System for land transport of hydrogen

Abstract

The utility model provides a system of land transportation hydrogen, including hydrogen ball (3), ballast (4), track trolley (6), track (7), metal connecting rod (8) and installation cable (10), track trolley (6) sets up on track (7) and can move along track (7), ballast (4) is connected with track trolley (6) through metal connecting rod (8), hydrogen ball (3) is connected with ballast (4) through installation cable (10), wherein, hydrogen ball (3) includes the capsule, the capsule includes the force layer from inside to outside, prevents the infiltration layer and the outer protection layer, and the capsule is used for filling hydrogen. The utility model has the characteristics of safety, economy and high efficiency, and the single hydrogen transportation amount is improved significantly, and is applicable to the hydrogen energy large -scale application of remote area and fixed industrial route.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen energy storage and transportation technology, specifically to a land-based hydrogen transportation system, and in particular to a mechanical structure system based on hydrogen balloons and rail traction. Background Technology

[0002] Hydrogen energy, as a clean secondary energy source, relies on safe and efficient storage and transportation technologies for its large-scale application. Currently, the mainstream methods for hydrogen transportation are high-pressure gaseous hydrogen transport and cryogenic liquid hydrogen transport, but both have significant drawbacks: 1) High-pressure gaseous hydrogen transport: Low hydrogen storage density: Long-tube trailers use 15-35 MPa high-pressure gas cylinders for transportation, and the amount of hydrogen transported by a single vehicle per trip is less than 500 kg. The hydrogen storage density per unit mass is only 1%-2%, resulting in low transportation efficiency and poor economic performance.

[0003] Hydrogen embrittlement risk: Gas cylinders and pipelines are prone to hydrogen atom permeation in high-pressure hydrogen environments, leading to problems such as hydrogen-induced cracking and hydrogen bubbling, and significant deterioration of the mechanical properties of materials. For example, pure hydrogen pipelines require special low-carbon steel, costing more than twice that of ordinary pipelines, and require frequent inspection for cracks and micro-leakage, resulting in extremely high operational safety costs.

[0004] Safety threats: During transportation, gas cylinders are subjected to external impacts such as vibration and collisions. If a leak or explosion occurs in a residential area or on a major traffic route, the consequences will be severe.

[0005] 2) Cryogenic liquid hydrogen transport: High energy consumption for liquefaction: Hydrogen liquefaction requires cooling to -253℃, and the energy consumption for liquefaction is 13-15 kWh / kg, which accounts for nearly half of the low calorific value of hydrogen combustion (33.3 kWh / kg), resulting in significant energy waste.

[0006] Significant evaporation losses: Liquid hydrogen boils and evaporates during transportation due to factors such as thermal stratification and the conversion of ortho- and para-hydrogen, requiring multi-layer vacuum insulation technology and active refrigeration equipment, resulting in high cold preservation costs. For example, liquid hydrogen tank trucks need to be equipped with self-evaporating vapor cooling screens and variable-density insulation layers, which are complex and have a low degree of domestic production.

[0007] High safety costs: Liquid hydrogen is sensitive to vibration, and slight disturbances may cause boiling explosions, requiring dedicated receiving facilities and emergency plans, which further increases investment.

[0008] One existing improved method for transporting hydrogen at sea (see *International Journal of Hydrogen Energy*) utilizes high-altitude hydrogen balloons propelled by wind. However, this method has the following limitations: Limited application scenarios: Only suitable for maritime transport, relying on natural wind power and auxiliary ship steering, unable to operate stably in complex land terrain. Poor controllability: The balloon lacks an active traction device, making the transport path uncontrollable, and it does not solve the technical challenges unique to land transport, such as ballast balance. Insufficient safety: Key structures such as hydrogen balloon fixation and hydrogen unloading platforms are not designed for land environments, making it difficult to cope with sudden weather conditions.

[0009] Therefore, there is an urgent need for a land-based hydrogen transportation system that can increase hydrogen density under low-pressure conditions, avoid hydrogen embrittlement and liquid hydrogen evaporation, and reduce equipment investment and operating costs. Utility Model Content

[0010] This invention aims to provide a land-based hydrogen transportation system. Through the design of hydrogen balloons, ballast tanks, railcars, and tracks, it solves the problems of low hydrogen storage density (1%-2%) and high hydrogen embrittlement risk in existing high-pressure gaseous hydrogen transportation, as well as high energy consumption and high cold storage costs in cryogenic liquid hydrogen transportation.

[0011] This utility model provides a land-based hydrogen transportation system, including a hydrogen balloon, a ballast tank, a railcar, a track, a metal connecting rod, and an installation cable; the railcar is mounted on the track and can move along the track, the ballast tank is connected to the railcar via the metal connecting rod, and the hydrogen balloon is connected to the ballast tank via the installation cable; The hydrogen balloon includes a capsule, which comprises a load-bearing layer, an impermeable layer, and an outer protective layer from the inside out, and is used to fill the capsule with hydrogen gas.

[0012] This invention utilizes a mechanical linkage between a hydrogen balloon, ballast tank, tram, track, metal connecting rod, and installation cables to achieve low-pressure hydrogen transportation. This avoids the problems of high-pressure hydrogen embrittlement and the energy consumption associated with liquid hydrogen. The ballast tank balances buoyancy with counterweights, and the tram pulls along the track, adapting to complex terrain and avoiding the route deviation risks of traditional vehicles, thus improving the controllability of the transportation path. The low-pressure environment (0.025-0.1 MPa) reduces the hydrogen diffusion rate, and combined with the composite impermeable structure of the hydrogen balloon (load-bearing layer, impermeable layer, and outer protective layer), effectively suppresses hydrogen escape. This system significantly increases hydrogen storage density (eliminating the need for high pressure / liquefaction), reduces equipment costs (eliminating the need for high-pressure pipelines or liquid hydrogen insulation facilities), and achieves a balance of efficiency, safety, and economy in land-based hydrogen transportation by transporting it away from high-risk ground areas.

[0013] Optionally, the front end of the hydrogen balloon is provided with a head cone, and the system also includes a tethering device. The head cone includes a mounting base and a traction part connected thereto. The mounting base is connected to the balloon body, and the traction part is connected to the tethering device. The tethering device is used to fix the position of the hydrogen balloon during hydrogen filling or unloading. The tail end of the hydrogen balloon is provided with a tail fin.

[0014] During hydrogen filling or unloading, hydrogen balloons are prone to drifting due to buoyancy or external environmental factors (such as wind), leading to difficulties in interface docking or an increased risk of hydrogen leakage. By connecting the tethering device to the head cone traction unit, the hydrogen balloon is securely fixed to the working platform during hydrogen filling / unloading, ensuring precise docking of the hydrogen filling or unloading interface and reducing operational risks.

[0015] Optionally, the bottom of the ballast tank is provided with a load-bearing hook, which is connected to the tram via the metal connecting rod.

[0016] The ballast is equipped with a load-bearing hook that works in conjunction with a metal connecting rod to distribute traction force and increase tensile strength, ensuring reliable linkage between the ballast and the tram and improving system flexibility.

[0017] Optionally, the tram is a battery-powered electric vehicle, which is equipped with running wheels and guide wheels; the track is a monorail with an open box-shaped track beam; the running wheels and guide wheels are embedded in the open box-shaped track beam of the monorail.

[0018] Traditional rail vehicles are prone to derailment on curves or slopes, affecting safety and continuity. The running wheels and guide wheels are embedded within open box-type track beams, and the track cross-section matches the wheel assembly profile to form a mechanical restraint, preventing battery-powered locomotives from derailing.

[0019] Optionally, the system further includes support columns for supporting the track.

[0020] The system also includes support columns for supporting the track, overcoming the shortcomings of existing track systems such as complex installation, easy loosening of connections, and difficulty in adapting to terrain changes. Straight rails, horizontal curved rails, or vertical curved rails are fixed to the top of the support columns; the straight rails are connected by lifting lugs, and the curved rails are connected by flanges, enabling modular installation in conjunction with the support columns and reducing construction costs.

[0021] Optionally, the system further includes a hydrogen refueling platform and a hydrogen unloading platform; the tethering device includes a hydrogen refueling tethering device and a hydrogen unloading tethering device; the hydrogen refueling platform includes a first area for accommodating the railcar and a second area for accommodating the hydrogen balloon; the second area is provided with the hydrogen refueling tethering device and a hydrogen filling interface, the hydrogen refueling tethering device being a cable connecting the hydrogen balloon and the hydrogen refueling platform; the hydrogen unloading platform includes a third area for accommodating the railcar and a fourth area for accommodating the hydrogen balloon; the fourth area is provided with a hydrogen unloading interface, a folding guide mechanism, and the hydrogen unloading tethering device, the hydrogen unloading tethering device being a cable connecting the hydrogen balloon and the hydrogen unloading platform; the folding guide mechanism is used to fold the hydrogen balloon after hydrogen unloading.

[0022] Traditional hydrogen refueling and unloading platforms have limited functionality and overlapping operating spaces, leading to a high risk of hydrogen leakage, low loading and unloading efficiency, and a lack of dedicated structures for folding hydrogen balloons, which can easily cause operational errors or equipment damage. This invention's hydrogen refueling platform has a first area for accommodating a railcar, and a second area integrating a hydrogen filling interface and a hydrogen tethering device, with the filling interface connected to a hydrogen buffer tank. The third area of ​​the unloading platform accommodates the railcar, and the fourth area uses a folding guide mechanism to fold the unloaded hydrogen balloons, with the unloading interface connected to a hydrogen compressor. This invention achieves functional zoning through the design of the hydrogen refueling and unloading platforms and is equipped with a directional tethering device, improving operational safety and efficiency. The dedicated folding mechanism simplifies the hydrogen balloon recovery process, providing a standardized, low-risk hydrogen refueling and unloading solution for land-based hydrogen transportation.

[0023] Optionally, the hydrogenation working platform is provided with a hydrogenation partition structure and the hydrogen unloading working platform is provided with a hydrogen unloading partition structure; the hydrogenation partition structure is used to separate the formation of the first region and the second region, the hydrogen unloading partition structure is used to separate the formation of the third region and the fourth region, and the hydrogenation partition structure and the hydrogen unloading partition structure include a groove for accommodating the movement of the metal connecting rod.

[0024] The hydrogen filling and unloading partitions physically isolate different functional areas while providing a directional movement channel for the metal connecting rod through the groove structure. This ensures safe isolation between work areas (reducing the risk of hydrogen escape) and avoids mechanical friction or collision between the connecting rod and the partition, improving the stability and operational efficiency of the hydrogen filling and unloading process. It also further optimizes the spatial layout safety of the system and the reliability of equipment collaborative operation.

[0025] Optionally, the two ends of the installation cable are connected to the hydrogen balloon and the ballast tank respectively via buckles.

[0026] Optionally, the length of the cable connecting the hydrogen balloon and the ballast is adjustable, and the two ends are connected by a locking buckle to match the buoyancy of the hydrogen balloon and the counterweight of the ballast in real time, so as to avoid tearing of the balloon or failure of the connection.

[0027] Optionally, the metal connecting rod is a telescopic rod structure.

[0028] Traditional connecting rods cannot adapt to ballast attitude deflection caused by track inclines or curves, easily leading to stress concentration. Telescopic metal rods allow for free length adjustment, eliminating mechanical stress caused by terrain changes and ensuring dynamic synchronization.

[0029] Optionally, the track's supporting column is provided with a telescopic sleeve structure, which consists of an inner sleeve and an outer sleeve. The inner sleeve has several adjustment holes, and the outer sleeve has fixing holes. The inner sleeve and the outer sleeve are fixed together by pins or bolts. The supporting column is fixed to the ground by anchor bolts.

[0030] Traditional tracks often lack supporting columns or have fixed-height supporting columns, making them difficult to adapt to terrain and resulting in poor foundation stability. This invention features supporting columns with a retractable sleeve structure, secured by pins or bolts to different holes in the inner and outer sleeves, allowing for segmented height adjustment. The bottom is secured with anchor bolts, enhancing adaptability to uneven ground, improving wind and earthquake resistance, and ensuring long-term stable system operation.

[0031] Compared with the prior art, the present invention has the following beneficial effects: This invention achieves multi-dimensional optimization of land-based hydrogen transportation through the following structural design: 1. High safety: Through the design of hydrogen balloons, ballast tanks, railcars and tracks, the risks of high-pressure hydrogen embrittlement and liquid hydrogen boiling are completely avoided. Combined with the impermeable bladder of the hydrogen balloon, the risk of leakage and explosion is significantly reduced. 2. High economic efficiency: It eliminates high-cost facilities such as high-pressure pipelines and liquid hydrogen insulation equipment. The track adopts modular splicing of light rail, which significantly reduces the initial investment and operating costs. 3. High efficiency and flexibility in transportation: The hydrogen balloon can carry far more hydrogen per trip than a traditional long-tube trailer (5-10 times more), and it is adaptable to complex terrain; the air transport route avoids residential areas and is suitable for remote areas and fixed industrial routes. 4. Excellent stability: The dynamic balance between ballast and hydrogen balloon buoyancy, along with the track limit design, ensures stable posture during transportation and outstanding wind and earthquake resistance. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the structure of the land-based hydrogen transportation system of this utility model.

[0033] Among them, 1-hydrogen storage tank at the hydrogen production site; 2-hydrogen buffer tank; 3-hydrogen balloon; 4-ballast tank; 5-tethering device; 6-rail trolley; 7-track; 8-metal connecting rod; 9-hydrogen refueling platform; 10-installation cable; 11-hydrogen unloading platform; 12-hydrogen compressor; 13-high-pressure hydrogen storage tank at the hydrogen use site. Detailed Implementation

[0034] The present invention will be further described below with reference to specific embodiments, but this does not constitute any limitation on the present invention.

[0035] Example like Figure 1 As shown, the land-based hydrogen transportation system includes: a hydrogen balloon 3, a ballast tank 4, a railcar 6, a track 7, a metal connecting rod 8, an installation cable 10, a hydrogen refueling platform 9, a hydrogen unloading platform 11, and a mooring device 5.

[0036] 1. Hydrogen Balloon 3: The capsule of Hydrogen Balloon 3 consists of a load-bearing layer, an impermeable layer, and an outer protective layer, from the inside out. The capsule is filled with hydrogen gas. The front end of Hydrogen Balloon 3 is equipped with a nose cone, and the rear end of Hydrogen Balloon 3 is equipped with a tail fin.

[0037] Load-bearing layer: Low-count polyester fiber fabric (areal density < 230 g / m², tensile strength > 1000 N / cm), filled with hydrogen to provide mechanical support; Anti-permeability layer: Mylar polyester film (0.05mm thick), bonded to the load-bearing layer with Hytrol adhesive (bonding strength ≥0.69kg / cm²), inhibiting hydrogen permeation; Outer protective layer: Tedlar fluoropolymer (0.1 mm thick) covers the outer surface of the capsule, resistant to ultraviolet light and chemical corrosion.

[0038] External parameters of the cyst: ellipsoidal, for example, with a maximum length of 220m, a maximum diameter of 55m, and a volume of 3.2 × 10⁻⁶ m. 5 m³, with reinforcing ribs evenly distributed on the surface to resist wind load.

[0039] Head cone: A cone-shaped soft structure, the head cone includes a mounting base and a traction part connected thereto; the mounting base at the front end is bonded to the balloon body, and the traction part is connected to the tethering device 5 through a metal ring. The tethering device 5 is used to fix the position of the hydrogen balloon 3 during hydrogen filling or unloading.

[0040] Tail fin: Increases the balloon's wind resistance and enhances its self-stability.

[0041] 2. Ballast 4 Ballast chamber 4 is a rectangular box structure with a load-bearing hook welded to the bottom. The load-bearing hook is hinged to the railcar 6 via a metal connecting rod 8. For example, the interior of ballast chamber 4 is divided into a counterweight compartment and a cargo compartment, with the counterweight compartment located at the bottom and separated by a removable partition. The metal connecting rod 8 is a telescopic rod structure; for example, the metal connecting rod 8 is a telescopic round tube (made of Q345 steel) with a length adjustment range of 1200-1600mm. The length can be adjusted via threads to adapt to different working conditions.

[0042] The two ends of the installation cable 10 are connected to the installation base of the hydrogen balloon 3 and the fixing ring on the top of the ballast tank 4 via buckles. For example, the installation cable 10 is a 15mm diameter Kevlar composite cable with an integrated fiber optic sensor (monitoring changes in tension), and its length is adjusted by an electric winch.

[0043] 3. Tram 6 Tram 6 is a battery-powered electric locomotive.

[0044] Traction mechanism: Running wheels: Double wheel set structure, wheel diameter 300mm, made of wear-resistant alloy steel, embedded in the open box-shaped track beam of track 7.

[0045] Guide rollers: lateral rollers (150mm in diameter) that contact the inner wall of the track beam to prevent lateral deviation.

[0046] Power system: Lithium-ion battery pack (600V, 500Ah), drive motor power 120kW, maximum traction force 90kN, operating speed is 1.6-2.0m / s.

[0047] 4. Orbit 7 Track 7 is a monorail with an open box-shaped track beam.

[0048] Track type: Straight rail: German standard I140E light rail, 1-3m in length, connected by lifting lug bolts; Horizontal curved rail: 4m radius of curvature, flange connection, suitable for turning scenarios; Vertical curved rail: curvature radius 10m, used for transition between uphill and downhill slopes (slope ≤ 12°). Supporting columns: Structure: The support column is equipped with a telescopic sleeve structure, including an inner sleeve and an outer sleeve (outer sleeve Φ200mm, inner sleeve Φ180mm). The inner sleeve is provided with adjustment holes spaced 50mm apart, and the outer sleeve is provided with matching fixing holes. The height (1200-1600mm) is fixed by a pin.

[0049] Installation: The bottom flange (400mm×400mm) is fixed to the concrete foundation with M20 anchor bolts. For soft soil foundations, diagonal bracing rods (Φ50mm steel pipes) are added.

[0050] 5. Hydrogenation and hydrogen unloading platform: The hydrogen refueling platform 9 is divided into a first area (accommodating the railcar 6) and a second area (accommodating the hydrogen balloon 3), separated by a hydrogen refueling partition structure. The partition structure has a groove for the metal connecting rod 8 to pass through as it moves with the railcar 6. The second area is equipped with a hydrogen refueling mooring device (a cable connecting the hydrogen balloon 3 to the hydrogen refueling platform 9) and a hydrogen filling interface, which is connected to the valve of the hydrogen balloon 3 via a hose.

[0051] The hydrogen unloading platform 11 is divided into a third area (accommodating the railcar 6) and a fourth area (accommodating the hydrogen balloon 3), separated by a hydrogen unloading partition structure. The fourth area is equipped with a hydrogen unloading interface, a folding guide mechanism, and a hydrogen unloading mooring device (the cable connecting the hydrogen balloon 3 and the hydrogen unloading platform 11). The hydrogen unloading partition structure also has a groove for the metal connecting rod 8 to move.

[0052] Working principle: 1. Hydrogen charging stage (1) Hydrogen preparation High-pressure hydrogen storage: Hydrogen storage tank 1 at the hydrogen production site stores hydrogen produced by the hydrogen production equipment at a pressure of 20-40 MPa. The material is made of special steel resistant to hydrogen embrittlement to ensure long-term safe storage.

[0053] Pressure reduction and buffer: High-pressure hydrogen is delivered to hydrogen buffer tank 2 through pipeline. The multi-stage pressure reducing valve in the tank reduces the pressure to 0.025-0.1 MPa to avoid the risk of material leakage from hydrogen balloon 3 due to high pressure.

[0054] (2) Filling hydrogen balloons with hydrogen Connecting the hydrogen filling interface: In the second area of ​​the hydrogen refueling platform 9, a stainless steel hose connects the hydrogen buffer tank 2 to the hydrogen filling interface of the hydrogen balloon 3.

[0055] Securing the hydrogen balloon: The hydrogen tethering device anchors the three cone-shaped hydrogen balloon to the platform using a locking mechanism to prevent it from shaking during hydrogen filling.

[0056] Hydrogen injection: Low-pressure hydrogen is slowly injected into hydrogen balloon 3. The balloon body is a composite structure composed of polyester fiber fabric, polyester film, and fluoropolymer to suppress hydrogen permeation (helium permeability < 0.5 L / (m³)). 2 ·24h·0.1MPa).

[0057] (3) Ballast loading Ballast calculation: Ballast 4 is loaded with water or cargo, and the total weight is the buoyancy of the hydrogen balloon minus the weight of the ballast, which is 0.5-2.0 tons, to ensure that buoyancy and gravity are balanced.

[0058] Connecting tram 6: The load-bearing hook at the bottom of the ballast 4 is hinged to tram 6 via a metal connecting rod 8 (extendable to 1200-1600mm) (rotation angle ±10°) to adapt to changes in track slope.

[0059] 2. Transportation Phase (1) Tram 6 traction start Power drive: The railcar 6 is a battery-powered electric car. The lithium-ion battery pack (600V / 500Ah) of the battery-powered electric car drives a 120kW motor, providing a maximum traction force of 90kN. For example, it moves along the track 7 at a speed of 1.6-2.0m / s.

[0060] Wheel-rail limiting: Track 7 is a monorail with an open box-shaped track beam. The running wheel (300mm wheel diameter) and the guide wheel (150mm wheel diameter) are embedded in the open box-shaped track beam of the monorail. The track cross section matches the wheel set profile to prevent derailment.

[0061] (2) Attitude control of hydrogen balloon Dynamic cable adjustment: The length of the installation cable 10 is adjusted in real time by an electric winch to match the terrain undulations and buoyancy changes, avoiding excessive tightness or looseness that could cause the bladder to tear.

[0062] (3) Track adaptability Modular track splicing: Straight rails are connected by lifting lug bolts, while horizontal curved rails (curvature radius 4m) and vertical curved rails (curvature radius 10m) are fixed by flanges, adapting to turns and uphill / downhill slopes (slope ≤12°).

[0063] Height adjustment of support column: The support column is equipped with a telescopic sleeve structure, including an inner sleeve and an outer sleeve. The inner sleeve has several adjustment holes, and the outer sleeve has matching fixing holes. The height (1200-1600mm) is fixed by a pin. Anchor bolts and diagonal bracing rods (for soft soil foundations) enhance stability.

[0064] 3. Hydrogen unloading stage (1) Hydrogen recovery Hydrogen unloading interface connection: In the fourth area of ​​the hydrogen unloading work platform 11, a stainless steel hose connects the hydrogen unloading interface of the hydrogen balloon 3 to the inlet of the hydrogen compressor 12.

[0065] Hydrogen pressurization and storage: The hydrogen compressor 12 pressurizes the low-pressure hydrogen to 20-40 MPa and stores it in the high-pressure hydrogen storage tank 13 at the hydrogen-using site for end-user use.

[0066] (2) Folding and recycling of hydrogen balloons Post-hydrogen unloading guidance: The hydrogen balloon 3 folds along a preset path after hydrogen unloading via the folding guidance mechanism of the hydrogen unloading work platform 11, reducing the risk of manual operation.

[0067] Ballast removal: After the cargo or water in ballast 4 is unloaded, it is dismantled to facilitate land transportation.

[0068] (3) Tram recharging and maintenance Disassembly and charging: Tram 6 is disassembled from track 7, and the battery pack is charged in preparation for the next transport; Track inspection: Routine inspections are conducted on the connections between straight and curved rails and the supporting columns to ensure there is no loosening or corrosion.

[0069] 4. Safety and Emergency Measures (1) Leakage monitoring Fiber Optic Sensor: The cable 10 integrates a fiber optic sensor to monitor abnormal tension in real time and provide early warning of hydrogen leakage or bladder damage.

[0070] Pressure monitoring: The hydrogen balloon 3 is equipped with a pressure sensor, and the data is transmitted wirelessly to the control terminal. An alarm is triggered when the pressure is too high or too low.

[0071] (2) Weather adaptability Safe weather operation: Normal transportation is possible when air humidity > 80%, air temperature 10℃, and wind force ≤ 3. Dangerous weather conditions: The system will shut down when humidity is less than 50%, temperature is greater than 30°C, and wind force is greater than level 4. The hydrogen balloon should be tethered to the ground immediately.

[0072] As can be clearly seen from the above description of the embodiments, this utility model, through the design of hydrogen balloons, ballast tanks, railcars, and tracks, combined with an impermeable bladder, completely avoids the risks of high-pressure hydrogen embrittlement and liquid hydrogen boiling. The modular monorail (a combination of straight and curved rails) and light rail splicing design eliminates the need for high-pressure pipelines and liquid hydrogen insulation equipment. The hydrogen balloon's single-batch hydrogen transport capacity is significantly increased, and with adjustable support columns and ballast counterweights, it adapts to complex terrain, with the aerial path avoiding residential areas. This system combines safety, economy, efficiency, and stability, providing a reliable solution for large-scale land-based hydrogen energy transportation.

[0073] It should be noted that the embodiments described above are only for explaining the present invention and do not constitute any limitation on the present invention. The present invention has been described with reference to typical embodiments, but it should be understood that the words used therein are descriptive and explanatory terms, not limiting terms. Modifications can be made to the present invention within the scope of the claims, and revisions can be made to the present invention without departing from the scope and spirit of the present invention. Although the present invention described herein relates to specific methods, materials, and embodiments, it does not mean that the present invention is limited to the specific examples disclosed herein; on the contrary, the present invention can be extended to all other methods and applications with the same function.

Claims

1. A land-based system for transporting hydrogen, characterized in that, The system includes a hydrogen balloon (3), a ballast tank (4), a railcar (6), a track (7), a metal connecting rod (8), and a mounting cable (10); the railcar (6) is mounted on the track (7) and can move along the track (7); the ballast tank (4) is connected to the railcar (6) via the metal connecting rod (8); and the hydrogen balloon (3) is connected to the ballast tank (4) via the mounting cable (10). The hydrogen balloon (3) includes a capsule, which consists of a load-bearing layer, an impermeable layer and an outer protective layer from the inside out, and is used to fill the capsule with hydrogen gas.

2. The system according to claim 1, characterized in that, The hydrogen balloon (3) has a head cone at its front end and the system also includes a tethering device (5). The head cone includes a mounting base and a traction part connected thereto. The mounting base is connected to the balloon body, and the traction part is connected to the tethering device (5). The tethering device (5) is used to fix the position of the hydrogen balloon (3) during hydrogen filling or unloading. The tail of the hydrogen balloon (3) is provided with a tail fin.

3. The system according to claim 2, characterized in that, The bottom of the ballast chamber (4) is provided with a load-bearing hook, which is connected to the railcar (6) through the metal connecting rod (8).

4. The system according to claim 2, characterized in that, The tram (6) is a battery-powered electric vehicle, which is equipped with running wheels and guide wheels; the track (7) is a monorail with an open box-shaped track beam; the running wheels and guide wheels are embedded in the open box-shaped track beam of the monorail.

5. The system according to claim 2, characterized in that, The system also includes support columns for supporting the track (7).

6. The system according to any one of claims 2-5, characterized in that, The system also includes a hydrogen refueling platform (9) and a hydrogen unloading platform (11); the tethering device (5) includes a hydrogen refueling tethering device and a hydrogen unloading tethering device; the hydrogen refueling platform (9) includes a first area for accommodating the railcar (6) and a second area for accommodating the hydrogen balloon (3); the second area is provided with the hydrogen refueling tethering device and a hydrogen filling interface, the hydrogen refueling tethering device being a cable connecting the hydrogen balloon (3) and the hydrogen refueling platform (9); the hydrogen unloading platform (11) includes a third area for accommodating the railcar (6) and a fourth area for accommodating the hydrogen balloon (3); the fourth area is provided with a hydrogen unloading interface, a folding guide mechanism and the hydrogen unloading tethering device, the hydrogen unloading tethering device being a cable connecting the hydrogen balloon (3) and the hydrogen unloading platform (11); the folding guide mechanism is used to fold the hydrogen balloon (3) after hydrogen unloading.

7. The system according to claim 6, characterized in that, The hydrogenation work platform (9) is provided with a hydrogenation partition structure and the hydrogen unloading work platform (11) is provided with a hydrogen unloading partition structure; the hydrogenation partition structure is used to separate the formation of the first region and the second region, the hydrogen unloading partition structure is used to separate the formation of the third region and the fourth region, and the hydrogenation partition structure and the hydrogen unloading partition structure include a groove for accommodating the movement of the metal connecting rod (8).

8. The system according to any one of claims 1-5, characterized in that, The two ends of the installation cable (10) are connected to the hydrogen balloon (3) and the ballast (4) respectively by buckles.

9. The system according to any one of claims 1-5, characterized in that, The metal connecting rod (8) is a telescopic rod structure.

10. The system according to claim 5, characterized in that, The track (7) has a retractable sleeve structure for its support column. The retractable sleeve structure consists of an inner sleeve and an outer sleeve. The inner sleeve has several adjustment holes, and the outer sleeve has fixing holes. The inner sleeve and the outer sleeve are fixed together by pins or bolts. The support column is fixed to the ground by anchor bolts.

Images