High-capacity stable high-pressure hydrogen storage tank

Abstract

The utility model relates to the field of hydrogen storage tanks, and discloses a high-capacity stable high-pressure hydrogen storage tank which comprises a high-pressure hydrogen storage tank body, an outer protective tank body is arranged on the outer surface of the high-pressure hydrogen storage tank body, and circular connecting covers are arranged at the left end and the right end of the outer protective tank body respectively. The outer protective tank body and the circular connecting cover are both internally provided with anti-impact buffering pads, the outer surface of the outer protective tank body is provided with a ventilation cooling mechanism, and the left end and the right end of the outer protective tank body are each fixedly provided with a first connecting disc. According to the high-pressure hydrogen storage tank, the outer protective tank body and the circular connecting cover are arranged, a multi-layer buffer structure can be formed, impact force can be absorbed layer by layer, the high-pressure hydrogen storage tank is protected in an all-around mode, safety and stability of the high-pressure hydrogen storage tank are improved, the outer protective tank body and the circular connecting cover can be detached by screwing off the fixing bolts and the nuts during overhaul and maintenance, operation is easy and convenient, and the high-pressure hydrogen storage tank can be checked and maintained conveniently.

Description

Technical Field

[0001] This utility model belongs to the field of hydrogen storage tank technology, specifically a high-capacity stable high-pressure hydrogen storage tank. Background Technology

[0002] High-pressure hydrogen storage tanks are devices that achieve high-density energy storage by compressing hydrogen gas under high pressure (typically 35-100 MPa). Their core structure consists of a hydrogen-resistant inner liner (such as aluminum alloy or polymer materials) and a carbon fiber reinforcement layer, combining lightweight and high strength characteristics. The tank body achieves high hydrogen storage density (mass hydrogen storage rate ≥6.0 wt%, volume density ≥40 g / L) through optimized material combinations (such as nanocrystalline alloys to suppress hydrogen embrittlement and graphene coatings to reduce permeation) and winding processes (spiral-circular fiber layout). It also integrates an intelligent sensing system (fiber optic monitoring of strain and hydrogen concentration) and multiple safety protections, and is mainly used in hydrogen fuel cell vehicles, hydrogen refueling stations, and the aerospace field.

[0003] A Chinese patent with publication number CN214663668U discloses a highly stable metal hydrogen storage tank, including a hydrogen storage tank body, an outer tank, an inner tank, and a gas guide pipe. Several shock-absorbing structures are installed on the adjacent surfaces of the inner tank and the outer tank. This invention improves the heat exchange performance of the hydrogen storage alloy powder bed by incorporating the inner tank, outer tank, and filter plates, and by fixing several filter plates on the gas guide pipe within the inner tank. This ensures rapid hydrogen absorption and desorption in the metal hydride hydrogen storage tank, prevents localized aggregation of the hydrogen storage alloy powder within the tank, ensures uniform distribution of the powder, prevents excessive deformation of the tank due to excessive stress, and guarantees safety and lifespan.

[0004] Existing related technologies often have the following drawbacks: the device protects the inner tank through the outer tank and shock-absorbing structure in order to reduce the impact of external impacts on the inside of the hydrogen storage tank;

[0005] However, the outer tank of this device adopts a one-piece molded structure, which makes disassembly difficult once damage occurs or when the inner tank needs to be inspected and maintained. Secondly, the connecting rod in the shock absorption structure is in direct contact with the inner tank. When the outer tank is hit, the impact force may still be transmitted to the inner tank, resulting in poor overall buffering effect and the inner tank is still at risk of being damaged. Therefore, this utility model provides a high-capacity stable high-pressure hydrogen storage tank. Utility Model Content

[0006] The purpose of this application is to provide a high-capacity, stable, high-pressure hydrogen storage tank in order to solve the problems mentioned above.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a high-capacity stable high-pressure hydrogen storage tank, comprising a high-pressure hydrogen storage tank, an outer protective tank body provided on the outer surface of the high-pressure hydrogen storage tank, circular connecting covers provided at the left and right ends of the outer protective tank body, impact-resistant buffer pads provided inside the outer protective tank body and the circular connecting covers, a ventilation and cooling mechanism provided on the outer surface of the outer protective tank body, connecting disc one fixedly installed at the left and right ends of the outer protective tank body, and connecting disc two fixedly installed at the end of the circular connecting cover near the outer protective tank body, and multiple circular through holes equally spaced on one side of connecting disc one and connecting disc two, with fixing bolts movably passing through the interior of each of the multiple circular through holes, and a nut threadedly connected to one end of each fixing bolt.

[0008] The aforementioned components achieve the following effects: the outer protective tank, the circular connecting cover, and the internal impact-resistant buffer pad form a multi-layered protective structure that can effectively resist external impacts and reduce the risk of damage to the high-pressure hydrogen storage tank. The ventilation and cooling mechanism can regulate the temperature of the high-pressure hydrogen storage tank to prevent excessive temperature from affecting the hydrogen storage performance and safety. Connecting disc one and connecting disc two, together with the circular through hole, fixing bolts and nuts, achieve a stable and detachable connection between the outer protective tank and the circular connecting cover, facilitating later inspection and maintenance.

[0009] Preferably, the ventilation and cooling mechanism includes an annular channel, a mounting housing, a fan, a connecting pipe, an air inlet pipe, and an electrically controlled valve. The annular channel is formed on the inner wall of the impact-resistant buffer pad located inside the outer protective tank. The mounting housing is fixedly installed on the outer surface of the outer protective tank near the top left end. A fan is fixedly installed on one side of the mounting housing. A connecting pipe is fixedly installed on the end of the mounting housing away from the fan. One end of the connecting pipe extends into the interior of the annular channel. An air inlet pipe is fixedly installed through the outer surface of the outer protective tank near the bottom right end. One end of the air inlet pipe extends into the interior of the annular channel. A filter cartridge is fixedly installed at the bottom end of the air inlet pipe. Electrically controlled valves are fixedly installed on the outer surfaces of the connecting pipe and the air inlet pipe, respectively.

[0010] The effects achieved by the above components are as follows: In the air cooling mechanism, the fan generates airflow, which enters the annular channel through the connecting pipe. The annular channel surrounds the high-pressure hydrogen storage tank, achieving all-round heat dissipation. The air intake pipe introduces outside air, which works in conjunction with the fan airflow to enhance the heat dissipation effect. The filter cartridge filters impurities in the air to prevent them from affecting the cooling performance and damaging the tank, improves the controllability and energy efficiency of the cooling system, and ensures that the high-pressure hydrogen storage tank operates at a suitable temperature.

[0011] Preferably, two mounting rings are fixedly installed on the outer surface of the outer protective tank, and brackets are fixedly installed on the outer surfaces of both mounting rings. A support base is fixedly installed on the bottom surface of the bracket by bolts.

[0012] The aforementioned components achieve the following effects: the mounting ring, bracket, and support base form a stable support system that can withstand the weight of the high-pressure hydrogen storage tank and external forces during use, ensuring that the high-pressure hydrogen storage tank remains stable after installation and is not prone to shaking or displacement, providing a reliable installation foundation for the high-pressure hydrogen storage tank and adapting to various usage environments.

[0013] Preferably, the outer surface of the circular connecting cover is provided with a rubber sheath.

[0014] The effect achieved by the above components is that the rubber sheath has good wear resistance and elasticity, and when it covers the outside of the circular connecting cover, it can further buffer external impacts and protect the circular connecting cover and its internal structure.

[0015] Preferably, an inflation pipe is fixedly installed at the right end of the high-pressure hydrogen storage tank, and one end of the inflation pipe extends to the outside of the circular connecting cover.

[0016] The aforementioned components achieve the following effects: the filling pipeline provides a dedicated hydrogen filling channel for the high-pressure hydrogen storage tank, facilitating quick and accurate connection with external hydrogen refueling equipment, ensuring an efficient and convenient hydrogen filling process, and meeting the hydrogen storage requirements of the high-pressure hydrogen storage tank.

[0017] Preferably, a rectangular base plate is fixedly installed on the bottom surface of the support base, and a plurality of mounting through holes are provided on the top surface of the rectangular base plate.

[0018] The effects achieved by the above components are as follows: the rectangular base plate and the mounting through holes facilitate the fixing of the high-pressure hydrogen storage tank to various mounting platforms by bolts and other connecting parts, further enhancing the installation stability, enabling the high-pressure hydrogen storage tank to be stably installed in different equipment and places, and improving the versatility and applicability of the device.

[0019] In summary:

[0020] 1. In this application, the outer protective tank, the circular connecting cover and its internal impact-resistant buffer pad, and the rubber sleeve outside the circular connecting cover form a multi-layer buffer structure that absorbs impact force layer by layer, providing all-round protection for the high-pressure hydrogen storage tank and improving its safety and stability. During inspection and maintenance, the outer protective tank and the circular connecting cover can be disassembled by unscrewing the fixing bolts and nuts, making the operation simple and convenient for inspection and maintenance of the high-pressure hydrogen storage tank. This device can effectively reduce the risk of serious damage during transportation and use, while improving the convenience of inspection and maintenance, and taking into account safety, stability and practicality.

[0021] 2. In this application, when the high-pressure hydrogen storage tank is being filled with hydrogen or in use, the temperature rises due to factors such as gas compression and ambient temperature. The ventilation and cooling mechanism is immediately activated, the electronically controlled valve is opened, and the fan runs. The air filtered by the filter cartridge is sent into the annular channel through the connecting pipe. The air flows in the annular channel, effectively removing the heat from the surface of the high-pressure hydrogen storage tank, thereby achieving cooling and maintaining the tank at a suitable working temperature. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a side sectional view of the present invention.

[0024] Figure 3 This is a schematic diagram of the outer protective tank of this utility model before installation.

[0025] Legend: 1. High-pressure hydrogen storage tank; 2. Outer protective tank; 3. Circular connecting cover; 4. Impact-resistant buffer pad; 5. Ventilation and cooling mechanism; 501. Annular channel; 502. Mounting shell; 503. Fan; 504. Connecting pipe; 505. Inlet pipe; 506. Electrically controlled valve; 6. Connecting plate one; 7. Connecting plate two; 8. Circular through hole; 9. Mounting ring; 10. Bracket; 11. Support base; 12. Rubber sheath; 13. Gas filling pipe; 14. Rectangular base plate; 15. Mounting through hole. Detailed Implementation

[0026] Reference Figures 1-3As shown, this utility model provides a technical solution: a high-capacity stable high-pressure hydrogen storage tank, including a high-pressure hydrogen storage tank 1, an outer protective tank body 2 on the outer surface of the high-pressure hydrogen storage tank 1, circular connecting covers 3 on the left and right ends of the outer protective tank body 2, a rubber sleeve 12 on the outer surface of the circular connecting covers 3, and impact-resistant buffer pads 4 inside both the outer protective tank body 2 and the circular connecting covers 3. A ventilation and cooling mechanism 5 is provided on the outer surface of the outer protective tank body 2. The high-pressure hydrogen storage tank 1 consists of a three-layer structure, with the innermost liner made of high-strength aluminum alloy material, such as 6061 aluminum alloy or 7075 aluminum alloy. This type of material has good toughness and fatigue resistance, and can withstand high pressure. With a low density, the weight of the tank can be effectively reduced. The inner liner is wrapped with a high-performance carbon fiber composite material. The outermost layer is the outer protective layer, which is usually made of glass fiber reinforced plastic (FRP) or special polymer materials. The outer protective tank 2, the circular connecting cover 3 and the impact-resistant buffer pad 4 together form a protective structure that can effectively resist external impacts and reduce the risk of damage to the high-pressure hydrogen storage tank 1. The rubber sleeve 12 can further enhance the wear resistance and impact resistance of the circular connecting cover 3. The ventilation and cooling mechanism 5 can actively regulate the temperature of the high-pressure hydrogen storage tank 1 to avoid affecting the hydrogen storage performance and safety due to excessive temperature, and ensure the stable operation of the hydrogen storage tank.

[0027] Reference Figures 1-3 As shown, a gas filling pipe 13 is fixedly installed on the right end of the high-pressure hydrogen storage tank 1, and one end of the gas filling pipe 13 extends to the outside of the circular connecting cover 3. The gas filling pipe 13 provides a dedicated channel for hydrogen filling, and its design of extending to the outside of the circular connecting cover 3 facilitates quick and convenient connection with external hydrogen refueling equipment, ensuring that the hydrogen filling process is carried out efficiently and meeting the hydrogen storage requirements of the high-pressure hydrogen storage tank 1.

[0028] Reference Figures 1-3 As shown, connecting disc 1 6 is fixedly installed at both ends of the outer protective tank 2, and connecting disc 2 7 is fixedly installed at the end of the circular connecting cover 3 near the outer protective tank 2. Multiple circular through holes 8 are evenly spaced on one side of connecting disc 1 6 and connecting disc 2 7, and fixing bolts are movably inserted into the interior of each of the multiple circular through holes 8, with a nut threaded onto one end of each fixing bolt. By using connecting disc 1 6 and connecting disc 2 7 in conjunction with the circular through holes 8, fixing bolts, and nuts, a stable and detachable connection structure can be formed, which facilitates the assembly and disassembly of the outer protective tank 2 and the circular connecting cover 3, and facilitates the later inspection and maintenance of the high-pressure hydrogen storage tank 1. At the same time, a sealing gasket is provided at the connection of connecting disc 1 6 and connecting disc 2 7 to ensure the reliability and sealing of the connection.

[0029] Reference Figures 1-3As shown, the ventilation and cooling mechanism 5 includes an annular channel 501, a mounting housing 502, a fan 503, a connecting pipe 504, an air inlet pipe 505, and an electrically controlled valve 506. The annular channel 501 is provided on the inner wall of the impact-resistant buffer pad 4 inside the outer protective tank 2. The mounting housing 502 is fixedly installed on the outer surface of the top of the outer protective tank 2 near the left end. The fan 503 is fixedly installed on one side of the mounting housing 502. The connecting pipe 504 is fixedly installed on the end of the mounting housing 502 away from the fan 503. One end of the connecting pipe 504 extends into the interior of the annular channel 501. By starting the fan 503, airflow is generated, allowing the air inside the annular channel 501 to be quickly discharged through the connecting pipe 504 and the fan 503. The annular channel 501 is arranged around the high-pressure hydrogen storage tank 1, which can achieve all-round and efficient heat dissipation.

[0030] Reference Figures 1-3 As shown, an air inlet pipe 505 is fixedly installed on the outer surface of the outer protective tank 2 near the bottom right end. One end of the air inlet pipe 505 extends into the interior of the annular channel 501. A filter cartridge is fixedly installed at the bottom end of the air inlet pipe 505. Electrically controlled valves 506 are fixedly installed on the outer surfaces of the connecting pipe 504 and the air inlet pipe 505, respectively. The air inlet pipe 505 facilitates the introduction of outside air into the annular channel 501. The filter cartridge can effectively filter impurities in the air and prevent dust and other foreign objects from entering the annular channel 501, affecting the cooling performance or causing damage to the high-pressure hydrogen storage tank 1. The electrically controlled valves 506 can control the opening and closing of the air inlet pipe 505 and the connecting pipe 504 respectively, and precisely adjust the working state of the cooling system.

[0031] Reference Figures 1-3 As shown, two mounting rings 9 are fixedly installed on the outer surface of the outer protective tank 2, and brackets 10 are fixedly installed on the outer surface of both mounting rings 9. A support base 11 is fixedly installed on the bottom surface of the bracket 10 by bolts. A rectangular base plate 14 is fixedly installed on the bottom surface of the support base 11. Multiple mounting through holes 15 are opened on the top surface of the rectangular base plate 14. The mounting rings 9, brackets 10, support base 11 and rectangular base plate 14 form a stable support structure. The mounting through holes 15 facilitate the fixing of the hydrogen storage tank on various installation platforms, enhance the stability of the hydrogen storage tank installation, and make the hydrogen storage tank less prone to shaking or displacement during use, adapting to different usage environments and installation requirements.

[0032] Working principle: During use, the high-pressure hydrogen storage tank 1 is filled with hydrogen through the gas filling pipe 13 connected to the external hydrogen filling equipment. When the high-pressure hydrogen storage tank 1 is filled with hydrogen or in use, the temperature rises due to factors such as gas compression and ambient temperature. The ventilation and cooling mechanism 5 is immediately activated, the electric control valve 506 is opened, and the fan 503 is turned on. The air filtered by the filter cartridge is sent into the annular channel 501 through the connecting pipe 504. The air flows in the annular channel 501, effectively removing the heat from the surface of the high-pressure hydrogen storage tank 1, achieving cooling and maintaining a suitable working temperature for the tank.

[0033] When encountering external impacts, the outer protective tank 2, the circular connecting cover 3, the internal impact-resistant buffer pad 4, and the rubber sleeve 12 outside the circular connecting cover 3 form a multi-layered buffer structure that absorbs the impact force layer by layer, providing all-round protection for the high-pressure hydrogen storage tank 1 and improving its safety and stability. During inspection and maintenance, the outer protective tank 2 and the circular connecting cover 3 can be disassembled by unscrewing the fixing bolts and nuts, making the operation simple and convenient for inspection and maintenance of the high-pressure hydrogen storage tank 1. In addition, the mounting ring 9, bracket 10, support base 11, and rectangular base plate 14 constitute a stable support structure, ensuring that the high-pressure hydrogen storage tank 1 remains in a stable installation state throughout its use. This device, through the combined design of the outer protective tank 2, the circular connecting cover 3, and the impact-resistant buffer pad 4, provides reliable protection for the high-pressure hydrogen storage tank 1, effectively reducing the risk of serious damage during transportation and use, while improving the convenience of inspection and maintenance, and taking into account safety, stability, and practicality.

[0034] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A high-capacity stable high-pressure hydrogen storage tank comprising a high-pressure hydrogen storage tank (1), characterized by: The outer surface of the high-pressure hydrogen storage tank (1) is provided with an outer protective tank body (2), the left and right ends of the outer protective tank body (2) are respectively provided with a circular connecting cover (3), the inside of the outer protective tank body (2) and the circular connecting cover (3) is provided with an impact-resistant buffer pad (4), the outer surface of the outer protective tank body (2) is provided with a ventilation cooling mechanism (5), the left and right ends of the outer protective tank body (2) are respectively fixedly installed with a connecting disc one (6), the end of the circular connecting cover (3) close to the outer protective tank body (2) is fixedly installed with a connecting disc two (7), a plurality of circular through holes (8) are arranged at equal intervals on one side of the connecting disc one (6) and the connecting disc two (7), and a fixing bolt is movably arranged in each of the plurality of circular through holes (8), and the end of the fixing bolt is threadedly connected with a nut.

2. The high-capacity stable high-pressure hydrogen storage tank according to claim 1, characterized by: The ventilation cooling mechanism (5) comprises an annular channel (501), a mounting shell (502), a fan (503), a connecting pipeline (504), an air inlet pipeline (505) and an electric control valve (506), the inner wall surface of the impact-resistant buffer pad (4) in the outer protective tank body (2) is provided with an annular channel (501), the outer surface of the outer protective tank body (2) close to the left end top is fixedly installed with a mounting shell (502), one side of the mounting shell (502) is fixedly installed with a fan (503), one end of the mounting shell (502) away from the fan (503) is fixedly installed with a connecting pipeline (504), one end of the connecting pipeline (504) extends into the annular channel (501), the outer surface of the outer protective tank body (2) close to the right end bottom is fixedly installed with an air inlet pipeline (505), one end of the air inlet pipeline (505) extends into the annular channel (501), and a filter cartridge is fixedly installed at the bottom end of the air inlet pipeline (505). The outer surfaces of the connecting pipeline (504) and the air inlet pipeline (505) are respectively fixedly installed with electric control valves (506).

3. The high-capacity stable high-pressure hydrogen storage tank according to claim 1, characterized by: The outer surface of the outer protective tank body (2) is fixedly installed with two mounting rings (9), and the outer surfaces of the two mounting rings (9) are respectively fixedly installed with supports (10), and the bottom surface of the support (10) is fixedly installed with a support seat (11) through a bolt.

4. The high-capacity stable high-pressure hydrogen storage tank according to claim 1, characterized by: The outer surface of the circular connecting cover (3) is provided with a rubber sheath (12).

5. The high-capacity stable high-pressure hydrogen storage tank according to claim 1, characterized by: The right end of the high-pressure hydrogen storage tank (1) is fixedly installed with a gas filling pipeline (13), and one end of the gas filling pipeline (13) extends to the outside of the circular connecting cover (3).

6. The high-capacity stable high-pressure hydrogen storage tank according to claim 3, characterized by: The bottom surface of the support seat (11) is fixedly installed with a rectangular bottom plate (14), and a plurality of mounting through holes (15) are formed in the top surface of the rectangular bottom plate (14). The bottom surface of the support seat (11) is fixedly installed with a rectangular bottom plate (14), and a plurality of mounting through holes (15) are formed in the top surface of the rectangular bottom plate (14).

Images