A forming device for forming a hydrogen barrier material layer on an inner wall of a hydrogen resistant steel cylinder

Abstract

The application discloses a forming device for forming a hydrogen barrier material layer on the inner wall of a hydrogen-resistant steel cylinder, and relates to the technical field of forming a hydrogen barrier material layer on the inner wall of a hydrogen-resistant steel cylinder. A positioning and lifting mechanism for positioning and lifting the hydrogen-resistant steel cylinder is arranged on a workbench and between left and right vertical plates. The piston rod of a feeding oil cylinder penetrates through the left vertical plate to the right, and a moving plate is fixed on the extended end of the piston rod. A driven gear is arranged on the top surface of the driven gear and on the left and right sides of the hollow seat, and a clamping mechanism for clamping and fixing the hydrogen-resistant steel cylinder is arranged on the top surface of the driven gear. A driving mechanism for driving the driven gear to rotate around the axis of the hollow seat is further arranged on the moving plate. The hydrogen barrier material layer formed by the application has uniform thickness, and the hydrogen barrier material layer is effectively prevented from falling off from the hydrogen-resistant steel cylinder due to long-term use, thereby greatly improving the quality of the hydrogen barrier material layer formed on the inner wall of the hydrogen-resistant steel cylinder.

Description

Technical Field

[0001] This invention relates to the technical field of forming a hydrogen barrier material layer on the inner wall of a hydrogen-resistant steel cylinder, and in particular to a forming apparatus for forming a hydrogen barrier material layer on the inner wall of a hydrogen-resistant steel cylinder. Background Technology

[0002] Hydrogen storage wells are buried underground and their function is to store liquid hydrogen. A hydrogen storage well mainly consists of multiple hydrogen-resistant steel cylinders connected in series. The top of the top hydrogen-resistant steel cylinder is connected to a top cap, and the bottom of the bottom hydrogen-resistant steel cylinder is connected to a hemispherical end cap.

[0003] Because liquid hydrogen has a strong penetrating ability, even after long-term storage of liquid hydrogen in hydrogen-resistant steel cylinders, the liquid hydrogen will still permeate through the cylinders and leak to the outside. Therefore, workers in the production workshop will form a layer of hydrogen-blocking material on the inner wall of each hydrogen-resistant steel cylinder. This hydrogen-blocking material layer not only separates the liquid hydrogen from the cylinder but also prevents it from penetrating. The specific forming method includes the following steps: SI, the worker takes out a... Figure 1 The positioning component shown includes a pad 1 and a hollow column A2 fixed on the top surface of the pad 1. The height of the hollow column A2 is equal to the height of the hydrogen-resistant steel cylinder, and the top of the hollow column A2 is closed. SII, the worker took out a... Figure 2 The hydrogen-resistant steel cylinder 3 shown is placed over the hollow column A2 from top to bottom, as shown. Figure 3 As shown, the bottom surface of the hydrogen-resistant steel cylinder 3 is supported on the pad 1. At this time, the top surface of the hydrogen-resistant steel cylinder 3 is flush with the top surface of the hollow column A2, and an annular region A4 is formed between the inner wall of the hydrogen-resistant steel cylinder 3 and the outer wall of the hollow column A2. SIII. The worker aligns the injection tube 5 of the injection molding machine with the annular area A4. Figure 4 As shown, the injection molding machine is then turned on, and the molten polyethylene plastic produced by the machine is injected into the annular region A4 through the injection tube 5. After the set time has elapsed, the molten polyethylene plastic has just filled the annular region A4, thus ultimately forming a hydrogen-barrier material layer 6 on the inner wall of the hydrogen-resistant steel cylinder 3. Figure 4 As shown; SIV. The worker lifts the hydrogen-resistant steel cylinder 3 upwards to remove the hydrogen-resistant steel cylinder 3 with the formed hydrogen-barrier material layer 6. Figure 5 The diagram shows a schematic of a hydrogen barrier material layer 6 formed on the inner wall of a hydrogen-resistant steel cylinder 3. By repeating steps SI~SIV, workers can continuously form a layer of hydrogen-blocking material 6 on the inner wall of multiple hydrogen-resistant steel cylinders 3.

[0004] However, although the molding method used in the workshop can form a hydrogen-barrier material layer 6 on the inner wall of the hydrogen-resistant steel cylinder 3, it still has the following technical defects: I. In step SII, when the hydrogen-resistant steel cylinder 3 is fitted over the hollow column A2 from top to bottom, it cannot be ensured that the cross-section of the annular region A4 formed between the hydrogen-resistant steel cylinder 3 and the hollow column A2 is uniform. This results in an uneven thickness of the formed hydrogen-blocking material layer 6 (while the process requires a uniform thickness for the formed hydrogen-blocking material layer 6). Therefore, this forming method undoubtedly reduces the quality of the hydrogen-blocking material layer 6 formed on the inner wall of the hydrogen-resistant steel cylinder 3.

[0005] II. From the appendix Figure 5 As can be seen, although the hydrogen-barrier material layer 6 is attached to the hydrogen-resistant steel cylinder 3, after a period of long-term use, the hydrogen-barrier material layer 6 will detach from the hydrogen-resistant steel cylinder 3 under its own gravity (while the process requires that the hydrogen-barrier material layer 6 should not detach from the hydrogen-resistant steel cylinder 3 after a period of long-term use). Therefore, this molding method undoubtedly further reduces the quality of the hydrogen-barrier material layer 6 formed on the inner wall of the hydrogen-resistant steel cylinder 3.

[0006] Therefore, there is an urgent need for a forming device that can produce a uniform thickness of hydrogen barrier material layer, effectively prevent the hydrogen barrier material layer from falling off the hydrogen-resistant steel cylinder due to long-term use, and greatly improve the quality of forming the hydrogen barrier material layer on the inner wall of the hydrogen-resistant steel cylinder. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art and provide a forming device for forming a hydrogen barrier material layer on the inner wall of a hydrogen-resistant steel cylinder.

[0008] The objective of this invention is achieved through the following technical solution: a forming device for forming a hydrogen barrier material layer on the inner wall of a hydrogen-resistant steel cylinder, comprising a worktable, a left vertical plate and a right vertical plate respectively fixed on the left and right sides of the worktable, and a positioning and lifting mechanism for positioning and lifting the hydrogen-resistant steel cylinder is provided on the worktable and between the left vertical plate and the right vertical plate. A feed cylinder is fixedly mounted on the left end face of the left vertical plate. The piston rod of the feed cylinder extends to the right through the left vertical plate, and a moving plate is fixedly mounted on the extended end. A central hole is opened in the moving plate. A hollow seat is fixedly mounted on the top surface of the moving plate directly above the central hole. The inner hole of the hollow seat is connected to the central hole. A driven gear is rotatably mounted on the outside of the hollow seat. Clamping mechanisms for clamping and fixing hydrogen-resistant steel cylinders are provided on the top surface of the driven gear and on both the left and right sides of the hollow seat. A drive mechanism for driving the driven gear to rotate around the axis of the hollow seat is also provided on the moving plate.

[0009] The movable plate has a fixed movable support rod at its right end. The movable support rod slides to the right through the right vertical plate to support and guide the movable plate.

[0010] The diameter of the central hole of the movable plate and the inner diameter of the hollow seat are both larger than the outer diameter of the hydrogen-resistant steel cylinder.

[0011] The drive mechanism includes a main motor fixed on the bottom surface of the moving plate. The output axis of the main motor passes through the moving plate and the extension end is connected to a drive gear. The drive gear meshes with the driven gear.

[0012] The clamping mechanism on the left side includes a fixed seat fixed on the top surface of the driven gear, a lead screw rotatably installed in the fixed seat, an actuating disc fixed on the left end of the lead screw, and a locking block that can move along its length on the right end of the lead screw. An arc-shaped groove is provided on the inner end face of the locking block. The arc-shaped groove matches the outer wall of the hydrogen-resistant steel cylinder. A threaded hole is provided at the bottom of the arc-shaped groove. The threaded hole of the locking block is threadedly connected to the threaded section of the lead screw. A guide rod that slides to the left and passes through the fixed seat is fixed on the left end face of the locking block.

[0013] The two clamping mechanisms located on the driven gear are symmetrically arranged about the hollow seat.

[0014] The positioning and lifting mechanism includes a lifting cylinder fixed to the bottom surface of the workbench. The piston rod of the lifting cylinder passes through the workbench upward and a lifting plate is fixed to the extended end. A cylindrical platform and a hollow column B are sequentially fixed on the top surface of the lifting plate. The outer diameter of the cylindrical platform is equal to the inner diameter of the hydrogen-resistant steel cylinder. The cylindrical platform and the hollow column B are coaxially arranged, and the outer diameter of the hollow column B is smaller than the outer diameter of the cylindrical platform. The hollow column B is located directly below the central hole of the moving plate.

[0015] Two spinning mechanisms are provided on the left end face of the right vertical plate. The two spinning mechanisms are symmetrically positioned above and below each other. The upper spinning mechanism includes a vertical cylinder fixed on the left end face of the right vertical plate. An L-plate is fixed on the piston rod of the vertical cylinder. A rod extending to the left is fixed on the left side wall of the L-plate. A vertically positioned pressure rod is fixed on the left end of the rod. A ball head is fixed to the bottom end of the pressure rod.

[0016] The molding apparatus also includes a controller, which is electrically connected to the lifting cylinder, the feed cylinder, the vertical cylinder and the main motor via signal lines.

[0017] The present invention has the following advantages: it makes the formed hydrogen barrier material layer uniform in thickness, effectively prevents the hydrogen barrier material layer from falling off the hydrogen-resistant steel cylinder due to long-term use, and greatly improves the quality of the hydrogen barrier material layer formed on the inner wall of the hydrogen-resistant steel cylinder. Attached Figure Description

[0018] Figure 1 This is a structural diagram of a positioning component in the prior art; Figure 2 This is a structural schematic diagram of a hydrogen-resistant steel cylinder based on existing technology. Figure 3 A schematic diagram showing the hydrogen-resistant steel cylinder being fitted over the hollow column A from top to bottom; Figure 4 A schematic diagram for aligning the injection tube of the injection molding machine with the annular region A; Figure 5 A schematic diagram of the structure for forming a hydrogen-barrier material layer on the inner wall of a hydrogen-resistant steel cylinder; Figure 6 This is a schematic diagram of the structure of the present invention; Figure 7 for Figure 6 M-direction schematic diagram; Figure 8 for Figure 6 P-direction schematic diagram; Figure 9 for Figure 6 Main section diagram; Figure 10 A schematic diagram showing the connection of the movable plate, movable support rod, hollow seat, driven gear and two clamping mechanisms; Figure 11 for Figure 10 Main section diagram; Figure 12 This is a schematic diagram showing the connection between the right vertical plate and the two spinning mechanisms of the present invention; Figure 13 for Figure 12 A schematic diagram of the partial cross-section; Figure 14 This is a schematic diagram of the positioning and lifting mechanism of the present invention; Figure 15 for Figure 14 Main section diagram; Figure 16 This is a schematic diagram showing the hollow column B passing through the center hole of the moving plate and the inner hole of the hollow seat in sequence upwards; Figure 17 A schematic diagram illustrating the positioning of the steel cylinder to counteract hydrogen. Figure 18 A schematic diagram showing the hydrogen-resistant steel cylinder being locked and fixed between the locking blocks of two clamping mechanisms; Figure 19 A schematic diagram showing how a hydrogen-barrier material layer is formed on the inner wall of a hydrogen-resistant steel cylinder; Figure 20 This is a schematic diagram showing the complete separation of the hollow column B from the hydrogen barrier material layer. Figure 21A schematic diagram showing the cylindrical surfaces of the top and bottom short sections of the hydrogen-resistant steel cylinder in contact with the cylindrical surfaces of the pressure rods of the two spinning mechanisms, respectively. Figure 22 A schematic diagram showing how the pressure rods of two spinning mechanisms compress both the top and bottom short sections into annular sections. Figure 23 A schematic diagram of the extruded annular inverted portion; Figure 24 This is a schematic diagram showing how the upper and lower ends of the hydrogen barrier material layer are secured by two annular inward-turning sections. Figure 25 A schematic diagram showing how the pressure rod and ball head can be separated from the annular inward-turning part; Figure 26 This is a schematic diagram of removing a hydrogen-resistant steel cylinder with a hydrogen-barrier material layer. In the picture: 1-Plate, 2-Hollow column A, 3-Hydrogen-resistant steel cylinder, 4-Annular area A, 5-Injection-molded pipe, 6-Hydrogen-blocking material layer; 7-Workbench, 8-Left vertical plate, 9-Right vertical plate, 10-Positioning and lifting mechanism, 11-Feed cylinder, 12-Moving plate, 13-Center hole, 14-Hollow seat, 15-Driven gear, 16-Clamping mechanism, 17-Modible support rod, 18-Main motor, 19-Drive gear; 20-Fixed base, 21-Lead screw, 22-Actuating plate, 23-Locking block, 24-Arc groove; 25-Lifting cylinder, 26-Lifting plate, 27-Cylindrical platform, 28-Hollow column B; 29-Spinning mechanism, 30-Vertical cylinder, 31-Rod, 32-Pressure rod, 33-Ball head, 34-Annular area B, 35-Annular part, 36-Annular inward turning part. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description: like Figures 6-15 As shown, a forming device for forming a hydrogen barrier material layer on the inner wall of a hydrogen-resistant steel cylinder includes a worktable 7, a left vertical plate 8 and a right vertical plate 9 respectively fixed on the left and right sides of the worktable 7, and a positioning and lifting mechanism 10 for positioning and lifting the hydrogen-resistant steel cylinder 3 is provided on the worktable 7 and between the left vertical plate 8 and the right vertical plate 9. A feed cylinder 11 is fixedly mounted on the left end face of the left vertical plate 8. The piston rod of the feed cylinder 11 extends to the right through the left vertical plate 8, and a moving plate 12 is fixedly mounted on the extended end. A central hole 13 is opened in the moving plate 12. A hollow seat 14 is fixedly mounted on the top surface of the moving plate 12 directly above the central hole 13. The inner hole of the hollow seat 14 is connected to the central hole 13. A driven gear 15 is rotatably mounted on the outside of the hollow seat 14. A clamping mechanism 16 for clamping and fixing the hydrogen-resistant steel cylinder 3 is provided on the top surface of the driven gear 15 and on the left and right sides of the hollow seat 14. The two clamping mechanisms 16 on the driven gear 15 are symmetrically arranged about the left and right sides of the hollow seat 14.

[0020] The clamping mechanism 16 located on the left side includes a fixed seat 20 fixed on the top surface of the driven gear 15, a lead screw 21 rotatably installed in the fixed seat 20, an actuating disc 22 fixed on the left end of the lead screw 21, and a locking block 23 movable along its length on the right end of the lead screw 21; an arc-shaped groove 24 is formed on the inner end face of the locking block 23, the arc-shaped groove 24 cooperates with the outer wall of the hydrogen-resistant steel cylinder 3, a threaded hole is formed at the bottom of the arc-shaped groove 24, and the threaded hole of the locking block 23 is threadedly connected to the threaded section of the lead screw 21; a guide rod that slides to the left and penetrates the fixed seat 20 is fixed on the left end face of the locking block 23.

[0021] The movable plate 12 is also provided with a drive mechanism for driving the driven gear 15 to rotate around the axis of the hollow seat 14. The drive mechanism includes a main motor 18 fixed on the bottom surface of the movable plate 12. The output axis of the main motor 18 passes through the movable plate 12 and the extension end is connected to the drive gear 19. The drive gear 19 meshes with the driven gear 15.

[0022] A movable support rod 17 is fixed on the right end of the movable plate 12. The movable support rod 17 slides to the right and passes through the right upright plate 9 to support and guide the movable plate 12. The diameter of the central hole 13 of the movable plate 12 and the inner diameter of the hollow seat 14 are both larger than the outer diameter of the hydrogen-resistant steel cylinder 3.

[0023] The positioning and lifting mechanism 10 includes a lifting cylinder 25 fixed to the bottom surface of the workbench 7. The piston rod of the lifting cylinder 25 extends upward through the workbench 7 and a lifting plate 26 is fixed to its extension end. A cylindrical platform 27 and a hollow column B28 are sequentially fixed on the top surface of the lifting plate 26. The outer diameter of the cylindrical platform 27 is equal to the inner diameter of the hydrogen-resistant steel cylinder 3. The cylindrical platform 27 and the hollow column B28 are coaxially arranged, and the outer diameter of the hollow column B28 is smaller than the outer diameter of the cylindrical platform 27. The hollow column B28 is located directly below the center hole 13 of the moving plate 12.

[0024] Two spinning mechanisms 29 are provided on the left end face of the right vertical plate 9. The two spinning mechanisms 29 are symmetrically positioned above and below each other. The upper spinning mechanism 29 includes a vertical cylinder 30 fixed on the left end face of the right vertical plate 9. An L-plate is fixed on the piston rod of the vertical cylinder 30. A rod 31 extending to the left is fixed on the left side wall of the L-plate. A vertically arranged pressure rod 32 is fixed on the left end of the rod 31. A ball head 33 is fixed to the bottom end of the pressure rod 32.

[0025] The molding device also includes a controller, which is electrically connected to the lifting cylinder 25, the feeding cylinder 11, the vertical cylinder 30 and the main motor 18 via signal lines. The operator can control the extension or retraction of the piston rods of the lifting cylinder 25, the feeding cylinder 11 and the vertical cylinder 30 through the controller. At the same time, the operator can also control the start or stop of the main motor 18, thereby facilitating the operator's operation.

[0026] A method for forming a hydrogen-barrier material layer on the inner wall of a hydrogen-resistant steel cylinder, comprising the following steps: S1, positioning of the anti-hydrogen steel cylinder 3, the specific operation steps are as follows: S11, the piston rod of the lifting cylinder 25 of the control positioning and lifting mechanism 10 extends upward, driving the lifting plate 26 to move upward, and the lifting plate 26 drives the cylindrical platform 27 and the hollow column B28 to move upward synchronously; when the piston rod of the lifting cylinder 25 is fully extended, the hollow column B28 sequentially passes through the center hole 13 of the moving plate 12 and the inner hole of the hollow seat 14, as shown. Figure 16 As shown; S12, The worker takes out a... Figure 2 The hydrogen-resistant steel cylinder 3 shown; S13. The worker inserts the lower end of the hydrogen-resistant steel cylinder 3 through the inner hole of the hollow seat 14 and the center hole 13 of the moving plate 12 from top to bottom. Finally, the lower end of the hydrogen-resistant steel cylinder 3 is fitted onto the outside of the cylindrical platform 27 of the positioning and lifting mechanism 10, and the hydrogen-resistant steel cylinder 3 is supported on the top surface of the lifting plate 26. Since the outer diameter of the cylindrical platform 27 is equal to the inner diameter of the hydrogen-resistant steel cylinder 3, and the cylindrical platform 27 is coaxially arranged with the hollow column B28, the positioning of the hydrogen-resistant steel cylinder 3 is achieved. Figure 17 As shown, at this time, the hollow column B28 is inside the hydrogen-resistant steel cylinder 3, and the inner wall of the hydrogen-resistant steel cylinder 3 and the outer wall of the hollow column B28 form an annular region B34. S2. Clamp and fix the hydrogen-resistant steel cylinder 3: The worker uses his left hand to rotate the actuation plate 22 of the left clamping mechanism 16. The actuation plate 22 drives the lead screw 21 to rotate. At this time, the locking block 23 moves along the lead screw 21 toward the hydrogen-resistant steel cylinder 3, and the arc groove 24 of the locking block 23 of the left clamping mechanism 16 moves toward the hydrogen-resistant steel cylinder 3. At the same time, the worker uses his right hand to rotate the actuation disk 22 of the right clamping mechanism 16, so that the arc groove 24 of the locking block 23 of the right clamping mechanism 16 moves toward the hydrogen-resistant steel cylinder 3. When the worker rotates the dial 22 again, the hydrogen-resistant steel cylinder 3 is locked and fixed between the locking block 23 of the left clamping mechanism 16 and the locking block 23 of the right clamping mechanism 16, as follows: Figure 18 As shown, this effectively secures the hydrogen-resistant steel cylinder 3. S3. A hydrogen-barrier material layer 6 is formed on the inner wall of the hydrogen-resistant steel cylinder 3. The specific operation steps are as follows: S31. The main motor 18 of the control drive mechanism starts, and the main motor 18 drives the drive gear 19 to rotate. The drive gear 19 drives the driven gear 15 to rotate synchronously around the axis of the hollow seat 14. The driven gear 15 drives the two clamping mechanisms 16 on it to rotate synchronously, which in turn drives the hydrogen-resistant steel cylinder 3 that is clamped and fixed to rotate synchronously. S32. The worker aligns the injection tube 5 of the injection molding machine with the annular area B34, such as... Figure 19 As shown, the injection molding machine is then turned on, and the molten polyethylene plastic produced by the machine is injected into the annular region B34 through the injection tube 5. After the set time has elapsed, the worker immediately removes the injection tube 5. At this point, the molten polyethylene plastic has just filled the annular region B34, thus ultimately forming a hydrogen-barrier material layer 6 on the inner wall of the hydrogen-resistant steel cylinder 3. Figure 19 As shown, at this time, the top surface of the hydrogen barrier material layer 6 is just flush with the top surface of the hollow column B28. Meanwhile, there is no hydrogen barrier material layer 6 on the inner wall of the top and bottom short sections of the hydrogen-resistant steel cylinder 3. As can be seen from steps S1 to S3, when the lower end of the hydrogen-resistant steel cylinder 3 is fitted onto the outside of the cylindrical platform 27 of the positioning and lifting mechanism 10, since the outer diameter of the cylindrical platform 27 is equal to the inner diameter of the hydrogen-resistant steel cylinder 3, and the cylindrical platform 27 is coaxially arranged with the hollow column B28, the cross-section of the annular region B34 formed between the inner wall of the hydrogen-resistant steel cylinder 3 and the outer wall of the hollow column B28 is uniform.

[0027] Therefore, it can be seen that the thickness of the hydrogen barrier material layer 6 formed within the annular region B34 is also uniform, meeting the process requirements, compared to... Figures 1-5 The molding method shown greatly improves the quality of forming the hydrogen barrier material layer 6 on the inner wall of the hydrogen-resistant steel cylinder 3.

[0028] S4. After the hydrogen-blocking material layer 6 is formed on the inner wall of the hydrogen-resistant steel cylinder 3, the worker controls the piston rod of the lifting cylinder 25 of the positioning and lifting mechanism 10 to retract downwards. The piston rod drives the lifting plate 26 to move downwards synchronously. The lifting plate 26 drives the cylindrical platform 27 and the hollow column B28 to move downwards synchronously, so that the hollow column B28 gradually separates from the hydrogen-blocking material layer 6. When the piston rod of the lifting cylinder 25 is fully retracted, the hollow column B28 is completely separated from the hydrogen-blocking material layer 6. Figure 20 As shown; S5. The worker controls the piston rod of the feed cylinder 11 to extend to the right. The piston rod drives the moving plate 12 to move to the right. The moving plate 12 drives the hollow seat 14, driven gear 15, clamping mechanism 16 and the clamped hydrogen-resistant steel cylinder 3 to move to the right synchronously. At this time, the top and bottom short sections of the rotating hydrogen-resistant steel cylinder 3 move toward the pressure rods 32 of the two spinning mechanisms 29 respectively. As the piston rod of the feed cylinder 11 continues to extend to the right, the cylindrical surfaces of the top and bottom short sections of the hydrogen-resistant steel cylinder 3 come into contact with the cylindrical surfaces of the pressure rods 32 of the two spinning mechanisms 29, respectively. Figure 21 As shown; As the piston rod of the feed cylinder 11 continues to extend to the right, the pressure rods 32 of the two spinning mechanisms 29 radially compress the top and bottom short sections, respectively. When the piston rod of the feed cylinder 11 is fully extended, the pressure rods 32 of the two spinning mechanisms 29 respectively compress the top and bottom short sections into horizontal annular portions 35, as shown. Figure 22 As shown, the two annular portions 35 are in contact with the top and bottom surfaces of the hydrogen barrier material layer 6, respectively. S6. Control the vertical cylinder 30 of the upper spinning mechanism 29 to retract downwards. The piston rod drives the L plate to move downwards. The L plate drives the rod 31 and the pressure rod 32 to move downwards synchronously. The pressure rod 32 drives the ball head 33 on it to move downwards synchronously. The ball head 33 presses the rotating annular part 35 downwards, so that the annular part 35 is deformed against the inner wall of the hydrogen barrier material layer 6. When the piston rod of the vertical cylinder 30 of the upper spinning mechanism 29 is fully retracted, the annular inward-turned part 36 is extruded, as shown. Figure 23 As shown, the annular inward-turning part 36 secures the upper end of the hydrogen barrier material layer 6. S7. The worker controls the vertical cylinder 30 of the lower spinning mechanism 29 to retract upwards, thereby extruding the annular inward-turning part 36. This annular inward-turning part 36 secures the lower end of the hydrogen barrier material layer 6, such as... Figure 24 As shown; S8. Remove the hydrogen-resistant steel cylinder 3 with the hydrogen barrier material layer 6 formed. The specific operation steps are as follows: S81, control the main motor 18 to shut down. At this time, both the hydrogen-resistant steel cylinder 3 and the hydrogen-blocking material layer 6 will stop rotating. S82, the piston rods of the vertical cylinders 30 controlling the two spinning mechanisms 29 extend so that the pressure rod 32 and the ball head 33 separate from the annular inward turning part 36, such as Figure 25 As shown; S83. The piston rod of the feed cylinder 11 retracts to the left, causing the moving plate 12 to move to the left. The moving plate 12 then moves the hollow seat 14, driven gear 15, clamping mechanism 16, and the clamped hydrogen-resistant steel cylinder 3 to move to the left simultaneously. After the piston rod of the feed cylinder 11 is fully retracted, the worker rotates the actuating discs 22 of the two clamping mechanisms 16 in the opposite direction to separate the locking block 23 from the hydrogen-resistant steel cylinder 3. Then, the worker lifts the hydrogen-resistant steel cylinder 3 from bottom to top, thus removing the hydrogen-resistant steel cylinder 3 with the hydrogen-blocking material layer 6 formed on it. The removal direction is as follows: Figure 26 As indicated by the solid arrow in the center; S9. By repeating steps S1 to S8, workers can continuously form a layer of hydrogen-blocking material 6 on the inner wall of multiple hydrogen-resistant steel cylinders 3.

[0029] In step S3, a hydrogen barrier material layer 6 is first formed on the inner wall of the hydrogen-resistant steel cylinder 3. Then, in step S5, by controlling the piston rod of the feed cylinder 11 to extend to the right, the upper and lower ends of the hydrogen-resistant steel cylinder 3 are respectively squeezed into annular portions 35 by the pressure rods 32 of the two spinning mechanisms 29. Finally, in steps S6 to S7, by controlling the piston rods of the vertical cylinders 30 of the two spinning mechanisms 29 to retract, the two annular portions 35 are respectively squeezed into annular inward-turned portions 36 by the ball heads 33 of the two spinning mechanisms 29.

[0030] Therefore, this molding device only needs the cooperation of the feeding cylinder 11 and the two spinning mechanisms 29 to extrude and form two annular inward-turned portions 36 at the upper and lower ends of the hydrogen-resistant steel cylinder 3, respectively. These two annular inward-turned portions 36 then secure the upper and lower ends of the hydrogen-blocking material layer 6. In other words, the annular inward-turned portions 36 formed at the upper and lower ends of the hydrogen-resistant steel cylinder 3 firmly fix the upper and lower ends of the hydrogen-blocking material layer 6, effectively preventing the hydrogen-blocking material layer 6 from falling off the hydrogen-resistant steel cylinder 3 due to long-term use. Compared to... Figures 1-5 The molding method shown further improves the quality of forming the hydrogen barrier material layer 6 on the inner wall of the hydrogen-resistant steel cylinder 3.

Claims

1. A forming apparatus for forming a hydrogen-barrier material layer on the inner wall of a hydrogen-resistant steel cylinder, characterized in that: It includes a workbench (7), a left vertical plate (8) and a right vertical plate (9) respectively fixed on the left and right sides of the workbench (7), and a positioning and lifting mechanism (10) for positioning and lifting the hydrogen-resistant steel cylinder (3) is provided on the workbench (7) and between the left vertical plate (8) and the right vertical plate (9). A feed cylinder (11) is fixedly mounted on the left end face of the left vertical plate (8). The piston rod of the feed cylinder (11) passes through the left vertical plate (8) to the right, and a moving plate (12) is fixedly mounted on the extended end. A central hole (13) is opened in the moving plate (12). A hollow seat (14) is fixedly mounted on the top surface of the moving plate (12) directly above the central hole (13). The inner hole of the hollow seat (14) is connected to the central hole (13). A driven gear (15) is rotatably mounted on the outside of the hollow seat (14). A clamping mechanism (16) for clamping and fixing the hydrogen-resistant steel cylinder (3) is provided on the top surface of the driven gear (15) and on the left and right sides of the hollow seat (14). A driving mechanism for driving the driven gear (15) to rotate around the axis of the hollow seat (14) is also provided on the moving plate (12).

2. The forming apparatus for forming a hydrogen-barrier material layer on the inner wall of a hydrogen-resistant steel cylinder according to claim 1, characterized in that: The right end of the movable plate (12) has a movable support rod (17) which slides to the right through the right upright plate (9) to support and guide the movable plate (12).

3. The forming apparatus for forming a hydrogen-barrier material layer on the inner wall of a hydrogen-resistant steel cylinder according to claim 1, characterized in that: The diameter of the central hole (13) of the movable plate (12) and the inner diameter of the hollow seat (14) are both greater than the outer diameter of the hydrogen-resistant steel cylinder (3).

4. The forming apparatus for forming a hydrogen-barrier material layer on the inner wall of a hydrogen-resistant steel cylinder according to claim 1, characterized in that: The drive mechanism includes a main motor (18) fixed on the bottom surface of the moving plate (12). The output axis of the main motor (18) passes through the moving plate (12) and the extension end is connected to a drive gear (19). The drive gear (19) meshes with the driven gear (15).

5. A forming apparatus for forming a hydrogen-barrier material layer on the inner wall of a hydrogen-resistant steel cylinder according to claim 4, characterized in that: The clamping mechanism (16) located on the left side includes a fixed seat (20) fixed on the top surface of the driven gear (15) and a lead screw (21) rotatably installed in the fixed seat (20). A dial (22) is fixed on the left end of the lead screw (21), and a locking block (23) that can move along its length is provided on the right end of the lead screw (21). An arc-shaped groove (24) is provided on the inner end face of the locking block (23). The arc-shaped groove (24) is matched with the outer wall of the hydrogen-resistant steel cylinder (3). A threaded hole is provided at the bottom of the arc-shaped groove (24). The threaded hole of the locking block (23) is threadedly connected to the threaded section of the lead screw (21). A guide rod that slides to the left and passes through the fixed seat (20) is fixed on the left end face of the locking block (23).

6. The forming apparatus for forming a hydrogen-barrier material layer on the inner wall of a hydrogen-resistant steel cylinder according to claim 5, characterized in that: Two clamping mechanisms (16) located on the driven gear (15) are symmetrically arranged about the hollow seat (14).

7. A forming apparatus for forming a hydrogen-barrier material layer on the inner wall of a hydrogen-resistant steel cylinder according to claim 6, characterized in that: The positioning and lifting mechanism (10) includes a lifting cylinder (25) fixed on the bottom surface of the workbench (7). The piston rod of the lifting cylinder (25) passes through the workbench (7) upward and a lifting plate (26) is fixed on the extended end. A cylindrical platform (27) and a hollow column B (28) are fixed sequentially on the top surface of the lifting plate (26). The outer diameter of the cylindrical platform (27) is equal to the inner diameter of the hydrogen-resistant steel cylinder (3). The cylindrical platform (27) and the hollow column B (28) are coaxially arranged, and the outer diameter of the hollow column B (28) is smaller than the outer diameter of the cylindrical platform (27). The hollow column B (28) is located directly below the central hole (13) of the moving plate (12).

8. A forming apparatus for forming a hydrogen-barrier material layer on the inner wall of a hydrogen-resistant steel cylinder according to claim 7, characterized in that: Two spinning mechanisms (29) are provided on the left end face of the right vertical plate (9). The two spinning mechanisms (29) are symmetrically positioned above and below each other. The upper spinning mechanism (29) includes a vertical cylinder (30) fixed on the left end face of the right vertical plate (9). An L plate is fixed on the piston rod of the vertical cylinder (30). A rod (31) extending to the left is fixed on the left side wall of the L plate. A vertically arranged pressure rod (32) is fixed on the left end of the rod (31). A ball head (33) is fixed to the bottom end of the pressure rod (32).

9. A forming apparatus for forming a hydrogen-barrier material layer on the inner wall of a hydrogen-resistant steel cylinder according to claim 8, characterized in that: The molding apparatus also includes a controller, which is electrically connected to the lifting cylinder (25), the feeding cylinder (11), the vertical cylinder (30) and the main motor (18) via signal lines.

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