Transferring and filling system of multi-tank large solid hydrogen storage device

Abstract

The invention discloses a transferring and filling system of a multi-tank large solid hydrogen storage device. The transferring and filling system mainly comprises a transferring subsystem, an overturning subsystem, a multi-stage filling subsystem and a filling working platform. The transfer subsystem comprises a trackless flatcar, a rail flatcar and a rail and is used for bearing and transferring the solid hydrogen storage devices in different forms. The overturning subsystem is used for enabling the solid hydrogen storage device to be overturned and switched between the transverse arrangement state and the longitudinal arrangement state and to be transferred between the trackless flat car and the rail flat car. The multi-stage filling subsystem comprises a first-stage transfer container, a second-stage transfer container and a third-stage transfer container which are sequentially connected from top to bottom and can be separated from one another. According to the invention, integral transfer, sealed quantitative filling and efficient continuous operation of the multi-tank large solid hydrogen storage device are realized.

Description

Technical Field

[0001] This invention relates to the field of solid-state hydrogen storage technology, specifically to a transfer and filling system for a large magnesium-based solid-state hydrogen storage device adapted to a multi-tank structure, suitable for batch filling of hydrogen storage materials for industrial-grade solid-state hydrogen storage devices. Background Technology

[0002] Solid-state hydrogen storage technology has become one of the core technologies in the field of hydrogen energy storage and application due to its advantages such as high hydrogen storage density, good safety, and long service life. Among them, magnesium-based hydrogen storage materials are widely used in large-scale hydrogen storage equipment due to their high hydrogen storage capacity and low cost. However, these materials are extremely sensitive to impurities such as oxygen and moisture, and are prone to oxidation or hydrolysis reactions that can lead to failure of hydrogen storage performance.

[0003] Large-scale solid hydrogen storage equipment typically adopts a multi-tank combination structure, such as 10 to 60 solid hydrogen storage tanks integrated into the same device frame, thus forming a large-scale multi-tank solid hydrogen storage device. This device is very large in size and weight, which brings many technical challenges to equipment transportation and hydrogen storage material filling.

[0004] Current filling operations require disassembling the connecting structure of multiple tanks, removing each tank individually, transporting it to the filling station, and then reassembling it after filling. This process is cumbersome and time-consuming. The transport of large solid-state hydrogen storage devices lacks specialized equipment adapted to different placement configurations. Switching between horizontal (transportation) and vertical (filling) configurations is difficult, and the device's positioning stability is insufficient during filling. The quantitative delivery accuracy of hydrogen storage materials is low, easily leading to underfilling or overfilling of individual tanks. Furthermore, powdered materials are prone to clogging during transport, affecting filling efficiency.

[0005] In summary, the existing technology lacks an integrated system that can realize the overall transportation, flexible form switching, and sealed quantitative filling of large multi-tank hydrogen storage devices, which limits the large-scale promotion and application of large magnesium-based solid hydrogen storage equipment. Summary of the Invention

[0006] The technical problems to be solved by this invention are: the inconvenience of transporting large solid hydrogen storage devices with multiple tanks, the difficulty of changing the form, the low filling efficiency, and the easy oxidation of hydrogen storage materials.

[0007] To address the aforementioned technical problems, this invention provides a transfer and filling system for a multi-tank large-scale solid hydrogen storage device. Each solid hydrogen storage device includes multiple solid hydrogen storage tanks, and the transfer and filling system includes: The transfer subsystem includes a trackless flatcar, a rail flatcar, and a track; the trackless flatcar is used to carry horizontally oriented solid hydrogen storage devices and can move freely; the rail flatcar is used to carry vertically oriented solid hydrogen storage devices and can move on the track. The flipping subsystem is used to flip and switch the solid hydrogen storage device between horizontal and vertical configurations, as well as to transfer it between trackless flatcars and tracked flatcars. A multi-stage filling subsystem is used to transfer hydrogen storage materials into a solid hydrogen storage device. The multi-stage filling subsystem includes a first-stage transfer container, a second-stage transfer container, and a third-stage transfer container that are connected from top to bottom and can be separated from each other. The filling platform is used to support the filling subsystem.

[0008] In some embodiments, a first-stage transfer container is used to dispense hydrogen storage material from a total hydrogen storage material warehouse and then transfer it to the ground where the filling work platform is located; the first-stage transfer container is configured such that when it is full of hydrogen storage material, the total weight of the container together with the hydrogen storage material is less than 50 kg.

[0009] In some embodiments, the capacity of the second-stage transfer container is greater than the sum of the capacities of the plurality of third-stage transfer containers; the capacity of the third-stage transfer container is slightly greater than the capacity of a single solid hydrogen storage tank.

[0010] In some embodiments, the filling work platform is provided with two raised platforms: a first platform and a second platform; The first work surface on the upper level is for operators to move around. The first work surface has a first hollow area, and the second-level transfer container is located in the first hollow area. The bottom of the second platform located on the lower level is higher than the vertically arranged solid hydrogen storage device. The second platform is used to support the third-stage transfer container. The second platform has a second hollow area, and the track of the transfer subsystem is located on the ground below the second hollow area.

[0011] In some embodiments, the multi-stage filling subsystem further includes a movable container support for carrying a third-stage transfer container to move on a second platform.

[0012] In some embodiments, the mobile container support is equipped with a weighing device.

[0013] In some embodiments, the multi-stage filling subsystem further includes a fixed container support for supporting and fixing a second-stage transfer container.

[0014] In some embodiments, the movable container support is positioned next to the fixed container support. The inlet of the third-stage transfer container is higher than the outlet of the second-stage transfer container.

[0015] In some embodiments, a screw feeder is connected between the inlet of the third-stage transfer container and the outlet of the second-stage transfer container.

[0016] In some embodiments, the multi-stage filling subsystem further includes a trolley and a crane, the trolley being used to carry and move multiple first-stage transfer containers, and the crane being used to lift the first-stage transfer containers above the second-stage transfer containers.

[0017] The beneficial effects of this invention are: it enables the overall transfer, sealed quantitative filling, and efficient continuous operation of large-scale solid hydrogen storage devices with multiple tanks. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structural layout of the transfer and filling system provided in a preferred embodiment of the present invention.

[0019] Figure 2 yes Figure 1 The diagram shows a front view of the overall structure of the transfer and filling system.

[0020] Figure 3 yes Figure 1 The diagram shows a top view of the overall structure of the transfer and filling system.

[0021] Figure 4 yes Figure 1 A schematic diagram of the connection structure of a multi-stage filling subsystem.

[0022] Figure 5 This is a flow chart of the transfer and filling system provided by the present invention.

[0023] Figure 6 This is a flowchart of the filling process of the transfer and filling system provided by the present invention.

[0024] The meanings of the reference numerals in the above figures are as follows: 100 Solid-state hydrogen storage device 110 Device Frame 120 Solid hydrogen storage tank 100a Vertical configuration 100b Horizontal configuration 210 Trackless flatcar 220 tram 230 orbits 310 Tilting device 410 First-level transfer container 411 Valve 420 Secondary Transfer Container 421 Valve 430 Third-level transfer container 431 Valve 432 Valve 440 Screw Feeder 450 Fixed Container Support 460 Mobile Container Stand 470 weighbridge 510 stroller 521 Overhead frame 522 Crane crossbeam 523 Lifting Kit 610 Platform Support 620 Upper countertop 621 First hollowed-out area 630 Lower countertop 631 Second hollowed-out area 640 steps Detailed Implementation The terms "first," "second," and similar words used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. In the description of this patent, unless otherwise stated, "a plurality of" means two or more.

[0025] In the description of this patent, words such as "comprising" or "having" mean that the elements or objects preceding "comprising" or "having" cover the elements or objects listed after "comprising" or "having" and their equivalents, and do not exclude other elements or objects.

[0026] In the description of this patent, when an element is referred to as being "fixed to / mounted on (or similarly)" another element, it can be directly on the other element or there may be intervening elements. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intervening elements. Conversely, when an element is referred to as being "directly on" another element, there are no intervening elements.

[0027] In the description of this patent, the terms "front", "rear", "upper", "lower", "left", "right", "horizontal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "clockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0028] This invention provides a system for filling large magnesium-based solid hydrogen storage devices with multiple tanks. The system reduces manual operation, is highly versatile, and meets the requirements for filling safety.

[0029] Figure 1 The right side of the image shows a large-scale solid-state hydrogen storage device with multiple tanks. This solid-state hydrogen storage device 100 mainly consists of a device frame 110 and multiple solid-state hydrogen storage tanks 120. Preferably, each solid-state hydrogen storage device 100 consists of 16 solid-state hydrogen storage tanks 120, and the arrangement of these solid-state hydrogen storage tanks 120 within the device frame 110 can be determined by… Figure 2 As shown on the right, the solid hydrogen storage device 100 is arranged in a horizontal configuration 100b. Each solid hydrogen storage tank 120 has a circular cross-section, and their close arrangement makes the solid hydrogen storage device 100 arranged in a vertical configuration 100a have a small footprint.

[0030] The transfer and filling system provided in this patent is used to fill the aforementioned multi-tank large solid hydrogen storage device with solid hydrogen storage materials, and is particularly suitable for filling magnesium-based solid hydrogen storage powder materials. The transfer and filling system mainly consists of a solid hydrogen storage device transfer subsystem, a solid hydrogen storage device flipping subsystem, a multi-stage filling subsystem, a filling container transfer subsystem, and a filling work platform, as well as some supporting auxiliary systems.

[0031] (a) Solid-state hydrogen storage device transfer subsystem The transfer subsystem mainly consists of a trackless flatcar 210, a rail flatcar 220, and a track 230.

[0032] The trackless flatcar 210 is used to carry the horizontally positioned solid hydrogen storage device 100b and for internal transport within the workshop. The trackless flatcar 210 has a turning function on the spot, allowing it to move freely without being limited by turning radius. The trackless flatcar 210 can adapt to long-distance transport needs both inside and outside the workshop, such as transporting hydrogen from one workshop to another. The solid hydrogen storage tanks 120 are several meters high, which significantly lowers their center of gravity when placed horizontally, meeting safe transport requirements. Figure 1 The trackless flatcar 210 shown is a simplified illustration. In practical applications, the trackless flatcar 210 can be a flatbed truck, etc.

[0033] The rail-guided flatcar 220 is used to carry the longitudinally positioned solid hydrogen storage device 100a and can move on the rails 230. The rails 230 are installed by ground laying or underground pre-embedding, covering the area from the loading / unloading area of ​​the rail-guided flatcar 220 to the area below the filling platform, forming a closed-loop transfer path. It supports cross-track switching and can self-lock during operation. Preferably, the rail-guided flatcar 220 can be an electric AGV, which moves slowly but smoothly along the rails, ensuring the safe arrival of the solid hydrogen storage device 100 below the filling platform.

[0034] (ii) Solid-state hydrogen storage device switching subsystem The tipping subsystem employs a dual-lane, single-tip loading and unloading tipper or an overhead crane adapted to load and height requirements; these devices represent existing technology. Figure 1The diagram only uses the flipping device 310 for simplicity. The flipping subsystem supports remote control operation and can achieve a 90° flip of the solid hydrogen storage device 100, completing the switching between the vertical configuration 100a and the horizontal configuration 100b.

[0035] The solid-state hydrogen storage device 100, in its longitudinal configuration 100a and transverse configuration 100b, is placed at two workstations. The lower part of the flipping subsystem can respectively connect to a rail-guided flatcar 220 and a trackless flatcar 210, simultaneously enabling the transfer of the solid-state hydrogen storage device 100 between the two types of flatcars, thus solving the technical problem that large solid-state hydrogen storage devices cannot be flipped independently. Before filling, the flipping subsystem picks up the solid-state hydrogen storage device 100 from the trackless flatcar 210, flips it to a longitudinal position, and then places it on the rail-guided flatcar 220.

[0036] (III) Filling work platform The entire filling platform mainly consists of platform supports 610, an upper platform 620, a lower platform 630, and steps 640, all of which are made of steel. The filling platform uses four thick platform supports 610, with the bottom fixed to the workshop floor. The upper part connects and supports the upper platform 620 and the lower platform 630, making the entire filling platform a two-tiered structure. The area of ​​the upper platform 620 is slightly smaller than that of the lower platform 630. Operators can access the lower platform 630 from the ground, and then from the lower platform 630 to the upper platform 620 via steps 640.

[0037] The lower platform 630 is more than 5 meters above the ground, exceeding the total height of the vertically arranged solid hydrogen storage unit 100 plus the rail-guided flatcar 220. A fence surrounds the lower platform 630 to ensure the safety of operators. The lower platform 630 has a large solid area to support the entire multi-stage filling subsystem and allow the moving parts of the filling subsystem to move on it.

[0038] The lower platform 630 has a second hollow area 631 in its center. Its area is small, similar to the area of ​​the top surface of the solid hydrogen storage device 100. A track 230 passes over the ground corresponding to the second hollow area 631. Figure 3 As shown, the solid hydrogen storage device 100 is moved below the second hollowed-out area 631 by a rail-mounted flatcar 220. The feed pipe of the multi-stage filling subsystem passes through the second hollowed-out area 631 and connects to the solid hydrogen storage tank 120, where solid hydrogen storage material is then filled. Where space and height permit, keeping the solid hydrogen storage tank 120 vertical during the filling process is the most direct and least prone to clogging.

[0039] The upper platform 620 is positioned more than two meters above the lower platform 630, providing a space for operators to stand, move around, and operate the equipment. A perimeter fence surrounds the upper platform 620 to ensure operator safety. A large first openwork area 531 is located in the center of the upper platform 620, resulting in a relatively small solid platform area. For ease of operation, no guardrail is installed on the solid platform area. To ensure operator safety, the width of this solid platform area must be greater than 1 meter. The total height of the filling subsystem is approximately 4 meters, with its base mounted on the lower platform 630 and its main body extending through the first openwork area 621 of the upper platform 620. For ease of operation and maintenance, the fixed portion of the filling subsystem is located at one corner of the first openwork area 621, such as... Figure 3 As shown.

[0040] (iv) Multi-stage filling subsystem The multi-stage filling subsystem is used to transfer solid hydrogen storage materials into a solid hydrogen storage device, and it is the focus of this patent. The multi-stage filling subsystem includes a first-stage transfer container 410, a second-stage transfer container 420, and a third-stage transfer container 430, which are connected sequentially from top to bottom and can be separated from each other. The containers are sealed and controlled by valves, such as... Figure 4 As shown.

[0041] The first-stage transfer container 410 is an intermediate material storage bin used to dispense hydrogen storage materials from the central hydrogen storage material warehouse. The central warehouse stores a large quantity of solid hydrogen storage materials, which are first filled into the first-stage transfer container 410, then sealed and transported to the vicinity of the filling work platform. Figure 2 As shown. The total weight of each first-stage transfer container 410 after being filled with hydrogen storage material is less than 50 kg, making it easy for a single operator to handle. The first-stage transfer containers 410 can be transported using a trolley 510, which is designed to accommodate six first-stage transfer containers 410.

[0042] like Figure 4 The top of the first-stage transfer container 410 is flat, with two openings serving as lifting lugs for the crane's hook to grip. The upper section of the first-stage transfer container 410 is a tall cylindrical shape, while the lower section has a conical bottom for easy unloading. The bottom is the interface with the second-stage transfer container 420, which is opened and sealed by a valve 411. During handling and transfer, the first-stage transfer container 410 is flipped upside down. Figure 4 The top of the container shown becomes the bottom of the container, which then contacts the trolley 510.

[0043] The second-stage transfer container 420 uses a buffer hopper, which cannot be filled simultaneously with the discharge. Therefore, the first-stage transfer container 410 first fills the second-stage transfer container 420. The second-stage transfer container 420 is located in one corner of the first hollow area 621 of the filling platform via a fixed container support 450. Figure 3 As shown.

[0044] The upper section of the second-stage transfer container 420 is a flattened cylindrical shape with a valve 421 at the top. The lower section has a conical bottom with a large volume for easy material unloading, and a screw-driven feeding device 440 is connected to the bottom. The volume of the second-stage transfer container 420 is more than 10 times that of the first-stage transfer container 410 and several times that of the third-stage transfer container 430. The second-stage transfer container 420 can store solid hydrogen storage materials in advance to ensure continuous feeding.

[0045] The fixed container support 450 is nearly two meters high, with its bottom located on the lower platform 630 and its top close to the upper platform 620. A portion of the lower conical section of the second-stage transfer container 420 is embedded in the fixed container support 450. Because the fixed container support 450 is relatively high, it provides ample operating space for the screw feeder 440. Figure 4 As shown.

[0046] The third-stage transfer container 430 employs a movable discharge device, supported by a movable container bracket 460 on the lower platform 630 of the filling work platform. The upper section of the third-stage transfer container 430 is cylindrical, while the lower section has a conical bottom for easy material discharge. The capacity of the third-stage transfer container 430 is slightly larger than that of a single solid hydrogen storage tank 120, ensuring that a single docking can meet the filling requirements of a single solid hydrogen storage tank after being filled with solid hydrogen storage material. The third-stage transfer container 430 has an interface and valve 431 at the top that connects to the discharge port of the screw pusher device 440, and a lower valve 432 that connects directly to the solid hydrogen storage tank 120 or via a hose.

[0047] Figure 4 Only one third-level transfer container 430 is shown in the figure. In actual use, the filling subsystem can include multiple third-level transfer containers 430. While one of them is receiving the material from the second-level transfer container 420, the others are simultaneously filling multiple solid hydrogen storage tanks 120, thereby improving the overall filling efficiency.

[0048] To save vertical space, a screw feeder 440 is connected between the second-stage transfer container 420 and the third-stage transfer container 430. Figure 4In the scenario shown, the height of the outlet of the second-stage transfer container 420 is lower than the height of the inlet of the third-stage transfer container 430. The solid hydrogen storage material cannot flow from the second-stage transfer container 420 into the third-stage transfer container 430 under its own gravity. A screw feeder 440 is used to solve this problem. The screw feeder 440 is driven by a motor to rotate the screw, propelling the material in the device forward. Furthermore, the outlet of the screw feeder 440 is equipped with a pneumatic valve, serving as an auxiliary power source for filling the solid hydrogen storage tank 120 from the third-stage transfer container 430.

[0049] A weighbridge 470 is installed at the bottom of the mobile container support 460 for weighing. The weighbridge 470 is linked to the pneumatic valve at the discharge port of the screw feeder 440. The second-stage transfer container 420 fills the third-stage transfer container 430 with material. As the solid hydrogen storage material in the third-stage transfer container 430 gradually increases, the weight measured by the weighbridge 470 also gradually increases. When the preset full weight value is reached, the pneumatic valve of the screw feeder 440 automatically closes, achieving quantitative feeding and ensuring filling accuracy.

[0050] The amount of solid hydrogen storage material pre-loaded to full weight is just enough to fill one solid hydrogen storage tank 120. When the third-stage transfer container 430 fills the solid hydrogen storage tank 120, the amount of hydrogen storage material in the third-stage transfer container 430 gradually decreases, and the weight weighed by the weighbridge 470 gradually decreases. When the weight decreases to the pre-loaded empty weight, the pneumatic valve of the screw feeder 440 automatically closes, achieving quantitative feeding and ensuring filling accuracy.

[0051] If there is sufficient height, the third-stage transfer container 430 can be connected directly below the second-stage transfer container 420, either through direct docking or via a flexible hose. This eliminates the need for the screw pusher device 440, but requires further heightening of the fixed container support 450. This raises the center of gravity of the second-stage transfer container 420, increasing the risk of tipping. Furthermore, since the second-stage transfer container 420 is fixed while the third-stage transfer container 430 needs frequent movement, operation is inconvenient if the second-stage transfer container 420 is directly below the third-stage transfer container 430. Figure 4 It is preferable to place the second-level transfer container 420 next to the third-level transfer container 430.

[0052] During the transfer and filling of hydrogen storage materials, it is necessary to isolate them from air to prevent chemical reactions between oxygen and water in the air and the hydrogen storage materials. An argon protection system is used to replace and isolate the air. The argon protection system (not shown in the figure) includes a vacuum pump and an argon filling device. The argon filling device is connected to the interior of the first-stage transfer container 410, the second-stage transfer container 420, the third-stage transfer container 430, and the solid hydrogen storage tank 120 through a breather. It is used to evacuate and replace the air inside the above containers before filling, and to provide argon protection throughout the filling process to prevent oxidation of the hydrogen storage materials.

[0053] (v) Container Transfer Subsystem The container transfer subsystem is used to transfer the first-stage transfer container 410, and includes a trolley 510 and a traveling trolley 520. The trolley 520 is a simple handcart with a strong load-bearing capacity. The total weight of each first-stage transfer container 410 when fully filled with hydrogen storage material is close to 50 kg, and the total weight of the six containers is two to three hundred kg, which the trolley 510 can bear.

[0054] The overhead crane consists of a crane frame 521, a crane crossbeam 522, and a lifting assembly 523. The crane frame 521 is made of steel. The crane crossbeam 522 is located at the top of the crane frame 521 and can move along a set of opposite sides of the crane frame 521. The lifting assembly 523 is installed below the crane crossbeam 522 and can move along the crane crossbeam 522. In this way, the lifting assembly 523 can reach any position within its working range.

[0055] like Figure 1 As shown, the overhead crane frame 521 is set around the periphery of the filling work platform support 610. When the overhead crane beam 522 reaches the end of the overhead crane frame 521, the lifting kit 523 descends to near the ground. The operator picks up the first-stage transfer container 410 from the ground trolley 510, inverts it, and suspends it on the hook at the bottom of the lifting kit 523. As the lifting kit 523 rises, it directly lifts the first-stage transfer container 410 directly above the second-stage transfer container 420.

[0056] In other embodiments, the crane may employ other lifting equipment, such as a combination of a cantilever crane and a boom. The boom can serve as the propulsion force for the moving container support.

[0057] The following section details the operation steps and workflow of the transfer and filling system for a multi-tank large-scale solid hydrogen storage device. The transfer operation procedure for the solid hydrogen storage device can be found in [link to relevant documentation]. Figure 5 The filling operation procedures for the multi-stage filling subsystem and solid-state hydrogen storage device are detailed in [link to documentation]. Figure 6 .

[0058] (I) Transfer Operation Procedures for Solid-State Hydrogen Storage Devices Step 1.1: The solid hydrogen storage device arrives at the flipping station.

[0059] The solid hydrogen storage units awaiting filling are transferred to the tilting station using a trackless flatcar, specifically below a dual-lane, single-tilt loading and unloading tilting machine, where they await tilting. The solid hydrogen storage units are transferred between the workshop and other locations using a trackless flatcar that can turn in place, as the units are horizontal on the trackless flatcar.

[0060] Step 1.2: Switch the solid hydrogen storage device to a vertical configuration.

[0061] At the flipping station, the solid hydrogen storage unit is moved from the trackless flatcar by a dual-lane, single-flip loading and unloading flipper. After flipping, it is placed in a longitudinal position and then fixed on a rail-mounted flatcar. The solid hydrogen storage unit is transferred within the workshop via rail-mounted flatcars because the solid hydrogen storage unit needs to be kept in a longitudinal position during filling, and rail-mounted flatcars offer greater stability.

[0062] Step 1.3: The solid hydrogen storage device arrives at the filling work platform.

[0063] The rail-guided flatcar reaches the bottom of the filling work platform along the track, aligns as much as possible with the second hollow area, and then keeps the rail-guided flatcar in a self-locking state to fix it in that position.

[0064] Step 1.4: Provide gas protection for the solid hydrogen storage tank.

[0065] Under argon protection, the operator removes the structure that interferes with the filling process from the solid hydrogen storage tank, uses a vacuum pump to evacuate the solid hydrogen storage tank, replenishes argon, and then screws plugs on the hydrogen inlet and outlet and the feed inlet of the tank.

[0066] (II) Filling operation steps of multi-stage filling subsystem Step 2.1: Place the transfer hopper in place.

[0067] Place several (up to 6) primary transfer containers on a trolley and push it to the ground of the filling platform. Use a crane to lift one of the primary transfer containers above the secondary transfer container. The operator connects the discharge port of the primary transfer container to the inlet of the secondary transfer container. Both containers have normally closed pneumatic ball valves, which need to be connected to air hoses.

[0068] Step 2.2: Fill the buffer hopper.

[0069] After the pneumatic ball valve is vented, the solid hydrogen storage material in the first-stage transfer container falls into the second-stage transfer container. The first-stage transfer container has a viewing window near the outlet. When it is observed that all the solid hydrogen storage material in this container has disappeared, the pneumatic ball valves at the outlet of the first-stage transfer container and the inlet of the second-stage transfer container are closed, disconnecting them.

[0070] The empty first-stage transfer container is transported by a crane to a trolley below the filling platform. This process is repeated until the second-stage transfer container is filled with solid hydrogen storage material.

[0071] Step 2.3: Fill the removable container.

[0072] The third-stage transfer container is placed on the mobile container support. The operator connects the discharge port of the screw conveyor to the inlet of the third-stage transfer container. Both ports have normally closed pneumatic ball valves, which need to be connected to air hoses. After venting, the solid hydrogen storage material in the second-stage transfer container is transferred to the third-stage transfer container via the screw conveyor. When the feed rate to the third-stage transfer container reaches the set value, the pneumatic valve at the discharge port of the screw conveyor automatically closes, and the second-stage transfer container stops feeding material into the third-stage transfer container.

[0073] (III) Filling Operation Procedures for Solid-State Hydrogen Storage Devices Step 3.1: Fill the solid hydrogen storage tank with hydrogen.

[0074] The third-stage transfer container is moved above the solid-state hydrogen storage unit using a crane. The operator connects the outlet of the third-stage transfer container to the inlet of a single solid-state hydrogen storage tank within the unit. The outlet valve of the third-stage transfer container is opened to fill the solid-state hydrogen storage tank. Once the third-stage transfer container is empty, its valve is closed, disconnecting it from the inlet of the solid-state hydrogen storage tank.

[0075] Step 3.2: Repeat step 3.1 above until all solid hydrogen storage tanks of the solid hydrogen storage device are filled with solid hydrogen storage material.

[0076] Step 3.3: Return the solid hydrogen storage device to its original position.

[0077] After filling is completed, the rail-guided flatcar moves the longitudinally positioned solid hydrogen storage unit to the lower part of the dual-lane single-tumble loading and unloading tilting machine, turning the longitudinally positioned solid hydrogen storage unit into a horizontally positioned position. Then it is placed on the trackless flatcar, and the parts removed from the solid hydrogen storage unit before filling are reinstalled. After that, the filled solid hydrogen storage unit is transported to the warehouse or the next work station.

[0078] Compared with the prior art, the beneficial effects of the present invention are as follows: Achieve overall transfer and form switching of large multi-tank units: Through the cooperation of trackless flatcars, rail flatcars and tilting subsystems, the form switching and workstation transfer of horizontal (transfer) and vertical (filling) can be completed without disassembling the tank structure of the solid hydrogen storage unit, which greatly simplifies the process and shortens the operation time.

[0079] Improve filling efficiency and accuracy: Adopt a three-stage transfer container design for graded feeding. The second-stage container buffers raw materials to ensure continuous operation, while the third-stage container has a capacity adapted to a single tank and is equipped with weighing interlock control to achieve precise quantitative filling. The screw pusher device solves the problem of material blockage.

[0080] Ensuring the performance of solid hydrogen storage materials: The argon protection system prevents oxidation throughout the filling process, avoiding hydrolysis or oxidation of magnesium-based solid hydrogen storage materials due to contact with air, thus ensuring stable hydrogen storage performance.

[0081] Easy and safe to operate: The first-stage transfer container is lightweight (total weight ≤50kg), which, together with the trolley and crane, reduces the intensity of manual labor; the docking of each container adopts a standardized pneumatic ball valve, which is simple to operate and has a reliable seal; the self-locking design of the rail flatcar ensures the stability of the filling process.

[0082] High versatility: It can be adapted to large solid hydrogen storage devices with different numbers of tanks. The track layout and the type of flipping sub-equipment can be flexibly adjusted to adapt to different workshop layouts and space conditions.

[0083] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A transfer and filling system for a multi-tank large-scale solid hydrogen storage device, wherein each solid hydrogen storage device comprises multiple solid hydrogen storage tanks, characterized in that, The transfer and filling system includes: The transfer subsystem includes a trackless flatcar, a rail flatcar, and a track; the trackless flatcar is used to carry the horizontally positioned solid hydrogen storage device and can move freely; the rail flatcar is used to carry the vertically positioned solid hydrogen storage device and can move on the track. A flipping subsystem is used to flip and switch the solid hydrogen storage device between horizontal and vertical configurations and to transfer it between the trackless flatcar and the tracked flatcar. A multi-stage filling subsystem is used to transfer hydrogen storage material into the solid hydrogen storage device; the multi-stage filling subsystem includes a first-stage transfer container, a second-stage transfer container, and a third-stage transfer container that are connected from top to bottom and can be separated from each other; A filling platform, which is used to support the filling subsystem.

2. The transfer and filling system for a multi-tank large-scale solid hydrogen storage device according to claim 1, characterized in that, The first-stage transfer container is used to dispense hydrogen storage material from the main hydrogen storage material warehouse and then transfer it to the ground where the filling work platform is located; the first-stage transfer container is configured such that when it is full of hydrogen storage material, the total weight of the container and the hydrogen storage material is less than 50 kg.

3. The transfer and filling system for a multi-tank large-scale solid hydrogen storage device according to claim 1, characterized in that, The capacity of the second-stage transfer container is greater than the sum of the capacities of the plurality of third-stage transfer containers; the capacity of the third-stage transfer container is slightly greater than the capacity of a single solid hydrogen storage tank.

4. The transfer and filling system for a multi-tank large-scale solid hydrogen storage device according to claim 1, characterized in that, The filling platform is equipped with two raised platforms: a first platform and a second platform. The first platform located on the upper layer is for operators to move around. The first platform has a first hollow area, and the second-level transfer container is located in the first hollow area. The bottom of the second platform located on the lower layer is higher than the vertically arranged solid hydrogen storage device, and the second platform is used to support the third-stage transfer container; The second platform has a second hollow area, and the track of the transfer subsystem is provided on the ground below the second hollow area.

5. The transfer and filling system for a multi-tank large-scale solid hydrogen storage device according to claim 4, characterized in that, The multi-stage filling subsystem also includes a movable container support, which is used to support the third-stage transfer container to move on the second platform.

6. The transfer and filling system for a multi-tank large-scale solid hydrogen storage device according to claim 5, characterized in that, The mobile container support is equipped with a weighing device.

7. The transfer and filling system for a multi-tank large-scale solid hydrogen storage device according to claim 4, characterized in that, The multi-stage filling subsystem also includes a fixed container support, which is used to support and fix the second-stage transfer container.

8. The transfer and filling system for a multi-tank large-scale solid hydrogen storage device according to claim 6, characterized in that, The movable container support is positioned next to the fixed container support. The inlet of the third-stage transfer container is higher than the outlet of the second-stage transfer container.

9. The transfer and filling system for a multi-tank large-scale solid hydrogen storage device according to claim 8, characterized in that, A screw feeder is connected between the inlet of the third-stage transfer container and the outlet of the second-stage transfer container.

10. The transfer and filling system for a multi-tank large-scale solid hydrogen storage device according to claim 2, characterized in that, The multi-stage filling subsystem also includes a trolley and a crane. The trolley is used to carry and move multiple first-stage transfer containers, and the crane is used to lift the first-stage transfer containers above the second-stage transfer containers.

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