A hydrogen fuel cell vehicle waste high-pressure hydrogen storage tank hydrogen recovery device

Abstract

The present application relates to hydrogen tank recycling technical field, specifically to a kind of hydrogen fuel cell vehicle abandoned high-pressure hydrogen storage tank hydrogen recovery device, including main body, the baffle is rotatably connected in the main body;The support is provided at the bottom of the main body, the water tank is provided in the support, the docking interface that is connected with water tank is opened in the bottom of the main body, the drilling assembly is provided in the docking interface, the clamping assembly is provided at the position of the bottom of the main body inboard close to docking interface, the docking unit is provided in the top of the main body inboard;The docking unit includes mounting table.The main body and baffle, drive motor are linked to form airtight cavity, cooperate with the double sealing of docking pipe rubber plate and clamping rod, improve safety;Clamping assembly and docking unit are linked to adapt multi-specification tank body, and strong universality;Water tank, collection tank and drilling assembly build closed loop, realize hydrogen energy and water resource cyclic reuse, give consideration to environmental protection and economy.

Description

Technical Field

[0001] This invention relates to the field of hydrogen tank recycling technology, and in particular to a hydrogen recovery device for waste high-pressure hydrogen storage tanks from hydrogen fuel cell vehicles. Background Technology

[0002] With the popularization of hydrogen fuel cell vehicles, carbon fiber high-pressure hydrogen storage tanks are gradually entering their scrap cycle. The treatment and safe disposal of their residual hydrogen has become a key bottleneck in the industry's closed loop. Existing technologies are unable to balance safety, economy, and adaptability, and cannot meet the needs of small and medium-sized dismantling companies.

[0003] Currently, some companies still use a simple method of natural dissipation in open spaces plus manual cutting. Hydrogen is prone to local accumulation, which can create an explosion hazard. The residual hydrogen adsorbed by the carbon fiber layer cannot be completely removed, which can cause safety accidents and waste hydrogen energy.

[0004] While closed-loop processing technology can mitigate some risks, it has significant drawbacks. Inert gas protection equipment is expensive, and the tank opening requires manual adjustment, making operation cumbersome. Underwater cutting technology requires large facilities, occupies a large area, and has difficulties in draining water from the tank, resulting in redundant processes. Summary of the Invention

[0005] This invention provides a hydrogen recovery device for waste high-pressure hydrogen storage tanks in hydrogen fuel cell vehicles, which solves the problems mentioned in the background art. The prior art involves natural dissipation followed by cutting, which poses a risk of flammability and explosion and wastes hydrogen energy. The other closed technology is costly and cumbersome to operate.

[0006] To solve the above-mentioned technical problems, one technical solution adopted by the present invention is: to provide a hydrogen recovery device for waste high-pressure hydrogen storage tanks of hydrogen fuel cell vehicles, including a main body, wherein a baffle is rotatably connected inside the main body; The main body is provided with a support at the bottom, and a water tank is provided inside the support. A docking interface communicating with the water tank is provided on the bottom inner side of the main body. A drilling assembly is provided inside the docking interface. A clamping assembly is provided on the bottom inner side of the main body near the docking interface. A docking unit is provided on the top inner side of the main body. The docking unit includes a mounting platform, inside which a connecting pipe is fixedly connected. The top end of the connecting pipe extends to the outside of the main body. The bottom of the mounting platform is connected to a top plate via an elastic element. A second sliding opening is provided through the bottom of the top plate. A first sliding opening is provided at the bottom of the mounting platform corresponding to the second sliding opening. A push rod is provided at the top of the top plate. The top end of the push rod extends into the interior of the mounting platform. A positioning seat is provided inside the mounting platform near the first sliding opening. A clamping rod is hinged inside the positioning seat. The bottom end of the clamping rod extends through the first and second sliding openings into the interior of the main body.

[0007] The present invention is further configured such that the outer wall of the baffle is provided with mating teeth near the top and bottom, a drive gear is rotatably installed inside the main body near the mating teeth, and a drive motor is provided outside the main body near the drive gear, with the output end of the drive motor connected to the drive gear.

[0008] The invention is further configured such that the drilling assembly includes a fixing frame connected to the inner wall of the interface, an installation cylinder is slidably installed inside the fixing frame, a second drive motor is provided at the top inner side of the installation cylinder, the output end of the second drive motor extends to the outside of the installation cylinder and is connected to a drill bit, and a first telescopic rod is provided at the bottom inner side of the fixing frame, the top end of the first telescopic rod is connected to the inner wall of the installation cylinder.

[0009] The present invention is further configured such that a first connection port is provided at the top of the connecting pipe near the top position, a second connection port is provided at the top of the connecting pipe, a water supply pipe is provided outside the water tank, the top of the water supply pipe is connected to the first connection port via a flexible hose, and a collection tank is provided outside the main body, the top of the collection tank is connected to the second connection port via a flexible hose.

[0010] The present invention is further configured such that a pushing component is provided on the top of the main body, the bottom telescopic end of the pushing component passes through the main body and is fixedly connected to the mounting platform, the bottom of the mounting platform is symmetrically provided with limit openings, the limit openings are slidably connected with limit rods, and the top end of the limit rods is fixedly connected to the inner wall of the main body.

[0011] The invention is further configured such that a slot is provided on the outer wall of one end of the push rod located inside the mounting platform, and a pressing groove is provided on the outer wall of the slot; one end of the clamping rod located inside the mounting platform extends into the slot; a connecting bolt is provided on the outer wall of the one end of the clamping rod located inside the slot; and the connecting bolt extends into the pressing groove and the two are slidably connected.

[0012] The present invention is further configured such that the bottom end of the connecting pipe passes through the top plate and is slidably connected thereto, the bottom end of the connecting pipe is provided with a tapered connecting joint, and a rubber plate is provided on the outer wall of the connecting pipe near the connecting joint.

[0013] The present invention is further configured such that the clamping assembly includes a fixed platform fixedly connected to the inner wall of the main body, the top of the fixed platform is provided with an installation groove, a clamping plate is slidably connected inside the installation groove, a telescopic rod II is provided inside the installation groove, and the output end of the telescopic rod II is connected to the clamping plate.

[0014] The beneficial effects of the hydrogen recovery device for the waste high-pressure hydrogen storage tank of a hydrogen fuel cell vehicle according to the present invention are as follows: 1. The main body and the baffle form a core sealed foundation. The drive motor, through the meshing of the drive gear and the mating teeth on the outer wall of the baffle, enables the smooth opening and closing of the baffle. After closing, it fits tightly with the main body to form a sealed processing chamber, blocking the path of hydrogen diffusion outward and completely avoiding the risk of explosion caused by local hydrogen accumulation during traditional open-site processing. Simultaneously, the rubber plate on the outer wall of the docking unit flexibly fits against the tank opening, and the clamping rod firmly holds the tank opening, forming a double-sealed structure. The deformable nature of the rubber plate can fill tiny gaps in the tank opening, further preventing hydrogen leakage at the docking point. Combined with the fully sealed processing procedure, this significantly improves the overall operational safety.

[0015] 2. The clamping assembly, through the linkage of the fixed platform, mounting groove, telescopic rod II, and clamping plate, allows the telescopic rod II to push the clamping plate to slide along the mounting groove. This adaptively adjusts the clamping range according to the bottom dimensions of different hydrogen storage tank specifications, achieving stable fixation of various waste hydrogen storage tanks without the need for manual adjustment of the clamping spacing. In the docking unit, elastic element I connects the mounting platform and the top plate. Working in conjunction with the push rod, clamping rod, positioning seat, connecting bolt, and extrusion groove, when the mounting platform moves downwards, the top plate is blocked by the tank opening. The push rod extends into the mounting platform, and the extrusion groove extrudes the connecting bolt, driving the clamping rod to rotate around the positioning seat as an axis. This achieves adaptive clamping of the outer wall of the tank opening, and the clamping force increases synchronously with the downward depth of the mounting platform. This adapts to tank opening structures of different diameters and wall thicknesses. The deformation capability of the rubber plate further expands the tank opening adaptation range, allowing the device to handle various specifications of hydrogen storage tanks without replacing dedicated docking components, demonstrating extremely high versatility.

[0016] 3. The water tank is connected to the connecting pipe at port one via a water supply pipe and hose, and the collection tank is connected to the connecting pipe at port two via a hose, forming a closed-loop system of "water injection and hydrogen discharge - hydrogen recovery - water return". When water is injected into the tank, the density advantage of water completely compresses and discharges the residual hydrogen. The discharged hydrogen is transported to the collection tank for storage via the connecting pipe and port two, avoiding the waste caused by the direct loss of hydrogen energy in traditional treatment methods, and realizing the recovery and reuse of residual hydrogen energy. After the hydrogen is collected, the drilling assembly drills a hole in the bottom of the tank through the linkage of the fixing frame, mounting cylinder, telescopic rod one, drive motor two and drill bit. The water in the tank flows back to the water tank through the drilled hole and the connecting pipe, realizing the recycling and reuse of water resources, reducing wastewater discharge and water consumption costs, and taking into account both economic and environmental benefits. Attached Figure Description

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the following description is provided in conjunction with the accompanying drawings. Please provide a detailed explanation.

[0018] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] Figure 1 This is a three-dimensional structural diagram of a hydrogen recovery device for a waste high-pressure hydrogen storage tank of a hydrogen fuel cell vehicle according to the present invention. Figure 2 This is a diagram showing the configuration switching of a hydrogen recovery device for a high-pressure hydrogen storage tank in a hydrogen fuel cell vehicle according to the present invention. Figure 3 This is a cross-sectional view of a hydrogen recovery device for a high-pressure hydrogen storage tank in a hydrogen fuel cell vehicle, according to the present invention. Figure 4 This is a cross-sectional view of the drilling assembly of a hydrogen recovery device for a high-pressure hydrogen storage tank in a hydrogen fuel cell vehicle, according to the present invention. Figure 5 This is a cross-sectional view of the clamping assembly of a hydrogen recovery device for a waste high-pressure hydrogen storage tank of a hydrogen fuel cell vehicle according to the present invention. Figure 6 This is a cross-sectional view of the docking unit of a hydrogen recovery device for a waste high-pressure hydrogen storage tank of a hydrogen fuel cell vehicle according to the present invention. Figure 7 This is a diagram showing the separation of the docking unit of a hydrogen recovery device for a waste high-pressure hydrogen storage tank in a hydrogen fuel cell vehicle according to the present invention.

[0020] The following components are marked in the diagram: 1. Main body; 11. Drive gear; 12. Drive motor one; 13. Mulling interface; 14. Drilling assembly; 141. Fixing frame; 142. Mounting cylinder; 143. Telescopic rod one; 144. Drive motor two; 145. Drill bit; 15. Clamping assembly; 151. Fixing platform; 152. Mounting slot; 153. Telescopic rod two; 154. Clamping plate; 16. Bracket; 2. Baffle; 21. Mulling teeth; 3. Mulling unit; 31. Mounting platform 311. Positioning seat; 312. Slide opening one; 313. Limiting port; 32. Top plate; 321. Push rod; 322. Bayonet; 323. Extrusion groove; 33. Elastic element one; 34. Slide opening two; 35. Clamping rod; 351. Connecting bolt; 36. Limiting rod; 37. Pushing assembly; 38. Connecting pipe; 381. Connecting joint; 382. Rubber plate; 383. Connecting port one; 384. Connecting port two; 4. Water tank; 41. Water supply pipe; 5. Collection tank. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," and "right," 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 the invention and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a transmission connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also refer to the internal communication of two elements or the interaction between two elements.

[0023] Please see Figure 1 - Figure 7 A hydrogen recovery device for waste high-pressure hydrogen storage tanks of hydrogen fuel cell vehicles includes a main body 1, and a baffle 2 is rotatably connected inside the main body 1. The bottom of the main body 1 is provided with a support 16, the inside of the support 16 is provided with a water tank 4, the bottom inner side of the main body 1 is provided with a docking interface 13 that communicates with the water tank 4, the docking interface 13 is provided with a drilling assembly 14, the bottom inner side of the main body 1 is provided with a clamping assembly 15 near the docking interface 13, and the top inner side of the main body 1 is provided with a docking unit 3. The docking unit 3 includes a mounting platform 31. A connecting pipe 38 is fixedly connected inside the mounting platform 31. The top end of the connecting pipe 38 extends to the outside of the main body 1. A top plate 32 is connected to the bottom of the mounting platform 31 through an elastic element 33. A sliding opening 34 is provided through the bottom of the top plate 32. A sliding opening 312 is provided at the bottom of the mounting platform 31 corresponding to the sliding opening 34. A push rod 321 is provided at the top of the top plate 32. The top end of the push rod 321 extends into the mounting platform 31. A positioning seat 311 is provided inside the mounting platform 31 near the sliding opening 312. A clamping rod 35 is hinged inside the positioning seat 311. The bottom end of the clamping rod 35 extends into the main body 1 through the sliding opening 312 and the sliding opening 34.

[0024] The outer wall of the baffle 2 is provided with mating teeth 21 near the top and bottom. The main body 1 is rotatably mounted with a drive gear 11 near the mating teeth 21. The main body 1 is provided with a drive motor 12 near the drive gear 11. The output end of the drive motor 12 is connected to the drive gear 11.

[0025] By adopting the above technical solution, connection port 383 and water pipe 41 form a water injection circuit, and connection port 384 and collection tank 5 form a hydrogen recovery channel. The conical butt joint 381 and rubber plate 382 provide double sealing. The limiting rod 36 and limiting port 313 slide and guide, and the dual-axis layout ensures the vertical movement of the mounting platform 31 and guarantees the coaxiality error between the butt joint 38 and the tank opening. The spiral extrusion groove 323 of the push rod 321 drives the connecting bolt 351, converting linear motion into rotational clamping of the clamping rod 35. The elastic element 33 achieves adaptive pressure adjustment. The pre-pressurized top plate 32 of the elastic element 33 provides initial clamping force, and the downward movement of the push rod 321 drives the clamping rod 35 to swing around the positioning seat 311 as a fulcrum.

[0026] A connection port 383 is located near the top of the connecting pipe 38, and a second connection port 384 is located at the top of the connecting pipe 38. A water supply pipe 41 is installed outside the water tank 4, and the top of the water supply pipe 41 is connected to the first connection port 383 via a flexible hose. A collection tank 5 is installed outside the main body 1, and the top of the collection tank 5 is connected to the second connection port 384 via a flexible hose. A pushing component 37 is installed at the top of the main body 1, and the telescopic end of the pushing component 37 passes through the main body 1 and is fixedly connected to the mounting platform 31. A limit port 313 is symmetrically opened at the bottom of the mounting platform 31, and a limit rod 36 is slidably connected inside the limit port 313. The top of the limit rod 36 is fixedly connected to the inner wall of the main body 1. The push rod 321 has a bayonet 322 on its outer wall at one end inside the mounting platform 31. A compression groove 323 is formed on the outer wall of the bayonet 322. The clamping rod 35 extends into the bayonet 322 at one end inside the mounting platform 31. A connecting bolt 351 is provided on the outer wall of the clamping rod 35 at the end inside the bayonet 322. The connecting bolt 351 extends into the compression groove 323, and the two are slidably connected. The bottom end of the connecting pipe 38 passes through the top plate 32 and is slidably connected to it. A tapered connector 381 is provided at the bottom end of the connecting pipe 38. A rubber plate 382 is provided on the outer wall of the connecting pipe 38 near the connector 381.

[0027] By adopting the above technical solution, the connecting pipe 38 serves as both a water injection channel and a hydrogen recovery channel, simplifying the pipeline layout. The push rod 321-clamp rod 35 linkage mechanism automatically adjusts the clamping force according to the tank opening thickness, avoiding overload damage. The tapered connecting joint 381 and rubber plate 382 are suitable for various tank opening specifications, eliminating the need for manual adjustment of the seals.

[0028] The drilling assembly 14 includes a fixing frame 141 connected to the inner wall of the interface 13. An installation cylinder 142 is slidably mounted inside the fixing frame 141. A second drive motor 144 is located at the top inner side of the installation cylinder 142. The output end of the second drive motor 144 extends to the outside of the installation cylinder 142 and is connected to a drill bit 145. A first telescopic rod 143 is located at the bottom inner side of the fixing frame 141, and the top end of the first telescopic rod 143 is connected to the inner wall of the installation cylinder 142. The clamping assembly 15 includes a fixing platform 151 fixedly connected to the inner wall of the main body 1. An installation groove 152 is formed at the top of the fixing platform 151. A clamping plate 154 is slidably connected inside the installation groove 152. A second telescopic rod 153 is located inside the installation groove 152, and the output end of the second telescopic rod 153 is connected to the clamping plate 154.

[0029] By adopting the above technical solution, the clamping assembly 15 first pushes the clamping plate 154 to clamp the bottom of the tank through the telescopic rod 153, ensuring that the tank does not shift during drilling; then, the telescopic rod 143 of the drilling assembly 14 pushes the mounting cylinder 142 upward, so that the drill bit 145 contacts the tank and completes the drilling. The rigid fixation of the clamping assembly 15 provides reaction force support for drilling, avoiding tank shaking caused by drilling vibration; after drilling is completed, the clamping assembly 15 is released from constraint simultaneously, forming a timing coordination with the reset action of the drilling assembly 14, ensuring the continuity of operation.

[0030] Working principle and usage process of this invention: Start the drive motor 12. The output of the drive motor 12 drives the drive gear 11 to rotate. The drive gear 11 engages with the mating teeth 21 on the outer wall of the baffle 2, causing the baffle 2 to rotate and move, completely opening the internal processing space of the main body 1. This process achieves smooth opening and closing of the baffle 2 through gear transmission, which is more efficient than manual opening and closing. After closing, it can form a sealed space with the main body 1, avoiding the safety risks caused by hydrogen leakage from the source. Then, the waste high-pressure hydrogen storage tank is placed inside the main body 1 with the tank opening facing upwards, and the bottom of the tank is placed above the fixing platform 151 of the clamping assembly 15, completing the initial placement of the tank.

[0031] The telescopic rod 153 in the clamping assembly 15 is activated. The output end of the telescopic rod 153 pushes the clamping plate 154 to slide along the mounting groove 152 until the two clamping plates 154 symmetrically clamp the bottom of the tank. This clamping structure provides a stable driving force through the telescopic rod 153. The clamping plate 154 can adaptively adjust the clamping range according to the bottom size of the tank, adapting to different specifications of waste hydrogen storage tanks. No manual adjustment is required, greatly simplifying the operation process. At the same time, the firm bottom clamping can prevent the tank from shifting during subsequent operations, ensuring the stability of the processing process. After clamping is completed, the drive motor 12 rotates in reverse, driving the baffle 2 to reset and close, forming a completely sealed processing chamber inside the main body 1, further blocking the path of hydrogen diffusion outward.

[0032] The push assembly 37 at the top of the main body 1 is activated, and the telescopic end at the bottom of the push assembly 37 pushes the mounting platform 31 and its components downward as a whole. During the downward movement, the limiting rod 36 fixed to the inner wall of the main body 1 slides along the limiting port 313 at the bottom of the mounting platform 31. Through the cooperation and guidance of the limiting rod 36 and the limiting port 313, the mounting platform 31 is ensured to always move downward horizontally, avoiding deviation during the docking process and improving docking accuracy.

[0033] When the mounting platform 31 moves down to a certain height, the tapered connector 381 at the bottom of the connecting pipe 38 first aligns with the tank opening. As it continues to move down, the connector 381 embeds into the tank opening, and the edge of the tank opening fits tightly against the rubber plate 382 on the outer wall of the connecting pipe 38. The rubber plate 382 has good deformation capacity and can adapt to tank openings of different diameters, achieving a flexible seal between the tank opening and the connecting pipe 38. Compared to a rigid seal, this effectively improves the sealing effect and prevents hydrogen leakage at the connection point.

[0034] As the mounting platform 31 continues to move downwards, the top plate 32, blocked by the tank opening, cannot move downwards synchronously. The elastic element 33 between the mounting platform 31 and the top plate 32 is compressed, and the push rod 321 at the top of the top plate 32 gradually extends into the mounting platform 31. During the extension of the push rod 321, the extrusion groove 323 on its outer wall exerts a compressive force on the connecting bolt 351 at the end of the clamping rod 35. Since the clamping rod 35 is hinged inside the mounting platform 31 through the positioning seat 311, it cannot move as a whole, but can only rotate around the hinge point. The end of the clamping rod 35 located outside the mounting platform 31 gradually falls down with the extension of the push rod 321 until it comes into close contact with the outer wall of the tank opening. The deeper the push rod 321 extends, the greater the compressive force of the extrusion groove 323 on the connecting bolt 351, and the stronger the clamping force of the clamping rod 35 on the outer wall of the tank opening, forming an adaptive clamping structure. This structure can ensure the sealing stability of the tank opening and the connecting pipe 38, and can also adapt to tank openings of different wall thicknesses, improving the versatility of the device.

[0035] After the tank opening is sealed and clamped, water tank 4 supplies clean water through water pipe 41 and hose to connection port 383 of connecting pipe 38. The clean water is then injected into the tank through connecting pipe 38 and connector 381. Using water injection to discharge hydrogen utilizes the density advantage of water to gradually squeeze the residual hydrogen inside the tank upwards, avoiding localized hydrogen accumulation that could lead to an explosion. This method significantly reduces equipment costs compared to inert gas protection. The discharged hydrogen rises along connecting pipe 38 and is transported through connection port 384 and hose to collection tank 5 for storage, achieving the recovery and reuse of residual hydrogen energy. This solves the problem of hydrogen energy waste in traditional treatment methods and improves resource utilization.

[0036] After hydrogen collection is completed, the push assembly 37 pulls the mounting platform 31 and its components upwards. The elastic element 33 elastically resets, pushing the top plate 32 downwards. The push rod 321 resets simultaneously, and the clamping rod 35 flips and resets under its own weight and the reverse force of the connecting bolt 351, releasing the clamp on the tank opening. Then, the telescopic rod 143 in the drilling assembly 14 is activated. The telescopic rod 143 pushes the mounting cylinder 142 upwards along the fixed frame 141, driving the drive motor 144 and the drill bit 145 closer to the bottom of the tank. The drive motor 144 is activated to drive the drill bit 145 to rotate and drill a hole. The water inside the tank flows back to the water tank 4 through the hole and the interface 13, realizing water resource recycling, reducing wastewater discharge, and lowering operating costs.

[0037] After the accumulated water has completely flowed back, the first telescopic rod 143 drives the installation cylinder 142 and the drill bit 145 to move down and reset. The second telescopic rod 153 pulls the clamping plate 154 along the installation groove 152 to reset, releasing the clamping on the bottom of the tank. The first drive motor 12 is started to drive the baffle 2 to rotate and open, and the processed tank is taken out, completing one hydrogen recovery process. The whole process is highly automated and does not require complicated manual operation, making it suitable for the needs of small and medium-sized dismantling companies.

[0038] In summary, compared with the prior art, the embodiments of the present invention have the following advantages: Advantage 1: Upgraded sealing and protection significantly improves safety. The main body 1 and the baffle 2 form a sealed cavity through the linkage of the drive motor 12, drive gear 11, and mating gear 21, blocking hydrogen diffusion. The rubber plate 382 on the outer wall of the connecting pipe 38 flexibly fits the tank opening, and together with the clamping rod 35, it forms a double seal to prevent leakage and completely remove residual hydrogen, avoiding the explosion hazards and safety blind spots of traditional treatments.

[0039] Advantage 2: Adaptive linkage clamping, suitable for multiple tank sizes. In the clamping assembly 15, the telescopic rod 153 pushes the clamping plate 154 to slide along the mounting groove 152, adaptively fixing the bottom of tanks of different sizes. The docking unit 3, through the linkage of the elastic element 33, push rod 321, extrusion groove 323 and clamping rod 35, achieves adaptive clamping of the tank opening. Combined with the deformation capability of the rubber plate 382, ​​it can adapt to tanks of different diameters and wall thicknesses without manual adjustment, making it extremely versatile.

[0040] Advantage 3: Closed-loop design for efficient resource reuse. The water tank 4, water pipe 41, connecting pipe 38 and collection tank 5 are linked to recover residual hydrogen energy after water injection and hydrogen discharge. After drilling by the drilling component 14, the accumulated water flows back to the water tank 4 through the connecting interface 13, thus constructing a dual circulation system of hydrogen energy and water resources, eliminating waste and taking into account both environmental protection and economy.

[0041] Fourthly, the entire process is automated, improving processing efficiency. All components are linked in an automated manner. The drive motor 12 controls the opening and closing of the baffle 2. The telescopic rod 2 153, the pushing component 37, and the drilling component 14 complete the fixing, docking, and drilling operations in sequence. The limit rod 36 ensures accurate docking. No complicated manual intervention is required throughout the process, which is suitable for batch processing needs.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention 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 will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A hydrogen recovery device for waste high-pressure hydrogen storage tanks of hydrogen fuel cell vehicles, characterized in that, include: The main body (1) has a baffle (2) rotatably connected inside the main body (1); The main body (1) is provided with a support (16) at the bottom, and a water tank (4) is provided inside the support (16). The bottom inner side of the main body (1) is provided with a docking interface (13) that communicates with the water tank (4). A drilling assembly (14) is provided inside the docking interface (13). A clamping assembly (15) is provided near the docking interface (13) at the bottom inner side of the main body (1). A docking unit (3) is provided at the top inner side of the main body (1). The docking unit (3) includes a mounting platform (31), and a connecting pipe (38) is fixedly connected inside the mounting platform (31). The top end of the connecting pipe (38) extends to the outside of the main body (1). The bottom of the mounting platform (31) is connected to a top plate (32) through an elastic element (33). A sliding opening (34) is provided through the bottom of the top plate (32). A sliding opening (312) is provided at the bottom of the mounting platform (31) corresponding to the sliding opening (34). A push rod (321) is provided at the top of the top plate (32). The top end of the push rod (321) extends into the mounting platform (31). A positioning seat (311) is provided inside the mounting platform (31) near the sliding opening (312). A clamping rod (35) is hinged inside the positioning seat (311). The bottom end of the clamping rod (35) extends through the sliding opening (312) and the sliding opening (34) into the main body (1).

2. The hydrogen recovery device for a high-pressure hydrogen storage tank in a hydrogen fuel cell vehicle according to claim 1, characterized in that: The outer wall of the baffle (2) is provided with mating teeth (21) near the top and bottom. The main body (1) is rotatably mounted with a drive gear (11) near the mating teeth (21). The main body (1) is provided with a drive motor (12) near the drive gear (11) on the outside. The output end of the drive motor (12) is connected to the drive gear (11).

3. The hydrogen recovery device for a high-pressure hydrogen storage tank in a hydrogen fuel cell vehicle according to claim 1, characterized in that: The drilling assembly (14) includes a fixing frame (141) connected to the inner wall of the interface (13). An installation cylinder (142) is slidably installed inside the fixing frame (141). A second drive motor (144) is provided on the top inner side of the installation cylinder (142). The output end of the second drive motor (144) extends to the outside of the installation cylinder (142) and is connected to a drill bit (145). A first telescopic rod (143) is provided on the bottom inner side of the fixing frame (141). The top end of the first telescopic rod (143) is connected to the inner wall of the installation cylinder (142).

4. The hydrogen recovery device for a high-pressure hydrogen storage tank in a hydrogen fuel cell vehicle as described in claim 1, characterized in that: The top of the connecting pipe (38) is provided with a connection port one (383) near the top, and the top of the connecting pipe (38) is provided with a connection port two (384). The water tank (4) is provided with a water supply pipe (41) outside, and the top of the water supply pipe (41) is connected to the connection port one (383) through a hose. The main body (1) is provided with a collection tank (5) outside, and the top of the collection tank (5) is connected to the connection port two (384) through a hose.

5. A hydrogen recovery device for a high-pressure hydrogen storage tank in a hydrogen fuel cell vehicle as described in claim 1, characterized in that: The top of the main body (1) is provided with a pushing component (37). The bottom telescopic end of the pushing component (37) passes through the main body (1) and is fixedly connected to the mounting platform (31). The bottom of the mounting platform (31) is symmetrically provided with limit ports (313). The limit port (313) is slidably connected to a limit rod (36). The top of the limit rod (36) is fixedly connected to the inner wall of the main body (1).

6. A hydrogen recovery device for a high-pressure hydrogen storage tank in a hydrogen fuel cell vehicle as described in claim 1, characterized in that: The push rod (321) has a slot (322) on the outer wall of one end inside the mounting platform (31). The slot (322) has an extrusion groove (323) on the outer wall. The clamp rod (35) extends into the slot (322) at one end inside the mounting platform (31). The clamp rod (35) has a connecting bolt (351) on the outer wall of one end inside the slot (322). The connecting bolt (351) extends into the extrusion groove (323) and the two are slidably connected.

7. A hydrogen recovery device for a high-pressure hydrogen storage tank in a hydrogen fuel cell vehicle according to claim 1, characterized in that: The bottom end of the connecting pipe (38) passes through the top plate (32) and is slidably connected to it. The bottom end of the connecting pipe (38) is provided with a conical connecting joint (381). A rubber plate (382) is provided on the outer wall of the connecting pipe (38) near the connecting joint (381).

8. A hydrogen recovery device for a high-pressure hydrogen storage tank in a hydrogen fuel cell vehicle as described in claim 1, characterized in that: The clamping assembly (15) includes a fixed platform (151) fixedly connected to the inner wall of the main body (1). The fixed platform (151) has an installation groove (152) on its top. A clamping plate (154) is slidably connected inside the installation groove (152). A telescopic rod (153) is provided inside the installation groove (152). The output end of the telescopic rod (153) is connected to the clamping plate (154).

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