Lining oil pipe machining device and method

Abstract

The invention discloses a lining oil pipe machining device and method, and relates to the technical field of petroleum engineering.The lining oil pipe machining device comprises a conveying mechanism, a heating mechanism and a flanging mechanism, the conveying mechanism extends in the axial direction of a lining oil pipe, and a flanging position is arranged at one end of the conveying mechanism; a heating position is arranged between the other end of the conveying mechanism and the flanging position; the heating mechanism is erected at the heating position; the flanging mechanism is arranged at the flanging position and extends out of one end of the conveying mechanism from the flanging position to the direction deviating from the heating mechanism; wherein the lining oil pipe is placed on the conveying mechanism, the conveying mechanism is used for driving the lining oil pipe to move between the heating position and the flanging position, and correspondingly, the lining oil pipe is arranged outside the heating mechanism in a sleeving mode or the flanging mechanism is arranged outside the lining oil pipe in a sleeving mode. According to the invention, the problem of non-uniform flanging or inconsistent wall thickness distribution caused by non-uniform pressure in traditional hydraulic flanging is avoided, and the connection reliability and sealing performance of the lining oil pipe are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of petroleum engineering, and particularly relates to a lining tubing processing device and method. Background Art

[0002] With the rapid development of the oil and gas industry, lining tubing is often used as a key device to ensure the safe transportation of oil and gas. The flanging process of lining tubing is an important process to ensure the connection reliability and sealing performance of pipelines.

[0003] Currently, the flanging process of lining tubing is mainly realized by hydraulic expansion forming technology. Through a special hydraulic flanging device, the non-coupling end of the lining tubing is placed in a mold, and a uniform pressure is applied to the tube wall of the lining tubing by a high-pressure liquid medium, so that the tube end gradually expands and deforms along the mold contour, and finally a flanging structure is formed.

[0004] However, the existing hydraulic flanging mechanism has a complex structure and is difficult to debug and maintain, making it difficult to control the pressure during the flanging process, easily resulting in uneven flanging or inconsistent wall thickness distribution of the lining tubing, and affecting the connection reliability of the lining tubing. Summary of the Invention

[0005] The main object of the present invention is to propose a lining tubing processing device and method, aiming to improve the flanging quality of the non-coupling end of the lining tubing and enhance the connection reliability of the lining tubing.

[0006] To achieve the above object, the lining tubing processing device proposed by the present invention includes: A conveying mechanism, the conveying mechanism extends along the axial direction of the lining tubing, one end of the conveying mechanism is provided with a flanging position, and a heating position is provided between the other end of the conveying mechanism and the flanging position; A heating mechanism, the heating mechanism is erected at the heating position; A flanging mechanism, the flanging mechanism is arranged at the flanging position, and the flanging mechanism extends out of one end of the conveying mechanism from the flanging position in a direction away from the heating mechanism; Wherein, the lining tubing is placed on the conveying mechanism, and the conveying mechanism is used to drive the lining tubing to move between the heating position and the flanging position, correspondingly sleeving the lining tubing outside the heating mechanism or sleeving the flanging mechanism outside the lining tubing.

[0007] In one embodiment, the flanging mechanism includes a support base, a mounting ring, a flanging assembly, and a first driving member. The support base extends vertically, and the support base is mounted at the flanging position. The mounting ring is rotatably disposed on the support base. The support base, the mounting ring, and the inner lining oil pipe are coaxially arranged. The flanging assembly is detachably mounted on the outer edge of the mounting ring. The first driving member is connected to the mounting ring and is used to drive the mounting ring to drive the flanging assembly in contact with and pressing against the end of the inner lining oil pipe to move circumferentially along the inner lining oil pipe when the flanging mechanism is sleeved outside the inner lining oil pipe.

[0008] In one embodiment, the flanging assembly includes a mounting frame, a tensioning member, and a flanging member. The mounting frame extends along the axial direction of the inner lining oil pipe. The mounting frame is detachably mounted on the mounting ring. The flanging member is disposed on one side of the mounting ring. The flanging member is hinged to the end of the mounting frame away from the mounting ring. The tensioning member extends along the radial direction of the inner lining oil pipe. The tensioning member is disposed between the mounting frame and the flanging member. The tensioning member is used to tension the flanging member from the outside of the inner lining oil pipe towards the inside of the inner lining oil pipe.

[0009] In one embodiment, the mounting frame includes a connecting portion, a transition portion, and a mounting portion. The connecting portion is detachably mounted on the mounting ring. The mounting portion extends out of the side of the mounting ring away from the heating mechanism. The mounting portion is transitionally connected to the connecting portion through the transition portion. The flanging member is hinged to the mounting portion.

[0010] In one embodiment, the flanging member includes a connecting rod, a rotating shaft, and a flanging portion. The rotating shaft extends along the radial direction of the inner lining oil pipe. One end of the connecting rod is hinged to the mounting portion through the rotating shaft. The other end of the connecting rod is connected to the flanging portion. One end of the tensioning member is connected to the transition portion. The other end of the tensioning member is connected to the side of the connecting rod facing the transition portion.

[0011] In one embodiment, the heating mechanism includes a base, a cantilever, and a heating assembly. The base is disposed outside the conveying mechanism. The cantilever extends along the axial direction of the inner lining oil pipe. One end of the cantilever is mounted on the base. The heating assembly is mounted at the end of the cantilever away from the base. When the inner lining oil pipe is sleeved outside the heating mechanism, the end of the cantilever with the heating assembly mounted thereon extends into the inner lining oil pipe.

[0012] In one embodiment, the heating assembly includes a plurality of arc-shaped heating wires. The plurality of arc-shaped heating wires are arranged in a circumferential array along the cantilever, and the arc of each arc-shaped heating wire is adapted to the arc of the inner lining oil pipe.

[0013] In one embodiment, the conveying mechanism includes a mounting platform, conveying wheels, a second driving member, and two guide rails. The mounting platform and the two guide rails both extend along the circumferential direction of the inner lining oil pipe. The two guide rails are mounted on the mounting platform, and a receiving gap for accommodating the inner lining oil pipe and the conveying wheels is provided between the two guide rails. The conveying wheels are rotatably mounted on the mounting platform. The second driving member is connected to the conveying wheels and is used to drive the conveying wheels to drive the inner lining oil pipe to move between the heating position and the flanging position.

[0014] In one embodiment, the conveying mechanism further includes a clamping seat, a clamping plate, and a third driving member. The clamping seat is mounted on the mounting platform. The clamping seat has an arc-shaped structure with an opening on one side. The inner wall of the clamping seat opposite to the opening has a radian adapted to the inner lining oil pipe. The clamping plate is slidably mounted on the mounting platform along the radial direction of the inner lining oil pipe at a position corresponding to the opening. The clamping seat and the clamping plate are oppositely arranged on both sides of the inner lining oil pipe. The third driving member is connected to the clamping plate and is used to drive the clamping plate to move between an initial position and a clamping position, correspondingly to move the clamping plate away from the clamping seat to release the inner lining oil pipe, or to move the clamping plate closer to the clamping seat to abut against the inner lining oil pipe.

[0015] The present invention also provides a processing method for an inner lining oil pipe, which applies the inner lining oil pipe processing device as described above. The processing method for the inner lining oil pipe includes: Placing the inner lining oil pipe on the conveying mechanism, with the non-coupling end of the inner lining oil pipe facing the heating mechanism; Using the conveying mechanism to move the inner lining oil pipe to the heating position, so that the inner lining oil pipe is sleeved outside the heating mechanism; Using the heating mechanism to heat the non-coupling end of the inner lining oil pipe and maintaining for a preset time; Using the conveying mechanism again to move the inner lining oil pipe from the heating position to the flanging position, so that the flanging mechanism is sleeved outside the inner lining oil pipe; Using the flanging mechanism to perform flanging processing on the non-coupling end of the inner lining oil pipe.

[0016] The technical solution of the present invention replaces the traditional hydraulic flanging technology through the coordinated cooperation of a conveying mechanism, a heating mechanism, and a flanging mechanism. The conveying mechanism extends axially along the inner-lined oil pipe, which can control the movement of the inner-lined oil pipe between the heating position and the flanging position. The heating mechanism is used to perform a non-contact preheating treatment on the non-coupling end of the inner-lined oil pipe, so that the inner pipe body has good plasticity during the flanging process, which helps to improve the flanging quality. Then, the flanging mechanism that moves circumferentially along the inner-lined oil pipe applies a uniform force to the end of the inner pipe body, which can effectively solve the technical problems of difficult pressure control, uneven flanging, and inconsistent wall thickness distribution existing in the traditional hydraulic flanging, thereby ensuring the uniformity of the flanging of the non-coupling end of the inner-lined oil pipe and the consistency of the wall thickness distribution. It improves the flanging quality of the inner-lined oil pipe, enhances the reliability and sealing performance of the connection of the inner-lined oil pipe, and provides a more reliable guarantee for the safe transportation of oil and gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0018] Figure 1 Schematic structural diagram of an embodiment of the inner-lined oil pipe processing device provided by the present invention; Figure 2 Schematic structural diagram of the inner-lined oil pipe of the present invention when it is in the heating position; Figure 3 Schematic structural diagram of the inner-lined oil pipe of the present invention when it is in the flanging position; Figure 4 Schematic structural diagram of an embodiment of the heating mechanism and the flanging mechanism related to the present invention; Figure 5 Schematic structural diagram of an embodiment of the flanging mechanism related to the present invention; Figure 6 Schematic structural diagram of an embodiment of the flanging component related to the present invention; Figure 7 Schematic structural diagram of an embodiment of the conveying mechanism related to the present invention; Figure 8 Schematic flow chart of an embodiment of the inner-lined oil pipe processing method provided by the present invention.

[0019] Explanation of the reference numerals in the drawings: 10. Inner-lined oil pipe; 100, Conveyor mechanism; 200, Heating mechanism; 300, Flanging mechanism; 101, Accommodating gap; 201, Heating position; 301, Flanging position; 110, Installation platform; 120, Conveyor wheel; 130, Second driving member; 140, Guide rail; 150, Clamping seat; 160, Clamping plate; 170, Third driving member; 210, Base; 220, Cantilever; 230, Heating assembly; 231, Arc-shaped electric heating wire; 310, Support seat; 320, Installation ring; 330, Flanging assembly; 340, First driving member; 331, Installation frame; 332, Tensioning member; 333, Flanging member; 334, Connection part; 335, Transition part; 336, Installation part; 337, Connecting rod; 338, Rotating shaft; 339, Flanging part.

[0020] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0023] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present invention, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0024] With the rapid development of the oil and gas industry, lined tubing is often used as a key equipment to ensure the safe transportation of oil and gas. The flanging process of lined tubing is an important process to ensure the reliability and tightness of pipeline connection.

[0025] Currently, the flanging process of lined tubing is mainly realized by hydraulic expansion forming technology. Through a special hydraulic flanging device, the non-coupling end of the lined tubing is placed in the mold, and a uniform pressure is applied to the tube wall of the lined tubing by using a high-pressure liquid medium, so that the tube end gradually expands and deforms along the mold contour, and finally a flanging structure is formed.

[0026] However, the existing hydraulic flanging mechanism has a complex structure, is difficult to debug and maintain, and the pressure is difficult to control during the flanging process, which easily leads to uneven flanging or inconsistent wall thickness distribution of the lined tubing, affecting the connection reliability of the lined tubing.

[0027] To solve this technical problem, the present invention proposes a processing device for lined tubing.

[0028] Please refer to Figure 1 、 Figure 2 and Figure 3 In an embodiment of the present invention, the processing device for lined tubing includes a conveying mechanism 100, a heating mechanism 200 and a flanging mechanism 300. The conveying mechanism 100 extends along the axial direction of the lined tubing 10. One end of the conveying mechanism 100 is provided with a flanging position 301, and a heating position 201 is arranged between the other end of the conveying mechanism 100 and the flanging position 301; the heating mechanism 200 is erected at the heating position 201; the flanging mechanism 300 is arranged at the flanging position 301, and the flanging mechanism 300 extends out of one end of the conveying mechanism 100 in a direction away from the heating mechanism 200; wherein, the lined tubing 10 is placed on the conveying mechanism 100, and the conveying mechanism 100 is used to drive the lined tubing 10 to move between the heating position 201 and the flanging position 301, and correspondingly sleeve the lined tubing 10 outside the heating mechanism 200 or sleeve the flanging mechanism 300 outside the lined tubing 10.

[0029] Specifically, the conveying mechanism 100 is arranged to extend along the axial direction of the lined tubing 10 to form a transportation channel. The front end of the conveying mechanism 100 is provided with a flanging position 301, and a heating position 201 is arranged between the rear end of the conveying mechanism 100 and the flanging position 301. The heating mechanism 200 is erected at the heating position 201, and the flanging mechanism 300 is arranged at the flanging position 301, and a part of the flanging mechanism 300 extends out of the front end of the conveying mechanism 100, so that a part of the flanging mechanism 300 is suspended outside the conveying mechanism 100. The lined tubing 10 is placed on the conveying mechanism 100, and the conveying mechanism 100 drives the lined tubing 10 to move between the heating position 201 and the flanging position 301.

[0030] In the processing of the present invention, first, the lined tubing 10 is placed on the conveying mechanism 100. The conveying mechanism 100 drives the lined tubing 10 as a whole to move towards the heating position 201. When the non-coupling end of the lined tubing 10 reaches the heating position 201, the lined tubing 10 is sleeved outside the heating mechanism 200. At this time, the heating mechanism 200 heats the lined pipe body at the non-coupling end of the lined tubing 10 to soften the material of the lined pipe body, preparing for the subsequent flanging process. After heating is completed, the conveying mechanism 100 drives the lined tubing 10 as a whole to move towards the flanging position 301 again, so that the non-coupling end of the lined tubing 10 reaches the flanging position 301. At this time, the outermost pipe body of the lined tubing 10 is sleeved inside the flanging mechanism 300 and is held and fixed by the flanging mechanism 300. Then, the flanging mechanism 300 is started, and the flanging mechanism 300 moves circumferentially along the lined pipe body of the lined tubing 10. The flanging mechanism 300 contacts and acts on the end of the lined pipe body of the lined tubing 10, and the end of the lined pipe body is folded and deformed by applying force evenly, thereby completing the flanging process of the non-coupling end of the lined tubing 10.

[0031] In the technical solution provided by the present invention, through the coordinated cooperation of the conveying mechanism 100, the heating mechanism 200, and the flanging mechanism 300, the traditional hydraulic flanging technology is replaced. By utilizing the axial extension of the conveying mechanism 100 along the lined tubing 10, the movement of the lined tubing 10 between the heating position 201 and the flanging position 301 can be controlled. Then, by using the heating mechanism 200 to perform non-contact preheating treatment on the non-coupling end of the lined tubing 10, the lined pipe body has good plasticity during the flanging process, which helps to improve the flanging quality. By further using the flanging mechanism 300 that moves circumferentially along the lined tubing 10 to apply a uniform force to the end of the lined pipe body, the technical problems of difficult pressure control, uneven flanging, and inconsistent wall thickness distribution existing in the traditional hydraulic flanging can be effectively solved, thereby ensuring the uniformity of the flanging of the non-coupling end of the lined tubing 10 and the consistency of the wall thickness distribution. The flanging quality of the lined tubing 10 is improved, the reliability and sealing performance of the connection of the lined tubing 10 are enhanced, and a more reliable guarantee is provided for the safe transportation of oil and gas.

[0032] Please continue to refer to Figure 1 , and refer to Figure 4, in an embodiment of the present invention, the flanging mechanism 300 includes a support base 310, a mounting ring 320, a flanging assembly 330, and a first driving member 340. The support base 310 extends vertically and is mounted at the flanging position 301. The mounting ring 320 is rotatably arranged on the support base 310. The support base 310, the mounting ring 320, and the inner lining oil pipe 10 are coaxially arranged. The flanging assembly 330 is detachably mounted on the outer edge of the mounting ring 320. The first driving member 340 is connected to the mounting ring 320 and is used to drive the mounting ring 320 to drive the flanging assembly 330 that contacts and presses against the end of the inner lining oil pipe 10 to move circumferentially along the inner lining oil pipe 10 when the flanging mechanism 300 is sleeved outside the inner lining oil pipe 10.

[0033] It should be noted that a part of the flanging mechanism 300, namely the flanging assembly 330, extends out of the front end of the conveying mechanism 100 so that the flanging assembly 330 is suspended outside the conveying mechanism 100.

[0034] Specifically, the support base 310 extends vertically and is mounted at the flanging position 301 to support the entire flanging mechanism 300. The mounting ring 320 is rotatably arranged on the support base 310, and the support base 310, the mounting ring 320, and the inner lining oil pipe 10 are coaxially arranged to ensure that the flanging assembly 330 can move uniformly circumferentially along the inner lining oil pipe 10. The flanging assembly 330 is detachably mounted on the outer edge of the mounting ring 320, which is convenient for replacing the suitable flanging assembly 330 according to different specifications of the inner lining oil pipe 10. The first driving member 340 is connected to the mounting ring 320. When the flanging mechanism 300 is sleeved outside the inner lining oil pipe 10, the first driving member 340 can drive the mounting ring 320 to rotate, driving the flanging assembly 330 that contacts and presses against the end of the inner lining oil pipe 10 to move circumferentially along the inner lining oil pipe 10, realizing uniform flanging of the inner lining pipe body.

[0035] The mounting ring 320 is sleeved inside the support ring and is slidably connected to the support ring, enabling the mounting ring 320 to rotate inside the support ring. When the end of the outermost pipe body of the inner lining oil pipe 10 contacts the limit protrusion of the support base 310, the first driving member 340 drives the mounting ring 320 to rotate around its axis, causing the flanging assembly 330 circumferentially mounted on the mounting ring 320 to rotate around the circumference of the non-coupling end of the inner lining pipe body. At this time, the flanging assembly 330 contacts the inner lining pipe body heated by the heating mechanism 200 and applies uniform pressure to the inner lining pipe body, causing the inner lining pipe body to be pressed to form a flanging. The flanging mechanism 300 can perform 360-degree uniform flanging processing on the inner lining pipe body of the inner lining oil pipe 10, avoiding the problem of uneven flanging caused by uneven pressure in traditional hydraulic flanging. At the same time, the detachable flanging assembly 330 increases the adaptability of the device, can cope with inner lining oil pipes 10 of different specifications and materials, and improves the versatility of the device.

[0036] In practical applications, after the lined tubing 10 is heated by the heating mechanism 200, the conveying mechanism 100 sends the lined tubing 10 to the flanging position 301. The end of the outermost tube body of the lined tubing 10 contacts the limiting protrusion of the support seat 310, and at this time, the lined tubing 10 stops moving. Then, the first driving member 340 is activated to drive the mounting ring 320 to rotate, driving the flanging assembly 330 to move uniformly along the circumferential direction of the lined tubing 10. The flanging assembly 330 contacts the end of the lined tube body and applies pressure. Since the lined tube body has been heated and softened, under the action of the flanging assembly 330, the end of the lined tube body gradually folds outward along the radial direction of the lined tubing 10, forming a uniform flanging structure. After flanging is completed, the lined tubing 10 can be removed from the flanging position 301, completing the flanging process of the lined tubing 10.

[0037] As an alternative embodiment, the support seat 310 includes a support ring and two support blocks. The two support blocks are arranged at intervals in the width direction of the conveying mechanism 100 to form a stable support structure. The support ring is mounted on the flanging position 301 through the two support blocks, so that the support ring is at an appropriate height corresponding to the lined tubing 10 on the conveying mechanism 100. A limiting protrusion is formed on the inner wall of the support ring, and this limiting protrusion is used to contact the end of the outermost tube body of the lined tubing 10, playing a role of positioning and limiting, avoiding the lined tubing 10 from continuing to move outside the conveying mechanism 100 after reaching the flanging position 301, and ensuring that the lined tubing 10 maintains a stable position during the flanging process.

[0038] As another alternative embodiment, in order to further improve the flanging consistency of the flanging assembly 330 for the non-coupling end of the lined tubing 10, the number of the flanging assemblies 330 is multiple, and the multiple flanging assemblies 330 are arranged in a circumferential annular array along the mounting ring 320.

[0039] Please continue to refer to Figure 4 and refer to Figure 5 , in the embodiment of the present invention, the flanging assembly 330 includes a mounting frame 331, a tensioning member 332 and a flanging member 333. The mounting frame 331 extends along the axial direction of the lined tubing 10, the mounting frame 331 is detachably mounted on the mounting ring 320, the flanging member 333 is arranged on one side of the mounting ring 320, the flanging member 333 is hinged to the end of the mounting frame 331 away from the mounting ring 320, the tensioning member 332 extends along the radial direction of the lined tubing 10, the tensioning member 332 is arranged between the mounting frame 331 and the flanging member 333, and the tensioning member 332 is used to tension the flanging member 333 from the outside of the lined tubing 10 towards the inside of the lined tubing 10.

[0040] Specifically, the mounting bracket 331 extends along the axial direction of the lined tubing 10 and is detachably mounted on the mounting ring 320, facilitating the replacement of the flanging assembly 330 adapted to the flanging process of the current lined tubing 10 according to different specifications of the lined tubing 10. The flanging member 333 is disposed on one side of the mounting ring 320 and is hinged to the end of the mounting bracket 331 away from the mounting ring 320, enabling the flanging member 333 to have a certain degree of freedom of movement and adapt to the shape change of the end of the lined pipe body. The tensioning member 332 extends along the radial direction of the lined tubing 10 and is disposed between the mounting bracket 331 and the flanging member 333, and is used to tension the flanging member 333 from the outside of the lined tubing 10 towards the inside of the lined tubing 10 to ensure that the flanging member 333 remains in close contact with the end of the lined pipe body.

[0041] During the processing of the lined tubing 10, when the lined tubing 10 is heated by the heating mechanism 200, the conveying mechanism 100 sends the lined tubing 10 to the flanging position 301. The end of the outermost pipe body of the lined tubing 10 contacts the limiting protrusion of the support seat 310, and at this time, the lined tubing 10 stops moving. Then, the first driving member 340 is activated to drive the mounting ring 320 to rotate, driving the mounting bracket 331 and the flanging member 333 to move uniformly along the circumferential direction of the lined tubing 10. When the non-coupling end of the lined pipe body first contacts the flanging member 333, it will extrude the flanging member 333 outwards along the axial direction of the lined tubing 10. At this time, due to the elasticity of the tensioning member 332, the tensioning member 332 enables the flanging member 333 to maintain close contact with the non-coupling end of the lined pipe body when rotating along the circumferential direction of the non-coupling end of the lined pipe body, thereby improving the flanging processing quality of the non-coupling end of the lined pipe body.

[0042] The tensioning member 332 solves the problem that the flanging tool is not in close contact with the lined pipe body in the traditional flanging process. During the flanging process, due to the possible slight differences in the shape and size of the end of the lined pipe body, if the flanging tool is fixed, it is easy to cause uneven flanging or unstable flanging quality. However, the tensioning member 332 in this embodiment can adaptively adjust the contact pressure between the flanging member 333 and the lined pipe body according to the actual situation of the end of the lined pipe body, ensuring that the flanging member 333 always maintains an appropriate contact force with the lined pipe body and achieving a uniform and consistent flanging effect.

[0043] In addition, the flanging member 333 is hinged to the end of the mounting bracket 331 away from the mounting ring 320, enabling the flanging member 333 to have a certain angle adjustment ability and being able to adaptively adjust its working angle according to the shape change of the end of the lined pipe body, further improving the adaptability and quality stability of flanging. When the flanging member 333 contacts the end of the lined pipe body under the action of the tensioning member 332, the flanging member 333 can adaptively adjust its position and angle according to the actual shape of the end of the lined pipe body to ensure that the acting direction and magnitude of the flanging force are always in the best state.

[0044] It should be understood that the axis of the flanging member 333 is set at an angle with the axis of the lining oil pipe 10, and the angle between the axis of the flanging member 333 and the axis of the lining oil pipe 10 is α, 12°≤α≤60°.

[0045] Please continue to refer to Figure 5 , and refer to Figure 6 In an embodiment of the present invention, the mounting frame 331 includes a connecting portion 334, a transition portion 335 and a mounting portion 336. The connecting portion 334 is detachably mounted on the mounting ring 320. The mounting portion 336 extends out from the side of the mounting ring 320 away from the heating mechanism 200. The mounting portion 336 is transitionally connected to the connecting portion 334 through the transition portion 335. The flange member 333 is hinged to the mounting portion 336.

[0046] Specifically, the connecting portion 334 is detachably mounted on the mounting ring 320, so as to facilitate disassembly and replacement as needed. The mounting portion 336 extends out of the side of the mounting ring 320 away from the heating mechanism 200, that is, the mounting portion 336 is located outside the mounting ring 320, so that the flange member 333 can be located in an appropriate position to contact the end of the liner pipe body. The mounting portion 336 is transitionally connected to the connecting portion 334 through the transition portion 335 to form an integral structure. The flange member 333 is hinged to the mounting portion 336, so that the flange member 333 has a certain degree of freedom of movement.

[0047] This segmented mounting frame 331 structure enables the flanged part 333 to extend out of one side of the mounting ring 320, ensuring that the flanged part 333 can better contact the end of the liner pipe body. After the liner oil pipe 10 is heated by the heating mechanism 200, the conveying mechanism 100 delivers the liner oil pipe 10 to the flanged position 301, and the outermost tube end of the liner oil pipe 10 contacts the limiting protrusion of the support seat 310, and the liner oil pipe 10 stops moving. At this time, the flanged part 333 extends out of the side of the mounting ring 320 away from the heating mechanism 200 through the mounting portion 336, and is just located outside the end of the liner pipe body.

[0048] During the flanging process, the first driving member 340 drives the mounting ring 320 to rotate, and the mounting ring 320 drives the flanging member 333 on the mounting frame 331 to move along the circumferential direction of the liner tube body. Since the flanging member 333 is hinged to the mounting portion 336, when the flanging member 333 contacts the end of the liner tube body, the flanging member 333 can automatically adjust its angle according to the shape of the end of the liner tube body. The tensioning member 332 keeps the flanging member 333 in close contact with the end of the liner tube body to ensure uniform application of the flanging force.

[0049] In addition, during actual operation, the angle between the flanging piece 333 and the lining oil pipe 10 can be adjusted by adjusting the length of the connecting portion 334, the transition portion 335 and / or the mounting portion 336, thereby further improving the consistency of the flanging processing of the non-coupling end of the lining oil pipe 10 by the flanging piece 333.

[0050] Please continue to refer to Figure 6 In an embodiment of the present invention, the flange member 333 includes a connecting rod 337, a rotating shaft 338 and a flange portion 339. The rotating shaft 338 extends radially along the lining oil pipe 10. One end of the connecting rod 337 is hinged to the mounting portion 336 through the rotating shaft 338. The other end of the connecting rod 337 is connected to the flange portion 339. One end of the tensioning member 332 is connected to the transition portion 335. The other end of the tensioning member 332 is connected to the side of the connecting rod 337 toward the transition portion 335.

[0051] Specifically, the rotating shaft 338 is arranged to extend radially along the liner oil pipe 10, and one end of the connecting rod 337 is hinged to the mounting portion 336 through the rotating shaft 338, so that the connecting rod 337 can rotate around the rotating shaft 338 and has a certain degree of freedom of movement. The other end of the connecting rod 337 is connected to the flange portion 339, which is a working part that actually contacts and acts on the end of the liner pipe body. One end of the tensioning member 332 is connected to the transition portion 335 of the mounting frame 331, and the other end is connected to the side of the connecting rod 337 facing the transition portion 335, forming a tensioning structure, so that the flange portion 339 can maintain close contact with the end of the liner pipe body.

[0052] This three-stage flanging member 333 structure cooperates with the three-stage structure of the aforementioned mounting frame 331 to form a flexible and stable flanging mechanism 300. During the processing of the liner oil pipe 10, when the liner oil pipe 10 reaches the flanging position 301, the first driving member 340 drives the mounting ring 320 to rotate, and the mounting ring 320 drives the mounting frame 331 and the flanging member 333 to move along the circumferential direction of the liner oil pipe 10. Since the connecting rod 337 in the flanging member 333 is hinged to the mounting portion 336 through the rotating shaft 338, when the flanging portion 339 contacts the end of the liner pipe body, the connecting rod 337 can rotate around the rotating shaft 338, so that the flanging portion 339 can automatically adjust its angle and position according to the shape of the end of the liner pipe body.

[0053] Meanwhile, one end of the tension member 332 is connected to the transition portion 335, and the other end is connected to the side of the connecting rod 337 facing the transition portion 335, forming an elastic tension structure. This structure ensures that during the flanging process, even if there are slight differences in the shape and size of the end of the inner liner tube body, the flanging portion 339 can always maintain close contact with the end of the inner liner tube body. When the end of the inner liner tube body applies pressure to the flanging portion 339, the connecting rod 337 rotates around the rotating shaft 338, but the tension member 332 generates a reverse tension force, causing the flanging portion 339 to always apply pressure towards the end of the inner liner tube body, ensuring the consistency of the flanging effect.

[0054] The rotating shaft 338 is arranged to extend radially along the inner lining oil pipe 10. This arrangement makes the rotation plane of the connecting rod 337 parallel to the axial direction of the inner lining oil pipe 10, so that the moving direction of the flanging portion 339 is mainly along the axial direction of the inner lining oil pipe 10. It ensures that the acting direction of the flanging force is mainly along the axial direction of the end of the inner liner tube body, rather than the radial direction, avoiding possible radial deformation during the flanging process and improving the accuracy and quality of the flanging.

[0055] As the working component that actually contacts and acts on the end of the inner liner tube body, the shape and material of the flanging portion 339 have a direct impact on the flanging effect. The flanging portion 339 can be selected with different shapes and materials according to the material of the inner liner tube body and the flanging requirements, such as arc-shaped, inclined-plane-shaped or stepped-shaped, etc., to adapt to different flanging needs. The flanging portion 339 is usually made of wear-resistant and high-strength materials to ensure that it can still maintain a good working state after long-term use.

[0056] This structure of the flanging member 333 composed of the connecting rod 337, the rotating shaft 338 and the flanging portion 339, combined with the elastic tension effect of the tension member 332, solves the problems of unstable contact between the flanging tool and the inner liner tube body and inaccurate control of the flanging force in the traditional flanging process. The connecting rod 337 is hinged to the mounting portion 336 through the rotating shaft 338, increasing the flexibility of the flanging process, enabling the flanging portion 339 to adaptively adjust its position and angle according to the actual situation of the end of the inner liner tube body. The tension member 332 ensures the close contact between the flanging portion 339 and the end of the inner liner tube body, ensuring the uniform application of the flanging force.

[0057] Please continue to refer to Figure 1 and Figure 4 , in the embodiment of the present invention, the heating mechanism 200 includes a base 210, a cantilever 220 and a heating component 230. The base 210 is arranged outside the conveying mechanism 100. The cantilever 220 extends along the axial direction of the inner lining oil pipe 10. One end of the cantilever 220 is mounted on the base 210, and the heating component 230 is mounted on the end of the cantilever 220 away from the base 210. When the inner lining oil pipe 10 is sleeved outside the heating mechanism 200, the end of the cantilever 220 with the heating component 230 installed extends into the inner lining oil pipe 10.

[0058] Specifically, the base 210 is arranged outside the conveying mechanism 100 to provide stable support for the entire heating mechanism 200. The cantilever 220 extends along the axial direction of the lining oil pipe 10, and one end of the cantilever 220 is installed on the base 210 to form a cantilever structure. The heating component 230 is installed at one end of the cantilever 220 away from the base 210, that is, the free end of the cantilever 220. When the lining oil pipe 10 is sleeved outside the heating mechanism 200, one end of the cantilever 220 on which the heating component 230 is installed extends into the lining oil pipe 10, so that the heating component 230 can directly heat the inner side of the lining pipe body.

[0059] This internal heating method has obvious advantages over the traditional external heating method. The traditional external heating method mainly heats the outer surface of the inner lining pipe 10. The heat needs to be transferred to the inner lining pipe body through the pipe wall, which has low heating efficiency and easily leads to uneven heating. The heating mechanism 200 of the present invention extends the heating component 230 into the inner lining pipe 10 through the cantilever 220, directly heats the inner side of the inner lining pipe body, and the heat directly acts on the inner lining pipe body, which has high heating efficiency and more uniform heating.

[0060] The arrangement of the base 210 outside the conveying mechanism 100 makes the heating mechanism 200 and the conveying mechanism 100 form an independent but coordinated system. This arrangement not only reduces the interference of the heating mechanism 200 on the conveying mechanism 100, but also facilitates the installation, adjustment and maintenance of the heating mechanism 200. The height and position of the base 210 can be adjusted as needed to adapt to lined oil pipes 10 of different specifications.

[0061] The cantilever 220 extends along the axial direction of the liner oil pipe 10, ensuring that the heating assembly 230 can be accurately positioned inside the non-coupling end of the liner pipe body. The length of the cantilever 220 can be adjusted according to the length of the liner oil pipe 10 and the heating requirements to ensure that the heating assembly 230 can reach the optimal heating position 201. The cantilever 220 is usually made of high temperature resistant and high strength materials to ensure that it can maintain a stable structure and performance in a high temperature environment.

[0062] The heating assembly 230 is installed at one end of the cantilever 220 away from the base 210, that is, the free end of the cantilever 220, so that the heating assembly 230 can more flexibly adapt to the change of the inner diameter of the lining oil pipe 10. The heating assembly 230 can be an electric heating wire, an induction heating coil or an infrared heating element, etc., and an appropriate heating method is selected according to the material of the lining pipe body and the heating requirements. The heating assembly 230 is usually equipped with a temperature sensor and a temperature control system to monitor and control the heating temperature in real time to ensure the consistency of the heating effect.

[0063] When the inner-lined oil pipe 10 is sleeved outside the heating mechanism 200, one end of the cantilever 220 where the heating component 230 is installed extends into the inner-lined oil pipe 10, and the heating component 230 directly heats the inner side of the non-coupling end of the inner-lined pipe body. The inner-lined pipe body is evenly heated to the temperature required for flanging, providing conditions for subsequent flanging processing. After heating is completed, the conveying mechanism 100 sends the inner-lined oil pipe 10 to the flanging position 301, and the flanging mechanism 300 completes the flanging processing.

[0064] Please continue to refer to Figure 4 , in the embodiment of the present invention, the heating component 230 includes a plurality of arc-shaped heating wires 231. The plurality of arc-shaped heating wires 231 are arranged in a circumferential array along the cantilever 220, and the arc of each arc-shaped heating wire 231 is adapted to the arc of the inner-lined oil pipe 10.

[0065] Specifically, the plurality of arc-shaped heating wires 231 are arranged in a circumferential array along the cantilever 220 to form an annular heating area. The arc of each arc-shaped heating wire 231 is adapted to the inner wall arc of the inner-lined oil pipe 10 to ensure that the heating component 230 can uniformly heat the inner-lined pipe body.

[0066] When the cantilever 220 of the heating mechanism 200 extends into the inner-lined oil pipe 10, the arc-shaped heating wire 231 is exactly located inside the non-coupling end of the inner-lined pipe body. Since the arc of the arc-shaped heating wire 231 is adapted to the inner wall arc of the inner-lined oil pipe 10, an appropriate distance is maintained between the arc-shaped heating wire 231 and the inner wall of the inner-lined pipe body, which can not only ensure the heating efficiency but also avoid damage caused by direct contact. The plurality of arc-shaped heating wires 231 are arranged in a circumferential array along the cantilever 220 to form a complete annular heating area, enabling the inner-lined pipe body to be uniformly heated in the circumferential direction and avoiding problems such as local overheating or insufficient heating. It has obvious advantages compared with traditional linear or spiral heating wires. When traditional linear or spiral heating wires are used for heating in a circular pipe, uniform heating is often impossible to achieve, easily resulting in uneven temperature distribution on the pipe wall. However, the arc-shaped heating wire 231 adopted in the present invention has an arc adapted to the inner wall arc of the inner-lined oil pipe 10, enabling the heat generated by the heating wire to be more evenly transmitted to each part of the inner-lined pipe body, improving the heating uniformity.

[0067] The number of arc-shaped heating wires 231 can be adjusted according to the diameter of the inner-lined oil pipe 10 and the heating requirements. Generally, the more the number of arc-shaped heating wires 231, the more uniform the heating, but at the same time, it will increase the complexity of the structure and cost. In practical applications, according to the specifications of the inner-lined oil pipe 10 and the flanging requirements, an appropriate number of arc-shaped heating wires 231 can be selected to simplify the structure and reduce the cost while ensuring the heating uniformity.

[0068] The power and temperature of the arc-shaped heating wire 231 can be precisely controlled by a control system in related technologies. The control system can automatically adjust the power and working time of the heating wire according to the material, thickness, and flanging requirements of the inner liner tube body to ensure that the inner liner tube body is heated to an appropriate temperature. At the same time, the control system can also monitor the working state and temperature of the heating wire, promptly detect and handle abnormal situations, and improve the safety and reliability of the heating process.

[0069] During the actual heating process, when the inner liner oil pipe 10 is sleeved outside the heating mechanism 200, the cantilever 220 extends into the inner liner oil pipe 10, and the arc-shaped heating wire 231 is located inside the non-coupling end of the inner liner tube body. The control system starts the heating wire, and the arc-shaped heating wire 231 generates heat to uniformly heat the inner liner tube body. Since an appropriate distance is maintained between the arc-shaped heating wire 231 and the inner wall of the inner liner tube body, the heat is mainly transferred to the inner liner tube body through radiation and convection, avoiding local overheating that may be caused by direct contact. Multiple arc-shaped heating wires 231 work simultaneously to form an annular heating area, enabling the inner liner tube body to be uniformly heated in the circumferential direction.

[0070] Please continue to refer to Figure 1 , and refer to Figure 7 , in the embodiment of the present invention, the conveying mechanism 100 includes a mounting platform 110, conveying wheels 120, a second driving member 130, and two guide rails 140. The mounting platform 110 and the two guide rails 140 both extend along the circumferential direction of the inner liner oil pipe 10. The two guide rails 140 are mounted on the mounting platform 110. A receiving gap 101 for accommodating the inner liner oil pipe 10 and the conveying wheels 120 is provided between the two guide rails 140. The conveying wheels 120 are rotatably mounted on the mounting platform 110. The second driving member 130 is connected to the conveying wheels 120 and is used to drive the conveying wheels 120 to drive the inner liner oil pipe 10 to move between the heating position 201 and the flanging position 301.

[0071] Specifically, the installation platform 110 and the two guide rails 140 both extend circumferentially along the inner-lined oil pipe 10, forming a stable support and guiding system. The two guide rails 140 are installed on the installation platform 110, and an accommodation gap 101 for accommodating the inner-lined oil pipe 10 and the conveying wheel 120 is provided between the guide rails 140, ensuring that the inner-lined oil pipe 10 can move stably under the constraint of the guide rails 140. The conveying wheel 120 is rotatably installed on the installation platform 110, contacts the inner-lined oil pipe 10, and is used to drive the outermost pipe body in the inner-lined oil pipe 10 to drive the entire inner-lined oil pipe 10 to move. The second driving member 130 is connected to the conveying wheel 120 to provide driving force, enabling the conveying wheel 120 to drive the inner-lined oil pipe 10 to move between the heating position 201 and the flanging position 301. The conveying mechanism 100 with this structure cooperates with the aforementioned heating mechanism 200 and flanging mechanism 300 to jointly complete the flanging process of the inner-lined oil pipe 10. The installation platform 110 serves as the basis for the entire conveying mechanism 100 and provides stable support. The length of the installation platform 110 is determined according to the processing requirements of the inner-lined oil pipe 10, and it should ensure that the entire distance from the heating position 201 to the flanging position 301 can be covered.

[0072] The two guide rails 140 are installed on the installation platform 110, and the guide rails 140 extend circumferentially along the inner-lined oil pipe 10, forming a guiding channel. The distance between the guide rails 140, namely the accommodation gap 101, can not only accommodate the inner-lined oil pipe 10 and the conveying wheel 120, but also play a good constraining role on the inner-lined oil pipe 10, preventing the inner-lined oil pipe 10 from shifting or rotating during the movement. The guide rails 140 are usually made of wear-resistant and low-friction materials to reduce the resistance when the inner-lined oil pipe 10 moves and improve the conveying efficiency.

[0073] The conveying wheel 120 is rotatably installed on the installation platform 110, located within the accommodation gap 101 between the two guide rails 140, and contacts the outer surface of the inner-lined oil pipe 10. The number of conveying wheels 120 can be set to multiple according to needs, distributed on the movement path of the inner-lined oil pipe 10, ensuring that the inner-lined oil pipe 10 can move smoothly. The outer surface of the conveying wheel 120 is usually coated with an elastic material to increase the friction with the inner-lined oil pipe 10 and avoid damaging the surface of the inner-lined oil pipe 10.

[0074] The second driving member 130 is connected to the conveying wheel 120 to provide driving force for the conveying wheel 120. The second driving member 130 can be a motor, a cylinder, a hydraulic cylinder, etc., and an appropriate driving method is selected according to the weight and movement speed requirements of the inner-lined oil pipe 10. The second driving member 130 is usually equipped with a speed control system, which can accurately control the rotation speed of the conveying wheel 120, thereby controlling the movement speed and position of the inner-lined oil pipe 10, ensuring that the inner-lined oil pipe 10 can accurately stop at the heating position 201 and the flanging position 301.

[0075] During the processing of the lined tubing 10, first place the lined tubing 10 in the accommodation gap 101 between the two guide rails 140, and the bottom of the lined tubing 10 contacts the conveying wheel 120. Start the second driving member 130 to drive the conveying wheel 120 to rotate. The conveying wheel 120 drives the lined tubing 10 to move along the guide rail 140 through friction. When the lined tubing 10 reaches the heating position 201, the second driving member 130 stops operating, and the lined tubing 10 stays at the heating position 201, sleeved outside the heating mechanism 200, and the non-coupling end of the lined pipe body is heated by the heating mechanism 200. After the heating is completed, the second driving member 130 is started again to drive the conveying wheel 120 to drive the lined tubing 10 to move to the flanging position 301, and the flanging process is completed by the flanging mechanism 300. Through the restraint of the guide rail 140 and the drive of the conveying wheel 120, the stability and movement accuracy of the lined tubing 10 during the processing are ensured, providing a guarantee for the smooth progress of the heating and flanging processes.

[0076] Please continue to refer to Figures 1 to 3 In the embodiment of the present invention, the conveying mechanism 100 further includes a clamping seat 150, a clamping plate 160, and a third driving member 170. The clamping seat 150 is installed on the installation platform 110. The clamping seat 150 has an arc-shaped structure with an opening on one side. The inner wall of the clamping seat 150 opposite to the opening has a radian adapted to the lined tubing 10. The clamping plate 160 is slidably installed on the installation platform 110 along the radial direction of the lined tubing 10 at a position corresponding to the opening. The clamping seat 150 and the clamping plate 160 are oppositely arranged on both sides of the lined tubing 10. The third driving member 170 is connected to the clamping plate 160 and is used to drive the clamping plate 160 to move between an initial position and a clamping position, correspondingly causing the clamping plate 160 to move away from the clamping seat 150 and release the lined tubing 10, or causing the clamping plate 160 to approach the clamping seat 150 and abut against the lined tubing 10.

[0077] Specifically, the clamping seat 150 is installed on the installation platform 110, having an arc-shaped structure with an opening on one side. The inner wall of the clamping seat 150 opposite to the opening has a radian adapted to the lined tubing 10, and can fit the outer surface of the lined tubing 10. The clamping plate 160 is slidably installed on the installation platform 110 along the radial direction of the lined tubing 10 at a position corresponding to the opening. The clamping seat 150 and the clamping plate 160 are oppositely arranged on both sides of the lined tubing 10, forming an adjustable clamping structure. The third driving member 170 is connected to the clamping plate 160 and is used to drive the clamping plate 160 to move between an initial position and a clamping position, thereby realizing the clamping and release of the lined tubing 10.

[0078] The setting of this clamping structure solves the problem that the inner-lined oil pipe 10 may be displaced or rotated during the conveying process. During the flanging process of the inner-lined oil pipe 10, the inner-lined oil pipe 10 needs to be accurately positioned at the flanging position 301 to ensure the accuracy of heating and flanging. Without a reliable clamping device, the inner-lined oil pipe 10 may be displaced or rotated during the flanging process, affecting the flanging processing accuracy.

[0079] The clamping seat 150 is in an arc-shaped structure with an opening on one side. This design enables the clamping seat 150 to partially surround the inner-lined oil pipe 10, providing a larger contact area and more stable support. The inner wall of the clamping seat 150 opposite to the opening has a radian adapted to the inner-lined oil pipe 10, increasing the contact area between the clamping seat 150 and the inner-lined oil pipe 10 and avoiding deformation or damage to the inner-lined oil pipe 10 that may be caused by point contact. A flexible buffer pad is provided on the inner wall of the clamping seat 150, and its radian can be adjusted or replaced according to different specifications of the inner-lined oil pipe 10 to adapt to inner-lined oil pipes 10 with different diameters.

[0080] The clamping plate 160 is slidably mounted on the mounting platform 110 along the radial direction of the inner-lined oil pipe 10 at the position corresponding to the opening, enabling the clamping plate 160 to move radially and adjust the distance from the clamping seat 150, so as to adapt to inner-lined oil pipes 10 with different diameters. The clamping plate 160 usually has an inner surface with the same radian as the inner wall of the clamping seat 150 to increase the contact area with the inner-lined oil pipe 10 and improve the stability of clamping.

[0081] The clamping seat 150 and the clamping plate 160 are oppositely arranged on both sides of the inner-lined oil pipe 10 to form a clamping space. When the clamping plate 160 approaches the clamping seat 150 under the drive of the third driving member 170, the inner-lined oil pipe 10 is clamped between the clamping seat 150 and the clamping plate 160 and fixed on the conveying mechanism 100. When it is necessary to release the inner-lined oil pipe 10, the third driving member 170 drives the clamping plate 160 away from the clamping seat 150, and the inner-lined oil pipe 10 can be released.

[0082] The third driving member 170 can be a cylinder, a hydraulic cylinder or an electric push rod, etc., which can provide sufficient driving force to move the clamping plate 160 between the initial position and the clamping position. The stroke and speed of the third driving member 170 can be adjusted according to the diameter of the inner-lined oil pipe 10 and the operation requirements to ensure the smoothness and reliability of the clamping process.

[0083] In practical applications, after the lined tubing 10 is placed on the conveying mechanism 100, the third driving member 170 drives the clamping plate 160 to move from the initial position to the clamping position, so that the clamping plate 160 approaches the clamping seat 150 and abuts against the lined tubing 10, clamping the lined tubing 10 between the clamping seat 150 and the clamping plate 160. At this time, there is no need to worry about the displacement or rotation of the lined tubing 10 during the flanging process. After the flanging process of the lined tubing 10 is completed, the third driving member 170 drives the clamping plate 160 to return from the clamping position to the initial position, so that the clamping plate 160 moves away from the clamping seat 150, releasing the lined tubing 10, which is convenient for taking out the processed lined tubing 10.

[0084] It should be understood that a flexible buffer pad is also provided on the side of the clamping plate 160 facing the clamping seat 150.

[0085] Please continue to refer to Figures 1 to 7 and refer to Figure 8 The present invention also provides a method for processing a lined tubing, which uses the above-mentioned lined tubing processing device. The method for processing a lined tubing includes: Step S10: Place the lined tubing 10 on the conveying mechanism 100, so that the non-coupling end of the lined tubing 10 faces the heating mechanism 200; Step S20: Use the conveying mechanism 100 to move the lined tubing 10 to the heating position 201, so that the lined tubing 10 is sleeved outside the heating mechanism 200; Step S30: Use the heating mechanism 200 to heat the non-coupling end of the lined tubing 10 and continue for a preset time; Step S40: Use the conveying mechanism 100 again to move the lined tubing 10 from the heating position 201 to the flanging position 301, so that the flanging mechanism 300 is sleeved outside the lined tubing 10; Step S50: Use the flanging mechanism 300 to perform flanging processing on the non-coupling end of the lined tubing 10.

[0086] Specifically, in step S10, an operator places the lined tubing 10 to be processed on the conveying mechanism 100 and positions it. During the placement process, it is necessary to ensure that the axis of the lined tubing 10 is consistent with the axis of the conveying mechanism 100 to avoid deviation during subsequent movement. The lined tubing 10 should be placed stably, with its non-coupling end facing one side of the heating mechanism 200 and the coupling end facing the other end of the conveying mechanism 100. According to the specifications and dimensions of the lined tubing 10, the positioning device on the conveying mechanism 100 can be adjusted to ensure that the lined tubing 10 can be stably placed on the conveying mechanism 100. For lined tubing 10 with different diameters, the width and height of the conveying mechanism 100 can be adjusted to adapt to lined tubing 10 of different sizes.

[0087] In step S20, start the drive assembly of the conveying mechanism 100 to drive the conveying platform to move the lined tubing 10 axially to the heating position 201. The moving speed should be stable and controllable, generally recommended to be 10 - 20 cm / s, to ensure that the lined tubing 10 will not be displaced or slipped due to inertia. When the non-coupling end of the lined tubing 10 reaches the heating position 201, the conveying mechanism 100 stops moving, and the lined tubing 10 is sleeved outside the heating mechanism 200. At this time, one end of the cantilever 220 of the heating mechanism 200 where the heating component 230 is installed extends into the lined tubing 10 and is accurately positioned inside the non-coupling end of the lined pipe body, preparing for the subsequent heating step.

[0088] In step S30, the purpose of this step is to heat the non-coupling end of the lined tubing 10 to an appropriate temperature to soften the lined pipe body and create conditions for the subsequent flanging process. The setting of the heating temperature and time is very crucial. The following provides the heating parameters for two typical materials of the lined tubing 10: For heating the HDPE lined tubing 10, the heating temperature is set to 120 - 140 °C, the heating time is set to 5 - 8 minutes, the heating power is set to 2000 - 2500 W, and the temperature control accuracy is ±5 °C.

[0089] For heating the PTFE lined tubing 10, the heating temperature is set to 250 - 280 °C, the heating time is set to 3 - 5 minutes, the heating power is set to 3000 - 3500 W, and the temperature control accuracy is ±8 °C.

[0090] During the heating process, the heating component 230 should evenly heat the non-coupling end of the lined pipe body to ensure uniform temperature distribution. The temperature sensor of the heating component 230 monitors the heating temperature in real time, and the temperature control system automatically adjusts the heating power according to the set value to ensure the stability of the heating temperature. After heating is completed, the non-coupling end of the lined pipe body reaches a softened state, and at this time, the ductility and plasticity of the material are enhanced, creating good conditions for the flanging process.

[0091] In step S40, after heating is completed, start the drive assembly of the conveying mechanism 100 again to move the lined tubing 10 from the heating position 201 to the flanging position 301. At this time, it is necessary to control the moving speed, generally recommended to be 5 - 10 cm / s, and the speed should not be too fast to avoid the softened effect of the heated lined pipe body being lost due to temperature reduction. At the same time, rotation or deviation of the lined tubing 10 should be avoided during the movement to ensure that the non-coupling end of the lined pipe body can accurately reach the flanging position 301.

[0092] After the non-coupling end of the lined tubing 10 reaches the flanging position 301, the end of the outermost tube body of the lined tubing 10 contacts the limit protrusion of the support seat 310. At this time, the conveying mechanism 100 stops moving, and the flanging mechanism 300 is sleeved outside the lined tubing 10. At this time, the flanging assembly 330 is located outside the non-coupling end of the lined tube body and is ready for flanging processing.

[0093] In step S50, the first driving member 340 of the flanging mechanism 300 is started to make the mounting ring 320 rotate around its axis, driving the mounting frame 331 and the flanging member 333 to move uniformly along the circumferential direction of the non-coupling end of the lined tube body. The flanging member 333 contacts the end of the lined tube body. Since the lined tube body has been heated and softened, under the action of the flanging member 333, the end of the lined tube body gradually turns outward to form a uniform flanging structure.

[0094] During the flanging process, the moving speed of the flanging member 333 should be stable and controllable, generally recommended to be 30~60 degrees / second, that is, it takes 6 to 12 seconds to complete one circle. The flanging force should also be moderate, which can not only ensure the flanging effect but also prevent excessive deformation or damage to the material of the lined tube body. Since the flanging member 333 is hinged to the mounting portion 336 through the rotating shaft 338 and is affected by the tension member 332, it can adapt to the shape change of the end of the lined tube body, maintain close contact with the end of the lined tube body, and ensure the consistency of the flanging quality.

[0095] After the flanging is completed, the flanging quality can be visually inspected, including the uniformity, flatness and tightness of the flanging. The qualified flanging should have a uniform shape, no obvious cracks, wrinkles or deformations, and can form a tight fit with the coupling end.

[0096] In summary, the lined tubing processing method provided by the present invention solves the problems existing in the traditional hydraulic flanging technology, such as complex structure, difficult debugging and maintenance, and unstable pressure control, improves the quality and efficiency of the flanging of the lined tubing 10, provides a strong guarantee for the connection reliability and sealing performance of the lined tubing 10, and has important significance for ensuring the safe transportation of oil and gas.

[0097] It should be understood that this lined tubing processing method is applied to the lined tubing processing device as described above. The specific structure of the lined tubing processing device refers to the above-mentioned embodiments. Since this lined tubing processing method adopts all the technical solutions of the above-mentioned all embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, and will not be elaborated here one by one.

[0098] The above description is only an exemplary embodiment of the present invention and does not limit the protection scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied to other related technical fields, is included in the protection scope of the present invention.

Claims

1. An inner-lined tubing processing device, characterized in that Comprising: A conveying mechanism, the conveying mechanism extending along the axial direction of the inner lining oil pipe, one end of the conveying mechanism being provided with a flanging position, and a heating position being provided between the other end of the conveying mechanism and the flanging position; A heating mechanism, the heating mechanism being erected at the heating position; A flanging mechanism, the flanging mechanism being arranged at the flanging position, and the flanging mechanism extending out of one end of the conveying mechanism from the flanging position in a direction away from the heating mechanism; Wherein, the inner lining oil pipe is placed on the conveying mechanism, and the conveying mechanism is used to drive the inner lining oil pipe to move between the heating position and the flanging position, correspondingly sleeving the inner lining oil pipe outside the heating mechanism or sleeving the flanging mechanism outside the inner lining oil pipe.

2. The inner-lined tubing processing device according to claim 1, characterized in that, The flanging mechanism includes a support seat, a mounting ring, a flanging assembly and a first driving member. The support seat extends vertically, the support seat is erected at the flanging position, the mounting ring is rotatably arranged on the support seat, the support seat, the mounting ring and the inner lining oil pipe are coaxially arranged, the flanging assembly is detachably mounted on the outer edge of the mounting ring, and the first driving member is connected to the mounting ring and is used to drive the mounting ring to drive the flanging assembly in contact with and pressing against the end of the inner lining oil pipe to move circumferentially along the inner lining oil pipe when the flanging mechanism is sleeved outside the inner lining oil pipe.

3. The lining tubing processing device according to claim 2, wherein, The flanging assembly includes a mounting frame, a tensioning member and a flanging member. The mounting frame extends along the axial direction of the inner lining oil pipe, the mounting frame is detachably mounted on the mounting ring, the flanging member is arranged on one side of the mounting ring, the flanging member is hinged to the end of the mounting frame away from the mounting ring, the tensioning member extends along the radial direction of the inner lining oil pipe, the tensioning member is arranged between the mounting frame and the flanging member, and the tensioning member is used to tension the flanging member from the outside of the inner lining oil pipe towards the inside of the inner lining oil pipe.

4. The lining tubing processing device according to claim 3, wherein, The mounting frame includes a connecting portion, a transition portion and a mounting portion. The connecting portion is detachably mounted on the mounting ring, the mounting portion extends out of the side of the mounting ring away from the heating mechanism, the mounting portion is transitionally connected to the connecting portion through the transition portion, and the flanging member is hinged to the mounting portion.

5. The lining tubing processing device according to claim 4, characterized in that, The flanging member includes a connecting rod, a rotating shaft and a flanging portion. The rotating shaft extends along the radial direction of the inner lining oil pipe, one end of the connecting rod is hinged to the mounting portion through the rotating shaft, the other end of the connecting rod is connected to the flanging portion, one end of the tensioning member is connected to the transition portion, and the other end of the tensioning member is connected to the side of the connecting rod facing the transition portion.

6. The inner-lined tubing processing device according to any one of claims 1 to 5, characterized in that, The heating mechanism includes a base, a cantilever and a heating component. The base is arranged outside the conveying mechanism, the cantilever extends along the axial direction of the inner lining oil pipe, one end of the cantilever is mounted on the base, the heating component is mounted on the end of the cantilever away from the base, and when the inner lining oil pipe is sleeved outside the heating mechanism, the end of the cantilever with the heating component mounted thereon extends into the inner lining oil pipe.

7. The inner-lined tubing processing device according to claim 6, wherein, The heating component includes a plurality of arc-shaped heating wires, and the plurality of arc-shaped heating wires are arranged in a circumferential array along the cantilever, and the arc of each arc-shaped heating wire is adapted to the arc of the inner lining oil pipe.

8. The inner-lined tubing processing device according to any one of claims 1 to 5, characterized in that, The conveying mechanism includes a mounting platform, conveying wheels, a second driving member, and two guide rails. The mounting platform and the two guide rails both extend along the circumferential direction of the inner lining oil pipe. The two guide rails are mounted on the mounting platform, and a receiving gap for receiving the inner lining oil pipe and the conveying wheels is provided between the two guide rails. The conveying wheels are rotatably mounted on the mounting platform. The second driving member is connected to the conveying wheels and is used to drive the conveying wheels to drive the inner lining oil pipe to move between the heating position and the flanging position.

9. The inner-lined tubing processing device according to claim 8, wherein, The conveying mechanism further includes a clamping seat, a clamping plate, and a third driving member. The clamping seat is mounted on the mounting platform. The clamping seat has an arc-shaped structure with one side open, and the inner wall of the clamping seat opposite to the opening has an arc adapted to the inner lining oil pipe. The clamping plate is slidably mounted on the mounting platform along the radial direction of the inner lining oil pipe at a position corresponding to the opening. The clamping seat and the clamping plate are oppositely arranged on both sides of the inner lining oil pipe. The third driving member is connected to the clamping plate and is used to drive the clamping plate to move between an initial position and a clamping position, correspondingly causing the clamping plate to move away from the clamping seat and release the inner lining oil pipe, or causing the clamping plate to move closer to the clamping seat and abut against the inner lining oil pipe.

10. A processing method for an inner-lined tubing, characterized in that, Applying the inner lining oil pipe processing device according to any one of claims 1 to 9, the inner lining oil pipe processing method includes: Placing the inner lining oil pipe on the conveying mechanism, with the non-coupling end of the inner lining oil pipe facing the heating mechanism; Using the conveying mechanism to move the inner lining oil pipe to the heating position, so that the inner lining oil pipe is sleeved outside the heating mechanism; Using the heating mechanism to heat the non-coupling end of the inner lining oil pipe and maintaining for a preset time; Using the conveying mechanism again to move the inner lining oil pipe from the heating position to the flanging position, so that the flanging mechanism is sleeved outside the inner lining oil pipe; Using the flanging mechanism to perform flanging processing on the non-coupling end of the inner lining oil pipe.

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