Lining tubing processing apparatus and method

Abstract

The application discloses a kind of inner lining oil pipe processing device and method, it is related to petroleum engineering technical field, wherein the inner lining oil pipe processing device includes conveying mechanism, heating mechanism and flanging mechanism, conveying mechanism extends along the axial direction of inner lining oil pipe, one end of conveying mechanism is provided with flanging position, heating position is provided between the other end of conveying mechanism and flanging position;Heating mechanism is erected in heating position;Flanging mechanism is arranged in flanging position, and flanging mechanism stretches out the end of conveying mechanism from flanging position towards the direction of departing from heating mechanism;Wherein, inner lining oil pipe is placed in conveying mechanism, conveying mechanism is used to drive inner lining oil pipe to move between heating position or flanging position, correspondingly make inner lining oil pipe be provided with heating mechanism or make flanging mechanism be provided with inner lining oil pipe outside.This application avoids the problem that uneven flanging or inconsistent wall thickness distribution is caused by uneven pressure in traditional hydraulic flanging, improves the connection reliability and sealing property of inner lining oil pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of petroleum engineering, and in particular to a liner oil pipe processing device and method. Background Art

[0002] With the rapid development of the oil and gas industry, lined oil pipes are often used as key equipment to ensure the safe transportation of oil and gas. The flanging process of lined oil pipes is an important process to ensure the reliability and sealing of pipeline connections.

[0003] Currently, the flanging process for lined oil pipes is primarily accomplished using hydraulic expansion forming technology. This technology uses specialized hydraulic flanging equipment to place the non-coupling end of the lined oil pipe within a mold. High-pressure liquid media applies uniform pressure to the pipe wall, gradually expanding and deforming the pipe end along the mold contour, ultimately forming a flanging structure.

[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, which can easily lead to uneven flanging or inconsistent wall thickness distribution of the lining oil pipe, affecting the connection reliability of the lining oil pipe. Summary of the Invention

[0005] The main purpose of the present invention is to provide a liner oil pipe processing device and method, aiming to improve the flanging quality of the non-coupling end of the liner oil pipe and enhance the connection reliability of the liner oil pipe.

[0006] To achieve the above-mentioned purpose, the present invention provides a liner oil pipe processing device, comprising:

[0007] 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;

[0008] A heating mechanism, the heating mechanism being mounted at the heating position;

[0009] a flanging mechanism, the flanging mechanism being disposed at the flanging position and extending from one end of the conveying mechanism from the flanging position in a direction away from the heating mechanism;

[0010] The lining oil pipe is placed on the conveying mechanism, and the conveying mechanism is used to drive the lining oil pipe to move between the heating position or the flanging position, so that the lining oil pipe is sleeved outside the heating mechanism or the flanging mechanism is sleeved outside the lining oil pipe.

[0011] In one embodiment, 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 mounted at the flanging position, the mounting ring is rotatably set 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 for driving the mounting ring to drive the flanging assembly that contacts and squeezes the end of the inner lining oil pipe to move circumferentially along the inner lining oil pipe when the flanging mechanism is sleeved on the outside of the inner lining oil pipe.

[0012] In one embodiment, the flanging assembly includes a mounting frame, a tensioning member and a flanging member, the mounting frame extends axially along the 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 one end of the mounting frame away from the mounting ring, the tensioning member extends radially along the 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 lining oil pipe toward the inside of the lining oil pipe.

[0013] 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 from 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.

[0014] In one embodiment, the flanging member includes a connecting rod, a rotating shaft and a flanging portion, the rotating shaft extends radially along 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.

[0015] In one embodiment, the heating mechanism includes a base, a cantilever and a heating assembly, the base is arranged outside the conveying mechanism, the cantilever extends along the axial direction of the lining oil pipe, one end of the cantilever is installed on the base, and the heating assembly is installed on the end of the cantilever away from the base. When the lining oil pipe is sleeved outside the heating mechanism, the end of the cantilever on which the heating assembly is installed extends into the lining oil pipe.

[0016] In one embodiment, the heating assembly includes a plurality of arc-shaped heating wires, which are arranged in a circumferential array along the cantilever, and each of the arc-shaped heating wires is adapted to the curvature of the oil lining pipe.

[0017] In one embodiment, the conveying mechanism includes a mounting platform, a conveying wheel, a second driving member and two guide rails. The mounting platform and the two guide rails extend along the circumference of the lining oil pipe. The two guide rails are mounted on the mounting platform. A accommodating gap for accommodating the lining oil pipe and the conveying wheel is provided between the two guide rails. The conveying wheel is rotatably mounted on the mounting platform. The second driving member is connected to the conveying wheel and is used to drive the conveying wheel to drive the lining oil pipe to move between the heating position or the flanging position.

[0018] In one embodiment, the conveying mechanism also includes a clamping seat, a clamping plate and a third driving member. The clamping seat is installed on the mounting platform. The clamping seat is an arc-shaped structure with an opening on one side. The inner wall of the clamping seat opposite to the opening has an arc that is adapted to the lining oil pipe. The clamping plate is slidably installed on the mounting platform along the radial direction of the lining oil pipe at a position corresponding to the opening. The clamping seat and the clamping plate are relatively arranged on both sides of the lining oil pipe. The third driving member is connected to the clamping plate and is used to drive the clamping plate to move between the initial position and the clamping position, correspondingly moving the clamping plate away from the clamping seat and releasing the lining oil pipe, or moving the clamping plate close to the clamping seat and against the lining oil pipe.

[0019] The present invention further provides a method for processing an inner lining oil pipe, using the inner lining oil pipe processing device as described above. The inner lining oil pipe processing method includes:

[0020] placing the oil-lined pipe on the conveying mechanism with the non-coupling end of the oil-lined pipe facing the heating mechanism;

[0021] 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;

[0022] The non-coupling end of the lined oil pipe is heated by the heating mechanism for a preset time;

[0023] The conveying mechanism is again used 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;

[0024] The flanging mechanism is used to perform flanging processing on the non-coupling end of the lined oil pipe.

[0025] The technical solution of the present invention replaces the traditional hydraulic flanging technology through the coordinated cooperation of the conveying mechanism, the heating mechanism and the flanging mechanism. By utilizing the conveying mechanism to extend axially along the lining oil pipe, the lining oil pipe can be controlled to move between the heating position and the flanging position, and the heating mechanism is used to perform non-contact preheating treatment on the non-coupling end of the lining oil pipe, so that the lining pipe body has good plasticity during the flanging process, which helps to improve the flanging quality. The flanging mechanism that moves circumferentially along the lining oil pipe is then used to apply a uniform force to the end of the lining pipe body, which can effectively solve the technical problems of difficult pressure control, uneven flanging, and inconsistent wall thickness distribution in traditional hydraulic flanging, thereby ensuring the flanging uniformity and consistency of the wall thickness distribution of the non-coupling end of the lining oil pipe. The flanging quality of the lining oil pipe is improved, the reliability and sealing of the lining oil pipe connection are enhanced, and a more reliable guarantee is provided for the safe transportation of oil and gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of an embodiment of a liner oil pipe processing device provided by the present invention;

[0028] Figure 2 This is a schematic structural diagram of the oil lined pipe of the present invention when it is in a heating position;

[0029] Figure 3 This is a schematic structural diagram of the inner-lined oil pipe of the present invention when it is in the flanging position;

[0030] Figure 4 This is a structural schematic diagram of an embodiment of a heating mechanism and a flanging mechanism according to the present invention;

[0031] Figure 5 This is a structural schematic diagram of an embodiment of a flanging mechanism according to the present invention;

[0032] Figure 6 This is a structural schematic diagram of an embodiment of a flanging assembly according to the present invention;

[0033] Figure 7 This is a structural diagram of an embodiment of a conveying mechanism according to the present invention;

[0034] Figure 8 This is a flow chart of an embodiment of a method for processing an inner-lined oil pipe provided by the present invention.

[0035] Description of Figure Numbers:

[0036] 10. Lined oil pipe;

[0037] 100. Conveying mechanism; 200. Heating mechanism; 300. Flanging mechanism; 101. Accommodating gap; 201. Heating position; 301. Flanging position; 110. Mounting platform; 120. Conveying 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 heating wire; 310. Support seat; 320. Mounting ring; 330. Flanging assembly; 340. First driving member; 331. Mounting frame; 332. Tensioning member; 333. Flanging member; 334. Connecting portion; 335. Transition portion; 336. Mounting portion; 337. Connecting rod; 338. Rotating shaft; 339. Flanging portion.

[0038] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0040] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] With the rapid development of the oil and gas industry, lined oil pipes are often used as key equipment to ensure the safe transportation of oil and gas. The flanging process of lined oil pipes is an important process to ensure the reliability and sealing of pipeline connections.

[0043] Currently, the flanging process for lined oil pipes is primarily accomplished using hydraulic expansion forming technology. This technology uses specialized hydraulic flanging equipment to place the non-coupling end of the lined oil pipe within a mold. High-pressure liquid media applies uniform pressure to the pipe wall, gradually expanding and deforming the pipe end along the mold contour, ultimately forming a flanging structure.

[0044] 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 can easily lead to uneven flanging or inconsistent wall thickness distribution of the lining oil pipe, affecting the connection reliability of the lining oil pipe.

[0045] In order to solve this technical problem, the present invention proposes a lining oil pipe processing device.

[0046] See also Figure 1 、 Figure 2 and Figure 3In one embodiment of the present invention, the inner lining oil pipe processing method device 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 inner lining oil pipe 10, and a flanging position 301 is provided at one end of the conveying mechanism 100, and a heating position 201 is provided between the other end of the conveying mechanism 100 and the flanging position 301; the heating mechanism 200 is mounted on the heating position 201; the flanging mechanism 300 is provided at the flanging position 301, and the flanging mechanism 300 extends from one end of the conveying mechanism 100 in a direction away from the heating mechanism 200 from the flanging position 301; wherein the inner lining oil pipe 10 is placed on the conveying mechanism 100, and the conveying mechanism 100 is used to drive the inner lining oil pipe 10 to move between the heating position 201 or the flanging position 301, and correspondingly makes the inner lining oil pipe 10 sleeved on the outside of the heating mechanism 200 or makes the flanging mechanism 300 sleeved on the outside of the inner lining oil pipe 10.

[0047] Specifically, the conveying mechanism 100 extends axially along the inner liner oil pipe 10, forming a transport channel. A flanging position 301 is provided at the front end of the conveying mechanism 100, and a heating position 201 is provided between the rear end of the conveying mechanism 100 and the flanging position 301. The heating mechanism 200 is mounted at the heating position 201, while the flanging mechanism 300 is positioned at the flanging position 301. Part of the flanging mechanism 300 extends beyond the front end of the conveying mechanism 100, allowing it to partially overhang the outer liner oil pipe 100. The inner liner oil pipe 10 is placed on the conveying mechanism 100, which drives the inner liner oil pipe 10 between the heating position 201 and the flanging position 301.

[0048] During the processing of the present invention, the lining oil pipe 10 is first placed on the conveying mechanism 100. The conveying mechanism 100 drives the lining oil pipe 10 to move as a whole toward the heating position 201. When the non-coupling end of the lining oil pipe 10 reaches the heating position 201, the lining oil pipe 10 is sleeved outside the heating mechanism 200. At this time, the heating mechanism 200 heats the lining pipe body at the non-coupling end of the lining oil pipe 10 to soften the material of the lining pipe body in preparation for the subsequent flanging process. After the heating is completed, the conveying mechanism 100 drives the lining oil pipe 10 to move as a whole toward the flanging position 301 again, so that the non-coupling end of the lining oil pipe 10 reaches the flanging position 301. At this time, the outermost layer of the lining oil pipe 10 is sleeved in the flanging mechanism 300 and is held and fixed by the flanging mechanism 300. Next, the flanging mechanism 300 is started and moved circumferentially along the inner lining pipe body of the lined oil pipe 10. The flanging mechanism 300 contacts and acts on the end of the inner lining pipe body of the lined oil pipe 10, and the end of the inner lining pipe body is folded and deformed by applying force uniformly, thereby completing the flanging processing of the non-coupling end of the lined oil pipe 10.

[0049] The technical solution provided by the present invention replaces traditional hydraulic flanging technology through the coordinated cooperation of a conveying mechanism 100, a heating mechanism 200, and a flanging mechanism 300. The conveying mechanism 100 extends axially along the liner oil pipe 10, controlling the movement of the liner oil pipe 10 between a heating position 201 and a flanging position 301. The heating mechanism 200 then performs a non-contact preheating treatment on the non-coupling end of the liner oil pipe 10, imparting excellent plasticity to the liner pipe during the flanging process and improving flanging quality. The flanging mechanism 300, which moves circumferentially along the liner oil pipe 10, then applies a uniform force to the end of the liner pipe, effectively resolving the technical issues of difficult pressure control, uneven flanging, and inconsistent wall thickness distribution associated with traditional hydraulic flanging. This ensures uniform flanging and consistent wall thickness distribution at the non-coupling end of the liner oil pipe 10. This improves the flanging quality of the liner oil pipe 10, enhances the reliability and sealing of the connection, and provides a more reliable guarantee for the safe transportation of oil and gas.

[0050] Please continue reading Figure 1 , and see Figure 4 In an embodiment of the present invention, the flanging mechanism 300 includes a support seat 310, a mounting ring 320, a flanging assembly 330 and a first driving member 340. The support seat 310 extends vertically and is mounted at the flanging position 301. The mounting ring 320 is rotatably arranged on the support seat 310. The support seat 310, the mounting ring 320 and the 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 squeezes the end of the lining oil pipe 10 to move along the circumferential direction of the lining oil pipe 10 when the flanging mechanism 300 is sleeved on the outside of the lining oil pipe 10.

[0051] It should be noted that a portion 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 .

[0052] Specifically, the support seat 310 extends vertically and is mounted at the flanging position 301 to support the entire flanging mechanism 300. The mounting ring 320 is rotatably mounted on the support seat 310, and the support seat 310, the mounting ring 320, and the liner oil pipe 10 are coaxially arranged to ensure that the flanging assembly 330 can move evenly along the circumference of the liner oil pipe 10. The flanging assembly 330 is detachably mounted on the outer edge of the mounting ring 320, facilitating replacement of the flanging assembly 330 for liner oil pipes 10 of different specifications. The first driving member 340 is connected to the mounting ring 320. When the flanging mechanism 300 is sleeved on the outside of the liner oil pipe 10, the first driving member 340 can drive the mounting ring 320 to rotate, driving the flanging assembly 330, which contacts and squeezes the end of the liner oil pipe 10, to move circumferentially along the liner oil pipe 10, thereby achieving uniform flanging of the liner pipe body.

[0053] The mounting ring 320 is sleeved within the support ring and is slidably connected to the support ring, allowing it to rotate within the support ring. When the outermost end of the liner tube 10 contacts the stop protrusion of the support seat 310, the first drive member 340 drives the mounting ring 320 to rotate about its axis, causing the circumferentially mounted flanging assembly 330 of the mounting ring 320 to rotate around the non-coupling end of the liner tube. At this point, the flanging assembly 330 contacts the heated liner tube 10 by the heating mechanism 200, applying uniform pressure to the liner tube, which is pressed against the liner tube to form a flanging. The flanging mechanism 300 can perform a 360-degree uniform flanging process on the liner tube 10, avoiding the uneven flanging caused by uneven pressure in traditional hydraulic flanging. Furthermore, the detachable flanging assembly 330 increases the adaptability of the device, enabling it to handle liner tubes 10 of varying specifications and materials, thus enhancing its versatility.

[0054] In actual application, 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 flanging position 301. The end of the outermost tube body of the liner oil pipe 10 contacts the limiting protrusion of the support seat 310, and the liner oil pipe 10 stops moving. Next, the first driving member 340 is activated, driving the mounting ring 320 to rotate, driving the flanging assembly 330 to move uniformly along the circumference of the liner oil pipe 10. The flanging assembly 330 contacts the end of the liner pipe body and applies pressure. Since the liner pipe body has been heated and softened, under the action of the flanging assembly 330, the end of the liner pipe body gradually folds outward along the radial direction of the liner oil pipe 10, forming a uniform and consistent flanging structure. After the flanging is completed, the liner oil pipe 10 can be removed from the flanging position 301, completing the flanging process of the liner oil pipe 10.

[0055] As an optional embodiment, the support base 310 includes a support ring and two support blocks, which are spaced apart along the width of the conveying mechanism 100 to form a stable support structure. The support ring is mounted at the flange position 301 via the two support blocks, ensuring that the support ring is at an appropriate height to align with the inner liner pipe 10 on the conveying mechanism 100. A limiting protrusion is formed on the inner wall of the support ring. This limiting protrusion is designed to contact the end of the outermost layer of the inner liner pipe 10, providing a positioning and limiting function. This prevents the inner liner pipe 10 from continuing to move out of the conveying mechanism 100 after reaching the flange position 301, ensuring that the inner liner pipe 10 maintains a stable position during the flange process.

[0056] As another optional embodiment, in order to further improve the flanging consistency of the flanging assembly 330 on the non-coupling end of the liner oil pipe 10, there are multiple flanging assemblies 330, and the multiple flanging assemblies 330 are arranged in a circumferential annular array along the mounting ring 320.

[0057] Please continue reading Figure 4 , and see Figure 5 In an 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 lining oil pipe 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 one end of the mounting frame 331 away from the mounting ring 320. The tensioning member 332 extends along the radial direction of the lining oil pipe 10. The tensioning member 332 is arranged between the mounting frame 331 and the flanging member 333. The tensioning member 332 is used to tension the flanging member 333 from the outside of the lining oil pipe 10 toward the inside of the lining oil pipe 10.

[0058] Specifically, the mounting bracket 331 extends axially along the liner oil pipe 10 and is removably mounted on the mounting ring 320, facilitating replacement of the flanging assembly 330 compatible with the flanging process of the current liner oil pipe 10, depending on the specifications of the liner oil pipe 10. The flanging member 333 is disposed on one side of the mounting ring 320 and hingedly connected to the end of the mounting bracket 331 facing away from the mounting ring 320, allowing the flanging member 333 to move freely and adapt to changes in the shape of the end of the liner pipe body. The tensioning member 332 extends radially along the liner oil pipe 10 and is disposed between the mounting bracket 331 and the flanging member 333. It is used to tension the flanging member 333 from the outside of the liner oil pipe 10 toward the inside of the liner oil pipe 10, ensuring close contact between the flanging member 333 and the end of the liner pipe body.

[0059] During the processing of the liner oil pipe 10, after being heated by the heating mechanism 200, the conveying mechanism 100 delivers the liner oil pipe 10 to the flanging position 301. The outermost end of the liner oil pipe 10 contacts the stop protrusion of the support seat 310, and the liner oil pipe 10 stops moving. Next, the first driving member 340 is activated, driving the mounting ring 320 to rotate, driving the mounting frame 331 and the flanging member 333 to move uniformly along the circumference of the liner oil pipe 10. When the non-coupling end of the liner oil pipe first contacts the flanging member 333, the flanging member 333 is squeezed outward along the axial direction of the liner oil pipe 10. At this time, due to the elasticity of the tensioning member 332, the tensioning member 332 ensures that the flanging member 333 maintains close contact with the non-coupling end of the liner oil pipe as it rotates circumferentially, thereby improving the flanging quality of the non-coupling end of the liner oil pipe.

[0060] The tensioning member 332 solves the problem of loose contact between the flanging tool and the liner pipe body in traditional flanging processes. During the flanging process, the shape and size of the liner pipe end may vary slightly. If the flanging tool is fixed, it can easily lead to 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 liner pipe body according to the actual situation of the liner pipe end, ensuring that the flanging member 333 always maintains appropriate contact force with the liner pipe body, achieving a uniform and consistent flanging effect.

[0061] Furthermore, the flanging member 333 is hingedly connected to the end of the mounting bracket 331 facing away from the mounting ring 320, allowing the flanging member 333 to have a certain degree of angle adjustment capability. This allows the flanging member 333 to adaptively adjust its working angle according to the shape changes of the liner pipe end, further improving the adaptability and quality stability of the flanging. When the flanging member 333 contacts the liner pipe end 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 liner pipe end, ensuring that the direction and magnitude of the flanging force are always optimal.

[0062] It should be understood that the axis of the flanging member 333 is set at an angle to 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°.

[0063] 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 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, and the flanging piece 333 is hinged to the mounting portion 336.

[0064] Specifically, the connecting portion 334 is removably mounted on the mounting ring 320, facilitating disassembly and replacement as needed. The mounting portion 336 extends from the side of the mounting ring 320 facing away from the heating mechanism 200. That is, the mounting portion 336 is located outside the mounting ring 320, allowing the flange 333 to be positioned appropriately to contact the end of the liner tube. The mounting portion 336 is transitionally connected to the connecting portion 334 via a transition portion 335, forming a single, integrated structure. The flange 333 is hingedly connected to the mounting portion 336, allowing it a certain degree of freedom of movement.

[0065] This segmented mounting bracket 331 structure allows the flange 333 to extend beyond the side of the mounting ring 320, ensuring that the flange 333 can better contact the end of the liner pipe. After the liner pipe 10 is heated by the heating mechanism 200, the conveying mechanism 100 delivers the liner pipe 10 to the flange position 301. The outermost end of the liner pipe 10 contacts the stop protrusion of the support seat 310, and the liner pipe 10 stops moving. At this point, the flange 333 extends through the mounting portion 336 beyond the side of the mounting ring 320 facing away from the heating mechanism 200, and is positioned just outside the end of the liner pipe.

[0066] During the flanging process, the first driver 340 rotates the mounting ring 320, which in turn drives the flanging member 333 on the mounting bracket 331 to move circumferentially along the inner liner tube. Because the flanging member 333 is hinged to the mounting portion 336, when it contacts the end of the inner liner tube, it automatically adjusts its angle based on the shape of the end. The tensioning member 332 maintains close contact between the flanging member 333 and the inner liner tube, ensuring uniform application of the flanging force.

[0067] 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.

[0068] Please continue to refer to Figure 6 In an embodiment of the present invention, the flanging member 333 includes a connecting rod 337, a rotating shaft 338 and a flanging portion 339. The rotating shaft 338 extends radially along the inner 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 flanging 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.

[0069] Specifically, a rotating shaft 338 extends radially along the inner liner tubing 10. One end of a connecting rod 337 is hingedly connected to the mounting portion 336 via the rotating shaft 338, allowing the connecting rod 337 to rotate about the rotating shaft 338, providing a certain degree of freedom of movement. The other end of the connecting rod 337 is connected to the flange portion 339, which is the working component that actually contacts and acts on the end of the inner liner tubing. One end of the tensioning member 332 is connected to the transition portion 335 of the mounting bracket 331, and the other end is connected to the side of the connecting rod 337 facing the transition portion 335, forming a tensioning structure that enables the flange portion 339 to maintain close contact with the end of the inner liner tubing.

[0070] This three-section flanging member 333 structure cooperates with the three-section structure of the aforementioned mounting bracket 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, which in turn drives the mounting bracket 331 and the flanging member 333 to move circumferentially along the liner oil pipe 10. Because the connecting rod 337 in the flanging member 333 is hinged to the mounting portion 336 via a rotating shaft 338, when the flanging portion 339 contacts the end of the liner pipe body, the connecting rod 337 can rotate about the rotating shaft 338, allowing the flanging portion 339 to automatically adjust its angle and position according to the shape of the liner pipe body end.

[0071] At the same time, one end of the tensioning 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 tensioning structure. This structure ensures that during the flanging process, even if there are slight differences in the shape and size of the liner tube end, the flanging portion 339 can always maintain close contact with the liner tube end. When the liner tube end applies pressure to the flanging portion 339, the connecting rod 337 rotates about the rotating shaft 338, but the tensioning member 332 generates a tensioning force in the opposite direction, causing the flanging portion 339 to always apply pressure toward the liner tube end, ensuring a consistent flanging effect.

[0072] The rotating shaft 338 extends radially along the inner liner pipe 10. This arrangement ensures that the rotation plane of the connecting rod 337 is parallel to the axial direction of the inner liner pipe 10, so that the movement direction of the flange portion 339 is primarily along the axial direction of the inner liner pipe 10. This ensures that the flanging force acts primarily along the axial direction of the inner liner pipe end, rather than the radial direction, thereby avoiding radial deformation that may occur during the flanging process and improving the accuracy and quality of the flanging.

[0073] The flange 339 is the working component that actually contacts and acts on the end of the liner tube. Its shape and material have a direct impact on the flanging effect. Depending on the material of the liner tube and the flanging requirements, the flange 339 can be constructed in various shapes and materials, such as arc, bevel, or stepped, to accommodate varying flanging needs. The flange 339 is typically made of wear-resistant, high-strength materials to ensure it maintains good working condition even after extended use.

[0074] This flanging member 333 structure, consisting of a connecting rod 337, a rotating shaft 338, and a flanging portion 339, combined with the elastic tensioning action of a tensioning member 332, solves the problems of unstable contact between the flanging tool and the liner tube body and imprecise flanging force control in traditional flanging processes. The connecting rod 337 is hinged to the mounting portion 336 via a rotating shaft 338, increasing the flexibility of the flanging process and enabling the flanging portion 339 to adaptively adjust its position and angle based on the actual conditions of the liner tube end. The tensioning member 332 ensures close contact between the flanging portion 339 and the liner tube end, ensuring uniform application of the flanging force.

[0075] Please continue reading Figure 1 and Figure 4 In an 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 lining oil pipe 10, one end of the cantilever 220 is installed on the base 210, and the heating component 230 is installed at the end of the cantilever 220 away from the base 210. When the lining oil pipe 10 is sleeved outside the heating mechanism 200, the end of the cantilever 220 equipped with the heating component 230 extends into the lining oil pipe 10.

[0076] Specifically, the base 210 is disposed outside the conveying mechanism 100, providing stable support for the entire heating mechanism 200. The cantilever 220 extends axially along the liner oil pipe 10, with one end mounted on the base 210, forming a cantilever structure. The heating assembly 230 is mounted on the end of the cantilever 220 away from the base 210, i.e., the free end of the cantilever 220. When the liner oil pipe 10 is sleeved outside the heating mechanism 200, the end of the cantilever 220 on which the heating assembly 230 is mounted extends into the liner oil pipe 10, allowing the heating assembly 230 to directly heat the inner side of the liner pipe body.

[0077] This internal heating method has significant advantages over traditional external heating methods. Traditional external heating methods primarily heat the outer surface of the lining pipe 10, requiring heat to be transferred through the pipe wall to the lining pipe body, resulting in low heating efficiency and prone to uneven heating. The heating mechanism 200 of the present invention, however, extends the heating assembly 230 into the lining pipe 10 via the cantilever 220, directly heating the inner side of the lining pipe body. Heat is directly applied to the lining pipe body, resulting in high heating efficiency and more uniform heating.

[0078] The arrangement of the base 210 outside the conveying mechanism 100 enables the heating mechanism 200 and the conveying mechanism 100 to form an independent yet coordinated system. This arrangement not only minimizes interference from the heating mechanism 200 with the conveying mechanism 100 but also facilitates installation, adjustment, and maintenance of the heating mechanism 200. The height and position of the base 210 can be adjusted as needed to accommodate lined oil pipes 10 of varying specifications.

[0079] Cantilever arm 220 extends axially along the liner tubing 10, ensuring that heating assembly 230 is accurately positioned inside the non-coupling end of the liner tubing. The length of cantilever arm 220 can be adjusted based on the length of the liner tubing 10 and heating requirements to ensure that heating assembly 230 reaches the optimal heating position 201. Cantilever arm 220 is typically constructed of high-temperature-resistant, high-strength materials to ensure stable structure and performance even in high-temperature environments.

[0080] The heating assembly 230 is mounted at the end of the cantilever 220 away from the base 210, i.e., the free end of the cantilever 220. This allows the heating assembly 230 to more flexibly adapt to changes in the inner diameter of the liner tubing 10. The heating assembly 230 can be a heating wire, an induction heating coil, or an infrared heating element, depending on the material of the liner tubing and the heating requirements. The heating assembly 230 is typically equipped with a temperature sensor and a temperature control system to monitor and control the heating temperature in real time to ensure consistent heating results.

[0081] When the liner oil pipe 10 is placed outside the heating mechanism 200, the end of the cantilever 220, equipped with the heating assembly 230, extends into the liner oil pipe 10. The heating assembly 230 directly heats the inner side of the non-coupling end of the liner pipe. This uniformly heats the liner pipe to the required temperature for flanging, preparing the liner pipe for subsequent flanging. After heating is complete, the conveying mechanism 100 transports the liner oil pipe 10 to the flanging position 301, where the flanging mechanism 300 completes the flanging process.

[0082] Please continue reading Figure 4 In an embodiment of the present invention, the heating assembly 230 includes a plurality of arc-shaped heating wires 231 , which are arranged in a circumferential array along the cantilever 220 , and each arc-shaped heating wire 231 is adapted to the curvature of the lining oil pipe 10 .

[0083] Specifically, multiple arc-shaped heating wires 231 are arranged in an array along the circumference of the cantilever 220 to form an annular heating area. The curvature of each arc-shaped heating wire 231 matches the curvature of the inner wall of the liner oil pipe 10, ensuring that the heating assembly 230 can uniformly heat the liner pipe body.

[0084] When the cantilever 220 of the heating mechanism 200 extends into the inner lining oil pipe 10, the arc-shaped heating wire 231 is located just inside the non-coupling end of the inner lining pipe body. Since the curvature of the arc-shaped heating wire 231 matches the curvature of the inner wall of the inner lining oil pipe 10, the arc-shaped heating wire 231 maintains an appropriate distance from the inner wall of the inner lining pipe body, which can ensure heating efficiency and avoid damage that may be caused by direct contact. Multiple arc-shaped heating wires 231 are arranged in a circumferential array along the cantilever 220 to form a complete annular heating area, so that the inner lining pipe body can be evenly heated in the circumferential direction, avoiding the problem of local overheating or insufficient heating. Compared with traditional straight or spiral heating wires, it has obvious advantages. When traditional straight or spiral heating wires are heated in a circular pipe, they often cannot achieve uniform heating, which easily leads to uneven temperature distribution on the pipe wall. The arc-shaped heating wire 231 used in the present invention has a curvature that matches the curvature of the inner wall of the lining oil pipe 10, which can transfer the heat generated by the heating wire more evenly to various parts of the lining pipe body, thereby improving heating uniformity.

[0085] The number of curved heating wires 231 can be adjusted based on the diameter of the oil-lined pipe 10 and the required heating requirements. Generally, a greater number of curved heating wires 231 results in more uniform heating, but this also increases structural complexity and cost. In practical applications, an appropriate number of curved heating wires 231 can be selected based on the specifications of the oil-lined pipe 10 and the requirements for flanging, ensuring uniform heating while simplifying the structure and reducing costs.

[0086] The power and temperature of the arc-shaped heating wire 231 can be precisely controlled using a control system known in related art. This control system automatically adjusts the power and operating time of the heating wire based on the material, thickness, and flange requirements of the inner liner, ensuring that the inner liner is heated to the appropriate temperature. Furthermore, the control system monitors the operating status and temperature of the heating wire, promptly identifying and addressing any abnormalities and improving the safety and reliability of the heating process.

[0087] During the actual heating process, when the lining oil pipe 10 is sleeved outside the heating mechanism 200, the cantilever 220 extends into the lining oil pipe 10, and the arc-shaped heating wire 231 is located on the inner side of the non-coupling end of the lining pipe body. The control system starts the heating wire, and the arc-shaped heating wire 231 generates heat to uniformly heat the lining pipe body. Since an appropriate distance is maintained between the arc-shaped heating wire 231 and the inner wall of the lining pipe body, heat is mainly transferred to the lining pipe 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, so that the lining pipe body is evenly heated in the circumferential direction.

[0088] Please continue reading Figure 1 , and see Figure 7In an embodiment of the present invention, the conveying mechanism 100 includes a mounting platform 110, a conveying wheel 120, a second driving member 130 and two guide rails 140. The mounting platform 110 and the two guide rails 140 extend along the circumference of the lining oil pipe 10. The two guide rails 140 are mounted on the mounting platform 110. An accommodating gap 101 for accommodating the lining oil pipe 10 and the conveying wheel 120 is provided between the two guide rails 140. The conveying wheel 120 is rotatably mounted on the mounting platform 110. The second driving member 130 is connected to the conveying wheel 120 and is used to drive the conveying wheel 120 to drive the lining oil pipe 10 to move between the heating position 201 or the flanging position 301.

[0089] Specifically, the mounting platform 110 and two guide rails 140 extend along the circumference of the oil lining pipe 10, forming a stable support and guidance system. The two guide rails 140 are mounted on the mounting platform 110, with a gap 101 between them to accommodate the oil lining pipe 10 and the conveying wheels 120, ensuring that the oil lining pipe 10 can move stably within the constraints of the guide rails 140. The conveying wheels 120 are rotatably mounted on the mounting platform 110 and in contact with the oil lining pipe 10, driving the outermost layer of the oil lining pipe 10 and the entire oil lining pipe 10. A second drive member 130 is connected to the conveying wheels 120, providing driving force, enabling the conveying wheels 120 to move the oil lining pipe 10 between the heating position 201 and the flanging position 301. This conveying mechanism 100, in conjunction with the aforementioned heating mechanism 200 and flanging mechanism 300, completes the flanging process of the oil lining pipe 10. The mounting platform 110 provides a stable support as the foundation of the entire conveying mechanism 100. The length of the mounting platform 110 is determined according to the processing requirements of the liner oil pipe 10 and should ensure that it can cover the entire distance from the heating position 201 to the flanging position 301.

[0090] Two guide rails 140 are mounted on the mounting platform 110. They extend along the circumference of the oil lining pipe 10, forming a guide channel. The distance between the guide rails 140, or the accommodation gap 101, accommodates the oil lining pipe 10 and the conveying wheel 120 while also effectively restraining the oil lining pipe 10, preventing it from shifting or rotating during movement. The guide rails 140 are typically made of wear-resistant, low-friction materials, reducing resistance to the movement of the oil lining pipe 10 and improving conveying efficiency.

[0091] The conveying wheel 120 is rotatably mounted on the mounting platform 110, located within the receiving gap 101 between the two guide rails 140, and contacts the outer surface of the oil lining pipe 10. Multiple conveying wheels 120 can be provided as needed, distributed along the travel path of the oil lining pipe 10 to ensure smooth movement of the oil lining pipe 10. The outer surface of the conveying wheel 120 is typically coated with an elastic material to increase friction with the oil lining pipe 10 while preventing damage to the surface of the oil lining pipe 10.

[0092] The second drive member 130 is connected to the conveying wheel 120 and provides driving force for the conveying wheel 120. The second drive member 130 can be a motor, a pneumatic cylinder, or a hydraulic cylinder, and the appropriate drive method is selected based on the weight and required movement speed of the liner oil pipe 10. The second drive member 130 is typically equipped with a speed control system that can precisely control the rotation speed of the conveying wheel 120, thereby controlling the movement speed and position of the liner oil pipe 10, ensuring that the liner oil pipe 10 remains accurately positioned at the heating position 201 and the flanging position 301.

[0093] During the processing of the lining oil pipe 10, the lining oil pipe 10 is first placed in the accommodation gap 101 between the two guide rails 140, with the bottom of the lining oil pipe 10 in contact with the conveying wheel 120. The second driving member 130 is started to drive the conveying wheel 120 to rotate, and the conveying wheel 120 drives the lining oil pipe 10 to move along the guide rail 140 through friction. When the lining oil pipe 10 reaches the heating position 201, the second driving member 130 stops running, and the lining oil pipe 10 remains at the heating position 201 and is mounted outside the heating mechanism 200. The heating mechanism 200 heats the non-coupling end of the lining pipe body. After heating is completed, the second driving member 130 is started again, driving the conveying wheel 120 to drive the lining oil pipe 10 to the flanging position 301, and the flanging mechanism 300 completes the flanging process. The constraints of the guide rails 140 and the driving of the conveying wheels 120 ensure the stability and movement accuracy of the lined oil pipe 10 during the processing, thus providing a guarantee for the smooth progress of the heating and flanging processes.

[0094] Please continue reading Figures 1 to 3In an embodiment of the present invention, the conveying mechanism 100 further includes a clamping seat 150, a splint 160 and a third driving member 170. The clamping seat 150 is installed on the mounting platform 110. The clamping seat 150 is an arc-shaped structure with an opening on one side. The inner wall of the clamping seat 150 opposite to the opening has an arc adapted to the lining oil pipe 10. The splint 160 is slidably installed on the mounting platform 110 along the radial direction of the lining oil pipe 10 at a position corresponding to the opening. The clamping seat 150 and the splint 160 are relatively arranged on both sides of the lining oil pipe 10. The third driving member 170 is connected to the splint 160 and is used to drive the splint 160 to move between the initial position and the clamping position, correspondingly moving the splint 160 away from the clamping seat 150 and releasing the lining oil pipe 10, or moving the splint 160 close to the clamping seat 150 and against the lining oil pipe 10.

[0095] Specifically, the clamping seat 150 is mounted on the mounting platform 110 and has an arc-shaped structure with one side open. The inner wall of the clamping seat 150 opposite the opening has a curvature that matches the outer surface of the lining pipe 10, allowing it to fit snugly against the outer surface of the lining pipe 10. The clamping plate 160 is slidably mounted on the mounting platform 110 in the radial direction of the lining pipe 10 at the position corresponding to the opening. The clamping seat 150 and the clamping plate 160 are positioned opposite each other on either side of the lining pipe 10, forming an adjustable clamping structure. A 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 clamping and releasing the lining pipe 10.

[0096] This clamping structure solves the problem of displacement or rotation of the liner oil pipe 10 during transportation. During the flanging process, the liner oil pipe 10 must be accurately positioned at the flanging position 301 to ensure heating and flanging accuracy. Without a reliable clamping device, the liner oil pipe 10 may shift or rotate during the flanging process, affecting the flanging accuracy.

[0097] The clamping seat 150 has an arc-shaped structure with one side open. This design allows the clamping seat 150 to partially surround the liner oil pipe 10, providing a larger contact area and more stable support. The inner wall of the clamping seat 150 opposite the opening has a curvature that matches the liner oil pipe 10, increasing the contact area between the clamping seat 150 and the liner oil pipe 10 and preventing deformation or damage to the liner oil pipe 10 that could be caused by point contact. The inner wall of the clamping seat 150 is provided with a flexible cushioning pad, the curvature of which can be adjusted or replaced to accommodate different specifications of the liner oil pipe 10 to accommodate liner oil pipes 10 of different diameters.

[0098] Clamping plate 160 is slidably mounted on mounting platform 110 along the radial direction of oil liner 10 at the position corresponding to the opening. This allows clamping plate 160 to move radially and adjust the distance between clamping seat 150 to accommodate oil liner 10 of varying diameters. Clamping plate 160 typically has an inner surface with the same curvature as the inner wall of clamping seat 150 to increase the contact area with oil liner 10 and improve clamping stability.

[0099] The clamping seat 150 and the clamping plate 160 are positioned opposite each other on either side of the oil lining pipe 10, forming a clamping space. When the clamping plate 160 approaches the clamping seat 150, driven by the third driving member 170, the oil lining pipe 10 is clamped between the clamping seat 150 and the clamping plate 160, securing it to the conveying mechanism 100. To release the oil lining pipe 10, the third driving member 170 drives the clamping plate 160 away from the clamping seat 150, releasing the oil lining pipe 10.

[0100] The third driving member 170 can be a pneumatic cylinder, a hydraulic cylinder, or an electric push rod, capable of providing 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 lined oil pipe 10 and operational requirements to ensure a smooth and reliable clamping process.

[0101] In actual use, after the liner oil pipe 10 is placed on the conveying mechanism 100, the third driving member 170 drives the clamping plate 160 from its initial position to the clamping position, bringing the clamping plate 160 close to the clamping seat 150 and against the liner oil pipe 10, thereby clamping the liner oil pipe 10 between the clamping seat 150 and the clamping plate 160. At this point, there is no need to worry about the liner oil pipe 10 shifting or rotating during the flanging process. When the flanging process of the liner oil pipe 10 is completed, the third driving member 170 drives the clamping plate 160 from the clamping position back to its initial position, moving the clamping plate 160 away from the clamping seat 150, releasing the liner oil pipe 10, and facilitating the removal of the processed liner oil pipe 10.

[0102] 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 .

[0103] Please continue reading Figures 1 to 7 , and see Figure 8 The present invention further provides a method for processing an inner lining oil pipe, using the inner lining oil pipe processing device as described above, the inner lining oil pipe processing method comprising:

[0104] Step S10, placing the oil-lined pipe 10 on the conveying mechanism 100, with the non-coupling end of the oil-lined pipe 10 facing the heating mechanism 200;

[0105] Step S20, using the conveying mechanism 100 to move the oil lining pipe 10 to the heating position 201, so that the oil lining pipe 10 is sleeved outside the heating mechanism 200;

[0106] Step S30, heating the non-coupling end of the lined oil pipe 10 by using the heating mechanism 200 for a preset time;

[0107] Step S40 , again using the conveying mechanism 100 to move the oil lining pipe 10 from the heating position 201 to the flanging position 301 , so that the flanging mechanism 300 is sleeved on the outside of the oil lining pipe 10 ;

[0108] In step S50 , the non-coupling end of the lined oil pipe 10 is flanging-processed by using the flanging mechanism 300 .

[0109] Specifically, in step S10, the operator places the lining oil pipe 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 lining oil pipe 10 is consistent with the axial direction of the conveying mechanism 100 to avoid displacement during subsequent movement. The lining oil pipe 10 should be placed firmly, 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 lining oil pipe 10, the positioning device on the conveying mechanism 100 can be adjusted to ensure that the lining oil pipe 10 can be firmly placed on the conveying mechanism 100. For lining oil pipes 10 of different diameters, the width and height of the conveying mechanism 100 can be adjusted to accommodate lining oil pipes 10 of different sizes.

[0110] In step S20, the driving component of the conveying mechanism 100 is started, so that the conveying platform drives the lining oil pipe 10 to move axially to the heating position 201. The moving speed should be smooth and controllable, and it is generally recommended to be 10 to 20 cm / s to ensure that the lining oil pipe 10 does not shift or slip due to inertia. When the non-coupling end of the lining oil pipe 10 reaches the heating position 201, the conveying mechanism 100 stops moving, so that the lining oil pipe 10 is sleeved on the outside of the heating mechanism 200. At this time, the cantilever 220 of the heating mechanism 200, on which one end of the heating component 230 is installed, extends into the lining oil pipe 10 and is accurately positioned on the inner side of the non-coupling end of the lining pipe body, preparing for the subsequent heating step.

[0111] In step S30, the purpose of this step is to heat the non-coupling end of the lined oil pipe 10 to an appropriate temperature to soften the liner pipe body and create conditions for the subsequent flanging process. The setting of heating temperature and time is very critical. The following provides heating parameters for two typical lined oil pipe 10 materials:

[0112] The HDPE lined oil pipe 10 is heated, 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.

[0113] The PTFE lined oil pipe 10 is heated, 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.

[0114] During the heating process, heating assembly 230 uniformly heats the non-coupling end of the liner pipe to ensure uniform temperature distribution. A temperature sensor in heating assembly 230 monitors the heating temperature in real time, and the temperature control system automatically adjusts the heating power based on the set value to ensure temperature stability. After heating is complete, the non-coupling end of the liner pipe reaches a softened state, enhancing its ductility and plasticity, creating optimal conditions for flanging.

[0115] In step S40, after heating is complete, the drive assembly of the conveying mechanism 100 is reactivated to move the liner pipe 10 from the heating position 201 to the flanging position 301. The movement speed must be controlled at this point; a range of 5 to 10 cm / s is generally recommended. A speed too high should be avoided to prevent the heated liner pipe from losing its softening effect due to temperature drop. Furthermore, rotation or deviation of the liner pipe 10 should be avoided during the movement process to ensure that the non-coupling end of the liner pipe accurately reaches the flanging position 301.

[0116] When the non-coupling end of the liner oil pipe 10 reaches the flanging position 301, the end of the outermost layer of the liner oil pipe 10 contacts the limiting protrusion of the support seat 310. At this time, the conveying mechanism 100 stops moving, and the flanging mechanism 300 is installed outside the liner oil pipe 10. At this time, the flanging assembly 330 is located outside the non-coupling end of the liner pipe body, ready for flanging.

[0117] In step S50, the first driving member 340 of the flanging mechanism 300 is activated, causing the mounting ring 320 to rotate about its axis, driving the mounting frame 331 and the flanging member 333 to move uniformly along the circumference of the non-coupling end of the liner pipe body. The flanging member 333 contacts the end of the liner pipe body. Since the liner pipe body has been heated and softened, the flanging member 333 gradually folds the end of the liner pipe body outward, forming a uniform and consistent flanging structure.

[0118] During the flanging process, the movement speed of the flanging member 333 should be stable and controllable, generally recommended to be 30 to 60 degrees per second, that is, it takes 6 to 12 seconds to complete one circle. The flanging force should also be moderate to ensure the flanging effect without causing excessive deformation or damage to the liner material. Because the flanging member 333 is hinged to the mounting portion 336 via the rotating shaft 338 and is acted upon by the tensioning member 332, it can adapt to the shape changes of the end of the liner, maintain close contact with the end of the liner, and ensure the consistency of the flanging quality.

[0119] After the flange is completed, the flange quality can be visually inspected, including the uniformity, flatness and tightness of the flange. A qualified flange should have a uniform shape, no obvious cracks, wrinkles or deformation, and be able to form a tight fit with the coupling end.

[0120] To sum up, the inner lining oil pipe processing method provided by the present invention solves the problems of complex structure, difficult debugging and maintenance, and unstable pressure control existing in traditional hydraulic flanging technology, improves the quality and efficiency of flanging of the inner lining oil pipe 10, and provides strong guarantees for the connection reliability and sealing of the inner lining oil pipe 10, which is of great significance to ensuring the safe transportation of oil and gas.

[0121] It should be understood that the inner lining oil pipe processing method applies the inner lining oil pipe processing device as mentioned above. The specific structure of the inner lining oil pipe processing device refers to the above embodiment. Since the inner lining oil pipe processing method adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0122] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the scope of protection of the present invention.

Claims

1. A lining oil pipe processing device, characterized in that: include: 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 mounted at the heating position; a flanging mechanism, the flanging mechanism being disposed at the flanging position and extending from one end of the conveying mechanism from the flanging position in a direction away from the heating mechanism; 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, so that the inner lining oil pipe is sleeved outside the heating mechanism or the flanging mechanism is sleeved outside the inner lining oil pipe; The flanging mechanism includes a support seat, a mounting ring, a flanging assembly and a first driving member, the support seat extending vertically, the support seat mounted on the flanging position, the mounting ring 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, the first driving member is connected to the mounting ring, and is used for driving the mounting ring to drive the flanging assembly that contacts and squeezes the end of the inner lining oil pipe to move along the circumferential direction of the inner lining oil pipe when the flanging mechanism is sleeved on the outer side of the inner lining oil pipe; The flanging assembly includes a mounting bracket, a tensioning member, and a flanging member, wherein the mounting bracket extends axially along the inner lining oil pipe and is detachably mounted on the mounting ring. The flanging member is disposed on one side of the mounting ring and is hingedly connected to an end of the mounting bracket facing away from the mounting ring. The tensioning member extends radially along the inner lining oil pipe and is disposed between the mounting bracket and the flanging member. The tensioning member is used to tension the flanging member from the outside of the inner lining oil pipe toward the inside of the inner lining oil pipe. 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 from a side of the mounting ring away from the heating mechanism. The mounting portion is transitionally connected to the connecting portion via the transition portion. The flanging member is hinged to the mounting portion. The flanging member includes a connecting rod, a rotating shaft and a flanging portion, the rotating shaft extends radially along 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.

2. The lining oil pipe processing device according to claim 1, 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 lining oil pipe, one end of the cantilever is installed on the base, and the heating component is installed on the end of the cantilever away from the base. When the lining oil pipe is sleeved outside the heating mechanism, the end of the cantilever equipped with the heating component extends into the lining oil pipe.

3. The lining oil pipe processing device according to claim 2, characterized in that: The heating assembly includes a plurality of arc-shaped heating wires, which are arranged in a circumferential array along the cantilever, and each arc-shaped heating wire is adapted to the curvature of the inner lining oil pipe.

4. The lining oil pipe processing device according to claim 1, characterized in that: The conveying mechanism includes a mounting platform, a conveying wheel, a second driving member and two guide rails. The mounting platform and the two guide rails extend along the circumference of the lining oil pipe. The two guide rails are mounted on the mounting platform. A accommodating gap for accommodating the lining oil pipe and the conveying wheel is provided between the two guide rails. The conveying wheel is rotatably mounted on the mounting platform. The second driving member is connected to the conveying wheel and is used to drive the conveying wheel to drive the lining oil pipe to move between the heating position and the flanging position.

5. The lining oil pipe processing device according to claim 4, characterized in that: The conveying mechanism also includes a clamping seat, a clamping plate and a third driving member. The clamping seat is installed on the mounting platform. The clamping seat is an arc-shaped structure with an opening on one side. The inner wall of the clamping seat opposite to the opening has an arc that is adapted to the lining oil pipe. The clamping plate is slidably installed on the mounting platform along the radial direction of the lining oil pipe at a position corresponding to the opening. The clamping seat and the clamping plate are relatively arranged on both sides of the lining oil pipe. The third driving member is connected to the clamping plate and is used to drive the clamping plate to move between the initial position and the clamping position, correspondingly moving the clamping plate away from the clamping seat and releasing the lining oil pipe, or moving the clamping plate close to the clamping seat and against the lining oil pipe.

6. A method for processing an inner-lined oil pipe, characterized in that: The oil lining pipe processing device according to any one of claims 1 to 5 is used, and the oil lining pipe processing method includes: placing the oil-lined pipe on the conveying mechanism with the non-coupling end of the oil-lined 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; The non-coupling end of the lined oil pipe is heated by the heating mechanism for a preset time; The conveying mechanism is again used 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; The flanging mechanism is used to perform flanging processing on the non-coupling end of the lined oil pipe.

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