A coiled tubing butt joining device

Abstract

The application belongs to the technical field of oil and gas pipe butt joint, and discloses a continuous pipe butt joint device, which comprises a first conveying assembly, a first clamping assembly, a second conveying assembly, a second clamping assembly, a butt joint assembly and a driving assembly. The first clamping assembly is arranged on the first conveying assembly, the second clamping assembly is arranged on the second conveying assembly, and the butt joint assembly is arranged between the first conveying assembly and the second conveying assembly. A first continuous pipe on the first clamping assembly is close to the butt joint assembly until the first continuous pipe is sleeved on one end of the butt joint assembly. A second continuous pipe on the second clamping assembly is close to the butt joint assembly until the second continuous pipe is sleeved on the other end of the butt joint assembly. The driving assembly is arranged above the butt joint assembly and is in transmission connection with the butt joint assembly. The driving assembly drives the butt joint assembly to rotate and generates heat by friction with the inner walls of the two continuous pipes. The two continuous pipes are welded by high temperature generated by friction. The device reduces manual intervention in the transportation and welding process of the continuous pipes, and improves work safety.

Description

Technical Field

[0001] This invention belongs to the field of oil and gas equipment docking technology, and specifically relates to a continuous pipe docking device. Background Technology

[0002] In oil and gas extraction, coiled tubing made of low-carbon alloy steel is commonly used due to its excellent flexibility; it is also known as flexible tubing. Coiled tubing can replace conventional tubing for various operations and is frequently used in the oil and gas extraction field. However, as oil and gas wells in my country become deeper and the horizontal sections become longer, existing coiled tubing cannot meet the demands of field operations. In some cases, the drill string may even become locked, making it difficult to advance further to the target working depth. To improve tubing rigidity and enhance drilling pressure transmission during downhole operations, large-diameter coiled tubing is often used to address these critical issues. However, current road transport regulations restrict the transport of coiled tubing exceeding specified lengths. In practice, it is often necessary to join two relatively short coiled tubing rolls (e.g., two 4000m rolls) to increase the working length.

[0003] There are two main methods for pipe-to-pipe connection in oilfields: field butt welding and spiral wound connector connection. Field butt welding technology has been used in oilfields, but the operation requires hot work and the welding equipment is relatively large. This makes the connection method time-consuming, poses safety hazards, and is difficult to adapt to the bending deformation of continuous pipes. Therefore, this technology has not been widely promoted and applied. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a continuous tube docking device, comprising: a first conveying component, a first clamping component, a second conveying component, a second clamping component, a docking component, and a driving component. The first clamping component is disposed on the first conveying component, the second clamping component is disposed on the second conveying component, and the docking component is disposed between the first conveying component and the second conveying component. A first continuous tube clamped on the first clamping component moves towards the docking component until it is sleeved on one end of the docking component. A second continuous tube clamped on the second clamping component moves towards the docking component until it is sleeved on the other end of the docking component. The driving component is vertically positioned above the docking component and is connected to the docking component for transmission, thereby driving the docking component to rotate and generate heat through friction with the inner walls of the first continuous tube and the second continuous tube, respectively.

[0005] Optionally, the docking assembly includes a docking tube, a rotating cylinder, and a connecting rod. The driving assembly and the rotating cylinder are connected in a driving connection. The rotating cylinder is sleeved on the docking tube. The connecting rod passes through the rotating cylinder and is connected to the docking tube. The first continuous tube and the second continuous tube are respectively sleeved on both ends of the docking tube.

[0006] Optionally, the docking assembly further includes two fixing rings, multiple pre-tightening parts, two annular plates, and multiple friction plates. The two fixing rings are respectively spaced and sleeved on the docking tube. The multiple pre-tightening parts are located between the two fixing rings. The two ends of the multiple pre-tightening parts pass through the two fixing rings along the axial direction of the docking tube and are connected to the friction plates. The friction plates are in contact with the inner walls of the first continuous tube and the second continuous tube. The pre-tightening parts are spaced apart by a preset distance. The two annular plates are spaced and sleeved on the pre-tightening parts. The connecting rod passes through the rotating cylinder and is threadedly connected to the pre-tightening parts.

[0007] Optionally, the docking assembly further includes multiple floating parts, multiple jaws, multiple telescopic cylinders, and multiple pairs of pistons. The multiple jaws are circumferentially spaced along the two fixed rings. The multiple telescopic cylinders are circumferentially spaced along the rotating cylinder and pass through the rotating cylinder to align with the floating parts. The pre-tightening part is adjacent to the floating part, and the two ends of the floating part are respectively hinged to each pair of pistons. Each pair of pistons extends into the through holes at both ends of the fixed ring and contacts the end of the jaw in the radial direction of the through hole. An elastic element is provided in the diameter direction of the through hole to connect with the jaw.

[0008] Optionally, the pre-tightening part includes a connecting seat, a first limiting plate, and a second limiting plate. The first limiting plate and the second limiting plate pass through the two fixing rings and are connected to the friction plate, respectively. The two ends of the connecting seat are respectively snapped onto the first limiting plate and the second limiting plate. The two annular plates are sleeved on the two ends of the connecting seat, and the connecting rod passes through the rotating cylinder and is connected to the connecting seat.

[0009] Optionally, the pre-tightening part further includes two elastic pre-tightening members and two limiting shafts. The two elastic pre-tightening members pass through the two fixing rings and are respectively connected to the first limiting plate and the second limiting plate, and the two limiting shafts pass through the first limiting plate and the second limiting plate at the connection with the friction plate.

[0010] Optionally, the floating part includes a floating rod, two one-way locking rods, two locking springs, and a base. One end of each of the two one-way locking rods is located on both sides of the base, and the other ends of the two one-way locking rods are spaced apart so that the floating rod is within the interval. The two ends of the two locking springs are respectively located on both sides of the base and connected to the top ends of the two one-way locking rods. The floating rod is located above the base, and the two ends of the floating rod are respectively hinged to the two piston components. The telescopic cylinder is aligned with the floating rod.

[0011] Optionally, the docking assembly further includes two guide rings, which are respectively sleeved on both ends of the docking tube. Multiple guide wheels are provided on the guide rings, and the friction plate is located between the guide rings and the fixing ring.

[0012] Optionally, it also includes a support frame, wherein the first conveying component and the second conveying component are disposed on the inner wall of the support frame, and the driving component and the docking component are located at the center of the support frame.

[0013] Optionally, the first conveying component includes a first sliding portion and a second sliding portion, the first sliding portion and the second sliding portion being slidably disposed on the upper and lower support surfaces of the support frame, and the first clamping component being located between the first sliding portion and the second sliding portion and being connected to the first sliding portion and the second sliding portion respectively.

[0014] Optionally, the first sliding part includes a first slide rail, a first slider, a second slider, and a first connecting plate. The first slide rail is disposed on the inner support surface of the support frame. The first slider and the second slider are installed on the first slide rail at a preset distance. The first slider is connected to the slider in the second sliding part through the first connecting rod and the second connecting rod, which are parallel to each other. The first clamping part on the first clamping assembly is disposed on the first connecting rod and the second connecting rod. One end of the first connecting plate is perpendicularly connected to the second slider, and the other end is connected to one side of the first clamping assembly with the second clamping part. The other side of the second clamping part is connected to another slider on the second sliding part.

[0015] Optionally, the first sliding part further includes a first moving shaft and a second moving shaft, the first moving shaft being threadedly connected to the first slider, and the second moving shaft passing through the first moving shaft and the second slider being threadedly connected.

[0016] Optionally, the first clamping assembly includes a first clamping part and a second clamping part. The two ends of the first clamping part and the second clamping part are respectively connected to the first sliding part and the second sliding part in the first conveying assembly, and the first clamping part and the second clamping part are both located between the first sliding part and the second sliding part, and the first clamping part and the second clamping part are spaced apart.

[0017] Optionally, the first clamping part includes a first drive motor, a first fixed frame, a first rotary motor, a first guide wheel, a second drive motor, a second rotary motor, and a second guide wheel. One end of the first drive motor is disposed on the first slider. The two sides of the first fixed frame are disposed on the first connecting rod and the second connecting rod. The shaft of the first drive motor passes through the top surface of the first fixed frame and is connected to the first connecting frame of the first guide wheel. The two sides of the first connecting frame are slidably disposed on the first fixed frame. The first guide wheel is rotatably disposed on the first connecting frame. The first rotary motor is disposed on the outside of the first fixed frame and is connected to the first guide wheel in a transmission manner.

[0018] The shaft of the second drive motor passes through the bottom end face of the first fixed frame and is connected to the second connecting frame of the second guide wheel. The two sides of the second connecting frame are slidably disposed on the first fixed frame. The second guide wheel is rotatably disposed on the second connecting frame. The second rotary motor is disposed on the outside of the first fixed frame and is connected to the second guide wheel for transmission. A first continuous tube is sandwiched between the first guide wheel and the second guide wheel.

[0019] Optionally, the second clamping part includes a clamping frame, a third guide wheel, and a fourth guide wheel. The two sides of the clamping frame are respectively connected to the slider in the first sliding part and the slider in the second sliding part. The third guide wheel and the fourth guide wheel are disposed inside the clamping frame and are respectively connected to two motors on the outer wall of the clamping frame.

[0020] Optionally, the drive assembly includes a connecting block and a motor. The two ends of the connecting block are slidably mounted on two parallel sliding rods within the support frame. The motor is mounted on the connecting block, and the motor and the docking assembly are connected by a conveyor belt.

[0021] Optionally, the assembly also includes a nozzle shaping component located below the docking component. The nozzle shaping component includes a shaping frame, a first shaping rod, a second shaping rod, a first elastic element, a second elastic element, a drive motor, a guide shaft, and a lifting slider. Two connecting ends of the shaping frame are slidably mounted on the sliding rod. The two ends of the guide shaft are connected to the two side walls of the shaping frame and are parallel to one side of the shaping frame. The first shaping block and the second shaping block are sleeved on the guide shaft. The first elastic element is located between the first shaping block and the inner wall of the shaping frame, and the second elastic element is located between the second shaping block and the inner wall of the shaping frame. The first shaping rod passes through one side of the shaping frame and connects to the first shaping block, and the second shaping rod passes through the other side of the shaping frame and connects to the second shaping block. The shaft of the drive motor passes through the bottom side of the shaping frame and connects to the lifting slider within the shaping frame. The two ends of the lifting slider are located between the inclined surfaces of the first shaping block and the second shaping block.

[0022] Optionally, it also includes a lifting frame, which is connected to the bottom of the support frame.

[0023] The continuous tube welding device of the present invention transports and clamps a first continuous tube to one end of a welding assembly using a first conveying component and a first clamping component, and transports and clamps a second continuous tube to the other end of the welding assembly using a second conveying component and a second clamping component. A driving component then drives the welding assembly to rotate, generating heat through friction against the inner walls of the first and second continuous tubes. This frictional heat generates high temperatures, thereby achieving welding between the ends of the first and second continuous tubes. The device of the present invention has a high degree of integration and automation, reducing manual intervention in the transportation and welding of the continuous tubes, further improving work safety and increasing work efficiency. Furthermore, the structure of this device is simpler and its size is relatively smaller compared to traditional devices.

[0024] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0025] 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1A three-dimensional schematic diagram of a continuous pipe docking device according to an embodiment of the present invention is shown;

[0027] Figure 2 A schematic diagram of the docking assembly of the continuous pipe docking device in an embodiment of the present invention is shown;

[0028] Figure 3 A schematic diagram of the pre-tightening part and the floating part of the continuous pipe docking device in an embodiment of the present invention is shown;

[0029] Figure 4 A schematic diagram of the pre-tightening section of the continuous pipe docking device in an embodiment of the present invention is shown;

[0030] Figure 5 A schematic diagram of the floating part of the continuous pipe docking device in an embodiment of the present invention is shown;

[0031] Figure 6 A cross-sectional schematic diagram of the continuous pipe docking device in an embodiment of the present invention is shown;

[0032] Figure 7 A schematic diagram of the first clamping assembly and the first transport assembly of the continuous tube docking device in an embodiment of the present invention is shown;

[0033] Figure 8 A schematic diagram of a continuous pipe docking device according to an embodiment of the present invention is shown;

[0034] Figure 9 A schematic diagram of the pipe end shaping component of the continuous pipe docking device in an embodiment of the present invention is shown.

[0035] In the figure, 1. First conveying assembly; 2. First clamping assembly; 3. Second conveying assembly; 4. Second clamping assembly; 5. Docking assembly; 6. Drive assembly; 10. First continuous tube; 20. Second continuous tube; 51. Docking tube; 52. Rotating cylinder; 53. Connecting rod; 54. Fixed ring; 55. Pre-tightening part; 56. Annular plate; 57. Friction plate; 58. Floating part; 59. Claw; 501. Telescopic cylinder; 502. Piston; 503. Guide ring; 504. Elastic element; 551. Connecting seat; 552. First limiting plate; 553. Second limiting plate; 554. Pre-tightening component; 555. Limiting shaft; 581. Floating rod; 582. One-way locking tooth rod; 583. Locking tooth tension spring; 584. Base; 7. Support frame; 71. Upper support plate; 72. Support rod; 73. Lower support plate; 11. First sliding part; 12. Second sliding part; 111. First slider; 112. Second slider; 113. First slide rail; 114. First connecting rod; 115. Second connecting rod; 116, first connecting plate; 117, first moving shaft; 118, second moving shaft; 21, first clamping part; 22, second clamping part; 211, first drive motor; 212, first fixed frame; 213, first rotary motor; 214, first guide wheel; 215, second drive motor; 216, second rotary motor; 217, second guide wheel; 218, first connecting frame; 219, second connecting frame; 221, clamping frame; 222, third guide wheel; 223. Fourth guide wheel; 224. First motor; 225. Second motor; 226. Third connecting frame; 6. Drive assembly; 61. Electric motor; 62. Connecting block; 63. Slide rod; 8. Pipe end shaping assembly; 80. Shaping frame; 81. First shaping rod; 82. Second shaping rod; 83. First elastic element; 84. Second elastic element; 85. Drive motor; 86. Guide shaft; 87. Lifting slider; 88. First shaping block; 89. Second shaping block; 9. Lifting frame. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] To address the problems encountered in coiled tubing welding operations, such as the time-consuming nature, safety hazards, and difficulty in adapting to coiled tubing bending deformation using traditional methods, this invention provides a coiled tubing welding device. This device significantly improves the efficiency of coiled tubing welding, avoids the safety risks associated with open flame operations in existing welding processes, and overcomes the welding difficulties caused by coiled tubing bending deformation. The purpose of this invention is to simplify the welding operation process, reduce downtime, and lower the skill requirements for operators, thereby increasing the application efficiency and scope of coiled tubing in various oil and gas extraction operations.

[0038] like Figure 1 As shown, the present invention provides a continuous tube docking device, comprising: a first conveying assembly 1, a first clamping assembly 2, a second conveying assembly 3, a second clamping assembly 4, a docking assembly 5, and a driving assembly 6. The first clamping assembly 2 is disposed on the first conveying assembly 1 and can clamp the first continuous tube 10. The first conveying assembly 1 can also adjust the position of the first continuous tube 10. The second clamping assembly 4 is disposed on the second conveying assembly 3 and can clamp the second continuous tube 20. The second conveying assembly 3 can also adjust the position of the second continuous tube 20. In this invention, the docking assembly 5 is positioned between the first conveying assembly 1 and the second conveying assembly 3. A first continuous tube 10, clamped on the first clamping assembly 2, moves towards the docking assembly 5 until it is sleeved onto one end of the docking assembly 5. A second continuous tube 20, clamped on the second clamping assembly 4, moves towards the docking assembly 5 until it is sleeved onto the other end of the docking assembly 5. A driving assembly 6 is positioned above the docking assembly 5 and is connected to it for transmission. This causes the docking assembly 5 to rub against the inner walls of the first continuous tube 10 and the second continuous tube 20, generating high temperatures. The docking assembly 5 is located between the first clamping assembly 2 and the second clamping assembly 4. By driving the docking assembly 5 with the driving assembly 6, friction occurs between the docking assembly 5 and the inner walls of the first continuous tube 10 and the second continuous tube 20, generating high temperatures, thereby achieving welding of the first continuous tube 10 and the second continuous tube 20. The device of this invention has a high degree of integration and automation, reducing manual intervention in the welding process, further improving work safety, and increasing work efficiency. Furthermore, the structure of this device is simpler and its size is relatively smaller compared to traditional devices.

[0039] like Figure 2As shown, in one embodiment, the docking assembly 5 includes a docking tube 51, a rotating cylinder 52, and a connecting rod 53. A drive assembly 6 is connected to the rotating cylinder 52. The rotating cylinder 52 is sleeved on the docking tube 51, and the connecting rod 53 passes through the rotating cylinder 52 and connects to the docking tube 51. The first continuous tube 10 and the second continuous tube 20 are respectively sleeved at both ends of the docking tube 51. It should be noted that the rotating cylinder 52 is first driven to rotate by the drive assembly 6. Since the connecting rod 53 passes through the rotating cylinder 52 and connects to the docking tube 51, it can drive the entire docking tube 51 to rotate. Friction occurs between the docking tube 51 and the first continuous tube 10 and the second continuous tube 20, generating heat. This heat is used to weld the first continuous tube 10 and the second continuous tube 20. This welding process does not require manual welding, thus improving welding efficiency and safety. Optionally, the docking tube 51 has grooves at both ends, and sealing rings are disposed within these grooves for sealing.

[0040] like Figure 3 As shown, in one embodiment, the docking assembly 5 further includes two fixing rings 54, multiple pre-tightening parts 55, two annular plates 56, and multiple friction plates 57. The two fixing rings 54 are respectively spaced and sleeved on the docking tube 51. The multiple pre-tightening parts 55 are located between the two fixing rings 54. The two ends of the multiple pre-tightening parts 55 pass through the two fixing rings 54 and are connected to the friction plates 57 along the axial direction of the docking tube 51. The friction plates 57 are in contact with the inner walls of the first continuous tube 10 and the second continuous tube 20. The pre-tightening parts 55 are spaced apart by a preset distance. The two annular plates 56 are spaced and sleeved on the pre-tightening parts 55. The connecting rod 53 passes through the rotating cylinder 52 and is threadedly connected to the pre-tightening parts 55. Two retaining rings 54 fix and limit the position of the pre-tightening part 55 and the friction plate 57. The tension of the pre-tightening part 55 is controlled by the connecting rod 53, causing the pre-tightening part 55 to tighten or expand radially. When the drive rotating cylinder 52 rotates at a sufficiently high speed, the friction plate 57 contacts and rubs against the inner walls of the first continuous tube 10 and the second continuous tube 20, ultimately achieving friction welding of the two continuous tubes. Optionally, there are six pre-tightening parts 55 and six friction plates 57.

[0041] like Figure 4As shown, in one embodiment, the docking assembly 5 further includes multiple floating parts 58, multiple claws 59, multiple telescopic cylinders 501, and multiple pairs of pistons 502. The multiple claws 59 are respectively arranged circumferentially along the two fixed rings 54. The multiple telescopic cylinders 501 are respectively arranged circumferentially along the rotating cylinder 52 and pass through the rotating cylinder 52 to align with the floating parts 58. The pre-tightening part 55 is arranged adjacent to the floating part 58, and the two ends of the floating part 58 are respectively hinged to each pair of pistons 502. Each pair of pistons 502 extends into the through holes at both ends of the fixed ring 54 and contacts the end of the claw 59 in the radial direction of the through hole, so that the claw 59 is engaged with the inner wall of the first continuous tube 10 and the second continuous tube 20. An elastic element 504 is provided in the diameter direction of the through hole to connect with the claw 59. It should be noted that by driving multiple telescopic cylinders 501 to extend and abut against the corresponding floating parts 58, the ends of the floating parts 58 can continuously move the driving piston 502 towards the end of the claw 59. Since the end of the piston 502 is an inclined surface, that is, the end cross-section of the piston 502 is a trapezoidal structure, the piston 502 gradually lifts the end of the claw 59, so that the claw 59 abuts against the inner wall of the first continuous tube 10 and the second continuous tube 20. Moreover, the surface of the claw 59 has a textured stripe structure, which further increases the gripping force inside the tube. Optionally, the elastic element 504 is a spring. The elastic element 504 is in a contracted state, thereby avoiding the collision between the claw 59 and the inner wall of the continuous tube during friction welding. There are six floating parts 58 and six claws 59.

[0042] In one embodiment, the pre-tightening part 55 includes a connecting seat 551, a first limiting plate 552, and a second limiting plate 553. The first limiting plate 552 and the second limiting plate 553 are respectively connected to the friction plate 57 through two fixing rings 54. The two ends of the connecting seat 551 are respectively engaged with the first limiting plate 552 and the second limiting plate 553. Two annular plates 56 are sleeved on the two ends of the connecting seat 551. The connecting rod 53 passes through the rotating cylinder 52 and is connected to the connecting seat 551. Optionally, the ends of the first limiting plate 552 and the second limiting plate 553 are provided with protrusions, and the two ends of the connecting seat 551 are provided with slots. The protrusions cooperate with the slots. The advantage of this arrangement is that it is easy to disassemble. When the connecting rod 53 is tightened on the connecting seat 551, the connecting seat 551 will tighten, which indirectly affects the contact between the friction plate 57 connected to the first limiting plate 552 and the second limiting plate 553 and the two continuous tubes, thereby facilitating the control of the welding process. The position of the connecting seat 551 can be further restricted and fixed by the annular plate 56.

[0043] like Figure 6As shown, in one embodiment, the pre-tightening part 55 further includes two elastic pre-tightening members 554 and two limiting shafts 555. The two elastic pre-tightening members 554 pass through two fixing rings 54 and are respectively connected to the first limiting plate 552 and the second limiting plate 553, and the two limiting shafts 555 pass through the first limiting plate 552 and the second limiting plate 553 at the connection with the friction plate 57. The elastic pre-tightening members 554 can fix the position of the first limiting plate 552 and the second limiting plate 553, and the limiting shafts 555 can further restrict the axial position of the first limiting plate 552 and the second limiting plate 553.

[0044] like Figure 5 As shown, in one embodiment, the floating part 58 includes a floating rod 581, two one-way locking rods 582, two locking springs 583, and a base 584. One end of each of the two one-way locking rods 582 is located on both sides of the base 584, and the other ends of the two one-way locking rods 582 are spaced apart so that the floating rod 581 is within the interval. The two ends of the two locking springs 583 are respectively located on both sides of the base 584 and connected to the top ends of the two one-way locking rods 582. The floating rod 581 is located above the base 584, and the two ends of the floating rod 581 are respectively hinged to two piston parts 502. The telescopic cylinder 501 is aligned with the floating rod 581. It should be noted that by driving the telescopic cylinder 501 to press against the floating rod 581, the floating rod 581 gradually approaches the base 584, and the floating rod 581 descends to the next level of the two one-way locking rods 582 and locks onto the two one-way locking rods 582. The locking spring 583 is also in a compressed state. Under the force of the locking spring 583, the one-way locking rod 582 is always in a close state with the outer side of the floating rod 581. The one-way locking rod 582 and the floating rod 581 are in a one-way locked state. That is, after the external force is removed, the floating rod 581 cannot self-reset under the force of the one-way locking rod 582. Optionally, the floating rod 581 and the piston 502 are connected by two connectors, and the two ends of the connectors are hinged to the floating rod 581 and the piston 502 respectively. Since the floating rod 581 and the two connectors form an arched structure, the arched structure of the floating rod 581 gradually disappears when it is pressed down until the floating rod 581 and the two connectors form a straight line, thereby facilitating the floating rod 581 to drive the piston 502.

[0045] In one embodiment, the docking assembly 5 further includes two guide rings 503, which are respectively sleeved on both ends of the docking tube 51. Multiple guide wheels are provided on the guide rings 503, and a friction plate 57 is located between the guide rings 503 and the fixing ring 54. The two guide rings 503 provide centering for the entire docking assembly 5. The multiple guide wheels rotate on the inner wall of the continuous tube. Optionally, the guide rings 503 and the docking tube 51 are connected by multiple connecting posts, making the connection between the guide rings 503 and the docking tube 51 more stable.

[0046] like Figure 1 As shown, in one embodiment, it further includes a support frame 7, with the first conveying component 1 and the second conveying component 3 disposed on the inner wall of the support frame 7, and the driving component 6 and the docking component 5 located at the center of the support frame 7. Optionally, the support frame 7 includes an upper support plate 71 and a lower support plate 73, as well as four support rods 72. The two support plates are arranged in parallel, and the two ends of the four support rods 72 are respectively connected to the four edge surfaces of the two support plates, thereby forming a support space to facilitate the placement of the first conveying component 1 and the second conveying component 3 on the upper and lower surfaces of the support plates. It should be noted that two parallel sliding rods 63 are provided on both sides of the middle area of ​​the two support plates, and the driving component 6 can be slidably disposed on the sliding rods 63.

[0047] like Figure 7 As shown, in one embodiment, the first conveying assembly 1 includes a first sliding part 11 and a second sliding part 12, which are slidably disposed on the upper and lower support surfaces of the support frame 7, respectively. A first clamping assembly 2 is located between the first sliding part 11 and the second sliding part and is connected to both the first sliding part 11 and the second sliding part. It should be noted that by driving the first sliding part 11 and the second sliding part 12 to move on the upper and lower support surfaces of the support frame 7, the position of the first continuous tube 10 clamped by the first clamping assembly 2 can be adjusted, making it easier to connect the first continuous tube 10 and the second continuous tube 20. Specifically, the first sliding part 11 and the second sliding part 12 have the same structure.

[0048] In one embodiment, the first sliding part 11 includes a first slide rail 113, a first slider 111, a second slider 112, and a first connecting plate 116. The first slide rail 113 is disposed on the inner support surface of the support frame 7. The first slider 111 and the second slider 112 are installed on the first slide rail 113 at a preset interval. The first slider 111 is connected to the slider in the second sliding part 12 through a first connecting rod 114 and a second connecting rod 115 that are parallel to each other. The first clamping part 21 on the first clamping assembly 2 is disposed on the first connecting rod 114 and the second connecting rod 115. One end of the first connecting plate 116 is vertically connected to the second slider 112, and the other end is connected to one side of the first clamping assembly 2 that has the second clamping part 22. The other side of the second clamping part 22 is connected to another slider on the second sliding part 12. Optionally, since the first sliding part 11 and the second sliding part 12 have the same structure, the second sliding part 12 also has two corresponding sliders, a slide rail, and a connecting plate. The arrangement of these components is the same as that of the components in the first sliding part 11, and therefore will not be described again. It should be noted that the first slider 111 and the second slider 112 can be driven to move on the first slide rail 113, simultaneously causing the sliders in the second sliding part 12 to move on their corresponding slide rails. This, in turn, drives the first clamping part 21 and the second clamping part 22 to move, thereby adjusting the position of the clamped first continuous tube 10 to facilitate the docking of the continuous tube.

[0049] In one embodiment, the first sliding part 11 further includes a first moving shaft 117 and a second moving shaft 118. The first moving shaft 117 is threadedly connected to the first slider 111, and the second moving shaft 118 passes through the first moving shaft 117 and is threadedly connected to the second slider 112. It should be noted that by driving the first moving shaft 117 to rotate, the first slider 111 is pushed to move on the first slide rail 113, and the second slider 112 moves simultaneously on the first slide rail 113, with the distance between the first slider 111 and the second slider 112 being the same. By driving the second moving shaft 118 to rotate, the distance between the first slider 111 and the second slider 112 can be adjusted, facilitating adjustment of the distance between the first slider 111 and the second slider 112 according to the length of the continuous tube. When the distance between the first slider 111 and the second slider 112 is reduced, it facilitates the continuous tube entering the clamping assembly. When the distance between the first slider 111 and the second slider 112 is increased, it ensures that the continuous tube can be straightened, ultimately driving the continuous tube closer to the docking assembly 5. Optionally, since the second sliding part 12 and the first sliding part 11 have the same structure, the second sliding part 12 also includes two moving shafts. Of course, the connection method and working method are the same as those of the first moving shaft 117 and the second moving shaft 118 in the first sliding part 11, and will not be described here.

[0050] In one embodiment, the first conveying assembly 1 and the second conveying assembly 3 have the same structure. Therefore, the second conveying assembly 3 also includes two sliding parts, each of which contains two sliders, a slide rail, two moving shafts, etc., thereby enabling the second clamping assembly 4 connected to the sliders to move.

[0051] In one embodiment, the first clamping assembly 2 includes a first clamping portion 21 and a second clamping portion 22. The two ends of the first clamping portion 21 and the second clamping portion 22 are respectively connected to a first sliding portion 11 and a second sliding portion 12 in the first conveying assembly 1, and both the first clamping portion 21 and the second clamping portion 22 are located between the first sliding portion 11 and the second sliding portion 12. Specifically, the first clamping portion 21 is disposed on a first connecting rod 114 and a second connecting rod 115. The same end of the first connecting rod 114 and the second connecting rod 115 is connected to a first slider 111 in the first sliding portion 11, and the other end of the first connecting rod 114 and the second connecting rod 115 is connected to a slider in the second sliding portion 12. One side of the second clamping portion 22 is connected to the second slider 112 via a first connecting plate 116, and the other side of the second clamping portion 22 is connected to another slider in the second sliding portion 12 via another connecting plate. The first clamping portion 21 and the second clamping portion 22 are spaced apart. The first continuous tube 10 can be clamped more stably by the first clamping portion 21 and the second clamping portion 22. It should be noted that the first clamping part 21 and the second clamping part 22 can also push the first continuous tube 10 to move toward the docking assembly 5 to achieve this function. The first clamping part 21 or the second clamping part 22 need to be explained in detail.

[0052] Furthermore, the first clamping part 21 includes a first drive motor 211, a first fixed frame 212, a first rotary motor 213, a first guide wheel 214, a second drive motor 215, a second rotary motor 216, and a second guide wheel 217. One end of the first drive motor 211 is disposed on the first slider 111. The two sides of the first fixed frame 212 are disposed on the first connecting rod 114 and the second connecting rod 115. The shaft of the first drive motor 211 passes through the top surface of the first fixed frame 212 and is connected to the first connecting frame 218 of the first guide wheel 214. The two sides of the first connecting frame 218 are slidably disposed on the first fixed frame 212, and the first drive motor... 211 drives the first connecting frame 218 to slide on the first fixed frame 212, thereby driving the first guide wheel 214 to move closer to the first continuous tube 10. The first guide wheel 214 is rotatably mounted on the first connecting frame 218, allowing the first guide wheel 214 to rotate freely. The first rotary motor 213 is located on the outside of the first fixed frame 212 and is connected to the first guide wheel 214 in a transmission connection. The first rotary motor 213 and the first guide wheel 214 are connected by a conveyor belt. The first rotary motor 213 drives the first guide wheel 214 to rotate, thereby giving the first continuous tube 10 a driving force, causing the first continuous tube 10 to move toward the docking assembly 5.

[0053] The shaft of the second drive motor 215 passes through the bottom end face of the first fixed frame 212 and is connected to the second connecting frame 219 of the second guide wheel 217. The two sides of the second connecting frame 219 are slidably mounted on the first fixed frame 212. The second guide wheel 217 is rotatably mounted on the second connecting frame 219. The second rotary motor 216 is located on the outside of the first fixed frame 212 and is connected to the second guide wheel 217 for transmission. The first continuous tube 10 is sandwiched between the first guide wheel 214 and the second guide wheel 217. The first rotary motor 213 and the first guide wheel 214 are connected by a conveyor belt. By simultaneously driving the first drive motor 211 and the second drive motor 215 to move toward the first continuous tube 10, the first continuous tube 10 is clamped. At the same time, the first rotary motor 213 and the second rotary motor 216 respectively drive the first guide wheel 214 and the second guide wheel 217 to rotate, thereby driving the first continuous tube 10 to move toward the docking assembly 5. It should be noted that the height position and rotation speed of either guide wheel can be adjusted. The faster the rotation speed, the faster the first continuous tube 10 will be transported. Alternatively, the height position and rotation speed of the first guide wheel 214 and the second guide wheel 217 can be adjusted simultaneously.

[0054] In one embodiment, the second clamping part 22 includes a clamping frame 221, a third guide wheel 222, and a fourth guide wheel 223. The two sides of the clamping frame 221 are respectively connected to the sliders in the first sliding part 11 and the second sliding part 12. Specifically, the clamping frame 221 is connected to the sliders in the first sliding part 11 and the second sliding part 12 via two first connecting plates 116. The third guide wheel 222 and the fourth guide wheel 223 are disposed inside the clamping frame 221 and are respectively connected to two first motors 224 on the outer wall of the clamping frame 221. By driving the two first motors 224 to rotate, the clamped first continuous tube 10 is moved towards the docking assembly 5. It should be noted that the third guide wheel 222 and the fourth guide wheel 223 also have two corresponding third connecting frames 226. The two sides of the third connecting frame 226 are slidably disposed on both sides of the clamping frame 221. The third guide wheel 222 and the fourth guide wheel 223 can also rotate on the third connecting frame 226. Furthermore, two corresponding second motors 225 are provided on both sides of the outer wall of the clamping frame 221. The shafts of the second motors 225 are connected to each third connecting frame 226, thereby driving each connecting frame to move within the clamping frame 221. That is, driving the third guide wheel 222 and the fourth guide wheel 223 to move toward the first continuous tube 10, thereby clamping the first continuous tube 10.

[0055] In one embodiment, the first clamping component 2 and the second clamping component 4 have identical structures. It should be noted that since the two clamping components have identical structures, their specific structures and functions are also the same, and will not be described further here. Furthermore, the first clamping component 2 and the second clamping component 4 can clamp continuous tubes of different diameters.

[0056] like Figure 8 As shown, in one embodiment, the drive assembly 6 includes a connecting block 62 and a motor 61. The two ends of the connecting block 62 are slidably mounted on two parallel sliding rods 63 within the support frame 7. The motor 61 is mounted on the connecting block 62, and the motor 61 and the docking assembly 5 are connected via a conveyor belt. The motor 61 can drive the docking assembly 5 to rotate, and the rotation speed of the docking assembly 5 can be controlled. Furthermore, by adjusting the height of the connecting block 62, the docking assembly 5 can be aligned with the height of the two continuous tubes. In addition, the conveyor belt not only drives the docking assembly 5 to rotate but also serves as a suspension for the docking assembly 5.

[0057] like Figure 9As shown, in one embodiment, it further includes a pipe end shaping assembly 8, located below the docking assembly 5. The pipe end shaping assembly 8 includes a shaping frame 80, a first shaping rod 81, a second shaping rod 82, a first elastic element 83, a second elastic element 84, a drive motor 85, a guide shaft 86, and a lifting slider 87. The two connecting ends of the shaping frame 80 are slidably mounted on the slide rod 63. The two ends of the guide shaft 86 are respectively connected to the two side walls of the shaping frame 80 and are parallel to one side of the shaping frame 80. A first shaping block 88 and a second shaping block 87 are sleeved on the guide shaft 86. The first elastic element 83 is disposed between the first shaping block 88 and the inner wall of the shaping frame 80, and the second elastic element 84 is disposed between the second shaping block 89 and the inner wall of the shaping frame 80. The first shaping rod 81 passes through one side of the shaping frame 80 and is connected to the first shaping block 88. The second shaping rod 82 passes through the other side of the shaping frame 80 and is connected to the second shaping block 89. The shaft of the drive motor 85 passes through the bottom side of the shaping frame 80 and is connected to the lifting slider 87 inside the shaping frame 80. The two ends of the lifting slider 87 are located between the inclined surfaces of the first shaping block 88 and the second shaping block 89. The lifting slider 87 is driven upward by the drive motor 85. The lifting slider 87 presses against the first shaping block 88 and the second shaping block 89 at both ends, causing them to move away from each other. The first elastic element 83 and the second elastic element 84 are compressed, and the first shaping rod 81 and the second shaping rod 82 extend into the openings of the two continuous tubes, shaping the irregular openings of the continuous tubes into regular circular structures. When the driving force of the drive motor 85 is removed, the lifting slider 87 returns to its original position. Under the elastic force of the first elastic element 83 and the second elastic element 84, the first shaping block 88 and the second shaping block 89 move on the guide shaft 86 and move closer to each other until they are reset. The first shaping rod 81 and the second shaping rod 82 also retract into the shaping frame 80. Optionally, the drive motor 85 can be a shaping cylinder.

[0058] In one embodiment, a lifting frame 9 is also included, which is connected to the bottom of the support frame 7. Optionally, the lifting frame 9 can be adjusted by a hydraulic cylinder to accommodate the docking of continuous pipes at different heights.

[0059] In summary, the continuous pipe butt welding device of the present invention integrates functions such as continuous pipe conveying, clamping, pipe end shaping, butt welding, friction welding connection, and internal clamping, simulating on-site continuous pipe operations to the greatest extent. This device has a high degree of integration and automation, reducing manual intervention and further improving operational safety and efficiency. It establishes a rapid and reliable connection and welding process for continuous pipes, further standardizing and optimizing continuous pipe butt welding technology.

[0060] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous pipe docking device, characterized in that, include: The assembly comprises a first conveying component (1), a first clamping component (2), a second conveying component (3), a second clamping component (4), a docking component (5), and a driving component (6). The first clamping component (2) is disposed on the first conveying component (1), the second clamping component (4) is disposed on the second conveying component (3), and the docking component (5) is disposed between the first conveying component (1) and the second conveying component (3). A first continuous tube (10) clamped on the first clamping component (2) moves toward the docking component (5) until it is sleeved on one end of the docking component (5). A second continuous tube (20) clamped on the second clamping component (4) moves toward the docking component (5) until it is sleeved on the other end of the docking component (5). The driving component (6) is raised and lowered above the docking component (5) and is connected to the docking component (5) in a transmission manner to drive the docking component (5) to rotate and generate heat by friction with the inner walls of the first continuous tube (10) and the second continuous tube (20), respectively.

2. The continuous pipe docking device according to claim 1, characterized in that, The docking assembly (5) includes a docking tube (51), a rotating cylinder (52), and a connecting rod (53). The driving assembly (6) is connected to the rotating cylinder (52) in a transmission manner. The rotating cylinder (52) is sleeved on the docking tube (51). The connecting rod (53) passes through the rotating cylinder (52) and is connected to the docking tube (51). The first continuous tube (10) and the second continuous tube (20) are respectively sleeved on both ends of the docking tube (51).

3. The continuous pipe docking device according to claim 2, characterized in that, The docking assembly (5) further includes two fixing rings (54), multiple pre-tightening parts (55), two annular plates (56), and multiple friction plates (57). The two fixing rings (54) are respectively spaced on the docking tube (51). The multiple pre-tightening parts (55) are located between the two fixing rings (54). The two ends of the multiple pre-tightening parts (55) pass through the two fixing rings (54) along the axial direction of the docking tube (51) and are connected to the friction plates (57). The friction plates (57) are in contact with the inner walls of the first continuous tube (10) and the second continuous tube (20). The pre-tightening parts (55) are spaced apart by a preset distance. The two annular plates (56) are spaced on the pre-tightening parts (55). The connecting rod (53) passes through the rotating cylinder (52) and is threadedly connected to the pre-tightening parts (55).

4. The continuous pipe docking device according to claim 3, characterized in that, The docking assembly (5) further includes multiple floating parts (58), multiple claws (59), multiple telescopic cylinders (501), and multiple pairs of pistons (502). The multiple claws (59) are arranged circumferentially at intervals along the two fixed rings (54). The multiple telescopic cylinders (501) are arranged circumferentially at intervals along the rotating cylinder (52) and pass through the rotating cylinder (52) to align with the floating parts (58). The pre-tightening part (55) is arranged adjacent to the floating part (58), and the two ends of the floating part (58) are respectively hinged to each pair of pistons (502). Each pair of pistons (502) extends into the through holes at both ends of the fixed ring (54) and contacts the end of the claw (59) in the radial direction of the through hole. An elastic element (504) is provided in the diameter direction of the through hole to connect with the claw (59).

5. The continuous pipe docking device according to claim 3, characterized in that, The pre-tightening part (55) includes a connecting seat (551), a first limiting plate (552) and a second limiting plate (553). The first limiting plate (552) and the second limiting plate (553) pass through the two fixing rings (54) and are connected to the friction plate (57). The two ends of the connecting seat (551) are respectively snapped onto the first limiting plate (552) and the second limiting plate (553). The two annular plates (56) are sleeved on the two ends of the connecting seat (551). The connecting rod (53) passes through the rotating cylinder (52) and is connected to the connecting seat (551).

6. The continuous pipe docking device according to claim 5, characterized in that, The pre-tightening part (55) further includes two elastic pre-tightening members (554) and two limiting shafts (555). The two elastic pre-tightening members (554) pass through the two fixing rings (54) and are respectively connected to the first limiting plate (552) and the second limiting plate (553). The two limiting shafts (555) pass through the first limiting plate (552) and the second limiting plate (553) at the connection with the friction plate (57).

7. The continuous pipe docking device according to claim 4, characterized in that, The floating part (58) includes a floating rod (581), two one-way toothed rods (582), two toothed tension springs (583), and a base (584). One end of each of the two one-way toothed rods (582) is located on both sides of the base (584), and the other ends of the two one-way toothed rods (582) are spaced apart so that the floating rod (581) is within the interval. The two ends of the two toothed tension springs (583) are respectively located on both sides of the base (584) and connected to the top ends of the two one-way toothed rods (582). The floating rod (581) is located above the base (584), and the two ends of the floating rod (581) are respectively hinged to the two piston parts (502). The telescopic cylinder (501) is aligned with the floating rod (581).

8. The continuous pipe docking device according to claim 3, characterized in that, The docking assembly (5) further includes two guide rings (503), which are respectively sleeved on both ends of the docking tube (51). Multiple guide wheels are provided on the guide rings (503), and the friction plate (57) is between the guide rings (503) and the fixing ring (54).

9. The continuous pipe docking device according to claim 1, characterized in that, It also includes a support frame (7), the first conveying component (1) and the second conveying component (3) are disposed on the inner wall of the support frame (7), and the driving component (6) and the docking component (5) are located at the center of the support frame (7).

10. The continuous pipe docking device according to claim 9, characterized in that, The first conveying component (1) includes a first sliding part (11) and a second sliding part (12). The first sliding part (11) and the second sliding part (12) are slidably disposed on the upper and lower support surfaces of the support frame (7), respectively. The first clamping component (2) is located between the first sliding part (11) and the second sliding part and is connected to the first sliding part (11) and the second sliding part, respectively.

11. The continuous pipe docking device according to claim 10, characterized in that, The first sliding part (11) includes a first slide rail (113), a first slider (111), a second slider (112), and a first connecting plate (116). The first slide rail (113) is disposed on the inner support surface of the support frame (7). The first slider (111) and the second slider (112) are installed on the first slide rail (113) at a preset distance. The first slider (111) is connected to the slider in the second sliding part (12) through the first connecting rod (114) and the second connecting rod (115) which are parallel to each other. The first clamping part (21) on the first clamping assembly (2) is disposed on the first connecting rod (114) and the second connecting rod (115). One end of the first connecting plate (116) is vertically connected to the second slider (112), and the other end is connected to one side of the first clamping assembly (2) with the second clamping part (22). The other side of the second clamping part (22) is connected to another slider on the second sliding part (12).

12. The continuous pipe docking device according to claim 11, characterized in that, The first sliding part (11) further includes a first moving shaft (117) and a second moving shaft (118). The first moving shaft (117) is threadedly connected to the first slider (111), and the second moving shaft (118) passes through the first moving shaft (117) and the second slider (112) and is threadedly connected.

13. The continuous pipe docking device according to claim 11, characterized in that, The first clamping assembly (2) includes a first clamping part (21) and a second clamping part (22). The two ends of the first clamping part (21) and the second clamping part (22) are respectively connected to the first sliding part (11) and the second sliding part (12) in the first conveying assembly (1). The first clamping part (21) and the second clamping part (22) are both located between the first sliding part (11) and the second sliding part (12). The first clamping part (21) and the second clamping part (22) are spaced apart.

14. The continuous pipe docking device according to claim 13, characterized in that, The first clamping part (21) includes a first drive motor (211), a first fixed frame (212), a first rotary motor (213), a first guide wheel (214), a second drive motor (215), a second rotary motor (216), and a second guide wheel (217). One end of the first drive motor (211) is disposed on the first slider (111). The two sides of the first fixed frame (212) are disposed on the first connecting rod (114) and the second connecting rod (115). The shaft of the first drive motor (211) passes through the top surface of the first fixed frame (212) and is connected to the first connecting frame (218) of the first guide wheel (214). The two sides of the first connecting frame (218) are slidably disposed on the first fixed frame (212). The first guide wheel (214) is rotatably disposed on the first connecting frame (218). The first rotary motor (213) is disposed on the outside of the first fixed frame (212) and is connected to the first guide wheel (214) in a transmission. The shaft of the second drive motor (215) passes through the bottom end face of the first fixed frame (212) and is connected to the second connecting frame (219) of the second guide wheel (217). The two sides of the second connecting frame (219) are slidably disposed on the first fixed frame (212). The second guide wheel (217) is rotatably disposed on the second connecting frame (219). The second rotary motor (216) is disposed on the outside of the first fixed frame (212) and is connected to the second guide wheel (217) for transmission. A first continuous tube (10) is sandwiched between the first guide wheel (214) and the second guide wheel (217).

15. The continuous pipe docking device according to claim 13, characterized in that, The second clamping part (22) includes a clamping frame (221), a third guide wheel (222) and a fourth guide wheel (223). The two sides of the clamping frame (221) are respectively connected to the slider in the first sliding part (11) and the slider in the second sliding part (12). The third guide wheel (222) and the fourth guide wheel (223) are located inside the clamping frame (221) and are respectively connected to two motors on the outer wall of the clamping frame (221).

16. The continuous pipe docking device according to claim 9, characterized in that, The drive assembly (6) includes a connecting block (62) and a motor (61). The two ends of the connecting block (62) are slidably mounted on two parallel sliding rods inside the support frame (7). The motor (61) is mounted on the connecting block (62). The motor (61) and the docking assembly (5) are connected by a conveyor belt.

17. The continuous pipe docking device according to claim 16, characterized in that, It also includes a pipe end shaping assembly (8), which is located below the docking assembly (5). The pipe end shaping assembly (8) includes a shaping frame (80), a first shaping rod (81), a second shaping rod (82), a first elastic element (83), a second elastic element (84), a drive motor (85), a guide shaft (86), and a lifting slider (87). The two connecting ends of the shaping frame (80) are slidably mounted on the slide rod (63). The two ends of the guide shaft (86) are respectively connected to the two side walls of the shaping frame (80) and are parallel to one side of the shaping frame (80). The first shaping block (88) and the second shaping block (89) are sleeved on the guide shaft (86). The first elastic element (88) 83) The first shaping block (88) and the inner wall of the shaping frame (80) are disposed between the first shaping block (88) and the inner wall of the shaping frame (80). The second elastic element (84) is disposed between the second shaping block (89) and the inner wall of the shaping frame (80). The first shaping rod (81) passes through one side of the shaping frame (80) and is connected to the first shaping block (88). The second shaping rod (82) passes through the other side of the shaping frame (80) and is connected to the second shaping block (89). The shaft of the drive motor (85) passes through the bottom side of the shaping frame (80) and is connected to the lifting slider (87) inside the shaping frame (80). The two ends of the lifting slider (87) are located between the inclined surfaces of the first shaping block (88) and the second shaping block (89).

18. The continuous pipe docking device according to claim 9, characterized in that, It also includes a lifting frame (9), which is connected to the bottom of the support frame (7).

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