High-safety hydrogen storage device with hydrogen leakage buffering and combustion functions

Abstract

The invention relates to a high-safety hydrogen storage device with hydrogen leakage buffering and combustion, which comprises a protective shell, and a hydrogen storage device is hermetically arranged in the protective shell; a leakage buffer part for accommodating leaked hydrogen and a combustion part which is connected with the leakage buffer part and is used for carrying out combustion treatment on the leaked hydrogen are arranged outside the protective shell; the combustion part comprises an inner cavity used for combusting the leaked hydrogen and an outer cavity which is adjacent to the inner cavity and located on the outer side of the inner cavity. Cooling liquid is arranged in the outer cavity; the inner cavity is connected with a micro generator through a gas pipeline; the air outlet end of the micro generator is connected with the outer cavity through an air conveying pipeline. According to the hydrogen storage device, buffering and harmless treatment of hydrogen can be achieved, and high safety of the hydrogen storage device is effectively guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of hydrogen storage, and in particular to a high-safety hydrogen storage device with hydrogen leakage buffering and combustion capabilities. Background Art

[0002] As a renewable energy source, hydrogen offers advantages such as high energy density, high calorific value, and zero carbon emissions, leading to increasing interest in its energy. Hydrogen utilization encompasses its production, storage, transportation, and application, with storage being a crucial process. High-pressure gaseous hydrogen storage technology offers advantages such as simple equipment structure and process, as well as rapid filling and discharge rates. The technology is currently relatively mature.

[0003] Due to the high pressure in hydrogen storage tanks, hydrogen leaks are very likely to occur if they are affected by environmental fluctuations or human error. Since hydrogen has a wide explosion limit, when the volume fraction of leaked hydrogen mixed with air reaches 4%-75%, it is very likely to explode when exposed to a fire source. Therefore, the treatment of hydrogen leaks is very important.

[0004] In the related art, the Chinese patent application number is CN201911404815.5, and the invention name is a circulating adsorption type hydrogen leakage safety protection system and method. The system includes an active protection shell, and a leakage accumulation space is formed inside the active protection shell. A circulating adsorption structure and a one-way adjustment structure are installed inside the active protection shell. When hydrogen leaks, the hydrogen will enter the leakage accumulation space. The one-way adjustment structure controls the one-way transmission of the leaked hydrogen to the circulating adsorption structure. The physical or chemical adsorbent in the circulating adsorption structure is used to circulate the leaked hydrogen transmitted out in one direction to regulate the hydrogen in the leakage accumulation space so that the hydrogen in the leakage accumulation space no longer continues to accumulate. The circulating adsorption type hydrogen leakage safety protection system can actively operate on the leaked hydrogen, reducing the safety hazards caused by hydrogen leakage.

[0005] The aforementioned related technologies are only suitable for handling small amounts of hydrogen leaks due to the limited space for leakage accumulation and the limited amount of hydrogen adsorbed by physical or chemical adsorbents. However, when a hydrogen storage tank experiences an overpressure release, a large amount of hydrogen leaks in a short period of time. These related technologies are difficult to address in the case of overpressure releases. The technical problem to be solved by the present invention is how to safely handle overpressure releases of hydrogen. Summary of the Invention

[0006] In order to solve the above problems in the prior art, the present invention provides a high-safety hydrogen storage device with hydrogen leakage buffering and combustion.

[0007] In order to achieve the above objectives, the main technical solutions adopted by the present invention include:

[0008] A high-safety hydrogen storage device with hydrogen leakage buffering and combustion, comprising a protective shell in which a hydrogen storage device is sealed; a leakage buffer portion for accommodating leaked hydrogen is provided outside the protective shell, and a combustion portion connected to the leakage buffer portion for burning the leaked hydrogen; the combustion portion comprises an inner cavity for burning the leaked hydrogen and an outer cavity adjacent to the inner cavity and located outside the inner cavity; a coolant is provided in the outer cavity; the inner cavity is connected to a micro generator via a gas pipeline; and the gas outlet of the micro generator is connected to the outer cavity via the gas pipeline.

[0009] In one embodiment of the present invention, the hydrogen storage device includes an inner bracket arranged inside a protective shell; a plurality of cavities for accommodating gas cylinders are provided in the inner bracket; a plurality of gas cylinder limiting grooves corresponding to the bottoms of the cavities are provided on the bottom plate of the protective shell; gas flow channels are formed between the gas cylinder limiting grooves; and a gas outlet connected to a leakage buffer is formed in at least one of the gas cylinder limiting grooves.

[0010] In one embodiment of the present invention, the bottom of the inner bracket is sealed with the bottom plate; the top of the gas cylinder is connected in series through a gas valve and then connected to the outside through a gas supply connector; a hydrogen leakage sensor is provided at the gas outlet of each gas cylinder; the top of the inner bracket is sealed with the top sealing part; the top sealing part, the inner bracket and the bottom plate constitute the first sealed cavity on the outside of the gas cylinder.

[0011] In one embodiment of the present invention, the top of the protective shell is sealed and connected to an upper cover located on the outside of the top sealing part; the upper cover and the protective shell constitute a second sealed cavity outside the first sealed cavity; the top sealing part is connected to a control circuit board located in the second sealed cavity; and a connector is provided on the control circuit board.

[0012] In one embodiment of the present invention, a one-way valve is connected between the protective shell and the leakage buffer part for controlling the one-way transmission of the leaked hydrogen to the leakage buffer part; a one-way valve is connected between the leakage buffer part and the combustion part for controlling the one-way transmission of the leaked hydrogen to the combustion part.

[0013] In one embodiment of the present invention, a leakage buffer portion and a combustion portion are provided on one side of the protective shell; and an outer cover fixedly connected to the protective shell is provided outside the leakage buffer portion and the combustion portion.

[0014] In one embodiment of the present invention, the protective shell is connected to a first air pump through a first air pipeline; the first air pump is connected to a leakage buffer; and the leakage buffer is connected to the inner cavity through a second air pipeline.

[0015] In one embodiment of the present invention, the combustion part includes an outer shell and an inner shell arranged therein; the outer shell and the inner shell have openings located on the same side; the opening is sealed with a sealing cover to form an inner cavity in the middle of the inner shell, and an outer cavity is formed between the inner shell and the outer shell; an ignition device is provided in the inner shell; the ignition device includes an induction needle and an ignition needle; a sealing member is provided between the inner shell and the outer shell; the sealing member is tightly connected to the end faces of the inner shell and the outer shell respectively; the ignition device passes through the outer shell, the sealing member, and the inner shell in sequence and then extends into the inner cavity; the power supply connection part of the ignition device is located on the outside of the outer shell; the connection between the ignition device and the outer shell, the sealing member, and the inner shell is sealed.

[0016] In one embodiment of the present invention, the micro-generator is connected to the gas delivery hole located in the inner cavity of the sealing cover through a third gas delivery pipeline; the gas outlet end of the micro-generator is connected to the outer cavity through a fourth gas delivery pipeline; the outer cavity is connected to an overflow pipe connected to the outside; the micro-generator powers a warning light to indicate that a hydrogen leak has occurred and effectively perform combustion treatment.

[0017] In one embodiment of the present invention, the sealing cover is provided with an air supply hole connected to the inner cavity and heat dissipation fins; the inner cavity is connected to the second air pump through a fifth air supply pipe; the second air pump is provided with an air intake pipe.

[0018] The beneficial effects of the present invention are as follows: leaked hydrogen can be effectively temporarily stored through the leakage buffer portion, and further the leaked hydrogen can be input into the combustion portion for combustion treatment, thereby achieving harmless treatment and effectively avoiding the problem of fire or explosion caused by hydrogen leakage; the combustion portion can ensure combustion safety through a special structural design, and the coolant arranged inside the outer cavity can effectively control the temperature rise during combustion, so that the temperature is maintained within a reasonable range, avoiding additional risks caused by excessive temperature of the combustion portion; at the same time, the heat dissipation fins on the sealing cover can also effectively ensure the heat dissipation during combustion;

[0019] The structure of the outer cavity surrounding the inner cavity can effectively increase the heat dissipation area of ​​the inner cavity and improve the heat dissipation during combustion. The coolant can also quickly liquefy water vapor. When the coolant in the outer cavity reaches a certain level, it can be automatically discharged through the overflow pipe. The inner cavity can also store coolant for a long time.

[0020] The micro-generator can effectively utilize the water vapor produced by combustion, using the high-temperature water vapor to generate electricity. The micro-generator can supply the generated electricity to the warning light, which is used to indicate hydrogen leakage and that the hydrogen on the surface has been effectively burned. This alarm method is highly reliable and there is no possibility of false alarms. The only power source for the warning light is the electricity generated by the water vapor produced by hydrogen combustion. The lighting of the warning light also indicates that the hydrogen has been effectively burned.

[0021] The seal is sealed between the inner shell and the outer shell, which can effectively increase the effective contact area when the ignition device extends into the inner cavity, thereby providing a more effective sealing connection structure; the seal can effectively wrap the ignition device and achieve an effective airtight connection through gluing or other methods;

[0022] The first sealed cavity can provide a single layer of safety protection against hydrogen leakage, preventing leakage of hydrogen. The second sealing ring can provide a second layer of safety protection against hydrogen leakage. The leakage buffer can provide a third layer of safety protection. The combustion unit can provide a fourth layer of safety protection. The double-layer structure of the combustion unit can ensure stable combustion. The multiple safety protection redundancy design can maximize the safety of the hydrogen storage device. The rational structural design of the hydrogen storage device and the independent design of multiple gas cylinders can further reduce risks.

[0023] The first sealed cavity and the second sealed cavity can be evacuated to increase the response speed of the first air pump when hydrogen leaks; at the same time, the problem of hydrogen combustion or explosion can be effectively avoided during evacuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 The explosion of the present invention Figure 1 ;

[0026] Figure 2 The explosion of the present invention Figure 2 ;

[0027] Figure 3 Schematic diagram of the internal structure of the bottom plate of the protective shell of the present invention;

[0028] Figure 4 It is the front view of the present invention;

[0029] Figure 5 yes Figure 4 Middle AA section stereogram;

[0030] Figure 6 The explosion of the present invention Figure 3 ;

[0031] Figure 7 yes Figure 6 A partial enlarged schematic diagram;

[0032] Figure 8 is an exploded view of another embodiment of the present invention;

[0033] Figure 9 yes Figure 8 A partial enlarged schematic diagram is shown in the figure.

[0034] Description of reference numerals:

[0035] 10. Protective shell; 11. Bottom plate; 12. Gas cylinder limit groove; 13. Gas flow channel; 14. Gas outlet; 15. First sealing ring; 16. Third sealing ring; 100. Hydrogen storage device; 101. First sealed cavity; 102. Second sealed cavity; 110. Inner bracket; 111. Second sealing ring; 120. Gas cylinder; 130. Gas valve; 140. Gas transmission connector; 150. Hydrogen leakage sensor; 160. Top seal; 161. Connector; 162. Control circuit board; 20. Leakage buffer; 21. First gas pipeline; 22. First air pump; 23. First connecting part; 24. Second gas pipeline; 25. Second connecting part; 26. First one-way valve; 27. Pressure sensor; 30. Combustion part; 31. Outer shell; 311. Outer cavity; 312. Overflow pipe; 32. Inner shell; 321. Inner cavity; 33. Sealing cover; 331. Gas hole; 332. Heat dissipation fin; 34. Ignition device; 341. Induction needle; 342. Ignition needle; 343. Sealing element; 35. Micro generator; 351. Third gas pipeline; 352. Fourth gas pipeline; 36. Second air pump; 361. Fifth gas pipeline; 362. Intake pipeline; 40. Upper cover; 50. Outer cover. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention for which protection is sought, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," "the other end," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "provided with," "connected," etc., should be understood in a broad sense. For example, "connected" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; it may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0039] Examples, such as Figure 1-7 As shown:

[0040] A high-safety hydrogen storage device with hydrogen leakage buffering and combustion, comprising a protective shell 10, in which a hydrogen storage device 100 is sealed; the protective shell 10 can provide a sealed space to effectively prevent hydrogen from leaking outward. Hydrogen is a flammable and explosive gas. Once it leaks into the air, it mixes with the air to form a combustible mixture, which may cause an explosion or fire when it encounters a fire source. The sealing performance of the protective shell 10 can greatly reduce the risk of hydrogen leakage and ensure the safety of the surrounding environment and personnel. The protective shell 10 can withstand possible mechanical forces such as collisions, impacts, and extrusions from the outside. In one embodiment, the protective shell 10 is made of a material with fireproof and heat-insulating properties. When a fire occurs, the protective shell 10 can prevent external flames and heat from being transferred to the interior of the hydrogen storage device 100, slowing down the heating rate of the hydrogen storage container and reducing the possibility of hydrogen exploding due to thermal expansion.

[0041] The protective housing 10 is provided with a leakage buffer portion 20 for accommodating leaked hydrogen and a combustion portion 30 connected to the leakage buffer portion 20 for burning the leaked hydrogen; the leakage buffer portion 20 can effectively and quickly transfer the leaked hydrogen to the leakage buffer portion 20 for temporary storage; in one embodiment, the protective housing 10 and the leakage buffer portion 20 can be evacuated. When there is leaked hydrogen in the protective housing 10, the pressure increases, and the leaked hydrogen can be transferred to the leakage buffer portion 20. A one-way valve is provided at the connection between the leakage buffer portion 20 and the interior of the protective housing 10, allowing gas to flow only to the leakage buffer portion 20;

[0042] In one embodiment, the protective housing 10 is connected to a first air pump 22 via a first gas pipeline 21; the first air pump 22 is connected to a leakage buffer 20; a first connection portion 23 is formed between the first air pump 22 and the leakage buffer 20, and a one-way valve can be provided at the first connection portion 23 to allow only gas to flow into the leakage buffer 20; the leakage buffer 20 is connected to the inner cavity 321 via a second gas pipeline 24; a pressure sensor can be provided in the protective housing 10, and when a pressure change is detected, it indicates that there may be a hydrogen leak, and the first air pump 22 starts working to quickly pass the gas inside the protective housing 10 into the leakage buffer 20;

[0043] like Figure 7 As shown, in one embodiment, a pressure sensor 27 can be provided outside the gas outlet 14 to detect the overall gas leakage of all gas cylinders. When the pressure reaches a certain level, a signal is transmitted to the first gas pump 22 to pump the leaked hydrogen into the leakage buffer 20.

[0044] In one embodiment, the interior of the protective housing 10 and the leakage buffer 20 may also be vacuumed, and the pressure sensor can more easily monitor pressure changes; in one embodiment, the interior of the protective housing 10 and the leakage buffer 20 may not be vacuumed, and hydrogen can still be detected and discharged; in one embodiment, a hydrogen leakage sensor 150 may also be provided inside the protective housing 10 to detect whether there is hydrogen leakage, thereby controlling the operation of the first air pump 22;

[0045] In one embodiment, a second connection portion 25 is provided at the connection between the second gas pipeline 24 and the leakage buffer portion 20 . A one-way valve may be provided at the second connection portion 25 to only allow gas to flow out of the leakage buffer portion 20 .

[0046] In one embodiment, a first one-way valve 26 is provided on the second gas pipeline 24; when the first air pump 22 is working, the leaked hydrogen is drawn from the first sealed cavity 101 into the leakage buffer portion 20, and is further transported to the inner cavity 321 through the second gas pipeline 24. The ignition device 34 works to ignite the hydrogen. The water vapor generated by the combustion of the hydrogen in the inner cavity 321 enters the micro-generator 35 through the third gas pipeline 351 to generate electricity, thereby turning on the warning light. The steam further enters the outer cavity 311 and contacts with the coolant to liquefy into water. When a large amount of coolant is stored, it can automatically flow out from the overflow pipe 312; in one embodiment, a one-way valve can be provided on the overflow pipe 312 to prevent the cooling water from flowing back.

[0047] In one embodiment, the combustion section 30 includes an inner cavity 321 for burning the leaked hydrogen and an outer cavity 311 adjacent to the inner cavity 321 and located outside the inner cavity 321; a coolant is provided in the outer cavity 311; the inner cavity 321 is connected to the micro generator 35 through a gas pipeline; the gas outlet of the micro generator 35 is connected to the outer cavity 311 through a gas pipeline; by providing the inner cavity 321 and the outer cavity 311, the safety of hydrogen combustion can be further increased. Hydrogen burns in the inner cavity 321, and the coolant provided in the outer cavity 311 can be used for cooling and also achieve a certain protective effect; the combustion of hydrogen is isolated in a double-layer structure; the coolant is usually water; the amount of coolant provided in the outer cavity 311 does not need to be too much, generally 50%-80% is sufficient. When there is a hydrogen leak, the water generated by the hydrogen combustion will also be re-gathered in the outer cavity 311; the coolant can also achieve rapid liquefaction of water vapor;

[0048] In one embodiment of the present invention, the hydrogen storage device 100 includes an inner bracket 110 arranged inside the protective shell 10; a plurality of cavities for accommodating gas cylinders 120 are provided in the inner bracket 110; a plurality of gas cylinder limiting grooves 12 are provided on the bottom plate 11 of the protective shell 10 and are arranged corresponding to the bottom of the cavity; gas flow channels 13 are formed between the gas cylinder limiting grooves 12; and a gas outlet 14 connected to the leakage buffer part 20 is formed in at least one of the gas cylinder limiting grooves 12. The gas cylinder limit groove 12 can effectively ensure the relative stability of the gas cylinder 120 inside; the gas flow channel 13 can enable the adjacent cavities to realize gas circulation. When any gas cylinder 120 leaks, it can flow into the gas outlet 14 through the gas flow channel 13, and then enter the leakage buffer part 20; the inner bracket 110 divides the gas cylinder 120 into multiple small units, which can effectively reduce the risk. The inner bracket 110 can serve as a protection for the gas cylinder 120, and there is a protective shell 10 on the outside for further protection. The double-layer protection and double-layer airtight structure can also effectively enhance the safety of the hydrogen storage device 100.

[0049] In one embodiment of the present invention, the bottom of the inner bracket 110 is sealed with the bottom plate 11; the tops of the gas cylinders 120 are connected in series via a gas valve 130 and then connected to the outside via a gas connector 140; a hydrogen leakage sensor 150 is provided at the gas outlet of each gas cylinder 120; the hydrogen leakage sensor 150 is responsible for sensing leakage of each individual hydrogen cylinder, and upon detecting leakage, transmits a signal to shut down the corresponding individual hydrogen cylinder;

[0050] The top of the inner bracket 110 is sealed with the top seal 160; the top seal 160, the inner bracket 110, and the bottom plate 11 constitute the first sealed cavity 101 outside the gas cylinder 120. The top seal 160 and the inner bracket 110 are sealed with each other through a second sealing ring 111; the sealing part can also be glued to further enhance the sealing effect; the bottom of the inner bracket 110 is sealed with the bottom plate 11 to form a separate first sealed cavity 101; the inner bracket 110 can be sealed with the bottom plate 11 through a first sealing ring 15, and glue can be added between the inner bracket 110 and the bottom plate 11 to further enhance the airtightness; the gas valve 130 connects multiple gas cylinders in series, which can effectively connect multiple gas cylinders into an integrated structure. At the same time, by controlling the opening of the gas valve 130, it can effectively ensure that the hydrogen reserves in each gas cylinder 120 tend to be consistent.

[0051] In one embodiment, the gas valve 130 is further provided with a pressure sensor, which can be used to individually detect the pressure inside each gas cylinder 120, thereby facilitating control of the opening degree of each gas cylinder 120 to maintain relative consistency and assisting in leak detection. The hydrogen leak sensor 150 is used to provide a redundant design to help verify leaks.

[0052] In one embodiment of the present invention, the top of the protective shell 10 is sealed and connected with an upper cover 40 located on the outside of the top sealing part 160; the upper cover 40 and the protective shell 10 constitute a second sealed cavity 102 outside the first sealed cavity 101; the upper cover 40 and the protective shell 10 are sealed and connected via a third sealing ring 16; the top sealing part 160 is connected to a control circuit board 162 located in the second sealed cavity 102; a connector 161 is provided on the control circuit board 162. The first sealed cavity 101 can provide a single layer of safety protection against hydrogen leakage, preventing leakage of hydrogen. The second sealing ring 111 can provide a double layer of safety protection against hydrogen leakage. The leakage buffer 20 can provide a triple layer of safety protection. The combustion section 30 can provide a quadruple layer of safety protection. The double-layer structure of the combustion section 30 can ensure stable combustion. The multiple safety protection redundancy design can maximize the safety of the hydrogen storage device 100. The rational structural design of the hydrogen storage device 100 and the independent design of the multiple gas cylinders 120 can further reduce risks.

[0053] The control circuit board 162 is disposed within the second sealed cavity 102 to achieve effective isolation from the first sealed cavity 101. When hydrogen leaks, the hydrogen primarily remains within the first sealed cavity 101 and generally does not come into contact with the control circuit board 162, thereby preventing combustion due to static electricity on the control circuit board 162. In one embodiment, by evacuating the first and second sealed cavities 101, 102, combustion and explosion can be avoided in the event of a hydrogen leak.

[0054] In one embodiment of the present invention, a one-way valve is connected between the protective shell 10 and the leakage buffer part 20 for controlling the one-way transmission of the leaked hydrogen to the leakage buffer part 20; a one-way valve is connected between the leakage buffer part 20 and the combustion part 30 for controlling the one-way transmission of the leaked hydrogen to the combustion part 30.

[0055] In one embodiment of the present invention, a leakage buffer section 20 and a combustion section 30 are provided on the side of the bottom plate 11 of the protective housing 10 facing away from the hydrogen storage device 100; an outer cover 50 fixedly connected to the bottom plate 11 is provided on the outside of the leakage buffer section 20 and the combustion section 30. The outer cover 50 can protect the leakage buffer section 20 and the combustion section 30; at the same time, arranging the leakage buffer section 20 and the combustion section 30 at the bottom of the protective housing 10 can reduce the distance between the leakage buffer section 20 and the interior of the protective housing 10, facilitating the rapid transfer of leaked infringing substances to the leakage buffer section 20, and further to the combustion section 30 for combustion treatment;

[0056] In an embodiment of the present invention, the combustion part 30 includes an outer housing 31 and an inner housing 32 disposed therein; the outer housing 31 and the inner housing 32 have openings on the same side; the openings are hermetically connected to a sealing cover 33 to form an inner cavity 321 in the middle of the inner housing 32, and an outer cavity 311 is formed between the inner housing 32 and the outer housing 31; the structure formed by the inner housing 32 and the outer housing 31 is in a zigzag shape; the structure where the outer cavity 311 surrounds the inner cavity 321 can effectively increase the heat dissipation area of the inner cavity 321, enhance the heat dissipation during combustion, and the coolant can quickly liquefy the water vapor. When the coolant in the outer cavity 311 reaches a certain level, it can be automatically discharged through an overflow pipe 312; the inner cavity 321 can also store the coolant for a long time;

[0057] An ignition device 34 is provided inside the inner housing 32; the ignition device 34 includes an induction needle 341 and an ignition needle 342. During operation, the induction needle 341 senses the airflow drawn in by the first air pump 22, and then transmits signals to: a. The second air pump 36 draws in air to provide oxygen; b. The ignition needle 342 generates an electric spark to ignite hydrogen by oxygen. In an embodiment, the combustion of hydrogen can also be achieved without setting the second air pump 36. For example, when the leakage buffer part 20 is not evacuated, the airflow drawn into the inner cavity by the first air pump 22 contains air and leaked hydrogen, and the combustion effect can still be achieved through the ignition needle 342. In an embodiment, the induction needle 341 can be an airflow sensor, a pressure sensor, a hydrogen leakage sensor, etc., which can all sense the entry of the airflow and achieve the opening of the ignition needle 342. In an embodiment, the sensor on the induction needle 341 preferably uses an airflow sensor. In an embodiment, the ignition needle 342 can use a common ignition needle, such as a gas stove ignition needle;

[0058] A sealing member 343 is provided between the inner housing 32 and the outer housing 31; the sealing member 343 is tightly connected to the end faces of the inner housing 32 and the outer housing 31 respectively; the ignition device 34 sequentially passes through the outer housing 31, the sealing member 343, and the inner housing 32 and then extends into the inner cavity 321; the power supply connection part of the ignition device 34 is located outside the outer housing 31; the connection parts of the ignition device 34 with the outer housing 31, the sealing member 343, and the inner housing 32 are hermetically connected; the sensing part of the induction needle 341 is disposed in the inner cavity 321, and the ignition part of the ignition needle 342 is disposed in the inner cavity 321. The sealing member 343 is hermetically arranged between the inner housing 32 and the outer housing 31, which can effectively increase the effective contact area when the ignition device extends into the inner cavity 321, thereby providing a more effective sealing connection structure; the sealing member 343 can effectively wrap the ignition device and achieve an effective airtight connection through methods such as caulking;

[0059] In one embodiment of the present invention, the micro-generator 35 is connected to the gas delivery hole 331 located in the inner cavity 321 of the sealing cover 33 via a third gas delivery pipe 351; the gas outlet of the micro-generator 35 is connected to the outer cavity 311 via a fourth gas delivery pipe 352; the outer cavity 311 is connected to an overflow pipe 312 that is connected to the outside; the micro-generator 35 supplies power to a warning light to indicate that a hydrogen leak has occurred and that the hydrogen has been effectively burned. The micro-generator 35 can effectively utilize the water vapor generated by the combustion, using the high-temperature water vapor for power generation. The micro-generator 35 can supply the generated electricity to the warning light to indicate a hydrogen leak and that the hydrogen on the surface has been effectively burned. This type of alarm is highly reliable and has no possibility of false alarms. The only power source for the warning light is the electricity generated by the water vapor generated by the hydrogen combustion; and the lighting of the warning light also indicates that the hydrogen has been effectively burned. In one embodiment, the micro-generator can be a micro-water flow generator, which can also use high-temperature steam to generate electricity.

[0060] In one embodiment of the present invention, the sealing cover 33 is provided with an air delivery hole 331 communicating with the inner cavity 321 and heat dissipation fins 332. The inner cavity 321 is connected to a second air pump 36 via a fifth air delivery pipeline 361. The second air pump 36 is provided with an air inlet pipeline 362. The second air pump 36 is used to introduce air into the inner cavity 321 to ensure hydrogen combustion.

[0061] like Figure 8-9 As shown, the leakage buffer part 20 and the combustion part 30 are arranged on the side of the protective shell 10. The protective shell 10 is larger in size and can accommodate more gas cylinders inside. The top seal part 160 and the inner bracket 110 are sealed and connected to form a first sealed cavity outside the gas cylinder 120. Compared with the previous embodiment, in this embodiment, the bottom of the inner bracket 110 is a sealed structure and does not need to be sealed with the bottom plate 11 of the protective shell 10. The protective shell 10 is sealed and connected to the upper cover 40 to form a second sealed cavity outside the first sealed cavity. The first gas pipeline 21 is also connected to the first sealed cavity.

[0062] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's description and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A high-safety hydrogen storage device with hydrogen leakage buffering and combustion, characterized by: The invention comprises a protective shell (10) in which a hydrogen storage device (100) is sealed; a leakage buffer portion (20) for accommodating leaked hydrogen is provided outside the protective shell (10) and a combustion portion (30) connected to the leakage buffer portion (20) for burning the leaked hydrogen; the combustion portion (30) comprises an inner cavity (321) for burning the leaked hydrogen and an outer cavity (311) adjacent to the inner cavity (321) and located outside the inner cavity (321); a coolant is provided in the outer cavity (311); the inner cavity (321) is connected to a micro generator (35) via a gas pipeline; and the gas outlet of the micro generator (35) is connected to the outer cavity (311) via a gas pipeline.

2. A high-safety hydrogen storage device with hydrogen leakage buffering and combustion according to claim 1, characterized in that: The hydrogen storage device (100) comprises an inner bracket (110) arranged inside a protective shell (10); a plurality of cavities for accommodating gas cylinders (120) are provided in the inner bracket (110); a plurality of gas cylinder limiting grooves (12) arranged corresponding to the bottoms of the cavities are provided on the bottom plate (11) of the protective shell (10); gas flow channels (13) are formed between the gas cylinder limiting grooves (12); and a gas outlet (14) connected to a leakage buffer (20) is formed in at least one of the gas cylinder limiting grooves (12).

3. A high-safety hydrogen storage device with hydrogen leakage buffering and combustion according to claim 2, characterized in that: The bottom of the inner bracket (110) is sealedly connected to the bottom plate (11); the top of the gas cylinder (120) is connected in series via a gas valve (130) and then connected to the outside via a gas supply connector (140); a hydrogen leakage sensor (150) is provided at the gas outlet of each gas cylinder (120); the top of the inner bracket (110) is sealedly connected to the top seal portion (160); the top seal portion (160), the inner bracket (110), and the bottom plate (11) constitute a first sealed cavity (101) outside the gas cylinder (120).

4. A high-safety hydrogen storage device with hydrogen leakage buffering and combustion according to claim 3, characterized in that: The top of the protective shell (10) is sealedly connected to an upper cover (40) located outside the top sealing portion (160); the upper cover (40) and the protective shell (10) constitute a second sealed cavity (102) outside the first sealed cavity (101); the top sealing portion (160) is connected to a control circuit board (162) located in the second sealed cavity (102); and a connector (161) is provided on the control circuit board (162).

5. The high-safety hydrogen storage device with hydrogen leakage buffering and combustion according to claim 1, characterized in that: A one-way valve for controlling the one-way transmission of the leaked hydrogen to the leaked buffer (20) is connected between the protective shell (10) and the leakage buffer (20); and a one-way valve for controlling the one-way transmission of the leaked hydrogen to the combustion part (30) is connected between the leakage buffer (20) and the combustion part (30).

6. The high-safety hydrogen storage device with hydrogen leakage buffering and combustion according to claim 1, characterized in that: A leakage buffer portion (20) and a combustion portion (30) are provided on one side of the protective shell (10); an outer cover (50) fixedly connected to the protective shell (10) is provided outside the leakage buffer portion (20) and the combustion portion (30).

7. The high-safety hydrogen storage device with hydrogen leakage buffering and combustion according to claim 1, characterized in that: The protective housing (10) is connected to a first air pump (22) via a first air delivery pipeline (21); the first air pump (22) is connected to a leakage buffer portion (20); and the leakage buffer portion (20) is connected to an inner cavity (321) via a second air delivery pipeline (24).

8. The high-safety hydrogen storage device with hydrogen leakage buffering and combustion according to claim 1, characterized in that: The combustion part (30) comprises an outer shell (31) and an inner shell (32) arranged therein; the outer shell (31) and the inner shell (32) have openings located on the same side; the openings are sealed with a sealing cover (33) to form an inner cavity (321) in the middle of the inner shell (32), and an outer cavity (311) is formed between the inner shell (32) and the outer shell (31); an ignition device (34) is provided in the inner shell (32); the ignition device (34) comprises a sensing needle (341) and an ignition needle (342); the inner shell (31) is provided with an ignition device (34 ... 2) and the outer shell (31) are provided with a sealing member (343); the sealing member (343) is tightly connected to the end faces of the inner shell (32) and the outer shell (31) respectively; the ignition device (34) sequentially passes through the outer shell (31), the sealing member (343), and the inner shell (32) and then extends into the inner cavity (321); the power supply connection portion of the ignition device (34) is located outside the outer shell (31); the connection between the ignition device (34), the outer shell (31), the sealing member (343), and the inner shell (32) is sealed.

9. A high-safety hydrogen storage device with hydrogen leakage buffering and combustion according to claim 8, characterized in that: The micro-generator (35) is connected to a gas delivery hole (331) located at the inner cavity (321) of the sealing cover (33) via a third gas delivery pipeline (351); the gas outlet of the micro-generator (35) is connected to the outer cavity (311) via a fourth gas delivery pipeline (352); the outer cavity (311) is connected to an overflow pipe (312) that is in communication with the outside; the micro-generator (35) supplies power to a warning light to indicate that hydrogen leakage has occurred and that combustion has been effectively performed.

10. The high-safety hydrogen storage device with hydrogen leakage buffering and combustion according to claim 8, characterized in that: The sealing cover (33) is provided with an air delivery hole (331) communicating with the inner cavity (321) and a heat dissipation fin (332); the inner cavity (321) is connected to the second air pump (36) via a fifth air delivery pipeline (361); the second air pump (36) is provided with an air intake pipeline (362).

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