Hydrogen supply system with buffer function and hydrogen using equipment

Abstract

This invention discloses a hydrogen supply system and hydrogen consumption equipment with a buffer function, relating to the field of hydrogen fuel cell technology. The system includes a housing, inside which a hydrogen storage tank and a fuel cell are fixedly installed. An air pump is fixedly connected to the input end of the hydrogen storage tank, and a delivery pipe is fixedly connected to the output end of the air pump. One end of the delivery pipe is fixedly connected to the fuel cell. A buffer mechanism is provided on the surface of the fuel cell. This hydrogen supply system with a buffer function, when the hydrogen storage tank supplies hydrogen to the fuel cell through the air pump and delivery pipe, allows excess hydrogen to enter a pressure relief box through a pressure relief pipe when the pressure in the delivery pipe becomes too high. This pressure relief causes the excess hydrogen to move and enter the pressure relief box through the pressure relief port, thus buffering the hydrogen supply and reducing the risk of affecting the diffusion rate and reaction rate of hydrogen molecules within the fuel cell stack.

Description

Technical Field

[0001] This invention relates to the field of hydrogen fuel cell technology, specifically to a hydrogen supply system with buffering function and a hydrogen consumption device. Background Technology

[0002] Methanol-to-hydrogen power generation uses methanol as a liquid hydrogen carrier and achieves efficient and clean power generation through reforming hydrogen production and fuel cell technology. It not only solves the problem of hydrogen storage and transportation and supports distributed and flexible power supply to meet the needs of areas without power grids and mobile and backup power sources, but also improves energy utilization efficiency with zero sulfur and nitrogen emissions, low carbon dioxide emissions and combined heat and power advantages. It can be modularly assembled into small and medium-sized power plants, providing low-carbon energy solutions for industry and communities. It is a key technology for energy transition and green development.

[0003] In existing technologies, methanol-to-hydrogen power generation equipment typically uses multiple devices to produce hydrogen from methanol before feeding the hydrogen into the fuel cell stack to generate electricity. This not only results in huge equipment sizes, but also makes it prone to unstable delivery pressure during hydrogen transport. This directly affects the diffusion rate and reaction rate of hydrogen molecules within the stack, leading to uneven diffusion of gas between the cathode and anode, increased differences in local reaction rates, inconsistent voltages in individual cells, and even triggering a protective shutdown of the system.

[0004] Combining the above issues, we find that existing methanol-to-hydrogen power generation equipment on the market is difficult to avoid all of these problems simultaneously during use. Even if the problems can be solved, they require external tools, thus failing to achieve the desired effect. Therefore, we propose a hydrogen supply system and hydrogen consumption equipment with buffering function. Summary of the Invention

[0005] The purpose of this invention is to provide a hydrogen supply system and a hydrogen consumption device with a buffer function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a hydrogen supply system with a buffer function, comprising a housing, wherein a hydrogen storage tank and a fuel cell are fixedly installed inside the housing, an air pump is fixedly connected to the input end of the hydrogen storage tank, a delivery pipe is fixedly connected to the output end of the air pump, one end of the delivery pipe is fixedly connected to the fuel cell, and a buffer mechanism is provided on the surface of the fuel cell.

[0007] The buffer mechanism includes a buffer tank, which is fixedly installed on the surface of the fuel cell. The buffer tank and the side opposite to the delivery pipe are fixedly connected to a pressure relief pipe and a pressure replenishing pipe. The buffer tank is fixedly installed with a pressure relief assembly and a pressure replenishing assembly. The pressure relief assembly is fixedly connected to the pressure relief pipe, and the pressure replenishing assembly is fixedly connected to the pressure replenishing pipe. Several support springs are fixedly connected inside the buffer tank. One end of the several support springs is fixedly connected to a movable plate. The surface of the movable plate is slidably connected to the inner cavity of the buffer tank.

[0008] Preferably, a support sleeve is fixedly connected inside the buffer tank, and a support rod is fixedly connected to the side of the movable plate opposite to the support sleeve. One end of the support rod is slidably connected inside the support sleeve, and the surfaces of the support rod and the support sleeve are slidably connected to the inner cavity of the support spring.

[0009] Preferably, a sealing groove is provided on the periphery of the movable plate, and a sealing ring is fixedly installed inside the sealing groove. The surface of the sealing ring is slidably connected to the inner wall of the buffer tank.

[0010] Preferably, the pressure relief assembly includes a pressure relief box, which is fixedly installed inside the buffer tank. One end of the pressure relief box is fixedly connected to one end of the pressure relief pipe. A first blocking block is slidably connected inside the pressure relief box, and a support spring is fixedly connected inside the first blocking block. One end of the support spring passes through the first blocking block and is slidably connected to the inner cavity of the first blocking block. One end of the support spring is fixedly connected to the inner wall of the pressure relief box. A plurality of pressure relief ports are opened on the surface of the pressure relief box, and the pressure relief pipe is connected to the buffer tank through the pressure relief box and the pressure relief ports.

[0011] Preferably, the pressure relief box is internally fixedly connected with several limiting rods, one end of each of the limiting rods passing through the first block and slidingly connected to the inner cavity of the first block.

[0012] Preferably, a first positioning sleeve is fixedly connected inside the first block, and a first positioning rod is fixedly connected inside the pressure relief box. The surface of the first positioning rod is slidably connected to the inner cavity of the first positioning sleeve, and the surfaces of both the first positioning rod and the first positioning sleeve are slidably connected to the inner cavity of the pressure relief spring.

[0013] Preferably, the pressure replenishing assembly includes a pressure replenishing box, which is fixedly installed inside the buffer tank. A fixing block is fixedly installed inside the pressure replenishing box. A groove is formed on one side of the fixing block, and an opening is formed on one side of the pressure replenishing box. The opening communicates with the groove. A second blocking block is slidably connected inside the groove. A pressure replenishing spring is fixedly connected inside the second blocking block. One end of the pressure replenishing spring passes through the second blocking block and is slidably connected to the inner cavity of the second blocking block. One end of the pressure replenishing spring is fixedly connected to the inner wall of the groove. A through groove is formed on the side of the fixing block opposite to the opening. A plurality of pressure replenishing grooves are formed on the inner wall of the through groove. The pressure replenishing grooves communicate with the groove. The other side of the pressure replenishing box is fixedly connected to one end of a pressure replenishing pipe. The pressure replenishing pipe communicates with the buffer tank through the pressure replenishing box, the through groove, the pressure replenishing groove, the groove, and the opening.

[0014] Preferably, a second positioning rod is fixedly connected inside the second block, and a second positioning sleeve is fixedly connected inside the groove. One end of the second positioning rod is slidably connected inside the second positioning sleeve, and the surfaces of the second positioning rod and the second positioning sleeve are slidably connected to the inner cavity of the pressure spring.

[0015] Preferably, a limiting block is fixedly installed inside the groove, and a limiting groove is formed on the surface of the second block, with the inner cavity of the limiting groove slidingly connected to the surface of the limiting block.

[0016] A hydrogen supply system with buffer function includes a methanol storage tank, which is fixedly installed inside a housing. A hydrogen production tank is fixedly installed on one side of the housing. A methanol combustion stove is fixedly installed inside the hydrogen production tank and is connected to the methanol storage tank via a pipe. A catalyst tank is provided inside the hydrogen production tank. A purifier is fixedly installed inside the hydrogen production tank and is fixedly connected to both the hydrogen production tank and the catalyst tank. The purifier is also fixedly connected to the hydrogen storage tank via a pipe. A heat exchange coil is wound around the surface of the hydrogen production tank.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In this invention, when hydrogen is transported from the hydrogen storage tank to the fuel cell via a gas pump and a delivery pipe, during the transport process, if the pressure inside the delivery pipe is too high, excess hydrogen enters the pressure relief box through the pressure relief pipe and pushes the first block to move. This allows excess hydrogen to enter the pressure relief box through the pressure relief port to complete the pressure relief work, thereby buffering the hydrogen transport and reducing the risk of affecting the diffusion rate and reaction rate of hydrogen molecules in the fuel cell stack. When the hydrogen transport pressure is low, the pressure inside the delivery pipe is lower than the pressure in the buffer tank. At this time, the support spring drives the moving plate to move towards the pressure replenishment box, so that the hydrogen exerts pressure on the second block to push the second block to move, and allows the hydrogen to enter the delivery pipe through the pressure replenishment groove, through groove, pressure replenishment box and pressure replenishment pipe, effectively stabilizing the pressure in the delivery pipe and making the hydrogen transport more stable.

[0019] 2. This invention delivers a methanol-water solution from a methanol storage tank to a methanol combustion stove, where it is burned in a hydrogen production tank. The heat generated from the combustion directly heats the catalyst in the catalyst tank, causing a reforming reaction between the catalyst and the superheated steam produced by the combustion of the methanol-water solution. This generates hydrogen-rich gas, which is then cooled by heat exchange tubes and purified by a purifier before being output as high-purity hydrogen into a hydrogen storage tank. This eliminates the cumbersome steps of traditional hydrogen production processes, reduces equipment size through integrated design, and effectively improves hydrogen production efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the box structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the hydrogen production tank structure of the present invention;

[0023] Figure 4 This is a schematic cross-sectional view of the box structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the buffer tank structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the movable plate structure of the present invention;

[0026] Figure 7 This is a schematic diagram of the conveying pipe structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the pressure relief component structure of the present invention;

[0028] Figure 9 This is a schematic diagram of the pressure compensation component structure of the present invention;

[0029] Figure 10This is a schematic diagram of the fixing block structure of the present invention.

[0030] In the diagram: 1. Housing; 101. Methanol storage tank; 102. Hydrogen production tank; 103. Methanol combustion stove; 104. Catalyst tank; 105. Purifier; 106. Heat exchange coil; 107. Hydrogen storage tank; 108. Gas pump; 109. Delivery pipe; 110. Fuel cell; 2. Buffer mechanism; 21. Buffer tank; 22. Support spring; 2201. Support sleeve; 2202. Support rod; 23. Moving plate; 2301. Sealing groove; 2302. Sealing ring; 24. Pressure relief pipe; 25. Pressure relief assembly; 2501. Pressure relief box; 25 02. First blocking block; 2503. Pressure relief spring; 2504. Pressure relief port; 2505. Limiting rod; 2506. First positioning rod; 2507. First positioning sleeve; 26. Pressure replenishing assembly; 2601. Pressure replenishing box; 2602. Fixing block; 2603. Groove; 2604. Second blocking block; 2605. Pressure replenishing spring; 2606. Opening; 2607. Through groove; 2608. Pressure replenishing groove; 2609. Second positioning sleeve; 2610. Second positioning rod; 2611. Limiting block; 2612. Limiting groove; 27. Pressure replenishing pipe. Detailed Implementation

[0031] 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, and 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.

[0032] Example 1: Please refer to Figures 1-10 The present invention provides a technical solution: a hydrogen supply system with buffer function, including a box 1, a hydrogen storage tank 107 and a fuel cell 110 are fixedly installed inside the box 1, the input end of the hydrogen storage tank 107 is fixedly connected to a gas pump 108, the output end of the gas pump 108 is fixedly connected to a delivery pipe 109, one end of the delivery pipe 109 is fixedly connected to the fuel cell 110, and a buffer mechanism 2 is provided on the surface of the fuel cell 110.

[0033] The buffer mechanism 2 includes a buffer tank 21, which is fixedly installed on the surface of the fuel cell 110. A pressure relief pipe 24 and a pressure replenishing pipe 27 are fixedly connected to the side of the buffer tank 21 opposite to the delivery pipe 109. A pressure relief assembly 25 and a pressure replenishing assembly 26 are fixedly installed inside the buffer tank 21. The pressure relief assembly 25 is fixedly connected to the pressure relief pipe 24, and the pressure replenishing assembly 26 is fixedly connected to the pressure replenishing pipe 27. Several support springs 22 are fixedly connected inside the buffer tank 21, and one end of each support spring 22 is fixedly connected to a movable plate 23. The surface of the movable plate 23... The surface of the moving plate 23 is slidably connected to the inner cavity of the buffer tank 21; a support sleeve 2201 is fixedly connected inside the buffer tank 21; a support rod 2202 is fixedly connected to the side of the moving plate 23 opposite to the support sleeve 2201; one end of the support rod 2202 is slidably connected inside the support sleeve 2201; the surfaces of the support rod 2202 and the support sleeve 2201 are slidably connected to the inner cavity of the support spring 22; a sealing groove 2301 is opened on the periphery of the moving plate 23; a sealing ring 2302 is fixedly installed inside the sealing groove 2301; the surface of the sealing ring 2302 is slidably connected to the inner wall of the buffer tank 21.

[0034] When hydrogen is supplied from the hydrogen storage tank 107 to the fuel cell 110 via the gas pump 108 and the delivery pipe 109, if the pressure in the delivery pipe 109 is too high, the excess hydrogen enters the buffer tank 21 through the pressure relief pipe 24 and the pressure relief assembly 25 to buffer the supplied hydrogen and prevent the pressure in the delivery pipe 109 from becoming too high. When the pressure in the delivery pipe 109 is too low, the support spring 22 supports the moving plate 23 to reduce the hydrogen storage space in the buffer tank 21, so that the hydrogen enters the delivery pipe 109 through the pressure replenishment assembly 26 and the pressure replenishment pipe 27 to replenish the hydrogen in the delivery pipe 109. Through automatic and flexible pressure relief and replenishment, the impact of unstable pressure in the delivery pipe 109 on the fuel cell 110 is effectively reduced.

[0035] As a further definition of the buffer mechanism 2 of the present invention, the pressure relief assembly 25 includes a pressure relief box 2501, which is fixedly installed inside the buffer tank 21. One end of the pressure relief box 2501 is fixedly connected to one end of the pressure relief pipe 24. A first block 2502 is slidably connected inside the pressure relief box 2501. A support spring 22 is fixedly connected inside the first block 2502. One end of the support spring 22 passes through the first block 2502 and is slidably connected to the inner cavity of the first block 2502. One end of the support spring 22 is fixedly connected to the inner wall of the pressure relief box 2501. The surface of 01 has several pressure relief ports 2504. The pressure relief pipe 24 is connected to the buffer tank 21 through the pressure relief box 2501 and the pressure relief ports 2504. When the pressure in the delivery pipe 109 is too high, the excess hydrogen enters the pressure relief box 2501 through the pressure relief pipe 24 and pushes the first block 2502 to move, so that the excess hydrogen enters the pressure relief box 2501 through the pressure relief ports 2504 to complete the pressure relief work, thereby playing a buffering role in the hydrogen delivery. After the pressure inside the delivery pipe 109 stabilizes, the pressure relief spring 2503 drives the first block 2502 to reset to stop the pressure relief work.

[0036] The pressure relief box 2501 has several limiting rods 2505 fixedly connected inside. One end of each limiting rod 2505 passes through the first block 2502 and is slidably connected to the inner cavity of the first block 2502. The first block 2502 has a first positioning sleeve 2507 fixedly connected inside. The pressure relief box 2501 has a first positioning rod 2506 fixedly connected inside. The surface of the first positioning rod 2506 is slidably connected to the inner cavity of the first positioning sleeve 2507. The first positioning rod 2506 and the first positioning sleeve 2507 are... The surfaces of 7 are all slidably connected to the inner cavity of the pressure relief spring 2503; one end of each of the several limiting rods 2505 passes through the first block 2502 and is slidably connected to the inner cavity of the first block 2502, which can effectively stabilize the position of the first block 2502 and ensure the stability of the position of the first block 2502. The first positioning rod 2506 and the first positioning sleeve 2507 can effectively stabilize the position of the pressure relief spring 2503, and prevent the pressure relief spring 2503 from twisting, deforming or other situations that would affect the support effect.

[0037] The specific implementation of this embodiment is as follows: When the hydrogen storage tank 107 supplies hydrogen to the fuel cell 110 through the gas pump 108 and the delivery pipe 109, when the pressure inside the delivery pipe 109 is too high, the excess hydrogen enters the pressure relief box 2501 through the pressure relief pipe 24 and pushes the first block 2502 to move. The position of the first block 2502 is stabilized by the limiting rod 2505, so that the excess hydrogen enters the pressure relief box 2501 through the pressure relief port 2504 to complete the pressure relief work, thereby playing a buffering role in the hydrogen supply. Furthermore, by exposing different numbers of pressure relief ports 2504, an adaptive pressure relief effect is achieved. After the pressure inside the delivery pipe 109 stabilizes, the pressure relief spring is stabilized by the first positioning rod 2506 and the first positioning sleeve 2507. The position of 2503 allows the pressure relief spring 2503 to drive the first block 2502 to reset and stop the pressure relief operation. When the pressure in the delivery pipe 109 is too low, the support rod 2202 and the support sleeve 2201 stabilize the position of the support spring 22, and the sealing ring 2302 seals between the moving plate 23 and the inner wall of the buffer tank 21, so that the support spring 22 supports the moving plate 23 to reduce the storage space of hydrogen in the buffer tank 21. This allows hydrogen to enter the delivery pipe 109 through the pressure replenishment component 26 and the pressure replenishment pipe 27 to replenish the hydrogen in the delivery pipe 109. Through automatic and flexible pressure relief and replenishment, the impact of unstable pressure in the delivery pipe 109 on the fuel cell 110 is effectively reduced.

[0038] Example 2: Please refer to Figures 1-10 The present invention provides a technical solution: a hydrogen supply system with buffer function, and the present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0039] As a further definition of the buffer mechanism 2 of the present invention, the pressure-replenishing assembly 26 includes a pressure-replenishing box 2601, which is fixedly installed inside the buffer tank 21. A fixing block 2602 is fixedly installed inside the pressure-replenishing box 2601. A groove 2603 is formed on one side of the fixing block 2602, and an opening 2606 is formed on one side of the pressure-replenishing box 2601. The opening 2606 communicates with the groove 2603. A second blocking block 2604 is slidably connected inside the groove 2603, and a second blocking block 2604 is fixedly connected inside the second blocking block 2604. A pressure-reducing spring 2605 has one end that passes through the second block 2604 and is slidably connected to the inner cavity of the second block 2604. Another end of the pressure-reducing spring 2605 is fixedly connected to the inner wall of the groove 2603. A through groove 2607 is provided on the side of the fixed block 2602 opposite to the opening 2606. Several pressure-reducing grooves 2608 are provided on the inner wall of the through groove 2607. The pressure-reducing grooves 2608 are connected to the groove 2603. The other side of the pressure-reducing box 2601 is fixedly connected to one end of the pressure-reducing pipe 27. 7 is connected to the buffer tank 21 via the pressure-replenishing box 2601, through groove 2607, pressure-replenishing slot 2608, groove 2603, and opening 2606. When the hydrogen delivery pressure is low, the pressure in the delivery pipe 109 is lower than the pressure in the buffer tank 21. At this time, the support spring 22 drives the moving plate 23 to move towards the pressure-replenishing box 2601. The movement of the moving plate 23 reduces the hydrogen storage space in the buffer tank 21, allowing hydrogen to enter the pressure-replenishing box 2601 through the opening 2606 and exert pressure on the second block 2604. The second block 2604 is moved to allow the opening 2606 to connect with the through groove 2607 through the groove 2603 and the pressure replenishing groove 2608. This allows hydrogen to enter the delivery pipe 109 through the pressure replenishing groove 2608, the through groove 2607, the pressure replenishing box 2601, and the pressure replenishing pipe 27, effectively stabilizing the pressure in the delivery pipe 109. When the pressure inside the delivery pipe 109 is stable, the pressure replenishing spring 2605 drives the second block 2604 to reset, causing the second block 2604 to re-close the opening 2606 and stop the pressure replenishing operation.

[0040] The second blocking block 2604 is internally fixedly connected to a second positioning rod 2610, and the groove 2603 is internally fixedly connected to a second positioning sleeve 2609. One end of the second positioning rod 2610 is slidably connected to the inside of the second positioning sleeve 2609. The surfaces of the second positioning rod 2610 and the second positioning sleeve 2609 are slidably connected to the inner cavity of the pressure-reducing spring 2605. A limiting block 2611 is fixedly installed inside the groove 2603, and a limiting groove 2612 is formed on the surface of the second blocking block 2604. The inner cavity of the limiting groove 2612 is slidably connected to the surface of the limiting block 2611. The second positioning rod 2610 and the second positioning sleeve 2609 can effectively stabilize the position of the pressure-reducing spring 2605, preventing the pressure-reducing spring 2605 from twisting or deforming and affecting the support effect. The limiting block 2611 and the limiting groove 2612 can effectively stabilize the position of the second blocking block 2604, ensuring the stability of the second blocking block 2604 when it moves.

[0041] The specific implementation of this embodiment is as follows: When the hydrogen delivery pressure is low, the pressure in the delivery pipe 109 is lower than the pressure in the buffer tank 21. At this time, the support spring 22 drives the moving plate 23 to move towards the pressure replenishment box 2601. The movement of the moving plate 23 reduces the hydrogen storage space in the buffer tank 21, allowing hydrogen to enter the pressure replenishment box 2601 through the opening 2606 and exert pressure on the second block 2604 to push the second block 2604 to move. The position of the second block 2604 is stabilized by the limiting block 2611 and the limiting groove 2612 to prevent the second block 2604 from shifting position. The opening 2606 connects with the through groove 2603 and the pressure replenishment groove 2608 through the through groove. 2607 is connected, allowing hydrogen gas to enter the delivery pipe 109 through the pressure replenishment tank 2608, the through channel 2607, the pressure replenishment box 2601, and the pressure replenishment pipe 27, effectively stabilizing the pressure in the delivery pipe 109. When the pressure inside the delivery pipe 109 is stable, the position of the pressure replenishment spring 2605 is stabilized by the second positioning rod 2610 and the second positioning sleeve 2609, preventing the pressure replenishment spring 2605 from twisting or deforming. This causes the pressure replenishment spring 2605 to drive the second block 2604 to reset, causing the second block 2604 to re-close the opening 2606 to stop the pressure replenishment work. Furthermore, by moving the second block 2604, different numbers of pressure replenishment ports are exposed, achieving an adaptive pressure replenishment effect.

[0042] Example 3: Please refer to Figures 1-10This invention provides a technical solution: a hydrogen supply system with buffer function, comprising a methanol storage tank 101, which is fixedly installed inside a housing 1. A hydrogen production tank 102 is fixedly installed on one side inside the housing 1. A methanol combustion stove 103 is fixedly installed inside the hydrogen production tank 102 and is connected to the methanol storage tank 101 via a pipe. A catalyst tank 104 is provided inside the hydrogen production tank 102, and a purifier 105 is fixedly installed inside the hydrogen production tank 102. The purifier 105 is connected to both the hydrogen production tank 102 and the catalyst tank 104. 4. Fixed connection: Purifier 105 is fixedly connected to hydrogen storage tank 107 via a pipeline. Heat exchange coil 106 is wound around the surface of hydrogen production tank 102. The housing 1 also includes a methanol pump, solenoid valve, tee connector, methanol delivery pipeline, etc., for transporting methanol-water solution; this is existing technology and will not be elaborated further. The housing 1 also includes an inverter for converting the DC power generated by fuel cell 110 into AC power; this is existing technology and will not be elaborated further. The housing 1 also includes a microcontroller, mainly used for overall equipment control. The microcontroller is existing technology and will not be discussed further here. The purifier 105 is a membrane separation purifier, which uses the characteristic of a palladium membrane that only allows hydrogen atoms to pass through to achieve gas separation and output ultra-high purity hydrogen. This is also existing technology and will not be discussed further here. The methanol storage tank 101 stores a methanol-water solution composed of methanol and demineralized water. The methanol-water solution enters the methanol combustion stove 103 and is directly burned in the hydrogen production tank 102. The heat from the combustion of the methanol-water solution directly heats the catalyst in the catalyst tank 104. The combustion of the catalyst and the methanol-water solution produces a flux... Hot steam undergoes a reforming reaction to generate hydrogen-rich gas. After being cooled by heat exchange tubes, the gas is purified by purifier 105 and output as high-purity hydrogen into hydrogen storage tank 107. Subsequently, the high-purity hydrogen in hydrogen storage tank 107 enters fuel cell stack 110 for power generation through gas pump 108, delivery pipe 109 and buffer mechanism 2. This not only integrates various devices required for hydrogen production and power generation into one unit, effectively reducing the size of the equipment, but also effectively improves hydrogen production efficiency by directly burning methanol-water solution. Furthermore, the waste heat generated during hydrogen production can be effectively recovered through heat exchange coil 106 for heating purposes.

[0043] The specific implementation of this embodiment is as follows: When hydrogen production is required, the methanol storage tank 101 transports the methanol-water solution inside to the methanol combustion stove 103, so that the methanol-water solution is burned in the hydrogen production tank 102 through the methanol combustion stove 103. The heat generated by the combustion directly heats the catalyst in the catalyst tank 104, so that the catalyst and the superheated steam generated by the combustion of the methanol-water solution undergo a reforming reaction to generate hydrogen-rich gas. After being cooled by heat exchange tubes, the gas is purified by purifier 105 and output as high-purity hydrogen into the hydrogen storage tank 107, which effectively improves the hydrogen production efficiency and reduces the size of the equipment through integrated design. Subsequently, the high-purity hydrogen in the hydrogen storage tank 107 enters the fuel cell 110 stack for power generation through the gas pump 108, the delivery pipe 109 and the buffer mechanism 2. The heat exchange coil 106 recovers waste heat during the heat exchange process for use in heating, etc.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydrogen supply system with a buffer function, comprising a box (1), characterized in that: The hydrogen storage tank (107) and fuel cell (110) are fixedly installed inside the housing (1). The input end of the hydrogen storage tank (107) is fixedly connected to a gas pump (108), and the output end of the gas pump (108) is fixedly connected to a delivery pipe (109). One end of the delivery pipe (109) is fixedly connected to the fuel cell (110), and a buffer mechanism (2) is provided on the surface of the fuel cell (110). The buffer mechanism (2) includes a buffer tank (21), which is fixedly installed on the surface of the fuel cell (110). The buffer tank (21) and the side opposite to the delivery pipe (109) are fixedly connected to a pressure relief pipe (24) and a pressure replenishing pipe (27). The buffer tank (21) is fixedly installed with a pressure relief assembly (25) and a pressure replenishing assembly (26). The pressure relief assembly (25) is fixedly connected to the pressure relief pipe (24), and the pressure replenishing assembly (26) is fixedly connected to the pressure replenishing pipe (27). The buffer tank (21) is fixedly connected with a number of support springs (22). One end of the number of support springs (22) is fixedly connected to a moving plate (23). The surface of the moving plate (23) is slidably connected to the inner cavity of the buffer tank (21).

2. The hydrogen supply system with a buffer function according to claim 1, characterized by: The buffer tank (21) is fixedly connected to a support sleeve (2201). The moving plate (23) is fixedly connected to a support rod (2202) on the side opposite to the support sleeve (2201). One end of the support rod (2202) is slidably connected to the inside of the support sleeve (2201). The surfaces of the support rod (2202) and the support sleeve (2201) are slidably connected to the inner cavity of the support spring (22).

3. The hydrogen supply system with a buffer function according to claim 2, characterized by: The movable plate (23) has a sealing groove (2301) on its periphery. A sealing ring (2302) is fixedly installed inside the sealing groove (2301). The surface of the sealing ring (2302) is slidably connected to the inner wall of the buffer tank (21).

4. The hydrogen supply system having a buffer function according to claim 1, characterized by: The pressure relief assembly (25) includes a pressure relief box (2501), which is fixedly installed inside the buffer tank (21). One end of the pressure relief box (2501) is fixedly connected to one end of the pressure relief pipe (24). A first block (2502) is slidably connected inside the pressure relief box (2501). A support spring (22) is fixedly connected inside the first block (2502). One end of the support spring (22) passes through the first block (2502) and is slidably connected to the inner cavity of the first block (2502). One end of the support spring (22) is fixedly connected to the inner wall of the pressure relief box (2501). Several pressure relief ports (2504) are opened on the surface of the pressure relief box (2501). The pressure relief pipe (24) is connected to the buffer tank (21) through the pressure relief box (2501) and the pressure relief ports (2504).

5. The hydrogen supply system having a buffer function according to claim 4, characterized by: The pressure relief box (2501) is internally fixedly connected with several limiting rods (2505), one end of each limiting rod (2505) passes through the first block (2502) and is slidably connected to the inner cavity of the first block (2502).

6. The hydrogen supply system having a buffer function according to claim 4, characterized by: The first blocking block (2502) is fixedly connected to the inside of the first positioning sleeve (2507), and the pressure relief box (2501) is fixedly connected to the inside of the first positioning rod (2506). The surface of the first positioning rod (2506) is slidably connected to the inner cavity of the first positioning sleeve (2507), and the surfaces of the first positioning rod (2506) and the first positioning sleeve (2507) are both slidably connected to the inner cavity of the pressure relief spring (2503).

7. A hydrogen supply system with buffering function according to claim 1, characterized in that: The pressure-replenishing assembly (26) includes a pressure-replenishing box (2601), which is fixedly installed inside the buffer tank (21). A fixing block (2602) is fixedly installed inside the pressure-replenishing box (2601). A groove (2603) is provided on one side of the fixing block (2602), and an opening (2606) is provided on one side of the pressure-replenishing box (2601). The opening (2606) communicates with the groove (2603). A second blocking block (2604) is slidably connected inside the groove (2603). A pressure-replenishing spring (2605) is fixedly connected inside the second blocking block (2604). One end of the pressure-replenishing spring (2605) passes through the second blocking block (2604) and... The inner cavity of the second block (2604) is slidably connected. One end of the pressure-reducing spring (2605) is fixedly connected to the inner wall of the groove (2603). The fixed block (2602) has a through groove (2607) on the side opposite to the opening (2606). The inner wall of the through groove (2607) has several pressure-reducing grooves (2608). The pressure-reducing grooves (2608) are connected to the groove (2603). The other side of the pressure-reducing box (2601) is fixedly connected to one end of the pressure-reducing pipe (27). The pressure-reducing pipe (27) is connected to the buffer tank (21) through the pressure-reducing box (2601), through groove (2607), pressure-reducing groove (2608), groove (2603) and opening (2606).

8. A hydrogen supply system with buffering function according to claim 7, characterized in that: The second blocking block (2604) is fixedly connected to the inside of the second positioning rod (2610), and the groove (2603) is fixedly connected to the inside of the second positioning sleeve (2609). One end of the second positioning rod (2610) is slidably connected to the inside of the second positioning sleeve (2609), and the surfaces of the second positioning rod (2610) and the second positioning sleeve (2609) are slidably connected to the inner cavity of the pressure spring (2605).

9. A hydrogen supply system with buffering function according to claim 7, characterized in that: A limiting block (2611) is fixedly installed inside the groove (2603), and a limiting groove (2612) is formed on the surface of the second block (2604). The inner cavity of the limiting groove (2612) is slidably connected to the surface of the limiting block (2611).

10. A hydrogen-using device for a hydrogen supply system with buffering function according to any one of claims 1-9, characterized in that: The system includes a methanol storage tank (101), which is fixedly installed inside a housing (1). A hydrogen production tank (102) is fixedly installed on one side of the housing (1). A methanol combustion stove (103) is fixedly installed inside the hydrogen production tank (102). The methanol combustion stove (103) is fixedly connected to the methanol storage tank (101) through a pipe. A catalyst tank (104) is opened inside the hydrogen production tank (102). A purifier (105) is fixedly installed inside the hydrogen production tank (102). The purifier (105) is fixedly connected to the hydrogen production tank (102) and the catalyst tank (104) respectively. The purifier (105) is fixedly connected to the hydrogen storage tank (107) through a pipe. A heat exchange coil (106) is wound around the surface of the hydrogen production tank (102).

Images