valve core 1.

[0075] In some embodiments, the hydrogen safety valve further includes: a limiting step 14;

[0076] The limiting step 14 is annular and is disposed in the cylindrical cavities at both ends of the air chamber 1, with the limiting step 14 closer to the air inlet 11. The limiting step 14 has a rectangular cross-section and can be integrally molded with the valve body.

[0077] The limiting step 14 is used to prevent the valve core 2 from moving excessively and becoming unable to return to its original position.

[0078] In some embodiments, the hydrogen safety valve further includes: a sealing gasket 13;

[0079] The sealing gasket 13 is annular, and an annular groove is provided on its outer wall surface;

[0080] The annular groove of the sealing gasket 13 is inserted into the limiting step 14 and fixed with glue.

[0081] Sealing gasket 13 is used to buffer the direct impact of valve core 2 on the inner wall of the valve body.

[0082] Figure 4 It shows along Figure 2 A cross-sectional view along the BB line. (Example) Figure 4 As shown, in some embodiments, the hydrogen safety valve further includes: a sliding guide post 9;

[0083] Multiple sliding guide posts 9 are evenly arranged circumferentially on the inner curved surfaces of the upper valve body 3 and the lower valve body 4; for example, two sliding guide posts 9 are provided on the inner curved surfaces of the left and right sides (inner curved surfaces of the cylindrical cavity of the valve body) of the upper valve body 3 and the lower valve body 4; the sliding guide posts 9 can be integrally formed with the upper valve body 3 or the lower valve body 4; the length of the sliding guide post 9 extends only to the side of the sealing gasket 13 away from the vent 11, and does not penetrate the sealing gasket 13;

[0084] The sliding guide post 9 is semi-cylindrical, and the line connecting the centers of the two semicircles of the sliding guide post 9 is parallel to the central axis of the valve body;

[0085] The valve core 2 has a plurality of semi-cylindrical grooves uniformly arranged circumferentially on its cylindrical curved surface; for example, the valve core 2 has four semi-cylindrical grooves uniformly arranged circumferentially on its cylindrical curved surface.

[0086] The semi-cylindrical groove of the valve core 2 is slidably connected to the sliding guide post 9, allowing the valve core 2 to move along the sliding guide post 9. The connection point must be polished and lubricated to reduce frictional resistance. For example, the valve core 2 has four grooves evenly arranged circumferentially.

[0087] The sliding guide post 9 can constrain the direction of movement of the valve core 2, preventing it from tipping over and allowing it to move only in a straight line.

[0088] In one embodiment, two sliding guide posts 9 are provided on the inner wall of the left curved surface of the air chamber 1, that is, one sliding guide post 9 is provided on the inner wall of the left curved surface of the upper valve body 3 and one sliding guide post 9 is provided on the inner wall of the left curved surface of the lower valve body 4, and the two sliding guide posts 9 are evenly distributed in the circumferential direction.

[0089] In one embodiment, six sliding guide posts 9 are provided on the inner wall of the left curved surface of the air chamber 1, that is, three sliding guide posts 9 are provided on the inner wall of the left curved surface of the upper valve body 3 and three sliding guide posts 9 are provided on the inner wall of the left curved surface of the lower valve body 4, and the six sliding guide posts 9 are evenly distributed along the circumference.

[0090] Although the above description uses two, four, and six sliding guide posts 9 as examples, the present invention is not limited to this. It can be equipped with multiple sliding guide posts 9, such as three, five, seven, or nine. Those skilled in the art can consider the structure of the present invention and practical applications to determine the appropriate method, as long as stable movement of the valve core 2 can be achieved.

[0091] In one embodiment, the valve core 2 on the left side has two semi-cylindrical grooves evenly distributed around its cylindrical surface. The two semi-cylindrical grooves are evenly distributed around the circumference and are respectively matched with two sliding guide posts 9 on the inner wall of the left curved surface of the air chamber 1.

[0092] In one embodiment, the valve core 2 on the left side has six semi-cylindrical grooves evenly distributed around its cylindrical curved surface. These six semi-cylindrical grooves are evenly distributed around the circumference and each of them is matched with one of the six sliding guide posts 9 on the inner wall of the curved surface on the left side of the air chamber 1.

[0093] Although the above description uses two, four, or six semi-cylindrical grooves on the valve core 2 as examples, the present invention is not limited to this. It can be equipped with multiple semi-cylindrical grooves, such as three, five, seven, or nine. Those skilled in the art can consider the structure of the present invention and practical applications, as long as stable movement of the valve core 2 can be achieved.

[0094] Figure 6 A schematic diagram showing the connection between the spring and the valve core according to an embodiment of the present invention is illustrated. Figure 6 As shown, in some embodiments, the elastic element is a spring 12;

[0095] One end of the spring 12 is fixedly connected to a valve core 2, and the other end is fixedly connected to another valve core 2.

[0096] Spring 12 pulls the two valve cores 2 at both ends to ensure that the valve cores 2 block the gas outlet ring channel 8 and ensure that the high-pressure gas in the container is discharged. Then, the two valve cores 2 on both sides are moved to the initial position to re-block the gas outlet ring channels 8 on both sides.

[0097] The spring seat is located between the valve core 2 and the spring 12. The spring 12 is set inside the spring seat. The spring seat serves to fix and support the spring 12, ensuring the smooth reciprocating movement of the spring 12, preventing the spring 12 from shifting, preventing friction between the spring 12 and the upper valve body 3 or the lower valve body 4, and avoiding wear on the spring 12.

[0098] In some embodiments, the hydrogen safety valve further includes: a sealing gasket 5;

[0099] The valve core 2 has a curved groove on its frustum surface;

[0100] The sealing gasket 5 is annular and is set in a curved groove, completely fitting the valve core 2. The sealing gasket 5 is combined with the valve core 2 by an interference fit to ensure airtightness.

[0101] The annular sealing gasket 5 is pressed against the outlet annular channel 8 by the pulling force of the valve core 2 driven by the spring 12, thus sealing the outlet annular channel 8. When the pressure inside the container is lower than the set pressure, it ensures that the outlet annular channel 8 is completely sealed to prevent gas leakage from the container.

[0102] Figure 5 It shows along Figure 2 A cross-sectional view along the CC line. (Example) Figure 5 As shown, in some embodiments, the hydrogen safety valve further includes: a support column 6;

[0103] The outer edge of the air outlet ring channel 8 is provided with a plurality of support columns 6; and the plurality of support columns 6 are evenly distributed along the circumference; for example, six support columns 6 are evenly distributed along the circumference.

[0104] The cross-section of the support column 6 is fan-shaped.

[0105] Support column 6 is used to form the structural frame of venting ring channel 8, so that the overpressure vessel can successfully complete the depressurization.

[0106] In some embodiments, eight support columns 6 may be provided on the outer edge of the air outlet ring channel 8, and the support columns are evenly distributed along the circumference to ensure stable support.

[0107] In some embodiments, ten support columns 6 may be provided on the outer edge of the air outlet ring channel 8, and the support columns are evenly distributed along the circumference to ensure stable support.

[0108] Although the above description uses six, eight, and ten support columns 6 as examples, the present invention is not limited to these. It can be equipped with multiple support columns 6, such as five, seven, or nine. Those skilled in the art can consider the structure of the present invention and practical applications, as long as stable support can be achieved.

[0109] The working principle of the hydrogen safety valve of this invention is as follows:

[0110] When the pressure inside the container exceeds the sum of the tension of spring 12 and the external atmospheric pressure, valve core 2 will move outward along the sliding guide post 9 under the action of pressure difference. The sealing gasket 5 will also move horizontally along with valve core 2. At this time, the outlet ring channels 8 on both sides, which were sealed by the sealing gasket 5, are opened, and the high-pressure gas inside is rapidly discharged outward along the outlet ring channels 8. However, due to the constraint of the sliding guide post 9, the valve core 2 will not vibrate or tip over during the discharge of high-pressure gas, allowing for relatively stable discharge of high-pressure gas. When the internal pressure reaches the required pressure, both valve cores 2 on both sides move back to their original positions along the horizontally set sliding guide post 9 towards the center of the valve body, simultaneously re-closing the outlet ring channels 8 with the sealing gasket 5. When the internal pressure of the container is too high, the valve cores 2 on both sides of the aforementioned hydrogen safety valve will open simultaneously, effectively increasing the amount of gas discharged and improving the gas discharge speed. Another function of setting up dual exhaust ports is to provide a backup exhaust port when one exhaust port cannot work properly, ensuring the safe and rapid discharge of hydrogen from the overpressure container, improving the operational safety of the hydrogen equipment, and ensuring the stable operation of the hydrogen equipment.

[0111] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen safety valve, characterized in that, include: Valve core (2), upper valve body (3), lower valve body (4), air inlet (7) and air outlet ring channel (8); The upper valve body (3) and the lower valve body (4) are connected by a detachable structure to form a valve body; The valve body is provided with a spool-shaped air chamber (1); Two valve cores (2) are connected by elastic elements and are symmetrically arranged at both ends of the air chamber (1); Both the upper valve body (3) and the lower valve body (4) are provided with an air outlet ring channel (8); The frustum surface of the valve core (2) abuts against the upper valve body (3) and the lower valve body (4) to block the air outlet ring channel (8); The air inlet (7) is fixedly installed on the lower valve body (4).

2. The hydrogen safety valve according to claim 1, characterized in that, A semi-circular protrusion is provided on the first surface of the upper valve body (3); A semi-circular groove is provided on the second surface of the lower valve body (4); The protrusion of the upper valve body (3) is installed in the groove of the lower valve body (4).

3. The hydrogen safety valve according to claim 1, characterized in that, Also includes: Vent (11); The upper valve body (3) and the lower valve body (4) are provided with semi-circular through grooves on both sides of their internal cavities; The semi-circular through groove of the upper valve body (3) and the semi-circular through groove of the lower valve body (4) form a vent (11); The central axis of the vent (11) coincides with the central axis of the valve body.

4. The hydrogen safety valve according to claim 3, characterized in that, Also includes: Wire mesh (10); The screen (10) is located at one end of the vent (11) and is installed on the outer wall of the valve body.

5. The hydrogen safety valve according to claim 1, characterized in that, Also includes: Limiting step (14); The limiting step (14) is annular and is located at both ends of the air cavity (1).

6. The hydrogen safety valve according to claim 5, characterized in that, Also includes: Sealing gasket (13); The sealing gasket (13) is annular, and an annular groove is provided on the outer wall surface; The annular groove of the sealing gasket (13) is inserted into the limiting step (14).

7. The hydrogen safety valve according to claim 1, characterized in that, Also includes: Sliding guide post (9); Multiple sliding guide posts (9) are evenly arranged circumferentially on the inner walls of the curved surfaces of the upper valve body (3) and the lower valve body (4); The sliding guide post (9) is semi-cylindrical and parallel to the central axis of the valve body; The valve core (2) has multiple semi-cylindrical grooves evenly arranged on its curved surface in the circumferential direction. The semi-cylindrical groove of the valve core (2) is slidably connected to the sliding guide post (9).

8. The hydrogen safety valve according to claim 1, characterized in that, The elastic element is a spring (12); One end of the spring (12) is fixedly connected to a valve core (2), and the other end is fixedly connected to another valve core (2).

9. The hydrogen safety valve according to claim 1, characterized in that, Also includes: Sealing gasket (5); The valve core (2) has a curved groove on its frustum surface; The sealing gasket (5) is annular and is set in a curved groove.

10. The hydrogen safety valve according to claim 1, characterized in that, Also includes: Support column (6); The outer edge of the air outlet ring channel (8) is provided with several support columns (6); the several support columns (6) are evenly distributed along the circumference; The cross-section of the support column (6) is fan-shaped.

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