Marine oil and gas large-diameter pipeline welding quality analysis device

Abstract

The invention relates to the technical field of welding quality analysis, and discloses an offshore oil and gas large-diameter pipeline welding quality analysis device which comprises two arc-shaped supporting plates, a laser detection camera and an infrared distance sensor, the two arc-shaped supporting plates are symmetrically arranged in an abutting mode, and a connecting mechanism is arranged between the two ends of the two arc-shaped supporting plates; the two arc-shaped supporting plates are connected in a limiting mode through a connecting mechanism, the laser detection camera and the infrared distance sensor are arranged below the two arc-shaped supporting plates correspondingly, and transverse plates are arranged on the upper side of the laser detection camera and the upper side of the infrared distance sensor correspondingly. According to the marine oil and gas large-diameter pipeline welding quality analysis device, circular motion detection is conducted around a welding seam through the laser detection camera and the infrared distance sensor, efficient and automatic welding seam roundness and integrity detection can be achieved, and the welding quality of a marine oil and gas large-diameter pipeline can be guaranteed.

Description

Technical Field

[0001] This invention relates to the field of welding quality analysis technology, specifically to a welding quality analysis device for large-diameter marine oil and gas pipelines. Background Technology

[0002] In offshore oil and gas development, large-diameter pipelines are critical infrastructure for transporting oil and gas. The welding quality of these pipelines directly affects the safety and stability of oil and gas transportation. Due to the harsh marine environment, including seawater corrosion and wave impact, the welding quality requirements for large-diameter pipelines are extremely stringent. Traditional welding quality inspection methods have many shortcomings in inspecting weld seams of large-diameter pipelines. Manual inspection is not only inefficient, but the results are also easily affected by subjective factors, making it difficult to accurately and comprehensively assess key quality indicators such as the roundness and integrity of the weld seam. Some existing automated inspection equipment often cannot perform circumferential motion inspection around the weld seam of large-diameter pipelines, resulting in blind spots and making it impossible to conduct comprehensive and efficient inspection of the entire weld seam. This makes it difficult to guarantee the welding quality of large-diameter offshore oil and gas pipelines and increases safety hazards during oil and gas transportation. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a welding quality analysis device for large-diameter marine oil and gas pipelines. This device has the advantages of enabling efficient and automated detection of weld roundness and integrity, ensuring the welding quality of large-diameter marine oil and gas pipelines, and solving the problems mentioned in the background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a welding quality analysis device for large-diameter marine oil and gas pipelines, comprising an arc-shaped support plate, a laser detection camera, and an infrared distance sensor. Two arc-shaped support plates are symmetrically arranged abutting each other, and a connecting mechanism is provided between the two ends of the two arc-shaped support plates. The two arc-shaped support plates are connected by the connecting mechanism. The laser detection camera and the infrared distance sensor are respectively disposed below the two arc-shaped support plates. A horizontal plate is provided above both the laser detection camera and the infrared distance sensor, and a horizontal plate is provided below the horizontal plate. An L-shaped rod is slidably mounted, and a mounting plate is fixedly mounted on the lower end of the L-shaped rod. The laser detection camera and the infrared distance sensor are respectively fixedly mounted to their corresponding mounting plates. A first adjustment mechanism that drives the L-shaped rod to move is provided on the lower side of the horizontal plate. A transmission mechanism that drives the horizontal plate to move in a circular motion along an arc-shaped support plate is provided on one side of the upper surface of the horizontal plate. A support mechanism that keeps the horizontal plate moving stably is provided on the upper side of the arc-shaped support plate. Arc-shaped clamping plates are provided on the inner sides of both arc-shaped support plates. A second adjustment mechanism that adjusts the position of the arc-shaped clamping plates is provided on the inner side of the arc-shaped support plates.

[0005] Preferably, the connecting mechanism includes a first connecting block and a second connecting block. The two first connecting blocks are fixedly disposed on the outer walls of both ends of the arc-shaped support plate on one side, and the two second connecting blocks are fixedly disposed on the outer walls of both ends of the arc-shaped support plate on the other side. The side walls of the first connecting blocks and the second connecting blocks are provided with through holes, and a bolt is inserted between two adjacent through holes. One end of the bolt is threaded with a nut.

[0006] Preferably, the first adjusting mechanism includes a first threaded rod and two side plates. The two side plates are fixedly disposed on the lower surface of the horizontal plate and located on both sides of the L-shaped rod. The first threaded rod is rotatably disposed between the two side plates, and the upper end of the L-shaped rod is threadedly connected to the rod wall of the first threaded rod.

[0007] Preferably, the transmission mechanism includes gears and teeth. The lower surface of the arc-shaped support plate has a first arc-shaped cavity, and the lower side of the first arc-shaped cavity has a first arc-shaped opening. A transmission rod is rotatably mounted on the upper surface of the horizontal plate. The upper end of the transmission rod extends through the first arc-shaped opening to the inner side of the first arc-shaped cavity. The gear is fixedly sleeved on the top end of the transmission rod. Multiple teeth are arranged in a circular array along one side of the inner wall of the first arc-shaped cavity. The gear and teeth mesh with each other. A motor is fixedly mounted on one side of the lower surface of the horizontal plate. The output end of the motor is fixedly connected to one end of the transmission rod.

[0008] Preferably, the support mechanism includes an arc-shaped slider and a support rod. The support rod is fixedly disposed on one side of the upper surface of the horizontal plate. A connecting plate is fixedly disposed on the upper end of the support rod. A second arc-shaped cavity is formed inside the upper side of the arc-shaped support plate. A second arc-shaped opening is formed on the upper surface of the second arc-shaped cavity. One end of the connecting plate extends to the upper side of the second arc-shaped opening. A connecting rod is fixedly disposed on the lower side of the connecting plate away from the support rod. The lower end of the connecting rod extends through the second arc-shaped opening into the interior of the second arc-shaped cavity. The arc-shaped slider is slidably disposed inside the second arc-shaped cavity. The lower end of the connecting rod is fixedly connected to the upper side of the arc-shaped slider.

[0009] Preferably, the second adjusting mechanism includes an internally threaded tube and a second threaded rod. The internally threaded tube is rotatably disposed on the side of the arc-shaped support plate near the arc-shaped clamping plate. The second threaded rod is threadedly sleeved inside the internally threaded tube, and one end of the second threaded rod is fixedly connected to the arc-shaped clamping plate.

[0010] Preferably, a slide bar is provided parallel to one side of the first threaded rod, both ends of the slide bar are fixedly connected to the corresponding side plates, and one end of the L-shaped rod is movably sleeved with the slide bar.

[0011] Preferably, a fixing tube is provided on the lower side of the internally threaded tube, one end of the fixing tube is fixedly connected to the side wall of the arc-shaped support plate, and a movable rod is movably sleeved inside the fixing tube, one end of the movable rod is fixedly connected to the arc-shaped clamping plate.

[0012] Preferably, a knob is fixedly sleeved on the outer wall of one end of the internally threaded tube.

[0013] Compared with the prior art, the present invention provides a welding quality analysis device for large-diameter marine oil and gas pipelines, which has the following beneficial effects: 1. This welding quality analysis device for large-diameter marine oil and gas pipelines uses a motor in the transmission mechanism to drive the transmission rod to rotate, causing the gears to mesh and thus driving the horizontal plate to move in a circular motion along the arc-shaped support plate. This achieves automated circular motion detection of the weld seam by the laser detection camera and infrared distance sensor. Compared with traditional manual inspection, this greatly improves the detection efficiency and can comprehensively detect the roundness and integrity of the weld seam, avoiding blind spots and ensuring the welding quality of large-diameter marine oil and gas pipelines.

[0014] 2. This marine oil and gas large-diameter pipeline welding quality analysis device can adjust the position of the L-shaped rod by rotating the first threaded rod through the first adjustment mechanism, thereby adjusting the distance between the laser detection camera and the infrared distance sensor and the pipeline welding point; the second adjustment mechanism can adjust the spacing of the arc-shaped clamps by rotating the internal threaded tube, so that the device can adapt to pipelines of different diameters, improve the versatility of the device, and meet the welding quality inspection needs of various marine oil and gas large-diameter pipelines. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a welding quality analysis device for large-diameter marine oil and gas pipelines proposed in this invention. Figure 2 for Figure 1 Another structural diagram from another perspective; Figure 3 for Figure 1 Internal structure diagram; Figure 4 for Figure 2 Internal structure diagram; Figure 5 This is a perspective view of the first adjusting mechanism in this invention; Figure 6 This is a perspective view of the second adjustment mechanism in this invention.

[0016] In the diagram: 1. Arc-shaped support plate; 2. Arc-shaped clamping plate; 3. First connecting block; 4. Second connecting block; 5. Bolt; 6. Nut; 7. Arc-shaped slider; 8. Connecting plate; 9. Connecting rod; 10. Support rod; 11. Horizontal plate; 12. L-shaped rod; 13. Mounting plate; 14. Infrared distance sensor; 15. Laser detection camera; 16. Transmission rod; 17. Gear; 18. Tooth; 19. Motor; 20. Side plate; 21. Slide rod; 22. First threaded rod; 23. Internally threaded tube; 24. Second threaded rod; 25. Fixed tube; 26. Movable rod. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1-6 A welding quality analysis device for large-diameter marine oil and gas pipelines includes an arc-shaped support plate 1, a laser detection camera 15, and an infrared distance sensor 14. Two arc-shaped support plates 1 are symmetrically arranged abutting each other, and a connecting mechanism is provided between the two ends of the two arc-shaped support plates 1. The two arc-shaped support plates 1 are connected by the connecting mechanism. The laser detection camera 15 and the infrared distance sensor 14 are respectively located below the two arc-shaped support plates 1. A horizontal plate 11 is provided above both the laser detection camera 15 and the infrared distance sensor 14, and an L-shaped rod 12 is slidably arranged below the horizontal plate 11. A mounting plate 13 is fixedly installed at the lower end of 12. The laser detection camera 15 and the infrared distance sensor 14 are fixedly installed on the corresponding mounting plates 13. A first adjustment mechanism that drives the L-shaped rod 12 to move is provided on the lower side of the horizontal plate 11. A transmission mechanism that drives the horizontal plate 11 to move in a circle along the arc-shaped support plate 1 is provided on one side of the upper surface of the horizontal plate 11. A support mechanism that keeps the horizontal plate 11 moving stably is provided on the upper side of the arc-shaped support plate 1. Arc-shaped clamping plates 2 are provided on the inner side of both arc-shaped support plates 1. A second adjustment mechanism that adjusts the position of the arc-shaped clamping plates 2 is provided on the inner side of the arc-shaped support plates 1.

[0019] Please see Figure 1-6 The connecting mechanism includes a first connecting block 3 and a second connecting block 4. The two first connecting blocks 3 are fixedly installed on the outer walls of both ends of the arc-shaped support plate 1 on one side, and the two second connecting blocks 4 are fixedly installed on the outer walls of both ends of the arc-shaped support plate 1 on the other side. The side walls of the first connecting blocks 3 and the second connecting blocks 4 are provided with through holes, and bolts 5 are inserted between two adjacent through holes. One end of the bolt 5 is threaded with a nut 6.

[0020] Please see Figure 1-6 The first adjustment mechanism includes a first threaded rod 22 and two side plates 20. The two side plates 20 are fixedly disposed on the lower surface of the horizontal plate 11 and located on both sides of the L-shaped rod 12. The first threaded rod 22 is rotatably disposed between the two side plates 20. The upper end of the L-shaped rod 12 is threadedly connected to the rod wall of the first threaded rod 22, which can adjust the distance between the laser detection camera 15 and the infrared distance sensor 14 and the pipeline welding joint, and can detect pipeline welding joints of different diameters. A sliding rod 21 is arranged parallel to one side of the first threaded rod 22. Both ends of the sliding rod 21 are fixedly connected to the corresponding side plate 20. One end of the L-shaped rod 12 is movably connected to the sliding rod 21, so that the L-shaped rod 12 can slide stably along the first threaded rod 22.

[0021] Please see Figure 1-6 The transmission mechanism includes a gear 17 and teeth 18. A first arc-shaped cavity is formed on the lower surface of the arc-shaped support plate 1, and a first arc-shaped opening is formed on the lower side of the first arc-shaped cavity. A transmission rod 16 is rotatably mounted on the upper surface of the horizontal plate 11. The upper end of the transmission rod 16 extends through the first arc-shaped opening to the inner side of the first arc-shaped cavity. The gear 17 is fixedly sleeved on the top end of the transmission rod 16. Multiple teeth 18 are arranged in a ring array along one side of the inner wall of the first arc-shaped cavity. The gear 17 and teeth 18 are meshed and connected. A motor 19 is fixedly mounted on one side of the lower surface of the horizontal plate 11. The output end of the motor 19 is fixedly connected to one end of the transmission rod 16, which enables the horizontal plate 11 to drive the corresponding laser detection camera 15 and infrared distance sensor 14 to make circumferential movements along the periphery of the pipeline, that is, to automatically detect the roundness and integrity of the pipeline weld.

[0022] Please see Figure 1-6 The support mechanism includes an arc-shaped slider 7 and a support rod 10. The support rod 10 is fixedly installed on one side of the upper surface of the horizontal plate 11. A connecting plate 8 is fixedly installed at the upper end of the support rod 10. A second arc-shaped cavity is opened inside the upper side of the arc-shaped support plate 1. A second arc-shaped opening is opened on the upper surface of the second arc-shaped cavity. One end of the connecting plate 8 extends to the upper side of the second arc-shaped opening. A connecting rod 9 is fixedly installed on the lower side of the end of the connecting plate 8 away from the support rod 10. The lower end of the connecting rod 9 extends through the second arc-shaped opening into the interior of the second arc-shaped cavity. The arc-shaped slider 7 is slidably installed inside the second arc-shaped cavity. The lower end of the connecting rod 9 is fixedly connected to the upper side of the arc-shaped slider 7, which can keep the horizontal plate 11 stable in a circular motion along the arc-shaped support plate 1.

[0023] The second adjustment mechanism includes an internally threaded tube 23 and a second threaded rod 24. The internally threaded tube 23 is rotatably mounted on the side of the arc-shaped support plate 1 near the arc-shaped clamping plate 2. The second threaded rod 24 is threadedly sleeved inside the internally threaded tube 23. One end of the second threaded rod 24 is fixedly connected to the arc-shaped clamping plate 2, which facilitates adjustment of the distance between the two arc-shaped clamping plates 2, enabling clamping and limiting of pipelines of different diameters. A fixed tube 25 is provided on the lower side of the internally threaded tube 23. One end of the fixed tube 25 is fixedly connected to the side wall of the arc-shaped support plate 1. A movable rod 26 is movably sleeved inside the fixed tube 25. One end of the movable rod 26 is fixedly connected to the arc-shaped clamping plate 2, preventing the arc-shaped clamping plate 2 from rotating, thus enabling stable sliding. A knob is fixedly sleeved on the outer wall of one end of the internally threaded tube 23, facilitating rotation of the internally threaded tube 23.

[0024] In summary, when using this marine oil and gas large-diameter pipeline welding quality analysis device, firstly, according to the diameter of the marine oil and gas large-diameter pipeline to be inspected, the knob on the internal threaded pipe 23 is rotated, causing the internal threaded pipe 23 to rotate, which drives the second threaded rod 24 to move, thereby adjusting the spacing of the arc-shaped clamping plates 2. The device is then clamped onto the pipeline by the arc-shaped clamping plates 2, and the two arc-shaped support plates 1 are fixedly connected by bolts 5 and nuts 6. Next, according to the inspection requirements, the first threaded rod 22 is rotated. When the first threaded rod 22 rotates, the L-shaped rod 12, due to its movable engagement with the sliding rod 21, can only move along the axial direction of the first threaded rod 22, thereby adjusting the distance between the laser detection camera 15 and the infrared distance sensor 14 and the pipeline weld, and adjusting the position. Then, the motor 19 is started, which drives the transmission rod 16 to rotate. The transmission rod 16 drives the gear 17 to rotate, and the gear 17 meshes with the teeth 18, causing the horizontal plate 11 to move in a circle along the arc-shaped support plate 1. This, in turn, drives the laser detection camera 15 and the infrared distance sensor 14 to perform circular motion detection around the weld seam of the pipeline. During the movement of the horizontal plate 11, the arc-shaped slider 7 of the support mechanism slides in the second arc-shaped cavity. The connecting rod 9 and the connecting plate 8 ensure the stable movement of the horizontal plate 11. During the movement, the laser detection camera 15 and the infrared distance sensor 14 respectively detect the appearance and internal defects of the weld seam, and obtain data such as the roundness and integrity of the weld seam, thus completing the analysis of the welding quality of the large-diameter marine oil and gas pipeline.

[0025] It should be noted that the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding quality analysis device for large-diameter marine oil and gas pipelines, comprising an arc-shaped support plate (1), a laser detection camera (15), and an infrared distance sensor (14), characterized in that: Two arc-shaped support plates (1) are symmetrically arranged against each other. A connecting mechanism is provided between the two ends of the two arc-shaped support plates (1). The two arc-shaped support plates (1) are connected by the connecting mechanism. The laser detection camera (15) and the infrared distance sensor (14) are respectively arranged below the two arc-shaped support plates (1). A horizontal plate (11) is provided on the upper side of both the laser detection camera (15) and the infrared distance sensor (14). An L-shaped rod (12) is slidably arranged on the lower side of the horizontal plate (11). A mounting plate (13) is fixedly arranged at the lower end of the L-shaped rod (12). The laser detection camera... The head (15) and infrared distance sensor (14) are fixedly installed on the corresponding mounting plate (13). The lower side of the horizontal plate (11) is provided with a first adjustment mechanism that drives the L-shaped rod (12) to move. The upper surface of the horizontal plate (11) is provided with a transmission mechanism that drives the horizontal plate (11) to move in a circle along the arc-shaped support plate (1). The upper side of the arc-shaped support plate (1) is provided with a support mechanism that keeps the horizontal plate (11) moving stably. The inner sides of the two arc-shaped support plates (1) are provided with arc-shaped clamps (2). The inner side of the arc-shaped support plate (1) is provided with a second adjustment mechanism that adjusts the position of the arc-shaped clamps (2).

2. The welding quality analysis device for large-diameter marine oil and gas pipelines according to claim 1, characterized in that: The connecting mechanism includes a first connecting block (3) and a second connecting block (4). The two first connecting blocks (3) are fixedly disposed on the outer walls of both ends of the arc-shaped support plate (1) on one side, and the two second connecting blocks (4) are fixedly disposed on the outer walls of both ends of the arc-shaped support plate (1) on the other side. The side walls of the first connecting block (3) and the second connecting block (4) are provided with through holes, and bolts (5) are inserted between two adjacent through holes. One end of the bolt (5) is threaded with a nut (6).

3. The welding quality analysis device for large-diameter marine oil and gas pipelines according to claim 1, characterized in that: The first adjustment mechanism includes a first threaded rod (22) and side plates (20). The two side plates (20) are fixedly disposed on the lower surface of the horizontal plate (11) and located on both sides of the L-shaped rod (12). The first threaded rod (22) is rotatably disposed between the two side plates (20). The upper end of the L-shaped rod (12) is threadedly connected to the rod wall of the first threaded rod (22).

4. The welding quality analysis device for large-diameter marine oil and gas pipelines according to claim 1, characterized in that: The transmission mechanism includes a gear (17) and teeth (18). The lower surface of the arc-shaped support plate (1) is provided with a first arc-shaped cavity, and the lower side of the first arc-shaped cavity is provided with a first arc-shaped opening. The upper surface of the horizontal plate (11) is rotatably provided with a transmission rod (16). The upper end of the transmission rod (16) extends through the first arc-shaped opening to the inner side of the first arc-shaped cavity. The gear (17) is fixedly sleeved on the top end of the transmission rod (16). Multiple teeth (18) are arranged in a ring array along one side of the inner wall of the first arc-shaped cavity. The gear (17) and teeth (18) are meshed and connected. A motor (19) is fixedly provided on one side of the lower surface of the horizontal plate (11). The output end of the motor (19) is fixedly connected to one end of the transmission rod (16).

5. The welding quality analysis device for large-diameter marine oil and gas pipelines according to claim 1, characterized in that: The support mechanism includes an arc-shaped slider (7) and a support rod (10). The support rod (10) is fixedly disposed on one side of the upper surface of the horizontal plate (11). A connecting plate (8) is fixedly disposed at the upper end of the support rod (10). A second arc-shaped cavity is opened inside the upper side of the arc-shaped support plate (1). A second arc-shaped opening is opened on the upper surface of the second arc-shaped cavity. One end of the connecting plate (8) extends to the upper side of the second arc-shaped opening. A connecting rod (9) is fixedly disposed on the lower side of the end of the connecting plate (8) away from the support rod (10). The lower end of the connecting rod (9) extends through the second arc-shaped opening into the interior of the second arc-shaped cavity. The arc-shaped slider (7) is slidably disposed inside the second arc-shaped cavity. The lower end of the connecting rod (9) is fixedly connected to the upper side of the arc-shaped slider (7).

6. The welding quality analysis device for large-diameter marine oil and gas pipelines according to claim 1, characterized in that: The second adjustment mechanism includes an internally threaded tube (23) and a second threaded rod (24). The internally threaded tube (23) is rotatably disposed on the side of the arc-shaped support plate (1) near the arc-shaped clamping plate (2). The second threaded rod (24) is threadedly sleeved inside the internally threaded tube (23). One end of the second threaded rod (24) is fixedly connected to the arc-shaped clamping plate (2).

7. The welding quality analysis device for large-diameter marine oil and gas pipelines according to claim 3, characterized in that: A slide rod (21) is provided parallel to one side of the first threaded rod (22). Both ends of the slide rod (21) are fixedly connected to the corresponding side plate (20). One end of the L-shaped rod (12) is movably sleeved with the slide rod (21).

8. The welding quality analysis device for large-diameter marine oil and gas pipelines according to claim 6, characterized in that: A fixed tube (25) is provided on the lower side of the internally threaded tube (23). One end of the fixed tube (25) is fixedly connected to the side wall of the arc-shaped support plate (1). A movable rod (26) is movably sleeved inside the fixed tube (25). One end of the movable rod (26) is fixedly connected to the arc-shaped clamp (2).

9. The welding quality analysis device for large-diameter marine oil and gas pipelines according to claim 6, characterized in that: A knob is fixedly sleeved on the outer wall of one end of the internally threaded tube (23).

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