Carbon-carbon gas cylinder hydrogen storage structure and manufacturing method

Abstract

The application relates to the technical field of gas transportation, and discloses a carbon-carbon gas cylinder hydrogen storage structure, which has the technical scheme as follows: the carbon-carbon gas cylinder hydrogen storage structure comprises a gas cylinder, a gas cylinder protection structure, a supporting part, a protection valve and a gas pressure gauge; the gas cylinder protection structure is arranged outside the gas cylinder and is used for protecting the outer wall structure of the gas cylinder and balancing the internal gas pressure of the gas cylinder; the supporting part is arranged on the gas cylinder protection structure and is used for supporting the gas cylinder protection structure; the protection valve is arranged at the inflation position of the gas cylinder and is used for stably protecting the internal gas pressure of the gas cylinder; and the gas pressure gauge is installed on the gas cylinder and is used for detecting the internal gas pressure of the gas cylinder; an annular felt made of carbon-carbon composite material is arranged in the hydrogen storage tank, is implanted in the process of manufacturing the rotational plastic inner container, and the carbon-carbon composite annular felt has honeycomb-shaped apertures, can fix and store hydrogen, and reduces the self pressure of the gas cylinder.

Description

Technical Field

[0001] This invention relates to the field of gas transportation technology, and more specifically to a carbon-carbon gas cylinder hydrogen storage structure and manufacturing method. Background Technology

[0002] Gas storage technology involves introducing gas into a container and then transporting the container. To store more gas, the container is pressurized to allow for more gas to be added. However, during transportation, if there is a collision or hot weather, the internal air pressure will become unbalanced, which can easily affect transportation and even pose a risk of explosion. Existing technologies do not allow for active pressure regulation while simultaneously preserving the gas.

[0003] The existing container manufacturing process does not facilitate targeted adjustments to the container materials, nor does it facilitate the improvement of the container's own strength, reduction of internal pressure, and mitigation of pressure risks through the manufacturing method. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the primary objective of this invention is to provide a carbon-carbon gas cylinder hydrogen storage structure. This structure uses a pressure gauge to monitor the gas pressure inside the cylinder in real time. When pressure fluctuations occur due to impacts or weather conditions, a portion of the gas flows into the cylinder's protective structure, preventing excessive internal pressure. In the event of damage to the protective structure, it can also actively release some gas while preserving the majority of the gas, stabilizing pressure and preventing excessive gas loss. The gas's reaction force against the protective valve provides self-protection, preventing gas from leaking out of the valve.

[0005] The second objective of this invention is to provide a method for manufacturing a carbon-carbon gas cylinder hydrogen storage structure. This method involves embedding a carbon-carbon composite annular felt inside the hydrogen storage tank during the rotational molding process. The carbon-carbon composite annular felt itself has honeycomb-like pores, which can fix and store hydrogen, reducing the internal pressure of the cylinder and mitigating pressure risks. The inner liner of the hydrogen storage tank is wrapped with carbon fiber and glass fiber for pressure resistance. The inner liner only serves as an airtight container, thus avoiding the problem of reducing the internal pressure of the cylinder and mitigating pressure risks.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a carbon-carbon gas cylinder hydrogen storage structure, comprising a gas cylinder, a gas cylinder protection structure, a support, a protective valve, and a pressure gauge; the gas cylinder protection structure is disposed outside the gas cylinder to protect the outer wall structure of the gas cylinder and balance the internal gas pressure of the gas cylinder; the support is disposed on the gas cylinder protection structure to support the gas cylinder protection structure; the protective valve is disposed at the filling position of the gas cylinder to stabilize and protect the internal gas pressure of the gas cylinder; the pressure gauge is installed on the gas cylinder to detect the internal gas pressure of the gas cylinder. The pressure gauge monitors the gas pressure inside the gas cylinder in real time. When the gas pressure fluctuates due to impact or weather conditions, some of the gas inside the gas cylinder will flow into the gas cylinder protection structure, thereby avoiding the problem of excessive internal pressure. When the gas cylinder protection structure is damaged, it can also actively release some gas, retaining most of the gas, stabilizing the pressure while preventing excessive gas loss. The gas self-protection is achieved by utilizing the reaction force of the gas on the protective valve, preventing gas from flowing out of the valve port.

[0007] As a further improvement of the present invention, the gas cylinder protection structure includes at least one support ring, a flow port, an outer liner, and a storage cavity; the outer liner is fixedly sleeved on the outside of the gas cylinder, the outer ring of the support ring is fixedly connected to the inner wall of the outer liner, and the inner ring is fixedly connected to the outside of the gas cylinder. The support ring isolates the inside of the outer liner to form a storage cavity, and the flow port is opened on the support ring. The outer liner wraps around the gas cylinder, thereby providing protection. The support ring enhances the internal strength, and the flow port ensures that all internal locations are connected, thus maintaining gas pressure.

[0008] As a further improvement of the present invention, the support includes a pair of support legs, a working groove, a connecting pipe, and a pair of solenoid valves; the pair of support legs are fixedly connected to the outer liner, the working groove is opened in one of the support legs, one end of the connecting pipe is connected to the gas cylinder, and the other end is connected to the storage chamber, and the pair of solenoid valves are respectively fixedly connected to the two ports of the connecting pipe. The support legs ensure overall stability and convenience while connecting the outer liner and the gas cylinder, and the solenoid valves are used to control the gas discharge to protect the internal gas pressure of the gas cylinder, thereby making it more stable and avoiding the problem of gas leakage.

[0009] As a further improvement of the present invention, the protective valve includes a housing, an inflation chamber, an inflation head, a fixing block, at least one sealing block, at least one air port, a sensor, a pressure spring, a downward pressure spring, a pressure rod, and at least one set of lever arm adjustment structures; the housing is threaded, and one end of the housing has an opening; the inflation chamber is opened inside the housing, and the opening communicates with the inflation chamber; the fixing block is fixedly installed on the bottom wall of the inflation chamber; the inflation head is fixedly connected to the pressure rod; the pressure rod is slidably installed inside the fixing block via a pressure spring; the downward pressure spring is sleeved on the pressure rod, with one end abutting against the inflation head and the other end abutting against the fixing block; the air port is opened at the end of the housing away from the opening, and... The cylinder is connected to the inflation chamber. The sealing block is located inside the air inlet, and the sensor is located inside the fixed block and connected to the pressure spring. The lever arm adjustment structure is located inside the inflation chamber to control the sealing block to detach from the air inlet. When inflation occurs, the inflation head is pressed down, causing the pressure rod to press down the pressure spring. At the same time, the hinge rod is driven to compress the return spring, thereby rotating the hinge rod to compress the compression spring and lift the sealing block, allowing gas to enter the gas cylinder. After inflation is complete, the gas will push against the sealing block, thereby driving the hinge rod to rotate. However, the force will not be transmitted to the inflation head. Even if gas flows into the outer shell, it will tighten the gap between the inflation head and the outer shell, thus ensuring the gas seal.

[0010] As a further improvement of the present invention, the lever arm adjustment structure includes a fixed plate, a hinge rod, a return spring, a limiting rod, and a compression spring; the limiting rod is fixedly connected inside the inflation chamber and rotatably connected to the hinge rod, with the connection position eccentrically set on the hinge rod near one end of the sealing block; one end of the hinge rod is fixedly connected to the compression spring; the fixed plate is fixedly connected to the side wall of the inflation chamber and fixedly connected to the other end of the compression spring; one end of the return spring is fixedly connected to the hinge rod, and the other end is fixedly connected to the fixed block; the sealing block is hinged to the hinge rod, and the hinge position of the hinge rod is close to the position of the sealing block, so that the force required when the sealing block is pushed by the gas will be greater; at the same time, setting the strength of the adjustment return spring to be greater than the strength of the compression spring can also ensure that the air pressure is difficult to easily flow out from the air port.

[0011] As a further improvement of the present invention, the gas cylinder includes an inner liner, a connector, and a valve seat at the cylinder mouth; the connector is located at one end of the inner liner for connection with a transport machine, and the valve seat at the cylinder mouth is located at the other end of the inner liner for threaded connection with the outer shell.

[0012] As a further improvement of the present invention, the inner liner includes an annular felt layer, a carbon fiber layer and a glass fiber layer, wherein the annular felt layer is a layer in contact with the gas, and the carbon fiber layer and the glass fiber layer are mixed and wound around the outer layer of the annular felt layer.

[0013] As a further improvement of the present invention, the inflation head is I-shaped and has a protrusion at the top that matches the opening of the outer shell.

[0014] As a further improvement of the present invention, a method for manufacturing a carbon-carbon gas cylinder hydrogen storage structure includes the following steps:

[0015] Step 1: Place HDPE in the corresponding rotational molding mold, fix the gas cylinder base in the rotational molding fixture, fix the clamp in the rotational molding fixture, and produce the HDPE inner liner through rotational molding;

[0016] Step 2: Install the sealing ring and two nylon baffles into the bottle neck valve seat fixing slot, and embed the bottle neck valve seat into the HDPE inner liner by pressing and aligning.

[0017] Step 3: Embed the PTFE gasket into the corresponding slot of the valve seat at the gas cylinder opening;

[0018] Step 4: Install the sealing ring into the corresponding slot on the protective valve;

[0019] Step 5: Secure the protective valve into the bottle neck valve seat using the threaded locking mechanism;

[0020] Step 6: Place the entire HDPE inner liner into the winding machine and wind carbon fiber and glass fiber using the set winding process;

[0021] Step 7: Place the gas cylinder into a curing oven to cure it, forming the finished product.

[0022] The beneficial effects of this invention are:

[0023] (1) The present invention incorporates a carbon-carbon composite ring felt inside the hydrogen storage tank during the rotomolding process. The carbon-carbon composite ring felt itself has a honeycomb pore size, which can fix and store hydrogen, reduce the pressure inside the tank, and reduce the pressure risk. The inner liner of the hydrogen storage tank is wrapped with carbon fiber and glass fiber for pressure support. The inner liner only serves as an airtight container, thereby avoiding the problem of reducing the pressure inside the tank and reducing the pressure risk.

[0024] (2) The present invention uses a barometer to detect the gas pressure in the gas cylinder in real time. When the gas pressure fluctuates due to impact or weather, some of the gas in the gas cylinder will flow into the gas cylinder protection structure, thereby avoiding the problem of excessive internal gas pressure. When the gas cylinder protection structure is damaged, it can also actively release some gas, retain most of the gas, stabilize the pressure and protect the gas from excessive loss. The gas self-protection is completed by using the reaction force of the gas on the protection valve to prevent gas from flowing out of the valve port.

[0025] (3) This invention uses an outer liner to wrap the gas cylinder, thereby providing protection. The support ring is used to improve the internal strength, and the flow port ensures that all internal positions are connected to maintain the gas pressure. The support legs ensure overall stability and convenience while connecting the outer liner and the gas cylinder. The solenoid valve is used to control the gas discharge and protect the internal gas pressure of the gas cylinder, thereby making it more stable and avoiding gas leakage.

[0026] (4) When the present invention is filled with gas, the pressure head is pressed down, causing the pressure rod to press down the pressure spring. At the same time, the hinge rod is driven to compress the return spring, thereby rotating the hinge rod to compress the compression spring and lifting the sealing block, so that the gas can enter the gas cylinder. When the filling is completed, the gas will push against the sealing block, thereby driving the hinge rod to rotate. However, the force will not be transmitted to the pressure head. Even if gas flows into the outer shell, it will tighten the gap between the pressure head and the outer shell, thereby ensuring the gas sealing.

[0027] (5) The present invention moves the hinge position of the hinge rod closer to the position of the sealing block, so that the sealing block needs more force when it is pushed by the gas. At the same time, the strength of the adjustment and reset spring is set to be greater than that of the compression spring, which can also ensure that the gas pressure is difficult to flow out from the gas port easily. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0029] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0030] Figure 3 This is the present invention. Figure 1 A schematic diagram of the structure at the gas cylinder location;

[0031] Figure 4 This is the present invention. Figure 3 A schematic diagram of the cross-sectional structure;

[0032] Figure 5 This is a schematic diagram of the main structure of the protective valve of the present invention;

[0033] Figure 6 This is the present invention. Figure 5 A schematic diagram of the cross-sectional structure;

[0034] Figure 7 This is the present invention. Figure 6 Enlarged structural diagram of the fixed block in the middle;

[0035] Figure 8 This is the present invention. Figure 1 A schematic diagram of the cross-sectional structure.

[0036] Reference numerals: 1. Gas cylinder; 11. Inner liner; 12. Connector; 2. Gas cylinder protection structure; 21. Support ring; 211. Flow port; 22. Outer liner; 23. Storage chamber; 3. Bottle neck valve seat; 4. Support part; 41. Support leg; 42. Working groove; 43. Connecting pipe; 44. Solenoid valve; 5. Protective valve; 51. Outer shell; 52. Inflation chamber; 53. Inflation head; 54. Fixing block; 55. Sealing block; 551. Gas port; 56. Fixing plate; 6. Sensor; 61. Pressure spring; 62. Hinge rod; 63. Return spring; 64. Downward pressure spring; 65. Pressure rod; 66. Limiting rod; 67. Compression spring. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0038] Reference Figure 1-8 As shown, this embodiment of a carbon-carbon gas cylinder hydrogen storage structure includes a gas cylinder 1, a protective structure for the gas cylinder 1, a support part 4, a protective valve 5, and a pressure gauge. The protective structure for the gas cylinder 1 is located outside the gas cylinder 1 to protect the outer wall structure of the gas cylinder 1 and balance the internal gas pressure of the gas cylinder 1. The support part 4 is located on the protective structure for supporting the protective structure. The protective valve 5 is located at the filling position of the gas cylinder 1 to stabilize and protect the internal gas pressure of the gas cylinder 1. The pressure gauge is installed on the gas cylinder 1 to detect the internal gas pressure. The pressure gauge detects the gas pressure inside the gas cylinder 1 in real time. When the gas pressure fluctuates due to impact or weather, some of the gas inside the gas cylinder 1 will flow into the protective structure, thereby avoiding the problem of excessive internal pressure. When the protective structure of the gas cylinder 1 is damaged, it can also actively release some gas, retain most of the gas, stabilize the pressure, and prevent excessive gas loss. The gas self-protection is achieved by using the reaction force of the gas on the protective valve 5 to prevent gas from flowing out of the valve port.

[0039] like Figure 1-8As shown, the protective structure of the gas cylinder 1 includes at least one support ring 21, a flow port 211, an outer liner 22, and a storage cavity 23. The outer liner 22 is fixedly sleeved on the outside of the gas cylinder 1. The outer ring of the support ring 21 is fixedly connected to the inner wall of the outer liner 22, and the inner ring is fixedly connected to the outside of the gas cylinder 1. The support ring 21 isolates the inside of the outer liner 22 to form the storage cavity 23. The flow port 211 is opened on the support ring 21. The outer liner 22 wraps around the gas cylinder 1, thereby providing protection. The support ring 21 enhances the internal strength, and the flow port 211 ensures that all internal positions are connected, thus maintaining gas pressure.

[0040] like Figure 1-8 As shown, the support part 4 includes a pair of support legs 41, a working groove 42, a connecting pipe 43, and a pair of solenoid valves 44. The pair of support legs 41 are fixedly connected to the outer liner 22. The working groove 42 is opened in one of the support legs 41. One end of the connecting pipe 43 is connected to the gas cylinder 1, and the other end is connected to the storage chamber 23. The pair of solenoid valves 44 are respectively fixedly connected to the two ports of the connecting pipe 43. The support legs 41 ensure the overall stability and convenience while connecting the outer liner 22 and the gas cylinder 1. The solenoid valves 44 are used to control the gas discharge and protect the internal gas pressure of the gas cylinder 1, thereby making it more stable and avoiding the problem of gas leakage.

[0041] like Figure 1-8As shown, the protective valve 5 includes a housing 51, an inflation chamber 52, an inflation head 53, a fixing block 54, at least one sealing block 55, at least one air port 551, a sensor 6, a pressure spring 61, a downward pressure spring 64, a pressure rod 65, and at least one set of lever arm adjustment structures. The housing 51 has threads, and one end of the housing 51 has an opening. The inflation chamber 52 is located inside the housing 51, and the opening communicates with the inflation chamber 52. The fixing block 54 is fixedly installed on the bottom wall of the inflation chamber 52. The inflation head 53 is fixedly connected to the pressure rod 65. The pressure rod 65 is slidably installed inside the fixing block 54 via the pressure spring 61. The downward pressure spring 64 is sleeved on the pressure rod 65, with one end abutting against the inflation head 53 and the other end abutting against the fixing block 54. The air port 551 is located at the end of the housing 51 furthest from the opening. It is connected to the inflation chamber 52. The sealing block 55 is set inside the air port 551. The sensor 6 is set inside the fixing block 54 and connected to the pressure spring 61. The lever arm adjustment structure is set inside the inflation chamber 52 to control the sealing block 55 to disengage from the air port 551. When inflation, the inflation head 53 is pressed down, causing the pressure rod 65 to press down the pressure spring 61. At the same time, the hinge rod 62 is driven to compress the reset spring 63, thereby rotating the hinge rod 62 to compress the compression spring 67 and lift the sealing block 55, so that gas can enter the gas cylinder 1. After inflation is completed, the gas will push against the sealing block 55, thereby driving the hinge rod 62 to rotate, but the force will not be transmitted to the inflation head 53. Even if gas flows into the outer shell 51, it will tighten the gap between the inflation head 53 and the outer shell 51, thereby ensuring the gas sealing.

[0042] like Figure 1-8 As shown, the lever arm adjustment structure includes a fixed plate 56, a hinge rod 62, a return spring 63, a limiting rod 66, and a compression spring 67. The limiting rod 66 is fixedly connected inside the inflation chamber 52 and rotatably connected to the hinge rod 62. The connection position is eccentrically set on the hinge rod 62 near one end of the sealing block 55. The hinge rod 62 is fixedly connected to one end of the compression spring 67. The fixed plate 56 is fixedly connected to the side wall of the inflation chamber 52 and fixedly connected to the other end of the compression spring 67. One end of the return spring 63 is fixedly connected to the hinge rod 62, and the other end is fixedly connected to the fixed block 54. The sealing block 55 is hinged to the hinge rod 62. By adjusting the hinge position of the hinge rod 62 towards the sealing block 55, the force required when the sealing block 55 is pushed by the gas will be greater. At the same time, setting the strength of the adjustment return spring 63 to be greater than the strength of the compression spring 67 can also ensure that the gas pressure is difficult to easily flow out from the air port 551.

[0043] like Figure 1-8 As shown, the gas cylinder 1 includes an inner liner 11, a connector 12, and a valve seat 3 at the cylinder mouth; the connector 12 is located at one end of the inner liner 11 and is used to connect with the transport machine, and the valve seat 3 is located at the other end of the inner liner 11 and is used to connect with the outer shell 51 by thread.

[0044] like Figure 1-8 As shown, the inner liner 11 includes an annular felt layer, a carbon fiber layer, and a glass fiber layer. The annular felt layer is a layer that comes into contact with the gas, and the carbon fiber layer and the glass fiber layer are mixed and wound around the outer layer of the annular felt layer.

[0045] like Figure 1-8 As shown, the inflation head 53 is I-shaped, and its top end has a protrusion that matches the opening of the outer shell 51.

[0046] like Figure 1-8 As shown, a method for manufacturing a carbon-carbon gas cylinder 1 hydrogen storage structure includes the following steps:

[0047] Step 1: Place HDPE in the corresponding rotational molding mold, fix the base of gas cylinder 1 in the rotational molding fixture, fix the clamp in the rotational molding fixture, and produce HDPE inner liner 11 by rotational molding.

[0048] Step 2: Install the sealing ring and two nylon baffles into the fixing slot of the bottle mouth valve seat 3, and embed the bottle mouth valve seat 3 into the HDPE inner liner 11 by pressing and aligning.

[0049] Step 3: Embed the PTFE gasket into the corresponding slot of valve seat 3 at the mouth of gas cylinder 1;

[0050] Step 4: Install the sealing ring into the corresponding slot of the protective valve 5;

[0051] Step 5: Lock the protective valve 5 into the bottle neck valve seat 3 using a threaded locking method;

[0052] Step 6: Place the entire HDPE inner liner 11 into the winding machine and wind carbon fiber and glass fiber using the set winding process;

[0053] Step 7: Place gas cylinder 1 into a curing oven for curing to form the finished product.

[0054] Working principle: When using, such as Figure 1-8 As shown, when inflating, pressing down the inflation head 53 causes the pressure rod 65 to press down the pressure spring 61. At the same time, the hinge rod 62 is driven to compress the return spring 63, thereby rotating the hinge rod 62 to compress the compression spring 67 and lift the sealing block 55, allowing gas to enter the gas cylinder. After inflation is complete, the gas will push against the sealing block 55, thereby driving the hinge rod 62 to rotate, but the force will not be transmitted to the inflation head 53. Even if gas flows into the outer shell 51, it will tighten the gap between the inflation head 53 and the outer shell 51, thereby ensuring the gas seal. When the gas pressure fluctuates, the two solenoid valves 44 are controlled to complete the gas transfer, and the gas is stored from the gas cylinder 1 into the outer liner 22.

[0055] During hydrogen filling, the hydrogen is compressed, pressing the cylinder neck clamp tightly against the valve seat. When releasing hydrogen, the clamp effectively prevents the HDPE at the cylinder neck from loosening excessively. This effectively protects the airtightness of the hydrogen storage cylinder.

[0056] The carbon-carbon composite ring felt is formed by needle-punching short carbon fibers. PAN carbon fibers are etched with H2 to form porous carbon fiber graphene. Then, carbon nanotubes are deposited into the pore walls using a flotation vapor deposition method. The carbon-carbon composite ring felt is then implanted into the inner liner of a gas cylinder. When pressurized with hydrogen, the hydrogen is fixed within the carbon-carbon composite ring felt, reducing the original pressure of the gas cylinder and simultaneously increasing the hydrogen density per unit area.

[0057] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A carbon-carbon gas cylinder hydrogen storage structure, characterized in that: The gas cylinder (1), the gas cylinder protection structure (2), the supporting part (4), the protection valve (5) and the gas pressure gauge are included. The gas cylinder protection structure (2) is arranged outside the gas cylinder (1) and is used for protecting the outer wall structure of the gas cylinder (1) and balancing the internal gas pressure of the gas cylinder (1), the supporting part (4) is arranged on the gas cylinder protection structure (2) and is used for supporting the gas cylinder protection structure (2), the protection valve (5) is arranged at the inflation position of the gas cylinder (1) and is used for stabilizing the internal gas pressure of the gas cylinder (1), and the gas pressure gauge is arranged on the gas cylinder (1) and is used for detecting the internal gas pressure of the gas cylinder (1). The protection valve (5) comprises a shell (51), an inflation cavity (52), an inflation pressure head (53), a fixed block (54), at least one sealing block (55), at least one gas port (551), a sensor (6), a pressure spring (61), a downward pressing spring (64), a pressure rod (65) and at least one set of force arm adjusting structure. The shell (51) is provided with threads, one end of the shell (51) is provided with an opening, the inflation cavity (52) is arranged in the shell (51), the opening is communicated with the inflation cavity (52), the fixed block (54) is fixedly arranged on the bottom wall of the inflation cavity (52), the inflation pressure head (53) is fixedly connected with the pressure rod (65), the pressure rod (65) is slidably arranged in the fixed block (54) through the pressure spring (61), the downward pressing spring (64) is sleeved on the pressure rod (65), one end of the downward pressing spring (64) abuts against the inflation pressure head (53), the other end of the downward pressing spring (64) abuts against the fixed block (54), the gas port (551) is arranged at the end of the shell (51) away from the opening and is communicated with the inflation cavity (52), the sealing block (55) is arranged in the gas port (551), the sensor (6) is arranged in the fixed block (54) and is connected with the pressure spring (61), and the force arm adjusting structure is arranged in the inflation cavity (52) and is used for controlling the sealing block (55) to be separated from the gas port (551). The force arm adjusting structure comprises a fixed plate (56), a hinged rod (62), a reset spring (63), a limiting rod (66) and a compression spring (67). The limiting rod (66) is fixedly connected in the inflation cavity (52) and is rotationally connected with the hinged rod (62), the connecting position is eccentrically arranged at one end of the hinged rod (62) close to the sealing block (55), the hinged rod (62) is fixedly connected with one end of the compression spring (67), the fixed plate (56) is fixedly connected on the side wall of the inflation cavity (52) and is fixedly connected with the other end of the compression spring (67), one end of the reset spring (63) is fixedly connected with the hinged rod (62), the other end of the reset spring (63) is fixedly connected with the fixed block (54), and the sealing block (55) is hingedly connected with the hinged rod (62).

2. The carbon-carbon gas cylinder hydrogen storage structure according to claim 1, characterized in that: The gas cylinder protection structure (2) comprises at least one supporting ring (21), a flow-through port (211), an outer shell (22) and a storage cavity (23). The outer shell (22) is fixedly sleeved outside the gas cylinder (1), the outer ring of the supporting ring (21) is fixedly connected to the inner wall of the outer shell (22), the inner ring is fixedly connected outside the gas cylinder (1), and the supporting ring (21) separates the inside of the outer shell (22) into the storage cavity (23), and the flow-through opening (211) is arranged on the supporting ring (21).

3. The carbon-carbon gas cylinder hydrogen storage structure according to claim 2, characterized in that: The supporting part (4) comprises a pair of supporting legs (41), a working groove (42), a connecting pipe (43) and a pair of electromagnetic valves (44); The pair of supporting legs (41) are fixedly connected to the outer shell (22), the working groove (42) is arranged in one of the supporting legs (41), one end of the connecting pipe (43) is communicated with the gas cylinder (1), the other end is communicated with the storage cavity (23), and the pair of electromagnetic valves (44) are fixedly connected in the two pipe openings of the connecting pipe (43).

4. The carbon-carbon gas cylinder hydrogen storage structure according to claim 1, characterized in that: The gas cylinder (1) comprises an inner shell (11), a connecting head (12) and a bottle mouth valve seat (3); The connecting head (12) is arranged at one end of the inner shell (11) and is used for being connected with a machine for transportation, and the bottle mouth valve seat (3) is arranged at the other end of the inner shell (11) and is used for being screwed with the shell (51).

5. The carbon-carbon gas cylinder hydrogen storage structure according to claim 4, characterized in that: The inner shell (11) comprises a ring-shaped felt layer, a carbon fiber layer and a glass fiber layer, the ring-shaped felt layer is a layer for contacting gas, and the carbon fiber layer and the glass fiber layer are mixedly wound outside the ring-shaped felt layer.

6. The carbon-carbon gas cylinder hydrogen storage structure according to claim 1, wherein: The inflation pressure head (53) is in the shape of an I-beam, and a protrusion matching the opening of the shell (51) is arranged at the top end.

7. A method for manufacturing a carbon-carbon gas cylinder hydrogen storage structure, characterized in that: The carbon-carbon gas cylinder hydrogen storage structure according to any one of claims 1-6 comprises the following steps: Step 1: place HDPE in the corresponding rotational molding mold, fix the gas cylinder base in the rotational molding clamp, fix the clamp in the rotational molding clamp, and produce the HDPE inner shell (11) by rotational molding; Step 2: assemble the sealing ring and the two nylon stop pieces in the bottle mouth valve seat (3) fixed clamping groove, and embed the bottle mouth valve seat (3) into the HDPE inner shell (11) by pressing alignment; Step 3: embed the polytetrafluoroethylene gasket into the corresponding clamping groove of the gas cylinder bottle mouth valve seat (3); Step 4: assemble the sealing ring in the corresponding groove of the protection valve (5); Step 5: lock the protection valve (5) into the bottle mouth valve seat (3) by screwing; Step 6: place the entire HDPE inner shell (11) into the winding machine, and wind the carbon fiber and the glass fiber by the set winding process; Step 7: place the gas cylinder into the curing oven for curing to form a finished product.

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