Combination valve for hydrogen storage and hydrogen storage system

Abstract

The embodiment of the utility model relates to the technical field of hydrogen energy utilization, and discloses a combination valve for hydrogen storage and a hydrogen storage system. The hydrogen storage combination valve comprises a main body, a first ventilation path, a second ventilation path, a third ventilation path and a one-way valve are arranged in the main body, one ends of the first ventilation path and the second ventilation path penetrate through the main body, the other ends of the first ventilation path and the second ventilation path are connected with the one-way valve, and the two ends of the third ventilation path communicate with the one-way valve and the first ventilation path correspondingly; when the one-way valve element is located at the inflation position, the first ventilation channel communicates with the second ventilation channel through the fourth ventilation channel. When the one-way valve element is located at the air outlet position, the second ventilation channel communicates with the first ventilation channel through the third ventilation channel. The embodiment of the utility model further provides a hydrogen storage system. The hydrogen storage system comprises the combination valve. According to the combination valve for hydrogen storage and the hydrogen storage system, the structural layout with high composite utilization performance is achieved, the probability of mistaken touch opening is reduced, and the input cost is reduced.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of hydrogen energy utilization, and particularly to a combined valve for hydrogen storage and a hydrogen storage system. Background Art

[0002] Due to the extensive use of energy sources such as fossil fuels, it has a serious impact on the environment on which humans depend for survival. Therefore, new energy is constantly coming into people's view. In the process of using new energy such as solar energy and wind energy, both the cleanliness of the energy source is achieved and the channels of energy supply are enriched. Among them, hydrogen energy is being vigorously developed due to its pollution-free characteristics during use.

[0003] During the reuse of hydrogen energy, a hydrogen storage system is required to store hydrogen. Among them, in a hydrogen supply system that uses hydrogen as fuel, hydrogen is usually stored in gas cylinders, and the gas cylinders are usually made of metals with high strength. Before hydrogen is stored in the gas cylinder, it will be compressed to a high-pressure state, which is also called high-pressure hydrogen storage.

[0004] As an important part in the hydrogen storage system, the valve not only plays a role in connecting the air passage or other equipment, but also plays a role in maintaining the operation safety of the overall system. Currently, in the hydrogen storage system, to meet the control requirements during the operation of the hydrogen flow surge, multiple valves with different functions need to be configured, which easily causes the system flow channels to be intricate, occupying a large amount of usage space. At the same time, most of the valves need to be manually adjusted, and the risk of accidental manual opening is extremely high, resulting in system failures or paralysis. Summary of the Utility Model

[0005] In the current hydrogen storage system, the number of valves is large and the types are miscellaneous, resulting in complex system flow channels, low space utilization rate, increasing the probability of accidental manual opening and the failure rate of the system.

[0006] To solve the above problems, the embodiments of the present application provide a combined valve for hydrogen storage, which includes:

[0007] A main body, in which a first ventilation path, a second ventilation path, a third ventilation path and a check valve are arranged; both the first ventilation path and the second ventilation path penetrate the main body at one end and are connected to the check valve at the other end, one end of the third ventilation path is connected to the check valve, and the other end is connected to the first ventilation path; the check valve includes a check valve core, and the check valve core has an inflation position and an air outlet position; when the check valve core is located at the inflation position, a fourth ventilation path is formed in the check valve, and the first ventilation path and the second ventilation path are connected through the fourth ventilation path; when the check valve core is located at the air outlet position, the second ventilation path is connected to the first ventilation path through the third ventilation path.

[0008] The embodiments of the present application also provide a combined valve for hydrogen storage and a hydrogen storage system, and the hydrogen storage system includes the above-mentioned combined valve for hydrogen storage.

[0009] The purpose of the embodiment of the present application is to provide a combined valve for hydrogen storage, which has a structural layout with high composite utilization, simplifies the system flow path, improves the space utilization rate, has a high utilization rate of the overlapping functions of components, reduces manual participation, reduces the probability of accidental opening, improves the stability of the system, and reduces the input cost.

[0010] In some embodiments, the one-way valve further includes a valve core sleeve, and the one-way valve core is arranged inside the valve core sleeve; when the pressure in the first ventilation path is greater than the pressure in the second ventilation path, the one-way valve core is located at the inflation position, and the gap between the one-way valve core and the valve core sleeve forms a fourth ventilation path; when the pressure in the second ventilation path is greater than the pressure in the first ventilation path, the one-way valve core is located at the deflation position.

[0011] In some embodiments, a quick-connect valve is arranged on the first ventilation path. The quick-connect valve includes a quick-connect joint and a quick-connect valve core. The quick-connect valve core is arranged inside the quick-connect joint. One end of the quick-connect joint is connected to the valve core sleeve, and the other end is arranged at the port of one end of the first ventilation path penetrating through the main body.

[0012] In some embodiments, one end of the third ventilation path is connected to the valve core sleeve, and the other end is connected to the quick-connect joint.

[0013] In some embodiments, a filter is arranged on the second ventilation path, and the filter is arranged at the port of one end of the second ventilation path penetrating through the main body.

[0014] In some embodiments, a pressure reducing valve is arranged on the third ventilation path. A pressure reducing valve core is arranged inside the pressure reducing valve, and the pressure reducing valve core has a communicating position and a blocking position.

[0015] In some embodiments, when the one-way valve core is located at the inflation position, the pressure reducing valve core is located at the blocking position to block the third ventilation path; when the one-way valve core is located at the deflation position, the pressure reducing valve core is located at the communicating position to open the third ventilation path.

[0016] In some embodiments, a pressure relief path is further included inside the main body. One end of the pressure relief path penetrates through the main body, and the other end is connected to the one-way valve.

[0017] In some embodiments, a sliding valve core is arranged at the end of the pressure relief path connected to the one-way valve, a limiting member is arranged at the end of the pressure relief path penetrating through the main body, and a heat-sensitive glass ball is arranged between the sliding valve core and the limiting member. The heat-sensitive glass ball is used to limit the position of the sliding valve core. Description of the Drawings

[0018] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated. The figures in the drawings do not constitute a scale limitation.

[0019] Figure 1 is a cross-sectional view of the intake process structure of the combined valve for hydrogen storage provided by some embodiments of the present application;

[0020] Figure 2 is a partial cross-sectional view of the intake process structure of the combined valve for hydrogen storage provided by some embodiments of the present application;

[0021] Figure 3 is a cross-sectional view of the gas release process structure of the combined valve for hydrogen storage provided by some embodiments of the present application;

[0022] Figure 4 is a cross-sectional view of the pressure relief process structure of the combined valve for hydrogen storage provided by some embodiments of the present application;

[0023] Figure 5 is a schematic diagram of the hydrogen storage system provided by some embodiments of the present application.

[0024] Explanation of reference numerals in the drawings: 11, main body; 111, first ventilation path; 112, second ventilation path; 113, third ventilation path; 114, fourth ventilation path; 12, check valve; 121, check valve core; 122, valve core sleeve; 123, first spring; 13, quick-connect valve; 131, quick-connect joint; 132, quick-connect valve core; 133, second spring; 14, filter; 15, pressure reducing valve; 151, pressure reducing valve core; 152, third spring; 153, spring pressure tube; 154, pressure chamber; 155, transmission part; 156, fourth spring; 157, fixing part; 158, ventilation chamber; 159, valve seat; 1510, outer shell; 16, pressure relief path; 161, sliding valve core; 162, heat-sensitive glass bulb; 163, limiting part. Detailed implementation manners

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will elaborate on each implementation manner of the present application in conjunction with the drawings. However, those of ordinary skill in the art can understand that in each implementation manner of the present application, many technical details are presented for the convenience of readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following implementation manners, the technical solutions claimed in the present application can still be achieved. The division of the following embodiments is for convenience of description and should not constitute any limitation on the specific implementation manner of the present application. The various embodiments can be combined and cross-referenced with each other on the premise of no contradiction.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion.

[0027] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, "a plurality" means more than two unless otherwise specifically defined.

[0028] In the description of the embodiments of this application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of this application can be understood according to specific circumstances.

[0029] Referring to Figures 1 to 5 , the embodiments of this application provide the following technical solutions:

[0030] As Figure 1 shown, a cavity is provided inside the main body 11. Channels penetrating the main body 11 are provided in the cavity in the four directions of up, down, left, and right. The one-way valve 12 is fixedly connected in the cavity inside the main body 11, and the one-way valve 12 can communicate with the channels in the four directions;

[0031] The one-way valve 12 includes a one-way valve core 121 and a valve core sleeve 122. The one-way valve core 121 is slidably connected inside the valve core sleeve 122. When the one-way valve core 121 is located at the left end inside the valve core sleeve 122, the one-way valve core 121 is in the air release position; when the one-way valve core 121 is located at the right end inside the valve core sleeve 122, the one-way valve core 121 is in the inflation position. The gap between the one-way valve core 121 and the valve core sleeve 122 forms a fourth ventilation path 114. The right end of the one-way valve core 121 is fixedly connected to one end of a first spring 123. The valve core sleeve 122 is fixedly connected in the cavity inside the main body 11, and the fixed connection between the valve core sleeve 122 and the main body 11 is sealed. The left and right ends of the valve core sleeve 122 are respectively communicated with the left and right side channels inside the main body 11, and two corresponding ventilation holes are provided on the upper and lower sides of the valve core sleeve, and the upper and lower ventilation holes are respectively communicated with the upper and lower side channels inside the main body 11.

[0032] A quick-insert valve 13 is provided in the left channel within the main body 11. The quick-insert joint 131 is fixedly connected within the left channel of the main body 11, and the external connection port of the quick-insert joint 131 extends out from the left end of the left channel where it is located. The fixed connection between the quick-insert joint 131 and the main body 11 is sealed. The quick-insert valve core 132 is slidably connected within the quick-insert joint 131. One end of the second spring 133 is fixedly connected to the quick-insert valve core 132, and the other end abuts against the left end of the valve core sleeve 122. The right end of the quick-insert joint 131 is provided with a ventilation hole, and the right end of the quick-insert valve core 132 is provided with a ventilation hole. When the quick-insert joint 131 moves to the right end within the quick-insert joint 131, a first ventilation path 111 is formed by the gap between the quick-insert valve core 132 and the quick-insert joint 131. When the quick-insert valve core 132 moves to the left end within the quick-insert joint 131, the quick-insert valve core 132 blocks the quick-insert joint 131, blocking the first ventilation path 111.

[0033] As Figure 2 shown, a pressure reducing valve 15 is fixedly connected at the port of the upper channel within the main body 11. The valve seat 159 is fixedly connected at the port of the upper channel within the main body 11, and a through hole is provided on the valve seat 159. The through hole of the valve seat 159 communicates with the upper channel within the main body 11. The fixing member 157 is fixedly connected to the upper end of the valve seat 159. Ventilation holes are provided on the left and right sides of the connection between the fixing member 157 and the valve seat 159. The joint between the fixing member 157 and the main body 11 is sealed. An air cavity 158 is formed among the fixing member 157, the valve seat 159, and the main body 11. A vertically through sliding channel is provided in the middle of the fixing member 157. The transmission member 155 is slidably connected within the sliding channel of the fixing member 157. The transmission member 155 fits with the upper half of the sliding channel of the fixing member 157 and is sealed, and there is a gap in the lower half. A through channel is provided within the transmission member 155. The through channel within the transmission member 155 communicates with the gap between the transmission member 155 and the fixing member 157 through a ventilation hole. A pressure reducing valve core 151 is provided at the lower end within the through channel of the transmission member 155, and a spring pressing tube 153 is fixedly connected at the upper end. The upper and lower ends of the third spring 152 are respectively fixedly connected to the pressure reducing valve core 151 and the spring pressing tube 153. The lower end of the pressure reducing valve core 151 extends out of the transmission member 155 and corresponds to the upper port of the through hole of the valve seat 159. The upper and lower ends of the fourth spring 156 are respectively fixedly connected to the transmission member 155 and the fixing member 157. An outer shell 1510 is provided outside the fixing member 157. The outer shell 1510 is fixedly connected to the main body 11. The joint between the outer shell 1510 and the fixing member 157 is sealed. The gap among the spring pressing tube 153, the transmission member 155, the fixing member 157, and the outer shell 1510 forms a pressure chamber 154;

[0034] The first ventilation path 111 is communicated with the ventilation cavity 158 through the ventilation hole at the right end of the quick-connect joint 131 and the ventilation hole on the main body 11 in sequence; the ventilation cavity 158 is communicated with the pressure chamber 154 through the ventilation hole on the fixing member 157, the gap between the transmission member 155 and the fixing member 157, the ventilation hole on the transmission member 155, the through-channel in the transmission member 155, the spring pressure tube 153 in sequence; the third ventilation path 113 is composed of the through-hole of the valve seat 159, the ventilation hole on the fixing member 157 and the ventilation cavity 158 in sequence.

[0035] When the pressure reducing valve core 151 is in close contact with the upper port of the through-hole of the valve seat 159, the pressure reducing valve core 151 is in the blocking position and the third ventilation path 113 is in the blocked state; when the pressure reducing valve core 151 is above the upper port of the through-hole of the valve seat 159, the pressure reducing valve core 151 is in the communicating position and the third ventilation path 113 is in the communicating state.

[0036] A pressure relief path 16 is provided in the right-side channel in the main body 11. The limiting member 163 is arranged at the outer port of the right-side channel in the main body 11 and is fixedly connected to the main body 11. The sliding valve core 161 is arranged at the inner end of the right-side channel in the main body 11, and the left end of the sliding valve core 161 abuts against the right end of the valve core sleeve 122. The left end of the sliding valve core 161 is in contact with the other end of the first spring 123. The joint between the sliding valve core 161 and the main body 11 is sealed. The temperature-sensitive glass ball 162 is arranged in the limiting member 163, and both ends of the temperature-sensitive glass ball 162 are in contact with the right end of the sliding valve core 161 and the limiting member 163 respectively. The temperature-sensitive glass ball 162 limits and fixes the position of the sliding valve core 161. The right end of the sliding valve core 161 is provided with a ventilation hole, and the right end of the limiting member 163 is provided with a ventilation hole. When the temperature-sensitive glass ball 162 remains in existence, the sliding valve core 161 is in the blocking position to block the pressure relief path 16.

[0037] The lower-side channel in the main body 11 is set as the second ventilation path 112. The upper end of the second ventilation path 112 is communicated with the valve core sleeve 122. The lower end of the second ventilation path 122 penetrates through the main body 11. A filter 14 is arranged at the lower end of the second ventilation path 122. The filter 14 is fixedly connected to the main body 11 and is sealed.

[0038] It should be noted that: the combined valve for hydrogen storage includes an inflation mode, a deflation mode, and a pressure relief mode during specific use. When the combined valve for hydrogen storage is in the inflation mode, as Figure 1 and 2 shown, the filter 14 is connected to the hydrogen cylinder to be inflated, the quick-connect joint 131 is connected to the external gas source mechanism. The quick-connect valve core 132 is a thimble-type quick-connect structure. Under the action of an external mechanism, the quick-connect valve core 132 is pushed to the right end in the quick-connect joint 131 to make the first ventilation path 111 in a ventilation state.

[0039] High-pressure hydrogen enters the first ventilation path 111 from the quick-connect fitting 131, and then divides into two parts of airflows. One part of the airflow passes through the ventilation hole at the right end of the quick-connect valve core 132, and at the same time pushes the one-way valve core 121 to the ventilation position, so that the high-pressure hydrogen enters the fourth ventilation path 114 from the first ventilation path 111. The high-pressure hydrogen entering the fourth ventilation path 114 enters the second ventilation path 112 through the ventilation hole on the lower side of the valve core sleeve 122, then enters the filter 14 through the second ventilation path 112, and finally enters the hydrogen cylinder through the filter 14;

[0040] The other part of the airflow enters the ventilation cavity 158 through the ventilation hole at the right end of the quick-connect fitting, and then sequentially passes through the ventilation hole on the fixing member 157, the gap between the transmission member 155 and the fixing member 157, the ventilation hole on the transmission member 155, the through-channel inside the transmission member 155, and the spring pressure tube 153 to communicate with the pressure cavity 154;

[0041] As the air pressure in the pressure cavity 154 continuously increases, the transmission member 155 moves downward along the slideway of the fixing member 157 under the action of the air pressure. At the same time, the pressure-reducing valve core 151 moves downward under the drive of the transmission member 155, so that the pressure-reducing valve core 151 moves to the blocking position, and the upper port of the through-hole of the pressure-reducing valve core 151 and the valve seat 159 are closely fitted. When the combined valve is inflated, the high-pressure hydrogen entering the fourth ventilation path 114 can only flow into the second ventilation path 113.

[0042] It should be noted that when the combined valve for hydrogen storage is in the deflation mode, as Figure 3 shown, the filter 14 is connected to the hydrogen cylinder as the gas source, the quick-connect fitting 131 is connected to the external hydrogen-consuming mechanism, and the quick-connect valve core 132 is a thimble-type quick-connect structure. Under the action of the external hydrogen-consuming mechanism, the quick-connect valve core 132 is pushed to the right end inside the quick-connect fitting 131, so that the first ventilation path 111 is in the ventilation state;

[0043] The high-pressure hydrogen in the hydrogen cylinder as the gas source enters the second ventilation path 112 through the filter 14. Then the high-pressure hydrogen enters the valve core sleeve 122. The one-way valve core 121 is located at the left end inside the valve core sleeve 122 under the action of the first spring 123. At this time, the one-way valve core 121 is in the deflation position, and the valve core sleeve 122 is equivalent to a passage. The high-pressure hydrogen passes through the valve core sleeve 122 and enters the through-hole of the valve seat 159;

[0044] At this time, there is no air pressure in the pressure chamber 154. The upper end of the transmission part 155 is in close contact with the top inside the outer shell 1510 under the action of the fourth spring 156. The pressure relief valve core 151 is in the connected position, and the third ventilation path 113 is in the connected state. The high-pressure hydrogen entering the through hole of the valve seat 159 then passes through the ventilation holes on the fixing part 157 and the ventilation chamber 158 in sequence and enters the first ventilation path 111. The high-pressure hydrogen entering the first ventilation path 111 then enters the external hydrogen-requiring mechanism through the quick-connect joint 131.

[0045] It should be noted that when the combined valve for hydrogen storage is in the deflation mode, as Figure 3 shown, the pressure relief valve core 151 is a non-fixed unloading type valve core, which reduces the pressure of the high-pressure hydrogen discharged from the through hole of the valve seat 159. The third spring 152 improves the pressure relief effect of the pressure relief valve core 151.

[0046] It should be noted that the combined valve for hydrogen storage is also provided with an activation process, and the activation process is composed of the combined valve repeatedly performing the inflation process and the deflation process.

[0047] It should be noted that when the combined valve for hydrogen storage is in the pressure relief mode, as Figure 4 shown, the temperature-sensitive glass ball 162 is broken under the action of high temperature. At this time, the sliding valve core 161 loses the limit fixation of the temperature-sensitive glass ball 162. The sliding valve core 161 moves to the right end inside the limiting part 163 under the action of high-pressure hydrogen and the first spring 123. The sliding valve core 161 disengages from the blocking position. At this time, the pressure relief path 16 is in the connected state;

[0048] At this time, the hydrogen existing in the combined valve and the hydrogen in the hydrogen cylinder connected to the filter 14 both enter the pressure relief path 16, and are discharged into the air through the ventilation holes of the sliding valve core 161 and the ventilation holes of the limiting part 163 in sequence.

[0049] It should be noted that the sealing treatment includes but is not limited to using a sealing rubber ring for sealing.

[0050] It should be noted that the sliding valve core 161, the temperature-sensitive glass ball 162 and the limiting part 163 form a TPRD temperature-driven pressure relief device for ensuring safety when the hydrogen cylinder encounters high temperature such as a fire. The breaking temperature of the temperature-sensitive glass ball 162 is 110 degrees.

[0051] As Figure 5 shown, some embodiments of the present application also provide a hydrogen storage system, and the hydrogen storage system includes the above-mentioned combined valve for hydrogen storage.

[0052] It should be noted that when the system is inflated, the quick-connect joint 131 is connected to the hydrogen addition port of the external gas source mechanism, and the filter 14 is connected to the hydrogen cylinder to be inflated;

[0053] When the system is deflated, the quick-connect fitting 131 is connected to the hydrogen supply port of the external hydrogen-requiring mechanism, and the filter 14 is connected to the hydrogen cylinder serving as the gas source.

[0054] Through a highly composite utilization structure layout, the combined valve for hydrogen storage simplifies the system flow path, improves the space utilization rate, has a high utilization rate of overlapping functions of components, reduces manual participation, lowers the probability of accidental opening, improves the stability of the system, and reduces the input cost.

[0055] Those of ordinary skill in the art can understand that the above-described embodiments are specific examples for implementing the present application, and in actual applications, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A combination valve for metal hydrogen storage, comprising a main body, characterized in that: The main body is provided with a first air passage, a second air passage, a third air passage and a one-way valve; one end of the first air passage and the second air passage passes through the main body, and the other end is connected to the one-way valve; one end of the third air passage is connected to the one-way valve, and the other end is connected to the first air passage; The one-way valve comprises a one-way valve core, and the one-way valve core has an inflating position and an exhaust position; When the one-way valve core is located at the inflation position, a fourth air passage is formed in the one-way valve, and the first air passage and the second air passage are connected through the fourth air passage; When the one-way valve core is located at the air outlet position, the second air passage is communicated with the first air passage through the third air passage.

2. A metal hydrogen storage combination valve according to claim 1, characterized in that: The one-way valve further comprises a valve core sleeve, and the one-way valve core is arranged in the valve core sleeve; When the pressure in the first air passage is greater than the pressure in the second air passage, the one-way valve core is located at the inflation position, and the gap between the one-way valve core and the valve core sleeve forms the fourth air passage; When the pressure in the second air passage is greater than the pressure in the first air passage, the one-way valve core is located at the deflation position.

3. A metal hydrogen storage combined valve according to claim 2, characterized in that: A quick-insert valve is arranged on the first air vent, and the quick-insert valve includes a quick-insert connector and a quick-insert valve core. The quick-insert valve core is arranged in the quick-insert connector, one end of the quick-insert connector is connected to the valve core sleeve, and the other end is arranged at a port where the first air vent passes through one end of the main body.

4. A metal hydrogen storage combined valve according to claim 3, characterized in that: One end of the third air passage is connected to the valve core sleeve, and the other end is connected to the quick-insert connector.

5. A metal hydrogen storage combined valve according to claim 1, characterized in that: The second air passage is provided with a filter, and the filter is provided at a port where the second air passage passes through one end of the main body.

6. A metal hydrogen storage combined valve according to claim 1, characterized in that: The third air vent is provided with a pressure reducing valve, wherein a pressure reducing valve core is provided in the pressure reducing valve, and the pressure reducing valve core has a connecting position and a blocking position.

7. A metal hydrogen storage combined valve according to claim 6, characterized in that: When the one-way valve core is located at the inflation position, the pressure reducing valve core is located at the blocking position to block the third air passage; when the one-way valve core is located at the outlet position, the pressure reducing valve core is located at the connecting position to open the third air passage.

8. A metal hydrogen storage combined valve according to claim 1, characterized in that: The main body also includes a pressure relief passage, one end of which passes through the main body, and the other end of which is connected to the one-way valve.

9. A metal hydrogen storage combined valve according to claim 8, characterized in that: A sliding valve core is arranged at one end of the pressure relief passage connected to the one-way valve, a limiting member is arranged at one end of the pressure relief passage penetrating the main body, a temperature-sensitive glass ball is arranged between the sliding valve core and the limiting member, and the temperature-sensitive glass ball is used to limit the position of the sliding valve core.

10. A hydrogen storage system, characterized in that: A metal hydrogen storage combination valve comprising the combination valve according to any one of claims 1 to 9.

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