Hydrogen delivery tube sealing device and sealing method

Abstract

The application relates to the technical field of hydrogen delivery pipe sealing, in particular to a hydrogen delivery pipe sealing device and sealing method, which comprises a first delivery pipe, a second delivery pipe and a fastening unit. The first delivery pipe and the second delivery pipe are sealed by the fastening unit at multiple levels, so that the connection part of the first delivery pipe and the second delivery pipe is prevented from being deformed by external force, the fastening degree of the first delivery pipe and the second delivery pipe is reduced, the sealing property of the connection part of the first delivery pipe and the second delivery pipe is reduced, and the sealing property between the first delivery pipe and the second delivery pipe cannot be kept high. The first delivery pipe and the second delivery pipe are positioned by the fastening unit, and the first delivery pipe and the second delivery pipe are connected, so that the first delivery pipe and the second delivery pipe are tightly connected. After the first delivery pipe and the second delivery pipe are connected, the outer circle of the connection part of the delivery pipes is sealed, and the sealing degree between the delivery pipes is increased.

Description

Technical Field

[0001] This invention relates to the field of hydrogen delivery pipe sealing technology, specifically to a hydrogen delivery pipe sealing device and sealing method. Background Technology

[0002] There are two common forms of hydrogen transportation systems: pipeline transportation and liquid transportation. This article mainly focuses on pipeline transportation. Pipeline transportation is mainly suitable for long-distance, large-volume hydrogen demand applications, such as city gas, industrial gas, and fertilizer production. In pipeline transportation, hydrogen needs to be processed by a hydrogen purification system first, and then pressurized by a high-pressure pump to become liquid hydrogen or compress gaseous hydrogen into high-pressure gas for transportation.

[0003] To effectively prevent hydrogen leakage and ensure the safe operation of pipelines, a high degree of sealing between pipes is required. The high sealing of hydrogen transmission pipeline connections is due to a combination of factors, including the use of special seals, pressure balance design, precise machining and installation, and strict quality control and testing. However, during the use and installation of pipelines, they are easily subjected to external forces. Under prolonged external forces, the tightness of the transmission pipes decreases, leading to a reduction in the sealing of the pipe connections. Furthermore, special seals alone cannot guarantee a consistently high level of sealing at the pipe connections, resulting in hydrogen leakage after prolonged use. Summary of the Invention

[0004] In view of the above problems, this application provides a sealing device and method for hydrogen transmission pipes to solve the technical problem in related technologies where pipelines are easily subjected to external forces during use and installation. Under prolonged external force, the tightness of the transmission pipe decreases, leading to reduced sealing at pipe connections. Furthermore, special sealing components alone cannot guarantee consistently high sealing at pipe connections, resulting in hydrogen leakage after prolonged use. To achieve the above objective, this application provides the following technical solution.

[0005] The first aspect of this application provides a hydrogen delivery pipe sealing device, including a first delivery pipe, a second delivery pipe, and a fastening unit. The fastening unit is disposed on the first delivery pipe and is used to connect the first delivery pipe and the second delivery pipe. The second delivery pipe is disposed at the right end of the first delivery pipe. The fastening unit includes a threaded fastening sleeve. The outer end of the first delivery pipe is connected to the threaded fastening sleeve for connecting the first delivery pipe and the second delivery pipe by a threaded connection. The inner end of the threaded fastening sleeve is symmetrically provided with insertion parts for limiting the threaded fastening sleeve on both the left and right sides. Each insertion part is provided with a movable frame. The two upper and lower movable frames are fixedly installed with a first extrusion part for sealing and squeezing the upper and lower ends of the first delivery pipe and the second delivery pipe. The two front and rear movable frames are fixedly installed with a second extrusion part for sealing and squeezing the front and rear ends of the first extrusion part. Limiting grooves are uniformly opened on the left outer end of the first delivery pipe. A cylindrical spring is fixedly installed in the limiting groove. A sector-shaped plate is fixedly installed at the end of the spring to limit the left end of the threaded fastening sleeve. A semi-ringed insert block one is fixedly installed on the upper right half of the first conveying pipe to limit the first conveying pipe. A semi-ringed insert block two is fixedly installed on the lower left half of the second conveying pipe to limit the second conveying pipe. Fluororubber sleeves are fixedly installed at the outer ends of both semi-ringed insert blocks one and two to seal the connection between semi-ringed insert block one and the second conveying pipe, and between semi-ringed insert block two and the first conveying pipe. The first conveying pipe and the second conveying pipe... Multiple slots are provided at the outer ends of the tubes to limit the insertion parts. The slots are evenly arranged and cooperate with the insertion parts. A magnet block 1 that is magnetically attracted to the insertion part is fixedly installed at the bottom of the slot. A semi-annular groove 1 that cooperates with the semi-annular insertion block 1 is provided on the upper half of the right end of the second conveying tube. A semi-annular groove 2 that cooperates with the semi-annular insertion block 2 is provided on the lower half of the left end of the first conveying tube. A support frame for positioning and docking the first and second conveying tubes is provided at the lower ends of the first and second conveying tubes.

[0006] According to an embodiment of the present invention, the insertion component includes a square groove. Multiple square grooves are symmetrically opened on the left and right sides of the inner end of the threaded fastening sleeve. The square grooves are evenly arranged. A fixing spring is fixedly installed in the square groove. A magnetic square block is fixedly installed at the end of the fixing spring. The magnetism of the square block is opposite to that of the magnet block. A movable rod is fixedly installed at one end of the square block facing the square groove. The movable rod is connected to the threaded fastening sleeve by a sliding fit. A movable frame is provided between two movable rods that are opposite to each other on the left and right.

[0007] According to an embodiment of the present invention, the movable frame includes a horizontal rod, and two movable rods on the left and right sides are fixedly connected to each other by the horizontal rod. The horizontal rod is connected to the threaded fastening sleeve by a sliding fit. A linkage column is fixedly installed at the end of the horizontal rod facing the connection between the first conveying pipe and the second conveying pipe. The linkage column is connected to the threaded fastening sleeve by a sliding fit.

[0008] According to an embodiment of the present invention, the extrusion part one includes a semi-ring fluororubber plate, and semi-ring fluororubber plates are fixedly installed at the opposite ends of the upper and lower linkage columns. A receiving groove is opened at the lower end of the upper semi-ring fluororubber plate, and a plastic bag is fixedly installed in the receiving groove. The plastic bag is filled with glue. A needle is fixedly installed at the upper end of the lower semi-ring fluororubber plate.

[0009] According to an embodiment of the present invention, the extrusion component two includes a semi-ring plate two. The semi-ring plate two is fixedly installed at the opposite ends of the front and rear opposing linkage columns. The opposite ends of the semi-ring plate two are provided with annular grooves that cooperate with the semi-ring fluororubber plate. The rear ends of the front semi-ring fluororubber plate are provided with receiving grooves two. Plastic bags two are fixedly installed in the receiving grooves two. The plastic bags two are filled with glue. The front ends of the rear semi-ring fluororubber plate are fixedly installed with needles two.

[0010] According to an embodiment of the present invention, the support frame includes a fixed platform. A fixed platform is provided on the lower side of the first conveying pipe. A clamping frame one is fixedly installed on the fixed platform. A threaded rod is rotatably connected to the middle of the fixed platform. A movable block is connected to the right side of the threaded rod by a threaded connection. Universal wheels are evenly fixedly installed on the lower end of the movable block. A clamping frame two is fixedly installed on the movable block. A guide rod penetrating the fixed platform is fixedly installed on the left side of the movable block. A motor one is fixedly installed on the left end of the fixed platform through a motor base. The output shaft of the motor one is fixedly connected to the threaded rod through a coupling.

[0011] According to an embodiment of the present invention, the clamping frame one includes a distance control cylinder. The distance control cylinder is fixedly installed inside the fixed platform. A movable circular plate is fixedly installed at the telescopic end of the distance control cylinder. Inclined rods are symmetrically hinged to the front and rear of the movable circular plate. An arc-shaped extrusion block is hinged to the end of each inclined rod. The arc-shaped extrusion block is connected to the fixed platform in a sliding fit manner. Rubber suction cups are fixedly installed at opposite ends of the arc-shaped extrusion block. The rubber suction cups on the front and rear sides are connected through a connecting pipe. An air pump is fixedly installed at the rear end of the fixed platform. The air pump is connected to the connecting pipe through a main pipe. The structure of the clamping frame two is the same as that of the clamping frame one.

[0012] According to an embodiment of the present invention, the above-mentioned hydrogen delivery pipe sealing device also uses a hydrogen delivery pipe sealing method, comprising the following steps:

[0013] S1. Alignment and Tight Fit: Fix the No. 1 conveying pipe with the support frame and position the No. 2 conveying pipe. Move the No. 2 conveying pipe to the left until the No. 1 conveying pipe and the No. 2 conveying pipe are aligned and tight. Half-ring insert one enters half-ring groove one, and half-ring insert two enters half-ring groove two.

[0014] S2, Insertion and Fixing: At this time, rotate the threaded fastening sleeve. When the insert on the threaded fastening sleeve is aligned with the slot, the insert extends into the slot. The insert is magnetically attracted by the magnet block, thereby further fixing the insert. At the same time, the cylindrical spring drives the sector plate to extend out of the No. 1 delivery pipe to limit the left end of the threaded fastening sleeve.

[0015] S3, Sealing and Extrusion: At the same time, the inserting component drives the moving frame to move towards the central axis of the first conveying pipe and the second conveying pipe, thereby driving the extrusion component one to seal and extrude at the connection between the first conveying pipe and the second conveying pipe, and the extrusion component two to seal and extrude at the connection between the extrusion component one.

[0016] As can be seen from the above technical solutions, the present invention has the following advantages:

[0017] 1. In this invention, the linkage column drives the semi-ring fluororubber plate to move toward the axis of the first conveying pipe. The semi-ring fluororubber plate is tightly attached to the connection between the first and second conveying pipes. The needle comes into contact with the plastic bag, causing glue to overflow, thereby bonding the upper and lower semi-ring fluororubber plates together and sealing the connection between the first and second conveying pipes, so as to achieve the purpose of primary sealing of the connection between the first and second conveying pipes.

[0018] 2. In this invention, the annular groove on the second semi-ring plate cooperates with the semi-ring fluororubber plate to position the semi-ring fluororubber plate. The second needle contacts the second plastic bag, causing glue to overflow, thereby bonding the front and rear semi-ring plates on both sides. The front and rear semi-ring plates on both sides are used to squeeze and position the upper and lower semi-ring fluororubber plates, ensuring a tight fit between the semi-ring fluororubber plates. The connection points of the semi-ring fluororubber plates and the connection points of the second semi-ring plate are staggered to further prevent hydrogen leakage, thus achieving a secondary seal at the connection between the first and second conveying pipes. A tertiary seal is achieved at the connection between the first and second conveying pipes through a threaded fastening sleeve. In the entire sealing process, the primary, secondary, and tertiary seals are performed simultaneously, reducing the time required for sealing. Furthermore, the primary and secondary seals are both performed in a closed space, further ensuring the sealing performance of the connection between the first and second conveying pipes.

[0019] 3. In this invention, clamping frame one clamps and fixes the first conveying pipe, and clamping frame two clamps and fixes the second conveying pipe. Motor one drives the threaded rod to rotate, thereby moving the second conveying pipe to the left until the second conveying pipe is aligned and tightly attached to the first conveying pipe. The distance control cylinder drives the moving circular plate to move downward, thereby driving the arc-shaped extrusion block to move towards each other. The rubber suction cup on the arc-shaped extrusion block is tightly attached to the first conveying pipe. The air pump discharges the air between the rubber suction cup and the first conveying pipe. The rubber suction cup attracts the first conveying pipe, thereby fixing the first conveying pipe and ensuring a tight fit between the first and second conveying pipes, thereby improving the sealing performance of the first and second conveying pipes.

[0020] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the embodiments of this application based on a hydrogen delivery pipe sealing device and sealing method, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific embodiments. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 A front-view stereoscopic structure diagram provided according to an embodiment of the present invention is shown.

[0023] Figure 2 A schematic diagram of the front sectional planar structure provided according to an embodiment of the present invention is shown.

[0024] Figure 3 It shows Figure 2 A magnified view of a portion at point N.

[0025] Figure 4 It shows Figure 2 A magnified view of a portion of point M.

[0026] Figure 5 It shows Figure 2 A magnified view of a portion of point F.

[0027] Figure 6 A schematic diagram of the front view plane structure provided according to an embodiment of the present invention is shown.

[0028] Figure 7 It shows Figure 6 A sectional view along the AA direction.

[0029] Figure 8 It shows Figure 7 A magnified view of a portion at point E.

[0030] Figure 9 It shows Figure 6 A sectional view along the BB direction.

[0031] Figure 10 It shows Figure 9 A magnified view of a portion of point G.

[0032] Figure 11 A flowchart of the invention is shown.

[0033] The above figures include the following reference numerals:

[0034] 1. No. 1 delivery pipe; 11. Limiting groove; 12. Cylindrical spring; 13. Sector plate; 14. Semi-ring insert one; 15. Semi-ring insert two; 16. Fluororubber sleeve; 17. Slot; 18. Magnet block one; 19. Semi-ring groove one; 20. Semi-ring groove two; 21. Support frame; 211. Fixed platform; 212. Clamping frame one; 2121. Distance control cylinder; 2122. Moving circular plate; 2123. Inclined rod; 2124. Arc-shaped extrusion block; 2125. Rubber suction cup; 2126. Connecting pipe; 2127. Air pump; 2128. Main pipe; 213. Threaded rod; 214. Moving block; 215. Universal wheel ; 216. Clamping frame two; 217. Guide rod; 218. Motor one; 2. No. 2 conveying pipe; 3. Fastening unit; 31. Threaded fastening sleeve; 32. Insertion piece; 321. Square groove; 322. Fixed spring; 323. Square block; 324. Moving rod; 33. Moving frame; 331. Horizontal rod; 332. Linkage column; 34. Extrusion part one; 341. Semi-ring fluororubber plate; 342. Receiving groove one; 343. Plastic bag one; 344. Needle one; 35. Extrusion part two; 351. Semi-ring plate two; 352. Annular groove; 353. Receiving groove two; 354. Plastic bag two; 355. Needle two. Detailed Implementation

[0035] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] See Figure 1 and Figure 2A hydrogen delivery pipe sealing device includes a first delivery pipe 1, a second delivery pipe 2, and a fastening unit 3. The fastening unit 3 is disposed on the first delivery pipe 1 and is used to connect the first delivery pipe 1 and the second delivery pipe 2. The second delivery pipe 2 is located at the right end of the first delivery pipe 1. The fastening unit 3 includes a threaded fastening sleeve 31. The outer end of the first delivery pipe 1 is threadedly connected to the threaded fastening sleeve 31 for connecting the first delivery pipe 1 and the second delivery pipe 2. The inner end of the threaded fastening sleeve 31 is symmetrically provided with fastening sleeves on the left and right sides. The limiting insert 32 is equipped with a movable frame 33. Each of the two vertically opposite movable frames 33 has a first extrusion member 34 fixedly installed at its opposite ends to seal and compress the upper and lower ends of the first conveying pipe 1 and the second conveying pipe 2. Each of the two front-to-back opposite movable frames 33 has a second extrusion member 35 fixedly installed at its opposite ends to seal and compress the front and rear ends of the first extrusion member 34. A limiting groove 11 is evenly formed on the left outer end of the first conveying pipe 1. A cylindrical spring 12 is fixedly installed within the limiting groove 11, and a threaded part is fixedly installed at the end of the cylindrical spring 12. A sector-shaped plate 13 limits the left end of the fastening sleeve 31. A semi-ringed insert 14 is fixedly installed on the upper right half of the first conveying pipe 1 to limit the first conveying pipe 1. A semi-ringed insert 25 is fixedly installed on the lower left half of the second conveying pipe 2 to limit the second conveying pipe 2. Fluororubber sleeves 16 are fixedly installed on the outer ends of both the semi-ringed insert 14 and the second conveying pipe 2 to seal between the semi-ringed insert 14 and the second conveying pipe 2, and between the semi-ringed insert 25 and the first conveying pipe 1. Multiple [unclear] openings are provided on the outer ends of both the first conveying pipe 1 and the second conveying pipe 2. The slots 17 limit the insertion part 32. The slots 17 are evenly arranged and cooperate with the insertion part 32. The bottom of the slot 17 is fixedly installed with a magnet block 18 that is magnetically attracted to the insertion part 32. The upper half of the right end of the second conveying pipe 2 is provided with a semi-annular groove 19 that cooperates with the semi-annular insertion block 14. The lower half of the left end of the first conveying pipe 1 is provided with a semi-annular groove 20 that cooperates with the semi-annular insertion block 15. The lower ends of the first conveying pipe 1 and the second conveying pipe 2 are jointly provided with a support frame 21 for positioning and docking the first conveying pipe 1 and the second conveying pipe 2.The first conveying pipe 1 is fixed by the support frame 21, and the second conveying pipe 2 is positioned. The second conveying pipe 2 is moved to the left until the first conveying pipe 1 and the second conveying pipe 2 are aligned and tightly attached. The first semi-annular insert 14 enters the first semi-annular groove 19, and the second semi-annular insert 15 enters the second semi-annular groove 20. The fluororubber sleeve 16 ensures the sealing effect at the connection. At this time, the threaded fastening sleeve 31 is rotated. When the insert 32 on the threaded fastening sleeve 31 is aligned with the slot 17, the insert 32 extends into the slot 17. The magnetic block 18 attracts the insert 32, thereby further securing the insert 32. The insertion component 32 drives the moving frame 33 to move towards the central axis of the first conveying pipe 1 and the second conveying pipe 2, thereby driving the extrusion component 34 to seal and extrude the connection between the first conveying pipe 1 and the second conveying pipe 2. The extrusion component 35 then seals and extrudes the connection between the extrusion component 34 and the extrusion component 35, ensuring the sealing effect of the extrusion component 34. At the same time, the cylindrical spring 12 drives the sector plate 13 to extend out of the first conveying pipe 1, limiting the left end of the threaded fastening sleeve 31. With the cooperation of the insertion component 32 and the slot 17, the threaded fastening sleeve 31 is further limited to prevent it from rotating due to external force.

[0037] See Figure 3 The insertion component 32 includes a square groove 321. Multiple square grooves 321 are symmetrically arranged on the left and right sides of the inner end of the threaded fastening sleeve 31. The square grooves 321 are evenly arranged. A fixing spring 322 is fixedly installed in the square groove 321. A magnetic square block 323 is fixedly installed at the end of the fixing spring 322. The magnetism of the square block 323 is opposite to that of the magnet block 18. A moving rod 324 is fixedly installed at the end of the square block 323 facing the square groove 321. The moving rod 324 is connected to the threaded fastening sleeve 31 by a sliding fit. A moving frame 33 is provided between the two moving rods 324 facing each other. When the square block 323 is aligned with the slot 17, the fixing spring 322 drives the square block 323 to extend out of the square groove 321 and enter the slot 17. The magnet block 18 is magnetically attracted to the square block 323. The square block 323 drives the moving rod 324 and the moving frame 33 to move towards the axis of the first conveying pipe 1.

[0038] See Figure 3 and Figure 4 The movable frame 33 includes a horizontal rod 331. The horizontal rod 331 is fixedly connected to two opposing movable rods 324. The horizontal rod 331 is connected to the threaded fastening sleeve 31 in a sliding fit. A linkage column 332 is fixedly installed at the end of the horizontal rod 331 facing the connection between the first conveying pipe 1 and the second conveying pipe 2. The linkage column 332 is connected to the threaded fastening sleeve 31 in a sliding fit. The square block 323 drives the movable rods 324 and the horizontal rod 331 to move towards the axis of the first conveying pipe 1, thereby driving the linkage column 332 to move towards the axis of the first conveying pipe 1.

[0039] See Figure 4 , Figure 8 and Figure 10 The extrusion component 34 includes a semi-ring fluororubber plate 341. Semi-ring fluororubber plates 341 are fixedly installed at opposite ends of the upper and lower opposing linkage columns 332. Each upper semi-ring fluororubber plate 341 has a receiving groove 342 at its lower end, containing a plastic bag 343 filled with glue. A needle 344 is fixedly installed at the upper end of each lower semi-ring fluororubber plate 341. The linkage column 332 drives the semi-ring fluororubber plate 341 to move towards the axis of the first conveying pipe 1. The semi-ring fluororubber plate 341 is tightly attached to the connection between the first conveying pipe 1 and the second conveying pipe 2. The needle 344 contacts the plastic bag 343, causing glue to overflow, thus bonding the upper and lower semi-ring fluororubber plates 341 together and sealing the connection between the first and second conveying pipes.

[0040] See Figure 4 , Figure 9 and Figure 10 The extrusion component 35 includes a semi-ring plate 351. Semi-ring plates 351 are fixedly installed at opposite ends of the front and rear opposing linkage columns 332. Annular grooves 352 that mate with semi-ring fluororubber plates 341 are formed at opposite ends of the semi-ring plates 351. Receiving grooves 353 are formed at the rear ends of the front semi-ring fluororubber plates 341, and plastic bags 354 filled with glue are fixedly installed within these grooves. Needles 355 are fixedly installed at the front ends of the rear semi-ring fluororubber plates 341. The extrusion component 351... The annular groove 352 on 51 engages with the semi-annular fluororubber plate 341 to position the semi-annular fluororubber plate 341. The needle 355 contacts the plastic bag 354, causing glue to overflow, thereby bonding the semi-annular plates 351 on the front and rear sides together. The semi-annular plates 351 on the front and rear sides are used to squeeze and position the semi-annular fluororubber plates 341 on the upper and lower sides, ensuring a tight fit between the semi-annular fluororubber plates 341. The connection points of the semi-annular fluororubber plates 341 and the connection points of the semi-annular plates 351 are staggered to further prevent hydrogen leakage.

[0041] See Figure 2The support frame 21 includes a fixed platform 211. A fixed platform 211 is provided on the lower side of the first conveying pipe 1. A clamping frame 212 is fixedly installed on the fixed platform 211. A threaded rod 213 is rotatably connected to the middle of the fixed platform 211. A movable block 214 is connected to the right side of the threaded rod 213 by a threaded connection. Universal wheels 215 are evenly fixedly installed on the lower end of the movable block 214. A clamping frame 216 is fixedly installed on the movable block 214. A through-mounted fixed platform is fixedly installed on the left side of the movable block 214. The guide rod 217 of 211 and the left end of the fixed platform 211 are fixedly installed with motor 218 via motor base. The output shaft of motor 218 is fixedly connected to threaded rod 213 via coupling. The first conveying pipe 1 is clamped and fixed by clamping frame 212 and the second conveying pipe 2 is clamped and fixed by clamping frame 216. Motor 218 drives threaded rod 213 to rotate, thereby driving the second conveying pipe 2 to move to the left until the second conveying pipe 2 is aligned and close to the first conveying pipe 1.

[0042] See Figure 5 and Figure 9 The clamping frame 212 includes a distance control cylinder 2121. The distance control cylinder 2121 is fixedly installed inside the fixed platform 211. A movable circular plate 2122 is fixedly installed at the telescopic end of the distance control cylinder 2121. Inclined rods 2123 are symmetrically hinged to the front and rear of the movable circular plate 2122. Arc-shaped extrusion blocks 2124 are hinged to the ends of the inclined rods 2123. The arc-shaped extrusion blocks 2124 are connected to the fixed platform 211 by a sliding fit. Rubber suction cups 2125 are fixedly installed at opposite ends of the arc-shaped extrusion blocks 2124. The rubber suction cups 2125 on both the front and rear sides are connected by a connecting pipe 2126. The fixed platform 211... An air pump 2127 is fixedly installed at the rear end. The air pump 2127 is connected to the connecting pipe 2126 through the main pipe 2128. The structure of the second clamping frame 216 is the same as that of the first clamping frame 212. The moving circular plate 2122 is driven to move downward by the distance control cylinder 2121, thereby driving the arc-shaped extrusion block 2124 to move towards each other. The rubber suction cup 2125 on the arc-shaped extrusion block 2124 is in close contact with the first conveying pipe 1. The air pump 2127 discharges the air between the rubber suction cup 2125 and the first conveying pipe 1, and the rubber suction cup 2125 attracts the first conveying pipe 1, thereby fixing the first conveying pipe 1.

[0043] See Figure 11 The aforementioned hydrogen delivery pipe sealing device also employs a hydrogen delivery pipe sealing method, comprising the following steps:

[0044] S1. Alignment and tight contact: Fix the first conveying pipe 1 with the support frame 21 and position the second conveying pipe 2. Move the second conveying pipe 2 to the left until the first conveying pipe 1 and the second conveying pipe 2 are aligned and tight contact. The first half-ring insert 14 enters the first half-ring groove 19 and the second half-ring insert 15 enters the second half-ring groove 20.

[0045] S2, Insertion and Fixing: At this time, rotate the threaded fastening sleeve 31. When the insertion part 32 on the threaded fastening sleeve 31 is aligned with the slot 17, the insertion part 32 extends into the slot 17. The insertion part 32 is magnetically attracted by the magnet block 18, thereby further fixing the insertion part 32. At the same time, the cylindrical spring 12 drives the sector plate 13 to extend out of the first delivery pipe 1, which limits the left end of the threaded fastening sleeve 31.

[0046] S3, Sealing and Extrusion: At the same time, the insert 32 drives the moving frame 33 to move toward the central axis of the first conveying pipe 1 and the second conveying pipe 2, thereby driving the extrusion component 34 to seal and extrude the connection between the first conveying pipe 1 and the second conveying pipe 2, and the extrusion component 35 to seal and extrude the connection between the extrusion component 34 and the extrusion component 34.

[0047] In the description of this invention, it should be understood that the terms "center," "middle," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "end," "axial," and "circumferential" 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 invention and simplifying the description, and are not intended to 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 invention.

[0048] Furthermore, the terms "first," "second," "number one," "number two," "one," and "two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0049] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0050] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A sealing device for a hydrogen delivery pipe, characterized in that... It includes a first conveying pipe (1), a second conveying pipe (2) and a fastening unit (3). The fastening unit (3) is located on the first conveying pipe (1) and is used to connect the first conveying pipe (1) and the second conveying pipe (2). The second conveying pipe (2) is located on the right end of the first conveying pipe (1). The fastening unit (3) includes a threaded fastening sleeve (31). The outer end of the first conveying pipe (1) is connected by a threaded connection to the threaded fastening sleeve (31) for docking the first conveying pipe (1) and the second conveying pipe (2). The inner end of the threaded fastening sleeve (31) is symmetrically provided with insertion parts (32) for limiting the threaded fastening sleeve (31) on the left and right sides. Each insertion part (32) is provided with a movable frame (33). The two movable frames (33) that are opposite each other are fixedly installed with an extrusion part one (34) for sealing and squeezing the upper and lower ends of the first conveying pipe (1) and the second conveying pipe (2). The two movable frames (33) that are opposite each other are fixedly installed with an extrusion part two (35) for sealing and squeezing the front and rear ends of the extrusion part one (34). The movable frame (33) includes a linkage column (332); The extrusion part two (35) includes a semi-ring plate two (351). The semi-ring plate two (351) is fixedly installed at the opposite ends of the front and rear opposing linkage columns (332). The opposite ends of the semi-ring plate two (351) are provided with annular grooves (352) that cooperate with the semi-ring fluororubber plate (341). The rear end of the front semi-ring fluororubber plate (341) is provided with a receiving groove two (353). A plastic bag two (354) is fixedly installed in the receiving groove two (353). The plastic bag two (354) is filled with glue. The front end of the rear semi-ring fluororubber plate (341) is fixedly installed with a needle two (355). The left outer end of the first conveying pipe (1) is uniformly provided with limiting grooves (11). A cylindrical spring (12) is fixedly installed in the limiting groove (11). A sector plate (13) is fixedly installed at the end of the cylindrical spring (12) to limit the left end of the threaded fastening sleeve (31). A semi-ring insert block one (14) to limit the first conveying pipe (1) is fixedly installed on the upper half of the right end of the first conveying pipe (1). A semi-ring insert block two (15) to limit the second conveying pipe (2) is fixedly installed on the lower half of the left end of the second conveying pipe (2). Both the outer ends of the first semi-ring insert (14) and the second semi-ring insert (15) are fixedly fitted with fluororubber sleeves (16) to seal between the first semi-ring insert (14) and the second conveying pipe (2) and between the second semi-ring insert (15) and the first conveying pipe (1). The outer ends of both the first conveying pipe (1) and the second conveying pipe (2) are provided with multiple slots (17) to limit the insertion parts (32). The slots (17) are evenly arranged and cooperate with the insertion parts (32). A magnet block (18) that magnetically attracts the insertion piece (32) is fixedly installed at the bottom. A semi-annular groove (19) that cooperates with the semi-annular insertion block (14) is opened on the upper half of the right end of the second conveying pipe (2). A semi-annular groove (20) that cooperates with the semi-annular insertion block (15) is opened on the lower half of the left end of the first conveying pipe (1). A support frame (21) for positioning and docking the first conveying pipe (1) and the second conveying pipe (2) is set together at the lower ends of the first conveying pipe (1) and the second conveying pipe (2).

2. The hydrogen delivery pipe sealing device according to claim 1, characterized in that: The insertion component (32) includes a square groove (321). Multiple square grooves (321) are symmetrically opened on the left and right sides of the inner end of the threaded fastening sleeve (31). The square grooves (321) are evenly arranged. A fixing spring (322) is fixedly installed in the square groove (321). A magnetic square block (323) is fixedly installed at the end of the fixing spring (322). The magnetism of the square block (323) is opposite to that of the magnet block (18). A moving rod (324) is fixedly installed at one end of the square block (323) facing the square groove (321). The moving rod (324) is connected to the threaded fastening sleeve (31) by a sliding fit. A moving frame (33) is provided between the two moving rods (324) that are opposite to each other on the left and right.

3. The hydrogen delivery pipe sealing device according to claim 2, characterized in that: The movable frame (33) also includes a horizontal rod (331). The two movable rods (324) on the left and right sides are fixedly connected to the horizontal rod (331). The horizontal rod (331) is connected to the threaded fastening sleeve (31) in a sliding fit. A linkage column (332) is fixedly installed at the end of the horizontal rod (331) facing the connection between the first conveying pipe (1) and the second conveying pipe (2). The linkage column (332) is connected to the threaded fastening sleeve (31) in a sliding fit.

4. A hydrogen delivery pipe sealing device according to claim 3, characterized in that: The extrusion component (34) includes a semi-ring fluororubber plate (341). The upper and lower opposing linkage columns (332) are fixedly installed with semi-ring fluororubber plates (341). The lower end of the upper semi-ring fluororubber plate (341) is provided with a receiving groove (342). A plastic bag (343) is fixedly installed in the receiving groove (342). The plastic bag (343) is filled with glue. The upper end of the lower semi-ring fluororubber plate (341) is fixedly installed with a needle (344).

5. A hydrogen delivery pipe sealing device according to claim 1, characterized in that: The support frame (21) includes a fixed platform (211). The fixed platform (211) is located on the lower side of the first conveying pipe (1). A clamping frame (212) is fixedly installed on the fixed platform (211). A threaded rod (213) is rotatably connected to the middle of the fixed platform (211). A moving block (214) is connected to the right side of the threaded rod (213) by a threaded connection. A universal wheel (215) is evenly fixedly installed at the lower end of the moving block (214). A clamping frame (216) is fixedly installed on the moving block (214). A guide rod (217) that passes through the fixed platform (211) is fixedly installed on the left side of the moving block (214). A motor (218) is fixedly installed at the left end of the fixed platform (211) through a motor seat. The output shaft of the motor (218) is fixedly connected to the threaded rod (213) through a coupling.

6. A hydrogen delivery pipe sealing device according to claim 5, characterized in that: The clamping frame (212) includes a distance control cylinder (2121). The distance control cylinder (2121) is fixedly installed inside the fixed platform (211). A movable circular plate (2122) is fixedly installed at the telescopic end of the distance control cylinder (2121). Inclined rods (2123) are symmetrically hinged to the front and rear of the movable circular plate (2122). An arc-shaped extrusion block (2124) is hinged to the end of each inclined rod (2123). The arc-shaped extrusion block (2124) is connected to the fixed platform (211) at a distance of 0. The components are connected by a sliding fit. Rubber suction cups (2125) are fixedly installed on opposite ends of the arc-shaped extrusion block (2124). The rubber suction cups (2125) on the front and rear sides are connected by a connecting pipe (2126). An air pump (2127) is fixedly installed at the rear end of the fixed platform (211). The air pump (2127) and the connecting pipe (2126) are connected by a main pipe (2128). The structure of the second clamping frame (216) is the same as that of the first clamping frame (212).

7. A hydrogen delivery pipe sealing device according to claim 1, characterized in that: The aforementioned hydrogen delivery pipe sealing device also uses a hydrogen delivery pipe sealing method, comprising the following steps: S1, Alignment and Adhesion: Fix the No. 1 conveying pipe (1) with the support frame (21) and position the No. 2 conveying pipe (2). Move the No. 2 conveying pipe (2) to the left until the No. 1 conveying pipe (1) and the No. 2 conveying pipe (2) are aligned and adhesion. The first half-ring insert (14) enters the first half-ring groove (19), and the second half-ring insert (15) enters the second half-ring groove (20). S2, Insertion and Fixing: At this time, rotate the threaded fastening sleeve (31). When the insertion part (32) on the threaded fastening sleeve (31) is aligned with the slot (17), the insertion part (32) extends into the slot (17). The insertion part (32) is magnetically attracted by the magnet block (18), thereby further fixing the insertion part (32). At the same time, the cylindrical spring (12) drives the fan-shaped plate (13) to extend out of the first conveying pipe (1) to limit the left end of the threaded fastening sleeve (31). S3, Sealing and extrusion: At the same time, the insert (32) drives the moving frame (33) to move toward the central axis of the first conveying pipe (1) and the second conveying pipe (2), thereby driving the extrusion component one (34) to seal and extrude the connection between the first conveying pipe (1) and the second conveying pipe (2), and the extrusion component two (35) to seal and extrude the connection between the extrusion component one (34).

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