Hydrogen production device with automatic pressure relief function

Abstract

The present application relates to the field of hydrogen storage, and discloses a hydrogen production device with automatic pressure relief function.The hydrogen production device comprises an air inlet pipeline, one end of which is connected with the hydrogen production device and the other end is connected with a hydrogen storage tank; a pressure relief driving member is arranged at the bottom of the hydrogen storage tank, and the pressure relief driving member is lifted and lowered by the accumulation of hydrogen gas; when the pressure relief driving member is pressed down, the first pressure relief member is driven to descend and connect with the first pressure relief tank, so that hydrogen gas is guided into the pressure relief tank; a transmission member is arranged in the hydrogen storage tank, and the transmission member is driven by the pressure relief driving member to make the second pressure relief member extend into the air inlet pipeline; the air inlet pipeline uses airflow to accelerate the second pressure relief member to transport hydrogen gas into the second pressure relief tank, thereby realizing shunt pressure relief. Through the two pressure relief members, not only pressure relief protection can be realized, but also the speed of pressure relief can be accelerated to meet different working conditions when hydrogen gas is produced, thereby preventing the problem of excessive gas pressure and safety hazards.

Description

Technical Field

[0001] This invention relates to the field of hydrogen storage, and in particular to a hydrogen production device with an automatic pressure relief function. Background Technology

[0002] A hydrogen production unit is a device or system used to convert water or other raw materials into hydrogen gas. Hydrogen production units can achieve hydrogen production through different processes and technologies. Common hydrogen production units include water electrolysis, water pyrolysis, and chemical reaction hydrogen production units. Hydrogen production units have significant application value in the energy sector, providing hydrogen for hydrogen energy and fuel cells. They are also widely used in industrial production and chemical industries.

[0003] In addition, a prior art patent, application number 2020225411155, discloses a hydrogen production device with an overpressure relief protection mechanism. This patent mainly transports the produced hydrogen gas through an inlet pipe to a pressure relief storage cylinder. The pressure inside the pressure relief storage cylinder is increased by the compression of the movable plate and spring in the cylinder, so that it can hold more hydrogen gas.

[0004] The pressure relief protection in the aforementioned patent relies solely on increasing the volume of the storage cylinder by increasing the mass of hydrogen, thus creating a larger storage space while meeting the rated hydrogen storage capacity. However, during hydrogen production, sometimes the hydrogen output is normal, sometimes slightly exceeds the rated amount, and sometimes there is a significant overproduction. The pressure relief protection structure in the aforementioned patent is too simplistic to address these different situations and cannot meet the corresponding usage requirements. Of course, existing technologies also include a structure similar to a one-way valve installed on the inner wall of the hydrogen storage cylinder, with an empty hydrogen storage cylinder connected to the other end of the one-way valve. When hydrogen is produced and flows out, the gas squeezes one end of the one-way valve, forcing it to open and allowing hydrogen to enter the empty hydrogen storage cylinder, thus relieving the pressure in the original storage cylinder. While this approach can address situations where hydrogen production is too high or too low, it cannot quickly divert hydrogen when large quantities are produced. This leads to an excessive accumulation of hydrogen in the original storage cylinder, while the rate of hydrogen flowing into the empty storage cylinder is low, posing a safety hazard. Therefore, we urgently need a technology that can both meet the pressure relief protection requirements of different hydrogen production levels and provide rapid pressure relief protection for hydrogen exceeding the rated capacity. Summary of the Invention

[0005] The purpose of this invention is to provide a hydrogen production device with an automatic pressure relief function to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows:

[0007] A hydrogen production device with automatic pressure relief function includes: an inlet pipe, one end of which is connected to the hydrogen production device and the other end of which is connected to a hydrogen storage tank;

[0008] The bottom of the hydrogen storage tank is equipped with a pressure relief drive component. The pressure relief drive component moves up and down by relying on the accumulation of hydrogen. When the pressure relief drive component is pressed down, it drives the first pressure relief component to descend and connect to the first pressure relief tank, so that hydrogen is introduced to relieve pressure.

[0009] The hydrogen storage tank is equipped with a transmission component. The transmission component is driven by the pressure relief drive component to extend the second pressure relief component into the air intake pipe. The air intake pipe uses airflow to accelerate the second pressure relief component to deliver hydrogen to the second pressure relief tank, thereby achieving diversion and pressure relief.

[0010] As a preferred embodiment of the present invention, the second pressure relief component includes:

[0011] The lifting seat is installed inside the air intake pipe. The lifting seat has a flow guide cavity. The flow guide cavity is a C-shaped conductive structure facing the direction of hydrogen flow. One opening is connected to the air intake pipe, and the other opening is connected to the second pressure relief tank. When the lifting seat is in the initial position, the two openings of the flow guide cavity are in a closed state.

[0012] As a preferred embodiment of the present invention, a gap is left between the lifting seat and the air intake pipe when the lifting seat extends into the air intake pipe.

[0013] As a preferred embodiment of the present invention, the guide cavity is composed of an air inlet cavity and an air delivery cavity. The upper inner wall of the air inlet cavity is provided with a guide arc surface and is outwardly expanding. The internal size of the air delivery cavity is larger than the internal size of the air inlet cavity.

[0014] As a preferred embodiment of the present invention, the gas delivery chamber is provided with a receiving space and a gas outlet chamber. A rotating rod is provided in the receiving space, and a plurality of blades are distributed circumferentially on the rotating rod. The blades are pushed and rotated by the airflow and drive hydrogen to be delivered to the gas outlet chamber.

[0015] As a preferred embodiment of the present invention, an air inlet is provided on the opening side of the air inlet chamber of the lifting seat. The air inlet is connected to the accommodating space, and the air outlet of the air inlet corresponds to one end face of the blade. After air is introduced, it pushes the blade to accelerate rotation.

[0016] As a preferred embodiment of the present invention, the pressure relief drive includes:

[0017] The bottom of the hydrogen storage tank has a sliding cavity, and a stopper plate is disposed in the sliding cavity. A sealing ring is disposed between the stopper plate and the inner wall of the sliding cavity. A first transmission rod with a gear is vertically disposed at the bottom of the stopper plate. A first elastic element is sleeved on the first transmission rod and pushes the top of the stopper plate to be flush with the bottom of the hydrogen storage tank.

[0018] As a preferred embodiment of the present invention, the first pressure relief component includes:

[0019] A through hole is provided on the side wall of the sliding cavity, and a receiving groove is provided at the bottom of the through hole. A second elastic element is provided in the receiving groove, and a door panel is connected to the second elastic element. A protrusion is provided on the top of the door panel, and a positioning groove is provided in the through hole. The second elastic element drives the door panel to make the protrusion cooperate with the positioning groove, so that the through hole remains sealed.

[0020] The door panel is provided with a side protrusion. When the plug plate is pressed down, it drives the side protrusion to lower the door panel, thus connecting the hydrogen storage tank and the first pressure relief tank.

[0021] As a preferred embodiment of the present invention, a notch is provided on the side wall of the sliding cavity and is located on one side of the receiving groove. When the door panel descends, it causes the side protrusion to reach the notch.

[0022] As a preferred embodiment of the present invention, the transmission component includes:

[0023] The hydrogen storage tank is equipped with a lifting rod connected to the bottom of the lifting seat. One end of the lifting rod is connected to a sliding rod, and one end of the sliding rod is mounted on the side wall of the sliding cavity. A second transmission rod with a gear is provided on the sliding rod. The second transmission rod and the first transmission rod are respectively meshed with transmission gears. As the first transmission rod descends, it drives the second transmission rod to rise through meshing with the transmission gear.

[0024] In summary, this invention has the following beneficial effects: it transports hydrogen produced by the hydrogen production device to a hydrogen storage tank for convenient supply to other equipment or systems when needed, ensuring a stable supply and safe storage of hydrogen. However, during the hydrogen production process, excessive production may occur. In this case, the produced hydrogen enters the hydrogen storage tank through the inlet pipe. As the hydrogen accumulates, its mass increases. When it reaches a certain level, the pressure relief drive component is compressed by the hydrogen, causing it to descend and pulling the first pressure relief component down with it. At this point, the first pressure relief component opens, allowing hydrogen to flow into the first pressure relief tank, releasing the pressure in the hydrogen storage tank and providing a safety protection function. When the amount of hydrogen produced far exceeds the rated amount, the pressure relief drive will descend to the bottom and drive the transmission component. The transmission component will then cause the second pressure relief component to extend into the intake pipe. At this time, the airflow generated by the hydrogen will drive the second pressure relief component, allowing the hydrogen to enter the second pressure relief tank for depressurization. Meanwhile, the first pressure relief tank continues to depressurize until it is full. The second pressure relief component not only provides pressure relief protection but also accelerates the depressurization speed to meet different operating conditions during hydrogen production, preventing excessive gas pressure that could lead to safety hazards. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the hydrogen storage tank under normal pressure conditions according to the present invention.

[0027] Figure 3 For the present invention Figure 2 An enlarged structural diagram of the second pressure relief component.

[0028] Figure 4 For the present invention Figure 2 Enlarged structural diagram of the first pressure relief component.

[0029] Figure 5 This is a schematic diagram of the external structure of the lifting seat of the present invention.

[0030] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the lifting seat of the present invention.

[0031] Figure 7 This is a schematic diagram of the internal cross-sectional structure of the present invention when the gas pressure in the hydrogen storage tank does not exceed the rated pressure by a small amount.

[0032] Figure 8 For the present invention Figure 7 An enlarged structural diagram showing the operation of the first and second pressure relief components.

[0033] Figure 9 This is a schematic diagram of the internal cross-sectional structure of the present invention when the gas pressure in the hydrogen storage tank exceeds the rated pressure significantly.

[0034] Figure 10 An enlarged structural schematic diagram showing the operation of the first and second pressure relief components of the present invention.

[0035] The numbers and letters in the diagram represent the names of the corresponding components:

[0036] 1. Intake pipe; 2. Hydrogen storage tank; 3. First pressure relief tank; 4. Second pressure relief tank; 5. First pressure relief component; 51. Receiving groove; 52. Through hole; 53. Second elastic component; 54. Door panel; 55. Positioning groove; 56. Protrusion; 57. Side protrusion; 58. Notch; 6. Pressure relief drive component; 61. Plug plate; 62. Sealing ring; 63. Sliding cavity; 64. First elastic component; 65. First transmission rod; 7. Transmission component; 71. Lifting rod; 72. Sliding rod; 73. Second transmission rod; 74. Transmission gear; 8. Second pressure relief component; 81. Lifting seat; 82. Guide cavity; 821. Intake cavity; 821a. Guide arc surface; 822. Gas delivery cavity; 822a. Receiving space; 822b. Outlet cavity; 83. Rotating rod; 84. Intake hole; 85. Blade. Detailed Implementation

[0037] 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.

[0038] See Figure 1-10 As shown, the present invention provides a hydrogen production device with an automatic pressure relief function, comprising: an inlet pipe 1, one end of which is connected to the hydrogen production device and the other end of which is connected to a hydrogen storage tank 2.

[0039] The bottom of the hydrogen storage tank 2 is equipped with a pressure relief drive 6. The pressure relief drive 6 moves up and down by the accumulation of hydrogen. When the pressure relief drive 6 is pressed down, it drives the first pressure relief component 5 to descend and connect to the first pressure relief tank 3, so that hydrogen is introduced to relieve pressure.

[0040] The hydrogen storage tank 2 is equipped with a transmission component 7. The transmission component 7 is driven by the pressure relief drive component 6 to extend the second pressure relief component 8 into the air intake pipe 1. The air intake pipe 1 uses airflow to accelerate the second pressure relief component 8 to transport hydrogen to the second pressure relief tank 4, thereby achieving diversion and pressure relief.

[0041] The hydrogen production device with automatic pressure relief function provided in this embodiment is used to divert and depressurize the hydrogen entering the hydrogen storage tank 2, and quickly depressurize it into the pressure relief tank. In this embodiment, terms related to direction and position are relative to the accompanying drawings. Specifically, the hydrogen production device (not shown in the drawings) is prior art and will not be described in detail here. During the hydrogen production process, excessive production may occur. In this case, the produced hydrogen enters the hydrogen storage tank 2 through the inlet pipe 1. As the hydrogen accumulates, its mass increases. When it reaches a certain level, the pressure relief drive 6 is compressed by the hydrogen, causing it to descend, which in turn causes the first pressure relief component 5 to descend as well. At this point, the first pressure relief component 5 opens, allowing the hydrogen to flow into the first pressure relief tank 3, thus releasing the pressure in the hydrogen storage tank 2 and providing a safety protection function. When the amount of hydrogen produced far exceeds the rated amount, the pressure relief drive 6 will descend to the bottom and drive the transmission component 7. Through the transmission component 7, the second pressure relief component 8 will extend into the intake pipe 1. At this time, the airflow generated by the hydrogen will drive the second pressure relief component 8, so that the hydrogen enters the second pressure relief tank 4 for pressure relief. Meanwhile, the first pressure relief tank 3 continues to depressurize until it is full. The second pressure relief component 8 can not only provide pressure relief protection, but also accelerate the pressure relief speed to meet different operating conditions when producing hydrogen, preventing excessive gas pressure from causing safety hazards.

[0042] Specifically, the pressure relief drive component 6 includes: a sliding cavity 63 is provided at the bottom of the hydrogen storage tank 2, a plug plate 61 is disposed in the sliding cavity 63, a sealing ring 62 is provided between the plug plate 61 and the inner wall of the sliding cavity 63, a first transmission rod 65 with a gear is vertically disposed at the bottom of the plug plate 61, a first elastic member 64 is sleeved on the first transmission rod 65 and pushes the top of the plug plate 61 to be flush with the bottom of the hydrogen storage tank 2. As the gas pressure inside the hydrogen storage tank 2 increases, the mass of hydrogen also gradually increases. At this time, the gas pressure causes the stopper plate 61 and the first transmission rod 65 to descend within the sliding cavity 63. The opening shape of the sliding cavity 63 is the same as that of the stopper plate 61, but the size of the stopper plate 61 is smaller than that of the opening of the sliding cavity 63, in order to leave a sliding gap. Therefore, a sealing ring 62 is provided between the stopper plate 61 and the side wall of the sliding cavity 63, that is, on the side end face of the stopper plate 61. The sealing ring 62 is also to prevent gas leakage due to the gap during normal use of the hydrogen storage tank 2, and also to improve the sealing and protection of the hydrogen storage tank 2. During the descent of the stopper plate 61, the first elastic element 64 is in a contracted state. The first elastic element 64 can be a spring or any component that can support the stopper plate 61 and has the function of contraction and reset. One end of the first elastic element 64 abuts against the bottom of the stopper plate 61, and the other end abuts against the bottom of the sliding cavity 63. When the gas pressure in the hydrogen storage tank 2 is within the normal range, the first elastic element 64 pushes the top of the stopper plate 61 to be flush with the bottom of the hydrogen storage tank 2, so that the stopper plate 61 is hidden and does not affect normal use.

[0043] When the gas pressure in the hydrogen storage tank 2 exceeds the rated range, it can be depressurized first through the first pressure relief tank 3. Specifically, the first pressure relief component 5 includes: a through hole 52 on the side wall of the sliding cavity 63, a receiving groove 51 at the bottom of the through hole 52, a second elastic element 53 in the receiving groove 51, a door plate 54 connected to the second elastic element 53, a protrusion 56 on the top of the door plate 54, and a positioning groove 55 in the through hole 52. The second elastic element 53 drives the door plate 54 to make the protrusion 56 engage with the positioning groove 55, so that the through hole 52 remains sealed. The door plate 54 is provided with a side protrusion 57. When the stopper plate 61 is pressed down, it drives the side protrusion 57 to lower the door plate 54, thus connecting the hydrogen storage tank 2 and the first pressure relief tank 3.

[0044] When the aforementioned stopper plate 61 moves downward, the bottom of the stopper plate 61 presses against the side protrusion 57, and drives the door plate 54 to move downward synchronously. The side protrusion 57 and the door plate 54 are integrally formed or welded, so that the first pressure relief tank 3, which was originally in a closed state, becomes an open state, allowing the gas in the hydrogen storage tank 2 to flow into the sliding cavity 63 and then into the first pressure relief tank for diversion. At this time, as the door plate 54 descends, the second elastic member 53 is in a contracted state.

[0045] In this design, a notch 58 is provided on the side wall of the sliding cavity 63 and is located on one side of the receiving groove 51. When the door panel 54 descends, it drives the side protrusion 57 to move into the notch 58, so that the opening of the first pressure relief tank 3 can be opened to the maximum. That is, as more hydrogen accumulates in the hydrogen storage tank 2, the opening size of the tank also increases. When the gas pressure in the hydrogen storage tank 2 returns to the normal range, the first elastic element 64 supports the stopper plate 61, causing the stopper plate 61 to slowly rise. Simultaneously, the side protrusion 57 and the door plate 54 close the opening of the tank. The second elastic element 53 also pushes up the door plate 54. At this time, when the door plate 54 is completely closed, the protrusion 56 on the door plate 54 inserts into the positioning groove 55 to form a seal. However, if the top of the door plate 54 and the inner wall of the through hole 52 are not sealed with a horizontal plane, this may cause leakage of the first pressure relief tank 3 or gas in the hydrogen storage tank 2 to flow into the first pressure relief tank 3, making the gas pressure stored in the hydrogen storage tank 2 inaccurate.

[0046] In addition, the transmission component 7 includes: a lifting rod 71 connected to the bottom of the lifting seat 81 inside the hydrogen storage tank 2, a sliding rod 72 connected to one end of the lifting rod 71, one end of the sliding rod 72 being mounted on the side wall of the sliding cavity 63, and a second transmission rod 73 with a gear on the sliding rod 72. The second transmission rod 73 and the first transmission rod 65 are respectively engaged with the transmission gear 74. As the first transmission rod 65 descends, it drives the second transmission rod 73 to rise through engagement with the transmission gear 74.

[0047] If the hydrogen in the hydrogen storage tank 2 exceeds the rated range by a large margin or if the instantaneously produced hydrogen pressure is very high, the descending speed of the stopper plate 61 will increase, causing it to descend to the bottom. At this time, as the stopper plate 61 descends, the first transmission rod 65 will also descend and engage with the transmission component 7. The gear on the first transmission rod 65 will mesh with the transmission gear 74, causing the transmission gear 74 to rotate. Meanwhile, the gear on the second transmission rod 73 will mesh with the transmission gear 74 and will rise as it rotates. The slide bar 72 connected to the second transmission rod 73 will also move upward, driving the lifting rod 71 to lift upward, so that the lifting seat 81 extends into the air intake pipe 1, allowing the hydrogen in the pipe to be directly diverted and depressurized at the source, ensuring that the gas pressure in the hydrogen storage tank 2 is stable. Therefore, when the gear part on the first transmission rod 65 meshes with the transmission gear 74, the second transmission rod 73 meshing with the transmission gear 74 will also move up and down accordingly, which can quickly respond to the diversion and depressurization due to the increase in gas pressure in the hydrogen storage tank 2.

[0048] In addition, when the first pressure relief tank 3 cannot meet the gas pressure relief needs of the hydrogen storage tank 2, pressure relief can be achieved through the second pressure relief component 8. Specifically, the second pressure relief component 8 includes: a lifting seat 81 disposed within the air intake pipe 1, and a guide cavity 82 disposed within the lifting seat 81. The guide cavity 82 is a C-shaped conductive structure facing the direction of hydrogen flow, with one opening connected to the air intake pipe 1 and the other opening connected to the second pressure relief tank 4. When the lifting seat 81 is in its initial position, both openings of the guide cavity 82 are closed. When the lifting rod 71 pushes the lifting seat 81 upward, the guide cavity 82 within the lifting seat 81 extends into the air intake pipe 1, intercepting the hydrogen flowing through the air intake pipe 1 and guiding it into the guide cavity 82. The gas is then introduced into the second pressure relief tank 4 through the guide cavity 82. The guide cavity 82 is a C-shaped conductive structure because the C-shaped structure can reduce the generation of turbulence and eddies in the gas flow, improving the stability of the guide cavity 82 during flow guidance. Of course, it can also play a good stabilizing role when the requirements for flow stability are high.

[0049] A gap is left between the lifting seat 81 and the intake pipe 1 when the lifting seat 81 extends into the intake pipe 1. This is so that when the gas pressure exceeds the rated pressure and the gas in the first pressure relief tank 3 is not yet full, the gas in the hydrogen storage tank 2 can still be diverted until the first pressure relief tank 3 is full, while another part of the gas flows into the second pressure relief tank 4, forming multiple diversions. Unlike setting multiple pressure relief structures in the hydrogen storage tank 2, where the gas is concentrated in the hydrogen storage tank 2 before pressure relief is achieved, the lifting seat 81 intercepts the gas at the source, which is also to improve the safety of the hydrogen storage tank 2.

[0050] The aforementioned guiding cavity 82 consists of an inlet cavity 821 and a delivery cavity 822. The upper inner wall of the inlet cavity 821 is provided with a guiding arc-shaped surface 821a, which is outwardly flared. The internal size of the delivery cavity 822 is larger than that of the inlet cavity 821. The guiding arc-shaped surface 821a is designed to effectively receive gas or better guide the gas flow in the desired direction, making the gas flow smoother, reducing energy loss, and improving flow efficiency. If the opening of the guiding cavity 82 were straight, the interception or diversion of gas would be reduced compared to a flared structure, resulting in a slower depressurization rate. The larger internal size of the delivery cavity 822 is necessary to ensure sufficient contact between the gas and the cavity, facilitating gas delivery.

[0051] In order to enable the gas to flow quickly into the second pressure relief tank 4 in the guide cavity 82, a receiving space 822a and an outlet cavity 822b are provided in the gas delivery cavity 822. A rotating rod 83 is provided in the receiving space 822a, and several blades 85 are distributed circumferentially on the rotating rod 83. The blades 85 rotate under the push of the airflow and drive the hydrogen to be delivered to the outlet cavity 822b. When the gas passes through the intake chamber 821, the airflow drives the blades 85 to rotate, causing the rotating rod 83 to also rotate. After one blade 85 rotates, due to inertia, multiple blades 85 can rapidly guide the gas from the intake chamber 821 to the outlet chamber 822b and then to the second pressure relief tank 4. Compared to not having the rotating rod 83 and blades 85, the rate at which the gas depressurizes and flows into the second pressure relief tank 4 is lower. As more gas is generated in the intake pipe 1 and the flow velocity increases, the blades 85 will rotate faster, and the pressure relief protection will become very rapid. The distance between the edge of the blade 85 and the junction of the intake chamber 821 and the air delivery chamber 822 is very small, just enough to avoid interference with the blade 85. This is to reduce the amount of gas flowing out of the gap into the second pressure relief tank 4 when it flows into the intake chamber 821, thereby increasing the conversion of the gas flow rate into the thrust on the blades 85 and reducing gas loss.

[0052] Furthermore, an air inlet 84 is provided on the opening side of the air inlet chamber 821 of the lifting seat 81. The air inlet 84 communicates with the accommodating space 822a, and the outlet of the air inlet 84 corresponds to one end face of the blade 85. After air enters, it pushes the blade 85 to accelerate its rotation. First, after the gas enters the air inlet chamber 821, it pushes the blade 85 to rotate. At the same time, the gas can also enter the air inlet 84, and an airflow that allows the blade 85 to rotate rapidly is applied, further accelerating the rotation of the blade 85, improving the gas depressurization flow rate and the kinetic energy conversion efficiency of the blade 85. Meanwhile, the air inlet 84 is located at a corresponding position above the opening of the guide chamber 82. When the gas pressure in the hydrogen storage tank 2 exceeds the rated amount, and the first transmission rod 65 has a short descent stroke, the lifting seat 81 rises, and the air inlet 84 first extends into the air inlet pipe 1, so that when the gas pressure in the hydrogen storage tank 2 is not so high, the gas can still be diverted and depressurized at the source.

[0053] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hydrogen production device with automatic pressure relief function, comprising: An air intake pipe (1) is connected at one end to the hydrogen production device and at the other end to a hydrogen storage tank (2); Its features are: The bottom of the hydrogen storage tank (2) is provided with a pressure relief drive (6). The pressure relief drive (6) moves up and down by relying on the accumulation of hydrogen. When the pressure relief drive (6) is pressed down, it drives the first pressure relief component (5) to descend and connect to the first pressure relief tank (3), so that hydrogen is introduced to relieve pressure. The hydrogen storage tank (2) is equipped with a transmission component (7). The transmission component (7) is driven by the pressure relief drive component (6) to make the second pressure relief component (8) extend into the air intake pipe (1). The air intake pipe (1) uses airflow to accelerate the second pressure relief component (8) to transport hydrogen to the second pressure relief tank (4) to achieve diversion and pressure relief. The second pressure relief component (8) includes: a lifting seat (81) disposed in the air intake pipe (1), the lifting seat (81) being provided with a flow guide cavity (82), the flow guide cavity (82) being a C-shaped conductive structure facing the hydrogen flow direction, and one opening being connected to the air intake pipe (1), and the other opening being connected to the second pressure relief tank (4), and when the lifting seat (81) is in the initial position, the two openings of the flow guide cavity (82) are in a sealed state; When the lifting seat (81) extends into the air intake pipe (1), there is a gap between it and the air intake pipe (1); The flow guiding cavity (82) is composed of an air inlet cavity (821) and an air delivery cavity (822). The upper inner wall of the air inlet cavity (821) is provided with a flow guiding arc surface (821a) and is outwardly expanding. The internal size of the air delivery cavity (822) is larger than the internal size of the air inlet cavity (821). The gas delivery chamber (822) is provided with a receiving space (822a) and a gas outlet chamber (822b). The receiving space (822a) is provided with a rotating rod (83). Several blades (85) are distributed circumferentially on the rotating rod (83). The blades (85) are rotated by the airflow and drive hydrogen to be delivered to the gas outlet chamber (822b). An air inlet (84) is provided on the opening side of the air inlet chamber (821) of the lifting seat (81). The air inlet (84) is connected to the accommodating space (822a). The air outlet of the air inlet (84) corresponds to one end face of the blade (85). After air is introduced, it pushes the blade (85) to accelerate rotation.

2. The hydrogen production device with automatic pressure relief function according to claim 1, characterized in that, The pressure relief drive (6) includes: The bottom of the hydrogen storage tank (2) is provided with a sliding cavity (63), and a stopper plate (61) is provided in the sliding cavity (63). A sealing ring (62) is provided between the stopper plate (61) and the inner wall of the sliding cavity (63). A first transmission rod (65) with a gear is vertically provided at the bottom of the stopper plate (61). A first elastic element (64) is sleeved on the first transmission rod (65) and pushes the top of the stopper plate (61) to be flush with the bottom of the hydrogen storage tank (2).

3. The hydrogen production device with automatic pressure relief function according to claim 2, characterized in that, The first pressure relief component (5) includes: A through hole (52) is provided on the side wall of the sliding cavity (63), and a receiving groove (51) is provided at the bottom of the through hole (52). A second elastic element (53) is provided in the receiving groove (51), and a door panel (54) is connected to the second elastic element (53). A protrusion (56) is provided on the top of the door panel (54), and a positioning groove (55) is provided in the through hole (52). The second elastic element (53) drives the door panel (54) to make the protrusion (56) cooperate with the positioning groove (55) so that the through hole (52) remains sealed. The door panel (54) is provided with a side protrusion (57). The plug plate (61) presses down and drives the side protrusion (57) to lower the door panel (54), thus connecting the hydrogen storage tank (2) with the first pressure relief tank (3).

4. The hydrogen production device with automatic pressure relief function according to claim 3, characterized in that, The sliding cavity (63) has a notch (58) on its side wall, which is located on one side of the receiving groove (51). When the door panel (54) descends, it causes the side protrusion (57) to move to the notch (58).

5. The hydrogen production device with automatic pressure relief function according to claim 2, characterized in that, The transmission component (7) includes: The hydrogen storage tank (2) is provided with a lifting rod (71) connected to the bottom of the lifting seat (81). One end of the lifting rod (71) is connected to a sliding rod (72). One end of the sliding rod (72) is mounted on the side wall of the sliding cavity (63). A second transmission rod (73) with a gear is provided on the sliding rod (72). The second transmission rod (73) and the first transmission rod (65) are respectively engaged with the transmission gear (74). As the first transmission rod (65) descends, it drives the second transmission rod (73) to rise through engagement with the transmission gear (74).

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