Automatic welding equipment and welding method for oil and gas pipeline

Abstract

The invention relates to automatic welding equipment for oil and gas pipelines and a welding method.The automatic welding equipment for the oil and gas pipelines comprises a horizontal supporting plate, a fixed supporting plate, a sliding supporting plate, a driving mechanism, a pipeline supporting rod and a plurality of supporting rod assemblies, and the fixed supporting plate is fixed to the upper surface of one end of the horizontal supporting plate; the sliding supporting plate is slidably connected to the upper surface of the other end of the horizontal supporting plate and can be close to or away from the fixed supporting plate. The driving mechanism is installed on the fixed supporting plate, the driving end of the driving mechanism is connected with one end of the pipeline supporting rod, a rotating bearing is arranged at the other end of the pipeline supporting rod, a containing groove used for containing the rotating bearing is formed in the upper end of the sliding supporting plate, and the pipeline supporting rod and the horizontal supporting plate are arranged in parallel. The multiple supporting rod assemblies are arranged on the outer surface of the pipeline supporting rod and can move in the radial direction of the pipeline supporting rod. The welding point at the joint of the first oil-gas pipeline and the second oil-gas pipeline is more accurate, the welding use standard of a user can be met, and the welding requirement of the user for the pipeline is met.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline welding auxiliary equipment, and in particular to automatic welding equipment and a welding method for oil and gas pipelines. Background Art

[0002] Welding, also known as fusion, is a manufacturing process and technology that uses heat, high temperature, or high pressure to join metals or other thermoplastic materials such as plastics. Modern welding uses a variety of energy sources, including gas flame, arc, laser, electron beam, friction, and ultrasonic.

[0003] After searching, the authorized Chinese patent announcement number CN 218396795 U discloses an oil and gas pipeline welding device, including a fixed seat, a support frame, a support base, a pipeline fixing structure, an auxiliary docking structure and a pipeline rotation structure; the support frame is fixedly arranged at the four corners of the ground of the fixed seat, and the support base is fixedly connected to the bottom end of the support frame. The interior of the fixed seat is provided with an inner cavity, and the auxiliary docking structure is provided in the inner cavity of the fixed seat. The pipeline fixing structure is installed at the auxiliary docking structure, and the pipeline rotation structure is provided at the auxiliary docking structure. The present application has a pipeline fixing structure, and the pipeline fixing structure can be more conveniently clamped and fixed to the pipeline to be welded, which can effectively ensure the stable fixation of the pipeline. At the same time, pipelines of different sizes can be fixed within a certain range, and it is more flexible to use.

[0004] The oil and gas pipeline welding equipment in the above patent still has certain problems. When welding existing oil and gas pipelines, the two oil and gas pipelines are often welded by moving the welder back and forth. The back and forth movement of the welder can easily cause a certain deviation in the weld points, which can easily cause the welding parts between the pipelines to shift, failing to meet the user's welding standards and unable to satisfy the user's welding needs. Summary of the Invention

[0005] In order to solve the problem that in the existing oil and gas pipeline welding, two oil and gas pipelines are often welded by moving the welding machine back and forth, and the back and forth movement of the welding machine can easily lead to a certain deviation in the weld points, thereby easily causing the welding parts between the pipelines to shift, failing to meet the user's welding standards and unable to satisfy the user's welding needs, the present invention provides an automatic welding device and welding method for oil and gas pipelines.

[0006] The present invention solves the above-mentioned technical problem with the following technical solution: An automatic welding device for oil and gas pipelines comprises a horizontal support plate, a fixed support plate, a sliding support plate, a drive mechanism, a pipeline support rod, and a plurality of support rod assemblies, wherein the fixed support plate is fixed to the upper surface of one end of the horizontal support plate, and the sliding support plate is slidably connected to the upper surface of the other end of the horizontal support plate and can move closer to or farther away from the fixed support plate;

[0007] The driving mechanism is mounted on the fixed support plate, the driving end of the driving mechanism is connected to one end of the pipe support rod, the other end of the pipe support rod is provided with a rotary bearing, the upper end of the sliding support plate is provided with a receiving groove for placing the rotary bearing, the pipe support rod is arranged parallel to the horizontal support plate; a plurality of support rod assemblies are arranged on the outer surface of the pipe support rod so as to be able to move radially along the pipe support rod.

[0008] The beneficial effects of the present invention are as follows: the present invention can support the pipeline support rod by arranging a fixed support plate and a sliding support plate on the horizontal support plate, and a support rod assembly that can move radially is provided on the pipeline support rod, which can tighten the two oil and gas pipelines sleeved on the outer surface of the support rod assembly, so that the ends of the two oil and gas pipelines can be stably abutted and fitted, and the driving mechanism can synchronously rotate the first oil and gas pipeline and the second oil and gas pipeline that are stably abutted and fitted, so that the welding host can continuously weld the junction of the first oil and gas pipeline and the second oil and gas pipeline without moving back and forth, thereby avoiding the problem of deviation of the welding point caused by the back and forth movement of the welding host, making the welding point of the junction of the first oil and gas pipeline and the second oil and gas pipeline more accurate, which can meet the user's welding standards and meet the user's welding needs for pipelines.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the support rod assembly includes a pipe wall support plate and a hinged rod, one end of the pipe support rod is provided with a connecting sleeve that can slide axially, the pipe support rod is provided with a threaded section on the axial outside of the connecting sleeve, and a driving screw sleeve is threadedly connected to the threaded section. One end of the pipe wall support plate is hinged to the connecting sleeve through the hinged rod, and the other end of the pipe wall support plate is hinged to the pipe support rod through the hinged rod.

[0011] The beneficial effect of adopting the above further solution is that by providing the connecting sleeve and the driving screw sleeve, the connecting sleeve can be driven to move axially by rotating the driving screw sleeve, thereby driving the pipe wall support plate to move radially.

[0012] Furthermore, the connecting sleeve is provided with a plurality of circumferentially arranged first connecting blocks, the pipe support rod is provided with a plurality of circumferentially arranged third connecting blocks, and the pipe wall support plate is provided with a second connecting block at each end of one side close to the pipe support rod. The second connecting blocks at one end of the pipe wall support plates of the multiple support rod assemblies correspond one-to-one to the first connecting blocks on the connecting sleeve and are hinged through a hinge rod, and the second connecting blocks at the other end of the pipe wall support plates of the multiple support rod assemblies correspond one-to-one to the third connecting blocks on the pipe support rod and are hinged through a hinge rod.

[0013] The beneficial effect of adopting the above further solution is that the provision of the connecting block facilitates the connection of the hinged rod.

[0014] Furthermore, the support rod assembly includes a pipe wall support plate and a hinged rod, both ends of the pipe support rod are provided with connecting sleeves that can slide axially, and the pipe support rod is provided with a threaded section on the axial outside of the two connecting sleeves, and a driving screw sleeve is threadedly connected to the threaded section. The two ends of the pipe wall support plate are respectively hinged to the two connecting sleeves through the hinged rod.

[0015] The beneficial effect of adopting the above further solution is: by arranging a connecting sleeve and a driving screw sleeve at each end of the pipe support rod, it is convenient to drive both ends of the pipe support rod at the same time, making the radial movement of the pipe wall support plate more stable and reliable.

[0016] Furthermore, the connecting sleeve is provided with a plurality of circumferentially arranged first connecting blocks, and the pipe wall support plate is provided with a second connecting block at each end of one side close to the pipe support rod. The second connecting blocks at both ends of the pipe wall support plates of the multiple support rod assemblies correspond one-to-one to the first connecting blocks on the two connecting sleeves and are hinged through a hinged rod.

[0017] Furthermore, an elongated sliding groove is provided on the outer surface of the pipe support rod, and the sliding groove is arranged along the axial direction of the pipe support rod. A slider is provided on the inner side wall of the connecting sleeve, and the slider is slidably arranged in the corresponding sliding groove;

[0018] The outer surface of the pipe wall support plate is an arc-shaped structure adapted to the inner wall of the pipe.

[0019] The beneficial effect of adopting the above further solution is that the axial movement of the connecting sleeve is made more stable through the cooperation between the sliding groove and the slider.

[0020] Furthermore, the accommodating groove is a U-shaped groove with an open upper end and through two sides. The sliding support plate is provided with a first screw rod arranged perpendicular to the pipe support rod. The first screw rod is threadedly connected to the sliding support plate and can extend into the U-shaped groove to abut the rotating bearing.

[0021] The beneficial effect of adopting the above further solution is that the rotary bearing can be tightened by the first screw to prevent the rotary bearing from falling out of the U-shaped groove or the driving process from being unstable.

[0022] Furthermore, a support plate slide groove is provided on the upper surface of the horizontal support plate, the lower end of the sliding support plate is slidably arranged in the support plate slide groove and can slide along the axial direction of the pipeline support rod, and a second screw rod is provided on the horizontal support plate and is arranged perpendicular to the pipeline support rod, the second screw rod is threadedly connected to the horizontal support plate and can extend into the support plate slide groove to abut the sliding support plate;

[0023] A counterweight box is also provided on the side of the fixed support plate facing away from the pipeline support rod;

[0024] A welding host is installed on one side of the horizontal support plate, and the welding host is located between the fixed support plate and the sliding support plate.

[0025] The beneficial effect of adopting the above further solution is that the second screw can effectively abut the sliding support plate that has moved into place, thereby preventing the sliding support plate from shaking.

[0026] Furthermore, the fixed support plate is arranged in parallel with the sliding support plate, and the pipe support rod is arranged perpendicular to the fixed support plate; the end of the support plate slide away from the fixed support plate is an open structure, so that the sliding support plate can slide out of the support plate slide.

[0027] A welding method using the above-mentioned automatic welding equipment for oil and gas pipelines comprises the following steps:

[0028] S1, sequentially sleeve the first oil and gas pipeline to be welded and the second oil and gas pipeline on the outside of the support rod assembly, and then slide the lower end of the sliding support plate onto the upper surface of the other end of the horizontal support plate;

[0029] S2, inserting the rotary bearing at the other end of the pipeline support rod into the receiving groove;

[0030] S3, fitting the ends of the first oil and gas pipeline and the second oil and gas pipeline together, so that the support rod assembly moves radially and abuts against the inner sidewalls of the first oil and gas pipeline and the second oil and gas pipeline;

[0031] S4, simultaneously start the driving mechanism and the welding host located on the side of the joint between the ends of the first oil and gas pipeline and the second oil and gas pipeline, the welding end of the welding host performs a welding operation on the joint between the ends of the first oil and gas pipeline and the second oil and gas pipeline, the driving mechanism drives the pipeline support rod to rotate, so that the first oil and gas pipeline and the second oil and gas pipeline rotate at the same time, so that the welding host continuously welds the joint between the ends of the first oil and gas pipeline and the second oil and gas pipeline.

[0032] The beneficial effect of the present invention is that the welding method of the present invention can accurately weld the joint of the first oil and gas pipeline and the second oil and gas pipeline, can meet the user's welding standards, and meet the user's welding needs for pipelines. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the three-dimensional structure of the automatic welding equipment for oil and gas pipelines of the present invention;

[0034] Figure 2 This is a schematic diagram of the internal structure of the automatic welding equipment for oil and gas pipelines of the present invention;

[0035] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the middle part A;

[0036] Figure 4 for Figure 2 A schematic diagram of the enlarged structure of the middle part B;

[0037] Figure 5 This is a schematic diagram of the main structure of the automatic welding equipment for oil and gas pipelines of the present invention;

[0038] Figure 6 This is a schematic top view of the structure of the automatic welding equipment for oil and gas pipelines of the present invention.

[0039] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0040] 1. Horizontal support plate; 2. Fixed support plate; 3. Sliding support plate; 4. Driving mechanism; 5. Pipe support rod; 6. Rotary bearing; 7. Accommodating groove; 8. Pipe wall support plate; 9. Articulated rod; 10. Threaded section; 11. Connecting sleeve; 12. Driving screw sleeve; 13. First connecting block; 14. Second connecting block; 15. Slide; 16. First screw; 17. Second screw; 18. Support plate slide; 19. Counterweight box; 20. Welding host; 21. First oil and gas pipeline; 22. Second oil and gas pipeline; 23. Support slider. DETAILED DESCRIPTION

[0041] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0042] Example 1

[0043] like Figures 1 to 6 As shown, an automatic welding device for oil and gas pipelines in this embodiment includes a horizontal support plate 1, a fixed support plate 2, a sliding support plate 3, a drive mechanism 4, a pipeline support rod 5 and a plurality of support rod assemblies, wherein the fixed support plate 2 is fixed to the upper surface of one end of the horizontal support plate 1, and the sliding support plate 3 is slidably connected to the upper surface of the other end of the horizontal support plate 1 and can move closer to or farther away from the fixed support plate 2;

[0044] The driving mechanism 4 is installed on the fixed support plate 2, and the driving end of the driving mechanism 4 is connected to one end of the pipe support rod 5. The other end of the pipe support rod 5 is provided with a rotary bearing 6. The upper end of the sliding support plate 3 is provided with a receiving groove 7 for placing the rotary bearing 6. The pipe support rod 5 is arranged parallel to the horizontal support plate 1; a plurality of support rod assemblies are arranged on the outer surface of the pipe support rod 5 so as to be able to move radially along the pipe support rod 5.

[0045] like Figure 2 and Figure 3 As shown, the accommodating groove 7 of this embodiment is a U-shaped groove with an open top and two through-holes. The sliding support plate 3 is provided with a first screw 16 arranged perpendicular to the pipe support rod 5. The first screw 16 is threadedly connected to the sliding support plate 3 and can extend into the U-shaped groove to abut the rotary bearing 6. The first screw can be used to tighten the rotary bearing to prevent it from falling out of the U-shaped groove or causing an unstable driving process.

[0046] like Figure 2 and Figure 4 As shown, an optional solution of this embodiment is that the upper surface of the horizontal support plate 1 is provided with a support plate slide groove 18, the lower end of the sliding support plate 3 is slidably arranged in the support plate slide groove 18 and can slide along the axial direction of the pipeline support rod 5, and the horizontal support plate 1 is provided with a second screw 17 arranged perpendicular to the pipeline support rod 5, the second screw 17 is threadedly connected to the horizontal support plate 1 and can extend into the support plate slide groove 18 to abut the sliding support plate 3;

[0047] Specifically, a support slider 23 is provided at the lower end of the sliding support plate 3. The width of the support slider 23 is smaller than the width of the sliding support plate 3. The support slider 23 is slidably set in the support plate slide groove 18, and the parts of the two sides of the sliding support plate 3 that extend beyond the support slider 23 abut against the upper surface of the horizontal support plate 1.

[0048] Preferably, the free ends of the first screw rod 16 and the second screw rod 17 are both provided with a handle for easy gripping, making it more convenient for the user to rotate the first screw rod and the second screw rod.

[0049] Specifically, such as Figure 1 、 Figure 2 、 Figure 5 and Figure 6 As shown, a counterweight box 19 is further provided on the side of the fixed support plate 2 facing away from the pipeline support rod 5;

[0050] Specifically, such as Figure 1 、 Figure 5 and Figure 6 As shown, a welding machine 20 is mounted on one side of the horizontal support plate 1, located between the fixed support plate 2 and the sliding support plate 3. Specifically, a connecting side plate can be provided on one side of the horizontal support plate 1, and the welding machine 20 can be mounted on the connecting side plate. The second screw 17 can effectively abut the sliding support plate 3 when it is moved into position, preventing it from shaking.

[0051] Specifically, such as Figure 1 、 Figure 2 、 Figure 5 and Figure 6 As shown, the fixed support plate 2 is arranged parallel to the sliding support plate 3, and the pipe support rod 5 is arranged perpendicular to the fixed support plate 2; the end of the support plate slide 18 away from the fixed support plate 2 is an open structure, so that the sliding support plate 3 can slide out of the support plate slide 18.

[0052] The driving mechanism of this embodiment can be a driving motor, and the driving shaft of the driving motor is connected and fixed to the end of the pipeline support rod 5.

[0053] Preferably, the bottom end of the driving motor is connected to the horizontal support plate via a connecting plate. This solution can make the driving motor drive the pipeline support rod more stable.

[0054] A welding method using the above-mentioned automatic welding equipment for oil and gas pipelines comprises the following steps:

[0055] S1: The first oil and gas pipeline 21 and the second oil and gas pipeline 22 to be welded are sequentially sleeved on the outside of the support rod assembly, and then the lower end of the sliding support plate 3 is slidably connected to the upper surface of the other end of the horizontal support plate 1; by rotating the second screw 17, the second screw 17 can resist the sliding support plate 3, thereby stably fixing the sliding support plate 3 on the horizontal support plate 1;

[0056] S2, insert the rotary bearing 6 at the other end of the pipe support rod 5 into the receiving groove 7, and by rotating the first screw 16, the first screw 16 can resist the rotary bearing 6, thereby stably limiting the rotary bearing 6 in the receiving groove 7;

[0057] S3, fitting the ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22 together, so that the strut assembly moves radially and abuts against the inner sidewalls of the first oil and gas pipeline 21 and the second oil and gas pipeline 22;

[0058] S4, simultaneously start the driving mechanism 4 and the welding host 20 located on the side of the joint between the ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22, and the welding end of the welding host 20 performs a welding operation on the joint between the ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22. The driving mechanism 4 drives the pipeline support rod 5 to rotate, so that the first oil and gas pipeline 21 and the second oil and gas pipeline 22 rotate at the same time, so that the welding host 20 continues to weld the joint between the ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22.

[0059] This embodiment can support the pipeline support rod by arranging a fixed support plate and a sliding support plate on the horizontal support plate. The pipeline support rod is provided with a support rod assembly that can move radially, which can tighten the two oil and gas pipelines sleeved on the outer surface of the support rod assembly, so that the ends of the two oil and gas pipelines can be stably abutted and fitted, and the driving mechanism can synchronously rotate the first oil and gas pipeline and the second oil and gas pipeline that are stably abutted and fitted, so that the welding host can continuously weld the junction of the first oil and gas pipeline and the second oil and gas pipeline without moving back and forth, thereby avoiding the problem of deviation of the welding point caused by the back and forth movement of the welding host, making the welding point of the junction of the first oil and gas pipeline and the second oil and gas pipeline more accurate, which can meet the user's welding standards and meet the user's welding needs for pipelines.

[0060] Example 2

[0061] Based on Example 1, this example describes the specific structure of the strut assembly as follows.

[0062] refer to Figure 2 and Figure 3 The support rod assembly includes a pipe wall support plate 8 and a hinged rod 9. One end of the pipe support rod 5 is sleeved with an axially slidable connecting sleeve 11. The pipe support rod 5 is provided with a threaded section 10 on the axial outside of the connecting sleeve 11 (the outside refers to the side of the connecting sleeve close to the rotary bearing). A driving screw sleeve 12 is threadedly connected to the threaded section 10. One end of the pipe wall support plate 8 is hinged to the connecting sleeve 11 via the hinged rod 9, and the other end of the pipe wall support plate 8 is hinged to the pipe support rod 5 via the hinged rod 9. By providing the connecting sleeve and the driving screw sleeve, the connecting sleeve can be driven to move axially by rotating the driving screw sleeve, thereby driving the pipe wall support plate to move radially.

[0063] Specifically, such as Figure 2 and Figure 3 As shown, the connecting sleeve 11 is provided with a plurality of circumferentially arranged first connecting blocks 13, the pipe support rod 5 is provided with a plurality of circumferentially arranged third connecting blocks, and the pipe wall support plate 8 is provided with a second connecting block 14 at each end of a side close to the pipe support rod 5. The second connecting blocks 14 at one end of the pipe wall support plates 8 of the multiple brace assemblies correspond one-to-one with the first connecting blocks 13 on the connecting sleeve 11 and are hingedly connected via a hinge rod 9. The second connecting blocks 14 at the other end of the pipe wall support plates 8 of the multiple brace assemblies correspond one-to-one with the third connecting blocks on the pipe support rod 5 and are hingedly connected via a hinge rod 9. The provision of the connecting blocks facilitates the connection of the hinge rods.

[0064] Further, such as Figure 3As shown, a hinged rod is connected to each side of the first connecting block 13 via a rotating shaft, and these two hinged rods are also connected to the corresponding sides of the second connecting block 14 via rotating shafts. The use of two hinged rods to hinge the first connecting block and the second connecting block makes the connection of the pipe wall support plate 8 more stable and reliable.

[0065] like Figure 2 and Figure 3 As shown, preferably, the outer surface of the pipe support rod 5 is provided with a long strip of sliding groove 15, and the sliding groove 15 is arranged along the axial direction of the pipe support rod 5. A slider is provided on the inner wall of the connecting sleeve 11, and the slider is slidably set in the corresponding sliding groove 15; through the cooperation of the sliding groove and the slider, the axial movement of the connecting sleeve is more stable.

[0066] Optionally, the outer surface of the pipe wall support plate 8 is an arc-shaped structure adapted to the inner wall of the pipe, so that the pipe wall support plate can fit more stably against the inner side of the first oil and gas pipe and the second oil and gas pipe.

[0067] A welding method using the above-mentioned automatic welding equipment for oil and gas pipelines comprises the following steps:

[0068] S1: The first oil and gas pipeline 21 and the second oil and gas pipeline 22 to be welded are sequentially sleeved on the outside of the pipe wall support plate 8, and then the lower end of the sliding support plate 3 is slidably connected to the upper surface of the other end of the horizontal support plate 1; by rotating the second screw 17, the second screw 17 can resist the sliding support plate 3, thereby stably fixing the sliding support plate 3 on the horizontal support plate 1;

[0069] S2, insert the rotary bearing 6 at the other end of the pipe support rod 5 into the receiving groove 7; by rotating the first screw 16, the first screw 16 can resist the rotary bearing 6, thereby stably limiting the rotary bearing 6 in the receiving groove 7;

[0070] S3: The ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22 are brought into contact with each other. The drive screw sleeve 12 at one end of the rotating pipeline support rod 5 squeezes the connecting sleeve 11 to move axially. The hinge rod 9 drives the pipe wall support plate 8 to move radially and abut against the inner walls of the first oil and gas pipeline 21 and the second oil and gas pipeline 22.

[0071] S4, simultaneously start the driving mechanism 4 and the welding host 20 located on the side of the joint between the ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22, and the welding end of the welding host 20 performs a welding operation on the joint between the ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22. The driving mechanism 4 drives the pipeline support rod 5 to rotate, so that the first oil and gas pipeline 21 and the second oil and gas pipeline 22 rotate at the same time, so that the welding host 20 continues to weld the joint between the ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22.

[0072] Example 3

[0073] Based on Example 1, this example describes the specific structure of the strut assembly as follows.

[0074] like Figures 2 to 6 As shown, the brace assembly of this embodiment includes a pipe wall support plate 8 and a hinged rod 9. Both ends of the pipe support rod 5 are sleeved with axially slidable connecting sleeves 11. The pipe support rod 5 is provided with a threaded section 10 on the axial outside of the two connecting sleeves 11 (the outside refers to the side of the connecting sleeve close to the rotating bearing and the side close to the fixed support plate). A driving screw sleeve 12 is threadedly connected to the threaded section 10. The two ends of the pipe wall support plate 8 are respectively hinged to the two connecting sleeves 11 through the hinged rod 9. By providing a connecting sleeve and a driving screw sleeve at each end of the pipe support rod, it is convenient to drive both ends of the pipe support rod simultaneously, making the radial movement of the pipe wall support plate more stable and reliable.

[0075] like Figures 2 to 6 As shown, the connecting sleeve 11 of this embodiment is provided with a plurality of circumferentially arranged first connecting blocks 13, and the pipe wall support plate 8 is provided with a second connecting block 14 at both ends of one side close to the pipe support rod 5. The second connecting blocks 14 at both ends of the pipe wall support plates 8 of the multiple support rod assemblies correspond one-to-one to the first connecting blocks 13 on the two connecting sleeves 11 and are hinged by a hinge rod 9.

[0076] like Figure 2 and Figure 3 As shown, preferably, the outer surface of the pipe support rod 5 is provided with a long strip of sliding groove 15, and the sliding groove 15 is arranged along the axial direction of the pipe support rod 5. A slider is provided on the inner wall of the connecting sleeve 11, and the slider is slidably set in the corresponding sliding groove 15; through the cooperation of the sliding groove and the slider, the axial movement of the connecting sleeve is more stable.

[0077] Optionally, the outer surface of the pipe wall support plate 8 is an arc-shaped structure adapted to the inner wall of the pipe, so that the pipe wall support plate can fit more stably against the inner side of the first oil and gas pipe and the second oil and gas pipe.

[0078] A welding method using the above-mentioned automatic welding equipment for oil and gas pipelines comprises the following steps:

[0079] S1: The first oil and gas pipeline 21 and the second oil and gas pipeline 22 to be welded are sequentially sleeved on the outside of the pipe wall support plate 8, and then the lower end of the sliding support plate 3 is slidably connected to the upper surface of the other end of the horizontal support plate 1; by rotating the second screw 17, the second screw 17 can resist the sliding support plate 3, thereby stably fixing the sliding support plate 3 on the horizontal support plate 1;

[0080] S2, insert the rotary bearing 6 at the other end of the pipe support rod 5 into the receiving groove 7; by rotating the first screw 16, the first screw 16 can resist the rotary bearing 6, thereby stably limiting the rotary bearing 6 in the receiving groove 7;

[0081] S3: The ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22 are brought into contact with each other. The drive screw sleeves 12 at both ends of the rotating pipeline support rod 5 squeeze the connecting sleeve 11 to move axially. The hinge rod 9 drives the pipe wall support plate 8 to move radially and abut against the inner walls of the first oil and gas pipeline 21 and the second oil and gas pipeline 22.

[0082] S4, simultaneously start the driving mechanism 4 and the welding host 20 located on the side of the joint between the ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22, and the welding end of the welding host 20 performs a welding operation on the joint between the ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22. The driving mechanism 4 drives the pipeline support rod 5 to rotate, so that the first oil and gas pipeline 21 and the second oil and gas pipeline 22 rotate at the same time, so that the welding host 20 continues to weld the joint between the ends of the first oil and gas pipeline 21 and the second oil and gas pipeline 22.

[0083] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0085] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0086] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0087] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0088] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An automatic welding equipment for oil and gas pipelines, characterized in that: It includes a horizontal support plate, a fixed support plate, a sliding support plate, a driving mechanism, a pipeline support rod and a plurality of support rod assemblies, wherein the fixed support plate is fixed to the upper surface of one end of the horizontal support plate, and the sliding support plate is slidably connected to the upper surface of the other end of the horizontal support plate and can be close to or away from the fixed support plate; The driving mechanism is installed on the fixed support plate, the driving end of the driving mechanism is connected to one end of the pipe support rod, the other end of the pipe support rod is provided with a rotating bearing, the upper end of the sliding support plate is provided with a receiving groove for placing the rotating bearing, the pipe support rod is arranged parallel to the horizontal support plate; a plurality of support rod assemblies are arranged on the outer surface of the pipe support rod so as to be able to move radially along the pipe support rod.

2. The automatic welding equipment for oil and gas pipelines according to claim 1 is characterized in that: The support rod assembly includes a pipe wall support plate and a hinge rod, one end of the pipe support rod is sleeved with a connecting sleeve that can slide axially, the pipe support rod is provided with a threaded section on the axial outside of the connecting sleeve, and a driving screw sleeve is threadedly connected to the threaded section, one end of the pipe wall support plate is hinged to the connecting sleeve through the hinge rod, and the other end of the pipe wall support plate is hinged to the pipe support rod through the hinge rod.

3. The automatic welding equipment for oil and gas pipelines according to claim 2 is characterized in that: The connecting sleeve is provided with a plurality of circumferentially arranged first connecting blocks, the pipe support rod is provided with a plurality of circumferentially arranged third connecting blocks, and the two ends of the pipe wall support plate close to the pipe support rod are respectively provided with a second connecting block, the second connecting blocks at one end of the pipe wall support plates of the plurality of support rod assemblies correspond one-to-one to the first connecting blocks on the connecting sleeve and are hinged through a hinge rod, and the second connecting blocks at the other end of the pipe wall support plates of the plurality of support rod assemblies correspond one-to-one to the third connecting blocks on the pipe support rod and are hinged through a hinge rod.

4. The automatic welding equipment for oil and gas pipelines according to claim 1 is characterized in that: The support rod assembly includes a pipe wall support plate and a hinged rod. Both ends of the pipe support rod are provided with connecting sleeves that can slide axially. The pipe support rod is provided with a threaded section on the axial outer side of each of the two connecting sleeves. A driving screw sleeve is threadedly connected to the threaded section. The two ends of the pipe wall support plate are respectively hinged to the two connecting sleeves through the hinged rod.

5. The automatic welding equipment for oil and gas pipelines according to claim 4 is characterized in that: The connecting sleeve is provided with a plurality of circumferentially arranged first connecting blocks, and the two ends of the pipe wall support plate close to the pipe support rod are each provided with a second connecting block. The second connecting blocks at both ends of the pipe wall support plates of the plurality of support rod assemblies correspond one-to-one to the first connecting blocks on the two connecting sleeves and are hinged through a hinge rod.

6. The automatic welding equipment for oil and gas pipelines according to any one of claims 2 to 5, characterized in that: The outer surface of the pipeline support rod is provided with a long strip-shaped slide groove, and the slide groove is arranged along the axial direction of the pipeline support rod. A slider is provided on the inner side wall of the connecting sleeve, and the slider is slidably arranged in the corresponding slide groove; The outer surface of the pipe wall support plate is an arc-shaped structure adapted to the inner wall of the pipe.

7. The automatic welding equipment for oil and gas pipelines according to claim 1 is characterized in that: The accommodating groove is a U-shaped groove with an open upper end and through two sides. The sliding support plate is provided with a first screw rod arranged perpendicular to the pipe support rod. The first screw rod is threadedly connected to the sliding support plate and can extend into the U-shaped groove to abut against the rotating bearing.

8. The automatic welding equipment for oil and gas pipelines according to claim 1 is characterized in that: The upper surface of the horizontal support plate is provided with a support plate slide groove, the lower end of the sliding support plate is slidably arranged in the support plate slide groove and can slide along the axial direction of the pipeline support rod, the horizontal support plate is provided with a second screw rod vertically arranged with the pipeline support rod, the second screw rod is threadedly connected to the horizontal support plate and can extend into the support plate slide groove to abut against the sliding support plate; A counterweight box is also provided on the side of the fixed support plate away from the pipeline support rod; A welding host is installed on one side of the horizontal support plate, and the welding host is located between the fixed support plate and the sliding support plate.

9. The automatic welding equipment for oil and gas pipelines according to claim 8, characterized in that: The fixed support plate is arranged in parallel with the sliding support plate, and the pipeline support rod is arranged perpendicular to the fixed support plate; the end of the support plate slide away from the fixed support plate is an open structure, so that the sliding support plate can slide out of the support plate slide.

10. A welding method using the oil and gas pipeline automatic welding equipment according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, sleeve the first oil and gas pipeline to be welded and the second oil and gas pipeline on the outside of the support rod assembly in sequence, and then slide the lower end of the sliding support plate to the upper surface of the other end of the horizontal support plate; S2, inserting the rotary bearing at the other end of the pipeline support rod into the receiving groove; S3, fitting and abutting the ends of the first oil and gas pipeline and the second oil and gas pipeline, so that the support rod assembly moves radially and abuts against the inner side walls of the first oil and gas pipeline and the second oil and gas pipeline; S4, simultaneously start the driving mechanism and the welding host located on one side of the joint between the ends of the first oil and gas pipeline and the second oil and gas pipeline, the welding end of the welding host performs welding operations on the joint between the ends of the first oil and gas pipeline and the second oil and gas pipeline, the driving mechanism drives the pipeline support rod to rotate, so that the first oil and gas pipeline and the second oil and gas pipeline rotate at the same time, so that the welding host continuously welds the joint between the ends of the first oil and gas pipeline and the second oil and gas pipeline.

Images