Connecting equipment and method for flexible non-metal hydrogen conveying pipeline

Abstract

The invention discloses a connecting device and method for a flexible nonmetal hydrogen conveying pipeline, and particularly relates to the field of hydrogen conveying pipelines, the connecting device comprises a supporting frame, a moving mechanism is arranged on the front side of the top of the supporting frame, and the moving mechanism comprises a pair of pipeline clamping devices which are arranged left and right and can move; and a hydrogen conveying pipeline is clamped on the inner side of the pipeline clamping device. When the ends of the hydrogen conveying pipelines enter the circular ring shell and then stop temporarily, the cleaning liquid in the liquid storage bottle is pumped through the pump body, then the cleaning liquid is sprayed to the surfaces of the hydrogen conveying pipelines on the corresponding sides through the inclined spray heads, and then the moving mechanism drives the two hydrogen conveying pipelines to move oppositely again; the butt joint surface of the pipeline is in contact with the surface of the annular soft brush; then the output end of a third motor drives a second gear to rotate, the second gear drives an annular gear to rotate, the annular gear drives annular soft brushes on the two sides to rotate, and the butt joint face of the hydrogen conveying pipeline is rotationally cleaned; the effect of cleaning the butt joint face of the pipeline is achieved, and the strength of the butt joint position of the pipeline is improved.

Description

Technical Field

[0001] This invention relates to the field of hydrogen pipeline technology, specifically a connection device and method for flexible non-metallic hydrogen pipelines. Background Technology

[0002] In the field of hydrogen energy storage and transportation, the connection quality of hydrogen pipelines is directly related to the safety and reliability of the system. Flexible pipelines such as reinforced thermoplastic composite pipes (RTP pipes) are widely used due to their advantages such as resistance to hydrogen permeation and lightweight. Their connection often adopts the hot melt butt welding process, which softens and fuses the thermoplastic material at the pipe joint surface by heating, forming a sealed joint with basic strength.

[0003] During the pipe connection process, the pipe mating surfaces need to be cleaned first, then the pipe mating surfaces are heat-fused and then joined. After joining, the protruding parts of the pipe connection need to be machined, then the pipe connection is wrapped with composite material, and finally the connection is hot-pressed.

[0004] Before the pipeline is heat-fused, the cleanliness of the pipeline mating surface is one of the core factors determining the joint quality. If dust, oil, oxide layer or cutting debris remain on the mating surface, these impurities will cause defects such as bubbles and incomplete fusion at the fusion interface during the heat fusion process. In severe cases, it may cause high-pressure hydrogen leakage or even joint breakage due to stress concentration. Therefore, the inventors provide a connection device and method for flexible non-metallic hydrogen pipelines to solve the problems mentioned in the background art. Summary of the Invention

[0005] The purpose of this invention is to provide a connection device and method for flexible non-metallic hydrogen pipelines, which achieves automated pipeline cleaning, hot-melt welding, boundary cutting, and composite material winding, thereby improving the strength of the pipeline joint.

[0006] The objective of this invention can be achieved through the following technical solutions: A connection device and method for a flexible non-metallic hydrogen transport pipeline includes a support frame. A moving mechanism is provided on the top front side of the support frame. The moving mechanism includes a pair of movable pipe clamping devices arranged left and right, with the hydrogen transport pipeline clamped inside the pipe clamping devices. A cleaning mechanism is provided on the top of the support frame. The cleaning mechanism includes an annular shell. Annular guide rails are fixedly connected to the left and right sides of the interior of the annular shell. Rotatable annular gears are rotatably connected to the inner sides of the two annular guide rails. Annular soft brushes are fixedly connected to the left and right sides of the annular gears. The bottom of the two annular soft brushes has a notch with a flat cutting blade at the notch.

[0007] As a further embodiment of the present invention: the left and right sides of the annular shell are flared outwards, and a notch is provided at the top of the annular shell. A motor three is fixedly connected to the top right side of the annular shell, and a gear two is fixedly connected to the output end of the motor three. The lower half of the gear two is located inside the notch and the gear two meshes with the ring gear. The flat cutting blade includes a vertical cutting blade capable of cutting the pipe joint end face and a stepped zigzag cutting blade capable of cutting the side wall of the pipe joint end.

[0008] As a further embodiment of the present invention: The inner left and right sides of the annular shell are respectively fixedly connected to fixed rings. The interior of each fixed ring is hollow and has a ring-shaped liquid outlet pipe fixedly connected inside. A set of inclined nozzles arranged in a circular pattern are fixedly connected to the outer side of each fixed ring. The input end of each inclined nozzle is fixedly connected to the surface of the liquid outlet pipe. A pump body is fixedly connected to the top left side of the annular shell. The input end of the pump body is fixedly connected to a liquid storage bottle, which is installed inside the mounting shell at the top of the annular shell. A diverter pipe is fixedly connected to the output end of the pump body, and the diverter pipe is fixedly connected to two liquid outlet pipes respectively. A circular drain hole is opened at the bottom of the annular shell. A return bottle is threaded onto the bottom of the annular shell, and the top of the return bottle covers the drain hole.

[0009] As a further embodiment of the present invention: the moving mechanism includes a fixed box fixedly connected to the front top of the support frame, and a bidirectional threaded rod rotatably connected to the left and right sides of the fixed box. The outer side of the bidirectional threaded rod is threadedly connected to a moving block arranged on the left and right. The side of the moving block is adapted to the cross-section of the fixed box, and the top of the moving block is fixedly connected to a corresponding pipe clamping device. A motor is fixedly connected to the left side of the support frame, and the output end of the motor is fixedly connected to the bidirectional threaded rod.

[0010] As a further embodiment of the present invention: a switching mechanism is provided on the rear side of the support frame, the switching mechanism includes a rear box, and a lead screw is rotatably connected to the left and right sides inside the rear box. A moving table is threadedly connected to the outer side of the lead screw. A transverse guide rail is fixedly connected to the bottom of the rear box, and the transverse guide rail is slidably connected to the moving table. A second motor is fixedly connected to the left side of the rear box, and the output end of the second motor is fixedly connected to the lead screw. A lifting mechanism, a hot-melt mechanism, a turning mechanism, and a robotic arm winding device are arranged sequentially from left to right on the top of the rear box. A pair of vertically mirror-symmetrical path grooves are opened on the front of the rear box, and a symmetrical arc-shaped segment concave towards the center is provided in the middle of the path groove.

[0011] As a further embodiment of the present invention: the lifting mechanism includes a sliding groove formed on the right side of the top of the moving platform. A pair of slide rails arranged in a staggered manner are fixedly connected to the bottom inner side of the sliding groove. A movable sliding frame is slidably connected to the top of the two slide rails. A cross arm is provided above the two sliding frames. The cross arm is formed by the left and right parts being cross-hinged, and the left and right parts are hinged to the corresponding side sliding frames. A set of cross arms is sequentially hinged to the top of the cross arms. A top plate is provided above the top cross arm. A pair of slide rails is fixedly connected to the bottom of the top plate, but the two slide rails are arranged with the left side forward and the right side backward. A sliding frame is also slidably connected to the outer side of the two slide rails. The sliding frame is hinged to the corresponding part of the uppermost cross arm. The front side of the top plate is fixedly connected to the annular shell through a front connecting plate.

[0012] As a further embodiment of the present invention: a horizontal groove is provided on the right side of the front of the moving platform, and a pair of left-right oriented connecting rods are slidably connected inside the horizontal groove. The rear side of the pair of connecting rods is fixedly connected to the surface of the corresponding sliding frame. A pair of left-right mirror-symmetrical slide rails are fixedly connected to the right side of the front of the moving platform. A flat plate is slidably connected to the inner side of the two slide rails. A pair of left-right mirror-symmetrical inclined grooves are provided on the front of the flat plate. The pair of inclined grooves are in the shape of "\" and a connecting wheel is rotatably connected to the front of the pair of connecting rods through a rotating rod. The connecting wheel is rotatably connected to the corresponding inclined groove. A driving wheel is rotatably connected to the rear side of the flat plate through a rotating rod. The driving wheel is rotatably connected to the interior of the upper path groove.

[0013] As a further embodiment of the present invention: the hot-melt mechanism includes a fixed frame fixedly connected to the top of the moving platform; a connector is hinged to the front side of the fixed frame via a hinge; a hot-melt device is fixedly connected to the front side of the connector; a rolling groove penetrating the surface of the connector is provided on the left side of the connector; a moving frame is provided at the bottom of the rolling groove; a connecting rod is fixedly connected to the left and right sides of the inner side of the moving frame; the connecting rod is slidably connected to the rolling groove; an L-shaped block is fixedly connected to the bottom of the moving frame; the L-shaped block includes a vertically connected vertical block and a horizontal block; the rear side of the horizontal block is slidably connected to a path groove via a rotating wheel; a guide rod is fixedly connected to the rear side of the moving frame; a pair of vertical guide grooves are provided on the front side of the moving platform; the guide rod is slidably connected to the corresponding guide groove.

[0014] As a further embodiment of the present invention: the turning mechanism includes a fixed-point frame fixedly connected to the front side of the moving table, the fixed-point frame having an opening at its rear side, and guide rods fixedly connected to both the upper and lower sides of the fixed-point frame. Connecting block one and connecting block two are slidably connected to the upper and lower ends of the outer sides of the guide rods, respectively. The rear side of connecting block one is rotatably connected to the upper path groove via a rotating wheel, and the rear side of connecting block two is rotatably connected to the lower path groove via a rotating wheel. A mirror-symmetrical arc-shaped box is fixedly connected to the front sides of connecting block one and connecting block two, the inner side of the arc-shaped box... The side is fixedly connected with circumferentially arranged teeth. The inner left and right sides of the arc-shaped box are respectively fixedly connected with two annular guide rails. The inner sides of the two upper annular guide rails are slidably connected to a rotating frame. The bottom of the rotating frame is fixedly connected with a turning tool. A partition is set in the middle of the rotating frame, which divides the rotating frame into left and right parts. A motor is fixedly installed on the left side of the rotating frame. The output end of the motor passes through and is rotatably connected to the partition. A rolling gear is fixedly connected to the output end of the motor, and the rolling gear meshes with the upper teeth.

[0015] Another approach, a connection method for flexible non-metallic hydrogen pipelines, includes the following steps: S1. The cleaning mechanism cleans the pipe joint surface, and as the ring gear rotates, the vertical cutter cuts the pipe joint end face flat, while the zigzag cutter cuts the side wall of the pipe joint end into a stepped shape. S2. Then the heat fusion device heat-fuses the mating surfaces of the pipes. After heat fusion, the pipes are separated from the surface of the heat fusion device. Then the heat fusion device is removed and the two pipes are joined together by heat fusion. S3. Start the turning mechanism. The turning mechanism uses a rotating turning tool to cut the protruding part of the pipe joint surface. S4. Wrap the surface of the pipe joint with composite material, and then perform hot pressing on the wrapped composite material to complete the pipe connection.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. This connection device and method for flexible non-metallic hydrogen transport pipelines involves the following steps: When the docking side of the hydrogen transport pipeline just enters the annular shell, the moving mechanism stops, halting the movement of both pipelines. A pump draws cleaning fluid from the storage bottle, which is then sprayed onto the surface of the corresponding hydrogen transport pipeline through an inclined nozzle. The moving mechanism then moves the two pipelines towards each other again until the pipe docking surface contacts the surface of the annular soft brush. The output of motor three drives gear two to rotate, which in turn drives the annular gear to rotate. The annular gear then drives the two annular soft brushes to rotate, cleaning the docking surface of the hydrogen transport pipelines. This achieves the cleaning effect on the pipe docking surface and improves the strength of the pipe joint. When the vertical cutting blade contacts the docking end face, the zigzag cutting blade cuts into the pipeline at an angle. With the rotation of the annular gear, the vertical cutting blade flattens the pipe docking end face, while the zigzag cutting blade cuts the side wall of the pipe docking end into a stepped shape. 2. Furthermore, the connection equipment and method for flexible non-metallic hydrogen pipelines involves rotating the heat fusion device downwards to its maximum position, with the heating surfaces on both sides of the heat fusion device corresponding to the surfaces of the two pipelines. Then, a moving mechanism, through a pipeline clamping device, moves the two hydrogen pipelines towards each other until the mating surfaces of the two pipelines contact the heating surfaces of the heat fusion device. The heat fusion device is then activated to heat and melt the mating surfaces of the pipelines. After heating for a certain period, the moving mechanism moves the two pipelines away from each other. Next, the moving platform continues to move to the right, causing the rotating wheel behind the L-shaped block to roll along the right half of the arc section, thus moving the L-shaped block upwards while simultaneously moving it to the right, causing the connector and heat fusion device to rotate upwards to their original positions. Finally, the moving mechanism brings the heat-fused surfaces of the two pipelines together and presses them together, achieving automatic pipeline docking. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the switching mechanism structure in this invention; Figure 3 This is a schematic diagram of the hot-melt mechanism in this invention; Figure 4 This is a schematic diagram of the lifting mechanism structure in this invention; Figure 5 This is a partial structural diagram of the lifting mechanism in this invention; Figure 6 This is a schematic diagram of the cleaning mechanism structure in this invention; Figure 7 This is a schematic diagram of the cleaning mechanism in this invention from another perspective; Figure 8 This is a schematic cross-sectional view of the turning mechanism in this invention; Figure 9 This is a schematic cross-sectional view of the turning mechanism in this invention; Figure 10 for Figure 7 Enlarged schematic diagram of the structure at point A in the middle; Figure 11 This is a diagram showing the state of a pipe being cut by a flat cutter.

[0018] In the diagram: 10. Support frame; 20. Moving mechanism; 201. Fixed box; 202. Bidirectional threaded rod; 203. Moving block; 204. Pipe clamping device; 205. Motor 1; 30. Switching mechanism; 301. Rear box; 302. Motor 2; 303. Lead screw; 304. Moving table; 305. Path groove; 40. Hot melt mechanism; 401. Fixed frame; 402. Connector; 403. Hot melt machine; 404. Rolling groove; 405. Moving frame; 406. L-shaped block; 407. Guide rod; 408. Guide groove; 50. Lifting mechanism; 501. Sliding groove; 502. Slide rail 1; 503. Sliding frame; 504. Cross arm; 5041. Left side; 5042. Right side; 505. Top plate; 506. Horizontal groove; 507. Connecting rod; 508. Connecting wheel; 509. Plane Plate; 510, Inclined trough; 511, Drive wheel; 512, Slide rail two; 60, Cleaning mechanism; 601, Circular shell; 602, Circular guide rail one; 603, Circular gear; 604, Circular soft brush; 605, Motor three; 606, Gear two; 608, Fixing ring; 609, Inclined nozzle; 610, Storage bottle; 611, Pump body; 612, Discharge pipe; 613, Return bottle; 61 4. Flat cutting blade; 6141. Vertical cutting blade; 6142. Zigzag cutting blade; 70. Turning mechanism; 701. Fixed point frame; 702. Guide rod; 703. Connecting block one; 704. Connecting block two; 705. Arc-shaped box; 706. Gear; 707. Circular guide rail two; 708. Rotating frame; 709. Motor four; 710. Rolling gear; 711. Turning tool; 80. Robotic arm winding device. Detailed Implementation

[0019] like Figure 1 , Figure 6 , Figure 7 , Figure 10As shown, a connection device and method for a flexible non-metallic hydrogen pipeline includes a support frame 10. A moving mechanism 20 is provided on the top front side of the support frame 10. The moving mechanism 20 includes a pair of movable pipe clamping devices 204 arranged left and right. The pipe clamping devices 204 clamp the hydrogen pipeline inside. A cleaning mechanism 60 is provided on the top of the support frame 10. The cleaning mechanism 60 includes an annular shell 601. The left and right sides of the annular shell 601 are respectively fixedly connected to annular guide rails 602. The inner sides of the two annular guide rails 602 are rotatably connected to rotatable annular gears 603. The left and right sides of the annular gears 603 are respectively fixedly connected to annular soft brushes 604. The bottom of the two annular soft brushes has a notch, and a flat cutter 614 is provided at the notch.

[0020] Preferably, the flat cutter (614) includes a vertical cutter (6141) capable of cutting the pipe joint end face and a zigzag cutter (6142) capable of cutting the side wall of the pipe joint end. The hydrogen transport pipe has multiple layers, which are divided into inner and outer layers for ease of explanation below. In use, the outer layer at the pipe joint needs to be cut so that the inner layer of the pipe protrudes slightly to facilitate subsequent heat fusion welding, while the outer layer is directly wrapped and then hot-pressed.

[0021] Specifically, the left and right sides of the annular shell 601 are flared outwards, and a notch is provided at the top of the annular shell 601. A motor 605 is fixedly connected to the top right side of the annular shell 601. A gear 606 is fixedly connected to the output end of the motor 605. The lower half of the gear 606 is located inside the notch and meshes with the ring gear 603.

[0022] Furthermore, a fixing ring 608 is fixedly connected to the left and right sides of the inner side of the annular shell 601. The fixing ring 608 is hollow inside and has an annular outlet pipe 612 fixedly connected inside. A set of inclined nozzles 609 arranged in a circle is fixedly connected to the outer side of the fixing ring 608. The input end of the inclined nozzle 609 is fixedly connected to the surface of the outlet pipe 612. A pump body 611 is fixedly connected to the top left side of the annular shell 601. The input end of the pump body 611 is fixedly connected to a storage bottle 610. The storage bottle 610 is installed inside the mounting shell at the top of the annular shell 601. A diverter pipe is fixedly connected to the output end of the pump body 611. The diverter pipe is fixedly connected to two outlet pipes 612 respectively. A circular drain hole is opened at the bottom of the annular shell 601. A return bottle 613 is threadedly connected to the bottom of the annular shell 601. The top of the return bottle 613 covers the drain hole.

[0023] Before the two hydrogen pipelines are heat-fused together, the mating surfaces of the two pipelines need to be cleaned to prevent unevenness of the mating surfaces or dust and particles from getting stuck on the pipeline surface, which would affect the sealing performance of the two pipelines after heat fusion; therefore, a cleaning mechanism 60 is proposed.

[0024] Before use, the hydrogen delivery pipes are clamped and fixed by the pipe clamping devices 204 on both sides. The moving mechanism 20 drives the two pipe clamping devices 204 to move towards each other, so that the two hydrogen delivery pipes gradually approach the cleaning mechanism 60. When the docking side of the hydrogen delivery pipe has just entered the annular shell 601 a short distance, the moving mechanism 20 stops, so that the two hydrogen delivery pipes stop moving. The pump body 611 is started by external power supply. The pump body 611 draws the cleaning liquid from the storage bottle 610 at the input end, and then sends the cleaning liquid into the two outlet pipes 612 through the diverter pipe at the output end. Finally, the cleaning liquid is sprayed onto the surface of the corresponding hydrogen delivery pipe through a set of inclined nozzles 609. After the spraying time is measured, the moving mechanism 20 is started again, and the pipe clamping devices 204 drive the two hydrogen delivery pipes to move towards each other again until the docking surface of the corresponding delivery pipe contacts the surface of the corresponding annular soft brush 604. At the same time, the cleaning liquid dripping from the hydrogen delivery pipe The liquid enters the return bottle 613 through the drain hole, achieving the effect of waste liquid collection. During the movement, the zigzag cutter 6142 is inserted into the outer layer of the pipe at an angle, while the cutting edge of the vertical cutter 6141 contacts the inner surface of the pipe's mating end face. Then, the motor 605 is started by an external power supply. The output end of the motor 605 drives the gear 606 to rotate, which in turn drives the ring gear 603 to rotate. The ring gear 603 drives the two ring soft brushes 604 and the flat cutter 614 to rotate. The vertical cutter 6141 rotates along the pipe's mating end face, cutting the protruding part of the pipe's end face flat. The zigzag cutter 6142 rotates and cuts the outer layer of the pipe's mating end side wall, making the pipe's mating end face form a stepped shape. The inner protrusion of the pipe's mating end face facilitates subsequent heat fusion, while the outer layer of the pipe is not heat fused. The rotating ring soft brush 604 can clean the cut end face of the pipe to remove burrs.

[0025] refer to Figure 1 The moving mechanism 20 includes a fixed box 201 fixedly connected to the front top of the support frame 10. The left and right sides of the fixed box 201 are rotatably connected to a bidirectional threaded rod 202. The outer side of the bidirectional threaded rod 202 is threadedly connected to a moving block 203 arranged on the left and right. The side of the moving block 203 is adapted to the cross section of the fixed box 201. The top of the moving block 203 is fixedly connected to a corresponding pipe clamping device 204. A motor 205 is fixedly connected to the left side of the support frame 10. The output end of the motor 205 is fixedly connected to the bidirectional threaded rod 202.

[0026] When in use, the motor 205 is started by an external power supply. The output end of the motor 205 rotates, which drives the bidirectional threaded rod 202 to rotate, thereby driving the two moving blocks 203 and the pipe clamping device 204 to move towards or away from each other, and thus driving the two hydrogen transport pipes to move towards or away from each other.

[0027] refer to Figure 1 , Figure 2 A switching mechanism 30 is provided on the rear side of the support frame 10. The switching mechanism 30 includes a rear box 301. A lead screw 303 is rotatably connected to the left and right sides inside the rear box 301. A moving table 304 is threadedly connected to the outer side of the lead screw 303. A transverse guide rail is fixedly connected to the bottom of the rear box 301. The transverse guide rail is slidably connected to the moving table 304. A second motor 302 is fixedly connected to the left side of the rear box 301. The output end of the second motor 302 is fixedly connected to the lead screw 303. A lifting mechanism 50, a hot-melt mechanism 40, a turning mechanism 70, and a robotic arm winding device 80 are arranged sequentially from left to right on the top of the rear box 301.

[0028] Preferably, the front of the rear box 301 is provided with a pair of vertically mirror-symmetrical path grooves 305, and the middle position of the path groove 305 is provided with a symmetrical arc-shaped segment that is recessed towards the center.

[0029] After the two hydrogen pipeline mating surfaces are cleaned, they need to undergo a series of processes including heat fusion, mating, machining, and wrapping. During these processes, the mating surfaces of the two hydrogen pipelines are aligned with the vertical center line of the front of the rear storage box 301. To ensure that these processes are performed sequentially, an external power source is used to start motor 302. The output of motor 302 drives the lead screw 303 to rotate, thereby causing the moving table 304 to move intermittently from left to right. This allows the aforementioned mechanisms to align with the center line of the rear storage box 301, making the processing steps smoother.

[0030] refer to Figure 1 , Figures 3-5The lifting mechanism 50 includes a sliding groove 501 formed on the top right side of the movable platform 304. A pair of slide rails 502 arranged in a staggered manner are fixedly connected to the bottom inner side of the sliding groove 501. Movable sliding frames 503 are slidably connected to the top of the two slide rails 502. A cross arm 504 is provided above the two sliding frames 503. The cross arm 504 is formed by a left part 5041 and a right part 5042 that are cross-hinged together, and the left part 5041 and the right part 5042 are hinged to the corresponding side sliding frames 503. A set of cross arms 504 are sequentially hinged to the top of the cross arm 504. A top plate 505 is provided on the top of the uppermost cross arm 504. A pair of slide rails 502 are fixedly connected to the bottom of the top plate 505. However, the two slide rails 502 are arranged with the left side forward and the right side backward. Sliding frames 503 are also slidably connected to the outside of the two slide rails 502. The sliding frames 503 are hinged to the corresponding part of the uppermost cross arm 504. The front side of the top plate 505 is fixedly connected to the annular shell 601 through a front connecting plate.

[0031] Specifically, a horizontal groove 506 is provided on the right side of the front of the moving platform 304. A pair of left-right oriented connecting rods 507 are slidably connected inside the horizontal groove 506. The rear side of the pair of connecting rods 507 is fixedly connected to the surface of the corresponding sliding frame 503. A pair of left-right mirror-symmetrical slide rails 512 are fixedly connected to the right side of the front of the moving platform 304. A flat plate 509 is slidably connected to the inner side of the two slide rails 512. A pair of left-right mirror-symmetrical inclined grooves 510 are provided on the front of the flat plate 509. A connecting wheel 508 is rotatably connected to the front of the pair of connecting rods 507 through a rotating rod. The connecting wheel 508 is rotatably connected to the corresponding inclined groove 510. A driving wheel 511 is rotatably connected to the rear side of the flat plate 509 through a rotating rod. The driving wheel 511 is rotatably connected to the interior of the upper path groove 305.

[0032] Preferably, the pair of inclined slots 510 are in the shape of "\" .

[0033] Initially, the moving platform 304 is located inside the rear box 301 on the left side. When the switching mechanism 30 is activated, it drives the moving platform 304 to move to the right. The driving wheel 511 rolls along the inside of the upper path groove 305. When the lifting mechanism 50 moves to the arc section of the path groove 305, the flat plate 509 slides down with the driving wheel 511, so that the outer position of the inclined groove 510 corresponds to the connecting wheel 508. The two connecting wheels 508 move away from each other while rolling, and then drive the two sliding frames 503 to move away from each other through the connecting rod 507. This causes the bottom angle of a set of cross arms 503 to become larger and larger, resulting in a decrease in the height of the cross arms 503. The decrease in the height of the set of cross arms 503 causes the top plate 505 and the cleaning mechanism 60 to decrease in height until the driving wheel 511 rolls to the center of the arc section, at which point the cleaning mechanism 60 corresponds to the position of the two pipes. Similarly, as the moving platform 304 continues to move, causing the driving wheel 511 to roll along the right half of the arc segment, it drives the flat plate 509 to move to the right while simultaneously moving upward along the slide rail 512. This causes the inward position of the inclined groove 510 to align with the connecting wheel 508, thereby causing the two sliding frames 503 to move towards each other. This makes the included angle at the bottom of the cross arm 503 smaller and smaller, thus gradually increasing the height of the cross arm 503. This, in turn, drives the top plate 505 and the cleaning mechanism 60 to move upward. When the driving wheel 511 moves along the horizontal section of the path groove 305, the top plate 505 and the cleaning mechanism 60 are at their highest and fixed height, thus achieving the positioning of the cleaning mechanism 60 after it has risen. The higher position of the cleaning mechanism 60 after rising ensures that it does not obstruct the operation of other devices when it is not in use.

[0034] refer to Figure 2 , Figure 3 The hot-melting mechanism 40 includes a fixed frame 401 fixedly connected to the top of the moving platform 304. A connector 402 is hinged to the front side of the fixed frame 401 via a hinge. A hot-melting device 403 is fixedly connected to the front side of the connector 402. A rolling groove 404 penetrating the surface of the connector 402 is provided on the left side of the connector 402. A moving frame 405 is provided at the bottom of the rolling groove 404. A connecting rod is fixedly connected to the left and right sides of the inner side of the moving frame 405. The connecting rod is slidably connected to the rolling groove 404. An L-shaped block 406 is fixedly connected to the bottom of the moving frame 405. The L-shaped block 406 includes a vertically connected vertical block and a horizontal block. The rear side of the horizontal block is slidably connected to the path groove 305 via a rotating wheel.

[0035] Preferably, a guide rod 407 is fixedly connected to the rear side of the movable frame 405, and a pair of vertical guide grooves 408 are provided on the front side of the movable stage 304. The guide rod 407 is slidably connected to the corresponding guide groove 408. This achieves the effect of guiding the movable frame 405 and the L-shaped block 406 when they move.

[0036] Initially, the roller behind the L-shaped block 406 rolls along the horizontal section of the path groove 305, keeping the heat fusion device 403 tilted upwards and not in contact with the pipe. After cleaning and cutting, the moving table 304 moves to the right again until the heat fusion device 403 is directly opposite the centerline of the rear box 301. During this process, the roller behind the L-shaped block 406 rolls along the left half of the arc section, causing the L-shaped block 406 to slide downwards while moving to the right, thereby causing the connector 402 and the heat fusion device 403 to flip downwards. When the L-shaped block 406 is at the lowest point of the arc section, the heat fusion device 403 flips downwards to its maximum position, and at this time, the heating surfaces on both sides of the heat fusion device 403 correspond to the surfaces of the pipes on both sides. The moving mechanism 20 drives the two hydrogen pipelines on both sides to move towards each other through the pipeline clamping device 204 until the inner surface of the joint of the two pipelines contacts the heating surface of the heat melter 403. Then the heat melter 403 is activated to heat and melt the joint surface of the pipelines. After heating for a certain period of time, the moving mechanism 20 moves the two pipelines away from each other. Then the moving table 304 continues to move to the right, so that the roller behind the L-shaped block 406 rolls along the right half of the arc section, so that the L-shaped block 406 moves to the right and upward at the same time, driving the connector 402 and the heat melter 403 to flip upward to their original positions. Finally, the moving mechanism 20 makes the heat melt surfaces of the two pipelines join together and squeeze them until the two hydrogen pipelines cool and form.

[0037] refer to Figure 1 , Figure 8 , Figure 9 The turning mechanism 70 includes a fixed-point frame 701 fixedly connected to the front side of the moving table 304. The fixed-point frame 701 has an opening at its rear. Guide rods 702 are fixedly connected to both the upper and lower sides of the fixed-point frame 701. Connecting block 1 703 and connecting block 2 704 are slidably connected to the upper and lower ends of the outer sides of the guide rods 702, respectively. The rear side of connecting block 1 703 is rotatably connected to the upper path groove 305 via a rotating wheel. The rear side of connecting block 2 704 is rotatably connected to the lower path groove 305 via a rotating wheel. A mirror-symmetrical arc-shaped box 705 is fixedly connected to the front side of connecting block 1 703 and connecting block 2 704. The inner side of the arc-shaped box 705 is fixedly connected to... The arc-shaped box 705 has teeth 706 arranged in a circle. The left and right sides of the arc-shaped box 705 are respectively fixedly connected to the second ring guide rail 707. The inner sides of the two second ring guide rails 707 are slidably connected to the rotating frame 708. The bottom of the rotating frame 708 is fixedly connected to the turning tool 711. A partition is provided in the middle of the rotating frame 708, which divides the rotating frame 708 into left and right parts. A fourth motor 709 is fixedly installed on the left side of the rotating frame 708. The output end of the fourth motor 709 passes through and is rotatably connected to the partition. A rolling gear 710 is fixedly connected to the output end of the fourth motor 709. The rolling gear 710 meshes with the teeth 706 above.

[0038] After the two pipes have cooled down from the heat fusion process, a raised, gel-like substance will appear on the surface of the pipe joint. At this point, the moving table 304 is moved to the right again until the turning mechanism 70 reaches the center line of the rear box 301. During this movement, the rollers on the rear sides of connecting block 1 703 and connecting block 2 704 roll along the interior of the two path grooves 305. When the rollers roll along the arc-shaped section of the path groove 305, they drive connecting block 1 703 downwards and connecting block 2 704 upwards, causing the two arc-shaped boxes 705 to move towards each other during the movement of the turning mechanism 70. The moving table 304 stops when connecting block 1 703 and connecting block 2 704 reach the middle of the arc-shaped section. The corresponding surfaces of the two arc-shaped boxes 705 are tightly fitted together, and the turning tool 711 rests against the surface of the pipe joint. Then, the motor 4 709 is started, and its output drives the rolling gear 710 to rotate, thus causing the rolling gear 710 to move along the... The inner teeth 706 of the ring formed by the two arc-shaped boxes 705 roll, thereby driving the rotating frame 708 to make a circular motion, which drives the turning tool 711 to cut the protruding part of the pipe joint surface. After the turning tool 711 rotates once with the rotating frame 708, the output end of the motor 709 reverses, driving the rotating frame 708 to rotate one revolution in the opposite direction and return to its original position, thus completely cutting the pipe joint. Subsequently, the moving table 304 moves to the right again, causing the wheels on the rear side of the connecting block 1 703 and connecting block 2 704 to roll with the right half of the corresponding arc segment, thereby causing the connecting block 1 703 and connecting block 2 704 to move away from each other and separate. The moving table 304 moves in this way until the winding end of the robotic arm winding device 80 corresponds to the pipe joint, and then the robotic arm winding device 80 winds the pipe joint to wrap the pipe joint with composite material. Finally, the pipe is removed and the composite material at the joint is hot-pressed by the hot-pressing device.

[0039] A connection method for flexible non-metallic hydrogen pipelines includes two connection stages. In the first stage, the surfaces of the two pipeline joints are heat-fused together by a heat-fusion mechanism 40. In the second stage, the pipeline joints are wrapped with composite material and hot-pressed by a robotic arm winding device 80.

[0040] The first connection phase includes the following steps: 1) Initially, the cleaning mechanism 60 cleans the pipe mating surfaces, and the flat cutter 614, which rotates with the ring gear 603, cuts the pipe mating surfaces flat and cuts the outer layer of the pipe into a stepped shape. Then, the heat fusion device 403 heat-fuses the mating surfaces of the pipes. After heat fusion, the pipes are separated from the surface of the heat fusion device 403. Then, the heat fusion device 403 is removed to join the two pipes together. 2) Start the turning mechanism 70. The turning mechanism 70 uses a rotating turning tool to cut the protruding part of the pipe joint surface.

[0041] The second connection phase includes the following steps: 1) Start the robotic arm winding device 80, and wrap the surface of the pipe joint with composite material at the winding end of the robotic arm winding device 80. 2) Finally, the pipe joints are heat-pressed using a hot-pressing device to complete the pipe connection.

[0042] The robotic arm winding device (80) and the hot pressing device are used to perform the composite material wrapping and curing process at the pipe joint, which is a device used in existing pipe joints.

Claims

1. A connection device for a flexible non-metallic hydrogen pipeline, comprising a support frame (10), wherein a moving mechanism (20) is provided on the top front side of the support frame (10), characterized in that, The moving mechanism (20) includes a pair of movable pipe clamping devices (204) arranged on the left and right, wherein the pipe clamping devices (204) clamp the hydrogen transport pipe on their inner sides; The top of the support frame (10) is provided with a cleaning mechanism (60). The cleaning mechanism (60) includes a circular shell (601). The left and right sides of the inner side of the circular shell (601) are respectively fixedly connected to a ring-shaped guide rail (602). The inner sides of the two ring-shaped guide rails (602) are rotatably connected to a rotatable ring gear (603). The left and right sides of the ring gear (603) are respectively fixedly connected to a ring-shaped soft brush (604). The bottom of the two ring-shaped soft brushes has a notch, and a flat cutter (614) is provided at the notch.

2. The connection device for a flexible non-metallic hydrogen pipeline according to claim 1, characterized in that, The left and right sides of the annular shell (601) are flared outwards, and the top of the annular shell (601) has a notch. A motor three (605) is fixedly connected to the top right side of the annular shell (601). A gear two (606) is fixedly connected to the output end of the motor three (605). The lower half of the gear two (606) is located inside the notch and the gear two (606) meshes with the ring gear (603). The flat cutter (614) includes a vertical cutter (6141) capable of cutting the pipe joint end face and a zigzag cutter (6142) capable of cutting the side wall of the pipe joint end.

3. A connection device for a flexible non-metallic hydrogen pipeline according to claim 2, characterized in that, The inner left and right sides of the annular shell (601) are respectively fixedly connected to a fixing ring (608). The fixing ring (608) is hollow inside and has an annular liquid outlet pipe (612) fixedly connected inside. A set of inclined nozzles (609) arranged in a circle are fixedly connected to the outer side of the fixing ring (608). The input end of the inclined nozzle (609) is fixedly connected to the surface of the liquid outlet pipe (612). A pump body (611) is fixedly connected to the top left side of the annular shell (601). The input end of the pump body (611) is fixedly connected to a storage bottle (610). The storage bottle (610) is installed inside the mounting shell at the top of the annular shell (601). A diverter pipe is fixedly connected to the output end of the pump body (611). The diverter pipe is fixedly connected to two outlet pipes (612) respectively. A circular drain hole is opened at the bottom of the annular shell (601). A return bottle (613) is threaded to the bottom of the annular shell (601). The top of the return bottle (613) covers the drain hole.

4. The connection device and method for flexible non-metallic hydrogen pipelines according to claim 1, characterized in that, The moving mechanism (20) includes a fixed box (201) fixedly connected to the front side of the top of the support frame (10), and the left and right sides of the fixed box (201) are rotatably connected to a bidirectional threaded rod (202). The outer side of the bidirectional threaded rod (202) is threaded with movable blocks (203) arranged on the left and right. The side of the movable block (203) is adapted to the cross section of the fixed box (201). The top of the movable block (203) is fixedly connected to the corresponding pipe clamping device (204). A motor (205) is fixedly connected to the left side of the support frame (10), and the output end of the motor (205) is fixedly connected to the bidirectional threaded rod (202).

5. A connection device for a flexible non-metallic hydrogen pipeline according to claim 1, characterized in that, A switching mechanism (30) is provided on the rear side of the support frame (10). The switching mechanism (30) includes a rear box (301). The left and right sides of the rear box (301) are rotatably connected to a lead screw (303). A moving table (304) is threadedly connected to the outer side of the lead screw (303). The bottom of the rear box (301) is fixedly connected to a transverse guide rail, which is slidably connected to the moving platform (304). The left side of the rear box (301) is fixedly connected to a second motor (302), and the output end of the second motor (302) is fixedly connected to a lead screw (303); The top of the rear box (301) is provided with a lifting mechanism (50), a hot melt mechanism (40), and a turning mechanism (70) from left to right. The front of the rear box (301) is provided with a pair of vertically mirror-symmetrical path grooves (305), and a symmetrical arc-shaped segment that is recessed towards the center is provided in the middle of the path grooves (305).

6. A connection device for a flexible non-metallic hydrogen pipeline according to claim 5, characterized in that, The lifting mechanism (50) includes a sliding groove (501) on the top right side of the movable platform (304). A pair of slide rails (502) arranged in a staggered manner are fixedly connected to the bottom inner side of the sliding groove (501). Movable sliding frames (503) are slidably connected to the top of the two slide rails (502). A cross arm (504) is provided above the two sliding frames (503). The cross arm (504) is formed by the cross hinge of the left part (5041) and the right part (5042), and the left part (5041) and the right part (5042) are connected to the corresponding side sliding frames (503). Hinged; a set of cross arms (504) are sequentially hinged to the top of the cross arm (504), and a top plate (505) is provided above the top cross arm (504). The bottom of the top plate (505) is fixedly connected to the same pair of slide rails (502), but the two slide rails (502) are arranged with the left side forward and the right side backward. The outer sides of the two slide rails (502) are also slidably connected to sliding frames (503). The sliding frames (503) are hinged to the corresponding part of the uppermost cross arm (504). The front side of the top plate (505) is fixedly connected to the annular shell (601) through the front connecting plate.

7. A connection device for a flexible non-metallic hydrogen pipeline according to claim 6, characterized in that, A transverse groove (506) is provided on the right side of the front of the moving platform (304). A pair of connecting rods (507) arranged on the left and right sides are slidably connected inside the transverse groove (506). The rear side of the pair of connecting rods (507) is fixedly connected to the surface of the corresponding sliding frame (503). A pair of left and right mirror-symmetrical slide rails (512) are fixedly connected to the right side of the front of the moving platform (304). A flat plate (509) is slidably connected to the inner side of the two slide rails (512). 9) has a pair of left and right mirror symmetrical inclined grooves (510) on the front side. The pair of inclined grooves (510) are in the shape of "\ / ". The front of the pair of connecting rods (507) is rotatably connected to a connecting wheel (508) through a rotating rod. The connecting wheel (508) is rotatably connected to the corresponding inclined groove (510). The rear side of the flat plate (509) is rotatably connected to a driving wheel (511) through a rotating rod. The driving wheel (511) is rotatably connected to the inside of the upper path groove (305).

8. A connection device for a flexible non-metallic hydrogen pipeline according to claim 5, characterized in that, The hot melt mechanism (40) includes a fixed frame (401) fixedly connected to the top of the moving platform (304), and a connector (402) is hinged to the front side of the fixed frame (401) via a hinge, and a hot melter (403) is fixedly connected to the front side of the connector (402). The left side of the connector (402) is provided with a rolling groove (404) that penetrates the surface of the connector (402); a movable frame (405) is provided at the bottom of the rolling groove (404), and a connecting rod is fixedly connected to the left and right sides of the inner side of the movable frame (405), and the connecting rod is slidably connected to the rolling groove (404). The bottom of the movable frame (405) is fixedly connected to an L-shaped block (406), the L-shaped block (406) includes a vertically connected vertical block and a horizontal block, and the rear side of the horizontal block is rotatably connected to the path groove (305) through a rotating wheel; A guide rod (407) is fixedly connected to the rear side of the movable frame (405), and a pair of vertical guide grooves (408) are provided on the front side of the movable platform (304). The guide rod (407) is slidably connected to the corresponding guide groove (408).

9. A connection device for a flexible non-metallic hydrogen pipeline according to claim 8, characterized in that, The turning mechanism (70) includes a fixed frame (701) fixedly connected to the front side of the moving table (304). The fixed frame (701) has an opening at the rear side. The upper and lower sides of the fixed frame (701) are fixedly connected to a guide rod (702). The upper and lower ends of the guide rod (702) are slidably connected to a first connecting block (703) and a second connecting block (704). The rear side of the first connecting block (703) is slidably connected to the upper path groove (305) through a rotating wheel. The rear side of the second connecting block (704) is slidably connected to the lower path groove (305) through a rotating wheel. A mirror-symmetrical arc-shaped box (705) is fixedly connected to the front side of connecting block one (703) and connecting block two (704), and a circumferentially arranged tooth (706) is fixedly connected to the inner side of the arc-shaped box (705). The arc-shaped box (705) has two ring-shaped guide rails (707) fixedly connected to the left and right sides of its interior respectively. The two ring-shaped guide rails (707) at the top are slidably connected to a rotating frame (708). A turning tool (711) is fixedly connected to the bottom of the rotating frame (708). A partition is provided in the middle of the rotating frame (708), which divides the rotating frame (708) into left and right parts. A motor four (709) is fixedly installed on the left side of the rotating frame (708). The output end of the motor four (709) passes through and is rotatably connected to the partition. A rolling gear (710) is fixedly connected to the output end of the motor four (709), and the rolling gear (710) meshes with the upper teeth (706).

10. A connection method for a flexible non-metallic hydrogen transport pipeline, applied to the connection equipment for a flexible non-metallic hydrogen transport pipeline as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. The cleaning mechanism (60) cleans the pipe joint surface, and as the ring gear (603) rotates, the vertical cutter (6141) cuts the pipe joint end face flat, while the zigzag cutter (6142) cuts the side wall of the pipe joint end into a stepped shape. S2. Then the heat fusion device (403) heat fused the mating surfaces of the pipes. After the heat fusion, the pipes were separated from the surface of the heat fusion device (403). Then the heat fusion device (403) was removed and the two pipes were joined together by heat fusion. S3. Start the turning mechanism (70). The turning mechanism (70) cuts the protruding part of the pipe joint surface by rotating the turning tool. S4. Wrap the surface of the pipe joint with composite material, and then perform hot pressing on the wrapped composite material to complete the pipe connection.

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