Natural gas hydrogen production equipment

Through the design of docking devices and protection and reinforcement mechanisms, the pipelines of natural gas hydrogen production equipment can be quickly connected and disconnected, solving the problems of cumbersome connection and poor sealing performance in existing technologies, and improving the maintenance efficiency and safety of the equipment.

CN223499050UActive Publication Date: 2025-10-31SICHUAN HUAGUO OIL & GAS ENG DESIGN CO LTD
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Patent Information

Application Number
CN202422283191.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-19
Publication Date
2025-10-31
Estimated Expiration
2034-09-19

AI Technical Summary

Technical Problem

Existing natural gas hydrogen production equipment has complicated and time-consuming pipeline connections, is prone to wear and tear, has poor sealing performance at the joints, and may loosen and fall off during vibration, posing a safety hazard.

Method used

The device employs a docking mechanism, including components such as a mating frame, fixed pipe, connecting pipe, moving frame, insertion mechanism, variable diameter groove, mating sleeve, and longitudinal groove, along with a protective and reinforcing mechanism, to achieve rapid docking and disconnection. The sealing performance is improved through sealing rings and sealing sleeves, while the limiting rod and limiting groove enhance stability.

Benefits of technology

It simplifies the pipe connection and disassembly process, improves maintenance efficiency, enhances sealing performance and equipment operation safety, prevents gas leakage, and improves equipment reliability and durability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses natural gas hydrogen production equipment which comprises a hydrogen production assembly, a butt joint device is arranged on the outer side of the hydrogen production assembly, the butt joint device comprises a matching frame, a fixed pipe, a connecting pipe, a movable frame, an inserting mechanism, a reducing groove, a matching sleeve and a longitudinal groove, the matching frame is connected to the outer side of the matching sleeve, and the movable frame is arranged in the reducing groove. The fixing pipe is sleeved with the variable-diameter groove, the variable-diameter groove is formed in the matching frame and the matching sleeve, the fixing pipe is sleeved with the matching sleeve, the longitudinal groove penetrates through the side wall of the fixing pipe, and a protection mechanism is arranged on the outer side of the connecting pipe and comprises a control sleeve, a limiting groove, a limiting block, an ejector block and a sealing sleeve. The limiting block is connected to one side of the matching sleeve, the ejector block is connected to one side of the control sleeve, the sealing sleeve is installed in the fixing pipe, and a reinforcing mechanism is arranged on the outer side of the fixing pipe. According to the utility model, through improving the design of pipeline connection, the overall performance and safety of equipment are improved, the maintenance cost is reduced, the reliability of the equipment is improved, and the service life of the equipment is prolonged.
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Description

Technical Field

[0001] This utility model relates to the technical field of natural gas hydrogen production equipment, and more specifically, it relates to a natural gas hydrogen production equipment. Background Technology

[0002] In existing technologies, natural gas hydrogen production equipment often requires pipeline connection and disassembly during operation to facilitate equipment installation, maintenance, and upgrades. However, traditional pipeline connection methods are often cumbersome, requiring the use of fasteners such as bolts and nuts, as well as specialized tools and skilled operating techniques. This connection method is not only time-consuming and labor-intensive, but also prone to wear and damage to connecting parts during disassembly and reconnection, affecting the use of the equipment.

[0003] Furthermore, although some devices designed to enable rapid connection and disconnection of pipelines have emerged in the existing technology, these devices often sacrifice the sealing performance of the connection in pursuit of rapid connection. This design flaw may lead to problems such as poor sealing and leakage at the pipeline connection during actual use. This not only reduces the operating efficiency of the equipment, but may also cause safety accidents, posing a threat to the environment and personnel safety.

[0004] Furthermore, existing devices for quickly connecting and disconnecting pipelines are often simple in structure and lack sufficient stability and reliability. After the pipelines are connected, these devices may loosen or even fall off due to external factors such as vibration during equipment operation, leading to accidental unlocking. In this case, the pipeline may suddenly disconnect during use, causing hydrogen leakage, which not only affects the normal operation of the equipment but may also cause serious consequences such as fire and explosion. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems existing in the prior art, this utility model provides a natural gas hydrogen production device to solve the technical problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a natural gas hydrogen production device, comprising a hydrogen production assembly, characterized in that: a docking device is provided on the outside of the hydrogen production assembly, the docking device comprising a mating frame, a fixed pipe, a connecting pipe, a moving frame, an insertion mechanism, a variable diameter groove, a mating sleeve, and a longitudinal groove; the mating frame is fixedly connected to the outside of the mating sleeve; the connecting pipe is detachably inserted into the fixed pipe; the moving frame is slidably disposed in the variable diameter groove; the variable diameter groove is opened between the mating frame and the mating sleeve; the mating sleeve is rotatably sleeved on the outside of the fixed pipe; the longitudinal groove penetrates the side wall of the fixed pipe; a protective mechanism is provided on the outside of the connecting pipe, the protective mechanism comprising a control sleeve, a limiting groove, a limiting block, a top block, and a sealing sleeve; the control sleeve is rotatably sleeved on the outside of the fixed pipe; the limiting groove is opened on one side of the control sleeve; the limiting block is fixedly connected to one side of the mating sleeve and slidably disposed in the limiting groove; the top block is fixedly connected to one side of the control sleeve; the sealing sleeve is detachably installed inside the fixed pipe; and a reinforcing mechanism is provided on the outside of the fixed pipe.

[0009] The present invention is further configured such that the two input ends of the hydrogen production assembly are connected to an input pipe, the output end of the hydrogen production assembly is connected to an output pipe, and one end of both the output pipe and the input pipe is fixedly connected to a fixed pipe.

[0010] The present invention is further configured such that a fixing plate is connected to the outside of the fixing tube, and a push spring is connected to one side of the fixing plate, with one end of the push spring being in contact with the mating sleeve.

[0011] The present invention is further configured such that the insertion mechanism includes a plug rod and a slot, the plug rod is fixedly connected to one side of the movable frame, and one end of the plug rod passes through the longitudinal groove and is inserted into the slot, the slot being opened on the outside of the connecting tube.

[0012] The present invention is further configured such that a sealing ring is provided on the outside of the connecting pipe, and a corresponding sealing groove is provided on the inside of the fixing pipe. The sealing groove is adapted to the sealing ring, and both the sealing ring and the sealing sleeve are made of rubber. The multiple sealing mechanism of the sealing ring and the sealing groove effectively enhances the sealing strength of the pipe connection.

[0013] The present invention is further configured such that the reinforcing mechanism includes a limiting sleeve, a connecting sleeve, a limiting rod, and a limiting groove. The limiting sleeve is movably fitted onto the outside of the fixed pipe via a thread. The connecting sleeve is fixedly connected to one side of the control sleeve. The limiting rod is slidably installed on the side wall of the connecting sleeve, with one end of the limiting rod inserted into the limiting groove. Multiple limiting grooves are formed on the outside of the fixed pipe. The reinforcing mechanism effectively enhances the stability of the pipe connection and prevents accidental disconnection.

[0014] The present invention is further configured such that a reset spring is connected to the outer side of the connecting sleeve, and the other end of the limiting rod is connected to the outer wall of the connecting sleeve through the reset spring. The reset spring ensures that the limiting rod is reset normally.

[0015] The present invention is further provided that rubber strips are connected to the outer sides of both the limiting sleeve and the control sleeve, and the rubber strips improve the operating feel.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a natural gas hydrogen production device, which has the following advantages:

[0018] 1. The docking device, through the coordinated action of components such as the mating frame, fixed pipe, connecting pipe, moving frame, insertion mechanism, reducing groove, mating sleeve, and longitudinal groove, enables rapid docking and disconnection between pipes. The mating frame is fixedly connected to the outside of the mating sleeve, the connecting pipe can be detachably inserted into the fixed pipe, the moving frame is slidably set in the reducing groove, the reducing groove is opened between the mating frame and the mating sleeve, the mating sleeve is rotatably fitted on the outside of the fixed pipe, and the longitudinal groove penetrates the side wall of the fixed pipe. This design simplifies the process of connecting and disassembling pipes, improves maintenance efficiency, and makes the inspection and replacement of pipes more convenient.

[0019] 2. The protection mechanism includes components such as a control sleeve, limit groove, limit block, top block, and sealing sleeve, which enhances the sealing performance of the pipe connection. The control sleeve is rotatably fitted on the outside of the fixed pipe. The setting of the limit block and limit groove ensures the synchronous rotation of the mating sleeve and the control sleeve, simplifying operation. The setting of the top block mainly serves to limit the limit frame and the mating sleeve. The sealing sleeve can be detachably installed inside the fixed pipe. This design ensures the sealing performance of the pipe connection and prevents gas leakage. The multiple sealing mechanism of the sealing ring and sealing groove further strengthens the sealing strength of the connection and improves the operating efficiency and safety of the equipment.

[0020] 3. The reinforcement mechanism includes components such as a limiting sleeve, a connecting sleeve, a limiting rod, and a limiting groove, which enhances the structural stability of the docking device. The limiting sleeve mainly serves to limit the limiting rod and prevent it from moving accidentally. The connecting sleeve is fixedly connected to one side of the control sleeve, and the limiting rod is slidably installed on the side wall of the connecting sleeve. One end of the limiting rod is inserted into the limiting groove. Multiple limiting grooves are opened on the outside of the fixed pipe. This design ensures the stability of the pipeline after docking and prevents loosening or detachment caused by external factors, thereby improving the reliability and durability of the entire pipeline system. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a natural gas hydrogen production device according to the present invention;

[0022] Figure 2 for Figure 1 A magnified schematic diagram of the local structure at point A;

[0023] Figure 3 This is a structural schematic diagram of the docking device, protection mechanism, and reinforcement mechanism in this utility model;

[0024] Figure 4 This is a cross-sectional structural diagram of the docking device, protection mechanism, and reinforcement mechanism in this utility model;

[0025] Figure 5 for Figure 4 A magnified schematic diagram of the local structure at point B;

[0026] Figure 6 This is a schematic diagram of the control sleeve part in this utility model.

[0027] In the diagram: 1. Hydrogen production assembly; 2. Fitting frame; 3. Fixed pipe; 4. Connecting pipe; 5. Moving frame; 6. Variable diameter groove; 7. Fitting sleeve; 8. Longitudinal groove; 9. Control sleeve; 10. Limiting groove; 11. Limiting block; 12. Top block; 13. Sealing sleeve; 14. Input pipe; 15. Output pipe; 16. Fixed plate; 17. Push spring; 18. Insert rod; 19. Slot; 20. Sealing ring; 21. Sealing groove; 22. Limiting sleeve; 23. Connecting sleeve; 24. Limiting rod; 25. Limiting groove; 26. Return spring; 27. Rubber strip. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] Please see Figure 1-6A natural gas hydrogen production device includes a hydrogen production assembly 1, characterized in that: a docking device is provided on the outside of the hydrogen production assembly 1, the docking device including a mating frame 2, a fixed pipe 3, a connecting pipe 4, a movable frame 5, an insertion mechanism, a variable diameter groove 6, a mating sleeve 7, and a longitudinal groove 8. The mating frame 2 is fixedly connected to the outside of the mating sleeve 7, the connecting pipe 4 is detachably inserted into the fixed pipe 3, the movable frame 5 is slidably disposed in the variable diameter groove 6, the variable diameter groove 6 is formed between the mating frame 2 and the mating sleeve 7, the mating sleeve 7 is rotatably sleeved on the outside of the fixed pipe 3, and the longitudinal groove 8... 8. A protective mechanism is provided on the outside of the connecting pipe 4 through the side wall of the fixed pipe 3. The protective mechanism includes a control sleeve 9, a limiting groove 10, a limiting block 11, a top block 12 and a sealing sleeve 13. The control sleeve 9 is rotatably sleeved on the outside of the fixed pipe 3. The limiting groove 10 is opened on one side of the control sleeve 9. The limiting block 11 is fixedly connected to one side of the mating sleeve 7 and is slidably disposed in the limiting groove 10. The top block 12 is fixedly connected to one side of the control sleeve 9. The sealing sleeve 13 is detachably installed inside the fixed pipe 3. A reinforcement mechanism is provided on the outside of the fixed pipe 3.

[0032] The hydrogen production assembly 1 has two input terminals connected to an input pipe 14 and an output terminal connected to an output pipe 15. Both the output pipe 15 and one end of the input pipe 14 are fixedly connected to a fixed pipe 3.

[0033] A fixing plate 16 is connected to the outside of the fixing tube 3, and a push spring 17 is connected to one side of the fixing plate 16. One end of the push spring 17 is in contact with the mating sleeve 7.

[0034] The insertion mechanism includes a plug rod 18 and a slot 19. The plug rod 18 is fixedly connected to one side of the movable frame 5, and one end of the plug rod 18 passes through the longitudinal groove 8 and is inserted into the slot 19. The slot 19 is located on the outside of the connecting tube 4.

[0035] A sealing ring 20 is provided on the outside of the connecting pipe 4, and a corresponding sealing groove 21 is provided on the inside of the fixing pipe 3. The sealing groove 21 is adapted to the sealing ring 20, and both the sealing ring 20 and the sealing sleeve 13 are made of rubber.

[0036] In this embodiment, when the equipment is in use, the other end of the connecting pipe 4 is responsible for connecting to other external equipment. When maintenance, upgrades, or replacements of the pipeline are required, the equipment must first be shut down, then the pipeline is dismantled, and then the control sleeve 9 is rotated. The control sleeve 9 will drive the mating sleeve 7 to rotate through the cooperation of the limiting groove 10 and the limiting block 11. Then the mating sleeve 7 will drive the mating frame 2 and the variable diameter groove 6 set on the outside to rotate. Then the moving frame 5 will slide relative to the variable diameter groove 6. Due to the variable diameter structure design of the variable diameter groove 6, when the variable diameter groove 6 rotates with the mating frame 2 and the mating sleeve 7, the moving frame 5 will drive the insertion rod 18 to gradually... Slide out of slot 19. Simultaneously, the control sleeve 9 will rotate the top block 12 on one side. Then, the top block 12 will no longer limit the movement of the movable frame 5 and the insertion rod 18. The push spring 17 connected to the fixed plate 16 will reset, pushing the mating sleeve 7 to slide. The mating sleeve 7 will then drive the movable frame 5 to slide, causing the insertion rod 18 connected to one side to slide in the longitudinal groove 8. Simultaneously, the mating sleeve 7 will drive the limiting block 11 on one side to slide along the limiting groove 10. Then, the connecting pipe 4 can be pulled out of the fixed pipe 3. After maintenance, upgrades, or replacement of the connecting pipe 4, it is necessary to… To connect the pipes, first insert one end of the connecting pipe 4 into the fixed pipe 3. When one end of the connecting pipe 4 abuts against the sealing sleeve 13 inside the fixed pipe 3, rotate the control sleeve 9 in the reverse direction. The control sleeve 9, through the cooperation of the limiting block 11 and the limiting groove 10, drives the mating sleeve 7 to rotate in the reverse direction and reset. Then, the mating sleeve 7 will drive the mating frame 2 and the reducing groove 6 to reset. Then, the moving frame 5 will reset along the reducing groove 6. At the same time, the moving frame 5 will drive the insertion rod 18 to gradually insert into the slot 19. Simultaneously, the top block 12 on one side of the control sleeve 9 will push the moving frame 5 and the insertion rod 18 to move. Then, the moving frame 5 will drive the insertion rod 18 to move along the reducing groove 6. The longitudinal groove 8 moves, and the insertion rod 18 will drive the connecting pipe 4 to press the sealing sleeve 13 set inside the fixed pipe 3 through the slot 19, thereby ensuring the sealing performance of the connection between the connecting pipe 4 and the fixed pipe 3. Then, the multiple sealing rings 20 set on the outside of the connecting pipe 4 will engage in the corresponding sealing grooves 21. This multi-layer sealing structure design further strengthens the sealing strength of the connection between the connecting pipe 4 and the fixed pipe 3, effectively preventing leakage at the pipe connection. Then, the moving frame 5 will drive the mating sleeve 7 to slide and reset through the mating frame 2 and the variable diameter groove 6. Then, the mating sleeve 7 will cooperate with the fixed plate 16 to compress the push spring 17.

[0037] Please see Figure 1-6 As one implementation of the reinforcement mechanism: the reinforcement mechanism includes a limiting sleeve 22, a connecting sleeve 23, a limiting rod 24 and a limiting groove 25. The limiting sleeve 22 is movably sleeved on the outside of the fixed tube 3 by means of threads. The connecting sleeve 23 is fixedly connected to one side of the control sleeve 9. The limiting rod 24 is slidably installed on the side wall of the connecting sleeve 23. One end of the limiting rod 24 is inserted into the limiting groove 25. Multiple limiting grooves 25 are opened on the outside of the fixed tube 3.

[0038] A return spring 26 is provided on the outside of the connecting sleeve 23, and the other end of the limiting rod 24 is connected to the outer wall of the connecting sleeve 23 through the return spring 26.

[0039] Both the limiting sleeve 22 and the control sleeve 9 are connected to rubber strips 27 on their outer sides.

[0040] More specifically, before disconnecting the connection between the fixed pipe 3 and the connecting pipe 4, first rotate the limiting sleeve 22. The limiting sleeve 22 will move along the thread, and then the inner wall of the limiting sleeve 22 will no longer limit the outer side of the limiting rod 24. Then rotate the control sleeve 9. The control sleeve 9 will drive the connecting sleeve 23 on one side to rotate, and then the connecting sleeve 23 will drive the limiting rod 24 to move. Due to the rounded corner structure at the end of the limiting rod 24 and the edge of the limiting groove 25, and the fact that the return spring 26 only provides a small return force to the limiting rod 24, the side wall of the limiting groove 25 will press against the end of the limiting rod 24. Then one end of the limiting rod 24 will slide out of the limiting groove 25, and at the same time, the other end of the limiting rod 24 will drive the return spring 26 to stretch. Then the control sleeve 9 will drive the mating sleeve 7 to rotate through the cooperation of the limiting groove 10 and the limiting block 11. When it is necessary to connect the connecting pipe 4 and the fixed pipe 3, first First, connect them together according to the above operation. When the control sleeve 9 is fully reset and the connecting pipe 4 is fully connected to the fixed pipe 3, the control sleeve 9 will drive the connecting sleeve 23 connected on one side to reset. Then, the reset spring 26 will drive the limiting rod 24 to reset. Then, the other end of the limiting rod 24 will engage in the original limiting groove 25. Rotate the limiting sleeve 22 in the opposite direction. The limiting sleeve 22 will reset along the thread line. Then, the inner wall of the limiting sleeve 22 will limit the outer side of the limiting rod 24 again to prevent the limiting rod 24 from moving. Then, the limiting rod 24 and the limiting groove 25 cooperate to limit the control sleeve 9, thereby preventing the control sleeve 9 and the mating sleeve 7 from rotating. At the same time, the top block 12 set on one side of the control sleeve 9 can prevent the moving frame 5, the insertion rod 18 and the mating sleeve 7 from sliding, thereby effectively ensuring the stability of the pipeline after connection and preventing the pipeline from leaking or disconnecting during use.

[0041] In summary, during the use or operation of the overall equipment: When the equipment is in use, the other end of the connecting pipe 4 is responsible for connecting to other external equipment. When maintenance, upgrades, or replacements of the pipeline are required, the equipment must be shut down first, and then the pipeline must be dismantled. First, rotate the limiting sleeve 22, which will move along the thread. Then, the inner wall of the limiting sleeve 22 will no longer limit the outer side of the limiting rod 24. Then, rotate the control sleeve 9, which will drive the connecting sleeve 23 on one side to rotate. Then, the connecting sleeve 23 will drive the limiting rod 24 to move. Due to the rounded corner structure at the end of the limiting rod 24 and the edge of the limiting groove 25, and the fact that the return spring 26 only provides a small return force for the limiting rod 24, the side wall of the limiting groove 25 will press against the end of the limiting rod 24. Then, one end of the limiting rod 24 will slide out of the limiting groove 25, and the other end of the limiting rod 24 will drive the return spring 26 to stretch. At the same time, the control sleeve 9 will pass through the limiting groove 10. The engagement of the limiting block 11 causes the mating sleeve 7 to rotate, which in turn causes the mating frame 2 and the variable diameter groove 6 on the outer side to rotate. The moving frame 5 then slides relative to the variable diameter groove 6. Due to the variable diameter structure design of the variable diameter groove 6, when the variable diameter groove 6 rotates with the mating frame 2 and the mating sleeve 7, the moving frame 5 causes the insertion rod 18 to gradually slide out of the slot 19. At the same time, the control sleeve 9 causes the top block 12 on one side to rotate. Then the top block 12 no longer limits the moving frame 5 and the insertion rod 18. Then the push spring 17 connected to one side of the fixed plate 16 will reset. Then the push spring 17 will push the mating sleeve 7 to slide. Then the mating sleeve 7 causes the moving frame 5 to slide. Then the moving frame 5 causes the insertion rod 18 connected to one side to slide in the longitudinal groove 8. At the same time, the mating sleeve 7 causes the limiting block 11 on one side to slide along the limiting groove 10. Then the connecting pipe 4 can be pulled out from the fixed pipe 3.

[0042] After the maintenance, upgrade, or replacement of the connecting pipe 4 is completed, the pipes need to be connected. First, insert one end of the connecting pipe 4 into the fixed pipe 3. When one end of the connecting pipe 4 abuts against the sealing sleeve 13 set inside the fixed pipe 3, rotate the control sleeve 9 in the reverse direction. The control sleeve 9, through the cooperation of the limiting block 11 and the limiting groove 10, drives the mating sleeve 7 to rotate in the reverse direction and reset. Then, the mating sleeve 7 will drive the mating frame 2 and the diameter-changing groove 6 to reset. Then, the moving frame 5 will reset along the diameter-changing groove 6. At the same time, the moving frame 5 will drive the insertion rod 18 to gradually insert into the slot 19. Simultaneously, the top block 12 set on one side of the control sleeve 9 will push the moving frame 5 and the insertion rod 18 to move. Then, the moving frame 5 will drive the insertion rod 18 to move along the longitudinal groove 8, and the insertion rod 18 will drive the connecting pipe 4 to press the sealing sleeve 13 set inside the fixed pipe 3 through the slot 19, thereby ensuring the sealing performance at the connection between the connecting pipe 4 and the fixed pipe 3. Then, the multiple sealing rings 20 set on the outside of the connecting pipe 4 will engage in the corresponding sealing grooves 21. This multi-layer sealing structure design further strengthens the sealing performance. The sealing strength at the connection between the connecting pipe 4 and the fixed pipe 3 effectively prevents leakage at the pipe connection. Then, the moving frame 5 will drive the mating sleeve 7 to slide and reset through the mating frame 2 and the reducing groove 6. Then, the mating sleeve 7 will cooperate with the fixed plate 16 to squeeze the push spring 17. At the same time, the control sleeve 9 will drive the connecting sleeve 23 connected on one side to fully reset. Then, the reset spring 26 will drive the limiting rod 24 to reset. Then, the other end of the limiting rod 24 will engage in the original limiting groove 25. The limiting sleeve 22 will rotate in the opposite direction and reset along the thread. Then, the inner wall of the limiting sleeve 22 will limit the outer side of the limiting rod 24 again to prevent the limiting rod 24 from moving. Then, the limiting rod 24 and the limiting groove 25 cooperate to limit the control sleeve 9, thereby preventing the control sleeve 9 and the mating sleeve 7 from rotating. At the same time, the top block 12 set on one side of the control sleeve 9 can prevent the moving frame 5, the insertion rod 18 and the mating sleeve 7 from sliding, thereby effectively ensuring the stability of the pipe connection and preventing leakage and disconnection of the pipe during use.

[0043] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A natural gas hydrogen production device, comprising a hydrogen production assembly (1), characterized in that: The hydrogen production assembly (1) is provided with a docking device on its outer side. The docking device includes a mating frame (2), a fixed pipe (3), a connecting pipe (4), a moving frame (5), a plugging mechanism, a variable diameter groove (6), a mating sleeve (7), and a longitudinal groove (8). The mating frame (2) is fixedly connected to the outside of the mating sleeve (7). The connecting pipe (4) is detachably inserted into the fixed pipe (3). The moving frame (5) is slidably disposed in the variable diameter groove (6). The variable diameter groove (6) is opened between the mating frame (2) and the mating sleeve (7). The mating sleeve (7) is rotatably sleeved on the outside of the fixed pipe (3). The longitudinal groove (8) penetrates the side wall of the fixed pipe (3). A protective mechanism is provided on the outside of the connecting pipe (4). The protective mechanism includes a control sleeve (9), a limiting groove (10), a limiting block (11), a top block (12), and a sealing sleeve (13). The control sleeve (9) is rotatably sleeved on the outside of the fixed pipe (3). The limiting groove (10) is opened on one side of the control sleeve (9). The limiting block (11) is connected to one side of the mating sleeve (7). The top block (12) is connected to one side of the control sleeve (9). The sealing sleeve (13) is installed inside the fixed pipe (3). A reinforcement mechanism is provided on the outside of the fixed pipe (3).

2. The natural gas hydrogen production equipment according to claim 1, characterized in that: The hydrogen production assembly (1) has two input terminals connected to an input pipe (14) and an output terminal connected to an output pipe (15). One end of both the output pipe (15) and the input pipe (14) is fixedly connected to a fixed pipe (3).

3. The natural gas hydrogen production equipment according to claim 1, characterized in that: A fixing plate (16) is connected to the outside of the fixing tube (3), and a push spring (17) is connected to one side of the fixing plate (16). One end of the push spring (17) is in contact with the mating sleeve (7).

4. A natural gas hydrogen production device according to claim 3, characterized in that: The insertion mechanism includes a plug (18) and a slot (19). The plug (18) is fixedly connected to one side of the movable frame (5), and one end of the plug (18) passes through the longitudinal groove (8) and is inserted into the slot (19). The slot (19) is located outside the connecting tube (4).

5. A natural gas hydrogen production device according to claim 1, characterized in that: The connecting pipe (4) is provided with a sealing ring (20) on the outside, and the fixing pipe (3) is provided with a corresponding sealing groove (21) on the inside. The sealing groove (21) is adapted to the sealing ring (20), and both the sealing ring (20) and the sealing sleeve (13) are made of rubber.

6. A natural gas hydrogen production device according to any one of claims 1-5, characterized in that: The reinforcement mechanism includes a limiting sleeve (22), a connecting sleeve (23), a limiting rod (24), and a limiting groove (25). The limiting sleeve (22) is movably fitted onto the outside of the fixed tube (3) by means of threads. The connecting sleeve (23) is fixedly connected to one side of the control sleeve (9). The limiting rod (24) is slidably installed on the side wall of the connecting sleeve (23). One end of the limiting rod (24) is inserted into the limiting groove (25). Multiple limiting grooves (25) are opened on the outside of the fixed tube (3).

7. A natural gas hydrogen production device according to claim 6, characterized in that: A reset spring (26) is connected to the outside of the connecting sleeve (23), and the other end of the limiting rod (24) is connected to the outer wall of the connecting sleeve (23) through the reset spring (26).

8. A natural gas hydrogen production device according to claim 7, characterized in that: Both the limiting sleeve (22) and the control sleeve (9) are provided with rubber strips (27) on their outer sides.